WO2022102730A1 - リン脂質を含む脂質粒子含有化粧料用組成物、化粧料用医薬部外品 - Google Patents
リン脂質を含む脂質粒子含有化粧料用組成物、化粧料用医薬部外品 Download PDFInfo
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- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
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- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- LYXOWKPVTCPORE-UHFFFAOYSA-N phenyl-(4-phenylphenyl)methanone Chemical compound C=1C=C(C=2C=CC=CC=2)C=CC=1C(=O)C1=CC=CC=C1 LYXOWKPVTCPORE-UHFFFAOYSA-N 0.000 description 1
- 239000008055 phosphate buffer solution Substances 0.000 description 1
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- 239000003504 photosensitizing agent Substances 0.000 description 1
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- NEOZOXKVMDBOSG-UHFFFAOYSA-N propan-2-yl 16-methylheptadecanoate Chemical compound CC(C)CCCCCCCCCCCCCCC(=O)OC(C)C NEOZOXKVMDBOSG-UHFFFAOYSA-N 0.000 description 1
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- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
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- 159000000000 sodium salts Chemical class 0.000 description 1
- KMPHTYSTEHXSTL-UHFFFAOYSA-M sodium;2-hydroxypropanoate;2-hydroxypropanoic acid Chemical compound [Na+].CC(O)C(O)=O.CC(O)C([O-])=O KMPHTYSTEHXSTL-UHFFFAOYSA-M 0.000 description 1
- XGRLSUFHELJJAB-JGSYTFBMSA-M sodium;[(2r)-2-hydroxy-3-[(z)-octadec-9-enoyl]oxypropyl] hydrogen phosphate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)COP(O)([O-])=O XGRLSUFHELJJAB-JGSYTFBMSA-M 0.000 description 1
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
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- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
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- 235000019337 sorbitan trioleate Nutrition 0.000 description 1
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- 238000010186 staining Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
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- 229940012831 stearyl alcohol Drugs 0.000 description 1
- 210000000434 stratum corneum Anatomy 0.000 description 1
- 229910052917 strontium silicate Inorganic materials 0.000 description 1
- QSQXISIULMTHLV-UHFFFAOYSA-N strontium;dioxido(oxo)silane Chemical compound [Sr+2].[O-][Si]([O-])=O QSQXISIULMTHLV-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- 229940117986 sulfobetaine Drugs 0.000 description 1
- 235000020238 sunflower seed Nutrition 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- DZKXJUASMGQEMA-UHFFFAOYSA-N tetradecyl tetradecanoate Chemical compound CCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCC DZKXJUASMGQEMA-UHFFFAOYSA-N 0.000 description 1
- KWXLCDNSEHTOCB-UHFFFAOYSA-J tetrasodium;1,1-diphosphonatoethanol Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P(=O)([O-])C(O)(C)P([O-])([O-])=O KWXLCDNSEHTOCB-UHFFFAOYSA-J 0.000 description 1
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
- OULAJFUGPPVRBK-UHFFFAOYSA-N tetratriacontyl alcohol Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCO OULAJFUGPPVRBK-UHFFFAOYSA-N 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 125000002640 tocopherol group Chemical class 0.000 description 1
- 235000019149 tocopherols Nutrition 0.000 description 1
- GYDJEQRTZSCIOI-LJGSYFOKSA-N tranexamic acid Chemical compound NC[C@H]1CC[C@H](C(O)=O)CC1 GYDJEQRTZSCIOI-LJGSYFOKSA-N 0.000 description 1
- 229960000401 tranexamic acid Drugs 0.000 description 1
- CRDAMVZIKSXKFV-UHFFFAOYSA-N trans-Farnesol Natural products CC(C)=CCCC(C)=CCCC(C)=CCO CRDAMVZIKSXKFV-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229960003500 triclosan Drugs 0.000 description 1
- SVETUDAIEHYIKZ-IUPFWZBJSA-N tris[(z)-octadec-9-enyl] phosphate Chemical compound CCCCCCCC\C=C/CCCCCCCCOP(=O)(OCCCCCCCC\C=C/CCCCCCCC)OCCCCCCCC\C=C/CCCCCCCC SVETUDAIEHYIKZ-IUPFWZBJSA-N 0.000 description 1
- 229960005066 trisodium edetate Drugs 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- UJMBCXLDXJUMFB-UHFFFAOYSA-K trisodium;5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)diazenyl]-4h-pyrazole-3-carboxylate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 UJMBCXLDXJUMFB-UHFFFAOYSA-K 0.000 description 1
- XWNXEWLCHSLQOI-UHFFFAOYSA-K trisodium;triacetate Chemical compound [Na+].[Na+].[Na+].CC([O-])=O.CC([O-])=O.CC([O-])=O XWNXEWLCHSLQOI-UHFFFAOYSA-K 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
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- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
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- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
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- 238000009834 vaporization Methods 0.000 description 1
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- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 235000019155 vitamin A Nutrition 0.000 description 1
- 239000011719 vitamin A Substances 0.000 description 1
- 229940045997 vitamin a Drugs 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000003871 white petrolatum Substances 0.000 description 1
- 238000004736 wide-angle X-ray diffraction Methods 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 239000000811 xylitol Substances 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
- 239000001052 yellow pigment Substances 0.000 description 1
- 238000000733 zeta-potential measurement Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229940105125 zinc myristate Drugs 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 description 1
- GBFLQPIIIRJQLU-UHFFFAOYSA-L zinc;tetradecanoate Chemical compound [Zn+2].CCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCC([O-])=O GBFLQPIIIRJQLU-UHFFFAOYSA-L 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
- OENHQHLEOONYIE-JLTXGRSLSA-N β-Carotene Chemical compound CC=1CCCC(C)(C)C=1\C=C\C(\C)=C\C=C\C(\C)=C\C=C\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C OENHQHLEOONYIE-JLTXGRSLSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/14—Liposomes; Vesicles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/55—Phosphorus compounds
- A61K8/553—Phospholipids, e.g. lecithin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/10—General cosmetic use
Definitions
- the present invention relates to a composition for cosmetics containing lipid particles containing phospholipids, and a quasi-drug for cosmetics. More specifically, the present invention relates to a composition for cosmetics containing lipid particles containing phospholipids used in skin cosmetics, external preparations for skin, and quasi-drugs for cosmetics.
- phospholipids have been used as raw materials for lipid particles in various cosmetics, quasi-drugs, and pharmaceutical applications.
- phospholipids are used as the main raw material for liposomes, which have a bilayer membrane structure composed of lipids.
- Patent Document 1 describes phospholipids (A component), sterols (B component), HLB 12.0 to 16.0 polyoxyethylene sterol ethers (C component), polyhydric alcohols (D component), and water (E component).
- a component phospholipids
- B component HLB 12.0 to 16.0 polyoxyethylene sterol ethers
- D component polyhydric alcohols
- E component water
- Patent Document 2 provides a stable unilamellar liposome suspension comprising: A liposome formulation comprising a plurality of unilamellar liposome particles having a The water-soluble composition is present in an amount between about 67% and about 95% based on the weight of the liposome solution, and the oil-soluble composition is present in an amount between about 5% and about 33%.
- the external phase composition has a density between about 0.95 g / cc and about 1.25 g / cc and is about 2.5 cP to about 40,000 cP at a shear rate of 10 seconds -1 at 21 ° C.
- the liposome suspension has a refractive index of about 1.30 to about 1.45 and is at a temperature of about 4 ° C to about 50 ° C for at least 30 days, or at a temperature of 21 ° C. It is disclosed that it is stable in neat form for a period of at least 180 days.
- Patent Document 3 describes components (A) to (C): (A) diisostearyl malate having a viscosity at 25 ° C. of 100 to 300 mPa ⁇ s; (B) phospholipid; and (C) polyhydric alcohol.
- a cosmetic comprising a phospholipid vesicle composition comprising; is disclosed.
- an object of the present invention is to provide a cosmetic composition or the like containing lipid particles, which has good storage stability and can be preferably used as a cosmetic composition or the like.
- the cosmetic composition or the pharmaceutical non-medicinal product for cosmetics of the present disclosure contains lipid particles containing at least phospholipids, polyhydric alcohol and water, and is based on 100% by mass of the polyhydric alcohol among the polyhydric alcohols. It is a cosmetic composition or a cosmetic non-medicinal product, characterized in that the content of trihydric or higher alcohol is 0 to 20% by mass.
- the cosmetic composition or quasi-drug for cosmetics disclosed in the present disclosure is excellent in usability and long-term storage stability because the amount of alcohol having a trivalent or higher content is small. More preferably, it is also excellent in skin permeability, retention in the skin and skin barrier property. Therefore, the cosmetic composition or quasi-drug for cosmetics of the present disclosure can be preferably used, for example, as an additive for cosmetics and quasi-drugs, and as an external preparation for skin.
- composition for cosmetics of the present disclosure requires lipid particles containing at least phospholipids, polyhydric alcohol and water. Included as an ingredient.
- the quasi-drugs in this disclosure are quasi-drugs stipulated in the Pharmaceutical Affairs Law, and are designated by the Minister of Health, Labor and Welfare stipulated in Article 2, Paragraph 2 of the Pharmaceutical Affairs Law. Specifically, it means an article used for the purpose of diagnosing, treating, improving, alleviating, treating or preventing a human or animal disease, which has a lighter action than a drug, for example.
- quasi-drugs exclude articles used for pharmaceutical purposes, products used for the treatment and prevention of human and animal diseases, and have a slight effect on the human body. Includes products that do not act directly.
- the ingredients that make up quasi-drugs are listed in the Japanese Pharmacopoeia, Food Additives Official Regulations, Japanese Industrial Standards and Quasi-drug Raw Material Standards.
- the lipid particle containing at least a phospholipid means a particle composed of a lipid containing a phospholipid.
- the phospholipid is, for example, a compound having a structure in which a fatty acid and phosphoric acid are bound to each other with glycerin or sphingosine as a central skeleton, and further, for example, an alcohol is ester-bonded to the phosphoric acid, and is a natural phospholipid or synthetic phosphorus.
- examples thereof include hydrogenated phospholipids in which unsaturated carbon chains of lipids and naturally occurring phospholipids are saturated with hydrogen.
- fatty acid for example, a saturated fatty acid or an unsaturated fatty acid having 5 to 30 carbon atoms is preferable, and a linear saturated fatty acid or a linear unsaturated carbon chain having 10 to 25 carbon atoms is preferable.
- phospholipids include natural phospholipids such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, phosphatidylglycerol, egg yolk lecithin, and soybean lecithin; Synthetic phospholipids such as phosphatidylcholine, dioreoil phosphatidylcholine, palmitoyl oleoylphosphatidylcholine; hydrogenated phospholipids such as hydrogenated soybean lecithin, hydrogenated egg yolk lecithin, hydrogenated phosphatidylcholine, and hydrogenated phosphatidylserine can be exemplified.
- natural phospholipids such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, phosphatidylglycerol, egg yolk lecithin, and soybean lec
- the phospholipids of the present disclosure are preferably glycerophospholipids in which two fatty acids are bound to glycerin and one phosphoric acid which may be esterified, and more preferably, fatty acids are bound to two of the three hydroxyl groups of glycerophospholipid. It is phosphatidylcholine in which phosphoric acid is bound to one and choline is bound to phosphoric acid as an alcohol.
- the phospholipid of the present disclosure is more preferably hydrogenated phosphatidylcholine in which the unsaturated carbon chain of the fatty acid is saturated with hydrogen.
- the raw materials of the phospholipid are not particularly limited, but are preferably egg yolk phospholipid and soybean phospholipid, more preferably soybean phospholipid, and further preferably hydrogenated soybean phospholipid. These phospholipids can be used alone or in admixture of two or more.
- the phospholipid of the present disclosure means a phospholipid having two acyl groups. In the present specification, phospholipids do not include lysophospholipids, and both are used separately.
- the lipid may contain only the above-mentioned phospholipid, but may contain a lipid other than the above-mentioned phospholipid.
- Lipids other than phospholipids include, for example, simple lipids. Simple lipids are composed of only three elements, C, H, and O, and are ester-type lipids in which fatty acids and alcohols are bound. Alcohols to be bound include long-chain alcohols, polyhydric alcohols such as glycerol, and sterols such as cholesterol and phytosterols.
- Lipids other than phospholipids include, for example, complex lipids.
- the complex lipid contains N as a base and P as a phosphoric acid.
- complex lipids other than phospholipids include sphingolipids and glycolipids.
- Lipids other than phospholipids include, for example, unsaponified lipids such as alkanes, pigments, and fat-soluble vitamins.
- unsaponified lipids such as alkanes, pigments, and fat-soluble vitamins.
- One type or two or more types of lipids other than phospholipids can be used.
- the lipid particles of the present disclosure may contain sterols and lysophospholipids as lipids other than phospholipids.
- sterols From the viewpoint of stabilizing lipid particles, it is preferable to use sterols, and from the viewpoint of reducing the particle size of lipid particles, it is preferable to use lysophospholipids.
- the sterols of the present disclosure include cholesterol, which is a compound widely distributed in the living body of mammals and fish including humans, and phytosterols contained in plants, and it is preferable to use cholesterol.
- the cholesterol of the present disclosure can be industrially obtained by extracting and purifying mainly from wool fat.
- it can be obtained from the cerebrospinal cord of cattle and pigs, fish oil, cod liver oil of squid, etc., it is preferable to use cholesterol obtained from wool fat.
- the cholesterol of the present disclosure may be ester-denatured.
- the lysophospholipid of the present disclosure means a phospholipid having one acyl group. In the present specification, phospholipids do not include lysophospholipids, and both are used separately.
- the lysophospholipid of the present disclosure may be, for example, one obtained by hydrolysis of one fatty acid molecule bound to the 1st or 2nd position of the glycerol of the glycerophospholipid.
- the lysophospholipids of the present disclosure have different chemical properties than phospholipids having double-stranded fatty acids.
- the lysophatidic lipid include one or a mixture of two or more such as lysophosphatidylcholine, lysophosphatidylethanolamine, lysophosphatidylserine, lysophosphatidylinositol, lysophosphatidic acid, and lysophosphatidylglycerol.
- lysophosphatids lysophosphatidylcholine is preferable from the viewpoint of transparently dispersing the oil in water. More preferably, hydrogenated lysophosphatidylcholine in which the unsaturated carbon chain of the fatty acid is saturated with hydrogen is preferable.
- the raw material of the lysophospholipid is not particularly limited, and examples thereof include soybean lysophospholipid, hydrogenated soybean lysophospholipid, egg yolk lysophospholipid, hydrogenated egg yolk lysophosphory lipid, and the like, preferably soybean lysophospholipid, and more preferably hydrogenated soybean lysophospholipid. Is. These lysophospholipids can be used alone or in combination of two or more as required.
- the lysophospholipid of the present disclosure may have the structure described in the following general formula (1).
- R represents a saturated or unsaturated aliphatic acyl group having 10 to 30 carbon atoms
- X represents a hydrogen atom or a polar group.
- R in the general formula (1) represents a saturated or unsaturated aliphatic acyl group having 10 to 30 carbon atoms.
- the saturated aliphatic acyl group having 10 to 30 carbon atoms is not particularly limited, and for example, a lauroyl group, a myritoyl group, a palmitoyl group, a stearoyl group, an eicosanoyl group, a heneicosanoyl group, a docosanoyl group, a tricosanoyl group, and a tetracosanoyl group.
- Pentacosanoyl group Pentacosanoyl group, hexacosanoyl group, heptacosanoyl group, octacosanoyl group, nonacosanoyl group, triaconanoyl group and the like.
- unsaturated aliphatic acyl group having 10 to 30 carbon atoms include monounsaturated or polyunsaturated groups, for example, docosamonoenoyl group, docosadienoyl group, docosatrienoyl group, docosatetraenoyl group, and the like.
- Examples thereof include a docosapentaenoyl group, a docosahexaenoyl group, a tricosamonoenoyl group, a tricosadienoyl group, an oleoil group, a linoleoyl group, a linolenoyl group, an arachidnoyl group and the like.
- acyl group a saturated or unsaturated aliphatic acyl group having 14 to 20 carbon atoms is preferable, and a palmitoyl group, a stearoyl group, a linoleoyl group, an oleoil group, a linolenoyl group and the like are more preferable.
- X in the general formula (1) represents a hydrogen atom or a polar group.
- the polar group examples include a hydroxyl group-containing compound such as choline, ethanolamine, inositol, serine, glycerol, and ethanol (preferably containing a hydroxyl group, and if necessary, an amino group, an alkylamino group, and a carboxylic acid group. Included are residues excluding the OH group attached to the carbon skeleton of an aliphatic hydrocarbon having at least one of 2 to 10 carbon atoms selected from the above.
- the X hydrogen atoms, ethanolamine, choline, and glycerol residues are preferable, and glycerol residues are more preferable.
- the content of the phospholipid in the lipid particles is preferably 60% by mass or more, more preferably 70% by mass or more, and 90% by mass or more, based on 100% by mass of the total of phospholipids and lipids other than phospholipids. Is more preferable.
- the content of phosphatidylcholine is preferably 60% by mass or more, more preferably 65% by mass or more, and 70% by mass with respect to 100% by mass of the total of phosphatidylcholine and phospholipids other than phosphatidylcholine. % Or more is particularly preferable. Within the above range, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- Lipid particles containing phospholipids are amphoteric due to the presence of a fatty acid site, which is a hydrophobic site, and a phosphoric acid site, which is a hydrophilic site, in the structure, and have a spherical structure with the hydrophilic site facing outward in the aqueous solution. .. Since it has such a spherical structure, it is a particle, and the particle diameter and the like can be measured as the particle.
- the content of phospholipid in 100 parts by mass of the lipid particles of the present disclosure is preferably 5 parts by mass or more, more preferably 30 parts by mass or more, from the viewpoint of stability, percutaneous permeability and skin barrier property of cosmetic compositions and the like. It is preferable that 45 parts by mass or more is further preferable, 95 parts by mass or less is preferable, 90 parts by mass or less is more preferable, and 80 parts by mass or less is further preferable.
- the content of cholesterol in 100 parts by mass of the lipid particles of the present disclosure is preferably 1 part by mass or more, more preferably 5 parts by mass or more, still more preferably 8 parts by mass or more, from the viewpoint of stability of the cosmetic composition or the like.
- the content of the lysophospholipid in 100 parts by mass of the lipid particles of the present disclosure is preferably 0.01 part by mass or more, more preferably 0.1 part by mass or more, and 1 part by mass from the viewpoint of stability of the cosmetic composition or the like. The above is more preferable, 30 parts by mass or less is preferable, 28 parts by mass or less is more preferable, and 25 parts by mass or less is further preferable.
- the lipid particles of the present disclosure may contain ceramide.
- Ceramide is a kind of sphingolipid and can form lipid particles.
- the ceramide of the present disclosure is not limited as long as it can be used for cosmetics and the like, but can be defined as the following. That is, one or more long chain (for example, 10 or more carbon atoms) linear and / or branched alkyl or alkenyl group in the molecule, and at least two or more hydroxyl groups and one or more amide groups (and / or).
- ceramides represented as a nonionic amphipathic substance having an amino group), or a derivative in which a phosphatidylcholine residue or a sugar residue is bound to a hydroxyl group of the nonionic amphipathic substance.
- ceramide EOS ceramide NS
- ceramide NP ceramide NP
- ceramide NG ceramide EOH
- ceramide AS ceramide AG
- ceramide AP ceramide AH
- ceramide NH ceramide EOP
- ceramide NDS which are sphingosine, phytosphingocin and their long-chain fatty acid amides.
- Ceramide ADS Ceramide EODS
- Ceramide 3B Ceramide 3B and other natural ceramides; Examples thereof include glycolipids and phytosphingo glycolipids, and one type or a combination of two or more types can be used.
- ceramides include synthetic ceramides, pseudoceramides and the like, but from the superiority of the technique of the present invention, natural ceramides are preferable, and particularly excellent rough skin improving effect and moisturizing effect are obtained.
- ceramide NS, ceramide NG, ceramide NP, ceramide 3B and ceramide AP are preferable.
- the content of ceramide in 100 parts by mass of the lipid particles of the present disclosure is preferably 0.1 part by mass or more, more preferably 0.5 part by mass or more, still more preferably 1 part by mass or more, and cosmetics. From the viewpoint of stability of the composition or the like, 50 parts by mass or less is preferable, 40 parts by mass or less is more preferable, and 30 parts by mass or less is further preferable.
- the mass ratio of phospholipids to lysophospholipids (mass of phospholipids / mass of lysophospholipids) in the lipid particles of the present disclosure is 0.1/1 from the viewpoint of the stability of the lipid particles. It is preferably ⁇ 40/1, more preferably 1/1 to 35/1, and even more preferably 3/1 to 30/1.
- the content of phospholipid in the lipid particles of the present disclosure with respect to a total of 100 parts by mass of phospholipid and lysophospholipid is preferably 30 parts by mass or more, more preferably 45 parts by mass or more, and 50 parts by mass from the viewpoint of stability of the lipid particles.
- the above is more preferable, 99 parts by mass or less is preferable, 98 parts by mass or less is more preferable, and 97 parts by mass or less is further preferable.
- the content of the lysophospholipid in the lipid particles of the present disclosure with respect to a total of 100 parts by mass of the phospholipid and the lysophospholipid is preferably 1 part by mass or more, more preferably 2 parts by mass or more, and 3 parts by mass from the viewpoint of the stability of the lipid particles.
- the above is more preferable, 70 parts by mass or less is preferable, 55 parts by mass or less is more preferable, and 40 parts by mass or less is further preferable.
- Lipid particles are, for example, amorphous solid lipid particles, liposomes, bicelles, micelles, liposomes are spheres with at least one lipid bilayer structure (lipid bilayer), and bicelle is at least one lipid bilayer. It is elliptical and flat, and micelles are formed by a lipid monolayer (a single layer of lipid).
- the lipid particles in the present disclosure are preferably amorphous solid lipid particles, liposomes and bicelle, and particularly preferably amorphous solid lipid particles and liposomes.
- the lipid particles of the present disclosure may have a multilamellar structure (multilayer membrane structure) or a unilamellar structure (single membrane structure). From the viewpoint of improving the sustainability of the effect of the medicinal ingredient described later, a multilamellar structure is preferable. From the viewpoint of improving the transparency of the appearance of the cosmetic composition and the like of the present disclosure, a unilamellar structure is preferable.
- the membrane structure of the lipid particles of the present disclosure is in any of gel, liquid crystal and amorphous states.
- a cosmetic composition or the like containing a single lipid particle in any of the states tends to have higher storage stability than a cosmetic composition or the like containing the lipid particle in any of the states as a mixture. It is in.
- the membrane structure can be measured by the method described in Examples.
- the fluorescence anisotropy of the lipid particles of the present disclosure can be measured by adding a fluorescent substance to the lipid particles, and it can be seen that the lower the value, the higher the membrane fluidity of the lipid particles. Since the membrane fluidity of the lipid particles of the present disclosure is high, transdermal permeability is promoted, and the function of replenishing the defective portion of the intercellular lipid tends to be improved. Fluorescence anisotropy can be a physical characteristic that allows observation of the distribution behavior of the particles of the present invention in the skin.
- the lipid particles can include medicinal ingredients and the like.
- a hydrophilic component or a hydrophobic component can be mounted on the lipid particles. Normally, when it contains a hydrophilic component, it is contained between the core part of the lipid particle and the hydrophilic part of the lipid bilayer membrane, and when it contains a hydrophobic component, it is incorporated into the lipid bilayer and the membrane. It becomes an ingredient.
- the medicinal properties include allantin, carnosin, ascorbic acid, magnesium ascorbic acid phosphate, ascorbic tetrahexyldecanoate, L-ascorbic acid 2-glycoside, carotene, retinol, retinol acetate, retinol palmitate, tocopherol acetate, tocopherol, glutathione.
- the water-soluble component among the medicinal components can be taken in between the hydrophilic core portion of the lipid particles and the hydrophilic site of the lipid bilayer, and is oil-soluble.
- Ingredients can be incorporated into a lipid bilayer membrane that is hydrophobic internally.
- the medicinal component contained in the lipid particle is retained by the lipid particle, and when it acts on the skin, for example, the medicinal component can be gradually released inside the skin.
- the content of the medicinal component in 100 parts by mass of the lipid particles of the present disclosure is preferably 0 parts by mass or more, more preferably 0.01 parts by mass or more, and 0.1 parts by mass from the viewpoint of stability of the cosmetic composition or the like.
- the above is more preferable, 30 parts by mass or less is preferable, 20 parts by mass or less is more preferable, and 15 parts by mass or less is further preferable.
- the lipid particles of the present disclosure are blended in a cosmetic composition or the like containing polyhydric alcohol and water, and may be in a dispersed state as a solution (colloidal solution or the like), or the cosmetic composition. If not, the lipid particles may be used as a powder. When used as a powder, a solution containing lipid particles (colloidal solution or the like) obtained by an appropriate method may be dried to obtain a powder. The lipid particles of the present disclosure may be used as powder and added directly to cosmetics and the like. When the cosmetics and the like contain polyhydric alcohol and water, the cosmetics and the like containing the resin particles added as powder correspond to the cosmetic composition and the like of the present disclosure.
- the content (or the content of the lipid component) of the lipid particles with respect to 100 parts by mass of the cosmetic composition of the present disclosure is preferably 0.01 part by mass or more, more preferably 0.05 part by mass or more, and 0.1 mass by mass. More than parts are more preferable, 20 parts by mass or less is preferable, 15 parts by mass or less is more preferable, 10 parts by mass or less is further preferable, 8 parts by mass or less is further preferable, and 5 parts by mass or less may be used.
- the lipid particles (or lipid components) may be adjusted to an appropriate content through a concentration step. ..
- the lipid particles (or the lipid component) may be adjusted to an appropriate content through a dilution step.
- the appropriate content refers to the content range of the lipid particles (or lipid components).
- the polyhydric alcohol is an alcohol having two or more hydroxyl groups in the molecule. It is classified into divalent alcohols and alcohols of trihydric or higher according to the number of hydroxyl groups.
- the polyhydric alcohol may be a polyhydric alcohol polymer or a compound having two or more hydroxyl groups in the molecule.
- the polyhydric alcohol is preferably an alcohol composed of only three elements of C, H, and O having two or more hydroxyl groups in the molecule, and a hydrocarbon group having two or more hydroxyl groups in the molecule.
- an alcohol composed of a hydroxyl group, or an alcohol composed of a hydrocarbon group, a hydroxyl group and an ether bond is more preferable.
- the polyhydric alcohol preferably has no ketone group in the molecule.
- the dihydric alcohol is an alcohol having two hydroxyl groups in one molecule, for example, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-butylene glycol, 1,2-butanediol, 1,4-butylene.
- Glycol, isopentyldiol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, 1,2-decanediol, dipropylene glycol and the like have 2 to 20 carbon atoms, preferably 2 carbon atoms. ⁇ 10 Alcandiols.
- the dihydric alcohols include 1,3-butylene glycol, 1,2-pentanediol, isopentyldiol, 1,2-hexanediol, 1,2-octanediol, 1, 2-Decandiol is preferred, and 1,3-butylene glycol and 1,2-octanediol are more preferred.
- the dihydric alcohol may be selected from the following polyhydric alcohol polymers or other compounds having two or more hydroxyl groups in the molecule.
- Alcohols having a trivalent or higher valence are alcohols having three or more hydroxyl groups in one molecule, and trihydric alcohols have 3 to 20 carbon atoms such as glycerin, trimethylolpropane, and 1,2,6-hexanetriol, preferably. It is an alkanetriol having 3 to 10 carbon atoms, the tetrahydric alcohol is an alkanetetraol having 4 to 20 carbon atoms such as pentaerythritol, and the pentahydric alcohol is an alkanepentaol having 5 to 20 carbon atoms such as xylitol.
- the hexahydric alcohol is, for example, an alkanehexaol having 6 to 20 carbon atoms such as sorbitol and mannitol.
- the trihydric or higher alcohol may be selected from the following polyhydric alcohol polymers or other compounds having two or more hydroxyl groups in the molecule.
- the polyhydric alcohol polymer is, for example, diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin and the like.
- Examples of the compound having two or more hydroxyl groups in the above-mentioned molecule include glycerin monoalkyl ether, and the glycerin monoalkyl ether is, for example, xyl alcohol, ceracyl alcohol, bacillic alcohol and the like.
- sugar alcohols are also mentioned as compounds having two or more hydroxyl groups in other molecules, and sugar alcohols include, for example, sorbitol, maltotriose, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, and starch-degrading sugar. , Maltos, xylitos, starch-degrading sugar-reduced alcohols and the like. These polyhydric alcohols can be used alone or in admixture of two or more.
- the cosmetic composition and the like of the present disclosure preferably contain 1% by mass or more of polyhydric alcohol, more preferably 3% by mass or more, based on 100% by mass of the total of the cosmetic composition and the like. It is more preferable to contain more than mass%.
- the cosmetic composition and the like of the present disclosure preferably contain 20% by mass or less of the polyhydric alcohol, more preferably 18% by mass or less, based on 100% by mass of the total of the cosmetic composition and the like. It is more preferable to contain 15% by mass or less. Within the above range, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- the amount of trihydric or higher alcohol is 0 to 20% by mass with respect to 100% by mass of the polyhydric alcohol. It is more preferably 0 to 15% by mass, and particularly preferably 0 to 10% by mass. Within the above range, cosmetic compositions and the like tend to have good storage stability, less stickiness, and an excellent usability. It is also a preferable embodiment to add a trihydric or higher alcohol to the cosmetic composition or the like, and the trihydric or higher alcohol is added in an amount of 1% by mass or more, preferably 5% by mass, based on 100% by mass of the polyhydric alcohol. As mentioned above, more preferably 10% by mass or more may be contained.
- the dihydric alcohol is preferably 80% by mass or more, more preferably 85% by mass or more, still more preferably 90% by mass or more, and particularly preferably 90% by mass or more, based on 100% by mass of the polyhydric alcohol. It is 95% by mass or more, and may be 100% by mass.
- the content of polyvalent alcohol (total content of divalent alcohol and trivalent or higher alcohol) contained in 100 parts by mass of the cosmetic composition of the present disclosure is preferably 0.10 parts by mass or more. , 0.15 parts by mass or more, more preferably 1 part by mass or more, further preferably 2 parts by mass or more, particularly preferably 3 parts by mass or more, and 35 parts by mass. It is preferably parts or less, more preferably 25 parts by mass or less, and even more preferably 20 parts by mass or less. Within the above range, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- the content of trivalent or higher alcohol in 100 parts by mass of the total content of divalent alcohol and trivalent or higher alcohol is preferably 0 to 50 parts by mass, more preferably. It is 0 to 40 parts by mass, more preferably 0 to 30 parts by mass, still more preferably 0 to 25 parts by mass, and particularly preferably 0 to 20 parts by mass. Within the above range, cosmetic compositions and the like tend to be less sticky and have an excellent usability.
- the content of divalent alcohol in 100 parts by mass of the total content of divalent alcohol and trivalent or higher alcohol is preferably 50 parts by mass or more, more preferably 60 parts by mass or more. It is more preferably 70 parts by mass or more, further preferably 75 parts by mass or more, and particularly preferably 80 parts by mass or more.
- examples of water include ordinary tap water, ion-exchanged water, pure water, soft water, hard water, natural water, deep-sea water, alkaline ionized water, and purified water obtained by various other methods.
- the water includes water containing salts and metals, an aqueous buffer solution and the like, and examples of the aqueous buffer solution include a phosphate buffer solution and a Tris buffer solution.
- the cosmetic composition and the like of the present disclosure preferably contain 50% by mass or more, more preferably 60% by mass or more, and 70% by mass or more of water with respect to 100% by mass of the total of the cosmetic composition and the like. It is more preferable to include it.
- the cosmetic composition and the like of the present disclosure preferably contain 95% by mass or less of water, more preferably 90% by mass or less, based on 100% by mass of the total of the cosmetic composition and the like, 85. It is more preferable to contain it in an amount of% by mass or less. Within the above range, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- the cosmetic composition and the like of the present disclosure may contain a storage stability improver.
- a storage stability improving agent When a storage stability improving agent is used, the storage stability of cosmetic compositions and the like is further improved.
- the storage stability improver include hydroxides of alkaline earth metals such as calcium hydroxide and magnesium hydroxide; alkaline earth metals such as calcium carbonate and ammonium carbonate, carbonates of ammonia, and amines (dimethylamine).
- Alkaline amines such as diethylamine, trimethylamine, triethylamine; cyclic amines such as morpholine; alcohol amines such as triethanolamine and diethanolamine), basic amino acids (eg, hydroxylysine, lysine, arginine, histidine, tryptophan, ornithine, etc.), etc.
- Alkaline earth metal hydroxides, alcohol amines, basic amino acids and the like are preferable.
- the amount of the storage stability improver contained in the cosmetic composition and the like of the present disclosure is preferably 0.1 ppm (mass basis; hereinafter, the same applies) or more, more preferably 1 ppm or more, still more preferably 10 ppm or more, and 1 mass.
- the storage stability improver penetrates between the lipid particles, and the negative charge of the storage stability improver and the negative charge on the surface of the lipid particles are electrostatically repelled, thereby improving the storage stability of the lipid particles. Be done.
- the cosmetic composition and the like of the present disclosure may contain substances other than the above-mentioned lipid particles containing at least phospholipids, polyhydric alcohols, water, and storage stability improvers.
- lipid particles containing at least phospholipids, polyhydric alcohols, water, and storage stability improvers.
- the cosmetic composition and the like of the present disclosure may contain a monohydric alcohol, a divalent alcohol dialkyl ether, a divalent alcohol ether ester and the like.
- the monohydric alcohols disclosed in the present disclosure include linear alcohols such as ethanol, propanol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, and cetostearyl alcohol, isopropanol, isobutyl alcohol, and t-butyl alcohol.
- 2-butyl-1-octanol 2-hexyl-1-decanol, 2-octyl-1-dodecanol, isostearyl alcohol, 2-decyl-1-tetradecanol, branched alcohols such as lanolin alcohol, ethylene glycol monomethyl Ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, etc.
- branched alcohols such as lanolin alcohol, ethylene glycol monomethyl Ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono2-methyl
- Examples thereof include alcohols having an ether bond such as ethylene glycol monoalkyl ether.
- the monohydric alcohol may be a lower alcohol having about 1 to 10 carbon atoms, preferably about 2 to 6 carbon atoms, or even a higher alcohol having about 11 to 30 carbon atoms, preferably about 11 to 20 carbon atoms. good. Further, a lower alcohol and a higher alcohol may be combined.
- lower alcohols such as ethanol, propanol, isopropanol and t-butyl alcohol are preferable, and ethanol is more preferable, from the viewpoint of solubility of lipid particles.
- monohydric branched alcohol is preferable, 2-octyl-1-dodecanol, isostearyl alcohol and 2-decyl-1-tetradecanol are more preferable, and 2-octyl-1 is more preferable.
- 2-octyl-1 is more preferable.
- -Dodecanol and 2-decyl-1-tetradecanol are more preferred.
- Examples of the divalent alcohol dialkyl ether of the present disclosure include C 2-6 alkanediol di C 1-10 alkyl ethers such as ethylene glycol dimethyl ether, ethylene glycol diethyl ether and ethylene glycol dibutyl ether, and ethylene glycol di C 1 -6 Alkyl ether is preferred.
- Examples of the divalent alcohol ether ester of the present disclosure include ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diazibate, and ethylene glycol dissuccinate.
- the content of monovalent alcohol, the content of divalent alcohol dialkyl ether, and the content of divalent alcohol ether ester contained in 100 parts by mass of the cosmetic composition of the present disclosure are each of the lipid particles. From the viewpoint of stability, 0.01 parts by mass or more is preferable, 0.05 parts by mass or more is more preferable, 0.1 parts by mass or more is further preferable, 20 parts by mass or less is preferable, and 15 parts by mass or less is more preferable. It is more preferably parts by mass or less.
- the thickener examples include dextrin, sodium pectinate, sodium aragnate, PVM (methyl vinyl ether), locust bean gum, tamarint gum, dialkyldimethylammonium sulfate cellulose, aluminum magnesium silicate, bentonite, hectrite, and AlMg silicate ( Bee gum), laponite, silicic anhydride and the like.
- the content of the thickener contained in 100 parts by mass of the cosmetic composition of the present disclosure is preferably 0.001 part by mass or more, more preferably 0.005 part by mass or more, and further preferably 0.05 part by mass or more. It is preferably 3 parts by mass or less, more preferably 1 part by mass or less, and further preferably 0.5 part by mass or less.
- the powder component examples include inorganic powders (eg, talc, kaolin, mica, silk mica (serisite), white mica, gold mica, synthetic mica, red mica, black mica, permiculite, magnesium carbonate, calcium carbonate, silicic acid.
- inorganic powders eg, talc, kaolin, mica, silk mica (serisite), white mica, gold mica, synthetic mica, red mica, black mica, permiculite, magnesium carbonate, calcium carbonate, silicic acid.
- Examples of the pH adjuster include a mixture of a hydroxycarboxylic acid such as lactic acid-sodium lactate and sodium citrate-an alkali metal salt thereof; and a dicarboxylic acid such as succinic acid-sodium succinate and an alkali metal salt thereof.
- a hydroxycarboxylic acid such as lactic acid-sodium lactate and sodium citrate-an alkali metal salt thereof
- a dicarboxylic acid such as succinic acid-sodium succinate and an alkali metal salt thereof.
- alkali metal hydroxides such as sodium hydroxide, potassium hydroxide, ammonia (which may be aqueous ammonia), citric acid, tartrate acid, lactic acid, phosphoric acid, neutral amino acids (eg, threonine, cysteine, etc.) , Acyl sarcosin sodium (lauroyl sarcosin sodium), acyl glutamate, acyl- ⁇ -alanine sodium, glutathione, pyrrolidone carboxylic acid and the like.
- alkali metal hydroxides such as sodium hydroxide, potassium hydroxide, ammonia (which may be aqueous ammonia), citric acid, tartrate acid, lactic acid, phosphoric acid, neutral amino acids (eg, threonine, cysteine, etc.) , Acyl sarcosin sodium (lauroyl sarcosin sodium), acyl glutamate, acyl- ⁇ -alanine sodium, glutathione,
- the content of the pH adjuster contained in 100 parts by mass of the cosmetic composition of the present disclosure is preferably 0.001 part by mass or more, more preferably 0.005 part by mass or more, and further preferably 0.01 part by mass or more. It is preferably 3 parts by mass or less, more preferably 1 part by mass or less, and further preferably 0.5 part by mass or less.
- Nonionic surfactants include POE sorbitan fatty acid esters (eg, POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monooleate, POE sorbitan tetraoleate, etc.); POE sorbitan fatty acid esters (eg, POE sorbitan monooleate).
- POE is a polyethylene glycol residue (when two hydroxyl groups are bonded, it is a polyoxyethylene unit. When one hydroxyl group is bonded, it is a polyoxyethylene unit having a hydroxyl group at the end. ),
- POP is a polypropylene glycol residue (a polyoxypropylene unit when two hydroxyl groups are bonded. When one hydroxyl group is bonded, a polyoxypropylene unit having a hydroxyl group at the end). Will be).
- POE / POP means POE or POP.
- anionic surfactant examples include fatty acid sequent (eg, sodium laurate, sodium palmitate, etc.); higher alkyl sulfate ester salts (eg, sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfate (eg, sodium lauryl sulfate, etc.).
- POE lauryl sulfate triethanolamine POE sodium lauryl sulfate, etc.
- N-acylsarcosic acid eg, sodium lauroylsulfosin, etc.
- higher fatty acid amide sulfonate eg, N-myristoyl-N-methyltaurine sodium, palm oil, etc.
- Phosphate ester salts POE oleyl ether phosphate sodium, POE stearyl ether phosphoric acid, etc.
- Sulfosuccinate eg, di-2-ethylhexyl sulfosuccinate sodium, mono Sodium lauroyl monoethanolamide polyoxyethylene sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc.
- Alkylbenzene sulfonate eg, sodium dodec
- Sulfated oil eg, funnel oil, etc.
- POE alkyl ether carboxylic acid POE alkyl allyl ether carboxylate; ⁇ -olefin sulfonate; higher fatty acid ester sulfonate; secondary alcohol sulfate ester salt; Higher fatty acid alkyrolamide sulfate ester salt; sodium lauroylmonoethanolamide succinate; N-palmitoyl aspartate ditriethanolamine; sodium caseinate; and the like.
- Examples of the cationic surfactant include an alkyltrimethylammonium salt (for example, stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); an alkylpyridinium salt (for example, cetylpyridinium chloride, etc.); Polychloride (N, N'-dimethyl-3,5-methylenepiperidinium); Alkyl quaternary ammonium salt; Alkyldimethylbenzylammonium salt; Alkylisoquinolinium salt; Dialkylmoriphonium salt; POEalkylamine; Alkylamine salts; polyamine fatty acid derivatives; ammonium alcohol fatty acid derivatives; benzalconium chloride; benzethonium chloride; and the like.
- an alkyltrimethylammonium salt for example, stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.
- an alkylpyridinium salt for example, cet
- amphoteric surfactant examples include imidazoline-based amphoteric surfactants (eg, 2-undesyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazolin sodium, 2-cocoyl-2-imidazolinium hydroki. Side-1-carboxyethyroxy 2-sodium salt, etc.); Betaine-based surfactants (eg, 2-heptadecyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkylbetaine, amide betaine) , Sulfobetaine, etc.); and the like.
- imidazoline-based amphoteric surfactants eg, 2-undesyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazolin sodium, 2-cocoyl-2-imidazolinium hydroki. Side-1-carboxyethy
- the content of the surfactant contained in 100 parts by mass of the cosmetic composition of the present disclosure is preferably 0.0001 parts by mass or more, more preferably 0.0005 parts by mass or more, and further preferably 0.001 parts by mass or more. It is preferably 5 parts by mass or less, more preferably 3 parts by mass or less, still more preferably 1 part by mass or less.
- the oil agent is not particularly limited, and examples thereof include fatty acids, fats and oils, ester oils, silicone oils, hydrocarbon oils, and the like. These components may be used alone or in combination of two or more. It can also be used.
- fatty acid examples include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, behenic acid, undecylenic acid, lanolinic acid, and isostearic acid.
- fats and oils examples include palm oil, palm oil, hydrogenated palm oil, avocado oil, sesame oil, olive oil, kukui nut oil, grape particle oil, safflower oil, almond oil, corn oil, cottonseed oil, sunflower seed oil, and grape seed oil.
- Hazel nut oil, macadamia nut oil, meadowfoam oil, rose hip oil and the like can be exemplified.
- ester oil examples include ethyl oleate, isopropyl myristate, isopropyl palmitate, myristyl myristate, cetyl palmitate, oleyl oleate, octyldodecyl myristate, octyldodecyl oleate, ethyl isostearate, isopropyl isostearate, and 2 -Cetyl ethylhexanate, cetostearyl 2-ethylhexanate, glyceryl tri2-ethylhexanate, glyceryl tri (caprylic capric acid), glyceryl triisopalmitate, pentaerythritol tetra2-ethylhexanate, isocetyl octanoate, Examples thereof include isostearyl octanate, isocetyl isostearate, octan
- silicone oil examples include methylpolysiloxane, highly polymerized methylpolysiloxane, methylphenylpolysiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.
- silicone oil examples include methylpolysiloxane, highly polymerized methylpolysiloxane, methylphenylpolysiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.
- examples thereof include methylcyclopolysiloxane, alcohol-modified silicone, alkyl-modified silicone, amino
- hydrocarbon oil examples include liquid paraffin, olive squalane, rice squalane, squalane, pristan, white petrolatum, paraffin wax, ozokelite, ceresin, and microcrystalline wax.
- Moisturizing agents include, for example, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile acid salt, dl-pyrrolidone carboxylate, short chain soluble collagen, diglycerin.
- EO PO adduct, Izayoi rose extract, Sulfuric acid extract, Merilot extract and the like can be mentioned.
- water-soluble polymer examples include plant-based polymers (for example, Arabic gum, tragacant gum, galactan, guagam, carob gum, karaya gum, carrageenan, pectin, canten, quince seed (malmero), algae colloid (cassow extract), starch (rice).
- plant-based polymers for example, Arabic gum, tragacant gum, galactan, guagam, carob gum, karaya gum, carrageenan, pectin, canten, quince seed (malmero), algae colloid (cassow extract), starch (rice).
- Micromolecular macromolecules eg, xanthan gum, dextran, succinoglucan, bulran, etc.
- Animal macromolecules eg, collagen, casein, albumin, gelatin, etc.
- Polymers eg, carboxymethyl starch, methyl hydroxypropyl starch, etc.
- Cellular polymers methyl cellulose, ethyl cellulose, methyl hydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose) , Cellulous powder, etc.
- Arginic acid-based polymer for example, sodium alginate, alginate propylene glycol ester, etc.
- Vinyl-based polymer for example, polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer (
- the content of the water-soluble polymer contained in 100 parts by mass of the cosmetic composition of the present disclosure is preferably 0.001 part by mass or more, more preferably 0.005 part by mass or more, and 0.05 part by mass or more. More preferably, it is preferably 3 parts by mass or less, more preferably 1 part by mass or less, and further preferably 0.5 part by mass or less.
- antioxidants examples include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters and the like.
- the ultraviolet absorber examples include a benzoic acid-based ultraviolet absorber (for example, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxyPABA ethyl ester).
- PABA paraaminobenzoic acid
- PABA monoglycerin ester N, N-dipropoxy PABA ethyl ester
- N, N-diethoxyPABA ethyl ester examples include a benzoic acid-based ultraviolet absorber (for example, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxyPABA ethyl ester).
- Examples of the chelating agent include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, tetrasodium edetate, and citrus.
- Examples thereof include sodium acid, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, and ethylenediamine hydroxyethyl triacetate trisodium.
- preservatives and antibacterial agents include parabens such as ethylparaben, isopropylparaben, butylparaben and benzylparaben and sodium salts thereof, benzoic acid, benzoate, alkyldiaminoethylglycine hydrochloride and photosensitizers.
- parabens such as ethylparaben, isopropylparaben, butylparaben and benzylparaben and sodium salts thereof, benzoic acid, benzoate, alkyldiaminoethylglycine hydrochloride and photosensitizers.
- Chlorcresol chlorobutanol, salicylic acid, salicylates, sorbic acid and its salts, dehydroacetic acid and its salts, trichlorohydroxydiphenyl ether (also known as triclosan), phenoxyethanol, phenol, lauryldiaminoethylglycine sodium, resorcin, zinc / ammonia / silver composite substitution Type zeolite, pantothenyl ethyl benzoate, isopropylmethylphenol, cetylpyridinium chloride, benzalkonium chloride, benzethonium chloride, chlorhexidine hydrochloride, orthophenylphenol, sodium orthophenylphenol, silver-copper zeolite, chlorhexidine gluconate, cresol, chloramine Examples thereof include T, chlorxylenol, chlorphenesin, chlorhexidine, 1,3-dimethylol-5,5-dimethylhydantoin, alkyl
- the content of the preservative and / or antibacterial agent contained in 100 parts by mass of the cosmetic composition of the present disclosure is preferably 0.001 part by mass or more, more preferably 0.01 part by mass or more, and 0.05 mass by mass. More than parts are more preferable, 5 parts by mass or less is preferable, 3 parts by mass or less is more preferable, and 1 part by mass or less is further preferable.
- fragrance examples include terpene terpenoids such as citral, menthol, ginger, salvinolin A, cannabinoid, hinokithiol, limonene, farnesol and vitamin A; aromatic alcohols such as phenoxyethanol, phenols such as eugenol and ginger; butyric acid esters. Examples thereof include esters such as propionic acid esters; lactones such as ⁇ -nonalactone and ⁇ -undecalactone; aldehydes having 6 to 20 carbon atoms; and the like. Ingredients that can be classified into both polyhydric alcohols and fragrances are classified as fragrances in the present invention.
- the content of other constituent substances with respect to 100% by mass of the cosmetic composition and the like of the present disclosure is preferably 0% by mass or more and 20% by mass or less, more preferably 0% by mass or more and 10% by mass or less. ..
- Other constituent substances may be used alone or in admixture of two or more. Further, among the other constituent substances, those having a specific amount specified above are preferably used in the amount specified above.
- the lipid particles of the present disclosure preferably have an average particle size of 10 nm or more, more preferably 30 nm or more, further preferably 50 nm or more, 80 nm or more, 100 nm or more, and 120 nm or more, and the upper limit of the average particle size is 600 nm or less. It is preferable that the order is 500 nm or less, 400 nm or less, 300 nm or less, 200 nm or less, and 180 nm or less. Within the above range, the storage stability of the cosmetic composition and the like of the present disclosure is further improved, the percutaneous permeability is further improved, and the skin barrier property tends to be improved.
- the lipid particles of the present disclosure preferably have an average particle diameter of 150 nm or more and 600 nm or less, more preferably 150 nm or more and 500 nm or less, and further preferably 160 nm or more and 400 nm or less. Within the above range, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- the lipid particles of the present disclosure preferably have a polydispersity of 0.5 or less, more preferably 0.4 or less, and even more preferably 0.3 or less. A particularly preferable polydispersity is 0.25 or less. Within the above range, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- the average particle size of the present disclosure means the average particle size obtained from the Einstein-Stokes equation by the dynamic light scattering method, and the polydispersity of the present disclosure is measured based on the cumulant method. Can be done.
- the cosmetic composition and the like of the present disclosure have a fluctuation rate of the average particle size after storage at 25 ° C. for one month ((average particle size after storage / average particle size before storage-1) ⁇ 100 (%)). Is preferably ⁇ 30% or less. Further, in the cosmetic composition and the like of the present disclosure, the fluctuation ratio of the average particle size after storage at 25 ° C.
- the cosmetic composition and the like of the present disclosure are excellent in long-term storage stability and have commercial utility value.
- the average particle size and polydispersity of the lipid particles can be measured by the method described in Examples.
- the cosmetic composition and the like of the present disclosure have a polydispersity of lipid particles of 0 after long-term storage (for example, storage at 4 ° C, 25 ° C, 40 ° C or 50 ° C for 1 month, 3 months or 6 months). It is preferably .5 or less, more preferably 0.4 or less, further preferably 0.3 or less, and particularly preferably 0.25 or less. Within the above range, the cosmetic compositions and the like of the present disclosure are excellent in long-term storage stability and have commercial utility value.
- the rate of change in the degree of polydispersity before and after long-term storage ((multi-dispersity after storage / multi-dispersity before storage-1) ⁇ 100 (%)) is preferably ⁇ 25% or less, preferably ⁇ 20. It is more preferably% or less, and further preferably ⁇ 15% or less.
- the abundance ratio of the lipid particles of 80 nm or more and 400 nm or less is preferably 70 area% or more and 100 area% or less, and 75 area% or more and 99 area% or less. More preferably, it is more preferably 80 area% or more and 98 area% or less. From the viewpoint of the feel of cosmetic compositions and the like, the abundance ratio of lipid particles (coarse particles) of 1000 nm or more is preferably 30 area% or less, more preferably 20 area% or less, still more preferably 15 area% or less.
- the abundance ratio of the lipid particles of the present disclosure in the particle size distribution can be calculated from the scattering intensity distribution obtained from the cumulant method analysis using, for example, FPAR-1000 (manufactured by Otsuka Electronics Co., Ltd.).
- the cosmetic composition and the like of the present disclosure have an abundance ratio of lipid particles exceeding 1000 nm after long-term storage (for example, storage at 4 ° C, 25 ° C, 40 ° C or 50 ° C for 1 month, 3 months or 6 months). 30 area% or less is preferable, 20 area% or less is more preferable, and 15 area% or less is further preferable. Within the above range, the cosmetic composition and the like of the present disclosure are excellent in long-term storage stability and have commercial utility value.
- the pH of the cosmetic composition and the like of the present disclosure is preferably, for example, 3.0 to 10.0, more preferably 3.5 to 9.5.
- the cosmetic composition and the like of the present disclosure have a change in pH value (before storage) after long-term storage (for example, storage at 4 ° C, 25 ° C, 40 ° C or 50 ° C for 1 month, 3 months or 6 months).
- pH-pH after storage is preferably ⁇ 1.2 or less, more preferably ⁇ 1.0 or less, and even more preferably ⁇ 0.8 or less.
- the cosmetic composition and the like of the present disclosure are excellent in long-term storage stability and have commercial utility value.
- the appearance of the cosmetic composition and the like of the present disclosure is preferably in a uniform state without precipitation, precipitation or layer separation, and after long-term storage (for example, at 4 ° C, 25 ° C, 40 ° C or 50 ° C). Even in the case of storage for 1 month, 3 months or 6 months), it is preferable that the product is in a uniform state without precipitation, precipitation or layer separation as before storage. Since it has the above-mentioned appearance characteristics, it can be said that the cosmetic composition and the like of the present disclosure are excellent in long-term storage stability and have commercial utility value.
- the cosmetic composition and the like of the present disclosure have a rich sensation, which is a unique sensation derived from lipid particles.
- liposomes when liposomes are included as lipid particles, there is a richness that is a unique feel derived from liposomes. Furthermore, it does not feel sticky or is not sticky.
- the cosmetic composition and the like of the present disclosure are excellent in permeability to the epidermis and dermis.
- percutaneous permeability such as permeability to the epidermis and dermal skin is a water-soluble fluorescent dye such as carboxyfluorescein or carboxyfluorescein derivative in a three-dimensional skin model or human skin, DiI (1,1'-dioctadecyl-3).
- the solution remaining on the skin or the upper part of the skin model after the permeability test and the solution permeated on the lower part can quantify the labeled compound by various methods.
- a method of image-analyzing a skin section to evaluate the degree of penetration of the labeled compound a method of extracting the labeled compound from the recovered skin and quantifying it by various analytical methods, and tape stripping the recovered skin. It can be evaluated by a method of collecting the stratum corneum layer by layer by a method for image analysis or a method of extracting a labeled compound and quantifying it by various analytical methods.
- the method for quantifying the labeled compound includes a detection method such as an ultraviolet-visible spectrophotometer, a fluorescence spectrophotometer, a differential refractometer, mass spectrometry, electrical conductivity, evaporation light scattering, and corona-charged particles, depending on the type of the labeled compound.
- a detection method such as an ultraviolet-visible spectrophotometer, a fluorescence spectrophotometer, a differential refractometer, mass spectrometry, electrical conductivity, evaporation light scattering, and corona-charged particles, depending on the type of the labeled compound.
- There is a method using a combination of devices such as liquid chromatography and gas chromatography, and a method using a quantification kit for a labeled compound.
- the lipid particles of the present disclosure preferably have a zeta potential on the particle surface of ⁇ 30 mV or less, more preferably ⁇ 40 mV or less, and even more preferably ⁇ 50 mV or less. Within the above range, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- the zeta potential can be measured by the method described in Examples.
- the zeta potential on the particle surface shows a positive or negative value, and the absolute value is preferably 5 mV or more, more preferably 10 mV or more, further preferably 20 mV or more, and even more preferably 30 mV. The above is particularly preferable.
- the zeta potential on the particle surface is a positive value and is in the above range, the percutaneous permeability of the cosmetic composition and the like of the present disclosure tends to be further improved. Further, when the zeta potential on the particle surface is in the above range with a negative value, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- the zeta potential can be measured by the method described in Examples.
- the solid content concentration of the lipid particles in the cosmetic composition or the like used for measuring the zeta potential is preferably lower than 0.5% by mass.
- lipid particles containing at least phospholipids, polyhydric alcohols and water are contained, and among the polyhydric alcohols, alcohols having a trihydric value or higher are 0 to 20 with respect to 100% by mass of the polyhydric alcohol.
- lipid particles containing at least phospholipids, polyhydric alcohols and water are contained, and among the polyhydric alcohols, alcohols having a trivalent or higher valence are 0 to 100% by mass with respect to 100% by mass of the polyhydric alcohol.
- a method of storing and using a cosmetic composition having a mass content of 20% by mass at 0 to 60 ° C. (preferably 4 to 50 ° C.) for 1 to 36 months (preferably 1 to 6 months) is included. ..
- the method for producing the cosmetic composition and the like of the present disclosure is not particularly limited. It is preferable to include and produce a composition containing a phospholipid, a polyhydric alcohol, and water, and if necessary, a medicinal ingredient, which comprises a step of mixing (hereinafter, also referred to as “mixing step”).
- Another aspect of the present invention comprises a mixing step of mixing a solution containing a phospholipid and a polyhydric alcohol with a solution containing water, wherein the polyhydric alcohol is based on 100% by mass of the polyhydric alcohol in the mixing step.
- the present invention includes a method for producing a cosmetic composition or a cosmetic non-medicinal product, which comprises 0 to 20% by mass of a trihydric or higher alcohol.
- a lipid solution (solution 1) containing a phospholipid and a polyhydric alcohol and a solution (solution 2) containing water are used as a microflow device. It is preferable to have a step of mixing using a device having a flow path structure such as.
- the mixing ratio (mass of solution 1 / mass of solution 2) of the lipid solution (solution 1) containing phospholipid and polyhydric alcohol and the solution containing water (solution 2) to the device having the flow path structure of the present disclosure is. It is preferably 99/1 to 1/99, more preferably 50/1 to 1/50, and even more preferably 25/1 to 1/25.
- the lipid solution (solution 1) of the present disclosure preferably contains a phospholipid and a polyhydric alcohol, more preferably contains sterols and lysophospholipids, and may further contain ceramide, further 1 It may contain valent alcohol.
- the above description is referred to for phospholipids, polyhydric alcohols, sterols, lysophospholipids, ceramides and monohydric alcohols.
- the lipid solution (solution 1) of the present disclosure may contain a medicinal component or may contain an oil-soluble component (oil-soluble component).
- the medicinal properties are as described above, and the medicinal properties used may be changed depending on the composition of the lipid solution.
- the water-containing solution (solution 2) of the present disclosure may contain a water-soluble component in addition to water.
- the water-soluble component include water-soluble polymers, monohydric alcohols, divalent alcohols, trihydric or higher alcohols, storage stability improvers, pH adjusters and the like.
- the water-soluble polymer monohydric alcohol, divalent alcohol, trihydric or higher alcohol, storage stability improver, and pH adjuster, the above description is referred to.
- the water-containing solution (solution 2) of the present disclosure may contain a medicinal component or a water-soluble component (water-soluble component).
- the medicinal properties are as described above, and the medicinal properties used may be changed depending on the composition of the solution containing water.
- the content of phospholipid in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 0.1 part by mass or more, more preferably 0.5 part by mass or more, further preferably 1 part by mass or more, and 95 parts by mass or less. Is preferable, 90 parts by mass or less is more preferable, and 80 parts by mass or less is further preferable.
- the content of polyvalent alcohol in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 5 parts by mass or more, more preferably 10 parts by mass or more, further preferably 15 parts by mass or more, and 99.9 parts by mass or less. It is preferably 99.5 parts by mass or less, more preferably 99 parts by mass or less.
- the content of sterol in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 0.01 part by mass or more, more preferably 0.05 part by mass or more, further preferably 0.1 part by mass or more, and 10 parts by mass. The following is preferable, 9.5 parts by mass or less is more preferable, and 9 parts by mass or less is further preferable.
- the content of lysophospholipid in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 0.01 parts by mass or more, more preferably 0.02 parts by mass or more, further preferably 0.03 parts by mass or more, and 20 parts by mass. It is preferably 10 parts by mass or less, more preferably 15 parts by mass or less, and even more preferably 10 parts by mass or less.
- the content of monovalent alcohol in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 0 parts by mass or more, more preferably 0.1 parts by mass or more, further preferably 1 part by mass or more, and 99 parts by mass or less. Is preferable, 90 parts by mass or less is more preferable, and 80 parts by mass or less is further preferable.
- the lipid solution (solution 1) of the present disclosure contains a medicinal ingredient
- the content of the medicinal ingredient in 100 parts by mass of the lipid solution (solution 1) is preferably 0 parts by mass or more, more preferably 0.01 parts by mass or more.
- 0.1 part by mass or more is further preferable, 50 parts by mass or less is preferable, 40 parts by mass or less is more preferable, and 30 parts by mass or less is further preferable.
- the content of water in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure is preferably 50 parts by mass or more, more preferably 75 parts by mass or more, further preferably 90 parts by mass or more, and even 100 parts by mass. good.
- the content of the water-soluble component in 100 parts by mass of the water-containing solution (solution 2) is preferably 50 parts by mass or less, preferably 25 parts by mass. The following is more preferable, 10 parts by mass or less is further preferable, and 0 parts by mass may be used.
- the content of the water-soluble polymer in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure may be 0 parts by mass or more, 0.01 parts by mass or more, and 0.02 parts by mass or more. It may be 20 parts by mass or less, 15 parts by mass or less, and 10 parts by mass or less.
- the content of monovalent alcohol in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure may be 0 parts by mass or more, 0.01 parts by mass or more, and 0.1 parts by mass or more. It may be 50 parts by mass or less, 25 parts by mass or less, and 10 parts by mass or less.
- the content of divalent alcohol in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure may be 0 parts by mass or more, 0.01 parts by mass or more, and 0.1 parts by mass or more. It may be 50 parts by mass or less, 25 parts by mass or less, and 10 parts by mass or less.
- the content of trivalent (or trivalent or higher) alcohol in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure may be 0 parts by mass or more, 0.01 parts by mass or more, and 0.1 parts by mass. It may be 50 parts by mass or less, 25 parts by mass or less, and 10 parts by mass or less.
- the content of the medicinal component in 100 parts by mass of the water-containing solution (solution 2) is preferably 0 parts by mass or more, preferably 0.01 mass by mass. More than parts are more preferable, 0.1 part by mass or more is further preferable, 50 parts by mass or less is more preferable, 40 parts by mass or less is more preferable, and 30 parts by mass or less is further preferable.
- the mixing step may be carried out using a disperser having a mechanical stirring structure such as a homogenizer, but it is preferably carried out using a device having a flow path structure such as a microflow device.
- a microflow device By manufacturing using a microflow device, the storage stability of the cosmetic composition and the like of the present disclosure tends to be further improved.
- the microflow device is not particularly limited, and examples thereof include the device described in International Publication No. 2018/190423.
- the microflow device is preferably a micromixer that mixes two or more liquids, and the micromixer is preferably a baffle mixer.
- the micromixer has a structure for mixing a liquid passing through a microchannel.
- the baffle mixer has a structure in which the baffle is arranged in a micro-sized flow path.
- phospholipids are self-assembled in the above mixing step to form lipid particles, but the method of forming lipid particles is not particularly limited.
- the mixing step may be carried out at room temperature, but may be carried out under heating conditions or cooling conditions.
- the above mixing step may be carried out under normal pressure, pressure, or reduced pressure.
- the production method of the present disclosure may include other steps such as a purification step, a concentration step, a dilution step, and the like, in addition to the above-mentioned mixing step.
- the obtained cosmetic composition or the like may be dried to obtain a powder.
- the drying method of the present disclosure include freeze-drying, vacuum drying, natural drying, spray drying, flash distillation and the like, and freeze-drying is more preferable. It may be dried in combination with a general concentration method.
- a general concentration method a distillation method such as atmospheric distillation, vacuum distillation, molecular distillation or flash distillation can also be used.
- Membrane separation methods such as ultrafiltration and centrifugation can also be used.
- the cosmetic composition and the like of the present disclosure are less sticky, have an excellent usability, and have excellent long-term storage stability, and therefore can be preferably applied to skin cosmetics, external skin preparations and the like.
- the term "for cosmetics" in the present disclosure means that it is used as a cosmetic, a quasi-drug, or a pharmaceutical product that is directly applied to the skin of a human body. Is included.
- the cosmetic composition and the like in the present disclosure are used for the above-mentioned uses and the like.
- the cosmetic composition may be used as it is as a cosmetic, or may be used as a cosmetic additive (raw material for cosmetics).
- lipid particles containing at least phospholipids, polyhydric alcohols and water are contained, and among the polyhydric alcohols, alcohols having a trihydric value or higher are 0 to 20 with respect to 100% by mass of the polyhydric alcohol.
- includes cosmetics comprising a composition which is by weight%.
- lipid particles containing at least phospholipids, polyhydric alcohols and water are contained, and among the polyhydric alcohols, alcohols having a trivalent or higher valence are 0 to 100% by mass with respect to 100% by mass of the polyhydric alcohol.
- a method for producing a cosmetic which comprises blending or using a composition which is 20% by mass.
- lipid particles containing at least phospholipids, polyhydric alcohols and water are contained, and among the polyhydric alcohols, alcohols having a trihydric value or higher are 0 to 100% by mass based on 100% by mass of the polyhydric alcohol. Includes the use of 20% by weight composition as a cosmetic.
- the method for producing the lipid particles of the present disclosure is not particularly limited, and the lipid particles can be produced, for example, by the method described in the method for producing a cosmetic composition or the like.
- Another aspect of the present invention comprises a mixing step of mixing a solution containing a phospholipid and a polyhydric alcohol with a solution containing water, wherein the polyhydric alcohol is based on 100% by mass of the polyhydric alcohol in the mixing step.
- the present invention includes a method for producing lipid particles, which comprises 0 to 20% by mass of a trihydric or higher alcohol.
- a device having a flow path structure such as a microflow device for a lipid solution containing phospholipids and polyhydric alcohol (solution 1) and a solution containing water (solution 2), is used. It is preferable to have a step of using and mixing.
- the mixing ratio (mass of solution 1 / mass of solution 2) of the lipid solution (solution 1) containing phospholipid and polyhydric alcohol and the solution containing water (solution 2) to the device having the flow path structure of the present disclosure is. It is preferably 99/1 to 1/99, more preferably 50/1 to 1/50, and even more preferably 25/1 to 1/25.
- the lipid solution (solution 1) of the present disclosure preferably contains a phospholipid and a polyhydric alcohol, more preferably contains sterols and lysophospholipids, and may further contain ceramide, further 1 It may contain valent alcohol.
- the above description is referred to for phospholipids, polyhydric alcohols, sterols, lysophospholipids, ceramides and monohydric alcohols.
- the lipid solution (solution 1) of the present disclosure may contain a medicinal component or may contain an oil-soluble component (oil-soluble component).
- the medicinal properties are as described above, and the medicinal properties used may be changed depending on the composition of the lipid solution.
- the water-containing solution (solution 2) of the present disclosure may contain a water-soluble component in addition to water.
- the water-soluble component include water-soluble polymers, monohydric alcohols, divalent alcohols, trihydric or higher alcohols, storage stability improvers, pH adjusters and the like.
- the water-soluble polymer monohydric alcohol, divalent alcohol, trihydric or higher alcohol, storage stability improver, and pH adjuster, the above description is referred to.
- the water-containing solution (solution 2) of the present disclosure may contain a medicinal component or a water-soluble component (water-soluble component).
- the medicinal properties are as described above, and the medicinal properties used may be changed depending on the composition of the solution containing water.
- the content of phospholipid in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 0.1 part by mass or more, more preferably 0.5 part by mass or more, further preferably 1 part by mass or more, and 95 parts by mass or less. Is preferable, 90 parts by mass or less is more preferable, and 80 parts by mass or less is further preferable.
- the content of polyvalent alcohol in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 5 parts by mass or more, more preferably 10 parts by mass or more, further preferably 15 parts by mass or more, and 99.9 parts by mass or less. It is preferably 99.5 parts by mass or less, more preferably 99 parts by mass or less.
- the content of sterol in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 0.01 part by mass or more, more preferably 0.05 part by mass or more, further preferably 0.1 part by mass or more, and 10 parts by mass. The following is preferable, 9.5 parts by mass or less is more preferable, and 9 parts by mass or less is further preferable.
- the content of lysophospholipid in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 0.01 parts by mass or more, more preferably 0.02 parts by mass or more, further preferably 0.03 parts by mass or more, and 20 parts by mass. It is preferably 10 parts by mass or less, more preferably 15 parts by mass or less, and even more preferably 10 parts by mass or less.
- the content of monovalent alcohol in 100 parts by mass of the lipid solution (solution 1) of the present disclosure is preferably 0 parts by mass or more, more preferably 0.1 parts by mass or more, further preferably 1 part by mass or more, and 99 parts by mass or less. Is preferable, 90 parts by mass or less is more preferable, and 80 parts by mass or less is further preferable.
- the lipid solution (solution 1) of the present disclosure contains a medicinal ingredient
- the content of the medicinal ingredient in 100 parts by mass of the lipid solution (solution 1) is preferably 0 parts by mass or more, more preferably 0.01 parts by mass or more.
- 0.1 part by mass or more is further preferable, 50 parts by mass or less is preferable, 40 parts by mass or less is more preferable, and 30 parts by mass or less is further preferable.
- the content of water in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure is preferably 50 parts by mass or more, more preferably 75 parts by mass or more, further preferably 90 parts by mass or more, and even 100 parts by mass. good.
- the content of the water-soluble component in 100 parts by mass of the water-containing solution (solution 2) is preferably 50 parts by mass or less, preferably 25 parts by mass. The following is more preferable, and 10 parts by mass or less is further preferable.
- the content of the water-soluble polymer in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure may be 0 parts by mass or more, 0.01 parts by mass or more, and 0.02 parts by mass or more. It may be 20 parts by mass or less, 15 parts by mass or less, and 10 parts by mass or less.
- the content of monovalent alcohol in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure may be 0 parts by mass or more, 0.01 parts by mass or more, and 0.1 parts by mass or more. It may be 50 parts by mass or less, 25 parts by mass or less, and 10 parts by mass or less.
- the content of divalent alcohol in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure may be 0 parts by mass or more, 0.01 parts by mass or more, and 0.1 parts by mass or more. It may be 50 parts by mass or less, 25 parts by mass or less, and 10 parts by mass or less.
- the content of trivalent (or trivalent or higher) alcohol in 100 parts by mass of the water-containing solution (solution 2) of the present disclosure may be 0 parts by mass or more, 0.01 parts by mass or more, and 0.1 parts by mass. It may be 50 parts by mass or less, 25 parts by mass or less, and 10 parts by mass or less.
- the content of the medicinal component in 100 parts by mass of the water-containing solution (solution 2) is preferably 0 parts by mass or more, preferably 0.01 mass by mass. More than parts are more preferable, 0.1 part by mass or more is further preferable, 50 parts by mass or less is more preferable, 40 parts by mass or less is more preferable, and 30 parts by mass or less is further preferable.
- ⁇ Phase transition temperature measurement> The lipid particle solution described in Examples was measured with DSC3500 (manufactured by Netch Co., Ltd.) by weighing several mg in an aluminum pan. It is heated from ⁇ 10 ° C. to 90 ° C. at a heating rate of 2 ° C./min, and the temperature at which the endothermic peak is confirmed is defined as the phase transition temperature of the lipid particles. If the phase transition temperature cannot be confirmed due to the above measurement conditions, the temperature is cooled from 25 ° C. to ⁇ 10 ° C. at a temperature lowering rate of 10 ° C./min, and the temperature at which the exothermic peak is confirmed is defined as the phase transition temperature of the lipid particles.
- the cosmetic composition (lipid particle solution) described in Examples was diluted 100-fold with pure water by a dynamic light scattering method, and Examples.
- the compounding composition (cosmetic water, prescription compound) diluted 100-fold with pure water was kept warm in a constant temperature bath at 25 ° C. for 30 minutes, and then measured under the condition of 25 ° C.
- the average particle size in the present disclosure means the average particle size obtained from the Einstein-Stokes equation by the dynamic light scattering method.
- the polydispersity in the present disclosure is obtained from the cumulant method analysis.
- ⁇ Zeta potential measurement> A 100-fold diluted lipid particle solution described in Examples with Zeta Sizar Nano ZSP (manufactured by Malvern) was kept warm in a constant temperature bath at 25 ° C. for 30 minutes, and then measured under 25 ° C. conditions.
- the cosmetic composition (lipid particle solution) and the compounding composition (cosmetic water, prescription compound) described in the examples are filled in a 30 mL glass container and heated at 4 ° C, 25 ° C, 40 ° C, or 50 ° C. After storage for 0.25 months, 1 month, 3 months or 6 months, the appearance, pH, average particle size and polydispersity after storage were measured.
- ⁇ Electron microscope observation> A transmission electron microscope H-7600 (manufactured by Hitachi, Ltd.) and a scanning electron microscope S-4800 (manufactured by Hitachi, Ltd.) were used.
- As the pretreatment method for electron microscope observation an ice embedding method, a negative staining method, a freeze fracture method, or the like can be used. It is also possible to use an observation kit such as Hitachi High-Tech K-kit.
- the sample was pretreated by an ice-embedded method using VITROBOT (manufactured by Thermo Fisher Scientific Co., Ltd.) or a negative staining method.
- VITROBOT manufactured by Thermo Fisher Scientific Co., Ltd.
- ⁇ Usage evaluation> A usability test was conducted by 8 professional evaluation panels.
- ELSD 350-360 kPa, 40 ° C, GAIN6 UV: 254 nm Developing solution: Methanol 100 vol% Column temperature: 45 ° C Driving amount: 5 ⁇ L Flow rate: 0.75 mL / min A cosmetic composition having an unknown concentration was diluted 40-fold with methanol, heated at 50 ° C. for 5 minutes, filtered through a membrane filter, and the filtrate solution was measured.
- the retention time of ELSD which is a typical component, is 12.5-13.5 minutes and 15.5 to 17.0 minutes for phospholipids, 4.0 to 6.5 minutes for lysophospholipids, and cholesterol. It is 11.5 to 12.5 minutes, and ceramide NG is 12.5 to 13.5 minutes.
- Injection volume 1.0 ⁇ L Vaporization chamber temperature: 250 ° C
- Injection mode Split total flow rate: 38.9 mL / min
- Split ratio 30.0
- Carrier gas Helium
- Detector FID Detector temperature: 250 ° C
- Injection port Split Injection temperature: 250 ° C
- the cosmetic composition having an unknown concentration was diluted 80-fold with methanol or 1-pentanol, heated at 50 ° C. for 5 minutes, collected by filtration through a membrane filter, and the filtrate solution was measured.
- the retention time of FID of a typical component is 1.5 to 2.5 minutes for ethanol, 18.0 to 19.0 minutes for 1,3-butanediol, and 15. It takes 5 to 16.5 minutes.
- Anode solution Aquamicron AX (manufactured by Mitsubishi Chemical Corporation)
- Cathode solution Aquamicron CXU (manufactured by Mitsubishi Chemical Corporation)
- a cosmetic composition having an unknown concentration was diluted 300-fold with ultra-dehydrated methanol and heated at 50 ° C. for 5 minutes to measure a solution. The amount of water contained in the ultra-dehydrated methanol measured in advance was subtracted from the measurement results as a background to calculate the amount of water contained in the cosmetic composition having an unknown concentration.
- Lipid solution in which 6 parts of Phosphoripon90H (manufactured by Lipoid) and 4 parts of SLP-PC70HS (manufactured by Tsuji Oil Co., Ltd.) are dissolved in 7 parts of 1,3-butanediol (manufactured by Daicel Co., Ltd.), 83 parts of water (manufactured by Daicel Co., Ltd.)
- the solution 2) was mixed in the flow path structure having the two flow paths described in Example 1 of WO2018 / 190423 to prepare a lipid particle solution (cosmetic composition 1 of the present disclosure).
- Lipid particle solutions were prepared in the same manner as in Production Example 1 except that the formulations (units were parts) shown in Table 1 were changed.
- Phosphoripon80H manufactured by Lipoid
- SLP-PC92H manufactured by Tsuji Oil Co., Ltd.
- lipid particle solution (composition for comparative cosmetics 7) was prepared by mixing in a flow path structure having two flow paths described in Example 1 of WO2018 / 190423.
- Table 2 shows the quantitative measurement results (unit:%) of various components and water contained in the lipid particle solution prepared in Production Examples 1 to 8.
- Table 3 shows the physical characteristics, appearance, and stability of the lipid particle solution prepared in Production Examples 1 to 8.
- the lipid particle solution in the present invention has excellent long-term stability.
- the feeling of use was evaluated for the lipid particle solutions of Production Examples 1 to 6, the judgment result of stickiness was ⁇ , and it was confirmed that there was no stickiness.
- the usability evaluations of Production Examples 7 and 8 were performed, the stickiness determination result was x and the richness determination result was ⁇ , and the richness peculiar to the lipid particles was slightly felt.
- lipid particle solutions obtained in Production Examples 1 to 4 were blended (in units) according to the formulations shown in Table 4 to prepare a lotion (blended compositions 1 to 4 of the present disclosure).
- Table 5 shows the physical characteristics and storage stability of the obtained compounding composition.
- ⁇ Production Example 9 Preparation of fluorescent dye-encapsulating lipid particle solution for skin permeability test> Lipid solution (solution 1), 5 (6) in which 6 parts of Phosphoripon90H (manufactured by Lipoid) and 4 parts of SLP-PC70HS (manufactured by Tsuji Oil Co., Ltd.) are dissolved in 7 parts of 1,3-butanediol (manufactured by Daicel Co., Ltd.).
- solution 2 of an aqueous solution in which carboxyfluorescein (manufactured by SIGMA ALDRICH, hereinafter abbreviated as fluorescent dye) is dissolved so as to be 0.1 M, is passed through the two channels described in Example 1 of WO2018 / 190423.
- the mixture was mixed in the flow path structure having a fluorescent dye to prepare a fluorescent dye-encapsulating lipid particle solution (cosmetic composition 9 of the present disclosure).
- the obtained fluorescent dye-encapsulating lipid particle solution was subjected to gel filtration to remove the fluorescent dye in the outer aqueous layer not contained in the lipid particles.
- the filter medium gel is Sephadex G-50 (manufactured by Citiva), and the eluent is a pH 7.5 solution (hereinafter referred to as Tris buffer solution) in which 0.1 M sodium chloride is dissolved in a 20 mM trishydroxymethylaminomethane hydrochloride aqueous solution. board.
- Tris buffer solution a pH 7.5 solution
- the physical characteristics of the obtained fluorescent dye-encapsulating lipid particle solution were an average particle diameter of 324 nm and a polydispersity of 0.243.
- the fluorescent dye concentration was 7.1 ⁇ 10 -4 M.
- ⁇ Skin permeability test using a three-dimensional skin model> A skin permeability test was carried out using the fluorescent dye-encapsulating lipid particle solution and the Tris buffer solution (pH 7.5) prepared in Production Example 9 as sample solutions.
- As the three-dimensional skin model LSE-high (human skin full-thickness model) sold by Roman Industrial Co., Ltd. was used.
- a three-dimensional skin model was cut out from the bottom of the LSE-high transwell.
- the three-dimensional skin model 4 is oriented toward the receiver liquid 1 side with the dermis side facing the vertical Franz diffusion cell (manufactured by Roman Industries, Ltd.) (shown in FIG. 2) (effective diffusion area: 1.13 cm).
- the sample solution 5 was applied to the epidermis layer side of the three-dimensional skin model 4.
- the constant temperature circulating water inlet 2 and the constant temperature circulating water outlet 3 are connected to the constant temperature circulating water tank, and 37 ° C. constant temperature water is flowed from the constant temperature circulating water inlet 2 toward the constant temperature circulating water outlet 3 in a vertical type. It was circulated around the outer peripheral portion of the Franz diffusion cell 7. The coating capacity of each sample solution was 1 mL per 1 cm 2 of effective diffusion area.
- the receiver solution 3.7 mL of Tris acid buffer solution (pH 7.5) was used.
- the receiver liquid 1 was stirred by rotating the stirrer 6 arranged in the receiver liquid 1 with a magnetic stirrer 8.
- the skin permeability test was carried out in a laboratory at room temperature of 25 ° C. and humidity of 60%. After 30 minutes, 120 minutes, 240 minutes, and 360 minutes after applying each sample solution, 0.25 mL of receiver solution 1 was sampled. After each sampling, 0.25 mL of fresh Tris buffer (pH 7.5) was added to each receiver phase. After 120 minutes, 240 minutes, and 360 minutes of sample solution application, a part of the three-dimensional skin model 4 was removed from the vertical Franz diffusion cell 7, and described in "Master of Cell / Tissue Staining (Yodosha) 2018".
- Frozen blocks were made according to the method. Using the prepared frozen block, a frozen section was prepared using Cliostar NX70 (manufactured by Thermo Scientific) at a sample table temperature of ⁇ 80 ° C., a knife temperature of -21 ° C., and a section thickness of 7 ⁇ m. Fluorescence observation of each frozen section was performed using a fluorescence microscope (ECLIPSE Ti2; manufactured by Nikon Solutions Center). As shown in FIG. 3, in a skin permeability test using a fluorescent dye-encapsulating lipid particle solution as a sample solution, fluorescence was confirmed in the epidermis and dermis. On the other hand, as shown in FIG.
- ⁇ Skin barrier property evaluation test using a three-dimensional skin model> A skin barrier property evaluation test was carried out using the fluorescent dye-encapsulating lipid particle solution and Tris buffer (pH 7.5) prepared in Production Example 9 as sample solutions.
- As the three-dimensional skin model LSE-high (human skin full-thickness model) sold by Roman Industrial Co., Ltd. was used.
- a three-dimensional skin model was cut out from the bottom of the LSE-high transwell.
- the three-dimensional skin model 4 is oriented toward the receiver liquid 1 side with the dermis side facing the vertical Franz diffusion cell (manufactured by Roman Industries, Ltd.) (shown in FIG. 2) (effective diffusion area: 1.13 cm).
- the receiver liquid 1 was stirred by rotating the stirrer 6 arranged in the receiver liquid 1 with a magnetic stirrer 8.
- the skin barrier property evaluation test was carried out in a laboratory at room temperature of 25 ° C. and humidity of 60%. 120 minutes after applying each sample solution, the applied sample solution was removed, and caffeine (manufactured by Wako Pure Chemical Industries, Ltd.) 10 mg / ml Tris buffer solution (pH 7.5) was applied. 0.25 mL of receiver solution 1 was sampled 30 minutes, 60 minutes, and 120 minutes after application of the caffeine solution. After each sampling, 0.25 mL of fresh Tris buffer (pH 7.5) was added to each receiver phase.
- the receiver liquid 1 obtained at each sampling time was diluted 3 to 10 times with Tris-HCl solution, and the amount of caffeine in the solution was quantified by liquid chromatography.
- the results are shown in FIG. It was found that the cumulative permeation amount of caffeine in the receiver liquid 1 of the fluorescent dye-encapsulating lipid particle solution test group was smaller than the cumulative permeation amount of caffeine in the receiver liquid 1 of the Tris buffer solution test group. It is considered that the barrier property of the three-dimensional skin model was improved and the permeation amount of caffeine applied later was reduced by applying the lipid particle solution in advance.
- Lipid particle solutions are the same as in Production Example 10 except that the raw materials shown in Table 6 are used and the formulations (units are parts) shown in Tables 7 and 8 are changed. , Compositions for Comparative Cosmetics 19-26) were prepared. Tables 9 and 10 show the quantitative measurement results (unit:%) of various components and water contained in the lipid particle solution prepared in Production Examples 10 to 26.
- the lipid particle solutions of Production Examples 10 to 18 in the present invention have an average particle size, polydispersity, coarse particle content, pH and appearance immediately after preparation even after storage at various temperatures. It was found that the particles were in a uniform state with no precipitation or precipitation, and were excellent in storage stability.
- ⁇ Mixed composition> A prescription formulation containing the lipid particle solution obtained in Production Example 10 or Production Example 14 (blending composition 5 to 7), and a prescription formulation blended with a formulation not containing the lipid particle solution (blending composition 8, 9) was prepared with the composition (unit: part) shown in Table 13 using the raw materials shown in Table 6. Immediately after the preparation, all of the compounding compositions were uniform without precipitation or precipitation, and were in a state worthy of evaluation of storage stability and usability.
- lipid particle solution for skin barrier evaluation test using a three-dimensional skin model Using the raw materials shown in Table 17, a lipid particle solution (cosmetic composition 30 of the present disclosure) was prepared in the same manner as in Production Example 10 except that the formulation (unit: part) shown in Table 17 was changed.
- the Tris buffer solution shown in Table 17 is a pH 7.5 solution (hereinafter referred to as Tris buffer solution) in which 0.1 M sodium chloride is dissolved in a 20 mM Trishydroxymethylaminomethane hydrochloride aqueous solution.
- the lipid particle solution obtained in Production Example 30 had an average particle size of 210 nm and a polydispersity of 0.19.
- ⁇ Skin barrier property evaluation test using a three-dimensional skin model> A skin barrier property evaluation test was carried out using the lipid particle solution prepared in Production Example 30 as a sample solution.
- T-Skin regenerated human skin full-thickness model sold by Nicoderm Research Co., Ltd. (hereinafter, Nicoderm Co., Ltd.) was used.
- a three-dimensional skin model was cut out from the bottom of the transwell of T-Skin.
- the three-dimensional skin model 4 is sandwiched between vertical Franz diffusion cells 7 (effective diffusion area: 1.13 cm 2 ) with the dermis side facing the receiver liquid 1, and the epidermis layer of the three-dimensional skin model 4.
- the sample liquid 5 was applied to the side.
- the constant temperature circulating water inlet 2 and the constant temperature circulating water outlet 3 are connected to the constant temperature circulating water tank, and 37 ° C. constant temperature water is flowed from the constant temperature circulating water inlet 2 toward the constant temperature circulating water outlet 3 in a vertical type. It was circulated around the outer peripheral portion of the Franz diffusion cell 7.
- the coating capacity of the sample solution was 1 mL per 1 cm 2 of effective diffusion area.
- As the receiver solution 3.7 mL of Tris buffer solution (pH 7.5) was used.
- the receiver liquid 1 was stirred by rotating the stirrer 6 arranged in the receiver liquid 1 with a magnetic stirrer 8.
- the skin barrier property evaluation test was carried out in a laboratory at room temperature of 25 ° C. and humidity of 60%.
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Abstract
Description
より詳しくは、皮膚化粧料、皮膚外用剤などに用いられるリン脂質を含む脂質粒子含有化粧料用組成物、化粧料用医薬部外品に関する。
例えば特許文献1には、リン脂質(A成分)、ステロール(B成分)、HLB12.0~16.0のポリオキシエチレンステロールエーテル(C成分)、多価アルコール(D成分)、水(E成分)を含有することを特徴とするリポソームが開示されており、粒径50nm以下の安定なリポソームを調製することができたことも開示されている。
例えば特許文献2には、以下を含む安定したユニラメラリポソーム懸濁液;外部相組成物中に懸濁されたリポソーム製剤であって、約50ナノメートルから約290ナノメートルの間の平均粒径を有する複数のユニラメラリポソーム粒子を含むリポソーム製剤、該リポソーム製剤は油溶性組成物と水溶性組成物から構成される水性のリポソーム溶液から形成され、該油溶性組成物はリポソーム溶液の重量に基づいて約5%から約33%の間の量で存在し、該水溶性組成物はリポソーム溶液の重量に基づいて約67%から約95%の間の量で存在し、該油溶性組成物はカップリング試薬、少なくとも1つのリン脂質、少なくとも1つの剛性エンハンサー、および酸化防止剤を含み;該外部相組成物はリポソーム懸濁液の重量に基づいて約30%から約75%の間の量で存在し、該外部相組成物は約0.95g/ccから約1.25g/ccの間の密度を有し、21℃で10秒-1のせん断速度において約2.5cPから約40,000cPの間の粘度を有し;該リポソーム懸濁液は約1.30から約1.45の屈折率を有し、約4℃から約50℃の温度で少なくとも30日間、または21℃の温度で少なくとも180日間の期間、ニートの形態で安定である、が開示されている。
例えば特許文献3には、成分(A)~(C):(A)25℃における粘度が100~300mPa・sであるリンゴ酸ジイソステアリル;(B)リン脂質;及び(C)多価アルコール;を含む、リン脂質ベシクル組成物を含む化粧料が開示されている。
すなわち本開示の化粧料用組成物又は化粧料用医薬部外品は、リン脂質を少なくとも含む脂質粒子、多価アルコール及び水を含み、多価アルコールのうち、多価アルコール100質量%に対して、3価以上のアルコールが0~20質量%であることを特徴とする、化粧料用組成物又は化粧料用医薬部外品である。
なお、以下において記載する本開示の個々の好ましい形態を2つ以上組み合わせたものもまた、本開示の好ましい形態である。
本開示の化粧料用組成物又は化粧料用医薬部外品(以下、「本開示の化粧料用組成物等」ともいう)は、リン脂質を少なくとも含む脂質粒子、多価アルコール及び水を必須成分として含む。なお、本開示における医薬部外品とは、薬事法に定められた医薬部外品であり、薬事法第二条二項に規定された厚生労働大臣が指定するものである。具体的には、人や動物の病気を診断、治療、改善、軽減、処置又は予防の目的で使用される物品のうち、医薬品よりも作用が軽微な物品を意味するものであって、例えば、薬事法によれば、医薬部外品とは医薬品の用途に使用される物品を除くものであって、人や動物の疾病の治療や予防に使われる製品、人体に対する作用が軽微であり、又は直接作用しない製品などが含まれる。医薬部外品を構成する成分は、日本薬局方、食品添加物公定書、日本産業規格及び医薬部外品原料規格に掲載されている。
本開示において、リン脂質を少なくとも含む脂質粒子とは、リン脂質を含む脂質によって構成される粒子を意味する。
本開示において、リン脂質としては、例えば、グリセリンやスフィンゴシンを中心骨格として脂肪酸とリン酸が結合し、さらにリン酸に、例えばアルコールがエステル結合した構造をもつ化合物であり、天然リン脂質、合成リン脂質、天然由来のリン脂質の不飽和炭素鎖を水素により飽和とした水素添加リン脂質などが挙げられる。上記脂肪酸としては、例えば、炭素数5~30の飽和脂肪酸又は不飽和脂肪酸が好ましく、炭素数10~25の直鎖飽和脂肪酸又は直鎖不飽和炭素鎖が好ましい。具体的なリン脂質としては、例えば、ホスファチジルコリン、ホスファチジルエタノールアミン、ホスファチジルセリン、ホスファチジルイノシトール、ホスファチジルグリセロール、卵黄レシチン、大豆レシチンなどの天然リン脂質;ジラウロイルホスファチジルコリン、ジミリストイルホスファチジルコリン、ジパルミトイルホスファチジルコリン、ジステアロイルホスファチジルコリン、ジオレオイルホスファチジルコリン、パルミトイル・オレオイルホスファチジルコリンなどの合成リン脂質;水素添加大豆レシチン、水素添加卵黄レシチン、水素添加ホスファチジルコリン、水素添加ホスファチジルセリンなどの水素添加リン脂質などを例示することができる。本開示のリン脂質は、好ましくはグリセリンに2つの脂肪酸とエステル化していてもよい1つのリン酸とが結合するグリセロリン脂質であり、より好ましくはグリセリンの3つの水酸基のうち2つに脂肪酸が結合し、1つにリン酸が結合し、リン酸にアルコールとしてコリンが結合したホスファチジルコリンである。本開示のリン脂質としてさらに好ましくは、脂肪酸の不飽和炭素鎖を水素により飽和した水素添加ホスファチジルコリンである。リン脂質の原料は特に制限されないが、好ましくは卵黄リン脂質と大豆リン脂質であり、より好ましくは大豆リン脂質であり、さらに好ましくは水素添加大豆リン脂質である。これらのリン脂質は1種類又は2種類以上を混合して用いることが出来る。
本開示のリン脂質としては、アシル基を2つ有するリン脂質を意味する。本明細書では、リン脂質にはリゾリン脂質は含めず、両者を区別して用いることとする。
本開示において、脂質は、上記リン脂質のみを含んでも良いが、上記リン脂質以外の脂質を含んでも良い。リン脂質以外の脂質には例えば単純脂質がある。単純脂質はC,H,Oの3元素だけから構成され、脂肪酸とアルコールが結合したエステル型の脂質である。結合するアルコールには長鎖アルコール、グリセロールなど多価アルコール、コレステロールやフィトステロールなどステロールなどがある。リン脂質以外の脂質にはその他例えば複合脂質がある。複合脂質はC,H,Oの3元素に加えて塩基のNやリン酸のPなどが含まれる。リン脂質以外の複合脂質としては、例えばスフィンゴ脂質や糖脂質などがある。リン脂質以外の脂質にはその他例えば不ケン化脂質である、アルカンや色素、脂溶性ビタミンなどがある。リン脂質以外の脂質は1種類又は2種類以上を用いることが出来る。
本開示の脂質粒子は、リン脂質以外の脂質として、ステロール、リゾリン脂質を含んでいてもよい。脂質粒子の安定化の観点からはステロールを用いることが好ましく、脂質粒子の小粒径化の観点からはリゾリン脂質を用いることが好ましい。
本開示のステロールとしては、ヒトを始めとした哺乳類や魚類の生体内に広く分布する化合物であるコレステロールと、植物に含まれるフィトステロールが挙げられ、コレステロールを用いることが好ましい。
本開示のコレステロールとしては、工業的には、主に羊毛脂から抽出、精製して得ることができる。その他、牛、豚の脳脊髄、魚油やイカの肝油等からも得ることが可能であるが、羊毛脂から得られたコレステロールを用いることが好ましい。本発明ではいずれの由来のものを使用してもよく、必要に応じて1種又は2種以上用いることができる。また、本開示のコレステロールは、エステル変性されていてもよい。
本開示のリゾリン脂質とは、アシル基を1つ有するリン脂質を意味する。本明細書では、リン脂質にはリゾリン脂質は含めず、両者を区別して用いることとする。
本開示のリゾリン脂質としては、例えば、グリセロリン脂質のグリセロールの1位または2位に結合している脂肪酸1分子が加水分解によりとれたものであってよい。
本開示のリゾリン脂質は、2本鎖の脂肪酸を有するリン脂質とは異なる化学的性質を有する。リゾリン脂質としては、具体的には、リゾホスファチジルコリン、リゾホスファチジルエタノールアミン、リゾホスファチジルセリン、リゾホスファチジルイノシトール、リゾホスファチジン酸、リゾホスファチジルグリセロール等の1種又は2種以上の混合物が挙げられる。これらのリゾリン脂質の中でも、油を水中に透明に分散させる観点からリゾホスファチジルコリンが好ましい。さらに好ましくは、脂肪酸の不飽和炭素鎖を水素により飽和した水素添加リゾホスファチジルコリンが好ましい。
リゾリン脂質の原料は特に制限されないが、大豆リゾリン脂質、水素添加大豆リゾリン脂質、卵黄リゾリン脂質、水素添加卵黄リゾリン脂質等が挙げられ、好ましくは大豆リゾリン脂質であり、さらに好ましくは水素添加大豆リゾリン脂質である。これらのリゾリン脂質は必要に応じて1種又は2種以上用いることができる。
本開示のリゾリン脂質としては下記一般式(1)に記載の構造であってよい。
一般式(1)におけるXは、水素原子又は極性基を表す。上記極性基としては、例えば、コリン、エタノールアミン、イノシトール、セリン、グリセロール、エタノール等のヒドロキシル基含有化合物(好ましくは、ヒドロキシル基を含有し、必要に応じてアミノ基、アルキルアミノ基、カルボン酸基から選ばれる少なくとも1種を有する炭素数2~10の脂肪族炭化水素)の炭素骨格に結合しているOH基を除いた残基が挙げられる。上記Xとしては、水素原子や、エタノールアミン、コリン、グリセロールの残基が好ましく、グリセロールの残基がより好ましい。
本開示の脂質粒子100質量部におけるコレステロールの含有量は、化粧料用組成物等の安定性の観点から1質量部以上が好ましく、5質量部以上がより好ましく、8質量部以上がさらに好ましく、35質量部以下が好ましく、30質量部以下がより好ましく、25質量部以下がさらに好ましい。
本開示の脂質粒子100質量部におけるリゾリン脂質の含有量は、化粧料用組成物等の安定性の観点から0.01質量部以上が好ましく、0.1質量部以上がより好ましく、1質量部以上がさらに好ましく、30質量部以下が好ましく、28質量部以下がより好ましく、25質量部以下がさらに好ましい。
本開示のセラミドとしては、化粧料等に使用できるものであれば限定されないが、以下のものとして定義することができる。すなわち、分子中に1個以上の長鎖(例えば、炭素数10以上)の直鎖及び/若しくは分岐アルキル又はアルケニル基、更に、少なくとも2個以上の水酸基、1個以上のアミド基(及び/又はアミノ基)を有する非イオン系両親媒性物質、あるいは当該非イオン系両親媒性物質の水酸基にホスファチジルコリン残基、又は糖残基が結合した誘導体として表現される一連のセラミド類である。例えば、スフィンゴシン、フィトスフィンゴシン及びそれらの長鎖脂肪酸アミドであるセラミドEOS、セラミドNS、セラミドNP、セラミドNG、セラミドEOH、セラミドAS、セラミドAG、セラミドAP、セラミドAH、セラミドNH、セラミドEOP、セラミドNDS、セラミドADS、セラミドEODS、セラミド3B等の天然セラミド類;スフィンゴシン、フィトスフィンゴシンのリン脂質誘導体であるスフィンゴミエリン、フィトスフィンゴミエリン等のスフィンゴリン脂質;それらの配糖体であるセレブロシドやガングリオシド等のスフィンゴ糖脂質及びフィトスフィンゴ糖脂質等が例示され、1種又は2種以上を組み合わせて用いることができる。本発明においては、セラミド類には、合成セラミド、プソイドセラミド等も含まれるが、本発明の技術の優位性からはこれらの中でも、天然セラミドが好ましく、特に優れた肌荒れ改善効果や保湿効果が得られるためには、セラミドNS、セラミドNG、セラミドNP、セラミド3B及びセラミドAPが好ましい。
本開示の脂質粒子におけるリン脂質とリゾリン脂質の合計100質量部に対するリン脂質の含有量は、脂質粒子の安定性の観点から30質量部以上が好ましく、45質量部以上がより好ましく、50質量部以上がさらに好ましく、99質量部以下が好ましく、98質量部以下がより好ましく、97質量部以下がさらに好ましい。
本開示の脂質粒子におけるリン脂質とリゾリン脂質の合計100質量部に対するリゾリン脂質の含有量は、脂質粒子の安定性の観点から1質量部以上が好ましく、2質量部以上がより好ましく、3質量部以上がさらに好ましく、70質量部以下が好ましく、55質量部以下がより好ましく、40質量部以下がさらに好ましい。
本開示の脂質粒子はマルチラメラ構造(多重層膜構造)であってもよいし、ユニラメラ構造(一枚膜構造)であっても良い。後述する薬効成分の効果の持続性を向上する観点からは、マルチラメラ構造であることが好ましい。本開示の化粧料用組成物等の外観の透明性を向上する観点からはユニラメラ構造であることが好ましい。
本開示の脂質粒子の蛍光異方性は、脂質粒子に蛍光物質を配合することで計測でき、値が低いほど脂質粒子の膜流動性が高いことが分かる。本開示の脂質粒子の膜流動性が高いことから、経皮浸透性が促進され、細胞間脂質の欠損箇所を補充する機能が向上する傾向にある。蛍光異方性は、本発明の粒子の皮膚内への分布挙動を観察できる物性になりうる。
本開示の化粧料用組成物等は、脂質粒子(又は脂質成分)を低い含有量で製造した後に、濃縮工程を経て、脂質粒子(又は脂質成分)を適切な含有量に調整してもよい。また、脂質粒子(又は脂質成分)が高い含有量となるよう製造した後に、希釈工程を経て、脂質粒子(又は脂質成分)を適切な含有量に調整してもよい。なお、適切な含有量とは、前記脂質粒子(又は脂質成分)の含有量範囲を指す。
本開示において多価アルコールは、分子中に2個以上のヒドロキシル基を持つアルコールである。ヒドロキシル基数によって、2価アルコール、3価以上のアルコールに分類される。多価アルコールは、多価アルコール重合体、その他分子中にヒドロキシル基を2個以上持つ化合物などであってもよい。多価アルコールは、分子中に2個以上のヒドロキシル基を持つC,H,Oの3元素だけから構成されるアルコールであることが好ましく、分子中に2個以上のヒドロキシル基を持つ炭化水素基及びヒドロキシル基から構成される、又は炭化水素基、ヒドロキシル基及びエーテル結合から構成されるアルコールであることがより好ましい。多価アルコールは、分子中にケトン基を有さないことが好ましい。
2価アルコールはヒドロキシル基を1分子中に2個有するアルコールであり、例えばエチレングリコール、ジエチレングリコール、トリエチレングリコール、プロピレングリコール、1,3-ブチレングリコール、1,2-ブタンジオール、1,4-ブチレングリコール、イソペンチルジオール、1,2-ペンタンジオール、1,2-ヘキサンジオール、1,2-オクタンジオール、1,2-デカンジオール、ジプロピレングリコール等の炭素数2~20、好ましくは炭素数2~10のアルカンジオールである。脂質粒子の凝集を抑制する観点から、2価アルコールとしては、1,3-ブチレングリコール、1,2-ペンタンジオール、イソペンチルジオール、1,2-ヘキサンジオール、1,2-オクタンジオール、1,2-デカンジオールが好ましく、1,3-ブチレングリコールおよび1,2-オクタンジオールがより好ましい。2価アルコールは、下記多価アルコール重合体又はその他分子中にヒドロキシル基を2個以上持つ化合物から選択されるものでもよい。
3価以上のアルコールはヒドロキシル基を1分子中に3個以上有するアルコールであり、3価アルコールは例えばグリセリンやトリメチロールプロパン、1,2,6-ヘキサントリオール等の炭素数3~20、好ましくは炭素数3~10のアルカントリオールであり、4価アルコールは例えばペンタエリスリトール等の炭素数4~20のアルカンテトラオールであり、5価アルコールは例えばキシリトール等の炭素数5~20のアルカンペンタオールであり、6価アルコールは例えばソルビトール、マンニトール等の炭素数6~20のアルカンヘキサオールである。3価以上のアルコールは、下記多価アルコール重合体又はその他分子中にヒドロキシル基を2個以上持つ化合物から選択されるものでもよい。
上記多価アルコール重合体は例えば、ジエチレングリコール、ジプロピレングリコール、トリエチレングリコール、ポリプロピレングリコール、テトラエチレングリコール、ジグリセリン、ポリエチレングリコール、トリグリセリン、テトラグリセリン、ポリグリセリン等である。
上記その他分子中にヒドロキシル基を2個以上持つ化合物としては、グリセリンモノアルキルエーテルが挙げられ、該グリセリンモノアルキルエーテルは例えば、キシルアルコール、セラキルアルコール、バチルアルコール等である。また、その他分子中にヒドロキシル基を2個以上持つ化合物としては糖アルコールも挙げられ、糖アルコールは例えば、ソルビトール、マルチトール、マルトトリオース、マンニトール、ショ糖、エリトリトール、グルコース、フルクトース、デンプン分解糖、マルトース、キシリトース、デンプン分解糖還元アルコール等である。
これら多価アルコールは1種類又は2種類以上を混合して用いることが出来る。
本開示の化粧料用組成物等において3価以上のアルコールは多価アルコール100質量%に対して、0~20質量%である。より好ましくは0~15質量%であり、特に好ましくは0~10質量%である。上記範囲にあることにより化粧料用組成物等は保存安定性がよく、またべたつきが少なく、使用感に優れるものとなる傾向にある。なお、化粧料用組成物等に3価以上のアルコールを配合することも好ましい態様であり、3価以上のアルコールを、多価アルコール100質量%に対して1質量%以上、好ましくは5質量%以上、より好ましくは10質量%以上含有してもよい。本開示において、2価アルコールは多価アルコール100質量%に対して、好ましくは80質量%以上であり、より好ましくは85質量%以上であり、さらに好ましくは90質量%以上であり、特に好ましくは95質量%以上であり、また100質量%であってもよい。
本開示の化粧料用組成物等において、2価のアルコール及び3価以上のアルコールの合計含有量100質量部における3価以上のアルコールの含有量は、0~50質量部が好ましく、より好ましくは0~40質量部であり、さらに好ましくは0~30質量部であり、よりさらに好ましくは0~25質量部であり、特に好ましく0~20質量部である。上記範囲にあることにより化粧料用組成物等はべたつきが少なく、使用感に優れるものとなる傾向にある。本開示において、2価のアルコール及び3価以上のアルコールの合計含有量100質量部における2価のアルコールの含有量は、好ましくは50質量部以上であり、より好ましくは60質量部以上であり、さらに好ましくは70質量部以上であり、よりさらに好ましくは75質量部以上であり、特に好ましくは80質量部以上である。
本開示において水は、通常の水道水、イオン交換水、純水、軟水、硬水、天然水、海洋深層水、アルカリイオン水、その他各種方法によって得られる精製水等が挙げられる。なお、本開示において水には、塩類や金属類を含んだ水、水系の緩衝液等も含まれ、前記水系の緩衝液としては、リン酸緩衝液、Tris緩衝液等が挙げられる。本開示の化粧料用組成物等は、化粧料用組成物等合計100質量%に対して、水を50質量%以上含むことが好ましく、60質量%以上含むことがより好ましく、70質量%以上含むことがさらに好ましい。一方、本開示の化粧料用組成物等は、化粧料用組成物等合計100質量%に対して、水を95質量%以下含むことが好ましく、90質量%以下で含むことがより好ましく、85質量%以下含むことがさらに好ましい。上記範囲であると、本開示の化粧料用組成物等の保存安定性がより向上する傾向にある。
本開示の化粧料用組成物等は、保存安定性向上剤を含んでもよい。保存安定性向上剤を用いると、化粧料用組成物等の保存安定性がさらに向上する。保存安定性向上剤としては、例えば、水酸化カルシウム、水酸化マグネシウム等のアルカリ土類金属の水酸化物;炭酸カルシウム、炭酸アンモニウム等のアルカリ土類金属又はアンモニアの炭酸塩、アミン類(ジメチルアミン、ジエチルアミン、トリメチルアミン、トリエチルアミン等のアルキルアミン;モルホリン等の環状アミン;トリエタノールアミン、ジエタノールアミン等のアルコールアミン等)、塩基性アミノ酸(例えば、ヒドロキシリジン、リシン、アルギニン、ヒスチジン、トリプトファン、オルニチン等)等が挙げられ、アルカリ土類金属の水酸化物、アルコールアミン、塩基性アミノ酸等が好ましい。
本開示の化粧料用組成物等に含まれる保存安定性向上剤の量は、0.1ppm(質量基準;以下、同様)以上が好ましく、1ppm以上がより好ましく、10ppm以上がさらに好ましく、1質量%以下が好ましく、3000ppm以下がより好ましく、1000ppm以下がさらに好ましい。
推測するに、保存安定性向上剤が脂質粒子間に入り込み、保存安定性向上剤の負電荷と脂質粒子表面の負電荷が静電反発することによって、脂質粒子の保存安定性が向上したと考えられる。
本開示の化粧料用組成物等は、上記のリン脂質を少なくとも含む脂質粒子、多価アルコール、水、及び保存安定性向上剤以外の物質を含んでいてもよい。例えば、増粘剤、粉末成分、pH調整剤、非イオン性界面活性剤、陰イオン性界面活性剤、陽イオン性界面活性剤、両性界面活性剤、油剤、保湿剤、水溶性高分子、抗酸化剤、紫外線吸収剤、キレート剤、防腐剤、抗菌剤、着色剤、香料等である。通常化粧料に配合されるものであれば適宜配合することが出来る。本開示の化粧料用組成物等は、1価のアルコール、2価のアルコールジアルキルエーテル又は2価のアルコールエーテルエステル等を含んでいても良い。
本開示の2価のアルコールジアルキルエーテルとしては、エチレングリコールジメチルエーテル、エチレングリコールジエチルエーテル、エチレングリコールジブチルエーテル等のC2-6アルカンジオールジC1-10アルキルエーテル等が挙げられ、エチレングリコールジC1-6アルキルエーテルが好ましい。
本開示の2価のアルコールエーテルエステルとしては、エチレングリコールモノメチルエーテルアセテート、エチレングリコールモノエチルエーテルアセテート、エチレングリコールモノブチルエーテルアセテート、エチレングリコールモノフェニルエーテルアセテート、エチレングリコールジアジベート、エチレングリコールジサクシネート、ジエチレングリコールモノエチルエーテルアセテート、ジエチレングリコールモノブチルエーテルアセテート、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノエチルエーテルアセテート、プロピレングリコールモノプロピルエーテルアセテート、プロピレングリコールモノフェニルエーテルアセテート等のC2-6アルカンジオールモノC2-6カルボン酸エステルと炭素数1~10のアルコールとのエーテル化合物が挙げられる。
本開示の化粧料用組成物等100質量部に含まれる増粘剤の含有量は、0.001質量部以上が好ましく、0.005質量部以上がより好ましく、0.05質量部以上がさらに好ましく、3質量部以下が好ましく、1質量部以下がより好ましく、0.5質量部以下がさらに好ましい。
本開示の化粧料用組成物等100質量部に含まれるpH調整剤の含有量は、0.001質量部以上が好ましく、0.005質量部以上がより好ましく、0.01質量部以上がさらに好ましく、3質量部以下が好ましく、1質量部以下がより好ましく、0.5質量部以下がさらに好ましい。
本開示の化粧料用組成物等100質量部に含まれる界面活性剤の含有量は、0.0001質量部以上が好ましく、0.0005質量部以上がより好ましく、0.001質量部以上がさらに好ましく、5質量部以下が好ましく、3質量部以下がより好ましく、1質量部以下がさらに好ましい。
本開示の化粧料用組成物等100質量部に含まれる水溶性高分子の含有量は、0.001質量部以上が好ましく、0.005質量部以上がより好ましく、0.05質量部以上がさらに好ましく、3質量部以下が好ましく、1質量部以下がより好ましく、0.5質量部以下がさらに好ましい。
本開示の化粧料用組成物等100質量部に含まれる防腐剤及び/又は抗菌剤の含有量は、0.001質量部以上が好ましく、0.01質量部以上がより好ましく、0.05質量部以上がさらに好ましく、5質量部以下が好ましく、3質量部以下がより好ましく、1質量部以下がさらに好ましい。
本開示の脂質粒子は、平均粒子径が10nm以上が好ましく、30nm以上がより好ましく、50nm以上、80nm以上、100nm以上、120nm以上の順でさらに好ましく、平均粒子径の上限値としては600nm以下が好ましく、500nm以下、400nm以下、300nm以下、200nm以下、180nm以下の順でより好ましい。上記範囲であることにより、本開示の化粧料用組成物等の保存安定性がより向上し、経皮浸透性がより向上し、皮膚バリア性が向上する傾向にある。
本開示の脂質粒子は、平均粒子径が150nm以上、600nm以下であることが好ましく、150nm以上、500nm以下であることがより好ましく、160nm以上、400nm以下であることがさらに好ましい。上記範囲であることにより、本開示の化粧料用組成物等の保存安定性がより向上する傾向にある。
本開示の脂質粒子は、多分散度が0.5以下であることが好ましく、0.4以下であることがより好ましく、0.3以下であることがさらに好ましい。特に好ましい多分散度は0.25以下である。上記範囲であることにより、本開示の化粧料用組成物等の保存安定性がより向上する傾向にある。また、経皮浸透性がより向上し、皮膚バリア性が向上する傾向にある。
なお、本開示の平均粒子径は、動的光散乱法にて、アインシュタイン・ストークスの式から得られた平均粒子径を意味し、本開示の多分散度は、キュムラント法に基づいて測定することができる。
本開示の化粧料用組成物等は、25℃で1か月保存後の平均粒子径の変動割合((保存後の平均粒子径/保存前の平均粒子径-1)×100(%))が±30%以下であることが好ましい。さらに、本開示の化粧料用組成物等は、25℃で1か月保存後の平均粒子径の変動割合が±20%以下であることが好ましく、±18%以下であることがより好ましく、±15%以下であることがさらに好ましい。特に好ましくは±10%以下である。上記範囲であることにより、本開示の化粧料用組成物等は長期の保存安定性に優れ、商業的に利用価値がある。
なお脂質粒子の平均粒子径、多分散度は実施例記載の方法で測定できる。
本開示の化粧料用組成物等は、長期保存後(例えば、4℃、25℃、40℃又は50℃で、1ヶ月、3ヶ月又は6ヶ月間保存)における1000nm超の脂質粒子の存在比率が30面積%以下が好ましく、20面積%以下がより好ましく、15面積%以下がさらに好ましい。上記範囲であることにより、本開示の化粧料用組成物等は長期の保存安定性に優れ、商業的に利用価値がある。
本開示の化粧料用組成物等は、長期保存後(例えば、4℃、25℃、40℃又は50℃で、1ヶ月、3ヶ月又は6ヶ月間保存)におけるpHの変化値(保存前のpH-保存後のpH)が±1.2以下であることが好ましく、±1.0以下であることがより好ましく、±0.8以下であることがさらに好ましい。上記範囲であることにより、本開示の化粧料用組成物等は長期の保存安定性に優れ、商業的に利用価値がある。
また、本開示の化粧料用組成物等は、表皮および真皮への浸透性に優れる。
なお、表皮および真皮への浸透性などの経皮浸透性は、3次元皮膚モデルやヒト皮膚などにカルボキシフルオレセインやカルボキシフルオレセイン誘導体などの水溶性蛍光色素、DiI(1,1’-ジオクタデシル-3,3,3’,3’-テトラメチルインドカルボシアニン過塩素酸塩)、DiO(3,3’-ジオクタデシルオキサカルボシアニン過塩素酸塩)などの油溶性蛍光色素、薬効成分、特定の脂質や蛍光標識物質などの標識化合物を含んだ脂質粒子を含有する化粧料用組成物等を適応し、皮膚透過性試験を行うことによって、評価することができる。標識化合物の浸透性は、透過性試験後の皮膚または皮膚モデル上部に残った溶液、下部に透過した溶液および透過性試験後の皮膚を分析することで評価できる。透過性試験後の皮膚または皮膚モデル上部に残った溶液、下部に透過した溶液は、標識化合物を種々の方法で定量することができる。透過性試験後の皮膚は、皮膚切片を画像解析し、標識化合物の浸透度合いを評価する方法、回収した皮膚から標識化合物を抽出し、種々の分析手法で定量する方法、回収した皮膚をテープストリッピング法で角層を層毎に回収し、画像解析する方法や標識化合物を抽出し、種々の分析手法で定量する方法で評価することができる。皮膚切片の画像解析では、共焦点レーザー顕微鏡蛍光顕微鏡、光学顕微鏡および小角広角X線散乱を用いることができる。標識化合物の定量方法は、標識化合物の種類に応じて、紫外可視分光光度計、蛍光分光光度計、示差屈折率、質量分析、電気伝導度、蒸発光散乱およびコロナ荷電荷粒子などの検出方法と液体クロマトグラフィーやガスクロマトグラフィーなどの装置の組合せによって行う方法と標識化合物の定量キットを用いる方法がある。
本開示の脂質粒子は粒子表面のゼータ電位はプラスまたはマイナスの値を示し、絶対値が5mV以上であることが好ましく、10mV以上であることがより好ましく、20mV以上であることがさらに好ましく、30mV以上であることが特に好ましい。粒子表面のゼータ電位がプラスの値で上記範囲であることにより、本開示の化粧料用組成物等の経皮浸透性がより向上する傾向がある。また、粒子表面のゼータ電位がマイナスの値で上記範囲であることにより、本開示の化粧料用組成物等の保存安定性がより向上する傾向にある。なお、ゼータ電位は実施例記載の方法で測定できる。
ゼータ電位の測定に用いる化粧料用組成物等中の脂質粒子の固形分濃度は0.5質量%よりも低濃度であることが好ましい。
また本発明の別の態様には、リン脂質を少なくとも含む脂質粒子、多価アルコール及び水を含み、多価アルコールのうち、多価アルコール100質量%に対して、3価以上のアルコールが0~20質量%である化粧料用組成物を、0~60℃(好ましくは、4~50℃)で1~36ヶ月間(好ましくは、1~6ヶ月間)保管して使用する方法が含まれる。
本開示の化粧料用組成物等の製造方法は、特に制限されない。好ましくは、リン脂質、多価アルコール、および水と、必要に応じて薬効成分とを含む組成物を、混合させる工程(以下、「混合工程」ともいう)を含み、製造することが好ましい。
本開示の流路構造を有するデバイスへのリン脂質と多価アルコールを含む脂質溶液(溶液1)と、水を含む溶液(溶液2)の混合割合(溶液1の質量/溶液2の質量)は99/1~1/99が好ましく、50/1~1/50がより好ましく、25/1~1/25がさらに好ましい。
本開示の脂質溶液(溶液1)には、薬効成分を含んでいても良く、油溶性を示す成分(油溶性成分)を含んでいても良い。薬効成分は上述の通りであり、脂質溶液の組成によって用いる薬効成分は変化させてもよい。
本開示の水を含む溶液(溶液2)には、薬効成分を含んでいても良く、水溶性を示す成分(水溶性成分)を含んでいても良い。薬効成分は上述の通りであり、水を含む溶液の組成によって用いる薬効成分は変化させてもよい。
本開示の脂質溶液(溶液1)100質量部における多価アルコールの含有量は5質量部以上が好ましく、10質量部以上がより好ましく、15質量部以上がさらに好ましく、99.9質量部以下が好ましく、99.5質量部以下がより好ましく、99質量部以下がさらに好ましい。
本開示の脂質溶液(溶液1)100質量部におけるステロールの含有量は0.01質量部以上が好ましく、0.05質量部以上がより好ましく、0.1質量部以上がさらに好ましく、10質量部以下が好ましく、9.5質量部以下がより好ましく、9質量部以下がさらに好ましい。
本開示の脂質溶液(溶液1)100質量部におけるリゾリン脂質の含有量は0.01質量部以上が好ましく、0.02質量部以上がより好ましく、0.03質量部以上がさらに好ましく、20質量部以下が好ましく、15質量部以下がより好ましく、10質量部以下がさらに好ましい。
本開示の脂質溶液(溶液1)100質量部における1価のアルコールの含有量は0質量部以上が好ましく、0.1質量部以上がより好ましく、1質量部以上がさらに好ましく、99質量部以下が好ましく、90質量部以下がより好ましく、80質量部以下がさらに好ましい。
本開示の脂質溶液(溶液1)が薬効成分を含む際には、脂質溶液(溶液1)100質量部における薬効成分の含有量は、0質量部以上が好ましく、0.01質量部以上がより好ましく、0.1質量部以上がさらに好ましく、50質量部以下が好ましく、40質量部以下がより好ましく、30質量部以下がさらに好ましい。
本開示の水を含む溶液(溶液2)が水溶性成分を含む際には、水を含む溶液(溶液2)100質量部における水溶性成分の含有量は50質量部以下が好ましく、25質量部以下がより好ましく、10質量部以下がさらに好ましく、0質量部であってもよい。
本開示の水を含む溶液(溶液2)100質量部における水溶性高分子の含有量は0質量部以上であってよく、0.01質量部以上、0.02質量部以上であってよく、20質量部以下、15質量部以下、10質量部以下であってよい。
本開示の水を含む溶液(溶液2)100質量部における1価のアルコールの含有量は0質量部以上であってよく、0.01質量部以上、0.1質量部以上であってよく、50質量部以下、25質量部以下、10質量部以下であってよい。
本開示の水を含む溶液(溶液2)100質量部における2価のアルコールの含有量は0質量部以上であってよく、0.01質量部以上、0.1質量部以上であってよく、50質量部以下、25質量部以下、10質量部以下であってよい。
本開示の水を含む溶液(溶液2)100質量部における3価(又は3価以上)のアルコールの含有量は0質量部以上であってよく、0.01質量部以上、0.1質量部以上であってよく、50質量部以下、25質量部以下、10質量部以下であってよい。
本開示の水を含む溶液(溶液2)が薬効成分を含む際には、水を含む溶液(溶液2)100質量部における薬効成分の含有量は、0質量部以上が好ましく、0.01質量部以上がより好ましく、0.1質量部以上がさらに好ましく、50質量部以下が好ましく、40質量部以下がより好ましく、30質量部以下がさらに好ましい。
本開示の製造方法は、上記混合工程の他に、精製工程、濃縮工程、希釈工程等、その他の工程を含んでも良い。
本開示の化粧料用組成物等は、べたつきが少なく使用感に優れ、長期の保存安定性に優れるため、皮膚化粧料、皮膚外用剤などに好ましく適用できる。
本開示における化粧料用とは人体の皮膚に直接塗布する化粧品、医薬部外品、医薬品として用いることを意味し、化粧料には皮膚化粧料、皮膚外用剤、頭髪化粧料、頭髪外用剤等が含まれる。本開示における化粧料用組成物等とは上記用途等に用いられる。化粧料用組成物はそのまま化粧料として使用しても良く、化粧料用添加剤(化粧料用原料)として使用しても良い。
また本発明の別の態様には、リン脂質を少なくとも含む脂質粒子、多価アルコール及び水を含み、多価アルコールのうち、多価アルコール100質量%に対して、3価以上のアルコールが0~20質量%である組成物を配合又は使用することを特徴とする化粧料の製造方法が含まれる。
さらに本発明の別の態様には、リン脂質を少なくとも含む脂質粒子、多価アルコール及び水を含み、多価アルコールのうち、多価アルコール100質量%に対して、3価以上のアルコールが0~20質量%である組成物の化粧料としての使用が含まれる。
本開示の脂質粒子の製造方法は特に制限されず、例えば上記化粧品組成物等の製造方法で記載された方法で製造出来る。
本開示の流路構造を有するデバイスへのリン脂質と多価アルコールを含む脂質溶液(溶液1)と、水を含む溶液(溶液2)の混合割合(溶液1の質量/溶液2の質量)は99/1~1/99が好ましく、50/1~1/50がより好ましく、25/1~1/25がさらに好ましい。
本開示の脂質溶液(溶液1)には、薬効成分を含んでいても良く、油溶性を示す成分(油溶性成分)を含んでいても良い。薬効成分は上述の通りであり、脂質溶液の組成によって用いる薬効成分は変化させてもよい。
本開示の水を含む溶液(溶液2)には、薬効成分を含んでいても良く、水溶性を示す成分(水溶性成分)を含んでいても良い。薬効成分は上述の通りであり、水を含む溶液の組成によって用いる薬効成分は変化させてもよい。
本開示の脂質溶液(溶液1)100質量部における多価アルコールの含有量は5質量部以上が好ましく、10質量部以上がより好ましく、15質量部以上がさらに好ましく、99.9質量部以下が好ましく、99.5質量部以下がより好ましく、99質量部以下がさらに好ましい。
本開示の脂質溶液(溶液1)100質量部におけるステロールの含有量は0.01質量部以上が好ましく、0.05質量部以上がより好ましく、0.1質量部以上がさらに好ましく、10質量部以下が好ましく、9.5質量部以下がより好ましく、9質量部以下がさらに好ましい。
本開示の脂質溶液(溶液1)100質量部におけるリゾリン脂質の含有量は0.01質量部以上が好ましく、0.02質量部以上がより好ましく、0.03質量部以上がさらに好ましく、20質量部以下が好ましく、15質量部以下がより好ましく、10質量部以下がさらに好ましい。
本開示の脂質溶液(溶液1)100質量部における1価のアルコールの含有量は0質量部以上が好ましく、0.1質量部以上がより好ましく、1質量部以上がさらに好ましく、99質量部以下が好ましく、90質量部以下がより好ましく、80質量部以下がさらに好ましい。
本開示の脂質溶液(溶液1)が薬効成分を含む際には、脂質溶液(溶液1)100質量部における薬効成分の含有量は、0質量部以上が好ましく、0.01質量部以上がより好ましく、0.1質量部以上がさらに好ましく、50質量部以下が好ましく、40質量部以下がより好ましく、30質量部以下がさらに好ましい。
本開示の水を含む溶液(溶液2)が水溶性成分を含む際には、水を含む溶液(溶液2)100質量部における水溶性成分の含有量は50質量部以下が好ましく、25質量部以下がより好ましく、10質量部以下がさらに好ましい。
本開示の水を含む溶液(溶液2)100質量部における水溶性高分子の含有量は0質量部以上であってよく、0.01質量部以上、0.02質量部以上であってよく、20質量部以下、15質量部以下、10質量部以下であってよい。
本開示の水を含む溶液(溶液2)100質量部における1価のアルコールの含有量は0質量部以上であってよく、0.01質量部以上、0.1質量部以上であってよく、50質量部以下、25質量部以下、10質量部以下であってよい。
本開示の水を含む溶液(溶液2)100質量部における2価のアルコールの含有量は0質量部以上であってよく、0.01質量部以上、0.1質量部以上であってよく、50質量部以下、25質量部以下、10質量部以下であってよい。
本開示の水を含む溶液(溶液2)100質量部における3価(又は3価以上)のアルコールの含有量は0質量部以上であってよく、0.01質量部以上、0.1質量部以上であってよく、50質量部以下、25質量部以下、10質量部以下であってよい。
本開示の水を含む溶液(溶液2)が薬効成分を含む際には、水を含む溶液(溶液2)100質量部における薬効成分の含有量は、0質量部以上が好ましく、0.01質量部以上がより好ましく、0.1質量部以上がさらに好ましく、50質量部以下が好ましく、40質量部以下がより好ましく、30質量部以下がさらに好ましい。
なお実施例(製造例)における各測定は、それぞれ以下のように行った。
<pH測定>
pH電極9615S(株式会社堀場製作所製)で、実施例記載の脂質粒子溶液を測定した。
<粘度測定>
VISOCOMETER BMII型(東機産業株式会社製)で、実施例記載の脂質粒子溶液を、ローターNo.3を用いて回転数6rpm、25℃条件下にて測定した。
<相転移温度測定>
DSC3500(ネッチ社製)で、実施例記載の脂質粒子溶液を、アルミパンに数mgを秤量して測定した。-10℃から90℃まで、昇温速度2℃/分で加熱し、吸熱ピークが確認された温度を脂質粒子の相転移温度とする。また、前記測定条件により相転移温度が確認できない場合は、25℃から-10℃まで、降温速度10℃/分で冷却し、発熱ピークが確認された温度を脂質粒子の相転移温度とする。
<平均粒子径、多分散度、粗大粒子の含有率測定>
FPAR-1000(大塚電子株式会社製)を用いて、動的光散乱法にて、実施例記載の化粧料用組成物(脂質粒子溶液)を純水で100倍に希釈したもの、および実施例の配合組成物(化粧水、処方配合物)を純水にて100倍に希釈したものを25℃恒温槽で30分保温した後、25℃条件下で測定した。なお本開示における平均粒子径は、動的光散乱法にて、アインシュタイン・ストークスの式から得られた平均粒子径を意味する。また本開示における多分散度は、キュムラント法解析から得られる。
<ゼータ電位測定>
ゼータサイザーナノZSP(マルバーン社製)で実施例記載の脂質粒子溶液を純水にて100倍に希釈したものを25℃恒温槽で30分保温した後、25℃条件下にて測定した。
<安定性試験>
実施例記載の化粧料用組成物(脂質粒子溶液)及び配合組成物(化粧水、処方配合物)を30mLガラス製容器に充填して、4℃、25℃、40℃、又は50℃で、0.25ヶ月、1ヶ月、3ヶ月又は6ヶ月間保存し、保存後の外観、pH、平均粒子径と多分散度を測定した。
<電子顕微鏡観察>
透過型電子顕微鏡H-7600(株式会社日立製作所製)、走査型電子顕微鏡S-4800(株式会社日立製作所製)を用いた。電子顕微鏡観察の前処理法は氷包埋法、ネガティブ染色法、又はフリーズフラクチャー法などを用いることができる。また、日立ハイテク製K-kitなどの観察用キットを使用することもできる。本実施例ではサンプルの前処理はVITROBOT(サーモフィッシャーサイエンティフィック株式会社製)を用いた氷包埋法、又はネガティブ染色法で行った。
<使用感評価>
専門評価パネル8名による使用感試験を行った。脂質粒子溶液、又は配合組成物を適量(約20μl)手の甲に塗布し、塗布最中のなめらかさ、肌なじみ、コク感、清涼感、べたつき、塗布後の保湿の持続性、ハリ感の持続性のうち1項目以上について判定した。使用感評価における各項目の評価及び判定基準は、以下に記載した通りである。
[評価]
5点:非常に良好
4点:良好
3点:普通
2点:やや不良
1点:不良
[判定]
〇:平均点4.0以上
△:平均点3.0以上4.0未満
×:平均点3.0未満
各種判定結果は以下のような特徴的感触であった。
<<なめらかさ>>
〇の場合、塗布した溶液を広げる際に、なめらかに広がり、ムラがなく、引っ掛かりがなく伸びがよかった。×の場合、引っ掛りやつっぱりを感じた。
<<肌なじみ>>
〇の場合、塗布した溶液が肌に吸い付くような感覚があった。×の場合、肌に吸い付くような感覚がなかった。
<<コク感>>
〇の場合、脂質粒子独特のコク感があった。×の場合、脂質粒子独特のコク感がなかった。
<<べたつき>>
〇の場合、塗布した際にべたつく感覚がなかった。×の場合、べたつく感覚があった。
<<保湿の持続性>>
〇の場合、塗布した後、2時間経過した後の肌に保湿感があった。×の場合、保湿感が残っていなかった。
<<ハリ感の持続性>>
〇の場合、塗布した後、2時間経過した後の肌が、肌の内側から押し返すような柔軟な弾力を感じた。×の場合、柔軟な弾力を感じなかった。
また、清涼感の判定基準は以下に記載した通りである。
<<清涼感>>
塗布した際に清涼感がある場合を「ある」とし、清涼感がない場合を「ない」とした。
<蛍光強度測定>
マルチグレーディングマイクロプレートリーダSH-9000Lab(コロナ電気株式会社製)を用いて、温度30℃下、適量のサンプルをフルオロヌンクプレート96ウェル上で励起光490nm、蛍光530nmで測定した。後述の製造例9のように蛍光色素内包脂質粒子溶液に含まれる蛍光色素量を算出する際は、ポリオキシエチレン(10)オクチルフェニルエーテル(富士フイルム和光純薬株式会社製、以下TritonX-100と省略)と混合し、溶出した蛍光色素の蛍光強度を測定した。
<カフェインの定量>
液体クロマトグラフィー(株式会社島津製作所製)とカラム(CAPCELLPAKC18 SG120、4.6mmI.D.×250mm、株式会社大阪ソーダ製)を用いて分析した。予め既知濃度のカフェイン溶液を展開液を用いて調製し、検量線を作成した。
UV:254nm
展開液:水:メタノール:酢酸=39:60:1(vol/vol)
カラム温度:45℃
打込み量:5μL
流速:0.8ml/分
<化粧料用組成物(脂質粒子溶液)に含まれる成分の定量測定1>
液体クロマトグラフィー(株式会社島津製作所製)とカラム(CAPCELLPAKC18 SG120、4.6mmI.D.×250mm、株式会社大阪ソーダ製)を用いて分析した。予め化粧料用組成物に含まれる成分が既知濃度のクロロホルム溶液を用いて、検量線を作成した。
ELSD:350~360kPa、40℃、GAIN6
UV:254nm
展開液:メタノール100vol%
カラム温度:45℃
打込み量:5μL
流速:0.75mL/分
未知濃度の化粧料用組成物をメタノールで40倍希釈し、50℃で5分加温した後、メンブレンフィルターでろ取し、ろ液溶液を測定した。代表的な成分のELSDの保持時間は、リン脂質が12.5~13.5分と15.5~17.0分であり、リゾリン脂質が4.0~6.5分であり、コレステロールが11.5~12.5分であり、セラミドNGが12.5~13.5分である。
<化粧料用組成物(脂質粒子溶液)に含まれる成分の定量測定2>
ガスクロマトグラフィー(株式会社島津製作所製GC2010PLUS)とカラム(アジレント J&W社製DB-WAX、内径0.25mm、長さ30m、膜厚0.25μm)を用いて分析した。予め化粧料用組成物に含まれる成分が既知濃度の1-ペンタノール溶液を調製し、検量線を作成した。内部標準はジメチルスルホキシドが1000ppmである。
注入量:1.0μL
気化室温度:250℃
注入モード:スプリット
全流量:38.9mL/分
カラム流量:1.16mL/分
パージ流量:3.0mL/分
スプリット比:30.0
キャリアガス:ヘリウム
カラム温度:80℃で10分保持、10℃/分で240℃まで昇温、5分保持する
検出器:FID
検出器温度:250℃
注入口:スプリット
注入口温度:250℃
未知濃度の化粧料用組成物をメタノールまたは1-ペンタノールで80倍希釈し、50℃で5分加温した後、メンブレンフィルターでろ取し、ろ液溶液を測定した。代表的な成分のFIDの保持時間は、エタノールが1.5~2.5分であり、1,3-ブタンジオールが18.0~19.0分であり、内部標準のジメチルスルホキシドが15.5~16.5分である。
<化粧料用組成物(脂質粒子溶液)に含まれる水の定量測定>
カールフィッシャ―水分測定装置(日東精工アナリテック社製 CA-310)を用いて、電量滴定法で測定した。予め超脱水メタノール(富士フイルム和光純薬社製)に含まれる水分量を測定した。
陽極液:アクアミクロンAX(三菱ケミカル社製)
陰極液:アクアミクロンCXU(三菱ケミカル社製)
未知濃度の化粧料用組成物を超脱水メタノールで300倍希釈し、50℃で5分加温した溶液を測定した。測定結果から予め測定した超脱水メタノールに含まれる水分量をバックグラウンドとして差し引いて、未知濃度の化粧料用組成物に含まれる水分量を算出した。
Phospholipon90H(リポイド社製)6部とSLP-PC70HS(辻製油株式会社製)4部を1,3-ブタンジオール(株式会社ダイセル製)7部に溶解した脂質溶液(溶液1)、水83部(溶液2)をWO2018/190423号公報の実施例1に記載の2流路を有する流路構造体にて混合し、脂質粒子溶液(本開示の化粧料用組成物1)を調製した。
表1に記載の配合(単位は部)に変更した以外は製造例1と同様に脂質粒子溶液(本開示の化粧料用組成物2~6)を調製した。
Phospholipon80H(リポイド社製)、SLP-PC92H(辻製油株式会社製)を使用した。
Phospholipon90H(リポイド社製)6部とSLP-PC70HS(辻製油株式会社製)4部をグリセリン(阪本薬品工業株式会社)30部に溶解した脂質溶液(溶液1)、水60部(溶液2)をWO2018/190423号公報の実施例1に記載の2流路を有する流路構造体にて混合し、脂質粒子溶液(比較化粧料用組成物7)を調製した。
Phospholipon90H(リポイド社製)4.8部とSLP-PC70HS(辻製油株式会社製)3.2部を1,3-ブタンジオール(株式会社ダイセル製)10.7部およびグリセリン(阪本薬品工業株式会社)21.3部に溶解した脂質溶液(溶液1)、水60部(溶液2)をWO2018/190423号公報の実施例1に記載の2流路を有する流路構造体にて混合し、脂質粒子溶液(比較化粧料用組成物8)を調製した。
製造例1~8で調製した脂質粒子溶液の組成(単位は部)を表1に示す。また、製造例1~8で調製した脂質粒子溶液に含まれる各種成分及び水の定量測定結果(単位は%)を表2に示す。
製造例1から製造例6の脂質粒子溶液について、使用感評価を行ったところ、べたつきの判定結果は〇であり、べたつきがないことを確認した。
製造例7及び8の使用感評価を行ったところ、べたつきの判定結果は×でべたつきがあり、またコク感の判定結果は△で脂質粒子独特のコク感は僅かにしか感じられなかった。
製造例1~製造例4で得られた脂質粒子溶液を表4に記載の処方で配合(単位は部)し、化粧水(本開示の配合組成物1~4)を調製した。
得られた配合組成物の物性と保存安定性を表5に示す。
ネガティブ染色法によって前処理し、製造例2の脂質粒子溶液中の脂質粒子を透過型電子顕微鏡で観察した。得られた画像を図1に示す。
図1の結果から、製造例2における脂質粒子溶液に含まれる脂質粒子は、球状であることがわかった。また、複数の層構造を有していることがわかった。
Phospholipon90H(リポイド社製)6部とSLP-PC70HS(辻製油株式会社製)4部を1,3-ブタンジオール(株式会社ダイセル製)7部に溶解した脂質溶液(溶液1)、5(6)-カルボキシフルオレセイン(SIGMA ALDRICH社製、以下蛍光色素と略す。)を0.1Mとなるように溶解した水溶液83部(溶液2)をWO2018/190423号公報の実施例1に記載の2流路を有する流路構造体にて混合し、蛍光色素内包脂質粒子溶液(本開示の化粧料用組成物9)を調製した。得られた蛍光色素内包脂質粒子溶液をゲルろ過し、脂質粒子に内包されない外水層の蛍光色素を除いた。ろ材ゲルは、Sephadex G-50(サイティバ社製)、溶離液は20mMトリスヒドロキシメチルアミノメタン塩酸塩水溶液に0.1Mの塩化ナトリウムが溶解したpH7.5の溶液(以下、Tris緩衝溶液)を用いた。得られた蛍光色素内包脂質粒子溶液の物性は平均粒子径324nm、多分散度0.243であった。蛍光色素濃度は7.1×10-4Mであった。
製造例9で調製した蛍光色素内包脂質粒子溶液及びTris緩衝溶液(pH7.5)をサンプル液として用いて皮膚透過性試験を実施した。三次元皮膚モデルはローマン工業社から販売されているLSE-high(ヒト皮膚全層モデル)を用いた。LSE-highのトランスウェル底面から三次元皮膚モデルを切り抜いた。図2に示すとおり、三次元皮膚モデル4を、真皮側をレシーバー液1側に向けて縦型フランツ拡散セル(ローマン工業社製)(図2中7で示す)(有効拡散面積:1.13cm2)で挟み、三次元皮膚モデル4の表皮層側にサンプル液5を塗布した。図2において、恒温循環水入口2及び恒温循環水出口3は、恒温槽に接続されており、恒温循環水入口2から恒温循環水出口3の方向へ、37℃の恒温水を流し、縦型フランツ拡散セル7の外周部に循環させた。なお各サンプル液の塗布容量は有効拡散面積1cm2あたり1mLとした。またレシーバー液としてはTris酸緩衝液(pH7.5)3.7mLを用いた。試験中、レシーバー液1は、レシーバー液1中に配置された攪拌子6をマグネチックスターラー8で回転させることにより攪拌した。皮膚透過性試験は室温25℃、湿度60%の実験室で実施した。各サンプル液を塗布して30分後、120分後、240分後、360分後にレシーバー液1を0.25mLサンプリングした。各サンプリング終了後、新しいTris緩衝液(pH7.5)0.25mLを各レシーバー相に添加した。サンプル液塗布120分後、240分後、360分後に一部の三次元皮膚モデル4を縦型フランツ拡散セル7から取り外し、「細胞・組織染色の達人(羊土社)2018年」に記載の方法に従って、凍結ブロックを作製した。作製した凍結ブロックを用いてクリオスターNX70(Thermo scientific社製)を使用して、試料台の温度-80℃、ナイフの温度-21℃、切片の厚さ7μmで凍結切片を作製した。蛍光顕微鏡(ECLIPSE Ti2;ニコンソリューションズ社製)を用いて各凍結切片の蛍光観察を実施した。
図3で示すように、蛍光色素内包脂質粒子溶液をサンプル液として用いた皮膚透過性試験では、表皮および真皮において蛍光を確認した。一方、図4で示すように、Tris緩衝液をサンプル液として用いた試験では、表皮および真皮ともに蛍光は観察されなかった。
図3、図4の結果より、蛍光色素内包脂質粒子溶液試験区では蛍光色素を内包した脂質粒子溶液が三次元皮膚モデルの表皮および真皮に浸透したと考えられる。
上記蛍光色素内包脂質粒子溶液をサンプル液として用いた皮膚透過性試験において、各サンプリング時間に取得したレシーバー液1は、TritonX-100の処理を行った後、蛍光強度測定した。結果を図5に示す。
図5に示すように、蛍光色素内包脂質粒子溶液試験区のレシーバー液中で蛍光が観察されたことから、脂質粒子に内包された蛍光色素が三次元皮膚モデルの表皮および真皮に浸透し、かつ真皮の下のレシーバー液まで透過したことがわかった。
製造例9で調製した蛍光色素内包脂質粒子溶液及びTris緩衝液(pH7.5)をサンプル液として用いて皮膚バリア性評価試験を実施した。三次元皮膚モデルはローマン工業社から販売されているLSE-high(ヒト皮膚全層モデル)を用いた。LSE-highのトランスウェル底面から三次元皮膚モデルを切り抜いた。図2に示すとおり、三次元皮膚モデル4を、真皮側をレシーバー液1側に向けて縦型フランツ拡散セル(ローマン工業社製)(図2中7で示す)(有効拡散面積:1.13cm2)で挟み、三次元皮膚モデル4の表皮層側にサンプル液5を塗布した。図2において、恒温循環水入口2及び恒温循環水出口3は、恒温槽に接続されており、恒温循環水入口2から恒温循環水出口3の方向へ、37℃の恒温水を流し、縦型フランツ拡散セル7の外周部に循環させた。なお各サンプル液の塗布容量は有効拡散面積1cm2あたり1mLとした。またレシーバー液としてはTris緩衝液(pH7.5)3.7mLを用いた。試験中、レシーバー液1は、レシーバー液1中に配置された攪拌子6をマグネチックスターラー8で回転させることにより攪拌した。皮膚バリア性評価試験は室温25℃、湿度60%の実験室で実施した。各サンプル液を塗布して120分後、塗布したサンプル液を除き、カフェイン(富士フイルム和光純薬株式会社製)10mg/mlのTris緩衝溶液(pH7.5)を塗布した。カフェイン溶液塗布30分後、60分後、120分後にレシーバー液1を0.25mLサンプリングした。各サンプリング終了後、新しいTris緩衝液(pH7.5)0.25mLを各レシーバー相に添加した。
各サンプリング時間で取得したレシーバー液1はTris-HCl溶液で3~10倍に希釈し、溶液中のカフェイン量を液体クロマトグラフィーで定量した。結果を図6に示す。蛍光色素内包脂質粒子溶液試験区のレシーバー液1中のカフェインの累積透過量は、Tris緩衝液試験区のレシーバー液1中のカフェインの累積透過量に比べ少ないことが分かった。予め脂質粒子溶液を塗布することで、三次元皮膚モデルのバリア性が向上し、後に塗布したカフェインの透過量が低減されたと考えられる。
Phospholipon90H(リポイド社製)7.2部と、コレステロールNF-PW-(JP)(クローダジャパン株式会社製)1.5部、SLP-LPC70H(辻製油株式会社製)1.2部、Ceramide TIC-001(高砂香料工業株式会社製)3.0部を1,3-ブタンジオール(株式会社ダイセル製)43.2部、エタノール(日本アルコール工業株式会社製)43.2部に溶解した脂質溶液(溶液1)、水496.5部(溶液2)を、マイクロミキサーであるバッフルミキサー型流路構造体にて混合し、脂質粒子溶液(本開示の化粧料用組成物10)を調製した。
表6に記載の原料を用いて、表7、表8に記載の配合(単位は部)に変更した以外は製造例10と同様に脂質粒子溶液(本開示の化粧料用組成物11~18、比較化粧料用組成物19~26)を調製した。また、製造例10~26で調製した脂質粒子溶液に含まれる各種成分及び水の定量測定結果(単位は%)を表9、表10に示す。
製造例10~26より得られた脂質粒子溶液について各種評価を行った。結果を表11、表12に記載する。なお、得られた調製直後の脂質粒子溶液は、いずれも均一で沈降などはみられなかった。
製造例10、又は製造例14で得られた脂質粒子溶液を配合した処方配合物(配合組成物5~7)、及び脂質粒子溶液を含まない処方で配合した処方配合物(配合組成物8、9)を、表6に記載の原料を用いて表13に記載の組成(単位は部)で調製した。調製直後は、いずれの配合組成物も析出や沈殿はなく均一な配合物となっており、保存安定性や使用感評価を行うに値する状態であった。
得られた配合組成物5~7について各種評価を行った。結果を表14に記載する。
表14の結果から、本発明における脂質粒子溶液を含む配合組成物5~7は低温および高温での長期の安定性に優れることが分かった。また、配合組成物7の結果から水溶性高分子を含まない組成においても保存安定性に優れることがわかった。
氷包埋法によって前処理し、製造例10の脂質粒子を透過型電子顕微鏡で観察した。得られた画像を図7に示す。
図7の結果から、製造例10における脂質粒子溶液に含まれる脂質粒子は、球状であることがわかった。
製造例2で取得した脂質粒子溶液10mLに添加剤(保存安定性向上剤)を各種濃度で添加し、pHを調整し、ガラス製容器に入れて、4℃、25℃、又は50℃加熱条件下で1ヶ月間保存した際の平均粒子径及びpHの変化を確認した結果を表16に示す。
また、製造例27~29で調製した脂質粒子溶液について使用感評価を行ったところ、べたつきの判定結果は〇であり、べたつきがないことを確認した。加えて、なめらかさ、肌なじみ及びコク感を評価したところ、すべて判定結果は〇であった。
表17に記載の原料を用いて、表17に記載の配合(単位は部)に変更した以外は製造例10と同様に脂質粒子溶液(本開示の化粧料用組成物30)を調製した。
製造例30で調製した脂質粒子溶液をサンプル液として用いて皮膚バリア性評価試験を実施した。三次元皮膚モデルは株式会社ニコダームリサーチ(以下、ニコダーム社)から販売されているT-Skin(再生ヒト皮膚全層モデル)を用いた。T-Skinのトランスウェル底面から三次元皮膚モデルを切り抜いた。図2に示すとおり、三次元皮膚モデル4を、真皮側をレシーバー液1側に向けて縦型フランツ拡散セル7(有効拡散面積:1.13cm2)で挟み、三次元皮膚モデル4の表皮層側にサンプル液5を塗布した。図2において、恒温循環水入口2及び恒温循環水出口3は、恒温槽に接続されており、恒温循環水入口2から恒温循環水出口3の方向へ、37℃の恒温水を流し、縦型フランツ拡散セル7の外周部に循環させた。なおサンプル液の塗布容量は有効拡散面積1cm2あたり1mLとした。またレシーバー液としてはTris緩衝溶液(pH7.5)3.7mLを用いた。試験中、レシーバー液1は、レシーバー液1中に配置された攪拌子6をマグネチックスターラー8で回転させることにより攪拌した。皮膚バリア性評価試験は室温25℃、湿度60%の実験室で実施した。サンプル液を塗布して120分後、塗布したサンプル液を除き、カフェイン(富士フイルム和光純薬株式会社製)10mg/mlのTris緩衝溶液(pH7.5)を塗布した。カフェイン溶液塗布60分後にレシーバー液1を0.25mLサンプリングした。
取得したレシーバー液1はTris緩衝溶液で3~10倍に希釈し、溶液中のカフェイン量を液体クロマトグラフィーで定量した。結果を図8に示す。
Claims (5)
- リン脂質を少なくとも含む脂質粒子、多価アルコール及び水を含み、多価アルコールのうち、多価アルコール100質量%に対して、3価以上のアルコールが0~20質量%であることを特徴とする、化粧料用組成物又は化粧料用医薬部外品。
- 前記脂質粒子の平均粒子径が10nm以上である、請求項1に記載の化粧料用組成物又は化粧料用医薬部外品。
- 前記脂質粒子の表面のゼータ電位の絶対値が5mV以上である、請求項1又は2に記載の化粧料用組成物又は化粧料用医薬部外品。
- 25℃で1か月保存後の脂質粒子の平均粒子径の変化率が±20%以下である、請求項1~3のいずれかに記載の化粧料用組成物又は化粧料用医薬部外品。
- マイクロフローデバイスを用いて製造される、請求項1~4のいずれかに記載の化粧料用組成物又は化粧料用医薬部外品。
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CN107802508A (zh) * | 2017-11-01 | 2018-03-16 | 武汉百思凯瑞纳米科技有限公司 | 一种阳离子脂质体纳米组合物及其制备方法和应用 |
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