Water-in-oil emulsion cosmetic

Abstract

To provide a single-phase water-in-oil cosmetic that combines superior usability and superior stability over time.SOLUTION: A water-in-oil emulsion cosmetic comprises (A) a silicone-based surfactant with an HLB of 5 or less, (B) oil, and (C) water, where the proportion of the aqueous phase is 50-60 mass%, and the viscosity measured at 30°C with a type B rotational viscometer is 200-6000 mPa s.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a water-in-oil emulsion cosmetic. [Background technology]

[0002] Cosmetics that are applied directly to the skin are desired to give the skin a pleasant feeling of use, such as moisture, moistness, and fine texture, when applied. Various methods have been investigated to achieve such a feeling of use, and it is known that the feeling of use of cosmetics changes depending on the emulsification technology, and optimal emulsification technology is being investigated. In such investigations, it has been found that water-in-oil cosmetics with a high ratio of aqueous phase are superior in that they can give a feeling of moisture. In water-in-oil cosmetics, the use of a specific silicone surfactant and a specific sucrose fatty acid ester as emulsifiers has been investigated (for example, Patent Document 1).

[0003] In water-in-oil cosmetic compositions, polar oil ultraviolet absorbents are generally blended to impart a sunscreen effect. If the viscosity of the cosmetic composition is reduced to facilitate application, it tends to be difficult to maintain stability as a single phase without separation. [Prior art documents] [Patent documents]

[0004] JP 2001-89356 A Summary of the Invention

[0005] The present inventors have surprisingly found that by blending a specific silicone surfactant and setting a specific aqueous phase ratio in a water-in-oil cosmetic, it is possible to achieve low viscosity and good stability over time while realizing an excellent feel when used. The present invention is based on these findings.

[0006] According to the present invention, there is provided the following water-in-oil emulsion cosmetic preparation. [1] (A) A silicone surfactant having an HLB value of 5 or less, (B) oil, and (C)Water A water-in-oil emulsion cosmetic comprising: The ratio of the aqueous phase is 50 to 60% by mass, and A water-in-oil emulsion cosmetic having a viscosity of 200 to 6,000 mPa s as measured at 30°C using a B-type rotational viscometer. [2] The water-in-oil emulsion cosmetic according to [1], wherein component (A) is a polyether-modified silicone. [3] The water-in-oil emulsion cosmetic according to [1] or [2], wherein the component (A) comprises a polyether-modified silicone represented by formula (a1) (A1) and having a mass average molecular weight of 30,000 or more. [ka] [In the formula, A is a methyl group, a phenyl group, and a group represented by the general formula: -C3H6O(C2H4O) p (C3H6O) q R' (In the formula, R' is a group selected from the group consisting of a hydrogen atom, an acyl group, and an alkyl group having 1 to 4 carbon atoms; p is an integer from 5 to 50; q is an integer from 5 to 50; The repeating units (C2H4O) and (C3H6O) may be arranged randomly or in blocks. is a group selected from the group consisting of polyoxyalkylene groups represented by R is a methyl group or a phenyl group; m is an integer from 50 to 1000; n is an integer from 1 to 40; The repeating units (SiRO) and (SiRAO) may be arranged randomly or in blocks, The content of polyoxyalkylene groups in the polyether-modified silicone is 40% by weight or more.] [4] The water-in-oil emulsion cosmetic according to [3], wherein the component (A1) is PEG / PPG-19 / 19 dimethicone. [5] (A) component is Component (A1), (A2) a polyether-modified silicone different from component (A1); The water-in-oil emulsion cosmetic according to [3], which is a combination of [6] The water-in-oil emulsion cosmetic according to any one of [1] to [5], wherein the component (C) comprises a silicone oil. [7] The water-in-oil emulsion cosmetic according to any one of [1] to [6], wherein the component (C) comprises a polar oil. [8] The water-in-oil emulsion cosmetic according to [7], wherein the blending amount of the polar oil is 1 to 20 mass% based on the total amount of the water-in-oil emulsion cosmetic. [9] The water-in-oil emulsion cosmetic according to any one of [1] to [8], further comprising (D) an oil-soluble film-forming agent.

[10] The water-in-oil emulsion cosmetic according to [9], wherein the blending amount of component (D) is 0.5 to 20 mass % based on the total amount of the water-in-oil emulsion cosmetic.

[11] The water-in-oil emulsion cosmetic according to any one of [1] to

[10] , which is a single-phase water-in-oil emulsion cosmetic.

[0007] According to the present invention, it is possible to provide a low-viscosity water-in-oil cosmetic composition which simultaneously satisfies excellent sensation upon use, such as freshness, and good stability over time.

[0008] The water-in-oil cosmetic composition according to the present invention (hereinafter, simply referred to as "cosmetic composition") has the following properties: (A) Silicone surfactants with an HLB value of 5 or less, (B) oil, and (C) water. comprising The ratio of the aqueous phase is 60% by mass or more, The viscosity measured at 30°C using a B-type rotational viscometer is 200 to 6000 mPa·s.

[0009] The components contained in the cosmetic composition according to the present invention are described below.

[0010] (A) Silicone surfactants with HLB of 5 or less The cosmetic preparation according to the present invention comprises (A) a silicone surfactant having an HLB (Hydrophilic-Lypophilic Balance) of 5 or less (hereinafter, sometimes referred to as component (A), the same applies to other components). The HLB value of the component (A) is 5 or less, and preferably 2-5. Component (A) is a nonionic surfactant having a silicone structure (hydrophobic portion) and a hydrophilic portion in the molecule, and examples of such surfactants include silicone-based surfactants modified with a polyether group or a polyglycerin group. Of these, silicones modified with a polyether group, i.e., polyether-modified silicones, are preferred.

[0011] (A1) Polyether-modified silicone Preferably, the component (A) comprises a polyether-modified silicone represented by formula (a1) (A1) and having a mass average molecular weight of 30,000 or more. [ka] [In the formula, A is a methyl group, a phenyl group, and a group represented by the general formula: -C3H6O(C2H4O) p (C3H6O) q R' (In the formula, R' is a group selected from the group consisting of a hydrogen atom, an acyl group, and an alkyl group having 1 to 4 carbon atoms; p is an integer from 5 to 50; q is an integer from 5 to 50; The repeating units (C2H4O) and (C3H6O) may be arranged randomly or in blocks. is a group selected from the group consisting of polyoxyalkylene groups represented by R is a methyl group or a phenyl group; m is an integer from 50 to 1000; n is an integer from 1 to 40; The repeating units (SiRO) and (SiRAO) may be arranged randomly or in blocks, The content of polyoxyalkylene groups in the polyether-modified silicone is 40% by weight or more.]

[0012] The molecular weight of such polyether-modified silicone is not necessarily limited, but a polyether-modified silicone having a mass average molecular weight of 30,000 or more is preferable. The (A1) component is preferably PEG / PPG-19 / 19 dimethicone.

[0013] (A2) Polyether-modified silicone The component (A) may be a polyether-modified silicone (A2) that is different from the component (A1), and is preferably a combination of the component (A1) and the component (A2). The component (A2) is Poly(oxyethylene-oxypropylene) methylpolysiloxane copolymer, Polyoxyethylene methylpolysiloxane copolymer, Silicone chain branched methylpolysiloxane copolymer, Alkyl chain branched polyoxyethylene methylpolysiloxane copolymer, Alkyl-silicone-chain branched polyoxyethylene methylpolysiloxane copolymer, Crosslinked polyoxyethylene methylpolysiloxane, Alkyl-containing crosslinked polyoxyethylene methylpolysiloxane etc. In addition, examples of polyglycerin-modified silicones modified with polyglycerin groups include: Branched polyglycerin modified silicone, Cross-linked polyglycerin-modified silicone, Alkyl group-containing cross-linked polyglycerin-modified silicone, Branched alkyl group type polyglycerin modified silicone etc.

[0014] As a more specific example, PEG-9 Polydimethylsiloxyethyl Dimethicone, Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone, Cetyl PEG / PPG-10 / 1 Dimethicone, PEG-9 Methyl Ether Dimethicone, PEG-10 Dimethicone, PEG-3 Dimethicone and the like, and preferably PEG-9 polydimethylsiloxyethyl dimethicone.

[0015] The blending amount of component (A) is preferably 0.1 to 10 mass %, more preferably 0.2 to 8 mass %, and even more preferably 0.3 to 6 mass %, relative to the total amount of the cosmetic. The blending amount of (A1) is preferably from 0.05 to 8 mass %, more preferably from 0.1 to 6 mass %, relative to the total amount of the cosmetic. The blending amount of (A2) is preferably from 0.05 to 8 mass %, more preferably from 0.1 to 6 mass %, relative to the total amount of the cosmetic.

[0016] (B) Oil content The cosmetic preparation according to the present invention comprises (B) an oil component. Examples of the component (B) include silicone oils, polar oils, and non-polar oils. Note that in the present invention, silicone oils are not included in the polar oils or non-polar oils.

[0017] Component (B) preferably comprises a silicone oil. Examples of silicone oils include dimethicone, methylphenylpolysiloxane, diphenyldimethicone, diphenylsiloxyphenyltrimethicone, and trimethylpentaphenyltrisiloxane. One or more types of silicone oil may be blended in. The blending amount of silicone oil is preferably 2 to 40 mass %, more preferably 3 to 35 mass %, based on the total amount of the cosmetic.

[0018] The component (B) preferably contains a polar oil. Here, polar oil refers to an oil having a polar group, i.e., a hydrophilic group. This polar oil can be arbitrarily selected from those usually used in the fields of cosmetics, pharmaceuticals, food, etc., depending on the function required of the cosmetic. Of these, polar oils having an IOB value of 0.05 to 0.80 are preferred. The IOB value is an abbreviation for Inorganic / Organic Balance, and is a value that represents the ratio of inorganic value to organic value, and is an index of the degree of polarity of an organic compound. Specifically, the IOB value is IOB value = inorganic value / organic value Here, the "inorganic value" and "organic value" are set according to the various atoms or functional groups, for example, the "organic value" for one carbon atom in a molecule is 20, and the "inorganic value" for one hydroxyl group in the molecule is 100, and the IOB value of an organic compound can be calculated by integrating the "inorganic value" and "organic value" of all atoms and functional groups in the organic compound.

[0019] Examples of polar oils include ester oils, higher fatty acids, higher alcohols, and waxes. Among these, ester oils are preferably used. Among polar oils, those with high ultraviolet absorbing effects are generally called ultraviolet absorbents, and can be used to impart the function of protecting the skin from ultraviolet rays to the cosmetic product according to the present invention.

[0020] Examples of ester oils include tripropylene glycol dineopentanoate, isononyl isononanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, cetyl ethylhexanoate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid esters, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, tetra-2- Pentaerythrityl ethylhexanoate, triethylhexanoin (tri-2-ethylhexanoic acid glycerin), trioctanoic acid glycerin, triisopalmitic acid glycerin, triisostearate trimethylolpropane, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, trimyristate glycerin, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceryl amide, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

[0021] The ultraviolet absorbing agent is not particularly limited, but may be any ultraviolet absorbing agent generally used in cosmetics. For example, Benzoic acid derivatives such as ethyl para-aminobenzoate (PABA), ethyl-dihydroxypropyl PABA, ethylhexyl-dimethyl PABA, glyceryl PABA, PEG-25-PABA, and diethylaminohydroxybenzoylhexyl benzoate; Salicylic acid derivatives such as homosalate, ethylhexyl salicylate (octyl salicylate), dipropylene glycol salicylate, and TEA salicylate; Cinnamic acid derivatives such as octyl methoxycinnamate, ethylhexyl methoxycinnamate, isopropyl methoxycinnamate, isoamyl methoxycinnamate, cinnoxate, DEA methoxycinnamate, diisopropyl methylcinnamate, glyceryl-ethylhexanoate-dimethoxycinnamate, and di-(2-ethylhexyl)-4'-methoxybenzalmalonate; Dibenzoylmethane derivatives such as 4-tert-butyl-4'-methoxydibenzoylmethane, β,β-diphenylacrylate derivatives such as octocrylene, Benzophenone-1, benzophenone-2, benzophenone-3 or benzophenone derivatives such as oxybenzone, benzophenone-4, benzophenone-5, benzophenone-6, benzophenone-8, benzophenone-9, benzophenone-12, benzylidene camphor derivatives such as 3-benzylidene camphor, 4-methylbenzylidene camphor, benzylidene camphorsulfonic acid, benzalkonium camphor methosulfate, terephthalide discamphorsulfonic acid, and polyacrylamidomethyl benzylidene camphor; Phenylbenzimidazole derivatives such as phenylbenzimidazole sulfonic acid and disodium phenyldibenzimidazole tetrasulfonate; triazine derivatives such as bisethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone (e.g., "Ubinal T150"; BASF), diethylhexylbutamido triazone, 2,4,6-tris(diisobutyl-4'-aminobenzalmalonate)-s-triazine, and 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine; phenylbenzotriazole derivatives such as drometrizole trisiloxane and methylene bis(benzotriazolyltetramethylbutylphenol); anthranil derivatives such as menthyl anthranilate; imidazoline derivatives such as ethylhexyl dimethoxybenzylidene dioxoimidazoline propionate; benzalmalonate derivatives, such as polyorganosiloxanes having benzalmalonate functional groups; 4,4-Diarylbutadiene derivatives such as 1,1-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene etc.

[0022] One or more polar oils can be blended in. The blending amount of the polar oil is preferably 1 to 20 mass %, more preferably 2 to 18 mass %, based on the total amount of the cosmetic.

[0023] The component (B) may be one or more kinds blended together. The blending amount of the component (B) is preferably 5 to 45 mass %, and more preferably 7 to 40 mass %.

[0024] (C)Water The cosmetic preparation according to the present invention comprises (C) water. The composition further comprises water in addition to the above-mentioned components. As the water, water used in cosmetics, quasi-drugs, etc. can be used, and for example, purified water, ion-exchanged water, tap water, etc. can be used.

[0025] In the cosmetic according to the present invention, the ratio of the aqueous phase based on the total weight of the cosmetic is 50 to 60% by weight, and preferably 52 to 58% by weight. In the present invention, water constitutes such an aqueous phase, which is composed of water and water-soluble components other than water, such as lower alcohols. Therefore, the content of water is preferably 20% by weight or more, more preferably 25 to 55% by weight, and even more preferably 30 to 50% by weight, based on the total weight of the cosmetic.

[0026] (D) Oil-soluble film forming agent The cosmetic according to the present invention preferably further comprises (D) an oil-soluble film-forming agent. The component (D) is contained in the oil phase in the cosmetic, and forms a film that covers the skin after the cosmetic is applied to the skin, thereby exerting an effect of maintaining the cosmetic on the skin, and thus improving the so-called cosmetic durability. Furthermore, the temporal stability in the cosmetic can be further improved.

[0027] There are no particular limitations on the component (D) as long as it is one that is normally used in cosmetics. Specific examples include: Trimethylsiloxysilicate, Dimethylaminomethacrylate quaternary salt, Vinylpyrrolidone-methacrylic acid-N,N-dimethyl-ethylantinioethyl salt copolymer, Silicone / polyether polyurethane resin, (Methacryloyloxyethyl carboxybetaine / methacrylalkyl) copolymer, dextrin, (vinylpyrrolidone / VA) copolymer, ammonium alkyl acrylate copolymer, Polyvinyl alcohol, Polyethyl acrylate, (alkyl acrylate / octylacrylamide) copolymer, (acrylates / propyl trimethicone methacrylate) copolymer, Polyvinyl acetate, (acrylates / dimethicone) copolymer, 3-[tris(trimethylsiloxane)silyl]propylcarbamic acid pullulan, Polyether grafted acrylic silicone, and Fluoro-modified silicone resin etc.

[0028] Among these, silicone film-forming agents are preferred from the viewpoint of cosmetic durability. Examples of silicone film-forming agents include: (trimethylsiloxysilicate / dimethiconol) crosspolymer, Silicone resin gum, Trimethylsiloxysilicate, Siliconized pullulan, (acrylates / dimethicone) copolymer, Silsesquioxane series etc. can be preferably mentioned.

[0029] The component (D) may be one type or two or more types. The blending amount of the component (D) is preferably 0.5 to 20 mass %, more preferably 1 to 18 mass %, based on the total amount of the cosmetic.

[0030] In addition, it is known that thickeners and the like are generally used to improve dispersion stability. However, according to the studies of the present inventors, it has been found that the incorporation of an oil-gelling agent tends to impair the feeling of use. For this reason, it is preferable that the cosmetic composition according to the present invention does not contain an oil-gelling agent such as an organically modified clay mineral, or if it does contain such an agent, it is preferable that the amount of the oil-gelling agent is small. The amount of oil gelling agent blended is preferably 1% by mass or less, more preferably 0.1% by mass, and even more preferably substantially free of the cosmetic, relative to the total amount of the cosmetic. In one preferred embodiment, the cosmetic according to the present invention does not contain an oil gelling agent (0% by mass). An example of an organically modified clay mineral is a type of colloidal hydrous aluminum silicate having a three-layer structure, and includes a clay mineral represented by the following formula (b2) modified with a quaternary ammonium salt-type cationic surfactant. (X,Y) 2-3 (Si,Al)O10 (OH)2Z 1 / 3 nH2O (b2) During the ceremony, X is Al, Fe(III), Mn(III), or Cr(III); Y is Mg, Fe(II), Ni, Zn, or Li; and Z is K, Na, or Ca. Examples of organically modified minerals include: Disteardimonium Hectorite, Quaternium-18 Hectorite, stearalkonium hectorite, and Magnesium aluminum silicate treated with distearyl dimethyl ammonium chloride Examples include:

[0031] The cosmetic preparation according to the present invention may contain other ingredients in addition to those mentioned above, such as surfactants, fragrances, powders, moisturizers, lipophilic thickeners, lower alcohols (having less than 6 carbon atoms), antioxidants, anti-inflammatory agents, whitening agents, various extracts, activators, blood circulation promoters, antiseborrheic agents, anti-inflammatory agents, water-soluble film-forming agents, and amino acids or peptides.

[0032] The cosmetic preparation according to the present invention can be produced by any method, including a method of blending the components and stirring and mixing them, a method of mixing a water-soluble component to form an aqueous phase component, blending this with an oil phase component, and then dispersing the aqueous phase component. The cosmetic composition according to the present invention is a single-phase water-in-oil emulsion cosmetic composition.

[0033] The viscosity of the cosmetic according to the present invention is 200 to 6000 mPa·s, more preferably 300 to 5500 mPa·s, when measured at 30°C using a B-type rotational viscometer. Because of its low viscosity, it is preferable for it to be in a form that can be applied directly to the skin as various liquid cosmetic compositions. With a viscosity in this range, it is easy to spread when applied, and an excellent feeling of use can be obtained.

[0034] Examples of the cosmetic according to the present invention include skin care cosmetics (e.g., milky lotions, creams, beauty essences, packs, masks, etc.), makeup cosmetics (e.g., foundations, makeup bases, etc.), sunscreen cosmetics, ointments, etc., and sunscreen cosmetics are preferred. Note that these forms are merely examples, and the cosmetic according to the present invention is not limited to these forms. EXAMPLES

[0035] The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto. Unless otherwise specified, the content is expressed as % by mass relative to the total mass of the cosmetic.

[0036] Water-in-oil type emulsion cosmetics having the compositions shown in Tables 1 and 2 below were produced and evaluated for the following items. The results are also shown in Table 1. In the table, the viscosity is a value measured at 30°C using a Brookfield viscometer (12 rpm). [Table 1] [Table 2]

[0037] [Properties] The appearance of the above-prepared cosmetics was visually observed immediately after production to determine whether they were liquid or creamy. All of the cosmetics in the Examples immediately after production were in a single phase, with no separation observed.

[0038] [Stability over time] The cosmetic compositions prepared above were stored at room temperature to check whether their viscosity and state changed over time, and were evaluated according to the following criteria. A: Viscosity and condition were almost unchanged. B: The viscosity changed slightly, but no separation was observed. C: Viscosity changed and separation was confirmed.

[0039] [Usability] A panel of four experts evaluated the feel of each of the cosmetics prepared above when applied to the skin according to the following criteria. A: All four people answered that it was fresh. B: 2-3 people answered that it was moist, and the rest answered that it was sticky. C: Less than one person answered that it was moist, and the rest answered that it was sticky.

[0040] [Formulation Examples 1 and 2] Formulation examples 1 and 2 of the cosmetic composition of the present invention are shown in the following Tables 3 and 4. The values ​​in the tables indicate mass %. [Table 3] [Table 4]

Claims

1. (A) a silicone surfactant having an HLB of 5 or less, (B) oil, and (C) Water A water-in-oil emulsion cosmetic comprising: The proportion of the aqueous phase is 50 to 60% by weight, and A water-in-oil emulsion cosmetic having a viscosity of 200 to 6000 mPa·s as measured at 30° C. using a B-type rotational viscometer.

2. 2. The water-in-oil emulsion cosmetic according to claim 1, wherein component (A) is a polyether-modified silicone.

3. 3. The water-in-oil emulsion cosmetic according to claim 1, wherein the component (A) comprises a polyether-modified silicone represented by formula (a1) (A1) and having a mass average molecular weight of 30,000 or more. 【Chemistry 1】 [In the formula, A is a methyl group, a phenyl group, and a group represented by the general formula: -C ３ H ６ O(C ２ H ４ O) ｐ (C ３ H ６ O) ｑ R’ (In the formula, R' is a group selected from the group consisting of a hydrogen atom, an acyl group, and an alkyl group having 1 to 4 carbon atoms; p is an integer from 5 to 50; q is an integer from 5 to 50; Repeating unit (C ２ H ４ O) and (C ３ H ６ O) may be arranged randomly or in blocks. is a group selected from the group consisting of polyoxyalkylene groups represented by R is a methyl group or a phenyl group; m is an integer from 50 to 1000; n is an integer from 1 to 40; Repeating unit (SiR ２ (SiRAO) and (SiRAO) may be arranged randomly or in blocks, The content of polyoxyalkylene groups in the polyether-modified silicone is 40% by weight or more.]

4. 4. The water-in-oil emulsion cosmetic according to claim 3, wherein the component (A1) is PEG / PPG-19 / 19 dimethicone.

5. The component (A) is Component (A1), (A2) a polyether-modified silicone different from the component (A1); The water-in-oil emulsion cosmetic according to claim 3, which is a combination of

6. 3. The water-in-oil emulsion cosmetic according to claim 1, wherein component (C) comprises a silicone oil.

7. 3. The water-in-oil emulsion cosmetic according to claim 1, wherein the component (C) comprises a polar oil.

8. 8. The water-in-oil emulsion cosmetic according to claim 7, wherein the blending amount of the polar oil is 1 to 20 mass% based on the total amount of the water-in-oil emulsion cosmetic.

9. 3. The water-in-oil emulsion cosmetic according to claim 1 or 2, further comprising (D) an oil-soluble film-forming agent.

10. 10. The water-in-oil emulsion cosmetic according to claim 9, wherein the blending amount of component (D) is 0.5 to 20 mass% based on the total amount of the water-in-oil emulsion cosmetic.

11. 3. The water-in-oil emulsion cosmetic according to claim 1, which is a single-phase water-in-oil emulsion cosmetic.

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