Cosmetic

Abstract

To provide a cosmetic that exhibits superior water resistance and achieves a high ultraviolet protection effect.SOLUTION: A cosmetic includes: (A) an oil-soluble film-forming agent; (B) a water-soluble film-forming agent; (C) an oil-soluble thickener; (D) an ultraviolet absorber; (E) oil; and (F) water.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to cosmetics. Specifically, it relates to cosmetics containing a film-forming agent.

Background Art

[0002] Protecting the skin from the harm of ultraviolet rays is one of the important issues in skin care and body care, and various sunscreen cosmetics have been developed to minimize the adverse effects of ultraviolet rays on the skin. When the coating film of the sunscreen cosmetic applied to the skin comes into contact with moisture such as water or sweat, it is inevitable that the ultraviolet absorber and the ultraviolet scattering agent flow out from the coating film, resulting in a decrease in the ultraviolet protection effect. Therefore, various attempts have been made to improve the water resistance and coating film strength of the sunscreen cosmetic in order to prevent the outflow of the ultraviolet absorber and the ultraviolet scattering agent. For example, Patent Document 1 proposes that by blending a specific thickener into the cosmetic, the ultraviolet protection effect can be improved by contact with moisture.

[0003] Oil-in-water emulsified cosmetics are widely used as sunscreen cosmetics because they can provide a fresh feeling on use. However, oil-in-water emulsified cosmetics may be inferior in water resistance, and attempts have been made to improve the water resistance by blending a film-forming agent. On the other hand, when the film-forming agent is highly blended, the film feeling of the applied cosmetic becomes strong, and the usability tends to be impaired.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] The inventors have surprisingly found that a cosmetic containing a combination of a specific plurality of film-forming agents and an oil-soluble thickener can achieve a cosmetic with excellent water resistance and a high ultraviolet protection effect. The present invention is based on these findings.

[0006] According to the present invention, the following inventions are provided. [1] A cosmetic comprising (A) an oil-soluble film-forming agent, (B) a water-soluble film-forming agent, (C) an oil-soluble thickener, (D) an ultraviolet absorber, (E) an oil component, and (F) water. [2] The cosmetic according to [1], wherein the component (A) is selected from the group consisting of a silicone-based film-forming agent, a hydrocarbon-based film-forming agent, a pullulan derivative, a cellulose derivative, and a vinyl pyrrolidone derivative. [3] The cosmetic according to [1] or [2], wherein the (A) oil-soluble film-forming agent is a silicone-based film-forming agent. [4] The cosmetic according to any one of [1] to [3], wherein the (B) water-soluble film-forming agent is selected from the group consisting of a polyurethane-based film-forming agent, a polyvinyl-based film-forming agent, a polyacrylic acid-based film-forming agent, a starch-based film-forming agent, and fine cellulose fibers. [5] The cosmetic according to any one of [1] to [4], wherein the (B) water-soluble film-forming agent is a polyurethane-based film-forming agent or a polyvinyl-based film-forming agent. [6] The cosmetic according to any one of [1] to [5], further comprising (G) a powder. [7] The cosmetic according to [6], wherein the (G) powder is selected from the group consisting of talc, kaolin, mica, vermiculite, magnesium carbonate, calcium carbonate, anhydrous silicic acid, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate, calcined gypsum, calcium phosphate, fluorapatite, hydroxyapatite, cellulose, starch, ceramic powder, and metal soap. [8] The cosmetic according to any one of [1] to [7], wherein the blending amount of the (A) oil-soluble film-forming agent is 0.01 to 8% by mass based on the total amount of the cosmetic. [9] The cosmetic according to any one of [1] to [8], wherein the blending amount of the water-soluble film-forming agent is 0.01 to 8% by mass based on the total amount of the cosmetic.

[10] The cosmetic according to any one of [1] to [9], wherein the ratio ((A) / (B)) of the blending amount of the oil-soluble film-forming agent (A) to the blending amount of the water-soluble film-forming agent (B) is 0.01 to 80 on a mass basis.

[11] The cosmetic according to any one of [1] to

[10] , wherein the blending amount of the oil-soluble thickener (C) is 0.1 to 15% by mass based on the total amount of the cosmetic.

[12] The cosmetic according to any one of [1] to

[11] , which is an oil-in-water type emulsified cosmetic.

[0007] According to the present invention, it is possible to provide a cosmetic having excellent water resistance and achieving a high ultraviolet ray protection effect. Furthermore, the cosmetic according to the present invention can suppress stickiness and film feeling after application, and has excellent usability. Detailed description of the invention

[0008] The present invention relates to a cosmetic comprising (A) an oil-soluble film-forming agent, (B) a water-soluble film-forming agent, (C) an oil-soluble thickener, (D) an ultraviolet absorber, (E) an oil component, and (F) water.

[0009] (A) Oil-soluble film-forming agent The cosmetic according to the present invention comprises (A) an oil-soluble film-forming agent (hereinafter sometimes referred to as component (A). The same applies to other components.). Component (A) is not particularly limited as long as it can be blended in the cosmetic. For example, it is selected from the group consisting of silicone-based film-forming agents, hydrocarbon-based film-forming agents, pullulan derivatives, cellulose derivatives, and vinylpyrrolidone derivatives, and preferably a silicone-based film-forming agent.

[0010] Examples of silicone-based film-forming agents include silicone resins, amino-modified silicone resins, fluorine-modified silicone resins, silicone resin gums, etc. Specifically, trimethylsiloxysilicic acid, aminopropyldimethylsilicone, (trimethylsiloxysilicic acid / dimethylconol) copolymer, trifluoroalkyldimethyltrimethylsiloxysilicic acid, polymethylsilsesquioxane, (alkyl acrylate / dimethylsilicone) copolymer, (acrylates / stearyl acrylate / dimethyl methacrylate) copolymer, (acrylic acid / stearyl methacrylate / dimethyl methacrylate) copolymer, trifluoroalkyldimethyltrimethylsiloxysilicic acid, tri(trimethylsiloxy)silylpropylcarbamic acid pullulan, aminopropyldimethylsilicone, etc. are included.

[0011] (A) component can be blended with one or more than two kinds. The blending amount of (A) component is preferably 0.01 - 8% by mass, more preferably 0.1 - 5% by mass, still more preferably 0.2 - 3% by mass, and even more preferably 0.3 - 1.5% by mass based on the total amount of the cosmetic.

[0012] (B) Water-soluble film-forming agent The cosmetic according to the present invention comprises (B) water-soluble film-forming agent. (B) component is not particularly limited as long as it can be blended into the cosmetic. For example, it is selected from the group consisting of polyurethane-based film-forming agents, polyvinyl-based film-forming agents, polyacrylic acid-based film-forming agents, starch-based film-forming agents, and fine cellulose fibers, and preferably a polyacrylic acid-based film-forming agent or a polyvinyl-based film-forming agent.

[0013] Examples of polyacrylic acid-based film-forming agents include alkyl acrylate copolymers, polyethyl acrylate, acrylate copolymers, etc. Examples of polyurethane-based film-forming agents include polyurethane-10, polyurethane-24, (polyurethane-24 / methyl methacrylate) copolymer, etc. Examples of polyvinyl-based film-forming agents include polyvinyl alcohol, polyvinyl acetate, (eicosene / vinylpyrrolidone) copolymer, (vinylpyrrolidone / vinyl acetate (VA)) copolymer, and the like.

[0014] (Component (B) can be blended with one or more types. The blending amount of component (B) is preferably 0.01 to 8% by mass, more preferably 0.05 to 5% by mass, still more preferably 0.1 to 2% by mass, and even more preferably 0.1 to 1% by mass with respect to the total amount of the cosmetic.

[0015] In the present invention, it is one of the features to contain both component (A) and component (B). Thereby, while suppressing the decrease in usability felt when the blending amount of one film-forming agent is increased, the water resistance of the coating film can be improved. In particular, in the case of a cosmetic containing component (A) in the oil phase and component (B) in the aqueous phase, it is considered that the uniformity of the film on the coating film is improved and the water resistance is improved. On the other hand, since the film-forming agent blended in the internal phase does not directly touch the skin, it is considered that a decrease in usability can also be suppressed. The ratio ((A) / (B)) of the blending amount of component (A) (oil-soluble film-forming agent) to the blending amount of component (B) (water-soluble film-forming agent) is preferably 0.01 to 80, more preferably 0.1 to 15, and still more preferably 0.2 to 5 on a mass basis.

[0016] (C) Oil-soluble thickener The cosmetic according to the present invention comprises an (C) oil-soluble thickener. By containing component (C), it becomes easy to adjust the viscosity of the cosmetic, and the uniformity of the coating film of the cosmetic can be improved. As a result, it is considered that the ultraviolet ray protection effect can be improved. Examples of component (C) include dextrin fatty acid ester, sucrose fatty acid ester, fatty acid or its salt, glyceryl fatty acid ester, and amino acid-based gelling agent. Preferably, it is dextrin fatty acid ester or glyceryl fatty acid ester.

[0017] Dextrin fatty acid ester is an ester of dextrin or reduced dextrin and a higher fatty acid, and there is no particular limitation as long as it is generally used in cosmetics and can be used. It is preferable to use dextrin or reduced dextrin having an average sugar polymerization degree of 3 to 100. Further, as the constituent fatty acid of the dextrin fatty acid ester, it is preferable to use a saturated fatty acid having 8 to 22 carbon atoms. Specifically, dextrin palmitate, dextrin oleate, dextrin stearate, dextrin myristate, (palmitic acid / ethylhexanoic acid) dextrin, etc. can be mentioned.

[0018] For sucrose fatty acid ester, it is preferable to use those in which the fatty acid is linear or branched, saturated or unsaturated, and has 12 to 22 carbon atoms. Specifically, sucrose caprylate, sucrose capric acid ester, sucrose laurate, sucrose myristate, sucrose palmitate, sucrose stearate, sucrose oleate, sucrose erucate, etc. can be mentioned.

[0019] As the fatty acid, those that are solid at normal temperature can be used. For example, myristic acid, palmitic acid, stearic acid, behenic acid, etc. can be mentioned. As salts of fatty acids, calcium salts, magnesium salts, aluminum salts, etc. of these can be mentioned.

[0020] Glyceryl fatty acid ester is an esterification reaction product obtained by reacting glycerin, a dibasic acid having 18 to 28 carbon atoms, and a fatty acid having 8 to 28 carbon atoms (excluding dibasic acids), and there is no particular limitation as long as it is generally used in cosmetics and can be used. Specifically, glyceryl (behenic acid / isostearic acid / eicosanedioic acid), glyceryl (behenic acid / eicosanedioic acid), polyglyceryl-10 (behenic acid / eicosanedioic acid), etc. can be mentioned.

[0021] Examples of amino acid - based gelling agents include dibutyl lauroyl glutamate, dibutyl ethylhexanoyl glutamate, polyamide - 8, polyamide - 3, dibutylamide N - lauroyl - L - glutamate, etc.

[0022] (C) component can be blended with one or more than one kind. The blending amount of (C) component is preferably 0.1 - 15% by mass, more preferably 0.2 - 10% by mass, and even more preferably 0.4 - 8% by mass based on the total amount of the cosmetic.

[0023] (D) Ultraviolet absorber The cosmetic according to the present invention comprises (D) ultraviolet absorber. (D) component can be the ones usually blended in sunscreen cosmetics. For example, organic ultraviolet absorbers such as ethylhexyl methoxycinnamate, octocrylene, 2 - hydroxy - 4 - methoxybenzophenone, dimethyldiethylbenzalmalonate, t - butylmethoxydibenzoylmethane, ethylhexyl triazone, diethylamino hydroxybenzoyl hexyl benzoate, bis - ethylhexyloxyphenol methoxyphenyl triazine, methylene bis - benzotriazolyl tetramethylbutylphenol, phenylbenzimidazole sulfonic acid, homosalate, ethylhexyl salicylate, droxmetrizole trisiloxane, terephthalylidene dicamphor sulfonic acid, etc. can be mentioned.

[0024] (D) component can be blended with one or more than one kind. The blending amount of (D) component is preferably 1 - 40% by mass, more preferably 3 - 30% by mass, and even more preferably 5 - 25% by mass based on the total amount of the cosmetic.

[0025] (E) Oil The cosmetic according to the present invention comprises (E) oil. (E) component includes, for example, silicone oil, hydrocarbon oil, ester oil, higher alcohols having 12 - 22 carbon atoms, fatty acids having 12 - 22 carbon atoms, etc. In the present invention, (D) component is not included in (E) component.

[0026] Examples of silicone oils include chain polysiloxanes (e.g., dimethicone, diphenylsiloxyphenyltrimethicone, diphenylpolysiloxane, etc.), cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.), silicone resins forming a three-dimensional network structure, silicone rubbers, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.), acrylic silicones, etc., and chain polysiloxanes are preferred.

[0027] Examples of hydrocarbon oils include liquid paraffin, liquid isoparaffins such as hydrogenated polyisobutene, heavy liquid isoparaffins, liquid ozokerite, squalane, pristane, squalene, volatile hydrocarbon oils (e.g., isododecane, isohexadecane, etc.).

[0028] Examples of ester oils include isononyl isononanoate, isotridecyl isononanoate, octyldodecyl myristate, isopropyl myristate, isocetyl myristate, alkyl benzoates (C12 - C15) such as alkyl benzoates, monoester oils such as isopropyl palmitate, ethylhexyl palmitate, 2-hexyldecyl palmitate, diester oils such as di-2-ethylhexyl sebacate, diisopropyl sebacate, diethylene glycol dicaprate, neopentyl glycol dicaprate, neopentyl glycol di-2-ethylhexanoate, distearyl malate, triester oils such as glyceryl tri-2-ethylhexanoate, glyceryl tri(caprylic acid / capric acid), etc.

[0029] Examples of higher alcohols having 12 to 22 carbon atoms include oleyl alcohol, 2-decyltetradecynol, dodecanol, isostearyl alcohol, octyldodecanol, etc. Examples of fatty acids having 12 to 22 carbon atoms include oleic acid, isostearic acid, linoleic acid, linolenic acid, and the like.

[0030] (E) component can be blended with one or more kinds. The blending amount of (E) component is preferably 1 to 40% by mass, more preferably 2 to 30% by mass, and still more preferably 3 to 25% by mass based on the total amount of the cosmetic.

[0031] (F) Water The cosmetic according to the present invention contains (F) water. As the water, water used in cosmetics, quasi-drugs, etc. can be used, for example, purified water, ion-exchanged water, tap water, etc. can be used. The blending amount of water is preferably 5 to 80% by mass, more preferably 10 to 60% by mass based on the total amount of the cosmetic according to the present invention.

[0032] (G) Powder The cosmetic according to the present invention can further contain (G) powder. The (G) component is not particularly limited as long as it can be blended as a component for preparing usability in cosmetics. In this specification, the (G) component does not include titanium oxide, iron oxide, etc. used as coloring pigments. By containing the (G) component, the usability of the cosmetic according to the present invention can be further improved. For example, the stickiness and the film feeling caused by the blending of the film-forming agent are suppressed.

[0033] Component (G) is selected from the group consisting of, for example, talc, kaolin, mica, vermiculite, magnesium carbonate, calcium carbonate, anhydrous silicic acid, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate, calcined gypsum, calcium phosphate, fluorapatite, hydroxyapatite, cellulose, starch, ceramic powder, and metal soap. Preferably, it is silica, cellulose, or aluminum octenyl succinate starch, and more preferably silica.

[0034] One or more kinds of Component (G) can be blended. The blending amount of Component (G) is preferably 0.1 to 10% by mass, more preferably 0.1 to 8% by mass, and even more preferably 0.5 to 6% by mass based on the total amount of the cosmetic.

[0035] The cosmetic according to the present invention may contain other optional components as long as the effects of the present invention are not inhibited. As other optional components, for example, humectants, alcohols, water-soluble thickeners, surfactants, pigments, dispersants, antioxidants, preservatives, drugs, etc. can be appropriately blended as needed.

[0036] The dosage form of the cosmetic according to the present invention is not particularly limited. For example, oil-in-water type emulsified cosmetics and water-in-oil type emulsified cosmetics can be mentioned, and preferably, it is an oil-in-water type emulsified cosmetic. As specific uses, it can be used as skin care cosmetics such as lotion, gel, emulsion, cream, pack, etc., makeup cosmetics such as makeup base, foundation, etc., base cosmetics, and sunscreen cosmetics. Since the cosmetic according to the present invention has excellent water resistance and can achieve a high ultraviolet protection effect, it is preferably a sunscreen cosmetic.

Examples

[0037] The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the content is shown as mass% based on the total amount.

[0038] [Examples 1 - 8 and Comparative Examples 1 - 6] Using the formulations shown in Table 1, oil-in-water emulsified cosmetics of Examples 1 - 8 and Comparative Examples 1 - 6 were prepared. The numerical values in the table indicate mass %.

Table 1

[0039] [UV Protection Effect] The cosmetics prepared above were dropped onto a measurement plate (S plate) (5×5 cm V-grooved PMMA plate, SPFMASTER-PA01) in an amount of 2 mg / cm 2 , applied with a finger for 60 seconds, and after drying for 15 minutes, the absorbance of the formed coating film was measured using a U-3500 type recording spectrophotometer manufactured by Hitachi, Ltd. The one without the cosmetic applied on the above measurement plate was used as a control, and the absorbance (Abs) was calculated by the following formula. Abs = -log(T / To) T: Transmittance of the sample, To: Transmittance of the control Based on the integrated Abs value of Comparative Example 1, the Abs ratio from the integrated Abs value of each cosmetic: Abs ratio = (Integrated Abs value of each cosmetic) / (Integrated Abs value of Comparative Example 1) was calculated. The obtained numerical values were described in Table 1, and their UV protection effects were evaluated according to the following criteria. A: 1.6 ≤ Abs ratio B: 1.4 ≤ Abs ratio < 1.6 C: 1.2 ≤ Abs ratio < 1.4 D: 1.0 ≤ Abs ratio < 1.2

[0040] [Water Resistance Effect] The absorbance of the coating film of each cosmetic was measured in the same manner as above. Then, after immersing the coating film in running water for 30 minutes, the absorbance was measured, and the integrated Abs value was calculated. The substrate residual rate (%) of each cosmetic was calculated by the following formula. Substrate residual rate (%) = Integrated Abs value after water bath / Integrated Abs value before water bath × 100 Based on the substrate residual rate of Comparative Example 1, the residual ratio from the substrate residual rate of each cosmetic: Residual ratio = (Substrate residual rate of each cosmetic material) / (Substrate residual rate of Comparative Example 1) It was calculated. The obtained numerical values are shown in Table 1, and their water resistance was evaluated according to the following criteria. A: 2.8 ≤ Residual ratio B: 2.4 ≤ Residual ratio < 2.8 C: 1.6 ≤ Residual ratio < 2.4 D: 1.0 ≤ Residual ratio < 1.6

[0041] [Usability evaluation] The cosmetic materials prepared above were applied to the skin of a professional panel, and the usability immediately after application was evaluated according to the following criteria from the viewpoints of stickiness and film feeling. The obtained results are as shown in Table 1. (Stickiness) A: No stickiness is felt. B: Slight stickiness is felt. C: A little stickiness is felt. D: Stickiness is felt. (Film feeling) A: No film feeling is felt. B: Slight film feeling is felt. C: A little film feeling is felt. D: Film feeling is felt.

Claims

1. (A) an oil-soluble coating agent, (B) a water-soluble coating agent; (C) an oil-soluble thickener, (D) an ultraviolet absorber, (E) oil, and (F) Water A cosmetic comprising:

2. 2. The cosmetic preparation according to claim 1, wherein the component (A) is selected from the group consisting of silicone-based coating agents, hydrocarbon-based coating agents, pullulan derivatives, cellulose derivatives, and vinylpyrrolidone derivatives.

3. 3. The cosmetic preparation according to claim 1, wherein the oil-soluble coating agent (A) is a silicone-based coating agent.

4. 3. The cosmetic preparation according to claim 1, wherein the water-soluble coating agent (B) is selected from the group consisting of polyurethane-based coating agents, polyvinyl-based coating agents, polyacrylic acid-based coating agents, starch-based coating agents, and fine cellulose fibers.

5. 3. The cosmetic preparation according to claim 1, wherein the water-soluble coating agent (B) is a polyurethane-based coating agent or a polyvinyl-based coating agent.

6. The cosmetic preparation according to claim 1 or 2, further comprising (G) a powder.

7. The cosmetic preparation according to claim 6, wherein the powder (G) is selected from the group consisting of talc, kaolin, mica, vermiculite, magnesium carbonate, calcium carbonate, anhydrous silicic acid, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate, calcined gypsum, calcium phosphate, fluorapatite, hydroxyapatite, cellulose, starch, ceramic powder, and metal soap.

8. 3. The cosmetic according to claim 1, wherein the blending amount of the oil-soluble coating agent (A) is 0.01 to 8 mass % relative to the total amount of the cosmetic.

9. 3. The cosmetic according to claim 1, wherein the blending amount of the water-soluble coating agent (B) is 0.01 to 8 mass % relative to the total amount of the cosmetic.

10. 3. The cosmetic preparation according to claim 1, wherein the ratio ((A) / (B)) of the amount of the oil-soluble coating agent (A) to the amount of the water-soluble coating agent (B) is 0.01 to 80 by mass.

11. 3. The cosmetic according to claim 1, wherein the blending amount of the oil-soluble thickener (C) is 0.1 to 15 mass % relative to the total amount of the cosmetic.

12. The cosmetic according to claim 1 or 2, which is an oil-in-water emulsion cosmetic.

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