JP2005255667A - Liquid cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily prepare a cloudy liquid cosmetic excellent in long-term stability and vibration or shaking stability and yielding refreshing touch feeling in use and skin-ameliorating effect. <P>SOLUTION: This liquid cosmetic is obtained by compounding together (a) 0.01-2 mass% of an isostearic acid-containing oily component, (b) 0.04-1.0 mass% of a hydrophilic activator selected from polyoxyethylene (30) phytosterol, polyoxyethylene octyl dodecyl ether, polyoxyethylene polyoxypropylene decyl tetradecyl ether and polyoxyethylene hydrogenated castor oil and (c) 0.01-0.75 mass% of a lipophilic activator selected from sorbitan sesquisostearate and polyoxyethylene methylpolysiloxane copolymer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a liquid cosmetic, and more particularly to a white lotion-type refreshing skin-like liquid cosmetic.

  In recent years, cosmetics that are oily in appearance and have become cloudy in appearance have become popular because they give skin-friendly feeling and can realize a wide range of usage feeling and skin improvement effects that suit your taste. As well as being widely used in body care products.

However, for example, in a cosmetic that is expected to have higher skin penetration and skin improvement effect by making an oil or an oil-soluble drug into ultrafine particles, the cloudy cosmetic can be easily manufactured with excellent temporal stability. There is nothing. In particular, when trying to obtain a cloudy cosmetic by using a high-pressure emulsifier to make the oil fine particles, the high-pressure emulsifier must be passed many times, requiring a long production time and increasing the production amount. There are also restrictions. Moreover, although there is also a method for easily obtaining a cloudy cosmetic using a specific surfactant (for example, Patent Documents 1 and 2), even if the long-term stability in a stationary state is good, it is transported to the user. The phenomenon that the translucency changes due to the vibration caused by the user or the vibration while the user is using the product occurs, and the disadvantage that the commercial value is lost often occurs. In addition, although white cloudy lotion with a stable oil content is known to provide a refreshing feel, the amount of surfactant should be adjusted in order to stably add the oil content to the skin lotion. However, if the amount of the surfactant is large, the amount of oil that can be blended increases, but stickiness due to the surfactant occurs accordingly.
Thus, in the prior art, it has been difficult to prepare a cloudy lotion having an L value of about 40, which can stably blend oil while suppressing the blending amount of the surfactant, and has a refreshed feeling of use.

Japanese Unexamined Patent Publication No. 63-132913 JP-A 64-047710

  The present invention has been made in response to the conventional circumstances as described above, has excellent long-term stability and vibration and shaking stability, has a refreshing feeling of use and a skin improvement effect, and is easily manufactured. An object is to provide a white turbid liquid cosmetic.

That is, the present invention is a liquid cosmetic comprising the following components (a) to (c).
(A) 0.01-2 mass% of oil containing 34 mass% or more of isostearic acid in the total oil
(B) A hydrophilic activator selected from polyoxyethylene (30) phytosterol, polyoxyethylene octyldodecyl ether, polyoxyethylene polyoxypropylene decyl tetradecyl ether and polyoxyethylene hydrogenated castor oil is used in an amount of 0.04 to 1.0. mass%
(C) 0.001 to 0.75% by mass of a lipophilic active agent selected from sorbitan sesquiisostearate and a polyoxyethylene methylpolysiloxane copolymer

According to the present invention, conventionally, it has been difficult to prepare a cloudy cosmetic having an L value of 40 or less in which a relatively large amount of oil is stably blended while suppressing the amount of the surfactant. Is made possible by blending a specific amount of. In the present invention, it is preferable to further contain (d) isostearyl alcohol.
The liquid cosmetic according to the present invention has a particle size of emulsified particles of 100 to 500 nm, preferably 100 to 300 nm, and is a cloudy liquid cosmetic.

  ADVANTAGE OF THE INVENTION According to this invention, it can be set as the cloudy liquid cosmetics which are excellent in long-term stability and vibration and shaking stability, have a refreshing use feeling and a skin improvement effect, and can be manufactured simply.

The best mode of the present invention will be described below.
(A) Oil content In the present invention, isostearic acid is used as an essential component. The amount of isostearic acid is 34% by mass or more based on the total oil content, and only isostearic acid may be used as the oil content. Separation occurs when the amount of isostearic acid is less than 34% by mass of the oil.

  Other oils used in the liquid cosmetic of the present invention are not particularly limited as long as they can be incorporated into the cosmetic, and may be derived from natural products or synthesized, and may be liquid or solid.

  For example, avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, sasanqua oil, castor oil, flaxseed oil, safflower oil, Cottonseed oil, Eno oil, Soybean oil, Peanut oil, Tea seed oil, Kaya oil, Rice bran oil, Sinagiri oil, Japanese Kiri oil, Jojoba oil, Germ oil, Triisooctanoic acid glycerin, Triisopalmitic acid glycerin, Isopalmitic acid octylate, Isopropyl isostearate, isostearyl isostearate, isocetyl isostearate, hexyl isostearate, myristyl isostearate, isocetyl octoate, cetyl isooctanoate, isostearyl octoate, isodecyl isononanoate, octyldodecyl dimethyloctanoate, Oleyl stannate, isostearyl erucate, isocetyl stearate, octyl stearate, isostearyl palmitate, isocetyl palmitate, octyl palmitate, isostearyl myristate, isocetyl myristate, octyldodecyl myristate, decyl myristate, palmitic acid Isopropyl, isopropyl myristate, trimethylolpropane triisostearate, neopentyl glycol dicaprate, dioctyl sebacate, octyldodecyl 12-stearoyloxystearate, dioctyldecyl stearoylglutamate, dioctyl adipate, diisostearyl malate, methoxycinnax Octyl acid, octyl dodecyl lactate, isostearyl lactate, octyl paradimethylaminobenzoate Liquid oils such as liquid paraffin, squalane, isoparaffin, α-olefin oligomer, polybutene, volatile cyclic silicone, volatile dimethylpolysiloxane, methylphenyl silicone, oleyl alcohol, 2-octyldodecanol; cocoa butter, coconut oil, horse Fat, hydrogenated palm oil, palm oil, beef tallow, sheep fat, hydrogenated beef tallow, palm kernel oil, pork tallow, beef bone oil, owl kernel oil, hydrogenated oil, beef leg oil, owl, hydrogenated castor oil, beeswax, candelilla wax, cotton Wax, carnauba wax, bayberry wax, ibota wax, whale wax, montan wax, nukarou, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugarcane wax, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin, jojoballow, hard lanolin, shellac wax, cholesterol Phytosterols, microcrystalline wax, behenyl alcohol, stearyl alcohol, cetyl alcohol, behenic acid, stearic acid, solid fats and waxes, such as myristic acid. These can be used individually by 1 type or in combination of 2 or more types.

  Among these oils, hydrocarbon oils such as liquid paraffin, squalane, α-olefin oligomer, isoparaffin, polybutene, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetradecamethylcycloheptasiloxane Volatile cyclic silicone oils such as decamethyltetrasiloxane, dodecamethylpentasiloxane, tetradecamethylhexasiloxane, hexadecamethylheptasiloxane and other volatile dimethylpolysiloxanes alone or in combination with other oils As a result, a liquid cosmetic composition having good stability and excellent use feeling can be obtained.

  In the oil of the liquid cosmetic composition of the present invention, an oil-soluble drug and / or fragrance can be further blended to enhance the effect as a cosmetic when the drug penetrates into the skin, or the aromacology effect by the fragrance. Or can be granted.

  Examples of oil-soluble drugs include retinol, retinol acetate, retinol palmitate, riboflavin butyrate, pyridoxine dicaprylate, pyridoxine dipalmitate, pyridoxine dilaurate, ascorbyl dipalmitate, ergocalciferol, cholecalciferol, tocopherols, Examples include tocopherol acetate, menadione, benzyl nicotinate, trichlorocarbanilide, trichlorohydroxydiphenyl ether, stearyl glycyrrhetinate, γ-oryzanol, and dibutylhydroxytoluene.

  The liquid cosmetic composition of the present invention contains 0.01 to 2% by mass, preferably 0.1 to 1% by mass of oil containing isostearic acid. If it is less than 0.01% by mass, the cloudiness is low (L value is high), and if it exceeds 2% by mass, it is difficult to obtain a stable cloudy lotion.

(B) Hydrophilic activator The hydrophilic activator used in the present invention is polyoxyethylene (30) phytosterol, polyoxyethylene octyldodecyl ether, polyoxyethylene polyoxypropylene decyl tetradecyl ether and polyoxyethylene hydrogenated castor oil. It is chosen from. When a hydrophilic activator other than the above components is used, the oil cannot be blended stably and separation occurs at a high temperature.

  Examples of commercially available polyoxyethylene (30) phytosterol include NIKKOL BPS-30 (trade name, manufactured by Nikko Chemicals Co., Ltd.).

  As what is marketed as polyoxyethylene octyldodecyl ether, Emalex OD-30 (trade name made by Nippon Emulsion Co., Ltd.) and Theodor E-2020 (trade name made by Japan Emulsion Co., Ltd.) can be mentioned.

  As what is marketed as polyoxyethylene polyoxypropylene decyl tetradecyl ether, Ssafe 1324 (D) (Nippon Yushi Co., Ltd. brand name) is mentioned.

  Examples of commercially available polyoxyethylene hydrogenated castor oil include NIKKOL HCO-60 (trade name, manufactured by Nikko Chemicals Co., Ltd.).

  The compounding quantity of the hydrophilic active agent in the liquid cosmetics of this invention is 0.04-1.0 mass%, Preferably it is 0.08-0.20 mass%. If it is less than 0.04% by mass, a stable cloudy cosmetic cannot be obtained and separation occurs, and if it exceeds 1.0% by mass, it becomes sticky to use.

(C) Lipophilic active agent The lipophilic active agent used in the present invention is selected from sorbitan sesquiisostearate and a polyoxyethylene methyl polysiloxane copolymer. When a lipophilic active agent other than the above components is used, a stable cloudy cosmetic cannot be obtained.
As what is marketed as sorbitan sesquiisostearate, ESTAMOL 182V (Nisshin Oilio Co., Ltd. brand name) is mentioned. Silicone KF6019 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) may be mentioned as a commercially available polyoxyethylene methylpolysiloxane copolymer.

  The compounding quantity of the lipophilic active agent in the liquid cosmetics of this invention is 0.001-0.75 mass%, Preferably it is 0.02-0.10 mass%. If it is less than 0.001% by mass, the oil cannot be stably blended, and if it exceeds 0.75% by mass, a stable cloudy cosmetic cannot be obtained.

  In the liquid cosmetic composition of the present invention, the blending ratio (mass ratio) of the (a) oil component, the total amount of the (b) hydrophilic activator component and the (c) lipophilic activator component is (a). : (B) + (c) = 15: 1 to 1:15, more preferably (a) :( b) + (c) = 5: 1 to 2: 1.

  In the present invention, by further including (d) isostearyl alcohol, the solubility of isostearic acid is enhanced, and in particular, precipitation of isostearic acid at a low temperature is effectively suppressed, and long-term stability is improved. it can. (D) 0.01-0.1 mass% is suitable for the compounding quantity of isostearyl alcohol.

  In addition to the above components, the liquid cosmetic of the present invention includes components used in general cosmetics such as propylene glycol, dipropylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, diethylene glycol, triethylene glycol, Glycols such as polyethylene glycol of higher molecular weight; glycerin, diglycerin, polyglycerins of higher molecular weight; sugar alcohols such as sorbitol, mannitol, maltitol, xylitol, erythritol; fructose, glucose, galactose, maltose, Sugars such as lactose and trehalose; inorganic powders such as talc, kaolin, mica, silica and zeolite; polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene Organic powder such as powder, copolymer resin powder of styrene and acrylic acid, cellulose powder; inorganic white pigment such as titanium dioxide and zinc oxide; inorganic red pigment such as iron oxide (Bengara); yellow iron oxide, loess, etc. Inorganic yellow pigments; black pigments such as black iron oxide and carbon black; inorganic green pigments such as chromium oxide, chromium hydroxide and cobalt titanate; inorganic blue pigments such as ultramarine and bitumen; titanium oxide coated mica, coloring Pearl pigments such as titanium oxide coated mica, bismuth oxychloride, fish scale foil; metal powder pigments such as aluminum powder and copper powder; red 201, red 202, red 204, red 205, red 220, red 226 , Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, Blue 404, etc. Organic pigments: Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203 Organic pigments such as zirconium, barium or aluminum lakes such as green No. 3 and blue No. 1; natural pigments such as chlorophyll and β-carotene; plants such as gum arabic, tragacanth gum, galactan, guar gum, carob gum, caraya gum, gellan gum, carrageenan Microbial polymers such as xanthan gum, dextran, succinoglucan and pullulan; animal polymers such as collagen, casein, albumin and gelatin; starch polymers such as carboxymethyl starch and methylhydroxypropyl starch; methylcellulose , Ethyl cellulose, Cellulose polymers such as hydroxyhydroxycellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, sodium carboxymethylcellulose, crystalline cellulose; alginic acid polymers such as sodium alginate and propylene glycol alginate; polyvinyl alcohol, polyvinyl acetate, polyvinyl Vinyl polymers such as methyl ether, polyvinyl pyrrolidone, vinyl pyrrolidone and vinyl acetate copolymer, carboxyvinyl polymer; sodium polyacrylate, polyethyl acrylate, alkanolamine polyacrylate, alkyl methacrylate and dimethylaminoethyl methacrylate copolymer Poly-2-acrylamido-2-methylpropanesulfonic acid, poly Acrylic high molecules such as methacryloyloxytrimethylammonium; vitamins such as magnesium ascorbate phosphate, glucoside of ascorbic acid, vitamin B6 hydrochloride, pantothenyl ethyl ether; UV absorbers, chelating agents, bactericides, anti-inflammatory agents, antiseptics , Plant extracts, amino acids, refreshing agents, etc .; lower alcohols such as ethanol, isopropyl alcohol, arbutin, tranexamic acid, amides of tranexamic acid or salts thereof, salicylic acid, alkoxysalicylic acid or salts thereof, 3-O-ethylascorbine A water-soluble drug such as an acid or a salt thereof, a moisturizing agent such as a polyoxyethylene polyoxypropylene dimethyl ether random copolymer, and the like can be appropriately blended within a range not impairing the effects of the present invention.

  The liquid cosmetic composition of the present invention can be produced by adding a heat-dissolved surfactant and an oil component layer to a water phase dissolved with stirring while stirring.

  The liquid cosmetic of the present invention is a cloudy cosmetic having an L value of 1 to 60. Here, the L value is a scale representing the degree of turbidity, and when an SM color computer (SM-4: manufactured by Suga Test Instruments Co., Ltd.) is used, 5 ml of purified water is put into a glass cell and light is transmitted. It is a value when the transparency is 100, the light is completely blocked, and the transparency when there is no transmitted light is 0.

  The liquid cosmetic composition of the present invention can be used as a skin lotion, cosmetic liquid, and emulsion for skin care, as well as a sunscreen base, a suntan base, and a cleaning base. Of these, those having a skin lotion shape are particularly preferred.

Next, examples of the present invention will be described.
Prior to this example, the evaluation method and its criteria performed in this example will be described.

(1) Average particle size ALV-5000 / EPP Multiple Tau
The average particle size of the emulsified droplets was measured with a Digital Correlator (manufactured by Marubun Co., Ltd.) and evaluated according to the following evaluation criteria.
A: Average particle size of 300 nm or less.
○: Average particle diameter is more than 300 nm and 500 nm or less.
(Triangle | delta): An average particle diameter exceeds 500 nm and is 3000 nm or less.
X: Average particle diameter exceeds 3000 nm.

(2) Average particle diameter after shaking The average particle diameter after vibration and shaking during transportation and use is set in a 100 mL glass container filled with half of the sample in a shaker of Inoue Seieido Co., Ltd. The average particle size after shaking for 20 minutes at 300 times / minute was measured and evaluated.
A: Average particle size of 300 nm or less.
○: Average particle diameter is more than 300 nm and 500 nm or less.
(Triangle | delta): An average particle diameter exceeds 500 nm and is 3000 nm or less.
X: Average particle diameter exceeds 3000 nm.

(3) Long-term stability The long-term stability was evaluated according to the following criteria by storing test products at temperatures of 0 ° C. and 50 ° C. for 3 months.
A: No abnormality such as separation or change in average particle diameter is observed.
○: Slight separation, abnormality in average particle diameter, precipitation of isostearic acid, etc. are observed.
Δ: Slight separation, abnormality in average particle diameter, precipitation of isostearic acid, etc. are observed.
X: Abnormalities such as change in average particle diameter and precipitation of isostearic acid are observed.

(4) Usability The usability of the cloudy cosmetic of the present invention was evaluated by 20 female panels and evaluated according to the following criteria as a use test.
A: More than 16 panels were evaluated as being very refreshing.
○: 10 to 15 panels evaluated as being very refreshing.
Δ: 6 to 9 panels evaluated as being very refreshing.
X: 5 or less panels evaluated as being very refreshing.

Examples 1-16, Comparative Examples 1-5
With the formulations described in the following Tables 1 to 4, liquid cosmetics were produced by the following methods, and the characteristics were evaluated by the methods described above. The results are also shown in Tables 1-4.
In the table, dimethylpolysiloxane is silicone KF-96L-1.5CS (manufactured by Shin-Etsu Chemical), POE (30) phytosterol is Nikkor BPS-30 (manufactured by Nikko Chemicals), and POE octyldodecyl ether is Emalex OD-30 (Japan) Emulsion) or Theodor E-2020 (Nippon Emulsion), POEPOP decyl tetradecyl ether is essafe 1324 (D) (manufactured by NOF Corporation), sesquiisostearic acid sorbitan is Estemol 182V (Nisshin Oilio) POE methylpolysiloxane copolymer is silicone KF-6019 (manufactured by Shin-Etsu Chemical), POE behenyl ether is Nikkor BB-20 (manufactured by Nikko Chemicals), and POE glyceryl isostearate is Emalex GWIS (manufactured by Nippon Emulsion) Using.
(Manufacturing method)
In the stirred and dissolved aqueous phase, the surfactant and oil component dissolved by heating were added with stirring to obtain a cloudy lotion.

(Example 17) Cloudy lotion (prescription)
Ethyl alcohol 5.0 (mass%)
Glycerin 1.0
1,3-butylene glycol 5.0
Polyoxyethylene (30) phytosterol 0.1
Sorbitan sesquiisostearate 0.033
Squalane 0.25
Isostearic acid 0.25
Sodium hexametaphosphate 0.03
Trimethylglycine 1.0
Sodium polyaspartate 0.1
α-tocopherol 2-L-ascorbic acid phosphate diester potassium 0.1
Thiotaurine 0.1
Green tea extract 0.1
Western mint extract 0.1
Iris root extract 0.1
HEDTA3 sodium 0.1
Citric acid 0.2
Sodium citrate 0.8
Phenoxyethanol Appropriate amount Purified water Residual fragrance Appropriate amount

(Example 18) Whitening cloudy lotion (prescription)
Ethanol 10.0 (mass%)
Dipropylene glycol 1.0
1,3-butylene glycol 0.6
Polyethylene glycol 1000 1.0
Polyoxyethylene methyl glucoside 1.0
Isostearic acid 0.2
Glyceryl tri-2-ethylhexanoate 0.3
Polyoxyethylene (30) phytosterol 0.09
Sorbitan sesquiisostearate 0.03
Citric acid 0.05
Sodium citrate 0.2
Potassium hydroxide 0.4
Dipotassium glycyrrhizinate 0.1
Arginine hydrochloride 0.1
L-ascorbic acid 2-glucoside 2.0
Ogon Extract 0.1
Yukinoshita extract 0.1
Nettle extract 0.1
Tranexamic acid 1.0
Edetate trisodium 0.05
2-Ethylhexyl paramethoxycinnamate 0.01
Dibutylhydroxytoluene Appropriate amount Paraben Appropriate amount Deep seawater 3.0
Purified water Residual fragrance Appropriate amount

(Example 19) Cloudy lotion (prescription)
Ethyl alcohol 5.0 (mass%)
Glycerin 1.0
1,3-butylene glycol 3.0
Polyoxyethylene octyldodecyl ether 0.12
Sorbitan sesquiisostearate 0.03
Cetyl octanoate 0.2
Isostearic acid 0.4
Sodium hexametaphosphate 0.03
Trimethylglycine 1.0
Sodium polyaspartate 0.1
Tocopherol acetate 0.05
Thiotaurine 0.1
Green tea extract 0.1
Western mint extract 0.1
Iris root extract 0.1
HEDTA3 sodium 0.1
Lactic acid 0.004
Sodium lactate 0.4
Phenoxyethanol Appropriate amount Purified water Residual fragrance Appropriate amount

(Example 20) Cloudy lotion (prescription)
Ethanol 5.0 (mass%)
Glycerin 0.5
Dipropylene glycol 2.0
1,3-butylene glycol 6.0
Polyoxyethylene (30) phytosterol 0.06
Sorbitan sesquiisostearate 0.02
Squalane 0.2
Isostearic acid 0.2
Rosemary oil 0.01
Sage oil 0.01
Succinic acid 0.14
Succinic acid 2Na 0.36
Sodium hexametaphosphate 0.03
Hydroxypropyl-β-cyclodextrin 0.1
Mukuroji extract 0.1
Ages Extract 0.1
Lily extract 0.1
Oat extract 0.1
Togenashi extract 0.1
Kiso Extract 0.1
Lavender oil 0.1
Tounin extract 0.1
Sodium alginate 0.001
Purified water residue

(Example 21) Cloudy lotion (prescription)
Ethyl alcohol 5.0 (mass%)
Glycerin 1.0
1,3-butylene glycol 5.0
Polyoxyethylene (30) phytosterol 0.12
Sorbitan sesquiisostearate 0.4
Squalane 0.4
Isostearic acid 0.4
Sodium hexametaphosphate 0.03
Trimethylglycine 1.0
Sodium polyaspartate 0.1
Thiotaurine 0.1
Green tea extract 0.1
Western mint extract 0.1
Iris root extract
HEDTA3 sodium 0.1
Phenoxyethanol Appropriate amount Phosphoric acid 0.3
Purified water Residual fragrance Appropriate amount

Claims (5)

A liquid cosmetic comprising the following components (a) to (c):
(A) 0.01-2 mass% of oil containing 34 mass% or more of isostearic acid in the total oil
(B) A hydrophilic activator selected from polyoxyethylene (30) phytosterol, polyoxyethylene octyldodecyl ether, polyoxyethylene polyoxypropylene decyl tetradecyl ether and polyoxyethylene hydrogenated castor oil is used in an amount of 0.04 to 1.0. mass%
(C) 0.001 to 0.75% by mass of a lipophilic active agent selected from sorbitan sesquiisostearate and a polyoxyethylene methylpolysiloxane copolymer   The blending ratio (mass ratio) of the component (a) and the total amount of the component (b) and the component (c) is (a) :( b) + (c) = 15: 1 to 1:15. The liquid cosmetic according to claim 1.   The liquid cosmetic according to claim 1, further comprising (d) isostearyl alcohol.   (A) The liquid cosmetic according to claim 1, wherein an average particle size of the dispersed droplets of oil is 100 to 500 nm. The liquid cosmetic according to claim 1, wherein the cosmetic is a cloudy cosmetic having an L value of 1 to 60.