TWI745503B - Oil-in-water UV protection cosmetics - Google Patents

Abstract

The oil-in-water type ultraviolet protective cosmetics provided by the present invention have a good feeling of use that can be used daily, and have a uniform and high ultraviolet protective effect.

、4-第三丁基-4'-甲氧基二苯甲醯基甲烷、奧克立林、二甲氧基苯亞甲基二氧基咪唑啶丙酸-2-乙基己酯、二乙胺基羥苯甲醯基苯甲酸己酯、雙乙基己氧基酚甲氧苯基三

、亞甲基雙苯并三唑基四甲基丁基酚、苯基苯并咪唑磺酸及二甲矽亞苄丙二酸二乙酯中選擇1種或2種以上的油溶性紫外線吸收劑；(B)20℃下呈液態狀的油劑(但成分(A)除外)；(C)糊精脂肪酸酯；(D)疏水性二氧化矽0.5質量%以上且2質量%以下；以及(E)具有由(甲基)丙烯酸或磺酸所衍生之構成單元的水溶性高分子。 The oil-in-water UV protection cosmetic of the present invention contains the following components (A), (B), (C), (D) and (E): (A) from: p-methoxycinnamic acid-2- Ethylhexyl ester, 2,4,6-ginseng[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-tris

, 4-tertiary butyl-4'-methoxydibenzyl methane, octocrelin, dimethoxybenzylidene dioxyimidazolidinium propionate-2-ethylhexyl, two Ethyl hydroxybenzyl hexyl benzoate, diethylhexyloxyphenol methoxyphenyl three

, Methylene bisbenzotriazole tetramethyl butyl phenol, phenyl benzimidazole sulfonic acid and dimethicone benzylidene malonate, select one or more oil-soluble UV absorbers (B) Liquid oil at 20°C (except for component (A)); (C) dextrin fatty acid ester; (D) hydrophobic silica 0.5% by mass or more and 2% by mass or less; and (E) A water-soluble polymer having structural units derived from (meth)acrylic acid or sulfonic acid.

Description

Oil-in-water UV protection cosmetics

The present invention relates to a UV protection cosmetic of an oil-in-water type emulsification system.

The sunscreen cosmetics that protect against ultraviolet rays can block ultraviolet rays from irradiating the skin to obtain a high SPF (Sun Protection Factor, sun protection factor) value, and are blended with ultraviolet absorbers or ultraviolet scattering agents. In particular, the water-in-oil type composition containing these is widely used because it becomes a high SPF sunscreen cosmetic with excellent water resistance.

However, the water-in-oil composition may be sticky or sticky when applied, and may become rough or white due to the ultraviolet scattering agent.

Therefore, there have been reports of oil-in-water sunscreen cosmetics that can suppress stickiness and stickiness and have a good feeling of use (Patent Documents 1 to 4).

(Patent Document 1) Japanese Patent Laid-Open No. 2008-162930

(Patent Document 2) Japanese Patent Laid-Open No. 2014-105207

(Patent Document 3) Japanese Patent Laid-Open No. 2014-185137

(Patent Document 4) Japanese Patent Laid-Open No. 2016-94405

、4-第三丁基-4'-甲氧基二苯甲醯基甲烷、奧克立林(octocrylene，2-氰基-3,3-二苯基丙烯酸異辛酯)、二甲氧基苯亞甲基二氧基咪唑啶丙酸-2-乙基己酯、二乙胺基羥苯甲醯基苯甲酸己酯、雙乙基己氧基酚甲氧苯基三

、亞甲基雙苯并三唑基四甲基丁基酚、苯基苯并咪唑磺酸及二甲矽亞苄丙二酸二乙酯(dimethicodiethyl benzalmalonate)中選擇1種或2種以上的油溶性紫外線吸收劑；(B)20℃下呈液態狀的油劑(但成分(A)除外)；(C)糊精脂肪酸酯；(D)疏水性二氧化矽0.5質量%以上且2質量%以下；(E)具有由(甲基)丙烯酸或磺酸所衍生之構成單元的水溶性高分子。 The oil-in-water UV protection cosmetics provided by the present invention contain the following ingredients (A), (B), (C), (D) and (E): (A) from: p-methoxycinnamic acid- 2-ethylhexyl ester, 2,4,6-ginseng[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-tri

, 4-tertiary butyl-4'-methoxydibenzamethane, octocrylene (octocrylene, 2-cyano-3,3-diphenyl acrylate), dimethoxy Benzylidene dioxyimidazolidinium propionate-2-ethylhexyl ester, diethylamino hydroxybenzyl hexyl benzoate, diethylhexyloxyphenol methoxyphenyl three

, Methylene bis benzotriazole tetramethyl butyl phenol, phenyl benzimidazole sulfonic acid and dimethicodiethyl benzalmalonate (dimethicodiethyl benzalmalonate) select one or more oils Soluble ultraviolet absorber; (B) oil agent that is liquid at 20°C (except component (A)); (C) dextrin fatty acid ester; (D) hydrophobic silica 0.5 mass% or more and 2 mass % Or less; (E) a water-soluble polymer having structural units derived from (meth)acrylic acid or sulfonic acid.

The conventional oil-in-water UV protection cosmetics have a good feeling of use, such as stickiness or stickiness, but they have the problem of not being able to obtain transparency or uniform UV protection effects. When the system does not contain an ultraviolet scattering agent in order to suppress dead white and improve transparency, it is obvious that a sufficient ultraviolet protection effect cannot be obtained.

Therefore, the present invention provides an oil-in-water type ultraviolet protective cosmetic that has a good feeling of use that can be used every day, and has a uniform and high ultraviolet protective effect.

The inventors of the present invention have examined the reasons why the oil-in-water UV-protective cosmetics containing oil-soluble UV absorbers cannot exhibit sufficient UV-protection effects. As a result, they have found that they will evenly adhere to the skin when the cosmetics are applied. The cosmetic material remains in the skin groove, but the cosmetic material coating film on the skin ridge part becomes thin, and as a result, a sufficient UV protection effect cannot be obtained. Therefore, the present inventors conducted various reviews on the means to make the coating film adhere to the skin after drying, and found that in addition to oil-soluble ultraviolet absorbers and liquid oils, dextrin fatty acid esters and hydrophobic silica are used in combination. And a specific water-soluble polymer, it is possible to obtain an oil-in-water type UV-protective cosmetic with excellent UV protection effect and transparency, no roughness after drying, and good adhesion to the skin, thus completing the present invention.

If the oil-in-water UV protection cosmetics of the present invention are used, even after drying, a coating film with good adhesion to the skin can be formed from the time of application to the skin, and there is no roughness after drying, and the coating film is transparent , At the same time uniform and excellent UV protection effect. Therefore, the oil-in-water type ultraviolet protective cosmetic of the present invention has a good feeling of use that can be used daily, and a uniform and excellent ultraviolet protective effect.

、4-第三丁基-4'-甲氧基二苯甲醯基甲烷、奧克立林、二甲氧基苯亞甲基二氧基咪唑啶丙酸-2-乙基己酯、二乙 胺基羥苯甲醯基苯甲酸己酯、雙乙基己氧基酚甲氧苯基三

、亞甲基雙苯并三唑基四甲基丁基酚、苯基苯并咪唑磺酸及二甲矽亞苄丙二酸二乙酯中選擇1種或2種以上的油溶性紫外線吸收劑；(B)20℃下呈液態狀的油劑(但，成分(A)除外)；(C)糊精脂肪酸酯；(D)疏水性二氧化矽0.5質量%以上且2質量%以下；(E)具有由(甲基)丙烯酸或磺酸所衍生之構成單元的水溶性高分子的水中油型紫外線防禦化妝料。 The oil-in-water type ultraviolet protective cosmetics (hereinafter also referred to as "cosmetics") of the present invention contains the following ingredients (A), (B), (C), (D) and (E): (A) From: Yes Methoxycinnamic acid-2-ethylhexyl ester, 2,4,6-ginseng[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-tri

, 4-tertiary butyl-4'-methoxydibenzyl methane, octocrelin, dimethoxybenzylidene dioxyimidazolidinium propionate-2-ethylhexyl, two Ethyl hydroxybenzyl hexyl benzoate, diethylhexyloxyphenol methoxyphenyl three

, Methylene bisbenzotriazole tetramethyl butyl phenol, phenyl benzimidazole sulfonic acid and dimethicone benzylidene malonate, select one or more oil-soluble UV absorbers (B) Liquid oil at 20°C (except for component (A)); (C) Dextrin fatty acid ester; (D) Hydrophobic silica 0.5% by mass or more and 2% by mass or less; (E) An oil-in-water type ultraviolet protective cosmetic having a water-soluble polymer having structural units derived from (meth)acrylic acid or sulfonic acid.

Component (A) is an oil-soluble ultraviolet absorber selected from one or two or more of the following components. The name of the representative raw material, the name of the manufacturer, and the properties at 20°C are indicated after each ingredient.

(Uvinul T150、BASF公司製、固態狀)、4-第三丁基-4'-甲氧基二苯甲醯基甲烷(PARSOL 1789、DSM Nutrition Japan公司製、固態狀)、奧克立林(PARSOL 340、DSM Nutrition Japan公司製、液態狀)、二甲氧基苯亞甲基二氧基咪唑啶丙酸-2-乙基己酯(SOFT SHADE DH、AJINOMOTO HEALTHY SUPPLY公司製、固態狀)、二乙胺基羥苯甲醯基苯甲酸己酯(Uvinul A PLUS GRANULAR、BASF公司製、固態狀)、雙乙基己氧基酚甲氧苯基三

(Tinosorb S、BASF公司製、固態狀)、亞甲基雙苯并三唑基四甲基丁基酚(Tinosorb M、BASF公司製、固態狀)、苯基苯并咪唑磺酸(PARSOL HS、DSM Nutrition Japan公司製、液態狀)、二甲矽亞苄丙二酸二乙酯(PARSOL SLX、DSM Nutrition Japan公司製、液態狀)。該等之中，就從獲得良好紫外線防禦效果的觀點，較佳係組合使用2種以上。又，較佳係至少含有對甲氧基桂皮酸-2-乙基己酯、與二乙胺基羥苯甲醯基苯甲酸己酯等2種，更佳係至少含有對甲氧基桂皮酸-2-乙基己酯、二乙胺基羥苯甲醯基苯甲酸己酯、2,4,6-參[4-(2-乙基己氧基羰基)苯胺基]-1,3,5-三

、及雙乙基己氧基酚甲氧苯基三

等4種。 For example: p-methoxycinnamic acid-2-ethylhexyl ester (Uvinul MC80, made by BASF company, liquid), 2,4,6-ginseng [4-(2-ethylhexyloxycarbonyl)anilino]- 1,3,5-Three

(Uvinul T150, manufactured by BASF Corporation, solid state), 4-tert-butyl-4'-methoxybenzimidyl methane (PARSOL 1789, manufactured by DSM Nutrition Japan Corporation, solid state), octocrelin ( PARSOL 340, manufactured by DSM Nutrition Japan, in liquid form), dimethoxybenzylidene dioxyimidazolidinium propionate-2-ethylhexyl ester (SOFT SHADE DH, manufactured by AJINOMOTO HEALTHY SUPPLY, in solid form), Diethylamino hydroxybenzyl hexyl benzoate (Uvinul A PLUS GRANULAR, manufactured by BASF Corporation, solid state), diethylhexyloxyphenol methoxyphenyl three

(Tinosorb S, manufactured by BASF Corporation, solid state), methylene bisbenzotriazole tetramethyl butyl phenol (Tinosorb M, manufactured by BASF Corporation, solid state), phenylbenzimidazole sulfonic acid (PARSOL HS, DSM Nutrition Japan Co., liquid state), dimethicone benzylidene malonate (PARSOL SLX, DSM Nutrition Japan Co., liquid state). Among them, from the viewpoint of obtaining a good ultraviolet protection effect, it is preferable to use two or more types in combination. In addition, it is preferable to contain at least two kinds of p-methoxycinnamic acid-2-ethylhexyl and diethylamino parabens hexyl benzoate, and more preferably to contain at least p-methoxycinnamic acid -2-ethylhexyl ester, diethylamino hydroxybenzyl hexyl benzoate, 2,4,6-ginseng [4-(2-ethylhexyloxycarbonyl)anilino]-1,3, 5-Three

, And diethylhexyloxyphenol methoxyphenyl tri

Etc. 4 kinds.

In addition, in the present invention, the so-called "liquid state" refers to a state that has fluidity at 1 atm and 20°C, that is, the melting point is below 20°C (amorphous substance without a melting point refers to the fusion point (fusion point). point) below 20°C).

The content of ingredient (A) is preferably 0.6% by mass or more, more preferably 2% by mass or more, particularly good 5% by mass or more, and the best system from the viewpoint of obtaining a good UV protection effect. 8% by mass or more.

Furthermore, the content of the component (A) relative to the entire cosmetics, from the viewpoint of suppressing stickiness and stickiness and maintaining a good feeling of use, it is preferably 30% by mass or less, more preferably 25% by mass or less, especially preferred The system is 18% by mass or less, and the best system is 16% by mass or less.

Furthermore, the content of the component (A) in the cosmetic is preferably 0.6-30% by mass, more preferably 2-25% by mass, particularly preferably 5-18% by mass, and most preferably 8-16% by mass.

In addition, in the cosmetic, the content of the component (A) in the total amount of the ultraviolet absorber is preferably 90% by mass or more, and more preferably 95% by mass or more.

When the component (A) is an oil-soluble ultraviolet absorber that is solid at 20°C, it is best to dissolve it in a liquid oil at 20°C from the viewpoint of obtaining a uniform and high UV protection effect. , And the 20°C liquid oil system can use the liquid component (A) or the component (B).

Component (B) is a liquid oil at 20°C (except for component (A)).

As the component (B), the oil system that is liquid at 20°C includes, for example: (B1) ester oil that is liquid at 20°C, (B2) silicone oil that is liquid at 20°C, (B3 ) Hydrocarbon oils that are liquid at 20°C, ether oils with an HLB of less than 1, higher fatty acids, and higher alcohols. In addition, the "liquid state" described here is also the same as the definition described in the part of component (A).

(B1) The ester oil that is liquid at 20°C preferably uses one or more types selected from the group consisting of fatty acid monohydric alcohol esters, glycerin fatty acid esters, benzoic acid esters, and fatty acid triglycerides. .

More systems include, for example, octyl dodecyl myristate, isocetyl myristate, glyceryl tris(2-ethylhexanoic acid), glyceryl triisostearate, isostearic acid Propylene glycol ester, diethylhexyl sebacate, tris (2-ethylhexanoic acid) trimethyl propyl ester, succinate bis (2-ethylhexyl ester), bis (caprylic acid/capric acid) propylene glycol, 2- Cyano-3,3-diphenyl acrylate-2-ethylhexyl ester, tris(caprylic acid/capric acid) glyceride, trimethylol propyl tricaprylate, glyceryl tricaprylate, ethylene glycol dicaprylate, Glyceryl dimyristate, diethylene glycol dilaurate, pentaerythritol tetra(2-ethylhexanoate), glyceryl diacetate monostearate, diisostearyl malate, alkyl benzoate (C12~C15) Alkyl benzoate (above C12 and less than C15), octyl dodecyl lactate, oleyl lactate, propylene glycol dihexanoate, diisopropyl sebacate, dicaprate Ethylene glycol ester, neopentyl glycol dicaprate, neopentyl glycol di(2-ethylhexanoate), glycerol dicoconut oil fatty acid, glyceryl dilaurate, glyceryl sesquioleate, mono Ethylene glycol oleate, cetyl lactate, diethyl sebacate, castor oil fatty acid methyl ester, isopropyl palmitate, ethylene glycol palmitate, bis(trimethylacetic acid) tripropylene glycol ester, and One type or two or more types are selected from the group consisting of isononanoate istridecyl ester.

Among them, especially from the viewpoint of imparting an emollient effect and suppressing a harsh feeling after drying, the component (B1) preferably contains alkyl benzoate (C12~C15), isopropyl palmitate, di(2) -Ethylhexanoic acid) neopentyl glycol ester, neopentyl glycol didecanoate, and isononanoate isotridecyl ester selected from one or two or more. More preferably, it contains alkyl benzoate (C12~C15).

Furthermore, by using (B2) silicone oil that is liquid at 20°C, the degree of non-stickiness can be particularly improved.

(B2) Specific examples of silicone oil in liquid form at 20°C. From the viewpoint of improving the degree of non-stickiness, dimethylpolysiloxane, dimethylcyclosiloxane, and more preferably Viscosity at 25°C is 20mPa. Dimethyl polysiloxane and dimethyl cyclopolysiloxane below s have a viscosity of 20mPa at 25°C. Dimethyl polysiloxane below s.

The viscosity is measured at 25°C using a type B viscometer (TOKI SANGYO VISCOMETER TVB-10M, manufactured by Toki Sangyo Co., Ltd.) and rotor 1. It can be measured at 60 rpm for 1 minute.

Furthermore, (B3) hydrocarbon oils that are liquid at 20°C, ether oils with an HLB of less than 1, higher fatty acids, and higher alcohols can also be used within the range where the long-term storage stability of the preparation and the feeling of use do not deteriorate.

(B3) Specific examples of hydrocarbon oils that are liquid at 20°C include α-olefin oligomers, liquid isoalkanes, light liquid isoalkanes, liquid paraffins, squalane, and the like.

For the component (B) in the related cosmetics, the component (B1), (B2) or (B3) can be used alone or in combination. When used alone, the component (B1) is preferred from the viewpoint of imparting an emollient effect and suppressing roughness after drying, and the component (B2) is particularly preferred from the viewpoint of increasing the degree of non-stickiness. In addition, when used in combination, it is preferable to contain ingredient (B1) or ingredient (B2), because it contains ingredients (B1) and (B2), which can simultaneously impart a moisturizing effect to the skin and increase the degree of non-stickiness. It has two characteristics, so it can maintain the close feeling to the skin and there is no rough feeling after drying, so it is better.

Furthermore, the content of the component (B) in the cosmetic is preferably 0.5% by mass or more, more preferably 1% by mass or more, with respect to the entire cosmetic from the viewpoint of imparting an emollient effect and suppressing sticking. The best system is 2% by mass or more.

Furthermore, from the same viewpoint, the content of the component (B) in the cosmetic is preferably 12% by mass or less, more preferably 8% by mass or less, and particularly preferably 7% by mass or less relative to the entire cosmetic.

Furthermore, the content of the component (B) in the cosmetic is preferably 0.5-12% by mass, more preferably 1-8% by mass, and particularly preferably 2-7% by mass.

Component (C) is dextrin fatty acid ester.

By containing ingredient (C), the oil phase of the cosmetic can be gelled, and the adhesion of the cosmetic to the skin ridge can be improved, and the adhesiveness of the dried cosmetic can be improved. In addition, the effect of UV protection has also been improved.

(C) Dextrin fatty acid esters are esters of fatty acids and dextrins. The carbon number of the above fatty acids is preferably 8-24, more preferably 14-18; the above fatty acids are linear or branched saturated or unsaturated Fatty acid: The average degree of polymerization of the above component (C) is preferably 10-50, more preferably 20-30.

Specific examples include: dextrin palmitate, dextrin palmitic acid/2-ethylhexanoate, dextrin stearate, palmitic acid/dextrin stearate, dextrin oleate, dextrin isopalmitate, Dextrin isostearate, dextrin myristate, etc., can be used selected from one type or two or more types.

Commercially available products include, for example, dextrin palmitate (RHEOPEARL KL2, RHEOPEARL KS2, RHEOPEARL TL2), palmitic acid/2-ethylhexanoate dextrin (RHEOPEARL TT2), dextrin myristate ( RHEOPEARL MKL2), etc. (all manufactured by Chiba Flour Milling Co., Ltd.).

The content of the component (C) in the cosmetic is preferably 0.2% by mass or more, and more preferably 0.3% by mass relative to the entire cosmetic from the viewpoint of improving the feeling of use, adhesion after drying, and UV protection effect. Above, the particularly preferred system is 0.4% by mass or more, and from the viewpoint of no roughness after drying, it is preferably 1.5% by mass or less, more preferably 1% by mass or less, particularly preferably 0.7% by mass or less, and the best system 0.6% by mass or less. Specifically, the content of the component (C) is preferably 0.2 to 1.5% by mass, more preferably 0.3 to 1% by mass, particularly preferably 0.4 to 0.7% by mass, and most preferably 0.4 to 0.6% by mass.

Furthermore, the mass ratio ((A+B)/C) of the total of the components (A) and (B) to the component (C) is effective in terms of UV protection, suppression of roughness during drying, and improved adhesion after drying. From the viewpoints of the properties and long-term storage stability of the preparation, it is preferably 10 or more, more preferably 20 or more, and particularly preferably 30 or more. Furthermore, it is preferably 90 or less, more preferably 60 or less, and particularly preferably 50 or less. The specific ((A+B)/C) is preferably 10~90, more preferably 20~60, particularly preferably 30~50.

Component (D) is hydrophobic silica. By containing ingredient (D), the oil phase of the cosmetic can be gelled, and the cosmetic coating film on the skin ridge can be maintained after drying, and the adhesiveness of the cosmetic after drying can be improved.

Component (D) is silicon dioxide whose surface has been hydrophobized. Hydrophobic treatment systems can include, for example: dimethyl silyl treatment, trimethyl silyl treatment, dimethyl polysiloxane treatment, dimethyl siloxane treatment, amine alkyl silyl treatment, alkane Base silicidation, methacrylic silicidation, etc. Among them, the dimethyl silyl treatment is preferred from the viewpoint of ultraviolet protection effect.

Furthermore, the average primary particle size of the hydrophobic silica of the component (D) is preferably 5nm-50nm, more preferably 5nm-30nm, and particularly preferably 5nm-20nm from the viewpoint of ultraviolet protection effect. In addition, in the present invention, the "average primary particle size" refers to the particle size of the prototype silica powder of the constituent (D), using a transmission electron microscope (Transmission Electron Microscope: TEM) at a magnification of 100000 Conditions, calculate the average value of the primary particle size of about 2000 particles in the image can be obtained. The average particle diameter of the component (D) is preferably 15 μm or less, more preferably 5 μm or less, and particularly preferably 1 μm or less from the viewpoint of ultraviolet protection effect.

If the content of the component (D) in the cosmetic is less than 0.5% relative to the total amount of the cosmetic, it may not be able to show a sufficient UV protection effect. From this point of view and the viewpoint of maintaining the adhesion to the skin, the content of ingredient (D) in the cosmetic is preferably 0.5% by mass or more, more preferably 0.7% by mass or more, and particularly preferably 0.8 Above mass%. In addition, if the content of the component (D) in the cosmetic is more than 2% relative to the total amount of the cosmetic, the feeling in use may deteriorate (a rough feeling occurs when dry). From this point of view, the content of the component (D) in the cosmetic relative to the total amount of the cosmetic is preferably 2% by mass or less, more preferably 1.5% by mass or less, and particularly preferably 1.3% by mass or less. Specifically, the content of the component (D) is 0.5 to 2% by mass, more preferably 0.7 to 1.5% by mass, and particularly preferably 0.8 to 1.3% by mass.

Furthermore, the mass ratio ((A+B)/D) of the total of the components (A) and (B) to the component (D) ((A+B)/D) is preferably 8 from the viewpoint of ultraviolet protection effect and improved adhesion after drying. Above, more preferably 12 or above, and particularly good 15 or above. Moreover, from the viewpoint of the degree of no roughness after drying, it is preferably 40 or less, more preferably 35 or less, particularly preferably 30 or less, and most preferably 22 or less. The specific ((A+B)/D) is preferably 8-40, more preferably 12-35, particularly good 15-30, and best 15-22.

Component (E) is a water-soluble polymer having structural units derived from (meth)acrylic acid or sulfonic acid. By containing ingredient (E), the long-term storage stability and the freshness of the feeling of use can be improved. The term "(meth)acrylic acid" here covers the concepts of methacrylic acid and acrylic acid.

The water-soluble polymer having structural units derived from (meth)acrylic acid, for example, can be selected from methacrylic acid, acrylic acid, methacrylate, acrylate, methacrylamide, and acrylamide The monomer is a homopolymer of the constituent unit, or a copolymer containing two or more of these monomers. More systems can include, for example: carboxyvinyl polymer (such as Synthalen K, L, Wako Pure Chemical Industries, Ltd.), acrylic acid. Alkyl methacrylate copolymers (for example, PEMULEN TR-1, TR-2, manufactured by Lubrizol), polypropylene amide (SEPIGEL 305) sold by SEPPIC, (acrylic acid Na/acrylic acid dimethyl cattle Sulfonic acid Na) copolymer (SIMULGEL EG), (Hydroxyethyl acrylate/acryloyl dimethyl taurine Na) copolymer (SIMULGEL FL, SIMULGEL NS, SEPIPLUS S, SEPINOV EMT 10), (acrylamide/ Ammonium acrylate) copolymer (SEPIPLUS 265), polyacrylate-13 (SEPIPLUS 400), etc. One type or two or more types of (meth)acrylic polymers selected from these can be used.

Furthermore, the water-soluble polymer having structural units derived from sulfonic acid may be, for example, stearyloxy PG hydroxyethyl cellulose sulfonic acid Na (POIZ 310, manufactured by Kao Corporation).

Among these, when using acrylic acid. If one or more types of methacrylic acid copolymer and (acrylic acid Na/acrylic acid dimethyl taurine Na) copolymer are selected, the long-term storage stability of the composition can be stabilized even in small amounts. And the point of view that the feeling of use is improved is better.

In the cosmetic of the present invention, from the viewpoint of improving the long-term storage stability of the cosmetic, the ingredient (E) contained in the cosmetic is preferably at least 0.02% by mass, more preferably at least 0.15% by mass, and is improved from the viewpoint of improving the feeling of use. From a viewpoint, the content is preferably 1.0% by mass or less, and more preferably 0.8% by mass or less. Specifically, the content of the component (E) in the cosmetic is preferably 0.02 to 1.0% by mass, more preferably 0.15 to 0.8% by mass. Here, the content of the ingredient (E) refers to the content of the active ingredient contained in the product, not the amount of a commercially available product.

In addition, within a range that does not impair the effects of the present invention, the cosmetic may contain water-soluble polymers other than the component (E). From the viewpoint of the long-term stability and the feeling of use of the cosmetic, the water-soluble polymer other than the component (E) in the cosmetic is preferably 1% by mass or less, more preferably 0.5% by mass or less, and particularly preferably 0.1% by mass % Or less, the best system is essentially 0% by mass.

The cosmetic of the present invention may further contain, for example, surfactants, water, fragrances, moisturizers, beauty ingredients, medicinal ingredients, thickeners, fungicides, pH adjusters, antioxidants, preservatives, carbon Alcohols with 1 to 5 (that is, alcohols with 1 to 5 carbon atoms) and other ingredients commonly used in cosmetics.

Surfactants can use well-known anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants with an HLB of 1 or more other than component (B) to improve emulsification stability and improve makeup inhibition. From the viewpoint of material stickiness, it is preferable to contain a nonionic surfactant.

Examples of nonionic surfactants include: polyglycerol fatty acid esters, propylene glycol fatty acid esters, pentaerythritol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene Glycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene plant sterol, polyoxyethylene stanol, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylbenzene Ether, polyoxyethylene castor oil, polyoxyethylene hardened castor oil, polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, polyoxyethylene beeswax derivatives, polyoxyethylene alkylamine, polyoxyethylene fatty acid amide, Polyoxyethylene alkyl phenyl formaldehyde condensation polymer, single-chain length polyoxyethylene alkyl ether, polyether modified polysiloxane, etc. Among them, it is preferable to select one or more kinds from polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, and polyoxyethylene hardened castor oil, more preferably polyoxyethylene alkyl ether. From the same viewpoint, the number of carbon atoms in the alkyl group constituting the polyoxyethylene alkyl ether is preferably 12 to 22, and more preferably 14 to 20. From the same viewpoint, the number of carbon atoms in the alkyl group constituting the polyoxyethylene alkyl ether is preferably 12 or more, more preferably 14 or more, and more preferably 22 or less, and more preferably 20 or less. From the same viewpoint, the polyoxyethylene alkyl ether is preferably polyoxyethylene-2-hexyl decyl ether.

The content of surfactants in cosmetics, from the viewpoint of improving the emulsion stability of the cosmetics and enhancing the adhesion suppression, is preferably 0.001 to 1% by mass, more preferably 0.005 to 0.5% by mass, relative to the overall cosmetics. The best system is 0.007~0.10% by mass, and the best system is 0.008~0.08% by mass.

Specific examples of pH adjusters include, for example, sodium hydroxide, potassium hydroxide, ammonium chloride, triethanolamine, 2-amino-2-methylpropanol, 2-amino-2-methyl-1, Bases such as 3-propanediol and 2-amino-2-hydroxymethyl-1,3-propanediol; acids such as organic acids.

Furthermore, the cosmetic of the present invention may contain powders other than the above-mentioned components, and specific examples include talc, starch, resin powder, and the like. Among them, specific examples of the resin powder may include, for example: polysiloxane resin powder, lauryl methacrylate. Ethylene glycol dimethacrylate. The powder of the sodium methacrylate copolymer can be more systematic, for example, the resin powder described in JP 2006-225311 A.

The cosmetic system of the present invention can be manufactured in accordance with an ordinary method.

Specifically, the cosmetics can be obtained according to the following procedure. That is, at a predetermined temperature of about 25° C., in a mixing tank filled with water, the component (E) is added while stirring as necessary to prepare a water phase. On the other hand, at a predetermined temperature of about 80°C, the component (A), the component (B), the component (C), and the component (D) are added in a predetermined order, and the oil phase is prepared by mixing. To the obtained water phase, the oil phase, pH adjuster and other ingredients are added, and the cosmetics are obtained by stirring.

Furthermore, the cosmetics of the present invention cover, for example, makeup cosmetics such as bases and emulsion foundations; sunscreen cosmetics such as sunscreen gels and sunscreen creams, and the like. In addition, the dosage form may be, for example, gel, lotion, cream, etc.

By using the oil-in-water cosmetics of the present invention, they are not sticky, have a good feeling of use, and have high transparency. The dried coating film is still tightly attached to the skin, so a uniform UV protection effect can be obtained, and there is no Roughness. Therefore, it can be effectively used as a UV protection agent that can be used daily. In addition, the object of use of the cosmetic of the present invention is not limited to the face, but can also be applied to hands and feet.

Above, the embodiments of the present invention have been described, but the following embodiments may be further cited.

、4-第三丁基-4'-甲氧基二苯甲醯基甲烷、奧克立林(Octocrylene)、二甲氧基苯亞甲基二氧基咪唑啶丙酸-2-乙基己酯、二乙胺基羥苯甲醯基苯甲酸己酯、雙乙基己氧基酚甲氧苯基三

、亞甲基雙苯并三唑基四甲基丁基酚、苯基苯并咪唑磺酸及二甲矽亞苄丙二酸二乙酯中選擇1種或2種以上的油溶性紫外線吸收劑；(B)20℃下呈液態狀的油劑(但成分(A)除外)；(C)糊精脂肪酸酯；(D)疏水性二氧化矽0.5質量%以上且2質量%以下；以及(E)具有由(甲基)丙烯酸或磺酸所衍生之構成單元的水溶性高分子。 <1> An oil-based UV protection cosmetic containing the following ingredients (A), (B), (C), (D) and (E): (A) from: p-methoxycinnamic acid-2- Ethylhexyl ester, 2,4,6-ginseng[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-tris

, 4-tertiary butyl-4'-methoxydibenzylmethane, octocrylene, dimethoxybenzylidene dioxyimidazolidinium propionate-2-ethylhexyl Ester, diethylamino hydroxybenzyl hexyl benzoate, diethylhexyloxyphenol methoxyphenyl three

, Methylene bisbenzotriazole tetramethyl butyl phenol, phenyl benzimidazole sulfonic acid and dimethicone benzylidene malonate, select one or more oil-soluble UV absorbers (B) Liquid oil at 20°C (except for component (A)); (C) dextrin fatty acid ester; (D) hydrophobic silica 0.5% by mass or more and 2% by mass or less; and (E) A water-soluble polymer having structural units derived from (meth)acrylic acid or sulfonic acid.

、及雙乙基己氧基酚甲氧苯基三

等4種。 <2> The oil-in-water UV protection cosmetic as described in <1>, wherein the component (A) preferably contains at least 2-ethylhexyl p-methoxycinnamic acid and diethylaminoparaben Two types such as hexyl benzoate, more preferably at least p-methoxycinnamic acid-2-ethylhexyl, diethylamino hydroxybenzyl hexyl benzoate, 2,4,6-ginseng [4-(2-Ethylhexyloxycarbonyl)anilino]-1,3,5-tris

, And diethylhexyloxyphenol methoxyphenyl tri

Etc. 4 kinds.

<3> The oil-in-water UV protection cosmetic as described in <1> or <2>, wherein the content of component (A) relative to the entire cosmetic is preferably 0.6% by mass or more, more preferably 2 mass % Or more, particularly good system is 5% by mass or more, best system is 8% by mass or more, and preferably system is 30% by mass or less, more preferably system is 25% by mass or less, particularly good system is 18% by mass or less, and best system is 16% by mass the following.

<4> The oil-in-water type ultraviolet protective cosmetics as described in any one of <1> to <3>, wherein, in the cosmetics, the content of component (A) in the total amount of the ultraviolet absorber is preferably 90% by mass or more, more preferably 95% by mass or more.

<5> The oil-in-water UV protection cosmetic as described in any one of <1> to <4>, wherein the component (B) contains: (B1) ester oil that is liquid at 20°C, (B2 ) Polysiloxane oil that is liquid at 20°C, or (B3) Hydrocarbon oil that is liquid at 20°C, and ether oil with an HLB of less than 1, higher fatty acids, and higher alcohols. The above oil agent preferably contains at least (B1) or (B2), and more preferably contains (B1) and (B2).

<6> The oil-in-water UV protection cosmetic as described in any one of <1> to <5>, wherein the content of component (B) is preferably 0.5% by mass or more, more preferably 1% by mass or more, The particularly preferred system is 2% by mass or more, preferably 12% by mass or less, more preferably 8% by mass or less, and particularly preferred system is 7% by mass or less.

<7> The oil-in-water UV protection cosmetic as described in any one of <1> to <6>, wherein the component (C) is an ester of a fatty acid and dextrin; the carbon number of the fatty acid is preferably 8~ 24. More preferably, the carbon number is 14-18, the above-mentioned fatty acid is a linear or branched saturated or unsaturated fatty acid, and the average degree of polymerization of the above-mentioned dextrin is preferably 10-50, more preferably 20-30.

<8> The oil-in-water UV protection cosmetic as described in any one of <1> to <7>, wherein the component (C) is selected from palmitic acid dextrin, palmitic acid/2-ethylhexanoic acid dextrin , Dextrin stearate, dextrin palmitic acid/dextrin stearate, dextrin oleate, dextrin isopalmitate, dextrin isostearate, and dextrin myristate.

<9> The oil-in-water UV protection cosmetic as described in any one of <1> to <8>, wherein the content of component (C) is preferably 0.2% by mass or more, more preferably 0.3% by mass or more , The most preferred system is 0.4% by mass or more, the best system is 0.6% by mass or more, and the best system is 1.5% by mass or less, more preferably is 1% by mass or less, the most preferred system is 0.7% by mass or less, and the best system is 0.6% by mass or less.

<10> The oil-in-water UV protection cosmetic as described in any one of <1> to <9>, wherein the total mass ratio of the component (A) and (B) to the component (C) ((A) +B)/C), preferably 10 or more, more preferably 20 or more, particularly preferably 30 or more, and preferably 90 or less, more preferably 60 or less, particularly preferably 50 or less.

<11> The oil-in-water UV protection cosmetic as described in any one of <1> to <10>, wherein the hydrophobization treatment of component (D) is dimethyl silyl treatment, trimethyl silyl treatment Chemical treatment, dimethylpolysiloxane treatment, dimethylsiloxane treatment, colloidal alkyl silylization treatment, alkyl silylization treatment, or methacrylic silylization treatment, preferably dimethyl siloxane Si-based treatment.

<12> The oil-in-water UV protection cosmetic as described in any one of <1> to <11>, wherein the average primary particle size of component (D) is preferably 5nm-50nm, more preferably 5nm-30nm , Especially good series 5nm~20nm.

<13> The oil-in-water UV protection cosmetic as described in any one of <1> to <12>, wherein the content of component (D) is 0.5% by mass or more, preferably 0.7% by mass or more, more It is preferably 0.8% by mass or more, and 2% by mass or less, more preferably 1.5% by mass or less, and more preferably 1.3% by mass or less.

<14> The oil-in-water UV protection cosmetic as described in any one of <1> to <13>, wherein the total mass ratio of the components (A) and (B) to the mass ratio of the component (D) ((A) +B)/D), preferably 8 or more, more preferably 12 or more, particularly preferably 15 or more, and preferably 40 or less, more preferably 35 or less, particularly preferably 30 or less, and most preferably 22 or less.

<15> The oil-in-water UV protection cosmetic as described in any one of <1> to <14>, wherein the component (E) is selected from methacrylic acid, acrylic acid, methacrylate, acrylate, and The monomer selected in the acrylamide and the acrylamide is a homopolymer of constituent units, or a copolymer containing two or more of these monomers, and stearyloxy PG hydroxyethyl cellulose One or more selected from Na sulfonic acid.

<16> The oil-in-water type ultraviolet protective cosmetics as described in any one of <1> or <15>, wherein the component (E) is a carboxyvinyl polymer, acrylic acid. Alkyl methacrylate copolymer, polypropylene amide, (acrylic acid Na/acrylic dimethyl taurine Na) copolymer, (hydroxyethyl acrylate/acrylic dimethyl taurine Na) copolymer It is a water-soluble polymer selected from polyacrylate-13 (acrylamide/ammonium acrylate) copolymer and polyacrylate-13.

<17> The oil-in-water UV protection cosmetic as described in any one of <1> to <16>, wherein the content of component (E) is preferably 0.02% by mass or more, more preferably 0.15% by mass or more , And preferably 1.0% by mass or less, more preferably 0.8% by mass or less.

<18> The oil-in-water UV protection cosmetic as described in any one of <1> to <17>, which further contains one or two selected components from a surfactant, a pH adjuster, and water above.

<19> The oil-in-water UV protection cosmetic as described in any one of <1> to <18>, wherein the dosage form is selected from gel, lotion, and cream.

<20> A method of using the oil-in-water UV-protective cosmetics, which includes the steps of applying the oil-in-water UV-protective cosmetics described in any one of the above <1>~<19> to the skin. The best line includes the steps of applying it to the scalp, face, body, hands and feet.

<21> A method for protecting against ultraviolet rays, which includes the steps of applying the oil-in-water type ultraviolet protecting cosmetics described in any one of <1> to <19> above to the skin.

[Example]

Next, the present invention will be described in more detail with examples.

(Examples 1 to 26 and Comparative Examples 1 to 7)

Manufacture of oil-in-water UV protection cosmetics (sunscreen cosmetics) with the composition shown in Tables 1 to 3, and improve the UV protection effect, the transparency of the preparation, the degree of no roughness when dry, and the durability of the adhesion to the skin. Evaluation. The results are shown in Table 1 to Table 3.

(How to make cosmetics)

In a blending tank filled with water at 25°C, component (E) or a surfactant as required is added while stirring to prepare a water phase. On the other hand, the component (A) and the component (B) are heated and stirred at 80°C, and the component (C) and the component (D) are further added to prepare an oil phase. Then, to the obtained water phase, other ingredients such as the above-mentioned oil phase and pH adjusters as required were added, and stirring was performed at 25°C to obtain the oil-in-water sunscreen cosmetics described in the tables. In addition, it is also possible to replace the above-mentioned component (D) and use untreated silicic anhydride and titanium oxide instead.

UV protection effect (SPF value)

On the PMMA board, evenly apply the cosmetic material to 1.4mg/cm ² for 1 minute, and dry it in the shade for 15 minutes. After the sample is dried, use an SPF analyzer (UV2000S manufactured by Labsphere, USA) to measure the transmittance of the absorption spectrum (wavelength 350nm) for a total of 9 places on the square PMMA board's midpoint, each vertex, and the midpoint of each vertex line. (%), find the average of 9 places. As a result, the SPF value (-) was obtained from the transmittance (%), as shown in the table.

Preparation transparency (visible light transmittance)

On black artificial leather (manufactured by Okamoto Shinwa Co., Ltd.), apply the cosmetic material ^{evenly at a rate of 2 mg/cm 2} for 1 minute, and dry it in the shade for 15 minutes. After the sample was dried, the lightness of the coating film was measured using a spectrophotometer (CM-2002, manufactured by MINOLTA), and the average of 5 places was obtained. The results are reported in the table according to the following criteria.

5 Brightness below 25

4 Brightness above 25 and below 30

3 Brightness above 30 and below 35

2 Brightness above 35 and below 40

1 Brightness above 40

No roughness when dry

Three professional examiners apply 0.02mL of cosmetic material to a circle with a diameter of 3cm on the inner forearm. Sensory evaluation is performed for the roughness of dryness. The standard is divided into 5 stages. When the roughness is not felt at all, it is rated as "5", and when the roughness is strongly felt is rated as "1". As a result, the average value of 3 reviewers is recorded in the table.

Maintain close contact with the skin

Three professional examiners apply 0.02 mL of cosmetic material to a circle with a diameter of 3 cm on the inner part of the forearm. Sensory evaluation was performed on the adhesion of the preparation to the skin after 5 minutes, 10 minutes, 15 minutes, 20 minutes, and 25 minutes after application. The evaluation criteria are divided into the following 4 stages, and the results are the average of 3 reviewers in the table.

5 The close feeling is still felt after 25 minutes.

4 Although there is a sense of close contact after 15 minutes, there is no sense of close contact after 20 minutes.

3 Although there is a sense of close contact after 10 minutes, there is no sense of close contact after 15 minutes.

Although there is a sense of close contact after 25 minutes, there is no sense of close contact after 10 minutes.

After 15 minutes, there is no sense of close contact.

*1：對甲氧基桂皮酸-2-乙基己酯(Uvinul MC80、BASF公司製)*2：2-[4-(二乙胺基)-2-羥苯甲醯基]苯甲酸己酯(Uvinul A PLUS GRANULAR、BASF公司製)*3：2,4-雙[{4-(2-乙基己氧基)-2-羥基}-苯基]-6-(4-甲氧苯基)-1,3,5-三

(Tinosorb S、BASF公司製)*4：2,4,6-參[4-(2-乙基己氧基羰基)苯胺基]-1,3,5-三

(Uvinul T-150、BASF公司製)*5：苯甲酸烷基酯(C12-C15)(Finsolv TN、Innospec Active Chemicals LLC公司製)*6：甲基聚矽氧烷(聚矽氧KF-96A-10CS、信越化學公司製)*7：液態異烷烴(PARLEAM EX、日油公司製)*8：棕櫚酸糊精(RHEOPEARL KL2、千葉製粉公司製)*9：肉豆蔻酸糊精(RHEOPEARL MKL2、千葉製粉公司製)*10：二甲基矽基化處理矽酸酐(矽石R972、粒徑16nm、日本矽石公司製)*11：三甲基矽基化處理矽酸酐(矽石RX200、粒徑12nm、日本矽石公司製)*12：三甲基矽基化處理矽酸酐(矽石RX50、粒徑30nm、日本矽石公司製)*13：二甲基聚矽氧烷處理矽酸酐(矽石RY200、粒徑12nm、日本矽石公司製)*14：烷基矽基化處理矽酸酐(矽石R805、粒徑12nm、日本矽石公司製) *15：矽酸酐(矽石200、粒徑12nm、日本矽石公司製)*16：微粒子氧化鈦．氫氧化鋁．硬脂酸混合物(MT-100TV、TAYCA公司製)*17：丙烯酸．甲基丙烯酸烷基酯共聚合體(PEMULEN TR-1、Lubrizol製)*18：丙烯酸．甲基丙烯酸烷基酯共聚合體(PEMULEN TR-2、Lubrizol製)*19：丙烯酸鈉．丙烯醯基二甲基牛磺酸酸鈉共聚合體/異十六烷/聚山梨酸酯80/淨化水(SIMULGEL EG(37.5%/22.5%/7.5%/32.5%)、SEPPIC公司製)*20：2-胺基-2-甲基-1-丙醇(AMP-ULTRA PC1000、ANGUS CHEMICAL COMPANY製)*21：聚氧乙烯-2-己基癸醚(EMULGEN 1620G、花王公司製)

*1: 2-Ethylhexyl p-methoxycinnamic acid (Uvinul MC80, manufactured by BASF) *2: 2-[4-(Diethylamino)-2-hydroxybenzyl]benzoic acid Ester (Uvinul A PLUS GRANULAR, manufactured by BASF) *3: 2,4-bis[{4-(2-ethylhexyloxy)-2-hydroxy}-phenyl]-6-(4-methoxybenzene Base) -1,3,5-three

(Tinosorb S, manufactured by BASF Corporation) *4: 2,4,6-gin[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-tri

(Uvinul T-150, manufactured by BASF) *5: Alkyl benzoate (C12-C15) (manufactured by Finsolv TN, Innospec Active Chemicals LLC) *6: Methyl polysiloxane (polysiloxane KF-96A -10CS, manufactured by Shin-Etsu Chemical Co.) *7: Liquid isoalkane (PARLEAM EX, manufactured by NOF Corporation) *8: Dextrin palmitate (RHEOPEARL KL2, manufactured by Chiba Flour Mills) *9: Dextrin myristate (RHEOPEARL MKL2) , Chiba Flour Milling Co., Ltd.) *10: Dimethyl silylated silicic anhydride (silica R972, particle size 16nm, manufactured by Japan Silica Corporation) *11: Trimethyl silylated silicic anhydride (silica RX200, Particle size 12nm, manufactured by Nippon Silica Corporation) *12: Trimethylsilicated silicic anhydride (Silica RX50, particle size 30nm, manufactured by Nippon Silica Corporation) *13: Dimethylpolysiloxane-treated silicic anhydride (Silica RY200, particle size 12nm, manufactured by Nippon Silica Corporation) *14: Alkyl silicidation treatment silicic anhydride (silica R805, particle size 12nm, manufactured by Nippon Silica Corporation) *15: Silicic anhydride (silica 200 , Particle size 12nm, manufactured by Japan Silica Corporation) *16: Fine particle titanium oxide. Aluminum hydroxide. Stearic acid mixture (MT-100TV, manufactured by TAYCA) *17: Acrylic acid. Alkyl methacrylate copolymer (PEMULEN TR-1, manufactured by Lubrizol) *18: Acrylic acid. Alkyl methacrylate copolymer (PEMULEN TR-2, manufactured by Lubrizol) *19: Sodium acrylate. Sodium acrylate dimethyl taurate copolymer/isohexadecane/polysorbate 80/purified water (SIMULGEL EG (37.5%/22.5%/7.5%/32.5%), manufactured by SEPPIC)*20 : 2-Amino-2-methyl-1-propanol (AMP-ULTRA PC1000, manufactured by ANGUS CHEMICAL COMPANY) *21: Polyoxyethylene-2-hexyl decyl ether (EMULGEN 1620G, manufactured by Kao Corporation)

It can be seen from Tables 1 to 3 that the oil-in-water UV-protective cosmetic preparations containing ingredients (A), (B), (C), (D) and (E) are transparent and have no rough skin when dry The astringency and the adhesion to the skin continue, and the UV protection effect is also good. On the other hand, a composition that does not contain one or both of the component (C) and the component (D), and the composition of the component (D) that is not hydrophobized silica, and the component (D) contains The composition whose amount exceeds the range of 0.5% by mass to 2% by mass is poor in terms of transparency, roughness, adhesion, and UV protection effect, and is not a better UV protection cosmetic .

Claims (5)

An oil-in-water UV protection cosmetics, containing the following ingredients (A), (B), (C), (D) and (E): (A) from: p-methoxycinnamic acid-2-ethyl Hexyl ester, 2,4,6-ginseng[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-tri

, 4-tertiary butyl-4'-methoxydibenzylmethane, octocrylene, dimethoxybenzylidene dioxyimidazolidinium propionate-2-ethylhexyl Ester, diethylamino hydroxybenzyl hexyl benzoate, diethylhexyloxyphenol methoxyphenyl three

, Methylene bisbenzotriazole tetramethyl butyl phenol, phenyl benzimidazole sulfonic acid and dimethicone benzylidene malonate, select one or more oil-soluble UV absorbers (B) Liquid oil at 20°C (except component (A)); (C) Dextrin fatty acid ester; (D) Hydrophobic silicon dioxide 0.7% by mass or more and 1.5% by mass or less; ( E) A water-soluble polymer having structural units derived from methacrylic acid, acrylic acid or sulfonic acid. For example, the oil-in-water UV protection cosmetic of claim 1, wherein the hydrophobic treatment of component (D) is dimethyl silyl treatment, trimethyl silyl treatment, dimethyl polysiloxane treatment, two Methyl siloxane treatment, amine alkyl silyl treatment, alkyl silyl treatment, or methacryl silyl treatment. Such as the oil-in-water UV protection cosmetic of claim 1, wherein the mass ratio ((A+B)/D) of the total of ingredients (A) and (B) to ingredient (D) is 8 or more and 40 or less . Such as the oil-in-water UV protection cosmetic of claim 1, wherein the mass ratio ((A+B)/C) of the total of ingredients (A) and (B) to ingredient (C) is 10 or more and 90 or less . For example, the oil-in-water UV protection cosmetic of claim 1, wherein the average primary particle size of component (D) is 5-50nm.