Water-in-oil emulsion cosmetics

Abstract

The present invention provides a water-in-oil emulsified cosmetic, which contains the following components (A), (B), (C) and (D): (A) silicone oil (excluding component (C)); (B) a solid organic ultraviolet absorber; (C) 0.2 to 20% by weight of silicone oil to which an alkyl group having 8 to 28 carbon atoms is added; and (D) ester oil, wherein the mass ratio of component (B) to component (C) (B) / (C) is 0.02 to 15.

Description

Technical Field

[0001] The invention relates to a water-in-oil emulsified cosmetic. Background Art

[0002] In order to protect the skin from the adverse effects of ultraviolet rays, skin cosmetics that can provide high ultraviolet protection effects have been required, and cosmetics that have excellent ultraviolet protection effects and excellent feel and stability have been studied. Among them, water-in-oil emulsion cosmetics are widely used because they are resistant to sweat and sebum and can effectively spread oil-soluble active ingredients on the skin.

[0003] For example, Patent Document 1 describes that water-in-oil emulsion cosmetics containing metal oxides in di(caprylic acid / capric acid) propylene glycol ester, caprylyl polymethylsiloxane, and silicone-coated silicone rubber spherical powders have excellent viscosity stability over time, feel in use (extension), and ultraviolet shielding effects. Patent Document 2 describes that sunscreen cosmetics containing hydrophobicized zinc oxide powder, volatile silicone, and alkyl polytrimethylsiloxane have excellent makeup durability and ease of cleaning. In addition, Patent Document 3 describes that water-in-oil emulsion cosmetics containing polar oils, hydrocarbon oils, polyoxyalkylene alkyl co-modified organic polysiloxanes, and surface-treated powders have excellent feel in use and dispersion stability of the powders.

[0004] (Patent Document 1) Japanese Patent Application Publication No. 2015-189671

[0005] (Patent Document 2) Japanese Patent Application Publication No. 2005-232069

[0006] (Patent Document 3) Japanese Patent Application Publication No. 2018-108952 Summary of the invention

[0007] The present invention relates to a water-in-oil emulsified cosmetic, which contains the following components (A), (B), (C) and (D):

[0008] (A) Silicone oil (excluding ingredient (C));

[0009] (B) solid organic ultraviolet absorbers;

[0010] (C) a silicone oil to which an alkyl group having 8 to 28 carbon atoms is added, wherein the content of the silicone oil is 0.2 to 20% by mass;

[0011] (D) ester oil,

[0012] The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

[0013] In addition, the present invention relates to a water-in-oil emulsified cosmetic comprising the following components (A), (B), (C), (D) and (E):

[0014] (A) one or more silicone oils selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane (excluding component (C));

[0015] (B) solid organic ultraviolet absorbers;

[0016] (C) a silicone oil to which an alkyl group having 8 to 28 carbon atoms is added, wherein the content of the silicone oil is 0.2 to 20% by mass;

[0017] (D) ester oil, the content of which is 1 to 20% by mass;

[0018] (E) polyether-modified silicone surfactant, the content of which is less than 5% by mass,

[0019] and contains 0.05 to 3% by mass of an oily gelling agent.

[0020] The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15. DETAILED DESCRIPTION

[0021] Existing cosmetics are still not able to fully meet the ultraviolet protection effect and feeling of use according to the current strict SPF standards.

[0022] In addition, when conventional cosmetics contain solid UV absorbers to make water-in-oil emulsified cosmetics, since solid organic UV absorbers are poorly soluble in water or various oils, it is difficult to uniformly and stably contain them in the cosmetics, and high SPF and UV protection effects cannot be obtained. In addition, when these ingredients are blended, there are problems such as unevenness or stickiness.

[0023] The present inventors have found that when a solid organic UV absorber is formulated into cosmetics using ester oil, these may separate if silicone oil is used in combination in consideration of the feel during use. However, by further using silicone oil to which an alkyl group is added at a specific ratio, the solid organic UV absorber can be uniformly and stably formulated into the cosmetics, and a water-in-oil emulsified cosmetic having a high UV protection effect, a non-sticky appearance, uniform application, and a polished smooth feel can be obtained.

[0024] The water-in-oil emulsified cosmetic of the present invention has a high UV protection effect, and the effect lasts for a long time. In addition, it can be applied evenly without feeling sticky, and can achieve a uniform and polished smooth skin look, and the makeup feel lasts for a long time. Furthermore, when achieving a polished smooth skin look, the skin texture looks smooth.

[0025] Furthermore, polished skin means that, by applying water-in-oil emulsified cosmetics, the skin is not flat but looks three-dimensional, plump and smooth, and the pores and fine skin irregularities are not noticeable compared to the skin without the application.

[0026] The silicone oil of component (A) used in the present invention is a silicone oil used in general cosmetics except component (C), and may be any of volatile silicone oil and non-volatile silicone oil, preferably a silicone oil that is liquid at 25° C. The so-called liquid means having fluidity, and also includes a creamy or pasty state.

[0027] Examples of the silicone oil of component (A) used in the present invention include modified silicone oils such as linear dimethylpolysiloxane, branched siloxane, cyclic dimethylsiloxane, phenyl-modified silicone, polyether-modified silicone, higher fatty acid ester-modified silicone, higher alkoxy-modified silicone, fluorine-modified silicone, and crosslinked organopolysiloxane. The silicone oil preferably contains one or more selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane, more preferably contains one or more selected from linear dimethylpolysiloxane and cyclic dimethylsiloxane, and further preferably contains cyclic dimethylsiloxane.

[0028] In volatile silicone oils, volatility means having a flash point of 35 to 87°C.

[0029] Examples of the volatile silicone oil include straight-chain dimethylpolysiloxanes such as dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), and dimethylpolysiloxane (2cs); branched-chain siloxanes such as ethyltrisiloxane, methylpolytrimethylsiloxane, and tetrakis(trimethylsilyl)silane; and cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0030] Among these, decamethylcyclopentasiloxane, dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), dimethylpolysiloxane (2cs), and methyltrimethicone are preferred.

[0031] Examples of the nonvolatile silicone oil include dimethylpolysiloxane, modified silicone oils such as higher fatty acid ester-modified silicone and higher alkoxy-modified silicone, and the like.

[0032] Among these, dimethylpolysiloxane is preferred.

[0033] Examples of dimethylpolysiloxane include straight-chain dimethylpolysiloxanes such as dimethylpolysiloxane (6cs), dimethylpolysiloxane (10cs), and dimethylpolysiloxane (20cs). Dimethylpolysiloxane (6cs) and dimethylpolysiloxane (10cs) are preferred, and dimethylpolysiloxane (6cs) is more preferred.

[0034] As component (A), a volatile silicone oil is preferred from the viewpoint of light feeling during use and long-lasting makeup.

[0035] In addition, as component (A), from the viewpoint of high ultraviolet protection effect, long-lasting effect, and making the skin after application present a polished and smooth skin makeup, volatile silicone oil is preferred, and more preferably, it contains one or more selected from decamethylcyclopentasiloxane, dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), dimethylpolysiloxane (2cs), and methyltrimethicone, and it is further preferred that it contains one or more selected from decamethylcyclopentasiloxane, dimethylpolysiloxane (2cs), and methyltrimethicone. Furthermore, it is further preferred that at least decamethylcyclopentasiloxane is contained.

[0036] One or more components (A) may be used. From the viewpoint of not being sticky and imparting water repellency to the skin after application of the cosmetic, the content of the component (A) is preferably 10% by mass or more, more preferably 15% by mass or more, and further preferably 20% by mass or more, and is preferably 55% by mass or less, more preferably 50% by mass or less, and further preferably 45% by mass or less in the total composition. In addition, the content of the component (A) is preferably 10 to 55% by mass, more preferably 15 to 50% by mass, and further preferably 20 to 45% by mass in the total composition.

[0037] In addition, component (A) can be used in one or more kinds, and from the viewpoint of high ultraviolet protection effect, long-lasting effect, making the skin after application present a polished smooth skin makeup, reducing stickiness, and imparting water repellency to the skin after application of cosmetics, the content is preferably 10% by mass or more, more preferably 15% by mass or more, further preferably 20% by mass or more, further more preferably 27% by mass or more, and preferably 55% by mass or less, more preferably 50% by mass or less, further preferably 45% by mass or less, further more preferably 34% by mass or less. In addition, the content of component (A) is preferably 10 to 55% by mass, more preferably 15 to 50% by mass, further preferably 20 to 45% by mass, further more preferably 27 to 34% by mass in the total composition.

[0038] The component (B) used in the present invention is a solid organic ultraviolet absorber. Here, the term "solid" means a solid at 25°C.

[0039] As the organic ultraviolet absorber of component (B), any one generally used in cosmetics may be used, and examples thereof include 4-tert-butyl-4'-methoxydibenzoylmethane, diethylaminohydroxybenzoyl hexyl benzoate, 2-ethylhexyl dimethoxybenzylidene dioxoimidazolinyl propionate, methylenebisbenzotriazolyl tetramethylbutylphenol, bisethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, etc. Among these, diethylaminohydroxybenzoyl hexyl benzoate, bisethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone are preferred from the viewpoints of good compatibility with component (A), improved ultraviolet protection effect of cosmetics, and sustained effect.

[0040] In addition, as component (B), from the viewpoint of high ultraviolet protection effect, long-lasting effect, and making the skin after application present a polished and smooth skin makeup, it is preferred to contain one or more selected from diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone, and more preferably one or more selected from diethylaminohydroxybenzoyl hexyl benzoate and bis-ethylhexyloxyphenol methoxyphenyl triazine. In addition, it is preferred to use diethylaminohydroxybenzoyl hexyl benzoate and bis-ethylhexyloxyphenol methoxyphenyl triazine in combination.

[0041] Component (B) can be used alone or in combination of two or more. From the viewpoint of having sufficient ultraviolet protection effect in a wide range of ultraviolet wavelengths, feeling of use, and stability, the content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and further preferably 0.5% by mass or more in the total composition, and preferably 10% by mass or less, more preferably 7% by mass or less, further preferably 5% by mass or less, and further more preferably 3% by mass or less. In addition, the content of component (B) is preferably 0.1 to 10% by mass, more preferably 0.2 to 7% by mass, further preferably 0.5 to 5% by mass, and further more preferably 0.5 to 3% by mass in the total composition.

[0042] In addition, component (B) can be used in combination of one or more, and from the perspective of having sufficient ultraviolet protection effect in a wide range of ultraviolet wavelengths, improving the feel of use and stability, making the skin after application present a smooth skin makeup like polished skin, and reducing stickiness, the content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, more preferably 0.5% by mass or more, and more preferably 1% by mass or more, and preferably 10% by mass or less, more preferably 7% by mass or less, more preferably 5% by mass or less, further more preferably 3% by mass or less, and particularly preferably 1.5% by mass or less. In addition, the content of component (B) is preferably 0.1-10% by mass, more preferably 0.2-7% by mass, more preferably 0.5-5% by mass, further more preferably 0.5-3% by mass, and particularly preferably 1-1.5% by mass in the total composition.

[0043] The silicone oil of component (C) used in the present invention is a silicone oil to which an alkyl group having 8 to 28 carbon atoms is added. The alkyl group preferably has 4 to 30 carbon atoms, more preferably 8 to 28 carbon atoms, from the viewpoint of better compatibility with components (A), (B) and (D), suppressing stickiness, and further improving makeup durability and smooth and even-textured makeup.

[0044] The silicone oil of component (C) is preferably composed of an alkyl group and silicone. It may also have a substituent other than an alkyl group having 8 to 28 carbon atoms, but from the viewpoint of good compatibility with component (B), reduced stickiness, and better makeup lasting properties, it is preferably not emulsifiable, and more preferably not having a polyoxyalkylene group.

[0045] Component (C) is a silicone oil commonly used in cosmetics, and examples thereof include caprylyl dimethicone, cetyl dimethicone, alkyl (C26-28) dimethicone, stearyl dimethicone, behenyl dimethicone, and (acrylate / stearyl acrylate / methacrylate dimethicone) copolymer.

[0046] Among them, caprylyl dimethicone, cetyl dimethicone, alkyl (C26-28) dimethicone, stearyl dimethicone, and behenyl dimethicone are preferred, and caprylyl dimethicone is more preferred.

[0047] The reason why the effect of the present invention can be obtained by adding such a component (C) to the water-in-oil emulsified cosmetic of the present invention is not yet clear, but one of the reasons is presumed to be that the component (C) has a certain degree of compatibility with any of the components (A), (B) and the component (D) described later, and when the components (A) to (D) are mixed to prepare the water-in-oil emulsified cosmetic, it will gently maintain the uniformity of the oil phase.

[0048] Component (C) can be used alone or in combination of two or more. From the perspective of good compatibility balance with components (A), (B) and (D), and further improvement of UV protection effect, reduction of stickiness, uniformity after coating, good degree of makeup durability, and polished smooth makeup feel, the content of component (C) is 0.2% by mass or more, preferably 0.3% by mass or more, more preferably 0.5% by mass or more, and 20% by mass or less, preferably 15% by mass or less, and more preferably 10% by mass or less in the total composition. In addition, the content of component (C) is 0.2-20% by mass, preferably 0.3-15% by mass, and more preferably 0.5-10% by mass in the total composition.

[0049] In addition, component (C) can be used alone or in combination of two or more. From the perspective of good compatibility balance with components (A), (B) and (D), and further improving the ultraviolet protection effect, reduction of stickiness, uniformity after coating, good degree of makeup durability, and smooth makeup feel like polishing, the content is 0.2% by mass or more, preferably 0.3% by mass or more, more preferably 0.5% by mass or more, and further more preferably 1.5% by mass or more in the total composition, and is 20% by mass or less, preferably 15% by mass or less, more preferably 10% by mass or less, and further more preferably 5% by mass or less. In addition, the content of component (C) is 0.2-20% by mass, preferably 0.3-15% by mass, more preferably 0.5-10% by mass, and further more preferably 1.5-5% by mass in the total composition.

[0050] In the present invention, the mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 or more, preferably 0.05 or more, more preferably 0.1 or more, and is 15 or less, preferably 5 or less, more preferably 4 or less, and further more preferably 3 or less, from the viewpoint of achieving a good balance of compatibility and further improving the effects of the present invention such as the ultraviolet protection effect. In addition, the mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15, preferably 0.02 to 5, more preferably 0.05 to 4, and further preferably 0.1 to 3.

[0051] In the present invention, the mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 or more, preferably 0.05 or more, more preferably 0.1 or more, and even more preferably 0.2 or more, and is 15 or less, preferably 5 or less, more preferably 4 or less, even more preferably 3 or less, and even more preferably 1 or less, from the viewpoint of achieving a good balance of compatibility, further improving the effects of the present invention such as the ultraviolet protection effect, reducing stickiness, and further improving the uniformity after application, the degree of good makeup lastingness, and the polished smooth makeup feel. In addition, the mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15, preferably 0.02 to 5, more preferably 0.05 to 4, even more preferably 0.1 to 3, and even more preferably 0.2 to 1.

[0052] In the present invention, the mass ratio (C) / (A) of component (C) relative to component (A) is preferably 0.005 or more, more preferably 0.01 or more, and more preferably 0.015 or more, and preferably 0.5 or less, more preferably 0.4 or less, and more preferably 0.3 or less, from the viewpoint of making the compatibility balance good and further improving the effects of the present invention such as the ultraviolet protection effect. In addition, the mass ratio (C) / (A) of component (C) relative to component (A) is preferably 0.005 to 0.5, more preferably 0.01 to 0.4, and more preferably 0.015 to 0.3.

[0053] In addition, in the present invention, the mass ratio (C) / (A) of component (C) relative to component (A) is preferably 0.005 or more, more preferably 0.01 or more, more preferably 0.015 or more, and more preferably 0.045 or more, and preferably 0.5 or less, more preferably 0.4 or less, more preferably 0.3 or less, and more preferably 0.2 or less, from the viewpoint of making the compatibility balance good, further improving the effects of the present invention such as the ultraviolet protection effect, and making the skin after application present a polished and smooth skin makeup. In addition, the mass ratio (C) / (A) of component (C) relative to component (A) is preferably 0.005 to 0.5, more preferably 0.01 to 0.4, more preferably 0.015 to 0.3, and more preferably 0.045 to 0.2.

[0054] The ester oil of component (D) used in the present invention is not limited as long as it is generally used in cosmetics. It is preferably an ester oil that is liquid at 25° C., and examples thereof include isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, butyl stearate, oleyl oleate, isotridecyl isononanoate, isostearyl myristate, octyldodecyl ricinoleate, diglyceryl monoisostearate, ethylhexyl palmitate, and cetyl ethylhexanoate. , ethylhexyl methoxycinnamate, tocopheryl acetate, propylene carbonate, diisostearyl malate, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, diglyceryl diisostearate, propylene glycol diisostearate, monomyristic glyceryl monoisostearate, triisostearate, propylene glycol di(caprylic acid / capric acid), tri(caprylic acid / capric acid) glyceryl, triethylhexanoin, tri-2-ethylhexanoic acid Methylolpropane, trimethylolpropane triisostearate, pentaerythrityl tetraoctanoate, pentaerythrityl tetraethylhexanoate, pentaerythrityl tetraisostearate, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-6 octaoctanoate, (isostearate / sebacic acid) ditrimethylolpropane oligoester, dipentaerythrityl tripolyhydroxystearate, phytosteryl / octyl dodecyl lauroyl glutamate Ester oils such as esters of 1, 2, 3, 4, 5-deg. C (4-alkyl) esters, trehalose isostearate, dipentaerythritol tetraisostearate, dipentaerythritol pentaisostearate, ethylhexyl hydroxystearate, phytosterol fatty acid esters, cholesterol fatty acid esters, polyglycerol fatty acid esters, pentaerythritol fatty acid esters, etc.; vegetable oils such as avocado oil, macadamia oil, olive oil, rapeseed oil, sesame oil, wheat germ oil, linseed oil, cottonseed oil, soybean oil, palm oil, coconut oil, castor oil, jojoba oil, sunflower seed oil, tea oil, corn oil, etc.

[0055] Among these, esters of fatty acids and primary alcohols such as isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, butyl stearate, oleyl oleate, isotridecyl isononanoate, isostearyl myristate, octyldodecyl ricinoleate, diglyceryl monoisostearate, ethylhexyl palmitate, cetyl ethylhexanoate, and ethylhexyl methoxycinnamate are preferred from the viewpoint of dissolving the component (B) and improving the uniformity of the component (B) in the coating film. Furthermore, ethylhexyl methoxycinnamate is more preferred from the viewpoint of further improving the ultraviolet protection effect over a wide range of ultraviolet wavelengths.

[0056] In addition, from the viewpoints of high ultraviolet protection effect, long-lasting effect, dissolving component (B), improving uniformity of component (B) in the coating film, and making the skin after application present a polished and smooth skin makeup, it is preferred to contain one or more selected from 2-ethylhexyl p-methoxycinnamate, isononyl isononanoate, neopentyl glycol dicaprate, and diisostearyl malate, and more preferably one or more selected from 2-ethylhexyl p-methoxycinnamate and diisostearyl malate. In addition, it is preferred to contain at least 2-ethylhexyl p-methoxycinnamate.

[0057] Component (D) can be used alone or in combination of two or more. From the viewpoint of long-lasting makeup and feeling of use, the content is preferably 1% by mass or more, more preferably 2% by mass or more, and further preferably 5% by mass or more in the total composition, and is preferably 20% by mass or less, more preferably 18% by mass or less, and further preferably 15% by mass or less. In addition, the content of component (D) is preferably 1 to 20% by mass, more preferably 2 to 18% by mass, and further preferably 5 to 15% by mass in the total composition.

[0058] In addition, component (D) can be used as one or a combination of two or more, from the perspective of improving the makeup durability and feel of use, high ultraviolet protection effect, and the effect lasts for a long time, so that the skin after application presents a polished and smooth skin makeup, the content is preferably 1% by mass or more, more preferably 2% by mass or more, and more preferably 5% by mass or more, and preferably 20% by mass or less, more preferably 18% by mass or less, more preferably 15% by mass or less, and further more preferably 8% by mass or less. In addition, the content of component (D) is preferably 1-20% by mass, more preferably 2-18% by mass, more preferably 5-15% by mass, and further more preferably 5-8% by mass in the total composition.

[0059] In the present invention, the mass ratio (D) / (C) of the component (D) to the component (C) is preferably 0.5 or more, more preferably 0.7 or more, and even more preferably 1 or more, and is preferably 50 or less, more preferably 30 or less, and even more preferably 20 or less, from the viewpoint of achieving a good balance of the compatibility of the components (A) to (D) and further improving the effects of the present invention such as the ultraviolet protection effect. The mass ratio (D) / (C) of the component (D) to the component (C) is preferably 0.5 to 50, more preferably 0.7 to 30, and even more preferably 1 to 20.

[0060] In the present invention, the mass ratio (D) / (C) of the component (D) to the component (C) is preferably 0.5 or more, more preferably 0.7 or more, and even more preferably 1 or more, and is preferably 50 or less, more preferably 30 or less, even more preferably 20 or less, and even more preferably 5 or less, from the viewpoint of making the compatibility of the components (A) to (D) better balanced, further improving the effects of the present invention such as the ultraviolet protection effect, and making the skin after application have a polished and smooth skin makeup. In addition, the mass ratio (D) / (C) of the component (D) to the component (C) is preferably 0.5 to 50, more preferably 0.7 to 30, even more preferably 1 to 20, and even more preferably 1 to 5.

[0061] In the water-in-oil emulsified cosmetic of the present invention, from the viewpoint of not feeling sticky and further improving the long-lasting makeup property, the content of the (E) silicone surfactant is preferably less than 5% by mass, more preferably 4.5% by mass or less, further preferably 4.0% by mass or less, further more preferably 2% by mass or less, and particularly preferably 0.5% by mass or less. In addition, from the viewpoint of not feeling sticky, further improving the long-lasting makeup property, and improving the storage stability, it is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and further preferably 0.3% by mass or more.

[0062] Examples of silicone surfactants include dimethylpolysiloxanes having polyoxyethylene groups or polyoxypropylene groups, or dimethylpolysiloxanes to which polyethylene glycol is added, which are silicone surfactants commonly used in cosmetics. In addition, dimethylpolysiloxanes may be partially fluorinated.

[0063] As the silicone-based surfactant, from the viewpoint of having a high UV protection effect, the effect lasting for a long time, and giving the skin a polished and smooth look after application, a polyether-modified silicone-based surfactant is preferred, and a dimethylpolysiloxane having a polyoxyethylene group or a polyoxypropylene group is more preferred, and a dimethylpolysiloxane having at least a polyoxyethylene group is further preferred.

[0064] Furthermore, it is preferred that the silicone-based surfactant does not include cross-linked silicone.

[0065] Such silicone-based surfactants preferably have an HLB of 12 or less.

[0066] In addition, from the viewpoint of high UV protection effect, long-lasting effect, and giving the skin a polished and smooth look after application, the HLB is preferably 1 or more, more preferably 3 or more, and is preferably 12 or less, more preferably 10 or less, further preferably 8 or less, and further more preferably 6 or less.

[0067] Here, HLB (Hydrophilic-Lipophilic Balance) represents the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant, and is obtained by the Griffin formula. In addition, when composed of two or more silicone-type surfactants, the HLB of the mixed surfactant is obtained as follows. The HLB of the mixed surfactant is obtained by adding and averaging the HLB values ​​of the silicone-type surfactants at their mixing ratios.

[0068] Mixed HLB = Σ(HLBx×Wx) / ΣWx

[0069] HLBx represents the HLB value of the silicone-based surfactant X.

[0070] Wx represents the mass (g) of the silicone-based surfactant X having the value of HLBx.

[0071] The water-in-oil emulsified cosmetic of the present invention may further contain (F) fine particles of a metal oxide, thereby further improving the ultraviolet protection effect.

[0072] The metal oxide is a metal oxide generally used in cosmetics, and examples thereof include titanium oxide, zinc oxide, iron oxide, cerium oxide, and chromium oxide.

[0073] The shape of the fine-particle metal oxide powder is not particularly limited, and may be any of spherical, flake, rod, spindle, needle, amorphous, and the like.

[0074] The average primary particle size of the fine metal oxide is preferably 0.005 to 0.2 μm, more preferably 0.01 to 0.1 μm, from the viewpoint of improving the ultraviolet protection effect. The average primary particle size is a catalog value or is measured using a transmission electron microscope.

[0075] These fine-particle metal oxides may be used as they are or may be used after being subjected to a hydrophobic treatment.

[0076] The hydrophobic treatment is not limited as long as it is a treatment applied to ordinary cosmetic powders, and can be performed by dry treatment, wet treatment, etc. using a surface treatment agent such as fluorine compounds, silicone compounds, metal soaps, amino acid compounds, lecithin, alkyl silane, oils, and organic titanates.

[0077] Specific examples of the surface treatment agent include fluorine compounds such as perfluoropolyether, perfluoroalkyl phosphate, perfluoroalkyl alkoxysilane, and fluorine-modified silicone; silicone compounds such as dimethylpolysiloxane, methylhydrogenpolysiloxane, cyclic silicone, single-terminal or double-terminal trialkoxy-modified organopolysiloxane, cross-linked silicone, silicone resin, fluorine-modified silicone resin, and acrylic modified silicone; metal soaps such as aluminum stearate, aluminum myristate, zinc stearate, and magnesium stearate; proline, hydroxyproline, and the like; Amino acid compounds such as lysine, alanine, glycine, sarcosine, glutamic acid, aspartic acid, lysine and their derivatives, acylated amino acids; lecithin, hydrogenated lecithin; alkyl silanes such as methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, triethoxyoctylsilane; oils such as polyisobutylene, waxes, greases, fatty acids; organic titanates such as isopropyl triisostearyl titanate, etc.

[0078] The hydrophobic treatment can be performed by a common method.

[0079] The amount of the hydrophobic treatment is preferably 0.1 to 15% by mass, more preferably 1 to 12% by mass, based on the amount of the coated powder, from the viewpoint of improving dispersibility in a solvent.

[0080] As component (F), zinc oxide and titanium oxide are preferred from the viewpoint of long-lasting makeup and improvement of ultraviolet protection effect.

[0081] Component (F) can be used alone or in combination of two or more. From the viewpoint of further improving the ultraviolet protection effect, its content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and more preferably 0.5% by mass or more in the total composition, and is preferably 40% by mass or less, more preferably 35% by mass or less, and more preferably 30% by mass or less. In addition, the content of component (F) is preferably 0.1 to 40% by mass, more preferably 0.2 to 35% by mass, and more preferably 0.5 to 30% by mass in the total composition.

[0082] The water-in-oil emulsified cosmetic of the present invention may further contain (G) a coloring pigment from the viewpoint of blurring and making less noticeable skin defects such as spots, skin texture, and pores.

[0083] Examples of the coloring pigments include coloring pigments commonly used in cosmetics, such as titanium oxide, zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, Prussian blue, ultramarine, chromium oxide, chromium hydroxide and other metal oxides, manganese violet, metal complexes such as cobalt titanate, and inorganic pigments such as carbon black; Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 229, Red No. 230, Red No. 231, Red No. 232, Red No. 233, Red No. 234, Red No. 235, Red No. 236, Red No. 237, Red No. 238, Red No. 239, Red No. 240, Red No. 241, Red No. 243, Red No. 244, Red No. 245, Red No. 246, Red No. 247, Red No. 248, Red No. 249, Red No. 250, Red No. 251, Red No. 252, Red No. 253, Red No. 254, Red No. 255, Red No. 256, Red No. 257, Red No. 258, Red No. 259, Red No. 261, Red No. 262, Red No. 263, Red No. 264, Red No. 265, Red No. 266, Red No. 267, Red No. 268, Red No. 269, Red No. 270, Red No. 271 Synthetic organic pigments, organic pigments and their lake pigments such as Red No. 7, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, and Blue No. 404; natural organic pigments such as β-carotene, caramel, and paprika pigment, etc., and the like, can be listed as composites of these coloring pigments, mixed pigments obtained by diluting these coloring pigments with body pigments such as barium sulfate or talc, etc.

[0084] Furthermore, the metal oxide used in the component (G) excludes those corresponding to the component (F).

[0085] These coloring pigments may be used as they are, or may be used after further subjecting them to a hydrophobic treatment similarly to the component (F).

[0086] Component (G) can be used alone or in combination of two or more. From the viewpoint of blurring spots or skin texture, pores and other skin defects and making them less noticeable, its content is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, and further preferably 0.05% by mass or more in the total composition, and preferably 35% by mass or less, more preferably 30% by mass or less, and further preferably 25% by mass or less. In addition, the content of component (G) is preferably 0.01 to 35% by mass, more preferably 0.02 to 30% by mass, and further preferably 0.05 to 25% by mass in the total composition.

[0087] In addition, component (G) can be used as one or in combination of two or more, and from the viewpoint of blurring spots or skin texture, pores and other skin defects, making them inconspicuous, and making the skin after application present a polished and smooth skin makeup, its content is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, further preferably 0.05% by mass or more, further more preferably 0.1% by mass or more, particularly preferably 2% by mass or more, and preferably 35% by mass or less, more preferably 30% by mass or less, further preferably 25% by mass or less, further more preferably 21% by mass or less, particularly preferably 5% by mass or less. In addition, the content of component (G) is preferably 0.01-35% by mass, more preferably 0.02-30% by mass, further preferably 0.05-25% by mass, further more preferably 0.1-21% by mass, particularly preferably 2-5% by mass in the total composition.

[0088] The water-in-oil emulsified cosmetic of the present invention can obtain a high UV protection effect by containing components (A) to (D), and further, by containing a coloring pigment (G), it can also obtain an effect of blurring the skin's texture, pores and other skin defects to make them less noticeable. From the viewpoint of blurring spots or skin's texture, pores and other skin defects to make them less noticeable, it is preferred to contain such a component (G) in the composition; on the other hand, there is also a situation where the content of component (A) or component (D) is reduced due to the inclusion of component (G), and it is difficult to obtain a balance with component (B). In the present invention, in such a case, even when the total content of components (A), (C) and (D) is 50% by mass or less, and further 35% by mass or less, the effect of the present invention can be fully exerted while maintaining a good balance of each component, and the effect of making skin defects less noticeable can also be achieved, which is preferred from this point of view.

[0089] The water-in-oil emulsion cosmetic of the present invention can be made into a color cosmetic by containing components (F) and (G), and a color cosmetic having a high UV protection effect, a good feeling of use, and an excellent color cosmetic effect can be obtained. In this case, it is particularly suitable as a primer, foundation, concealer, etc. In addition, from the viewpoint of improving the adhesion to the skin and improving the durability of makeup, components (F) and (G) are preferably subjected to a hydrophobic treatment.

[0090] The water-in-oil emulsified cosmetic of the present invention may further contain an oily gelling agent, thereby achieving a higher ultraviolet protection effect.

[0091] Such an oily gelling agent is an oily gelling agent generally used in cosmetics, and any oily gelling agent may be used as long as it can increase the viscosity of the oil phase.

[0092] Examples of the oily gelling agent include organically modified clay minerals, crosslinked organopolysiloxanes, dextrin fatty acid esters, metal soaps, sucrose fatty acid esters, and oily components (waxes) that are solid at 25°C.

[0093] As the organic modified clay mineral, any clay mineral commonly used in cosmetics can be used without limitation. For example, preferably, a cationic modified clay mineral is obtained by treating a layered clay mineral such as bentonite, laponite, hectorite, montmorillonite, or magnesium aluminum silicate with a quaternary ammonium salt type cationic surfactant.

[0094] Here, the quaternary ammonium salt type cationic surfactant is a substance represented by the following formula (1):

[0095] 〔R 1 R 2 R 3 R 4 N〕+X - (1)

[0096] (Where R 1 represents an alkyl group having 10 to 22 carbon atoms or a benzyl group, R 2 represents a methyl group or an alkyl group having 10 to 22 carbon atoms, R 3 and R 4 represents an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms, and X represents a halogen atom or a methyl sulfate residue).

[0097] Specific examples thereof include dodecyltrimethylammonium chloride, myristyltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, myristyldimethylethylammonium chloride, cetyldimethylethylammonium chloride, stearyldimethylethylammonium chloride, behenyldimethylethylammonium chloride, myristyldiethylmethylammonium chloride, cetyldiethylmethylammonium chloride, stearyldiethylmethylammonium chloride, behenyldiethylmethylammonium chloride, benzyldimethylmyristylammonium chloride, benzyldimethylcetylammonium chloride, benzyldimethylstearylammonium chloride, benzyldimethylbehenylammonium chloride, benzylmethylethylcetylammonium chloride, benzylmethylethylstearylammonium chloride, distearyldimethylammonium chloride, dibehenyldihydroxyethylammonium chloride, and compounds obtained by replacing the chlorides of the above compounds with bromides, and dipalmitoylpropylethylammonium methylsulfate.

[0098] Among them, benzyldimethylstearylammonium chloride and dimethyldistearylammonium chloride are preferred, and dimethyldistearylammonium chloride is more preferred.

[0099] As the cationic modified clay mineral obtained by treating the layered clay mineral with a quaternary ammonium salt type cationic surfactant, dimethyl distearyl ammonium hectorite, dimethyl distearyl ammonium bentonite, benzyl dimethyl stearyl ammonium hectorite, etc. are preferred, and dimethyl distearyl ammonium hectorite is more preferred. In addition, as commercially available products, Bentone 38, Bentone 38VCG, Bentone 27 (all manufactured by Elementis Japan Corporation) and the like can be cited.

[0100] From the viewpoint of improving the workability and the viewpoint of being excellent in the thickening effect of the oil, the organically modified clay mineral may be used as a dispersion diluted with a solvent.

[0101] Specifically, it is preferred to use a premixed gel in which an organic modified clay mineral is dispersed in a solvent in advance. The solvent is not limited as long as it can be thickened by the organic modified clay mineral, and from the viewpoint of the thickening effect of the oil, octyldodecanol, mineral oil, volatile silicone oil, etc. are preferred.

[0102] The content of the organically modified clay mineral in the premixed gel is preferably 5 to 25% by mass, more preferably 10 to 20% by mass, and even more preferably 10 to 18% by mass, from the viewpoint of improving workability, the oil thickening effect, and the viewpoint of suppressing oil separation of the oily gel itself after thickening.

[0103] As the premixed gel, commercially available products such as Bentone Gel EUGV containing 10% by mass of a cation-modified clay mineral, Bentone Gel MIOV containing 18% by mass of a cation-modified clay mineral, and Bentone Gel PTM containing 15% by mass of a cation-modified clay mineral (all manufactured by Elementis Japan Corporation) can be used.

[0104] Examples of the cross-linked organopolysiloxane include cross-linked dimethylpolysiloxane and cross-linked alkylpolysiloxane. Furthermore, cross-linked polyether-modified silicone may also be used.

[0105] The cross-linked dimethyl polysiloxane is a polymer having a cross-linked structure in which a siloxane skeleton is three-dimensionally cross-linked, and the cross-linked alkyl polysiloxane further has an alkyl group having 6 to 20 carbon atoms.

[0106] Among these, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenyl dimethicone) crosspolymer, (vinyl dimethicone / lauryl dimethicone) crosspolymer, alkyl (C30-45) cetearyl dimethicone crosspolymer, and cetearyl dimethicone crosspolymer are preferred.

[0107] These may be used directly in a solid state or uniformly mixed with a liquid oil. Among them, from the viewpoint of dispersibility and operability in cosmetics, it is preferred to use them as a diluted dispersion with a liquid oil, and silicone oil, hydrocarbon oil, and ester oil are preferably used, silicone oil and hydrocarbon oil are more preferably used, and dimethylpolysiloxane, decamethylcyclopentasiloxane, liquid paraffin, and light isoparaffin are further preferably used.

[0108] As the (dimethicone / vinyl dimethicone) cross-linked polymer, commercially available products such as KSG-15 which is a mixture with decamethylcyclopentasiloxane and KSG-16 which is a mixture with low-viscosity dimethylpolysiloxane (both manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

[0109] As the (dimethicone / phenyl dimethicone) cross-linked polymer, a commercially available product such as KSG-18 (manufactured by Shin-Etsu Chemical Co., Ltd.) which is a mixture with methylphenyl polysiloxane can be used.

[0110] In addition, as the (vinyl dimethicone / lauryl dimethicone) crosslinked polymer, commercially available products such as KSG-41 as a mixture with liquid paraffin, KSG-42 as a mixture with light isoparaffin, KSG-43 as a mixture with tri-2-ethylhexanoin, and KSG-44 as a mixture with squalane (all manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

[0111] As the alkyl (C30-45) cetearyl dimethicone crosspolymer, a commercially available product such as Velvesil 125 (manufactured by Momentive Performance Materials Inc.) which is a mixture with cyclopentasiloxane can be used.

[0112] As the cetearyl dimethicone crosspolymer, a commercially available product such as Velvesil DM (manufactured by Momentive Performance Materials Inc.) which is a mixture with dimethicone can be used.

[0113] Furthermore, as the cross-linked polyether-modified silicone, (dimethicone / (PEG-10 / 15)) cross-linked polymer, (PEG-15 / lauryl dimethicone) cross-linked polymer, and (PEG-10 / lauryl dimethicone) cross-linked polymer are preferred.

[0114] From the viewpoint of dispersibility and handling properties in cosmetics, the crosslinked polyether-modified silicone is preferably used as a dispersion diluted with a liquid oil, more preferably silicone oil, hydrocarbon oil, or ester oil, and even more preferably silicone oil or hydrocarbon oil.

[0115] Furthermore, it is preferably diluted or dispersed in a volatile hydrocarbon oil, and the volatile hydrocarbon oil is more preferably isododecane.

[0116] As cross-linked polyether-modified silicones, commercially available products such as KSG-210, KSG-240 (dimethicone / (PEG-10 / 15)) cross-linked polymers); KSG-310, KSG-320, KSG-330 ((PEG-15 / lauryl dimethicone) cross-linked polymers); and KSG-340 ((PEG-10 / lauryl dimethicone) cross-linked polymer and (PEG-15 / lauryl dimethicone) cross-linked polymer) (all manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

[0117] Dextrin fatty acid ester is an ester of fatty acid and dextrin. The carbon number of the fatty acid is preferably 8 to 24, more preferably 14 to 18, and the fatty acid is a linear or branched saturated or unsaturated fatty acid. In addition, the average degree of polymerization is preferably 10 to 50, more preferably 20 to 30.

[0118] Specific examples thereof include dextrin palmitate, dextrin palmitate / 2-ethylhexanoate, dextrin stearate, dextrin palmitate / stearate, dextrin oleate, dextrin isopalmitate, dextrin isostearate, and dextrin myristate.

[0119] Examples of commercial products thereof include dextrin palmitate (Rheopearl KL2, Rheopearl KS2, Rheopearl TL2), dextrin palmitate / 2-ethylhexanoate (Rheopearl TT2), and dextrin myristate (Rheopearl MKL2) manufactured by Chiba Flour Milling Co., Ltd.

[0120] Examples of the oily component that is solid at 25°C include waxes such as carnauba wax (melting point: 80 to 86°C), beeswax (melting point: 64°C), candelilla wax (melting point: 68 to 72°C), rice bran wax (melting point: 70 to 83°C), jojoba wax (melting point: 55°C), Japan wax (melting point: 55°C), jojoba oil (melting point: 46 to 54°C), and lanolin (melting point: 37 to 43°C); hydrogenated jojoba oil (melting point: 68°C), hydrogenated castor oil isostearate (melting point: 45°C), hydrogenated castor oil (melting point: 84°C), hydrogenated palm oil (melting point: 65°C), hydrogenated coconut oil (melting point: 70°C), cetyl palmitate (melting point: 50 ℃), ester oils such as eicosanedioic acid glyceryl behenate (melting point: 66℃), behenic acid glyceryl, tristearic acid glyceryl, tribehenic acid glyceryl, avocado butter (melting point: 36-45℃), dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) ester (melting point: 38℃), tri(caprylic acid, capric acid, myristic acid, stearic acid) glyceride (melting point: 40℃), oleic acid phytosteryl esters, macadamia fatty acid phytosteryl esters; ether oils such as batyl alcohol (melting point: 60-70℃), squalane alcohol (melting point: 60.5-61.5℃); higher alcohols such as stearyl alcohol (melting point: 58.0℃), behenyl alcohol (melting point: 70.5℃), etc.

[0121] As the oily gelling agent, from the viewpoint of imparting appropriate viscosity and uniformity of makeup feel to the coating film and further higher ultraviolet protection effect, organic modified clay minerals, crosslinked organopolysiloxanes, dextrin fatty acid esters, and oily components that are solid at 25°C are preferred. From the viewpoint of further improving dispersion stability and storage stability, organic modified clay minerals and oily components that are solid at 25°C are more preferred. Distearyldimethylammonium hectorite and tribehenin are further preferred.

[0122] In addition, as an oily gelling agent, from the viewpoint of imparting appropriate viscosity and uniformity of makeup to the coating film, further enhancing the ultraviolet protection effect, making the skin after application appear smooth like polished skin, and reducing stickiness, it is preferred to contain one or more selected from organic modified clay minerals, cross-linked organopolysiloxanes, dextrin fatty acid esters, and oily components that are solid at 25° C., more preferably one or more selected from organic modified clay minerals, cross-linked organopolysiloxanes, and oily components that are solid at 25° C., and further preferably one or more selected from organic modified clay minerals and cross-linked organopolysiloxanes. In addition, it is preferred to use an organic modified clay mineral and a cross-linked organopolysiloxane in combination.

[0123] One or more oily gelling agents may be used, and from the viewpoint of obtaining a higher ultraviolet protection effect, the content thereof is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, and further preferably 2% by mass or less in the total composition. In addition, the content of the oily gelling agent is preferably 0.05 to 5% by mass, more preferably 0.1 to 3% by mass, and further preferably 0.1 to 2% by mass in the total composition.

[0124] In addition, one or more oily gelling agents can be used. From the viewpoint of obtaining a higher UV protection effect, making the skin after application appear smooth like polished skin, and reducing stickiness, the content of the oily gelling agent is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and further more preferably 0.5% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less, and further more preferably 1.7% by mass or less. In addition, the content of the oily gelling agent is preferably 0.05-5% by mass, more preferably 0.1-3% by mass, further preferably 0.1-2% by mass, and further more preferably 0.5-1.7% by mass in the total composition.

[0125] In the present invention, the content of water is preferably 0.1 to 50% by mass, more preferably 1 to 30% by mass, and even more preferably 5 to 20% by mass in the total composition.

[0126] In addition to the above-mentioned ingredients, the cosmetics of the present invention may also contain ingredients commonly used in cosmetics, such as oil ingredients other than those mentioned above, powders other than those mentioned above, surfactants other than those mentioned above, water-soluble polymers, antioxidants, fragrances, pigments, preservatives, thickeners, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin revitalizers, moisturizers, cooling agents, etc.

[0127] The water-in-oil emulsified cosmetic of the present invention can be produced by a conventional method and can be prepared into a dosage form such as a liquid, emulsion, paste, cream, gel, or the like.

[0128] In addition, the water-in-oil emulsified cosmetics of the present invention can be used as primers, foundations, concealers; color cosmetics such as blush, eye shadow, mascara, eyeliner, eyebrow pencil, fixative, lipstick, etc.; UV protection cosmetics such as sunscreen lotions and sunscreen creams; skin care cosmetics such as skin care lotions, skin care creams, BB creams, and essences, etc. Among them, UV protection cosmetics or color cosmetics are preferred. In addition, it is suitable as a color cosmetic containing components (F) and (G).

[0129] Regarding the above-mentioned embodiment, the present invention further discloses the following composition.

[0130] <1> A water-in-oil emulsified cosmetic comprising the following ingredients (A), (B), (C) and (D):

[0131] (A) Silicone oil (excluding ingredient (C));

[0132] (B) solid organic ultraviolet absorbers;

[0133] (C) 0.2 to 20% by mass of silicone oil to which an alkyl group having 8 to 28 carbon atoms is added;

[0134] (D) ester oil,

[0135] The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

[0136] <2> As mentioned above <1> In the water-in-oil emulsified cosmetic, component (A) preferably contains one or more selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane, more preferably contains one or more selected from linear dimethylpolysiloxane and cyclic dimethylsiloxane, and further preferably contains cyclic dimethylsiloxane.

[0137] <3> As mentioned above <1> or <2> The water-in-oil emulsified cosmetic, wherein component (A) is preferably volatile silicone oil, more preferably contains one or more selected from decamethylcyclopentasiloxane, dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), dimethylpolysiloxane (2cs), methyltrimethicone, further preferably contains one or more selected from decamethylcyclopentasiloxane, dimethylpolysiloxane (2cs), methyltrimethicone, and further more preferably contains at least decamethylcyclopentasiloxane.

[0138] <4> As mentioned above <1> to <3> The water-in-oil emulsified cosmetic according to any one of the preceding claims, wherein the content of component (A) is preferably 10% by mass or more, more preferably 15% by mass or more, further preferably 20% by mass or more, further more preferably 27% by mass or more, and is preferably 55% by mass or less, more preferably 50% by mass or less, further preferably 45% by mass or less, further more preferably 34% by mass or less in the total composition.

[0139] <5> As mentioned above <1> to <4> The water-in-oil emulsified cosmetic described in any one of the above, wherein component (B) preferably contains one or more selected from diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone, more preferably contains one or more selected from diethylaminohydroxybenzoyl hexyl benzoate and bis-ethylhexyloxyphenol methoxyphenyl triazine, and preferably combines diethylaminohydroxybenzoyl hexyl benzoate with bis-ethylhexyloxyphenol methoxyphenyl triazine.

[0140] <6> As mentioned above <1> to <5> The water-in-oil emulsified cosmetic according to any one of the preceding claims, wherein the content of component (B) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.5% by mass or more, further more preferably 1% by mass or more, and is preferably 10% by mass or less, more preferably 7% by mass or less, further preferably 5% by mass or less, further more preferably 3% by mass or less, particularly preferably 1.5% by mass or less in the total composition.

[0141] <7> As mentioned above <1> to <6> The water-in-oil emulsified cosmetic described in any one of the preceding claims, wherein the component (C) is preferably caprylyl polymethicone, cetyl polydimethicone, alkyl (C8-28) polydimethicone, stearyl polydimethicone, behenyl polydimethicone, and more preferably caprylyl polymethicone.

[0142] <8> As mentioned above <1> to <7> The water-in-oil emulsified cosmetic described in any one of the preceding claims, wherein the content of component (C) is preferably 0.2% by mass or more, more preferably 0.3% by mass or more, further preferably 0.5% by mass or more, further more preferably 1.5% by mass or more, and is preferably 20% by mass or less, more preferably 15% by mass or less, more preferably 10% by mass or less, further more preferably 5% by mass or less in the total composition.

[0143] <9> As mentioned above <1> to <8> The water-in-oil emulsified cosmetic according to any one of the preceding claims, wherein the mass ratio (B) / (C) of component (B) to component (C) is preferably 0.05 or more, more preferably 0.1 or more, even more preferably 0.2 or more, and is preferably 5 or less, more preferably 4 or less, even more preferably 3 or less, even more preferably 1 or less.

[0144] <10> As mentioned above <1> to <9> The water-in-oil emulsified cosmetic according to any one of the preceding claims, wherein the mass ratio (C) / (A) of the component (C) to the component (A) is preferably 0.005 or more, more preferably 0.01 or more, further preferably 0.015 or more, further more preferably 0.045 or more, and is preferably 0.5 or less, more preferably 0.4 or less, further preferably 0.3 or less, further more preferably 0.2 or less.

[0145] <11> As mentioned above <1> to <10> The water-in-oil emulsified cosmetic described in any one of the above, wherein the component (D) preferably contains one or more selected from 2-ethylhexyl p-methoxycinnamate, isononyl isononanoate, neopentyl glycol dicaprate, and diisostearyl malate, more preferably contains one or more selected from 2-ethylhexyl p-methoxycinnamate and diisostearyl malate, and preferably contains at least 2-ethylhexyl p-methoxycinnamate.

[0146] <12> As mentioned above <1> to <11> The water-in-oil emulsified cosmetic described in any one of the preceding claims, wherein the content of component (D) is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 5% by mass or more, and is preferably 20% by mass or less, more preferably 18% by mass or less, even more preferably 15% by mass or less, even more preferably 8% by mass or less in the total composition.

[0147] <13> As mentioned above <1> to <12> The water-in-oil emulsified cosmetic according to any one of the preceding claims, wherein the mass ratio (D) / (C) of component (D) to component (C) is preferably 0.5 or more, more preferably 0.7 or more, even more preferably 1 or more, and is preferably 50 or less, more preferably 30 or less, even more preferably 20 or less, even more preferably 5 or less.

[0148] <14> As mentioned above <1> to <13> In any one of the water-in-oil emulsified cosmetics, the content of the (E) silicone surfactant is preferably less than 5% by mass, more preferably 4.5% by mass or less, further preferably 4.0% by mass or less, further more preferably 2% by mass or less, particularly preferably 0.5% by mass or less, and is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.3% by mass or more.

[0149] <15> As mentioned above <14> In the water-in-oil emulsified cosmetic, the (E) silicone surfactant is preferably a polyether-modified silicone surfactant, more preferably a dimethyl polysiloxane having a polyoxyethylene group or a polyoxypropylene group, and further preferably a dimethyl polysiloxane having at least a polyoxyethylene group.

[0150] <16> As mentioned above <14> or <15> In the water-in-oil emulsified cosmetic, the (E) silicone surfactant preferably has an HLB of 1 or more, more preferably 3 or more, and preferably 12 or less, more preferably 10 or less, further preferably 8 or less, and further more preferably 6 or less.

[0151] <17> As mentioned above <1> to <16> The water-in-oil emulsified cosmetic described above preferably further contains (F) fine particles of a metal oxide, more preferably zinc oxide or titanium oxide.

[0152] <18> As mentioned above <17> In the water-in-oil emulsified cosmetic, component (F) is preferably subjected to a hydrophobic treatment.

[0153] <19> As mentioned above <17> or <18> The water-in-oil emulsified cosmetic, wherein the content of component (F) in the total composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.5% by mass or more, and is preferably 40% by mass or less, more preferably 35% by mass or less, further preferably 30% by mass or less.

[0154] <20> As mentioned above <1> to <19> The water-in-oil emulsified cosmetic described above preferably further contains (G) a coloring pigment.

[0155] <21> As mentioned above <20> In the water-in-oil emulsified cosmetic, component (G) is preferably subjected to a hydrophobic treatment.

[0156] <22> As mentioned above <20> or <21> The water-in-oil emulsified cosmetic, wherein the content of ingredient (G) in the total composition is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, further preferably 0.05% by mass or more, further more preferably 0.1% by mass or more, particularly preferably 2% by mass or more, and is preferably 35% by mass or less, more preferably 30% by mass or less, further preferably 25% by mass or less, further more preferably 21% by mass or less, particularly preferably 5% by mass or less.

[0157] <23> As mentioned above <1> to <22> The water-in-oil emulsified cosmetic composition according to any one of the preceding claims, comprising (F) a fine-particle metal oxide and (G) a coloring pigment.

[0158] <24> As mentioned above <23> In the water-in-oil emulsified cosmetic, component (F) and component (G) are subjected to hydrophobic treatment.

[0159] <25> As mentioned above <1> to <24> The water-in-oil emulsified cosmetic described above preferably further contains an oily gelling agent.

[0160] <26> As mentioned above <25> The water-in-oil emulsified cosmetic, wherein the oily gelling agent is preferably an organically modified clay mineral, a cross-linked organopolysiloxane, a dextrin fatty acid ester, a metal soap, a sucrose fatty acid ester, and an oily component (wax) that is solid at 25°C, more preferably contains one or more selected from organically modified clay minerals, cross-linked organopolysiloxanes, dextrin fatty acid esters, and oily components that are solid at 25°C, further preferably contains one or more selected from organically modified clay minerals, cross-linked organopolysiloxanes, and oily components that are solid at 25°C, further more preferably contains one or more selected from organically modified clay minerals and cross-linked organopolysiloxanes, and in addition, it is preferred to use an organically modified clay mineral and a cross-linked organopolysiloxane in combination.

[0161] <27> As above <25 or <26> In the water-in-oil emulsified cosmetic, the content of the oily gelling agent in the total composition is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, further preferably 0.5% by mass or more, and is preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less, further more preferably 1.7% by mass or less.

[0162] <28> As mentioned above <1> to <27> The water-in-oil emulsified cosmetic according to any one of the preceding claims, wherein the content of water in the total composition is preferably 0.1 to 50% by mass, more preferably 1 to 30% by mass, and even more preferably 5 to 20% by mass.

[0163] <29> A water-in-oil emulsified cosmetic comprising the following ingredients (A), (B), (C), (D) and (E):

[0164] (A) one or more silicone oils selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane (excluding component (C));

[0165] (B) solid organic ultraviolet absorbers;

[0166] (C) 0.2 to 20% by mass of silicone oil to which an alkyl group having 8 to 28 carbon atoms is added;

[0167] (D) 1 to 20% by mass of ester oil;

[0168] (E) polyether-modified silicone surfactant less than 5% by mass,

[0169] and contains 0.05 to 3% by mass of an oily gelling agent.

[0170] The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

[0171] <30> A water-in-oil emulsified cosmetic comprising the following ingredients (A), (B), (C), (D) and (E):

[0172] (A) one or more silicone oils selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane (excluding component (C));

[0173] (B) solid organic ultraviolet absorbers;

[0174] (C) 0.2 to 20% by mass of silicone oil to which an alkyl group having 8 to 28 carbon atoms is added;

[0175] (D) 1 to 20% by mass of ester oil;

[0176] (E) polyether-modified silicone surfactant less than 5% by mass,

[0177] and contains 0.05 to 2% by mass of an oily gelling agent.

[0178] The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

[0179] <31> A water-in-oil emulsified cosmetic comprising the following ingredients (A), (B), (C), (D) and (E):

[0180] (A) 15 to 50% by mass of one or more silicone oils selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane (excluding component (C));

[0181] (B) solid organic ultraviolet absorbers;

[0182] (C) 0.2 to 20% by mass of silicone oil to which an alkyl group having 8 to 28 carbon atoms is added;

[0183] (D) 1 to 20% by mass of ester oil;

[0184] (E) polyether-modified silicone surfactant less than 5% by mass,

[0185] and contains 0.05 to 2% by mass of an oily gelling agent.

[0186] The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

[0187] <32> A water-in-oil emulsified cosmetic comprising the following ingredients (A), (B), (C), (D) and (E):

[0188] (A) 15 to 50% by mass of one or more silicone oils selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane (excluding component (C));

[0189] (B) solid organic ultraviolet absorbers;

[0190] (C) 0.2 to 20% by mass of silicone oil to which an alkyl group having 8 to 28 carbon atoms is added;

[0191] (D) 1 to 20% by mass of ester oil;

[0192] (E) 0.1% by mass or more and less than 5% by mass of a polyether-modified silicone surfactant,

[0193] and contains 0.05 to 2% by mass of an oily gelling agent.

[0194] The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

[0195] <33> A water-in-oil emulsified cosmetic comprising the following ingredients (A), (B), (C), (D) and (E):

[0196] (A) 15 to 50% by mass of one or more silicone oils selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane (excluding component (C));

[0197] (B) one or more solid organic ultraviolet absorbers selected from diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone;

[0198] (C) 0.2 to 20% by mass of silicone oil to which an alkyl group having 8 to 28 carbon atoms is added;

[0199] (D) 1 to 20% by mass of ester oil;

[0200] (E) 0.1% by mass or more and less than 5% by mass of a polyether-modified silicone surfactant,

[0201] The invention also contains 0.05 to 2% by weight of one or more oily gelling agents selected from organic modified clay minerals, crosslinked organopolysiloxanes, dextrin fatty acid esters, and oily components that are solid at 25°C.

[0202] The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

[0203] Example

[0204] Examples 1 to 18 and Comparative Examples 1 to 3

[0205] Water-in-oil emulsified cosmetics of the compositions shown in Tables 1 to 3 were prepared according to a conventional method, and the SPF values ​​were measured and the makeup durability, uniformity of makeup, stickiness, and smooth skin makeup were evaluated. The results are shown in Table 1.

[0206] (Evaluation method)

[0207] (1) SPF value:

[0208] On the PMMA plate, the 2 Each cosmetic was evenly applied for 1 minute in a cool and dark place and dried for 15 minutes. After the sample was dried, the transmittance (%) of the absorption spectrum (wavelength 350nm) at a total of 9 points on the square PMMA plate, including the midpoint, each vertex, and the midpoint of the side connecting each vertex was measured using an SPF analyzer (UV2000S, manufactured by Labsphere, USA), and the average of the 9 points was obtained. The SPF value (-) was obtained from the transmittance (%).

[0209] (2) Makeup durability:

[0210] After washing and conditioning the skin, three professional evaluators applied each cosmetic product to the entire face and visually evaluated the durability of each makeup. The scale was divided into five levels, with 5 being the case where the makeup did not change after 6 hours, and 1 being the case where the makeup changed within 2 hours. The results are the total value of the scores of the three professional evaluators.

[0211] (3) Uniformity of makeup:

[0212] After washing and conditioning the face, three professional evaluators applied each cosmetic product to the entire face and visually evaluated the uniformity of each makeup. The criteria were divided into five levels, with 5 being the case where there was no uneven application on local parts of the face, and 1 being the case where the pores were easily stuck or the application was uneven and the coating film was uneven. The results are the total value of the scores of the three professional evaluators.

[0213] (4) Whether it is sticky or not:

[0214] After washing and conditioning the skin, three professional panelists applied each cosmetic product to the entire face and conducted a sensory evaluation of the stickiness of the finished coating. The criteria were divided into five levels, with a rating of 5 for no stickiness on the finished skin and a rating of 1 for unpleasant stickiness such as oiliness on the finished skin. The results are the total of the ratings of the three professional panelists.

[0215] (5) Makeup for smooth skin:

[0216] After washing and conditioning the skin, three professional panelists applied each cosmetic product to the entire face and performed a sensory evaluation of the finished impression. The criteria were divided into five levels, with a smooth feeling of 5 and no feeling of 1. The results are the total of the scores of the three professional panelists.

[0217] Furthermore, polished skin means that, by applying water-in-oil emulsified cosmetics, the skin is not flat but looks three-dimensional, plump and smooth, and the pores and fine skin irregularities are not noticeable compared to the skin without the application.

[0218]

[0219]

[0220] [Table 2]

[0221]

[0222] [Table 3]

[0223]

[0224] In addition, the trade names of the components used in Examples are as follows.

[0225] *1: Uvinul A PLUS GRANULAR (manufactured by BASF)

[0226] *2: TINOSORB S (manufactured by BASF)

[0227] *3: BENTONE GEL PTM (manufactured by Elementis Japan Corporation): 15% by mass purity, 85% by mass phenyl trimethicone

[0228] *4: KSG-210 (manufactured by Shin-Etsu Chemical Co., Ltd.): 24% purity by mass, 76% methyl trimethicone (methyl trimethicone in KSG-210 is included in the content of component (A))

[0229] *5: SYNCROWAX HR-C (manufactured by Croda Inc.)

[0230] *6: Rheopearl KL2 (manufactured by Chiba Flour Milling Co., Ltd.)

[0231] *7: SA / NAI-TR-10MIBRID COLOR POWDER (manufactured by Miyoshi Chemicals Co., Ltd.)

[0232] *8: SA / NAI-R-10MIBRID COLOR POWDER (manufactured by Miyoshi Chemicals Co., Ltd.)

[0233] *9: SA / NAI-Y-10 MIBRID COLOR POWDER (manufactured by Miyoshi Chemicals Co., Ltd.)

[0234] *10: SA / NAI-B-10 MIBRID COLOR POWDER (manufactured by Miyoshi Chemicals Co., Ltd.)

[0235] *11: Tospearl 145A (manufactured by Momentive)

[0236] *12: D5 in the SA-treated fine-particle titanium oxide D5 dispersion (primary particle size 10-90 nm) represents decamethylcyclopentasiloxane, and D5 is included in the content of component (A).

[0237] *13: Decamethylcyclopentasiloxane in the octylsilylated ultrafine zinc oxide dispersion (45% by mass decamethylcyclopentasiloxane slurry) is included in the content of component (A).

[0238] Recipe Example 1

[0239] A water-in-oil emulsified cosmetic with the composition shown in Table 4 was prepared according to a conventional method.

[0240] The obtained water-in-oil emulsified cosmetic has an SPF value of 50, has excellent makeup durability, and has a uniform, non-sticky makeup feel, giving a smooth skin feel.

[0241] [Table 4]

[0242]

Claims

1. A water-in-oil emulsified cosmetic, in, Contains the following ingredients (A), (B), (C) and (D): (A) silicone oil, excluding component (C), in an amount of 27 to 34% by mass; (B) solid organic ultraviolet absorbers; (C) octyl polymethylsiloxane, in an amount of 0.2 to 20% by mass; (D) ester oil, and contains 0.1 to 2% by weight of an oily gelling agent. The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

2. The water-in-oil emulsified cosmetic according to claim 1, in, The silicone oil of the component (A) is in a liquid state at 25°C.

3. The water-in-oil emulsified cosmetic according to claim 1 or 2, in, The silicone oil of the component (A) contains one or more selected from the group consisting of linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane.

4. The water-in-oil emulsified cosmetic according to any one of claims 1 to 3, in, Component (A) contains volatile silicone.

5. The water-in-oil emulsified cosmetic according to any one of claims 1 to 4, in, Component (B) contains one or more selected from diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone.

6. The water-in-oil emulsified cosmetic according to any one of claims 1 to 5, in, The content of the component (B) is 0.1 to 10% by mass.

7. The water-in-oil emulsified cosmetic according to any one of claims 1 to 6, in, The mass ratio (C) / (A) of the component (C) to the component (A) is 0.005 to 0.

5.

8. The water-in-oil emulsified cosmetic according to any one of claims 1 to 7, in, The mass ratio (D) / (C) of the component (D) to the component (C) is 0.5 to 50.

9. The water-in-oil emulsified cosmetic according to any one of claims 1 to 8, in, (E) The content of the polyether-modified silicone surfactant is less than 5% by mass.

10. The water-in-oil emulsified cosmetic according to any one of claims 1 to 9, in, It further contains (F) fine-particle metal oxide and (G) a coloring pigment.

11. The water-in-oil emulsified cosmetic according to claim 10, in, Components (F) and (G) are subjected to a hydrophobic treatment.

12. The water-in-oil emulsified cosmetic according to any one of claims 1 to 11, in, The content of the component (D) is 1 to 20% by mass.

13. The water-in-oil emulsified cosmetic according to any one of claims 1 to 12, in, The water content is 0.1 to 50% by mass.

14. A water-in-oil emulsified cosmetic, in, Contains the following ingredients (A), (B), (C), (D) and (E): (A) one or more silicone oils selected from linear dimethylpolysiloxane, branched siloxane, and cyclic dimethylsiloxane, excluding component (C), and the content thereof is 27 to 34% by mass; (B) solid organic ultraviolet absorbers; (C) octyl polymethylsiloxane, in an amount of 0.2 to 20% by mass; (D) ester oil, the content of which is 1 to 20% by mass; (E) polyether-modified silicone surfactant, the content of which is less than 5% by mass, and contains 0.1 to 2% by weight of an oily gelling agent. The mass ratio (B) / (C) of the component (B) to the component (C) is 0.02 to 15.

Images