Cosmetics

Abstract

To provide a cosmetic preparation having the innovative, unprecedented property in which the ultraviolet protection effects do not decrease, but conversely increase, due to contact with moisture such as water or perspiration or application of heat in the usage environment.SOLUTION: A cosmetic preparation of the present invention contains: (A) an ultraviolet protectant; (B) at least one selected from (i) alkylene oxide derivatives and (ii) polyhydric alcohols, which is water-soluble and has an IOB of 5.0 or lower; and (C) an oil phase thickener, wherein the mass ratio of component (A) / component (B) is 20 or lower, and the (B) (i) alkylene oxide derivatives are polyoxyalkylene / polyoxyethylene copolymer dialkyl ethers represented by the following formula (I): R1O-[(AO)m(EO)n]-R2, wherein R1 and R2 each independently denote a hydrogen atom or a hydrocarbon group having one to four carbon atoms, AO denotes an oxyalkylene group having three or four carbon atoms, EO denotes an oxyethylene group, 1≤m≤70, 1≤n≤70, and m+n≤40).SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a cosmetic composition having a sunscreen effect. More specifically, the present invention relates to a cosmetic composition having an unprecedented property of being excellent in both water resistance and heat resistance, and having an improved ultraviolet protection effect upon contact with moisture such as water or sweat, or upon heating, compared to immediately after application. [Background technology]

[0002] Protecting the skin from the harmful effects of ultraviolet rays is one of the important issues in skin care and body care, and various UV care cosmetics have been developed to minimize the adverse effects of ultraviolet rays on the skin. Sunscreen cosmetics, which are one type of UV care cosmetics, contain ultraviolet absorbing agents and ultraviolet scattering agents to block UVA and UVB rays from reaching the skin, thereby protecting the skin from the harmful effects of ultraviolet rays (Non-Patent Document 1). Recently, it has been considered important to protect the skin from ultraviolet rays not only in the harsh ultraviolet conditions of outdoor activities such as swimming in pools and the sea in summer and skiing in winter, but also in everyday life, and there is a demand for ordinary skin care cosmetics that have ultraviolet protection effects.

[0003] The UV protection effect of sunscreen products is achieved by the UV protection agents contained in them, namely UV absorbers and UV scattering agents. However, some UV absorbers lose their UV absorption ability when exposed to light (photodegradation), and UV absorbers and UV scattering agents can flow out from the skin surface when they come into contact with moisture.

[0004] Many ideas have been proposed to suppress photodegradation of the UV protection effect (Patent Document 1), and in terms of water resistance, cosmetics have been developed with innovative properties in which the UV protection effect is not reduced even when the cosmetics come into contact with water, but rather is improved (Patent Document 2).

[0005] On the other hand, like light and moisture, the decrease in UV protection effect due to heat cannot be ignored. In general, when heat is applied to a cosmetic applied to the skin, the UV absorber and other components contained in the cosmetic deteriorate, and the UV protection effect decreases. However, regarding heat, for example, although there are examples that have examined the effect of heat on the emulsion stability of an emulsion cosmetic containing a cosmetic (Patent Document 3), the change in UV protection effect due to heat has not been studied to date, and no cosmetic intended to suppress the decrease in UV protection effect due to heat has been proposed. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2010-150172 A [Patent Document 2] WO2016 / 068300 publication [Patent Document 3] Patent No. 4397286 [Non-patent literature]

[0007] [Non-Patent Document 1] "New Cosmetics Science", 2nd edition, edited by Takeo Mitsui, published by Nanzando in 2001, pp. 497-504 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0008] The present invention is aimed at providing a cosmetic having unprecedented, innovative properties, which was discovered in the course of research into a cosmetic having a strong ultraviolet protection effect, in that the ultraviolet protection effect is not reduced by contact with moisture such as water or sweat, or by heat applied in the usage environment, but is actually improved. [Means for solving the problem]

[0009] Means for Solving the Problems The present inventors conducted intensive research to solve the above-mentioned problems and discovered that a cosmetic preparation having the above-mentioned desired novel properties can be obtained by blending an ultraviolet protection agent, a specific alkylene oxide derivative or a polyhydric alcohol, and a specific oil phase thickener in a specific ratio, thereby completing the present invention.

[0010] That is, the present invention provides: (A) UV protection agent, (B) one or more selected from (i) alkylene oxide derivatives and (ii) polyhydric alcohols, each of which is water-soluble and has an IOB of 5.0 or less; and (C) an oil phase thickener, The mass ratio of component (A) / component (B) is 20 or less, and The (B)(i) alkylene oxide derivative has the following formula (I): R 1 O-[(AO) m (EO) n ]-R 2 (I) (In the formula, R 1 and R 2 each independently represents a hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, AO represents an oxyalkylene group having 3 to 4 carbon atoms, and EO represents an oxyethylene group, and 1≦m≦70, 1≦n≦70, and m+n≦40. The present invention provides a cosmetic composition comprising a polyoxyalkylene-polyoxyethylene copolymer dialkyl ether represented by the formula: Effect of the Invention

[0011] The cosmetic of the present invention exhibits a significantly improved UV protection effect after contact with water, sweat, etc., and after heat is applied during actual use, rather than immediately after application of the cosmetic. In other words, the cosmetic of the present invention is an innovative cosmetic having properties contrary to conventional wisdom, in that the UV protection effect is actually improved by moisture and heat, which were believed to cause deterioration of the effect of conventional cosmetics. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The present invention will be described in detail below. The cosmetic of the present invention essentially contains (A) an ultraviolet protection agent, (B) a specific alkylene oxide derivative or polyhydric alcohol, and (C) an oil phase thickener. Each component constituting the cosmetic of the present invention will be described in detail below.

[0013] <(A) UV protection agent (UV absorbing agent and / or UV scattering agent)> The (A) ultraviolet protection agent (hereinafter, sometimes simply referred to as "component (A)") blended in the cosmetic composition of the present invention means an ultraviolet absorbing agent and / or an ultraviolet scattering agent, and those that are typically blended in cosmetics can be used.

[0014] Examples of ultraviolet absorbents that can be used in the present invention include, but are not limited to, benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, β,β-diphenylacrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranil derivatives, imidazoline derivatives, benzalmalonate derivatives, 4,4-diarylbutadiene derivatives, etc. Specific examples and trade names are listed below, but are not limited to these.

[0015] Examples of benzoic acid derivatives include ethyl para-aminobenzoate (PABA), ethyl-dihydroxypropyl PABA, ethylhexyl-dimethyl PABA (e.g., "Escarol 507"; ISP), glyceryl PABA, PEG-25-PABA (e.g., "Uvinal P25"; BASF), and diethylaminohydroxybenzoylhexylbenzoate (e.g., "Uvinal A Plus").

[0016] Examples of salicylic acid derivatives include homosalate (e.g., "Eusolex HMS"; Rona / EM Industries), ethylhexyl salicylate or octyl salicylate (e.g., "NeoHeliopan OS"; Herman & Reimer), dipropylene glycol salicylate (e.g., "Dipsal"; Skel), and TEA salicylate (e.g., "NeoHeliopan TS"; Herman & Reimer).

[0017] Examples of cinnamic acid derivatives include octyl methoxycinnamate or ethylhexyl methoxycinnamate (e.g., Parsol MCX; DSM), isopropyl methoxycinnamate, isoamyl methoxycinnamate (e.g., Neo-Heliopan E1000; Herman & Reimer), cinnoxate, DEA methoxycinnamate, diisopropyl methylcinnamate, glyceryl-ethylhexanoate-dimethoxycinnamate, and di-(2-ethylhexyl)-4'-methoxybenzalmalonate.

[0018] An example of a dibenzoylmethane derivative is 4-tert-butyl-4'-methoxydibenzoylmethane (eg, "Parsol 1789"; DSM Ltd.).

[0019] Examples of β,β-diphenylacrylate derivatives include octocrylene (eg, "Uvinal N539T"; BASF).

[0020] Examples of benzophenone derivatives include benzophenone-1 (e.g., "Uvinal 400"; BASF), benzophenone-2 (e.g., "Uvinal D50"; BASF), benzophenone-3 or oxybenzone (e.g., "Uvinal M40"; BASF), benzophenone-4 (e.g., "Uvinal MS40"; BASF), benzophenone-5, benzophenone-6 (e.g., "Helisorb 11"; Norquay), benzophenone-8 (e.g., "Spectra-Sorb UV-24"; American Cyanamid), benzophenone-9 (e.g., "Uvinal DS-49"; BASF), and benzophenone-12.

[0021] Examples of benzylidene camphor derivatives include 3-benzylidene camphor (e.g., "Mexoryl SD"; Shimex), 4-methylbenzylidene camphor, benzylidene camphorsulfonic acid (e.g., "Mexoryl SL"; Shimex), camphor benzalkonium methosulfate (e.g., "Mexoryl SO"; Shimex), terephthalidenedicamphorsulfonic acid (e.g., "Mexoryl SX"; Shimex), and polyacrylamide methylbenzylidene camphor (e.g., "Mexoryl SW"; Shimex).

[0022] Examples of phenylbenzimidazole derivatives include phenylbenzimidazole sulfonic acid (e.g., "Eutholex 232"; Merck), and disodium phenyldibenzimidazole tetrasulfonate (e.g., "Neo-Heliopan AP"; Herman & Reimer).

[0023] Examples of triazine derivatives include bisethylhexyloxyphenol methoxyphenyl triazine (e.g., "Tinosorb S"; Ciba Specialty Chemicals), ethylhexyl triazone (e.g., "Uvinal T150"; BASF), diethylhexylbutamido triazone (e.g., "Uvasorb HEB"; Sigma 3 V), 2,4,6-tris(diisobutyl-4'-aminobenzalmalonate)-s-triazine, and 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine.

[0024] Examples of phenylbenzotriazole derivatives include drometrizole trisiloxane (e.g., "Silatrizole"; Rhodia-Chemie), methylene bis(benzotriazolyl tetramethylbutylphenol) (e.g., "Tinosorb M"; Ciba Specialty Chemicals), and the like.

[0025] Examples of anthranil derivatives include menthyl anthranilate (eg, "Neo Heliopan MA"; Herman & Reimer).

[0026] The imidazoline derivatives include ethylhexyldimethoxybenzylidene dioxoimidazoline propionate.

[0027] Examples of benzalmalonate derivatives include polyorganosiloxanes having benzalmalonate functional groups (for example, polysilicone-15; "Parsol SLX"; DSM Nutrition Japan).

[0028] An example of a 4,4-diarylbutadiene derivative is 1,1-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene.

[0029] Particularly preferred examples of ultraviolet absorbers include, but are not limited to, ethylhexyl methoxycinnamate, octocrylene, dimethicone diethyl benzal malonate, polysilicone-15, 4-tert-butyl-4'-methoxydibenzoylmethane (t-butyl methoxydibenzoylmethane), ethylhexyl triazone, diethylamino hydroxybenzoyl hexyl benzoate, bisethylhexyloxyphenol methoxyphenyl triazine, oxybenzone-3, methylene bisbenzotriazolyl tetramethyl butyl phenol, phenylbenzimidazole sulfonic acid, 3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor, homosalate, and ethylhexyl salicylate. Among these, when the (A) component contains at least octocrylene, a good ultraviolet protection improvement effect can be obtained.

[0030] However, when 4-tert-butyl-4'-methoxydibenzoylmethane is blended, the blending amount is preferably small. For example, it is preferable that the blending amount is less than 0.5% by mass based on the total amount of the cosmetic, or 10% by mass or less based on the total amount of the (A) component. This is because 4-tert-butyl-4'-methoxydibenzoylmethane tends to hinder the improvement of the UV protection effect by heating when the (B) alkylene oxide derivative or polyhydric alcohol and the (C) oil phase thickener are blended, so that the enhancement of the UV protection effect by heat is difficult to realize.

[0031] The ultraviolet scattering agent used in the present invention is not particularly limited, but specific examples include fine particle metal oxides such as zinc oxide, titanium oxide, iron oxide, cerium oxide, and tungsten oxide.

[0032] The ultraviolet scattering agent may be untreated or may be treated with various hydrophobic surface treatments, but preferably used is treated with hydrophobic surface treatments. Surface treatment agents that can be used include those commonly used in the field of cosmetics, such as dimethicone, silicones such as alkyl-modified silicones, alkoxysilanes such as octyltriethoxysilane, dextrin fatty acid esters such as dextrin palmitate, and fatty acids such as stearic acid.

[0033] The ultraviolet protection agent (A) in the present invention includes an embodiment consisting of only an ultraviolet absorbing agent, an embodiment consisting of only an ultraviolet scattering agent, and an embodiment containing both an ultraviolet absorbing agent and an ultraviolet scattering agent.

[0034] The blending amount of (A) ultraviolet protection agent is not particularly limited, but is usually 5% by mass or more, for example, 5 to 40% by mass, preferably 6 to 40% by mass, and more preferably 7 to 30% by mass, based on the total amount of the cosmetic. If the blending amount of (A) ultraviolet protection agent is less than 5% by mass, it is difficult to obtain a sufficient ultraviolet protection effect, and even if it is blended in more than 40% by mass, an increase in ultraviolet protection effect commensurate with the blending amount cannot be expected, and stability is deteriorated, which is not preferable.

[0035] <(B) Alkylene oxide derivative or polyhydric alcohol> The (B)(i) alkylene oxide derivative or (ii) polyhydric alcohol (hereinafter sometimes simply referred to as "component (B)") blended in the cosmetic of the present invention is often blended as a moisturizing agent in ordinary cosmetic preparations. In the present invention, by blending a specific alkylene oxide derivative or polyhydric alcohol, it is possible to significantly improve the UV protection effect, especially after heat is applied, compared to immediately after application of the cosmetic to the skin.

[0036] (B) (i) the alkylene oxide derivative or (ii) the polyhydric alcohol must both be water-soluble. If a non-water-soluble compound is used, the UV protection effect improvement effect tends to decrease upon heating. In the present invention, "water-soluble" means that the compound dissolves in water at 25°C at a concentration of 0.1% by mass or more.

[0037] In addition, the (B) (i) alkylene oxide derivative or (ii) polyhydric alcohol has an IOB of 5.0 or less, more preferably 3.0 or less, and even more preferably 2.5 or less. If the IOB value is too high, the effect of improving the ultraviolet protection ability by heat may not be sufficiently obtained. On the other hand, the lower limit of the IOB value is not particularly limited, but is preferably 0.5 or more, and even more preferably 0.8 or more.

[0038] Here, IOB is an abbreviation of Inorganic / Organic Balance, which is a value that indicates the ratio of inorganic value to organic value, and is an index that indicates the degree of polarity of an organic compound. Specifically, the IOB value is expressed as IOB value = inorganic value / organic value. For each of the "inorganic value" and "organic value", "inorganic value" is set according to various atoms or functional groups, for example, the "organic value" is 20 for one carbon atom in a molecule, and the "inorganic value" is 100 for one hydroxyl group, and the "inorganic value" and "organic value" of each atom and functional group in an organic compound are added up, and the IOB value of the organic compound can be calculated (for example, see "Organic Conceptual Diagram - Basics and Applications" by Yoshio Koda, pp. 11-17, Sankyo Publishing, 1984).

[0039] Furthermore, (B)(i) the alkylene oxide derivative or (ii) the polyhydric alcohol preferably has an ether bond. By having an ether bond, it is believed that the compound is more soluble in water and can also be soluble in oil than compounds not having an ether bond.

[0040] The (i) alkylene oxide derivative that can be used in the present invention includes a polyoxyalkylene-polyoxyethylene copolymer dialkyl ether represented by the following (I). R 1 O-[(AO) m (EO) n ]-R 2 (I) In the above formula, AO represents an oxyalkylene group having 3 to 4 carbon atoms. Specific examples include an oxypropylene group, an oxybutylene group, an oxyisobutylene group, an oxytrimethylene group, and an oxytetramethylene group. Preferred are an oxypropylene group and an oxybutylene group. EO represents an oxyethylene group.

[0041] R 1 and R 2 each independently represents a hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom. Examples of the hydrocarbon group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, and a tert-butyl group. A methyl group or an ethyl group is preferable. R in one molecule 1 and R 2 may each be the same type of hydrocarbon group, may contain a mixture of hydrocarbon groups and hydrogen atoms, or may contain a mixture of multiple hydrocarbon groups with different numbers of carbon atoms. 1 and R 2 For each of the above, the ratio of hydrocarbon groups to hydrogen atoms is preferably such that the ratio (Y / X) of the number of hydrogen atoms (Y) to the number of hydrocarbon groups (X) is 0.15 or less, and more preferably 0.06 or less.

[0042] m is the average number of moles of AO added and is 1≦m≦70, preferably 2≦m≦20, and more preferably 2≦m≦10. n is the average number of moles of EO added and is 1≦n≦70, preferably 2≦n≦20, and more preferably 2≦n≦10. Furthermore, m+n is 40 or less, preferably 25 or less, and more preferably 20 or less. In particular, when m+n is 20 or less, a significantly excellent effect of improving ultraviolet protection power by heating can be obtained.

[0043] The order of addition of AO and EO is not particularly limited. AO and EO may be added in blocks to form a block copolymer, or may be added randomly to form a random copolymer. Block copolymers include not only two-stage blocks, but also copolymers containing three or more stages of blocks. Random copolymers are preferably used. The molecular weight of the polyoxyalkylene-polyoxyethylene copolymer dialkyl ether represented by the formula (I) is 100 to 10,000, preferably 150 to 5,000, further preferably 200 to 3,000, and even more preferably 300 to 2,000. The ratio of EO to the total of AO and EO in one molecule [EO / (AO+EO)] is preferably 20 to 80% by mass.

[0044] Specific examples of the polyoxyalkylene-polyoxyethylene copolymer dialkyl ether preferably used in the present invention include, but are not limited to, the following polyoxypropylene-polyoxyethylene copolymer dimethyl ether. PEG / PPG-9 / 2 Dimethyl Ether PEG / PPG-17 / 4 Dimethyl Ether PEG / PPG-14 / 7 Dimethyl Ether PEG / PPG-11 / 9 Dimethyl Ether PEG / PPG-55 / 28 Dimethyl Ether PEG / PPG-36 / 41 Dimethyl Ether PEG / PPG-6 / 3 Dimethyl Ether PEG / PPG-8 / 4 Dimethyl Ether PEG / PPG-6 / 11 dimethyl ether PEG / PPG-14 / 27 Dimethyl Ether

[0045] Polyoxyalkylene-polyoxyethylene copolymer dialkyl ethers tend to have a better effect on improving UV protection by heat as their molecular weight decreases. Therefore, among the polyoxypropylene-polyoxyethylene copolymer dimethyl ethers listed above, PEG / PPG-9 / 2 dimethyl ether shows the highest effect.

[0046] On the other hand, examples of the (ii) polyhydric alcohol that can be used in the present invention include polyalkylene glycols of the formula (II) described below, as well as butylene glycol, dipropylene glycol, diglycerin, propanediol, erythritol, xylitol, methyl gluceth-10, and sorbitol.

[0047] Here, the polyalkylene glycol is represented by the following formula (II): HO(RO) p H (II) (In the formula, RO represents an oxyalkylene group having 2 to 4 carbon atoms, and p is an integer of 3 to 500.) It is expressed as follows. Specifically, the glycol is selected from those that can be used in external skin preparations such as cosmetics, such as polyethylene glycol (also written as "PEG"), polypropylene glycol (also written as "PPG"), and polybutylene glycol (also written as "PBG").

[0048] Among these, preferred is polyethylene glycol in which, in the above formula (II), RO is an oxyethylene group and p is in the range of 3 to 500, more preferably 3 to 60. The average molecular weight of preferred polyethylene glycols is in the range of 150 to 23000, further preferably 150 to 3000. Specific examples include polyethylene glycol 300, polyethylene glycol 400, polyethylene glycol 1500, and polyethylene glycol 20000.

[0049] Polyalkylene glycols with a relatively small molecular weight tend to be more effective at improving UV protection by heat. Therefore, among the polyethylene glycols listed above, polyethylene glycol 300 or polyethylene glycol 400 is particularly effective.

[0050] In the present invention, the component (B) includes an embodiment consisting of only an alkylene oxide derivative, an embodiment consisting of only a polyhydric alcohol, and an embodiment containing both an alkylene oxide derivative and a polyhydric alcohol. Among them, in order to maximize the effect of improving ultraviolet protection ability, it is preferable to contain at least one alkylene oxide derivative and at least one polyhydric alcohol. For example, when a low molecular weight polyoxypropylene-polyoxyethylene copolymer dimethyl ether having an average molecular weight of 150 to 3000 is combined with a polyalkylene glycol having an average molecular weight of 150 to 3000, the effect of improving ultraviolet protection ability by heat is remarkable. Specific examples include a combination of polyethylene glycol 300 and PEG / PPG-9 / 2 dimethyl ether, and a combination of polyethylene glycol 400 and PEG / PPG-9 / 2 dimethyl ether.

[0051] The blending amount of the (B) component is at least 1.0% by mass or more, more preferably 2.5% by mass or more, and 20% by mass or less, more preferably 15% by mass or less, based on the total amount of the cosmetic. If the blending amount is less than 1.0% by mass, the effect of improving the ultraviolet protection ability by heat may not be sufficiently obtained. In particular, if the blending amount is 2.5% by mass or more, the effect can be achieved more reliably. Also, if the blending amount exceeds 20% by mass, the stability and usability may be affected.

[0052] <Mass ratio of component (A) / component (B)> In the cosmetic preparation according to the present invention, the components are preferably blended so that the mass ratio of component (A) / component (B) is not more than 20, and more preferably not more than 13. If the amount of component (B) is too small relative to component (A) (if said mass ratio is too large), the effect of improving ultraviolet protection ability by heat may not be sufficiently obtained, and conversely, if the amount of component (B) is too large relative to component (A) (if said mass ratio is too small), usability tends to be impaired.

[0053] <(C) Oil phase thickener> The oil phase thickener (C) in the present invention (hereinafter sometimes simply referred to as "component (C)") can be appropriately selected from substances used as components that exhibit the effect of thickening the oil phase by dissolving in oil or swelling with oil in ordinary emulsion-type cosmetics, etc. For example, dextrin fatty acid esters, sucrose fatty acid esters, solid or semi-solid hydrocarbon oils, organically modified clay minerals, fatty acids or salts thereof, etc. are preferred, and it is particularly preferred to blend two or more selected from these.

[0054] The dextrin fatty acid ester is an ester of dextrin or reduced dextrin with a higher fatty acid, and can be used without any particular limitation as long as it is one that is generally used in cosmetics. It is preferable to use dextrin or reduced dextrin with an average degree of glycopolymerization of 3 to 100. In addition, it is preferable to use a saturated fatty acid having 8 to 22 carbon atoms as the constituent fatty acid of the dextrin fatty acid ester. Specific examples include dextrin palmitate, dextrin oleate, dextrin stearate, dextrin myristate, and dextrin (palmitate / 2-ethylhexanoate).

[0055] The sucrose fatty acid ester that can be preferably used is one in which the fatty acid is linear or branched, saturated or unsaturated, and has a carbon number of 12 to 22. Specific examples include sucrose caprylate, sucrose caprate, sucrose laurate, sucrose myristic acid, sucrose palmitate, sucrose stearate, sucrose oleate, and sucrose erucate.

[0056] The solid or semi-solid hydrocarbon oil is a hydrocarbon that is solid or semi-solid at room temperature (25°C), and specific examples include petrolatum, hydrogenated palm oil, hydrogenated castor oil (castor wax), hydrogenated palm kernel oil, hydrogenated castor oil, hydrogenated peanut oil, hydrogenated rapeseed seed oil, hydrogenated camellia oil, hydrogenated soybean oil, hydrogenated olive oil, hydrogenated macadamia nut oil, hydrogenated sunflower oil, hydrogenated wheat germ oil, hydrogenated rice germ oil, hydrogenated rice bran oil, hydrogenated cottonseed oil, hydrogenated avocado oil, waxes, etc.

[0057] An organically modified clay mineral is a type of colloidal hydrous aluminum silicate having a three-layer structure, and a typical example is a clay mineral represented by the following general formula (III) modified with a quaternary ammonium salt type cationic surfactant. (X,Y) 2―3 (Si,Al) 4 O 10 (OH) 2 Z 1 / 3 nH 2 O (III) (However, X=Al, Fe(III), Mn(III), Cr(III), Y=Mg, Fe(II), Ni, Zn, Li, Z=K, Na, Ca)

[0058] Specific examples include dimethyl distearyl ammonium hectorite (disteardimonium hectorite), dimethyl alkyl ammonium hectorite, benzyl dimethyl stearyl ammonium hectorite, magnesium aluminum silicate treated with distearyl dimethyl ammonium chloride, etc. As commercially available products, Benton 27 (benzyl dimethyl stearyl ammonium chloride treated hectorite: manufactured by Elementis Japan Co., Ltd.) and Benton 38 (distearyl dimethyl ammonium chloride treated hectorite: manufactured by Elementis Japan Co., Ltd.) are preferred.

[0059] The fatty acid is not particularly limited as long as it can be used in cosmetics and the like, and can be selected from fatty acids having a linear or branched, saturated or unsaturated hydrocarbon group. In particular, higher fatty acids that are solid at room temperature and have 8 to 22 carbon atoms, such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isomyristic acid, isopalmitic acid, etc., can be mentioned. Among them, it is particularly preferable to use one or more selected from stearic acid, palmitic acid, and behenic acid. Examples of salts of fatty acids include metal salts such as sodium salts, calcium salts, magnesium salts, and aluminum salts. Amide derivatives and ester derivatives of fatty acids can also be used.

[0060] The amount of the oil-phase thickener (component (C)) in the cosmetic of the present invention is adjusted so that the amount of moisture in the coating film when it comes into contact with moisture is sufficient for the oil-phase thickener to move within the coating film. Specifically, the amount of the oil-phase thickener can be 0.1 to 25% by mass, preferably 0.3 to 18% by mass, and more preferably 0.5 to 13% by mass, based on the total amount of the cosmetic.

[0061] <Optional ingredients> In addition to the above components (A) to (C), the cosmetic of the present invention may contain components that are commonly used in cosmetics, provided that the effects of the present invention are not impaired. For example, surfactants, oils, powder components, pH adjusters, chelating agents, preservatives, antioxidants, medicines, alcohols, coloring agents, pigments, etc. may be appropriately blended as necessary. Examples of the drug include ascorbic acid (vitamin C), tranexamic acid, kojic acid, ellagic acid, arbutin, alkoxysalicylic acid, nicotinamide, glycyrrhizic acid, tocopherol, retinol, and salts or derivatives thereof (e.g., sodium L-ascorbate, magnesium L-ascorbate, L-ascorbic acid glucoside, 2-O-ethyl-L-ascorbic acid, 3-O-ethyl-L-ascorbic acid, sodium 4-methoxysalicylic acid, potassium 4-methoxysalicylic acid, dipotassium glycyrrhizinate, stearyl glycyrrhizinate, tocopherol acetate, retinol acetate, retinol palmitate, etc.). In addition, moisturizers with an IOB value of more than 5, such as glycerin, can also be blended within a range that does not inhibit the effects of the present invention.

[0062] Furthermore, in the case of water-in-oil emulsion cosmetics, the surfactant is preferably a surfactant having a silicone skeleton (polysiloxane structure) and an HLB value of less than 8. For example, it is preferable to use polyoxyalkylene-modified silicone, polyoxyalkylene / alkyl co-modified silicone, polyglycerin-modified silicone, and / or polyglycerin / alkyl co-modified silicone, and among these, polyoxyalkylene-modified silicone and polyoxyalkylene / alkyl-modified silicone are more preferable.

[0063] On the other hand, in the case of oil-in-water emulsion cosmetics, one or more surfactants selected from nonionic surfactants conventionally used in oil-in-water emulsion cosmetics may be used, and among them, those with an HLB of 6 or more are preferably used. In particular, in terms of the stability of the formulation and the effect of improving absorbance by contact with water, it is particularly preferable to contain polyoxyethylene hydrogenated castor oil. Specific examples of polyoxyethylene hydrogenated castor oil include PEG-10 hydrogenated castor oil, PEG-20 hydrogenated castor oil, PEG-25 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-60 hydrogenated castor oil, PEG-80 hydrogenated castor oil, and PEG-100 hydrogenated castor oil. On the other hand, when polyoxyethylene hydrogenated castor oil is not included, it is preferable to use a nonionic surfactant with an HLB of 8 or more, preferably 10 or more, and more preferably 12 or more.

[0064] The oil may be a volatile oil or a non-volatile oil that is typically used in cosmetics. In particular, in the case of emulsion cosmetics, it is preferable to blend an ester oil with an IOB value of 0.3 or more in the oil phase. Volatile oils include volatile hydrocarbon oils and volatile silicone oils. The volatile hydrocarbon oil is not particularly limited as long as it is a hydrocarbon oil that is volatile at room temperature (25° C.) and has been conventionally used in cosmetics, etc. Specific examples include isododecane, isohexadecane, hydrogenated polyisobutene, etc. Volatile silicone oils are silicone oils that are volatile at room temperature (25°C) and have been used conventionally in cosmetics and the like, and include cyclic dimethylpolysiloxanes having 4 to 6 silicon atoms and linear dimethylpolysiloxanes having 2 to 5 silicon atoms. Specific examples include cyclic silicone oils such as hexamethylcyclotrisiloxane (D3), octamethyltetracyclosiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6), diphenylsiloxyphenyl trimethicone, and volatile dimethicone (commercially available products include KF-96L-1.5cs and KF-96L-2cs; manufactured by Shin-Etsu Chemical Co., Ltd.).

[0065] Examples of non-volatile oils include hydrocarbon oils, vegetable oils, ester oils, high molecular weight polyoxyalkylene glycols, and silicone oils. Specific examples include palm oil, linseed oil, camellia oil, macadamia nut oil, corn oil, olive oil, avocado oil, camellia oil, castor oil, safflower oil, apricot kernel oil, cinnamon oil, jojoba oil, grape oil, almond oil, rapeseed oil, sesame oil, sunflower oil, wheat germ oil, rice germ oil, rice bran oil, cottonseed oil, soybean oil, peanut oil, tea seed oil, evening primrose oil, egg yolk oil, liver oil, liquid oils such as triglycerin, glyceryl trioctanoate, and glyceryl triisopalmitate; octanoic acid esters such as cetyl octanoate, isooctanoic acid esters such as glyceryl tri-2-ethylhexanoate and pentaerythritol tetra-2-ethylhexanoate, lauric acid esters such as hexyl laurate, and glyceryl triisopalmitate. Examples of the oil include myristate esters such as isopropyl lysate and octyldodecyl myristate, palmitate esters such as octyl palmitate, stearates such as isocetyl stearate, isostearate esters such as isopropyl isostearate, isopalmitate esters such as octyl isopalmitate, oleate esters such as isodecyl oleate, adipic acid diesters such as diisopropyl adipate, sebacic acid diesters such as diethyl sebacate, and diisostearyl malate; hydrocarbon oils such as liquid paraffin and squalane; and silicone oils such as polyoxybutylene polyoxypropylene glycol and polydimethylsiloxane.

[0066] In addition, it is preferable to incorporate spherical resin powder in an amount of about 1 to 30% by mass as the powder component, since this further improves the feeling of use and provides a smooth and pleasant feel. The spherical resin powder can be any one that is incorporated in general cosmetics without any particular limitations. For example, (meth)acrylic acid ester resin powder, polyamide resin powder (nylon powder), polyethylene powder, polystyrene powder, copolymer resin powder of styrene and (meth)acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, trimethylsilsesquioxane powder, etc., as well as organopolysiloxane elastomer spherical powder or composite spherical powder using this as a base powder can be mentioned. The particle size of the spherical resin powder to be incorporated is not particularly limited, but for example, a particle size of about 1 to 50 μm is preferably used. In addition, these spherical resin powders may be hydrophobized. An example of a commercially available spherical organic resin powder is Ganzpearl (manufactured by Aica Kogyo Co., Ltd.), and an example of a commercially available spherical silicone resin powder is Trefil E-505C, Trefil E-506C, Trefil E-506S, Trefil HP40T (all of which are manufactured by Toray Dow Corning Silicones Co., Ltd.), Tospearl 145A (manufactured by Toshiba Silicones Co., Ltd.), and Silicone Powder KSP-100 and KSP-300 (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0067] The cosmetic of the present invention may be in the form of an oil-based cosmetic, a water-in-oil emulsion cosmetic, an oil-in-water emulsion cosmetic, a multi-phase emulsion cosmetic, or an aqueous cosmetic, and is not particularly limited. In terms of product form, the composition can be provided not only as a sunscreen cosmetic, but also as a makeup cosmetic such as a foundation with a sunscreen effect, a makeup base, a hair cosmetic (including various hair products such as hairsprays and hair treatments for protecting the hair and scalp from ultraviolet rays), a spray-type cosmetic, and the like.

[0068] The cosmetic composition of the present invention has the novel property that the UV protection effect of the coating film is improved by contact with moisture and / or heat. The phrase "the ultraviolet protection effect is improved by contact with moisture and / or heat" can be roughly defined as follows. A predetermined amount of a cosmetic sample is dropped onto a measurement plate, coated over a predetermined area, and dried to form a coating film. The absorbance of the coating film is measured over a range of 400 to 280 nm using a spectrophotometer or the like, and the integrated absorbance value of the coating film is calculated based on the absorbance of an uncoated measurement plate.

[0069] Next, when investigating the improvement of the ultraviolet protection effect due to contact with water, the measurement plate on which the coating film is formed is immersed in water under a predetermined condition, the absorbance of the coating film after drying is measured, and the integrated absorbance value is similarly obtained. On the other hand, when investigating the improvement of the ultraviolet protection effect due to heat, the measurement plate on which the coating film is formed is heated under a predetermined condition, the absorbance of the coating film after returning to room temperature is measured, and the integrated absorbance value is similarly obtained.

[0070] The rate of change in the integrated absorbance value after water bath treatment or heat treatment is calculated according to the following formula. Rate of change in absorbance cumulative value (%) = (integrated absorbance value after processing) / (integrated absorbance value before processing) x 100 When the rate of change in the integrated absorbance value exceeds 100%, it is defined that the ultraviolet protection effect is improved. In the cosmetic composition of the present invention, the rate of change in the integrated absorbance value exceeds at least 100%, preferably 103% or more, more preferably 105% or more, even more preferably 110% or more, and particularly preferably 115% or more.

[0071] When investigating the improvement of the ultraviolet protection effect due to contact with water, it is preferable to immerse the measurement plate in water with a hardness of 50 to 500 at room temperature for about 20 minutes to 1 hour. After immersion, it is preferable to dry it for about 10 to 30 minutes before measuring the absorbance.

[0072] When investigating the improvement of the UV protection effect due to heat, the heating temperature is preferably in the range of 30° C. to 70° C., and can be, for example, 32° C. or more, 35° C. or more, 37° C. or more, or 40° C. or more, and can be 65° C. or less, 60° C. or less, 55° C. or less, or 50° C. or less. If the heating temperature exceeds 70° C., problems such as melting of the resin measurement plate may occur. In order to accurately evaluate the effect of heat, the heating time is preferably 1 minute or more, more preferably 10 minutes or more. The upper limit of the heating time is not particularly limited, but is usually 60 minutes or less, preferably 30 minutes or less. EXAMPLES

[0073] The present invention will be described in more detail below with reference to specific examples, but the present invention is not limited to the following examples. In addition, the blending amounts in the following examples are expressed as mass % unless otherwise specified. Before describing each example in detail, the evaluation methods used will be described.

[0074] (1) Rate of change in integrated absorbance after water bath Each sample was applied at 2 mg / cm on an S-plate (5 x 5 cm V-groove PMMA plate, SPFMASTER-PA01). 2 The plate was applied with a finger for 60 seconds and dried for 15 minutes to form a coating film. Using an uncoated plate as a control, the absorbance (400-280 nm) of the coating film was measured using a Hitachi U-3500 self-recording spectrophotometer, and the integrated absorbance value before the water bath was calculated from the obtained measurement data. Next, the plate that had been measured was thoroughly immersed in water with a hardness of 50 to 500 and stirred in the water for 30 minutes (300 rpm with a 3-1 motor). After that, it was dried for about 15 to 30 minutes until all water droplets on the surface disappeared, and the absorbance was measured again, and the integrated absorbance value after the water bath was calculated from the obtained measurement data. The rate of change (%) in the integrated absorbance value after the water bath was calculated using the following formula. Rate of change in absorbance after water bath (%) = (Accumulated absorbance value after water bath) / (Accumulated absorbance value before water bath) x 100

[0075] (2) Rate of change in integrated absorbance value after heating The integrated absorbance value was determined in the same manner as above, except that the plate was heated in a thermostatic chamber at 37°C for 30 minutes instead of in a water bath, and the rate of change (%) in the integrated absorbance value after heating was calculated using the following formula. Rate of change in absorbance after heating (%) = (Accumulated absorbance value after heating) / (Accumulated absorbance value before heating) x 100

[0076] [Experimental Examples 1-21] Water-in-oil emulsion cosmetics having the compositions shown in Tables 1 to 3 below were prepared according to a conventional method, and the rates of change in integrated absorbance value after bathing in water and after heating were measured according to the evaluation method described above.

[0077] [Table 1]

[0078] As shown in Table 1, when no moisturizer was added, the rate of change in the integrated absorbance value after heating did not exceed 100% (Experimental Examples 1 to 3). On the other hand, when a moisturizer was added, the rate of change in the integrated absorbance value after heating exceeded 100%, confirming that the UV protection effect was improved by heat (Experimental Examples 4 to 7). However, when the amount of moisturizer added was too small, no improvement in the UV protection effect due to heat was confirmed (Experimental Example 8). In addition, the improvement in the UV protection effect due to contact with water was not obtained when no oil phase thickener was added or when the amount of the oil phase thickener added was too small (Experimental Examples 1 and 2), but it was confirmed that the improvement was achieved by adding a sufficient amount of oil phase thickener (Experimental Examples 3 to 8).

[0079] [Table 2]

[0080] As shown in Table 2, it was confirmed that the UV protection effect due to heat was improved by blending a moisturizer, especially one with an IOB of 3 or less (Experimental Examples 9 to 14), but when glycerin with an IOB that is too high was used as the moisturizer, the effect could not be confirmed (Experimental Example 15). In addition, for both alkylene oxide derivatives and polyhydric alcohol derivatives, the lower the molecular weight, the greater the improvement in the UV protection effect due to heat. In fact, when PEG / PPG-9 / 2 dimethyl ether and polyethylene glycol 300 were used in combination as moisturizers, the UV protection effect due to heat was significantly improved (Experimental Example 9).

[0081] [Table 3]

[0082] As shown in Table 3, it was confirmed that when a sufficient amount of moisturizer is contained, the UV protection effect is improved by contact with water or heating, even if the type of oil phase thickener is changed (Experimental Examples 16 to 21).

[0083] [Experimental Example 22] Oil-in-water emulsion cosmetics having the compositions shown in Table 4 below were prepared in a conventional manner, and the rates of change in integrated absorbance values ​​after bathing in water and after heating were measured in accordance with the evaluation method described above.

[0084] [Table 4]

[0085] As shown in Table 4, it was confirmed that even in cosmetics in the form of an oil-in-water emulsion, the UV protection effect was improved by contact with water or heating when a specific moisturizer and oil phase thickener were blended (Experimental Example 22).

[0086] The formulations of the cosmetic of the present invention are exemplified below. It goes without saying that the present invention is not limited to these formulation examples and is specified by the claims. The blending amounts are all expressed in mass % relative to the total amount of the cosmetic.

[0087] Formulation example 1: Two-layer makeup base (Ingredient name) Compounding amount (mass%) Purified water remainder Ethanol 5 PEG / PPG-9 / 2 Dimethyl Ether 4 Glycerin 1 Xylitol 1 Tormentilla Extract 0.3 Sodium hyaluronate 0.1 2-O-Ethyl-L-ascorbic acid 0.1 Dipotassium glycyrrhizinate 0.05 Isododecane 3 Diisopropyl Sebacate 10 PBG / PPG-9 / 1 Copolymer 1 Polyethylene glycol 300 1 Dimethicone 10 Caprylyl Methicone 3 Trifluoroalkyldimethyltrimethylsiloxysilicate 50% dimethicone solution 3 Dextrin palmitate 2 Ethylhexyl methoxycinnamate 7 Octocrylene 3 Diethylamino hydroxybenzoyl hexyl benzoate 1 Bis-ethylhexyloxyphenol methoxyphenyl triazine 0.5 Hydrophobic fine particle titanium dioxide 2 Hydrophobically treated zinc oxide particles 5 Hydrophobic treated pigment grade titanium dioxide 1 Hydrophobic treated iron oxide 0.07 Methyl methacrylate crosspolymer 2 (Vinyl dimethicone / methicone silsesquioxane) crosspolymer 2 Hydrophobically treated talc 4 PEG-9 Polydimethylpolysiloxyethyl Dimethicone 1.5 PEG / PPG-19 / 19 Dimethicone 0.3 Dimethyl distearyl ammonium hectorite 0.4 Isostearic acid 0.3 Stearic acid 0.5 EDTA・3Na Appropriate amount Salt (appropriate amount) Sodium pyrosulfite (appropriate amount) Tocopherol (appropriate amount) Fragrance (appropriate amount)

[0088] Formulation example 2: Cream-type foundation cream (Ingredient name) Compounding amount (mass%) Purified water remainder Ethanol 5 Phenoxyethanol 1 PEG / PPG-9 / 2 Dimethyl Ether 4 Polyethylene glycol 300 1 Glycerin 3 Erythritol 1 Xylitol 1 Tormentilla Extract 1 Glycylglycine 0.1 Tranexamic acid 0.5 Dipotassium glycyrrhizinate 0.05 Tripropylene glycol pivalate 2 Diisopropyl Sebacate 5 Dimethicone 10 Cyclomethicone 3 50% trisiloxysilicate solution in cyclopentasiloxane 2 Dextrin palmitate 2.5 Ethylhexyl methoxycinnamate 7 Hydrophobic fine titanium dioxide particles 1 Hydrophobic Zinc Oxide Microparticles 7 Hydrophobically treated pigment grade titanium dioxide 4 Hydrophobic treated iron oxide 3.2 Hydrophobized barium sulfate coated titanium mica 0.01 Hydrophobized titanium mica 0.01 Dimethicone Crosspolymer 13% Cyclopentasiloxane Mixture 2 Polymethylsilsesquioxane 2 Methyl methacrylate crosspolymer 2 Hydrophobic silica particles 0.5 Lauryl PEG-9 Polydimethylpolysiloxyethyl Dimethicone 2 (Dimethicone / (PEG-10 / 15)) Crosspolymer 1 Dimethyl distearyl ammonium hectorite 1 Isostearic acid 0.2 Stearic acid 0.5 Tocopherol (appropriate amount) EDTA・3Na Appropriate amount Salt (appropriate amount) Sodium pyrosulfite (appropriate amount) Fragrance (appropriate amount)

[0089] Formulation example 3: Aerosol spray sunscreen (Ingredient name) Compounding amount (mass%) Purified water remainder Ethanol 5 Polyethylene glycol 300 2 Silica 0.1 Glycerin 1 PEG / PPG-14 / 7 dimethyl ether 3 DL-α-tocopherol acetate 0.5 D-Glutamic acid 0.1 Stearyl glycyrrhizinate 0.1 Isododecane 10 Glyceryl triethylhexanoate 5 Isopropyl myristic acid 3 Diisopropyl Sebacate 5 PBG / PPG-9 / 1 Copolymer 1 Dimethicone 13 50% trisiloxysilicate solution in cyclopentasiloxane 0.5 Sucrose tetrastearate triacetate 0.5 Dextrin palmitate 2 Ethylhexyl methoxycinnamate 5 Diethylamino hydroxybenzoyl hexyl benzoate 2 Bis-ethylhexyloxyphenol methoxyphenyl triazine 1 Polysilicone-15 2 Octocrylene 5 Methyl methacrylate crosspolymer 5 (Vinyl dimethicone / methicone silsesquioxane) crosspolymer 3 Hydrophobically treated talc 1 Cetyl PEG / PPG-10 / 1 Dimethicone 1 Lauryl PEG-9 Polydimethylpolysiloxyethyl Dimethicone 1 Dimethyl distearyl ammonium hectorite 0.5 Isostearic acid 0.3 Stearic acid 0.5 Sorbitan sesquiisostearate 0.3 EDTA・3Na Appropriate amount Tocopherol (appropriate amount) Fragrance (appropriate amount) The above components were mixed to prepare a concentrate, which was then filled into a spray can in a ratio of 50:50 between the concentrate and LPG to obtain an aerosol spray type sunscreen.

[0090] Formulation example 4: Gel-type sunscreen (Ingredient name) Compounding amount (mass%) Purified water remainder Ethanol 8 PEG / PPG-9 / 2 Dimethyl Ether 4 Rosa roxburghii extract 0.1 Stearoxy hydroxypropyl methylcellulose 0.2 (Dimethylacrylamide / Sodium Acryloyldimethyltaurate) Copolymer 0.2 Succinoglucan 0.1 Glycerin 3 Polyethylene glycol 300 1 BisPEG-18 methyl ether dimethyl silane 3 PEG / PPG-14 / 7 dimethyl ether 1 Polyoxyethylene hydrogenated castor oil (60 mol) 0.2 Ethylhexyl methoxycinnamate 10 Diisopropyl Sebacate 5 Diethylamino hydroxybenzoyl hexyl benzoate 1 Bis-ethylhexyloxyphenol methoxyphenyl triazine 3 Hydrophobic fine titanium dioxide particles 3 Hydrophobically treated zinc oxide particles 5 Isopropyl myristic acid 2 Dextrin palmitate 0.5 Sucrose stearate acetate 1 Polypropylene glycol (17) 1 N-Lauroyl-L-glutamic acid di(cholesteryl phytosteryl) 0.1 Dextrin (palmitic acid / ethylhexanoic acid) 0.5 Fragrance (appropriate amount) Silica 0.3

[0091] The present invention includes the following aspects. [Section 1] (A) UV protection agent, (B) one or more selected from (i) alkylene oxide derivatives and (ii) polyhydric alcohols, each of which is water-soluble and has an IOB of 5.0 or less; and (C) an oil phase thickener, The mass ratio of component (A) / component (B) is 20 or less, and The (B)(i) alkylene oxide derivative has the following formula (I): R 1 O-[(AO) m (EO) n ]-R 2 (I) (In the formula, R 1 and R 2each independently represents a hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, AO represents an oxyalkylene group having 3 to 4 carbon atoms, and EO represents an oxyethylene group, and 1≦m≦70, 1≦n≦70, and m+n≦40. A cosmetic composition comprising a polyoxyalkylene-polyoxyethylene copolymer dialkyl ether represented by the formula: [Section 2] (B)(i) The cosmetic preparation according to item 1, wherein the alkylene oxide derivative satisfies m+n≦20 in formula (I). [Section 3] (B)(ii) the polyhydric alcohol is at least one selected from the group consisting of polyalkylene glycol, butylene glycol, dipropylene glycol, diglycerin, propanediol, erythritol, xylitol, methyl gluceth-10, and sorbitol; The polyalkylene glycol has the following formula (II): HO(RO) p H (II) (wherein RO represents an oxyalkylene group having 2 to 4 carbon atoms, and p is an integer of 3 to 500). [Section 4] The cosmetic preparation according to any one of items 1 to 3, wherein the (B)(ii) polyhydric alcohol is a polyethylene glycol having an average molecular weight of 150 to 23,000. [Section 5] 5. The cosmetic preparation according to any one of items 1 to 4, wherein component (B) comprises at least one of (i) an alkylene oxide derivative and (ii) a polyhydric alcohol. [Section 6] 6. The cosmetic preparation according to any one of items 1 to 5, wherein the (C) oil phase thickener is selected from dextrin fatty acid esters, sucrose fatty acid esters, solid or semi-solid hydrocarbon oils, organically modified clay minerals, or fatty acids or salts thereof.

Claims

[Claim 1] (A) an ultraviolet protection agent comprising an ultraviolet absorber; (B) Both of the following components (i) and (ii) that are water-soluble and have an IOB of 5.0 or less: (i) A compound represented by the following formula (I): R 1 O-[(AO) m (EO) n ]-R 2 (I) (In the formula, R 1 and R 2 each independently represent a hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, AO represents an oxyalkylene group having 3 to 4 carbon atoms, EO represents an oxyethylene group, and m+n≦20 is satisfied.) A polyoxyalkylene-polyoxyethylene copolymer dialkyl ether represented by the formula: (ii) polyethylene glycol having an average molecular weight of 150 to 3000, and (C) an oil phase thickener selected from a dextrin fatty acid ester, a sucrose fatty acid ester, or a fatty acid or a salt thereof; The blending amount of the component (B) is 1.0 to 20% by mass based on the total amount of the cosmetic, The blending amount of the component (C) is 0.1 to 25% by mass based on the total amount of the cosmetic, The mass ratio of the (A) component to the (B) component is 20 or less. Cosmetics.

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