JP7705802B2 - Solid water-in-oil emulsion cosmetics - Google Patents

Description

Related Applications

This invention is based on the priority claim of Japanese Patent Application No. 2019-183877 (filed October 4, 2019), the entire contents of which are incorporated herein by reference.

This disclosure relates to a solid water-in-oil emulsion cosmetic.

Solid water-in-oil emulsion cosmetics are known (see, for example, Patent Documents 1 and 2).

Patent Document 1 describes a compact emulsion foundation containing 15% by weight of decamethylcyclopentanesiloxane, 20% by weight of methylphenylpolysiloxane, and 1% by weight of microcrystalline wax.

Patent Document 2 describes a solid water-in-oil emulsion makeup base containing 29.4% by weight of dimethylpolysiloxane, 15% by weight of methylphenylpolysiloxane, 5% by weight of microcrystalline wax, 4.5% by weight of pigment, and 6% by weight of ion-exchanged water.

Japanese Patent Application Publication No. 2-88513 JP 2005-194248 A

The following analysis is provided in light of this disclosure.

If the water content is low, as in the case of the compact emulsion foundation described in Patent Document 1, the feel of the foundation both during and after application to the skin becomes poor. Furthermore, even if the foundation is applied to the skin, it is not possible to obtain a high unevenness correction effect on the skin.

In the solid water-in-oil emulsion makeup base described in Patent Document 2, if the dimethylpolysiloxane is volatile, the feel when applied to the skin and after application will be poor. Furthermore, a sufficient unevenness correction effect cannot be obtained. On the other hand, if the dimethylpolysiloxane is non-volatile, the feel when applied to the skin will be poor and, even in this case, a sufficient unevenness correction effect cannot be obtained. Furthermore, the solid water-in-oil emulsion makeup base described in Patent Document 2 contains a large amount of pigment, so the feel when applied to the skin and after application will be poor. Furthermore, even in this case, a sufficient unevenness correction effect cannot be obtained.

Therefore, there is a demand for a solid water-in-oil emulsion cosmetic that provides a good feel both during and after application to the skin and has a high unevenness correction effect.

According to a first aspect of the present disclosure, there is provided a solid water-in-oil emulsion cosmetic comprising an oily component including silicone oil and wax, 1% by mass to 17% by mass of a powder, and 30% by mass to 65% by mass of an aqueous phase. The silicone oil comprises a volatile acyclic silicone oil and a nonvolatile silicone oil. The volatile acyclic silicone oil is an acyclic silicone oil having a viscosity of 5 cSt or less. The nonvolatile silicone oil is a silicone oil having a viscosity of more than 5 cSt. The volatile acyclic silicone oil is 5% by mass to 40% by mass relative to the mass of the oily component. The pigment in the powder is 4% by mass or less relative to the mass of the solid water-in-oil emulsion cosmetic.

The solid water-in-oil emulsion cosmetic of the present disclosure has high applicability. The solid water-in-oil emulsion cosmetic of the present disclosure allows the user to feel a good sensation of application when applying to the skin. In addition, the user can feel a freshness on the skin after applying the solid water-in-oil emulsion cosmetic of the present disclosure.

The solid water-in-oil emulsion cosmetic composition disclosed herein has a high unevenness correction effect that makes skin irregularities such as wrinkles and pores less noticeable.

Preferred forms for each of the above aspects are described below.

According to a preferred embodiment of the first aspect, the aqueous phase contains water. The water content is 25% by mass to 55% by mass relative to the mass of the solid water-in-oil emulsion cosmetic. The non- volatile silicone oil is 0.8 parts by mass to 10 parts by mass relative to 1 part by mass of the volatile acyclic silicone oil.

According to a preferred embodiment of the first aspect, the volatile acyclic silicone oil is dimethicone having a viscosity of 0.65 cSt, dimethicone (octamethyltrisiloxane) having a viscosity of 1 cSt, dimethicone (decamethyltetrasiloxane) having a viscosity of 1.5 cSt, dimethicone (methylpolysiloxane) having a viscosity of 2 cSt, or methyltrimethicone.
According to a preferred embodiment of the first aspect, the non-volatile silicone oil is dimethicone having a viscosity of 6 sSt, or methylphenylpolysiloxane.

According to a preferred embodiment of the first aspect, the content of the oily component is 23% by mass to 55% by mass relative to the mass of the solid water-in-oil emulsion cosmetic.

According to a preferred embodiment of the first aspect above, the content of silicone oil is 15% by mass to 55% by mass relative to the mass of the solid water-in-oil emulsion cosmetic.

According to a preferred embodiment of the first aspect above, the wax content is 1% by mass to 10% by mass relative to the mass of the solid water-in-oil emulsion cosmetic.

According to a preferred embodiment of the first aspect above, the wax comprises linear hydrocarbons and branched hydrocarbons.

According to a preferred embodiment of the first aspect above, the solid water-in-oil emulsion cosmetic is a base cosmetic.

According to a preferred embodiment of the first aspect above, the solid water-in-oil emulsion cosmetic is a topcoat cosmetic.

According to a preferred embodiment of the first aspect above, the solid water-in-oil emulsion cosmetic is contained in a container capable of storing the cosmetic in a sealed state.

In the following description, POE is an abbreviation for polyoxyethylene, and POP is an abbreviation for polyoxypropylene, and the number in parentheses after POE or POP represents the average number of moles of POE groups or POP groups added in the compound.

In this disclosure, "actual amount" refers to the amount that can produce an effective effect by adding the compound.

We will now describe the solid water-in-oil emulsion cosmetic according to the first embodiment of the present disclosure.

In this disclosure, "solid" means something that can maintain a solid state at 25°C.

The solid water-in-oil emulsion cosmetic of the present disclosure contains (A) an oil component, (B) a powder, and (C) an aqueous phase.

[(A) Oily component]
The oil-based components include silicone oils and waxes.

Examples of silicone oils include silicone compounds such as dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, stearoxymethylpolysiloxane, polyether-modified organopolysiloxane, fluoroalkyl-polyoxyalkylene-co-modified organopolysiloxane, alkyl-modified organopolysiloxane, terminal-modified organopolysiloxane, fluorine-modified organopolysiloxane, amino-modified organopolysiloxane, silicone gel, acrylic silicone, trimethylsiloxysilicate, silicone RTV rubber, and cyclopentasiloxane.

The silicone oil includes volatile silicone oil and non-volatile silicone oil. By including both volatile silicone oil and non-volatile silicone oil, it is possible to improve the feeling of use and the unevenness correction effect.

The silicone oil is preferably a non-cyclic silicone oil, for example, a linear silicone oil. In this disclosure, a volatile oil refers to an oily component that is volatile at atmospheric pressure and 25°C. A non-volatile oil refers to an oily component that is not volatile at atmospheric pressure and 25°C. For example, a volatile silicone oil refers to a silicone oil with a viscosity of 5 cSt or less. A non-volatile silicone oil refers to a silicone oil with a viscosity of more than 5 cSt.

Examples of volatile acyclic silicone oils include low molecular weight linear silicones such as dimethicone with a viscosity of 0.65 cSt, dimethicone (octamethyltrisiloxane) with a viscosity of 1 cSt, dimethicone (decamethyltetrasiloxane) with a viscosity of 1.5 cSt, and dimethicone (methylpolysiloxane) with a viscosity of 2 cSt; low molecular weight branched silicones such as methyltrimethicone; and low molecular weight alkyl-modified silicones. Of these, dimethicone with a viscosity of 2 cSt is preferred as the volatile acyclic silicone oil. Examples of volatile cyclic silicone oils include decamethylcyclopentanesiloxane. Examples of nonvolatile acyclic silicone oils include dimethicone and methylphenylpolysiloxane with a viscosity of 6 sSt. Of these, dimethicone with a viscosity of 6 cSt is preferred as the nonvolatile acyclic silicone oil.

The volatile silicone oil preferably contains acyclic silicone oil (e.g., linear silicone oil) in an amount of 80% by mass or more, preferably 85% by mass or more, more preferably 90% by mass or more, even more preferably 95% by mass or more, and particularly preferably 100% by mass of actual mass, based on the mass of the volatile silicone oil. By having a higher amount of acyclic silicone oil than cyclic silicone oil, the feeling of use can be improved. In addition, the unevenness correction effect can be improved. Furthermore, the effect as a base cosmetic and the effect as a top cosmetic can be improved.

For 1 part by mass of volatile silicone oil, non-volatile silicone oil is preferably 0.8 parts by mass or more, more preferably 1 part by mass or more, even more preferably 1.5 parts by mass or more, and particularly preferably 2 parts by mass or more.If the amount of non-volatile silicone oil is too small relative to the amount of volatile silicone oil, the feeling of use is reduced and the unevenness correction effect is also reduced.For 1 part by mass of volatile silicone oil, non-volatile silicone oil is preferably 10 parts by mass or less, more preferably 9 parts by mass or less, even more preferably 7 parts by mass or less, and particularly preferably 5 parts by mass or less.If the amount of volatile silicone oil is too large relative to the amount of non-volatile silicone oil, the feeling of use is reduced and the unevenness correction effect is also reduced.

The proportion of volatile silicone oil in the oil component is preferably 5% by mass or more, more preferably 10% by mass or more, based on the mass of the oil component. The proportion of volatile silicone oil can be 12% by mass or more, or 15% by mass or more, based on the mass of the oil component. If the proportion of volatile silicone oil in the oil component is less than 5% by mass, the feeling of use and the unevenness correction effect tend to decrease. The proportion of volatile silicone oil in the oil component is preferably 40% by mass or less, more preferably 35% by mass or less, even more preferably 30% by mass or less, and particularly preferably 25% by mass or less, based on the mass of the oil component. If the proportion of volatile silicone oil in the oil component exceeds 40% by mass, the feeling of use decreases and the unevenness correction effect also decreases.

The silicone oil is preferably 15% by mass or more, more preferably 20% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. If the silicone oil is less than 15% by mass, the stability of the cosmetic may be reduced. The silicone oil is preferably 55% by mass or less, more preferably 54% by mass or less, even more preferably 52% by mass or less, particularly preferably 50% by mass or less, and most preferably 45% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. The silicone oil can also be 40% by mass or less, 35% by mass or less, or 30% by mass or less. If the silicone oil exceeds 55% by mass, the amount of the aqueous phase becomes relatively small, making it easier for problems to occur as described below.

The wax may be any wax that is generally usable in cosmetics. Examples of wax include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ivory wax, whale wax, montan wax, rice bran wax, lanolin, kapok wax, lanolin acetate, sugarcane wax, isopropyl lanolinate, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, polyethylene glycol lanolinate, POE hydrogenated lanolin alcohol ether, ozokerite, paraffin, ceresin, petrolatum, and microcrystalline wax.

The wax preferably contains both linear wax (e.g., linear hydrocarbon) and branched wax (e.g., branched hydrocarbon), and more preferably consists of linear hydrocarbon and branched hydrocarbon. By adding a branched wax, the unevenness correction effect can be improved. By adding a linear wax, the feeling during and after application can be improved. An example of a linear wax is paraffin wax. An example of a branched wax is microcrystalline wax.

The wax may be present in an amount of 1% by mass or more, 2% by mass or more, or 3% by mass or more relative to the mass of the solid water-in-oil emulsion cosmetic. The wax may be present in an amount of 10% by mass or less, 8% by mass or less, or 7% by mass or less relative to the mass of the solid water-in-oil emulsion cosmetic.

When the wax contains both linear and branched waxes, it is preferable that the linear wax is more than the branched wax. The linear wax content can be 3% by mass or more, 3.5% by mass or more, or 4% by mass or more relative to the solid water-in-oil emulsion cosmetic. The linear wax content can be 6% by mass or less, 5.5% by mass or less, or 5% by mass or less relative to the solid water-in-oil emulsion cosmetic. The branched wax content can be 0.1% by mass or more, 0.2% by mass or more, or 0.25% by mass or more relative to the solid water-in-oil emulsion cosmetic. The branched wax content can be 0.6% by mass or less, 0.5% by mass or less, or 0.4% by mass or less relative to the solid water-in-oil emulsion cosmetic.

Oily components can include, for example, liquid oils and fats, solid oils and fats, waxes, hydrocarbons, higher fatty acids, higher alcohols, synthetic ester oils, oil-soluble ultraviolet absorbers, etc.

Examples of liquid oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, triglycerin, etc.

Examples of solid fats and oils include cocoa butter, coconut oil, horse tallow, hardened coconut oil, palm oil, beef tallow, mutton tallow, hardened beef tallow, palm kernel oil, lard, beef bone fat, Japan wax kernel oil, hardened oil, beef foot fat, Japan wax, and hardened castor oil.

Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ivory wax, whale wax, montan wax, bran wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugarcane wax, isopropyl lanolin fatty acid, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, etc.

Examples of hydrocarbon oils include liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, microcrystalline wax, isododecane, isohexadecane, etc.

Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tallic acid, isostearic acid, linoleic acid, linoleic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).

Examples of higher alcohols that can be used include straight-chain alcohols (e.g., lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, etc.); branched-chain alcohols (e.g., monostearyl glycerin ether (batyl alcohol), 2-decyltetradecyl alcohol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.); and the like.

Synthetic ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate. glyceryl tri-2-ethylhexanoate, glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, tri-2-heptylundecanoate glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptyl palmitate lauroyl undecyl, diisobutyl adipate, N-lauroyl-L-glutamic acid 2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

Examples of oil-soluble UV absorbers include benzoic acid-based UV absorbers (e.g., para-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N,N-dimethyl PABA butyl ester, N,N-dimethyl PABA ethyl ester, diethylaminohydroxybenzoylhexyl benzoate, etc.); anthranilic acid-based UV absorbers absorbents (e.g., homomenthyl-N-acetylanthranilate, etc.); salicylic acid-based ultraviolet absorbents (e.g., ethylhexyl salicylate, amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate, homosalate, etc.); cinnamic acid-based ultraviolet absorbents (e.g., octyl methoxycinnamate, ethyl-4-isopropyl cinnamate, methyl-2,5 -Diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, propyl p-methoxycinnamate, isopropyl p-methoxycinnamate, isoamyl p-methoxycinnamate, octyl p-methoxycinnamate (2-ethylhexyl p-methoxycinnamate, ethylhexyl methoxycinnamate), 2-ethoxyethyl p-methoxycinnamate, cyclohexyl p-methoxycinnamate methyl-α-cyano-β-phenylcinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-di-paramethoxycinnamate, etc.); 3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor; 2-phenyl-5-methylbenzoxazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2-(2'-hydroxy-5'-t-octylphenyl) Benzotriazole; 2-(2'-hydroxy-5'-methylphenylbenzotriazole; dibenzalazine; dianisoylmethane; 4-methoxy-4'-t-butyldibenzoylmethane; 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one, dimorpholinopyridazinone; 2-ethylhexyl-2-cyano-3,3-diphenylacrylate (octocrellin); 2,4-bis-{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-(1,3,5)-triazine, benzophenone-based ultraviolet absorbers (e.g., 2,4-dihydroxybenzo phenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.

The content of component (A) is preferably 23% by mass or more, more preferably 25% by mass or more, and even more preferably 30% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. The content of component (A) can be 35% by mass or more, or 40% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. If the content of component (A) is less than 23% by mass, the aqueous phase becomes relatively large, and the stability may be reduced. The content of component (A) is preferably 55% by mass or less, more preferably 50% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. The content of component (A) can be 45% by mass or less, or 40% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. If the content of component (A) exceeds 55% by mass, the aqueous phase becomes relatively small, and the feeling of use during and after application is reduced. In addition, the unevenness correction effect is also reduced.

[(B) Powder]
The powder may include at least one of a pigment (coloring powder) and a light scattering powder (soft focus powder). The pigment preferably has an average particle size of 50 nm or more, more preferably 100 nm or more, and even more preferably 200 nm or more. The pigment preferably has an average particle size of 300 nm or less. The average particle size can be measured in accordance with JIS Z8825 and 8827-1. In the present disclosure, the pigment does not include the light scattering powder (soft focus powder) described below.

Examples of pigments include inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.); inorganic red pigments (e.g., iron oxide (red oxide), iron titanate, etc.); inorganic brown pigments (γ-iron oxide, etc.), inorganic yellow pigments (yellow iron oxide, yellow ocher, etc.), inorganic black pigments (black iron oxide, carbon black, low-order titanium oxide, etc.), inorganic purple pigments (e.g., manganese violet, cobalt violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine, Prussian blue, etc.); pearl pigments (e.g., titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored titanium oxide coated mica, bismuth oxychloride, metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium or aluminum lake (e.g., organic pigments such as Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, and Blue No. 404, Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3, and Blue No. 1, etc.); natural pigments (e.g., chlorophyll, β-carotene, etc.), and the like can be used.

The pigment is preferably less than 1 part by weight per 1 part by weight of the light-scattering powder described below. The pigment can be 0.8 parts by weight or less, 0.5 parts by weight or less, or 0.2 parts by weight or less per 1 part by weight of the light-scattering powder. If the pigment exceeds 1 part by weight, the sense of transparency of the cosmetic product when applied to the skin decreases.

Although it is possible that the pigment is not contained in actual amount, it is preferable that the pigment content is 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.4% by mass or more, particularly preferably 0.5% by mass or more, and most preferably 0.7% by mass or more, based on the mass of the solid water-in - oil emulsion cosmetic. The pigment content can be 1% by mass or more, 1.5% by mass or more, or 2% by mass or more. If the pigment content is less than 0.1% by mass, it is difficult to obtain a coloring effect. The pigment content is preferably 4% by mass or less, more preferably 3.5% by mass or less, and even more preferably 3% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. The pigment content can be 2.5% by mass or less, 2% by mass or less, or 1.5% by mass or less. If the pigment content exceeds 4% by mass, the feeling of use is reduced and the unevenness correction effect is also reduced.

Light-scattering powder (soft focus powder) refers to a powder that has the effect of scattering and reflecting light on the skin, making unevenness in the skin (e.g., wrinkles, pores, etc.) less noticeable and making bare skin look beautiful. Light-scattering powder has a spherical or plate-like shape. Light-scattering powder has a refractive index of 1.4 to 1.8. The refractive index can be measured in accordance with JIS K0062. It is preferable that the light-scattering powder has an average particle size of 1 μm to 100 μm. The average particle size can be measured in accordance with JIS Z8825, 8827-1.

The light scattering powder may be at least one selected from the group consisting of silicone polymers, non-silicone polymers such as polyamides, and inorganic powders. Examples of silicone polymers include polymethylsilsesquioxane, (dimethicone/vinyl dimethicone) crosspolymer, (vinyl dimethicone/methicone silsesquioxane) crosspolymer, etc. Examples of non-silicone polymers include nylon-12, (HDI/trimethylol hexyllactone) crosspolymer, etc. Examples of inorganic powders include silica, aluminum oxide, etc.

Although it is possible that the light scattering powder does not contain an actual amount, it is preferable that the light scattering powder is 1% by mass or more, more preferably 2% by mass or more, and even more preferably 3% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. The light scattering powder can be 4% by mass or more, 6% by mass or more, 8% by mass or more, 10% by mass or more, 12% by mass or more, 14% by mass or more, or 16% by mass or more. If the light scattering powder is less than 1% by mass, the unevenness correction effect tends to be low. The light scattering powder is preferably 17% by mass or less (16.9% by mass or less when a pigment is present), more preferably 16% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. The light scattering powder can be 14% by mass or less, 12% by mass or less, 10% by mass or less, 8% by mass or less, or 6% by mass or less. If the light scattering powder exceeds 17% by mass, the feeling of use after application tends to decrease. In addition, the transparency of the skin also tends to decrease.

The powder may further include those that can be used for cosmetic purposes. Examples of powders include inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, red mica, biotite, lithia mica, calcined mica, calcined talc, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salts, magnesium, silica, zeolite, glass, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, metal soap (e.g., myris Examples of the powders that can be used include: inorganic powders (e.g., zinc tungstate, calcium palmitate, aluminum stearate, boron nitride, etc.); organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene and acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, silicone resin powder, silk powder, wool powder, urethane powder, etc.); wax powders (e.g., carnauba wax powder, etc.); starch powders (e.g., corn starch powder, rice starch powder, etc.), etc.

The content of component (B) is preferably 1% by mass or more, more preferably 3% by mass or more, and even more preferably 5% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. The content of component (B) can be 7% by mass or more, 9% by mass or more, 11% by mass or more, 13% by mass or more, or 15% by mass or more. If the content of component (B) is less than 1% by mass, a sufficient unevenness correction effect cannot be obtained. The content of component (B) is more preferably 17% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. The content of component (B) can be 16% by mass or less, 14% by mass or less, 12% by mass or less, 10% by mass or less, or 8% by mass or less. If the content of component (B) exceeds 17 % by mass, the feeling of use after application is reduced. In addition, the transparency of the skin is also reduced.

[(C) Water phase]
The aqueous phase can contain water. As the water, water used in cosmetics, quasi-drugs, etc. can be used, such as purified water, ion-exchanged water, tap water, etc.

The amount of water is preferably 20% by mass or more, more preferably 25% by mass or more, and even more preferably 30% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. The amount of water can be 35% by mass or more, or 40% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. The amount of water is preferably 55% by mass or less, more preferably 52% by mass or less, and even more preferably 50% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. The amount of water can be 45% by mass or less, or 40% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic.

The aqueous phase may further contain a water-soluble alcohol. Examples of the water-soluble alcohol include at least one selected from lower alcohols, polyhydric alcohols, polyhydric alcohol polymers, dihydric alcohol alkyl ethers, dihydric alcohol alkyl ethers, dihydric alcohol ether esters, glycerin monoalkyl ethers, sugar alcohols, monosaccharides, oligosaccharides, polysaccharides, and derivatives thereof.

Examples of lower alcohols include ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol, etc.

Examples of polyhydric alcohols include dihydric alcohols (e.g., ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.); trihydric alcohols (e.g., glycerin, trimethylolpropane, etc.); tetrahydric alcohols (e.g., pentaerythritol such as 1,2,6-hexanetriol, etc.); pentahydric alcohols (e.g., xylitol, etc.); hexahydric alcohols (e.g., sorbitol, mannitol, etc.); polyhydric alcohol polymers (e.g., diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin, serine, etc.); dihydric alcohol alkyl ethers (e.g., ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono 2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, etc.); dihydric alcohol alkyl ethers (e.g., diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol butyl ether, diethylene glycol dihydric alcohol ether esters (e.g., ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diadipate, ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate, etc.); glycerin monoalkyl ethers (for example, chimyl alcohol, selachyl alcohol, batyl alcohol, etc.); sugar alcohols (for example, sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, starch decomposition sugar, maltose, xylitol, starch decomposition sugar reduced alcohols, etc.); glycolide; tetrahydrofurfuryl alcohol; POE-tetrahydrofurfuryl alcohol; POP-butyl ether; POP.POE-butyl ether; tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphate; POP.POE-pentaneerythritol ether, polyglycerin, etc.

Examples of monosaccharides include trioses (e.g., D-glyceryl aldehyde, dihydroxyacetone, etc.), tetraoses (e.g., D-erythrose, D-erythrulose, D-threose, erythritol, etc.), pentoses (e.g., L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc.), hexoses (e.g., D-glucose, D-talose, D-psicose, D-galactose, D-fructose, L-galactose, L-mannose, D- tagatose, etc.), heptose (for example, aldoheptose, heptulose, etc.), octose (for example, octulose, etc.), deoxy sugar (for example, 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L-mannose, etc.), amino sugar (for example, D-glucosamine, D-galactosamine, sialic acid, aminouronic acid, muramic acid, etc.), uronic acid (for example, D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D-galacturonic acid, L-iduronic acid, etc.), etc.

Examples of oligosaccharides include at least one selected from sucrose, gunthianose, umbelliferose, lactose, planteose, isolichinoses, α,α-trehalose, raffinose, lychinoses, umbilicin, stachyose, verbascoses, etc.

Examples of polysaccharides include at least one selected from cellulose, quince seed, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, gum arabic, heparan sulfate, hyaluronic acid, tragacanth gum, keratan sulfate, chondroitin, xanthan gum, mucoitin sulfate, guar gum, dextran, keratosulfate, locust bean gum, succinoglucan, and caronic acid.

Other polyols include, for example, at least one selected from polyoxyethylene methyl glucoside (Glucam E-10), polyoxypropylene methyl glucoside (Glucam P-10), etc.

The content of component (C) is preferably 30% by mass or more, more preferably 33% by mass or more, and even more preferably 35% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. The content of component (C) can be 38% by mass or more, 40% by mass or more, or 42% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. If the content of component (C) is less than 30% by mass, the feeling of use during and after application is reduced, and the unevenness correction effect is also reduced. The content of component (C) is preferably 65% by mass or less, more preferably 63% by mass or less, and even more preferably 60% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. The content of component (C) can be 55% by mass or less, 50% by mass or less, or 45% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic. If the aqueous phase exceeds 65% by mass, the stability of the solid water-in-oil emulsion cosmetic is reduced.

[(D) Surfactant]
The solid water-in-oil emulsion cosmetic of the present disclosure may further contain a surfactant. The surfactant may be, for example, a silicone surfactant. The silicone surfactant may be, for example, a polyether-modified silicone surfactant. Examples of polyether-modified silicone surfactants include PEG-10 dimethicone, cetyl PEG/PPG-10/1 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, (PEG-15/lauryl polydimethylsiloxyethyl dimethicone) crosspolymer, and the like.

Examples of anionic surfactants include fatty acid soaps (e.g., sodium laurate, sodium palmitate, etc.); higher alkyl sulfates (e.g., sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfates (e.g., POE-lauryl triethanolamine sulfate, sodium POE-lauryl sulfate, etc.); N-acylsarcosinates (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., sodium N-stearoyl-N-methyl taurine, sodium N-myristoyl-N-methyl taurine, sodium coconut oil fatty acid methyl taurine, sodium lauryl methyl tauride, etc.); phosphates (sodium POE-oleyl ether phosphate, sodium POE-stearyl ether phosphate, etc.); sulfosuccinates (e.g., sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sulfosuccinate, sodium lauryl polypropylene sulfonate, sodium lauryl polyoxyethylene ... glycol sulfosuccinate, etc.); alkylbenzene sulfonates (e.g., sodium linear dodecylbenzene sulfonate, triethanolamine linear dodecylbenzene sulfonate, linear dodecylbenzene sulfonic acid, etc.); higher fatty acid ester sulfates (e.g., sodium hydrogenated coconut oil fatty acid glycerin sulfate, etc.); N-acyl glutamates (e.g., monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, monosodium N-myristoyl-L-glutamate, etc.); sulfated oils (e.g., turmeric oil, etc.); POE-alkyl ether carboxylic acids; POE-alkyl allyl ether carboxylates; α-olefin sulfonates; higher fatty acid ester sulfonates; secondary alcohol sulfates; higher fatty acid alkylolamide sulfates; sodium lauroyl monoethanolamide succinate; ditriethanolamine N-palmitoyl aspartate; sodium caseinate, etc.

Examples of cationic surfactants include alkyltrimethylammonium salts (e.g., stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (e.g., cetylpyridinium chloride, etc.); dialkyldimethylammonium salts (e.g., distearyldimethylammonium chloride); poly(N,N'-dimethyl-3,5-methylenepiperidinium) chloride; alkyl quaternary ammonium salts; alkyldimethylbenzylammonium salts; alkylisoquinolinium salts; dialkylmorphonium salts; POE-alkylamines; alkylamine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; benzethonium chloride, etc.

Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.); betaine-based surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryl dimethylaminoacetic acid betaine, alkyl betaine, amido betaine, sulfobetaine, etc.).

Examples of hydrophilic nonionic surfactants include POE-sorbitan fatty acid esters (e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE-sorbitol fatty acid esters (e.g., POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, etc.); POE-glycerin fatty acid esters (e.g., POE-glycerin monostearate, POE-monooleates such as POE-glycerol monoisostearate, POE-glycerol triisostearate, etc.); POE-fatty acid esters (for example, POE-distearate, POE-monodioleate, ethylene glycol distearate, etc.); POE-alkyl ethers (for example, POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); Pluronic types (for example, Pluronic etc.); POE·POP-alkyl ethers (e.g., POE·POP-cetyl ether, POE·POP-2-decyltetradecyl ether, POE·POP-monobutyl ether, POE·POP-hydrogenated lanolin, POE·POP-glycerin ether, etc.); tetraPOE·tetraPOP-ethylenediamine condensates (e.g., Tetronic, etc.); POE-castor oil hydrogenated castor oil derivatives (e.g., POE-castor oil, POE-hydrogenated castor oil, POE-hydrogenated castor oil monoisostearate, POE-hydrogenated castor oil triisostearate, POE -hydrogenated castor oil monopyroglutamic acid monoisostearate diester, POE-hydrogenated castor oil maleic acid, etc.); POE-beeswax/lanolin derivatives (for example, POE-sorbitol beeswax, etc.); alkanolamides (for example, coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid esters; POE-alkylamines; POE-fatty acid amides; sucrose fatty acid esters; alkylethoxydimethylamine oxide; trioleyl phosphate, etc.

Examples of lipophilic nonionic surfactants include sorbitan fatty acid esters (e.g., sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexyl acid, diglycerol sorbitan tetra-2-ethylhexyl acid, etc.); glycerin polyglycerin fatty acids (e.g., glycerin monocottonseed oil fatty acid, glycerin monoerucate, glycerin sesquioleate, glycerin monostearate, α,α'-glycerin oleate pyroglutamate, glycerin monostearate malate, etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); hydrogenated castor oil derivatives; glycerin alkyl ethers, etc.

The amount of the surfactant can be, for example, 0.5% by mass or more, or 1% by mass or more, based on the mass of the solid water-in-oil emulsion cosmetic. The amount of the surfactant can be, for example, 5% by mass or less, 3% by mass or less, or 2% by mass or less, based on the mass of the solid water-in-oil emulsion cosmetic.

[(E) Others]
The solid water-in-oil emulsion cosmetic of the present disclosure can contain other ingredients, such as water-soluble polymers, thickeners, moisturizers, film-forming agents, water-soluble UV absorbers, sequestering agents, amino acids, organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidant aids, fragrances, and the like, as necessary, to the extent that the effects of the present disclosure are not impaired.

Examples of natural water-soluble polymers include plant-based polymers (e.g., gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed, algae colloids (cassou extract), starch (rice, corn, potato, wheat), glycyrrhizic acid); microbial polymers (e.g., xanthan gum, dextran, succinoglucan, pullulan, etc.); and animal-based polymers (e.g., collagen, casein, albumin, gelatin, etc.).

Examples of semi-synthetic water-soluble polymers include starch-based polymers (e.g., carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose-based polymers (methyl cellulose, ethyl cellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc.); alginate-based polymers (e.g., sodium alginate, propylene glycol alginate, etc.).

Examples of thickening agents include gum arabic, carrageenan, karaya gum, tragacanth gum, carob gum, quince seed, casein, dextrin, gelatin, sodium pectinate, sodium alginate, methylcellulose, ethylcellulose, carboxymethylcellulose (CMC), hydroxyethylcellulose, hydroxypropylcellulose, polyvinyl alcohol (PVA), polyvinyl methyl ether (PVM), PVP (polyvinylpyrrolidone), sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, dialkyldimethylammonium cellulose sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, magnesium aluminum silicate (beegum), laponite, silicic anhydride, taurate-based synthetic polymers, and acrylate-based synthetic polymers.

Examples of moisturizing agents include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, alkylene oxide derivatives, short-chain soluble collagen, diglycerol (EO) PO adduct, Rosa rugosa extract, Achillea millefolium extract, and Melilot extract.

Examples of coating agents include anionic coating agents (e.g., (meth)acrylic acid/(meth)acrylic acid ester copolymers, methyl vinyl ether/maleic anhydride high polymers, etc.), cationic coating agents (e.g., cationic cellulose, dimethyl diallyl ammonium chloride polymers, dimethyl diallyl ammonium chloride/acrylamide copolymers, etc.), and nonionic coating agents (e.g., polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl acetate, polyacrylic acid ester copolymers, (meth)acrylamide, polymeric silicone, silicone resins, trimethylsiloxysilicate, etc.).

Examples of water-soluble UV absorbers include benzophenone-based UV absorbers (e.g., 2-hydroxy-4-methoxybenzophenone-5-sulfonate, etc.), benzylidene camphor-based UV absorbers (benzylidene camphorsulfonic acid, terephthalidene discamphorsulfonic acid, etc.), and phenylbenzimidazole-based UV absorbers (phenylbenzimidazole sulfonic acid, etc.).

Examples of sequestering agents include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, trisodium ethylenediaminehydroxyethyltriacetate, and the like.

Examples of amino acids include neutral amino acids (e.g., threonine, cysteine, etc.); basic amino acids (e.g., hydroxylysine, etc.); and the like. Examples of amino acid derivatives include sodium acyl sarcosine (sodium lauroyl sarcosine), acyl glutamate, sodium acyl β-alanine, glutathione, pyrrolidone carboxylic acid, etc.

Examples of organic amines include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol.

Examples of polymer emulsions include acrylic resin emulsion, polyethyl acrylate emulsion, acrylic resin liquid, polyacrylic alkyl ester emulsion, polyvinyl acetate resin emulsion, and natural rubber latex.

Examples of pH adjusters include buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate.

Examples of vitamins include vitamin A, B ₁ , B ₂ , B ₆ , C, E or derivatives thereof, pantothenic acid or derivatives thereof, biotin, and the like.

Examples of antioxidants include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, etc.

Examples of antioxidant aids include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, ethylenediaminetetraacetic acid, etc.

Other possible ingredients include, for example, preservatives (ethylparaben, butylparaben, chlorphenesin, phenoxyethanol, etc.); anti-inflammatory agents (for example, glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); skin whitening agents (for example, placenta extract, saxifrage extract, arbutin, etc.); various extracts (for example, Phellodendron bark, Coptis japonica, Lithospermum root, Peony root, Swertia japonica, Birch, Sage, Loquat, Carrot, Aloe, Mallow, Iris, Grape, Coix seed, Loofah, Lily, Saffron, Cnidium rhizome, Ginger, Hypericum perforatum, Ononis, Garlic, Capsicum annuum, Citrus aurantium, Tomentosum, float, seaweed, etc.), activators (for example, royal jelly, photosensitizers, cholesterol derivatives, etc.); blood circulation promoters (for example, vanillylamide nonylate, nicotinic acid benzyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, zingerone, cantharides tincture, ichthammol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthine, γ-oryzanol, etc.); antiseborrheic agents (for example, sulfur, thianthol, etc.); and anti-inflammatory agents (for example, tranexamic acid, thiotaurine, hypotaurine, etc.).

In addition, the compositions of the present disclosure may also contain caffeine, tannin, verapamil, tranexamic acid and its derivatives, various herbal extracts such as licorice, quince, and Japanese anemone, pharmaceutical agents such as tocopherol acetate, glycyrrhizic acid, glycyrrhizic acid and its derivatives or salts thereof, skin whitening agents such as vitamin C, magnesium ascorbyl phosphate, ascorbyl glucoside, arbutin, and kojic acid, and amino acids and their derivatives such as arginine and lysine, as appropriate.

The solid water-in-oil emulsion cosmetic of the present disclosure can maintain a stable solid state at room temperature (e.g., 25°C). The solid water-in-oil emulsion cosmetic of the present disclosure can be applied, for example, to foundation cosmetics (base makeup), topcoat cosmetics, highlighters (shine cosmetics), lipsticks, and the like. In particular, the solid water-in-oil emulsion cosmetic of the present disclosure can be suitably applied to skin other than the lips. In other words, the solid water-in-oil emulsion cosmetic of the present disclosure can also be used as a cosmetic to be applied to skin other than the lips.

The solid water-in-oil emulsion cosmetic of the present disclosure can be used, for example, by forming it into a stick (rod) shape. The solid water-in-oil emulsion cosmetic of the present disclosure is preferably stored in a container that can be sealed for storage in order to prevent the ingredients from volatilizing and drying.

[Manufacturing method]
A method for producing the solid water-in-oil emulsion cosmetic of the present disclosure will be described. The solid water-in-oil emulsion cosmetic of the present disclosure can be produced by a known method. For example, the oil component is heated and melted. Next, other components are added to the liquid oil component and mixed. Next, the mixture is cooled. In this manner, the solid water-in-oil emulsion cosmetic of the present disclosure can be produced.

In the solid water-in-oil emulsion cosmetic of the present disclosure, it may be difficult or impractical to directly identify the phase structure, etc., by the composition. In such cases, the solid water-in-oil emulsion cosmetic of the present disclosure should be allowed to be identified by its manufacturing method.

The solid water-in-oil emulsion cosmetic of the present disclosure can provide a good feeling of use during and after application. For example, the solid water-in-oil emulsion cosmetic of the present disclosure spreads well when applied and has excellent applicability. In addition, the solid water-in-oil emulsion cosmetic of the present disclosure can provide a comfortable feeling of use without any resistance felt between the cosmetic and the skin to which it is applied. Furthermore, the user can feel moisture and freshness on the skin to which the solid water-in-oil emulsion cosmetic of the present disclosure has been applied.

When the solid water-in-oil emulsion cosmetic of the present disclosure is applied to the skin (especially facial skin), it can make uneven skin such as wrinkles and pores less noticeable. In other words, the solid water-in-oil emulsion cosmetic of the present disclosure has the effect of correcting uneven skin.

As described above, the solid water-in-oil emulsion cosmetic of the present disclosure can be used as a base cosmetic (base makeup). Even when the solid water-in-oil emulsion cosmetic of the present disclosure is used as a base cosmetic and a makeup cosmetic (e.g., foundation) is applied on top of the solid water-in-oil emulsion cosmetic applied to the skin, wrinkling (disintegration) of the solid water-in-oil emulsion cosmetic of the present disclosure, which serves as a base, is suppressed. In other words, the solid water-in-oil emulsion cosmetic of the present disclosure is less likely to cause makeup to disintegrate when used as a base.

As described above, the solid water-in-oil emulsion cosmetic of the present disclosure can be used as a topcoat cosmetic. Even when the solid water-in-oil emulsion cosmetic of the present disclosure is applied on top of an applied makeup cosmetic (e.g., foundation), the cosmetic effect of the makeup cosmetic is prevented from being impaired. In other words, the solid water-in-oil emulsion cosmetic of the present disclosure has a transparent appearance as a topcoat.

The solid water-in-oil emulsion cosmetic of the present disclosure will be described below with reference to examples. However, the solid water-in-oil emulsion cosmetic of the present disclosure is not limited to the following examples. The content of each component shown in each table is expressed in mass%.

[ Examples and Comparative Examples ]
Solid water-in-oil emulsion cosmetics according to the Examples and Comparative Examples shown in Tables 1 to 5 were prepared. Each solid water-in-oil emulsion cosmetic was tested for the following evaluation items. The evaluation criteria for each evaluation item are shown below. Tables 1 to 5 show the composition and evaluation of each solid water-in-oil emulsion cosmetic.

[Easy spread of cosmetics when applied]
A panel of 10 people evaluated the application properties (ease of spreading) of the solid water-in-oil emulsion cosmetic compositions according to each Example and Comparative Example when the compositions were applied to the face.
A: Seven or more panelists judged the cosmetic preparation to have good spreadability;
B: Five to six panelists judged that the cosmetic spread well;
C: 2 to 4 panelists judged that the cosmetic spread well;
D: One or less panelists judged the cosmetic to have good spreadability.

[No squeaking when applied]
A panel of 10 people evaluated the smoothness of the solid water-in-oil emulsion cosmetics of each Example and Comparative Example when they were applied to the face. Squeakiness refers to the friction or discomfort felt between the cosmetic and the skin when applying the cosmetic.
A: Seven or more panelists judged that the cosmetic composition did not feel squeaky when applied;
B: Five to six panelists judged that the cosmetic preparation did not feel squeaky when applied;
C: 2 to 4 panelists judged that the cosmetic preparation did not feel squeaky when applied;
D: One or less panelists judged that the cosmetic composition did not feel squeaky when applied.

[Freshness after application]
A panel of 10 people evaluated whether the solid water-in-oil emulsion cosmetic composition according to each Example and Comparative Example felt moisturized on the skin after application to the face.
A: Seven or more panelists judged it to be fresh;
B: Five to six panelists judged it to be fresh;
C: 2 to 4 panelists judged it to be fresh;
D: One or less panelists judged it to be refreshing.

[Unevenness correction effect]
The solid water-in-oil emulsion cosmetic composition according to each Example and Comparative Example was applied directly to the face, and a panel of 10 people evaluated whether the cosmetic composition made the unevenness of the bare skin (wrinkles, pores) less noticeable.
A: Seven or more panelists judged that the cosmetic product made the unevenness of bare skin less noticeable;
B: Five to six panelists judged that the cosmetic product made the unevenness of bare skin less noticeable;
C: 2 to 4 panelists judged that the cosmetic product made the unevenness of bare skin less noticeable;
D: One or less panelists judged that the cosmetic product made unevenness of bare skin less noticeable.

[Wrinkle resistance]
A solid water-in-oil emulsion cosmetic according to each Example and Comparative Example was applied directly to the face, and then a water-in-oil foundation was applied over the cosmetic. A panel of 10 people evaluated whether the cosmetic as a base crumbled (came apart) when the cosmetic was applied directly to the face.
A: Seven or more panelists judged that the makeup did not come off;
B: Five to six panelists judged that the makeup did not come off;
C: 2 to 4 panelists judged that the makeup did not come off;
D: One or less panelists judged that the makeup did not come off.

[Transparency]
A water-in-oil type foundation was applied to the face, and then a solid water-in-oil type emulsion cosmetic composition according to each Example and Comparative Example was applied on top of the foundation, and a panel of 10 people evaluated the transparency of the cosmetic composition, i.e., whether the cosmetic composition impaired the cosmetic effect of the foundation.
A: Seven or more panelists judged it to be transparent;
B: Five to six panelists judged it to be transparent;
C: 2 to 4 panelists judged it to be transparent;
D: One or less panelists judged it to be transparent.

In Comparative Examples 1-2 and Examples 3-4 , the total amount of the oily component and the silicone oil was kept constant, and the ratio of the volatile silicone oil to the non-volatile silicone oil was changed. In Comparative Example 2 , in which the proportion of the volatile silicone oil was high (the proportion of the non-volatile silicone oil was low), few panels rated the usability as good overall. Also, few panels rated the unevenness correction effect. From this, it is considered that the proportion of the volatile silicone oil in the oily component is preferably 40% by mass or less, more preferably 35% by mass or less, even more preferably 30% by mass or less, and particularly preferably 25% by mass or less, relative to the mass of the oily component. Also, it is considered that the proportion of the volatile silicone oil in the oily component is preferably 5% by mass or more, and more preferably 10% by mass or more, relative to the mass of the oily component.

In terms of the ratio of volatile silicone oil to non-volatile silicone oil, it is considered that the non-volatile silicone oil is preferably 0.8 parts by mass or more, more preferably 1.5 parts by mass or more, and even more preferably 2 parts by mass or more, relative to 1 part by mass of volatile silicone oil.It is considered that the non-volatile silicone oil is preferably 10 parts by mass or less, more preferably 9 parts by mass or less, even more preferably 7 parts by mass or less, and particularly preferably 5 parts by mass or less, relative to 1 part by mass of volatile silicone oil.

In terms of the ratio of volatile silicone oil to non-volatile silicone oil, when comparing Comparative Example 1 , which used a cyclic volatile silicone oil, with Example 3, which used an acyclic (straight-chain) volatile silicone oil, the cosmetic of Example 3 received a higher evaluation. This suggests that acyclic silicone oil is more preferable than cyclic silicone oil as a volatile silicone oil.

In Comparative Example 5, Examples 6 to 7, and Comparative Example 8 , the water content was changed. The silicone oil content was changed corresponding to the water content. The ratio of volatile silicone oil to non-volatile silicone oil was the same as in Example 3 .

In Comparative Example 8, in which the water content was about 59% by mass and the aqueous phase content was 68.35% by mass , a stable solid water-in-oil emulsion cosmetic was not obtained. On the other hand, in Example 7, in which the water content was about 51% by mass and the aqueous phase content was 68.35% by mass, a stable solid water-in-oil emulsion cosmetic was obtained. It is believed that the reason for the decrease in stability of the cosmetic was that the aqueous phase was too much. For this reason, it is believed that the aqueous phase is preferably 65% by mass or less, and more preferably 63% by mass or less, relative to the mass of the cosmetic.

In Comparative Example 5, in which the water content is about 16% by mass and the aqueous phase content is 26.35% by mass , many panels did not evaluate the feeling of use felt on the skin when applied. In particular, few panels felt a sense of freshness. Also, few panels evaluated the unevenness correction effect and creasing resistance of the base cosmetic. These are considered to be influenced by the small amount of aqueous phase. From this, it is considered that the aqueous phase is preferably 30% by mass or more, more preferably 35% by mass or more, and even more preferably 40% by mass or more.

The cosmetics according to Comparative Examples 1 and 2, Examples 3 and 4, Comparative Example 5, Examples 6 and 7, and Comparative Example 8 contain, as wax, paraffin wax, which is a linear hydrocarbon, and microstearate wax, which is a branched hydrocarbon. In Examples 9 and 10 , based on the composition according to Example 3 , the total amount of wax was the same as in Comparative Examples 1 and 2, Examples 3 and 4, Comparative Example 5, Examples 6 and 7, and Comparative Example 8, and only one of the linear hydrocarbon and the branched hydrocarbon was added.

Good evaluations were obtained in both Example 9, in which no branched wax was added, and Example 10 , in which no linear wax was added.

In Example 9, in which no branched wax was added, the number of panels who recognized the unevenness correction effect was fewer than in Example 3. On the other hand, in Example 10, in which no linear wax was added, the number of panels who recognized the good spreadability during application and the freshness after application was fewer than in Example 3. From this, it is considered preferable that the solid water-in-oil emulsion cosmetic contains both linear wax and branched wax. It is considered that the linear wax is preferably 3% by mass or more, more preferably 3.5% by mass or more, and even more preferably 4% by mass or more. It is considered that the linear wax is preferably 6% by mass or less, more preferably 5.5% by mass or less, and even more preferably 5% by mass or less. It is considered that the branched wax is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and even more preferably 0.25% by mass or more. It is considered that the branched wax is preferably 0.6% by mass or less, more preferably 0.5% by mass or less, and even more preferably 0.4% by mass or less.

In Examples 11 to 13 and Comparative Example 14 , the amount of pigment was changed based on the composition of Example 3 .

Example 11 , in which the pigment content is 0.5% by mass, was evaluated as good. Compared with Example 12 , in which the pigment content is 2% by mass, Example 12 was evaluated as having a better unevenness correction effect. From this, it is considered that the pigment content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.4% by mass or more, and particularly preferably 0.7% by mass or more.

In Example 13 and Comparative Example 14 , in which the pigment content was 4% by mass and 6% by mass, as the pigment content increased, the number of people who evaluated the usability generally decreased, and the number of people who evaluated the unevenness correcting effect also decreased. From this, it is considered that the pigment content is preferably 4% by mass or less, and more preferably 3% by mass or less.

In Examples 15 to 17 , the type of light scattering powder was changed based on the composition of Example 3. Polymethylsilsesquioxane powder, nylon-12 powder, silica, and (dimethicone/vinyl dimethicone) crosspolymer powder can all function as a light scattering powder.

In all of Examples 15 to 17 , good evaluations were obtained in the same manner as in Example 3. From this, it is considered that each evaluation item does not depend on the type of light scattering powder.

In Examples 18 to 20 and Comparative Example 21 , the total amount of powder was changed by changing the amount of light scattering powder. In Example 18 , in which the total amount of powder was 3% by mass, the evaluation as a base cosmetic was lower than that of Example 3. From this, it is considered that the total amount of powder is preferably 1% by mass or more, more preferably 3% by mass or more, and even more preferably 5% by mass or more. In addition, it is considered that the amount of light scattering powder is preferably 1% by mass or more, more preferably 3% by mass or more, and even more preferably 5% by mass or more.

In Comparative Example 21 , in which the total amount of powder was 19% by mass, the evaluation of freshness after application was low, and the evaluation of transparency was also low. Therefore, it is considered that the total amount of powder is preferably 18% by mass or less, and more preferably 17% by mass or less. In addition, it is considered that the light scattering powder is preferably 17% by mass or less, and more preferably 16% by mass or less.

Formulation examples of the solid water-in-oil emulsion cosmetic of the present disclosure are given below. Application examples of the solid water-in-oil emulsion cosmetic of the present disclosure are not limited to the formulation examples below.

Formulation Example 1: Stick-type makeup base (Table 6)

The solid water-in-oil emulsion cosmetic of the present invention has been described based on the above-mentioned embodiments and examples, but is not limited to the above-mentioned embodiments and examples, and may include various modifications, changes, and improvements to each of the disclosed elements (including the elements described in the claims, specification, and drawings) within the scope of the present invention and based on the basic technical concept of the present invention. Furthermore, various combinations, substitutions, and selections of each of the disclosed elements are possible within the scope of the claims of the present invention.

Further objects, objectives and forms (including modifications) of the present invention will become apparent from the entire disclosure of the present invention, including the claims.

With respect to the numerical ranges set forth in this document, unless otherwise specified, any numerical value or range falling within that range should be construed as being specifically set forth in this document.

The solid water-in-oil emulsion cosmetic of the present disclosure can be used, for example, in cosmetics that are applied to the skin. For example, the solid water-in-oil emulsion cosmetic of the present disclosure can be used in base cosmetics, topcoat cosmetics, makeup cosmetics, antiperspirants, deodorants, sunscreen cosmetics, skin care agents, and the like.

Claims (12)

An oily component including a silicone oil and a wax;
1% to 17% by weight of powder;
and 30% to 65% by weight of an aqueous phase;
The silicone oil includes a volatile acyclic silicone oil and a non-volatile silicone oil,
The volatile acyclic silicone oil is an acyclic silicone oil having a viscosity of 5 cSt or less,
The non-volatile silicone oil is a silicone oil having a viscosity of more than 5 cSt;
The volatile acyclic silicone oil is 5% by mass to 40% by mass relative to the mass of the oily component,
A solid water-in-oil emulsion cosmetic, wherein the pigment in the powder is 4% by mass or less relative to the mass of the solid water-in-oil emulsion cosmetic. The aqueous phase comprises water,
2. The cosmetic according to claim 1, wherein the water content is 25% by mass to 55% by mass relative to the mass of the solid water-in-oil emulsion cosmetic. The cosmetic preparation according to claim 1 or 2, in which the nonvolatile silicone oil is 0.8 to 10 parts by mass per 1 part by mass of the volatile acyclic silicone oil. The cosmetic preparation according to any one of claims 1 to 3, wherein the volatile acyclic silicone oil is dimethicone having a viscosity of 0.65 cSt, dimethicone (octamethyltrisiloxane) having a viscosity of 1 cSt, dimethicone (decamethyltetrasiloxane) having a viscosity of 1.5 cSt, dimethicone (methylpolysiloxane) having a viscosity of 2 cSt , or methyltrimethicone. The cosmetic preparation according to any one of claims 1 to 4 , wherein the non-volatile silicone oil is dimethicone having a viscosity of 6 sSt or methylphenylpolysiloxane. The cosmetic according to any one of claims 1 to 5 , wherein the content of the oily component is 23% by mass to 55% by mass relative to the mass of the solid water-in-oil emulsion cosmetic. The cosmetic according to any one of claims 1 to 6 , wherein the content of the silicone oil is 15% by mass to 55% by mass relative to the mass of the solid water-in-oil emulsion cosmetic. The cosmetic according to any one of claims 1 to 7 , wherein the content of the wax is 1% by mass to 10% by mass relative to the mass of the solid water-in-oil emulsion cosmetic. The cosmetic preparation according to any one of claims 1 to 8 , wherein the wax comprises a straight-chain hydrocarbon and a branched hydrocarbon. The cosmetic material according to any one of claims 1 to 9 , which is a base cosmetic material. The cosmetic material according to any one of claims 1 to 9 , which is a topcoat cosmetic material. The cosmetic according to any one of claims 1 to 11 , which is contained in a container capable of storing the cosmetic in a sealed state.