WO2015079942A1 - 水系スキンケア剤 - Google Patents
水系スキンケア剤 Download PDFInfo
- Publication number
- WO2015079942A1 WO2015079942A1 PCT/JP2014/080308 JP2014080308W WO2015079942A1 WO 2015079942 A1 WO2015079942 A1 WO 2015079942A1 JP 2014080308 W JP2014080308 W JP 2014080308W WO 2015079942 A1 WO2015079942 A1 WO 2015079942A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- skin care
- care agent
- skin
- magnetic powder
- water
- Prior art date
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 179
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000002245 particle Substances 0.000 claims abstract description 112
- 239000006247 magnetic powder Substances 0.000 claims abstract description 91
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 20
- 238000009826 distribution Methods 0.000 claims abstract description 19
- 239000002562 thickening agent Substances 0.000 claims abstract description 19
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000011187 glycerol Nutrition 0.000 claims abstract description 9
- 238000000790 scattering method Methods 0.000 claims abstract description 8
- 230000005291 magnetic effect Effects 0.000 claims description 39
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 25
- 239000000843 powder Substances 0.000 claims description 23
- 239000000126 substance Substances 0.000 claims description 16
- 230000005415 magnetization Effects 0.000 claims description 14
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 12
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 9
- 230000001747 exhibiting effect Effects 0.000 claims description 8
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- 239000002537 cosmetic Substances 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 12
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- -1 alkyl sulfate ester salt Chemical class 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 description 4
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- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 2
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- 230000001186 cumulative effect Effects 0.000 description 2
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- PPASLZSBLFJQEF-RXSVEWSESA-M sodium-L-ascorbate Chemical compound [Na+].OC[C@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RXSVEWSESA-M 0.000 description 2
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- 229920000742 Cotton Polymers 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
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- 229920002472 Starch Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 125000004442 acylamino group Chemical group 0.000 description 1
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- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229960000271 arbutin Drugs 0.000 description 1
- 229940072107 ascorbate Drugs 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
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- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
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- 235000014113 dietary fatty acids Nutrition 0.000 description 1
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- 125000003976 glyceryl group Chemical group [H]C([*])([H])C(O[H])([H])C(O[H])([H])[H] 0.000 description 1
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- 230000001771 impaired effect Effects 0.000 description 1
- BEJNERDRQOWKJM-UHFFFAOYSA-N kojic acid Chemical compound OCC1=CC(=O)C(O)=CO1 BEJNERDRQOWKJM-UHFFFAOYSA-N 0.000 description 1
- 229960004705 kojic acid Drugs 0.000 description 1
- WZNJWVWKTVETCG-UHFFFAOYSA-N kojic acid Natural products OC(=O)C(N)CN1C=CC(=O)C(O)=C1 WZNJWVWKTVETCG-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
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- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
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- BJRNKVDFDLYUGJ-UHFFFAOYSA-N p-hydroxyphenyl beta-D-alloside Natural products OC1C(O)C(O)C(CO)OC1OC1=CC=C(O)C=C1 BJRNKVDFDLYUGJ-UHFFFAOYSA-N 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229940066842 petrolatum Drugs 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229940097941 polyglyceryl-10 laurate Drugs 0.000 description 1
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- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
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- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
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- 238000009210 therapy by ultrasound Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 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
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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
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
-
- 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
- A61K8/0241—Containing particulates characterized by their shape and/or structure
-
- 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
-
- 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
- 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
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/10—Washing or bathing preparations
-
- 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
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
-
- 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
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/47—Magnetic materials; Paramagnetic compounds
-
- 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
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/48—Thickener, Thickening system
Definitions
- the present invention relates to an aqueous skin care agent.
- Some skin care agents used for skin beauty remove skin stains and waste products together with skin care agents by removing them after a while after being applied to the skin.
- a method of removing such a skin care agent from the skin a method of wiping with cotton or the like, or washing off with warm water or the like is common.
- a method for removing a used skin care agent more easily than these general methods has been desired.
- Patent Document 1 proposes a skin cleansing cream in which powder composed of magnetized particles or particles that can be magnetized is contained in an excipient serving as a coating base agent.
- This skin cleaning cream is used, for example, as follows. That is, after applying the skin cleaning cream to the skin, a magnet or the like is brought close to the skin cleaning cream on the skin surface. Thereby, magnetic force acts on the powder contained in the skin cleaning cream, and the powder is attracted by the magnetic force. Along with the powder, used skin-cleaning cream and skin dirt adhering to the powder are adsorbed and removed from the skin surface. In this way, the skin cleaning cream is easily removed from the skin surface.
- the skin cleaning cream described in Patent Document 1 uses an excipient mainly composed of an oil component such as petrolatum. Therefore, after the skin cleaning cream is adsorbed and removed from the skin by magnetic force, at least a part of the oil component remains on the surface of the skin to form an oil film. And the oil film formed on the skin surface inhibits the penetration of the cosmetic ingredients contained in the skin lotion into the skin, and becomes a factor that reduces the cosmetic effect. Therefore, it is necessary for the user to perform separate face washing or the like in order to remove the oil film, and there is a problem that the user feels troublesome.
- an oil component such as petrolatum
- the present invention has been made in view of the above background, and intends to provide an aqueous skin care agent having excellent performance.
- One embodiment of the present invention comprises 4 to 85% by mass of water, 13-80 mass% magnetic powder, Containing a thickener,
- the magnetic powder is an aqueous skin care agent characterized in that it contains ferrite exhibiting ferromagnetism as a main component and has a volume average particle size of 20 to 100 ⁇ m determined from a particle size distribution obtained by a laser diffraction scattering method.
- the aqueous skin care agent contains the specific content of water, the specific content of magnetic powder, and a thickener. And the said magnetic body powder has the ferrite which shows a ferromagnetism as a main component, and has the volume average particle diameter of the said specific range. Therefore, the magnetic skin powder is dispersed in the water-based skin care agent, and presents a paste suitable for application to the skin.
- a magnet or the like close to the aqueous skin care agent applied to the skin, a magnetic force acts on the magnetic powder, and the used aqueous skin care agent containing the magnetic powder is adsorbed from the skin surface along with the skin dirt. Can be removed.
- the magnetic powder is mainly composed of ferrite, which is an iron oxide, there is little variation in magnetic properties and color tone. Therefore, the water-based skin care agent can reduce variations in easiness of adsorption removal and color tone. In addition, the magnetic powder is less susceptible to further oxidation in the aqueous skin care agent. Therefore, the aqueous skin care agent does not easily change the magnetic properties of the magnetic powder even when stored for a long period of time, and the performance hardly deteriorates.
- the aqueous skin care agent is aqueous, it hardly forms an oil film on the skin surface after the used aqueous skin care agent is adsorbed and removed. Therefore, the user can use the skin lotion as it is after adsorbing and removing the water-based skin care agent from the skin surface, and it is not necessary to separately wash the face before using the skin lotion. As a result, the water-based skin care agent makes the work for obtaining a beauty effect simple and easy for the user to handle.
- the above-mentioned aqueous skin care agent can adsorb and remove skin stains and the like, has excellent storage stability, and can easily perform operations for obtaining a cosmetic effect.
- the skin care agent has excellent performance.
- the above-mentioned water-based skin care agent is less likely to form an oil film on the skin surface as the content of components that do not dissolve in water decreases, and tends to have excellent performance. Therefore, the water-based skin care agent is composed of 50% by mass or more of water and water-soluble components when the total amount of components other than the magnetic powder is 100% by mass. Further, from the viewpoint of suppressing the formation of an oil film on the skin surface, the content of water and water-soluble components is preferably 60% by mass or more, and more preferably 70% by mass or more.
- Water content is 4 to 85% by mass with respect to the entire aqueous skin care agent.
- the aqueous skin care agent becomes a smooth paste in which magnetic powder is dispersed. Therefore, the aqueous skin care agent is easy to spread when applied to the skin and exhibits a smooth touch.
- the water content is 4% by mass or more.
- the water content is preferably 5% by mass or more, and more preferably 6% by mass or more.
- the water content exceeds 85% by mass, it is difficult to obtain the effect of increasing the viscosity by the thickener, and the viscosity of the aqueous skin care agent becomes excessively low. Therefore, in this case, the magnetic powder settles down due to gravity, and the amount of the magnetic powder contained in the aqueous skin care agent applied to the skin surface becomes insufficient. And, when the amount of the magnetic powder becomes insufficient, the magnetic force acting on the entire magnetic powder when the magnet or the like is brought close becomes insufficient, and as a result, the used aqueous skin care agent is adsorbed and removed from the skin surface. It becomes difficult.
- the low viscosity causes problems such as the water-based skin care agent dripping from the skin surface, and it is difficult to apply the water-based skin care agent to the skin. Therefore, in order to obtain an aqueous skin care agent having a moderately large viscosity, the water content is set to 85% by mass or less. From the same viewpoint, the water content is preferably 73% by mass or less, more preferably 30% by mass or less, and further preferably 15% by mass or less.
- the content of the magnetic powder is 13 to 80% by mass with respect to the entire aqueous skin care agent.
- the content of the magnetic powder is in the specific range, the magnetic force acting on the entire magnetic powder increases when a magnet or the like is brought close to the aqueous skin care agent. Therefore, the used aqueous skin care agent can be easily removed from the skin surface together with the dirt on the skin.
- the content of the magnetic powder is set to 13% by mass or more.
- the content of the magnetic powder is preferably 15% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more.
- the content of the magnetic powder is set to 80% by mass or less.
- the content of the magnetic powder is preferably 75% by mass or less, and more preferably 70% by mass or less.
- the magnetic powder is mainly composed of ferrite exhibiting ferromagnetism.
- main component Indicates that the compound has the highest content. That is, the magnetic powder usually contains iron-based oxides having different degrees of oxidation, such as wustite and hematite, inevitable impurities, etc., in addition to ferrite exhibiting ferromagnetism as a main component.
- Ferrite exhibiting ferromagnetism includes spinel ferrite, magnetoplumbite ferrite, garnet ferrite, and perovskite ferrite.
- the magnetic powder is preferably composed mainly of soft ferrite having high saturation magnetization and low residual magnetization and coercive force.
- the spinel ferrites it is more preferable to use a ferrite having high saturation magnetization.
- the magnetic powder used for the aqueous skin care agent has fewer kinds of elements constituting the ferrite as a main component. Therefore, it is more preferable that the magnetic powder contains, as a main component, magnetite (Fe 3 O 4 ) having high saturation magnetization and composed of two kinds of elements of Fe and O.
- the volume average particle diameter of the magnetic powder is 20 to 100 ⁇ m.
- the aqueous skin care agent can be easily adsorbed and removed from the skin surface by a magnetic force.
- the volume average particle diameter of the magnetic powder can be calculated as the cumulative 50% particle diameter (median diameter) obtained by the volume distribution mode and display under the sieve in the particle size distribution obtained by the laser diffraction scattering method.
- the particle size distribution of the magnetic powder tends to be a distribution in which the content of particles having an excessively small particle size is large.
- the magnetic force acting on individual particles becomes weaker as the particle size is smaller. Therefore, particles having an excessively small particle size are not easily attracted to a magnet or the like and are likely to remain on the skin surface. In this case, since the magnetic force acting on the entire magnetic powder is weakened, the used aqueous skin care agent tends to remain on the skin surface.
- the aqueous skin care agent tends to be reddish when mixed with the aqueous skin care agent. Although this mechanism is not clear at the present time, it is considered that hematite reddish brown greatly affects the color tone of the water-based skin care agent due to the increase of particles having an excessively small particle size.
- the volume average particle size exceeds 100 ⁇ m
- the particle size distribution has a large content of particles having an excessively large particle size. Therefore, in this case, the feeling of use may be deteriorated, for example, the touch of the aqueous skin care agent mixed with the magnetic powder may be deteriorated.
- the water-based skin care agent in which the volume average particle diameter of the magnetic powder is controlled within the above specific range is such that the fine particles contained in the magnetic powder and the used water-based skin care agent are unlikely to remain on the skin surface. And it has an excellent feeling of use.
- the volume average particle size of the magnetic powder is preferably 50 to 75 ⁇ m.
- the thickener has an action of increasing the viscosity of the aqueous skin care agent and imparting an appropriate viscosity to the aqueous skin care agent. Therefore, an aqueous skin care agent containing a thickening agent tends to disperse the magnetic powder and tends to exhibit a paste suitable for application to the skin. Moreover, the thickener has the effect
- the viscosity of the water-based skin care agent does not increase, and sedimentation of magnetic powder due to gravity and the water-based skin care agent hang down from the skin surface due to low viscosity. Problems arise. Therefore, it is difficult to apply an aqueous skin care agent to the skin.
- thickeners examples include glycerin, (acrylates / alkyl acrylate (C10-30)) crosspolymer, cellulose derivatives, xanthan gum, guar gum, starch and derivatives thereof, alginates and derivatives thereof, agar, sodium polyacrylate, Conventionally known thickeners for cosmetics such as carboxyvinyl polymer and bentonite can be used. These thickeners may be used independently and may use multiple types together.
- the viscosity of the aqueous skin care agent is preferably 9000 mPa ⁇ s or more.
- the amount of magnetic powder contained in the aqueous skin care agent applied to the skin surface is sufficiently increased, and the magnetic force acting on the entire magnetic powder becomes sufficiently large when the aqueous skin care agent is adsorbed and removed by magnetic force. .
- the magnetic powder and the used aqueous skin care agent can be more easily adsorbed and removed from the skin surface, and the used aqueous skin care agent and fine particles in the magnetic powder remain more on the skin surface. Hateful.
- the aqueous skin care agent preferably contains 10 to 45% by mass of glycerin as a thickener with respect to the entire aqueous skin care agent.
- glycerin as a thickener with respect to the entire aqueous skin care agent.
- the adhesive force acting between the particles of the magnetic powder becomes larger, and the film-like structure when the used aqueous skin care agent is peeled off from the skin is more likely to be connected.
- the water-based skin care agent is more easily removed from the skin surface, and the used water-based skin care agent or the like is less likely to remain on the skin surface.
- glycerin since glycerin has an excellent moisturizing effect, it can effectively moisturize the skin after adsorbing and removing the aqueous skin care agent.
- the aqueous skin care agent may contain a thixotropic agent that imparts thixotropic properties.
- the aqueous skin care agent imparted with thixotropy has a high viscosity in a state where the aqueous skin care agent does not flow, such as during storage.
- the viscosity of the water-based skin care agent decreases. Therefore, a water-based skin care agent containing a thixotropic agent has a high viscosity during storage, so that the magnetic powder does not easily settle, and when applied to the skin, it tends to have a viscosity suitable for application.
- the aqueous skin care agent is suitable for application to the skin while suppressing sedimentation of the magnetic powder.
- thixotropic agent conventionally known thixotropic agents for cosmetics such as bentonite, 12-hydroxystearic acid, crystalline cellulose and the like are used.
- the water-based skin care agent may contain a surfactant.
- the surfactant has an action of dispersing the magnetic powder in the aqueous skin care agent. Therefore, the water-based skin care agent containing a surfactant is more likely to disperse the magnetic powder and present a smooth paste.
- surfactant examples include coconut oil fatty acid PEG-7 glyceryl, polyglyceryl-10 laurate, alkyl sulfate ester salt, acylamino acid salt, polyoxyethylene alkyl ether sulfate, alkyl ether phosphate ester salt, alkyl polyethylene glycol ether
- Conventionally known surfactants for cosmetics such as glycerin polypropylene glycol ether, alkyl polyglycerin ether, and ethylene oxide / propylene oxide block copolymer can be used. These surfactants may be used alone or in combination of two or more.
- the particles constituting the magnetic powder preferably have a resin film on the surface.
- a substance that can act as an oxidizing agent such as water. Therefore, the magnetic powder becomes less susceptible to further oxidation in the aqueous skin care agent. Therefore, the water-based skin care agent can further reduce variations in ease of adsorption and color tone.
- an aqueous skin care agent can be preserve
- the resin constituting the resin film examples include acrylate copolymers, polyvinyl alcohol, polyvinyl pyrrolidone, methoxyethylene maleic anhydride copolymer, cationized cellulose, polyacrylic acid ester copolymer, and methacrylic acid ester copolymer. Resin can be used. Moreover, you may mix
- the magnetic powder has a volume average particle size determined from a particle size distribution obtained by a laser diffraction scattering method of 50 to 75 ⁇ m, and the content of particles having a particle size of less than 37 ⁇ m is 15% by mass or less. And it is preferable that content of the particle
- the content of particles having a particle size of less than 37 ⁇ m can be measured, for example, as the amount of particles that can pass through a standard sieve having a nominal size of 37 ⁇ m (400 mesh). .
- the content of particles having a particle size of 105 ⁇ m or more is measured, for example, as the amount of particles that cannot pass through a standard sieve having a nominal size of 105 ⁇ m (145 mesh). be able to.
- the particle size distribution of the magnetic powder is the content and particle size of particles having an excessively small particle size. It is preferable to exhibit a distribution in which both the contents of excessively large particles are small. Therefore, the volume average particle size of the magnetic powder is more preferably 50 to 75 ⁇ m.
- the magnetic substance powder which has the particle size distribution finely controlled as mentioned above has an optimal characteristic as a magnetic substance powder mix
- the magnetic substance powder has a chemical component composed of 80% by mass or more of magnetite and the balance composed of wustite, hematite and inevitable impurities.
- the ratio of the diamagnetic substance in the magnetic powder decreases, the magnetic force acting on the entire magnetic powder becomes stronger. As a result, adsorption removal of the aqueous skin care agent can be performed more efficiently.
- wustite has a lower degree of oxidation than magnetite or the like, the magnetic powder is less susceptible to further oxidation by reducing the content of wustite. As a result, the performance of the aqueous skin care agent can be stabilized for a longer period of time.
- the magnetic powder preferably has a saturation magnetization of 80 Am 2 / kg or more.
- the magnetization of the magnetic powder can be sufficiently increased, and the magnetic force acting on the entire magnetic powder can be further increased.
- the aqueous skin care agent can be more easily adsorbed and removed from the skin surface.
- the water-based skin care agent may further contain a cosmetic component that imparts a cosmetic effect to the skin, in addition to the components described above.
- the aqueous skin care agent hardly forms an oil film on the skin surface after adsorbing and removing the used aqueous skin care agent. Therefore, the skin surface after adsorbing and removing the water-based skin care agent is in a state in which there are few substances that inhibit the penetration of cosmetic components such as dirt on the skin, waste products, or oil films, and the cosmetic components are likely to penetrate.
- blended with the aqueous skin care agent will be in the state apply
- Examples of beauty ingredients include whitening ingredients such as ascorbic acid derivatives, kojic acid, arbutin and tranexamic acid, nutritional ingredients such as amino acids, vitamins, plant extracts and microbial fermentation products, and moisturizing ingredients.
- the aqueous skin care agent preferably contains a charged iontophoretic component.
- the iontophoretic component in the water-based skin care agent is present in an ionized state. And after carrying out the adsorption removal of the water-system skin care agent from the skin surface, a weak electric current can be sent through skin. Thereby, the charged iontophoretic component can be moved toward the inside of the skin, and the penetration of the beauty component into the skin can be promoted. As a result, it is easier to improve the beauty effects that can be experienced. In addition, it is impossible for a skin care agent having an oily component as a main component to flow an electric current through the skin after the skin care agent is adsorbed and removed.
- the aqueous skin care agent contains glycerin together with the iontophoretic component.
- glycerin has an excellent moisturizing effect. Therefore, by using the aqueous skin care agent having the above-described configuration, more moisture can be retained on the skin surface after the aqueous skin care agent is adsorbed and removed as compared with the aqueous skin care agent not containing glycerin. As a result, a weak current for allowing the iontophoretic component to penetrate into the skin can be easily flowed, and iontophoresis can be easily performed.
- the water-based skin care agent preferably has a conductivity at 25 ° C. of 20 ⁇ S / cm or more. In this case, since a weak current for allowing the iontophoretic component to penetrate into the skin is likely to flow, iontophoresis can be easily performed.
- the water-based skin care agent may further contain additives usually used in cosmetics in addition to the above-described components.
- the additive include a lubricant, an antibacterial agent, a fragrance, and a pH adjuster. These additives can be appropriately added as long as the effects of the present invention are not impaired.
- the aqueous skin care agent of this example contains 4 to 85% by mass of water, 13 to 80% by mass of magnetic powder, and a thickener.
- the magnetic powder is composed mainly of ferrite exhibiting ferromagnetism and has a volume average particle size of 20 to 100 ⁇ m determined from the particle size distribution obtained by the laser diffraction scattering method.
- the water-based skin care agent 1 After the water-based skin care agent 1 is applied to the skin, as shown in FIG. 1, it is adsorbed and removed from the skin surface by bringing a remover 2 containing a magnet close thereto (reference numeral 10).
- the aqueous skin care agent 1 is configured such that the iontophoretic component 3 remains on the skin surface after it is adsorbed and removed by magnetic force.
- the water-based skin care agent 1 is applied not only to the face but also to parts other than the face such as hands, arms, and back. It is also possible to use it.
- test agents prepared by mixing the components at the ratios shown in Tables 1 and 3 were prepared. Further, as shown in Tables 1 and 3, four kinds of magnetite-based magnetic powder, bengara, black iron oxide for pigment, and iron powder were used as the magnetic powder. The production method and properties of each magnetic powder are as follows.
- the spherical granulated product whose particle size was adjusted was heated at 1320 ° C. for 3 hours to reduce the raw material hematite, and a fired product containing magnetite as a main component was obtained.
- the granulated product was heated in a nitrogen atmosphere using a tunnel electric furnace.
- a classification treatment was performed by using a combination of a gyro shifter and an air classifier to adjust the particle size distribution. Thereafter, magnetic separation was performed to select particles having a high magnetic susceptibility, thereby obtaining a magnetite-based magnetic powder.
- the magnetite magnetic powder obtained as described above was subjected to a surface treatment to form a resin film made of an acrylate copolymer on the surface of the particles constituting the magnetic powder.
- volume average particle diameter was calculated by the following method. First, a 0.2% sodium hexametaphosphate aqueous solution is added to magnetite-based magnetic powder, and then subjected to ultrasonic treatment for 1 minute using an ultrasonic homogenizer (UH-3C, manufactured by Ultrasonic Industry Co., Ltd.), thereby magnetite-based magnetism. A dispersion of body powder was prepared.
- UH-3C Ultrasonic Industry Co., Ltd.
- This dispersion was introduced into a Microtrac particle size analyzer (manufactured by Nikkiso Co., Ltd., Model 9320-X100) and measured under conditions of a refractive index of 1.81, a temperature of 25 ⁇ 5 ° C., and a humidity of 55 ⁇ 15%, and laser diffraction.
- the particle size distribution by the scattering method was obtained. From the obtained particle size distribution, the 50% cumulative particle size in the volume distribution mode and under the sieve display was calculated, and this was defined as the volume average particle size (median diameter).
- the volume average particle diameter of the magnetite-based magnetic powder was about 70 ⁇ m.
- the content of small-sized particles in the magnetite-based magnetic powder was 6.7% by mass, and the content of large-sized particles was 0% by mass.
- sample filling amount about 1 g
- sample filling cell inner diameter 7 mm ⁇ ⁇ 0.02 mm
- 4 ⁇ I coil 30 turns
- applied magnetic field 3000 oersted.
- the magnetite-based magnetic powder had a saturation magnetization of 82 Am 2 / kg, a residual magnetization of 82 Am 2 / kg, and a coercive force of 24 Oe.
- X'PertPRO MPD manufactured by Panalical Co., Ltd. was used as a measuring apparatus. Measurement was performed by continuous scanning at 0.2 ° / sec using a Co tube (CoK ⁇ ray) as an X-ray source and a concentrated optical system and a high-speed detector “X′Celarator” as an optical system. Analysis of the measurement results is performed in the same way as ordinary powder crystal structure analysis using the analysis software “X'PertHighScore”. After identifying the crystal structure, the obtained crystal structure is refined and converted to weight. The abundance ratio was calculated. In calculating the abundance ratio, the abundance ratios of magnetite, hematite, and wustite were calculated using Fe and O as essential elements.
- the X-ray source used for X-ray diffraction measurement can be measured without problems even with a Cu tube, but in the case of a sample containing a large amount of Fe, the background becomes larger than the peak to be measured, so the Co tube Is preferred.
- the optical system may obtain the same result even when the parallel method is used, but measurement with a concentrated optical system is preferable because the X-ray intensity is low and measurement takes time.
- the speed of the continuous scan is not particularly limited, but in order to obtain a sufficient S / N ratio when analyzing the crystal structure, the peak intensity of the (311) plane which is the main peak of magnetite is set to 50000 cps or more. The measurement was performed by setting the sample in the sample cell so that the particles were not oriented in a specific preferred direction.
- the magnetite-based magnetic substance powder has a chemical component composed of 89.7% by mass of magnetite, 4.1% by mass of hematite, and 6.2% by mass of wustite.
- ⁇ Bengara> A commercially available pigment grade Bengala ("Tarox R-156L” manufactured by Daito Kasei Kogyo Co., Ltd.) was used. The volume average particle diameter of the bengara was 0.1 to 0.6 ⁇ m.
- Black iron oxide for pigments A commercially available pigment-grade black iron oxide (“Tarox BL-100” manufactured by Daito Kasei Kogyo Co., Ltd.) was used.
- the volume average particle size of the black iron oxide for pigment was 0.1 to 0.6 ⁇ m.
- ⁇ Iron powder> Commercially available iron powder (Powder Tech) was used. In addition, the volume average particle diameter of this iron powder was about 80 ⁇ m.
- Test agent presents a smooth paste and does not feel rough when applied to the skin
- B Test agent generally presents a paste and can be spread on the skin but feels rough
- C Test The agent is sticky and cannot spread on the skin
- Viscosity> The viscosity of the test agent was measured using a rotary viscometer (manufactured by Tokyo Keiki Co., Ltd., B-type viscometer BH), and the obtained viscosity values are shown in Tables 2 and 4.
- the conditions for measuring the viscosity are as follows. Rotor: No. # 6 Rotation speed: 20rpm Measurement temperature: 25 ° C Measurement time: 60 seconds
- test agent No test agent remains on the skin surface
- B About 2 to 3 test agents remaining in the form of granules on the skin surface
- C More test agents than B remain on the skin surface
- D Almost all of the test agent remains on the skin surface-: The test agent cannot be applied and the test is impossible
- Test Agents 1 to 9 and Test Agent 17 contain water with the specific content, magnetic powder with the specific content, and a thickener. Yes. And the said magnetic body powder has the ferrite which shows a ferromagnetism as a main component, and has the volume average particle diameter of the said specific range. Therefore, the test agents 1 to 9 and the test agent 17 are easy to remove by adsorption from the skin surface.
- test agents 1 to 9 and the test agent 17 are mixed with sodium ascorbate phosphate.
- Sodium ascorbate phosphate is ionized into ascorbate phosphate ions and sodium ions in the test agent. Therefore, as shown in FIG. 1, these test agents are adsorbed and removed from the skin surface, and ascorbic acid phosphate ions (ion-introduced component 3) are applied to the skin surface. Therefore, by passing a weak current through the skin after these test agents are adsorbed and removed from the skin surface, the charged iontophoretic component 3 is moved toward the inside of the skin, and the penetration of the beauty component into the skin is prevented. Can be promoted. As a result, it is easier to improve the beauty effects that can be experienced.
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Abstract
Description
13~80質量%の磁性体粉と、
増粘剤とを含有し、
上記磁性体粉は、強磁性を示すフェライトを主成分とし、レーザー回折散乱法により得られる粒径分布から求めた体積平均粒径が20~100μmであることを特徴とする水系スキンケア剤にある。
とは、最も含有量の多い化合物であることを示している。すなわち、磁性体粉は、主成分としての強磁性を示すフェライトの他に、通常、ウスタイトやヘマタイト等の酸化度の異なる鉄系酸化物や、不可避不純物等を含有する。
・作製方法
ヘマタイト(Fe2O3)を粉砕した粉末に対し、固形分が55質量%となるように水を加えてスラリーを調製した。次いで、得られたスラリーの固形分に対して1質量%のポリビニルアルコールと、0.9質量%のカーボンブラックと、0.5質量%のポリカルボン酸塩とをスラリーに加えた後、この混合物に水を加えて固形分が55質量%のスラリーを調製した。次いで、アトライターを用いて得られたスラリーを1時間攪拌した。その後、スプレードライヤーを用いてスラリーを球状に造粒し、ジャイロシフターを用いて得られた造粒物の粒度調整を行った。
体積平均粒径の算出は、以下の方法により行った。まず、マグネタイト系磁性体粉に0.2%ヘキサメタリン酸ナトリウム水溶液を加えた後、ウルトラソニックホモジナイザー(超音波工業社製、UH-3C)を用いて1分間の超音波処理を行ってマグネタイト系磁性体粉の分散液を調製した。この分散液をマイクロトラック粒度分析計(日機装株式会社製、Model9320-X100)に導入し、屈折率1.81、温度25±5℃、湿度55±15%の条件下で測定を行い、レーザー回折散乱法による粒径分布を得た。得られた粒径分布から、体積分布モード、ふるい下表示での累積50%粒子径を算出し、これを体積平均粒径(メジアン径)とした。
JIS Z 8801に規定される標準ふるいを用いて、JIS H 2601に準じた方法によりマグネタイト系磁性体粉の分級を行った。これにより、呼び寸法37μm(400メッシュ)の標準ふるいを通過した粒子(小径粒子)の含有量及び呼び寸法105μm(145メッシュ)の標準ふるいを通過しなかった粒子(大径粒子)の含有量を測定した。
磁気特性の測定は、積分型B-Hトレーサー((株)理研電子製、BHU-60型)を使用して以下の手順で行った。まず、電磁石間に磁場測定用Hコイル及び磁化測定用4πIコイルを入れ、マグネタイト系磁性体粉を4πIコイル内に入れる。次いで、電磁石の電流を変化させ磁場Hを変化させたHコイル及び4πIコイルの出力をそれぞれ積分し、X軸にH出力をとり、Y軸に4πIコイルの出力をとったヒステリシスループを記録紙に描く。このヒステリシスループから飽和磁化、残留磁化及び保持力を算出した。なお、ヒステリシスループの測定条件は、試料充填量:約1g、試料充填セル:内径7mmφ±0.02mm、高さ10mm±0.1mm、4πIコイル:巻数30回、印加磁場:3000エルステッドとした。
X線回折法を用いて、マグネタイト(Fe3O4)、ヘマタイト(Fe2O3)及びウスタイト(FeO)の組成比を以下の方法で算出した。
市販されている顔料グレードのベンガラ(大東化成工業株式会社製「タロックスR-156L」)を使用した。なお、このベンガラの体積平均粒径は、0.1~0.6μmであった。
市販されている顔料グレードの黒酸化鉄(大東化成工業株式会社製「タロックスBL-100」)を使用した。なお、この顔料用黒酸化鉄の体積平均粒径は、0.1~0.6μmであった。
市販されている鉄粉(パウダーテック社製)を使用した。なお、この鉄粉の体積平均粒径は、約80μmであった。
試験剤1~21の製剤の性状を目視観察した。その結果を表2及び表4に示した。なお、表2及び表4中の「製剤の性状」欄に記載した記号は、それぞれ、以下の状態に対応する記号である。
A:試験剤は滑らかなペースト状を呈し、肌に塗布した際にざらつき感がない状態
B:試験剤は概ねペースト状を呈し、肌に塗り広げることはできるがざらつき感を感じる状態
C:試験剤は粘り気のある塊状を呈し、肌に塗り広げることができない状態
回転式粘度計(東京計器製、B型粘度計BH)を用いて試験剤の粘度を測定し、得られた粘度の値を表2及び表4に示した。なお、粘度測定の条件は以下の通りである。
ローター:No.#6
回転数:20rpm
測定温度:25℃
測定時間:60秒
試験剤を肌に塗布した後、数分間静置した。その後、表面磁束密度が400G、800G、1200Gまたは2800Gである4種類の磁石を、肌に塗布した試験剤に接近させた。そして、磁石と肌との間隔が約10mmに達した時の、試験剤の吸着状態を目視観察した。その結果を表2及び表4に示した。なお、表2及び表4中の「吸着除去のし易さ」欄に記載した記号は、それぞれ、以下の状態に対応する記号である。
A:試験剤が皮膜状に連なって吸着除去された状態
B:試験剤が皮膜状に連なって吸着除去されたが、Aに比べて膜状構造が小さい状態
C:試験剤の吸着除去が完了せず、肌と磁石との間に試験剤が浮いている状態
D:試験剤が磁石に反応せず、吸着除去が不可能な状態
-:試験剤が塗布できず、試験が不可能な状態
試験剤を肌に塗布した後、数分間静置した。その後、表面磁束密度が400G、800G、1200Gまたは2800Gである4種類の磁石を、肌に塗布した試験剤に接近させた。そして、磁石と肌との間隔が約10mmに達した時の、肌表面に残留した試験剤の量を目視観察した。その結果を表2及び表4に示した。なお、表2及び表4中の「肌表面への残留量」欄に記載した記号は、それぞれ、以下の状態に対応する記号である。
A:肌表面に試験剤が残留していない状態
B:肌表面に粒状に残留した試験剤が2~3箇所程度存在している状態
C:肌表面にBよりも多くの試験剤が残留している状態
D:ほぼ全量の試験剤が肌表面に残留している状態
-:試験剤が塗布できず、試験が不可能な状態
Claims (11)
- 4~85質量%の水と、
13~80質量%の磁性体粉と、
増粘剤とを含有し、
上記磁性体粉は、強磁性を示すフェライトを主成分とし、レーザー回折散乱法により得られる粒径分布から求めた体積平均粒径が20~100μmであることを特徴とする水系スキンケア剤。 - 粘度が9000mPa・s以上であることを特徴とする請求項1に記載の水系スキンケア剤。
- 上記増粘剤として10~45質量%のグリセリンを含むことを特徴とする請求項1または2に記載の水系スキンケア剤。
- チキソトロピー性を付与するチキソ剤を含むことを特徴とする請求項1~3のいずれか1項に記載の水系スキンケア剤。
- 界面活性剤を含有することを特徴とする請求項1~4のいずれか1項に記載の水系スキンケア剤。
- 上記磁性体粉を構成する粒子は、表面に樹脂皮膜を有していることを特徴とする請求項1~5のいずれか1項に記載の水系スキンケア剤。
- 上記磁性体粉は、レーザー回折散乱法により得られる粒径分布から求めた体積平均粒径が50~75μmであり、粒径が37μm未満である粒子の含有量が15質量%以下であり、かつ、粒径が105μm以上である粒子の含有量が5質量%以下であることを特徴とする請求項1~6のいずれか1項に記載の水系スキンケア剤。
- 上記磁性体粉は、80質量%以上のマグネタイトと、ウスタイト、ヘマタイト及び不可避不純物からなる残部とからなる化学成分を有することを特徴とする請求項1~7のいずれか1項に記載の水系スキンケア剤。
- 上記磁性体粉の飽和磁化が80Am2/kg以上であることを特徴とする請求項1~8のいずれか1項に記載の水系スキンケア剤。
- 電荷を帯びたイオン導入成分を含むことを特徴とする請求項1~9のいずれか1項に記載の水系スキンケア剤。
- 25℃における導電率が20μS/cm以上であることを特徴とする請求項10に記載の水系スキンケア剤。
Priority Applications (8)
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CN201480065160.2A CN105792796B (zh) | 2013-11-29 | 2014-11-17 | 水系护肤剂 |
AU2014355666A AU2014355666A1 (en) | 2013-11-29 | 2014-11-17 | Water-based skin care agent |
CA2931273A CA2931273A1 (en) | 2013-11-29 | 2014-11-17 | Aqueous skin care agent |
RU2016125753A RU2680403C1 (ru) | 2013-11-29 | 2014-11-17 | Водное средство ухода за кожей |
EP14866078.0A EP3075374A4 (en) | 2013-11-29 | 2014-11-17 | Water-based skin care agent |
JP2015550646A JP6452619B2 (ja) | 2013-11-29 | 2014-11-17 | 水系スキンケア剤 |
US15/100,169 US10932997B2 (en) | 2013-11-29 | 2014-11-17 | Aqueous skin care agent |
KR1020167017414A KR20160092000A (ko) | 2013-11-29 | 2014-11-17 | 수계 스킨 케어제 |
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JP2013247667 | 2013-11-29 | ||
JP2013-247667 | 2013-11-29 |
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WO2015079942A1 true WO2015079942A1 (ja) | 2015-06-04 |
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PCT/JP2014/080308 WO2015079942A1 (ja) | 2013-11-29 | 2014-11-17 | 水系スキンケア剤 |
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US (1) | US10932997B2 (ja) |
EP (1) | EP3075374A4 (ja) |
JP (2) | JP6452619B2 (ja) |
KR (1) | KR20160092000A (ja) |
CN (1) | CN105792796B (ja) |
AU (1) | AU2014355666A1 (ja) |
CA (1) | CA2931273A1 (ja) |
RU (1) | RU2680403C1 (ja) |
SG (1) | SG10201804347QA (ja) |
TW (1) | TWI679025B (ja) |
WO (1) | WO2015079942A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US10548822B2 (en) | 2013-12-25 | 2020-02-04 | Mtg Co., Ltd. | Beauty care method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPWO2015098895A1 (ja) * | 2013-12-26 | 2017-03-23 | 株式会社 Mtg | スキンケア剤 |
CN107822941A (zh) * | 2017-11-20 | 2018-03-23 | 广东旭睿美医疗科技有限公司 | 美容护肤剂 |
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- 2014-11-17 SG SG10201804347QA patent/SG10201804347QA/en unknown
- 2014-11-17 WO PCT/JP2014/080308 patent/WO2015079942A1/ja active Application Filing
- 2014-11-17 CN CN201480065160.2A patent/CN105792796B/zh active Active
- 2014-11-17 RU RU2016125753A patent/RU2680403C1/ru not_active IP Right Cessation
- 2014-11-17 AU AU2014355666A patent/AU2014355666A1/en not_active Abandoned
- 2014-11-17 KR KR1020167017414A patent/KR20160092000A/ko not_active Application Discontinuation
- 2014-11-17 CA CA2931273A patent/CA2931273A1/en not_active Abandoned
- 2014-11-17 US US15/100,169 patent/US10932997B2/en active Active
- 2014-11-17 JP JP2015550646A patent/JP6452619B2/ja active Active
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US10548822B2 (en) | 2013-12-25 | 2020-02-04 | Mtg Co., Ltd. | Beauty care method |
Also Published As
Publication number | Publication date |
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EP3075374A1 (en) | 2016-10-05 |
US10932997B2 (en) | 2021-03-02 |
CN105792796A (zh) | 2016-07-20 |
JP6452407B2 (ja) | 2019-01-16 |
RU2680403C1 (ru) | 2019-02-21 |
TWI679025B (zh) | 2019-12-11 |
JP2015127327A (ja) | 2015-07-09 |
AU2014355666A1 (en) | 2016-06-09 |
EP3075374A4 (en) | 2017-05-03 |
SG10201804347QA (en) | 2018-06-28 |
US20180168953A1 (en) | 2018-06-21 |
JPWO2015079942A1 (ja) | 2017-03-16 |
CA2931273A1 (en) | 2015-06-04 |
TW201609157A (zh) | 2016-03-16 |
KR20160092000A (ko) | 2016-08-03 |
CN105792796B (zh) | 2019-11-29 |
JP6452619B2 (ja) | 2019-01-16 |
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