Water-in-oil emulsion cosmetic composition

Abstract

A water-in-oil emulsion cosmetic composition, comprising: (a) a nonionic surfactant having an HLB value of less than 8 and comprising (a1) a polyglycerol fatty acid ester and (a2) a sorbitan fatty acid ester; (b) a copolymer of vinylpyrrolidone and an alpha-olefin; (c) a plant-derived resin; (d) a hydrophobized pigment; and (e) an oil comprising a volatile hydrocarbon oil.

Description

WATER-IN-OIL EMULSION COSMETIC COMPOSITION

[0001] The present invention relates to a water-in-oil emulsion cosmetic composition.

[0002] Cushion foundations that are used by impregnating a cushion (puff) with a liquid foundation (WO20217 / 016608, for example), are convenient in terms of portability and touching up of makeup, and have therefore received wide consumer support in recent years. Cosmetics are generally preferred to have high stability and high makeup effects, including high coverage and lasting power, and most liquid foundations marketed in the past have employed silicone-based resins to help extend their usable life.

[0003] When a silicone-based resin is added in a large amount to a cosmetic such as a liquid foundation, however, it tends to result in a sticky skin finish with a thicker makeup layer. In light of recent SDGs, consumers are tending to avoid cosmetics that contain components considered to be harmful to human health or the environment, such as nano materials and silicone compounds.

[0004] It is an object of the invention to provide a water-in-oil emulsion cosmetic composition having the following characteristics 1) to 5). 1) A high coverage effect 2) A lightweight, thin make-up film layer 3) A comfortable skin finish without sticky texture 4) A long-lasting effect 5) Robust stability

[0005] The present invention provides the following [1]. [1] A water-in-oil emulsion cosmetic composition, comprising: (a) a nonionic surfactant (i) having an HLB value of less than 8 and (ii) comprising (a1) a polyglycerol fatty acid ester and (a2) a sorbitan fatty acid ester, (b) a copolymer of vinylpyrrolidone and an alpha-olefin, (c) a plant-derived resin, (d) a hydrophobized pigment, and (e) an oil comprising a volatile hydrocarbon oil. Hereunder, (a) will be referred to as "component (a)", and likewise for the other components. Component (a) can be also described as (a) one or more nonionic surfactants comprising (a1) a polyglycerol fatty acid ester and (a2) a sorbitan fatty acid ester, wherein the weighted average of the HLB values of the nonionic surfactants is less than 8.

[0006] The water-in-oil emulsion cosmetic composition: 1) exhibits a high coverage effect, and produces 2) a lightweight, thin make-up film layer and 3) a comfortable skin finish without sticky texture. In addition, 4) the long-lasting effect is excellent and the composition itself has excellent 5) robust stability.

[0007] It is believed that these effects are not derived from each of the individual components (a) to (e) but rather are based on the combination of components (a) to (e). When the water-in-oil emulsion cosmetic composition does not contain component (a), it is difficult to obtain 2) a lightweight, thin make-up film layer and robust stability. As used herein, "robust stability" means "stability in an emulsified state". The polyglycerol fatty acid ester is important for the cosmetic composition to form an emulsified state. The sorbitan fatty acid ester is important for obtaining a comfortable skin finish and maintaining the emulsified stability of the cosmetic composition. The cosmetic composition can be formulated without a silicone-based surfactant, allowing a more comfortable skin finish to be obtained when it is applied onto skin.

[0008] When the cosmetic composition does not contain component (b) it is difficult to obtain 3) a comfortable skin finish without sticky texture and 4) a long-lasting effect, when it does not contain component (c) the 4) long-lasting effect tends to be insufficient, when it does not contain component (d) it is difficult to achieve 1) a high coverage effect, 2) a lightweight, thin make-up film layer and 5) robust stability, and when it does not contain component (e) it is difficult to obtain 2) a lightweight, thin make-up film layer, 3) a comfortable skin finish without sticky texture and 4) a long-lasting effect.

[0009] The present invention also provides the following [2] to

[0021] . [2] The cosmetic composition according to [1], wherein component (a1) comprises at least one selected from the group consisting of an ester of hydroxy fatty acid polycondensate and polyglycerol, and a mono- or poly-fatty acid ester of polyglycerol.

[0010] [3] The cosmetic composition according to [1] or [2], wherein component (a2) comprises a mono-, sesqui- or di-fatty acid ester of sorbitan.

[0011] [4] The cosmetic composition according to any one of [1] to [3], wherein component (b) comprises a copolymer of vinylpyrrolidone and an alpha-olefin with 12-32 carbon atoms.

[0012] [5] The cosmetic composition according to any one of [1] to [4], wherein component (c) comprises at least one selected from the group consisting of a candelilla wax extract, a carnauba wax extract, rosinate, hydrogenated rosinate and abietate.

[0013] [6] The cosmetic composition according to any one of [1] to [5], wherein component (d) comprises hydrophobized titanium dioxide and / or hydrophobized iron oxide.

[0014] [7] The cosmetic composition according to any one of [1] to [6], further comprising (f) a UV filter comprising an organic UV filter and / or an inorganic UV filter.

[0015] [8] The cosmetic composition according to [7], wherein the inorganic UV filter comprises titanium dioxide and / or zinc oxide.

[0016] [9] The cosmetic composition according to any one of [1] to [8], further comprising at least one selected from the group consisting of salicylate ester, hydrophobized silica and hydrophobized cellulose.

[0017]

[0010] The cosmetic composition according to any one of [1] to [9], wherein the content of component (a) is 1.0 to 20 mass%.

[0018]

[0011] The cosmetic composition according to any one of [1] to

[0010] , wherein the ratio of the content of component (a2) with respect to the content of component (a1) [component (a2) / component (a1)] is 0.05 to 20.

[0019]

[0012] The cosmetic composition according to any one of [1] to

[0011] , wherein the content of component (b) is 0.50 to 10.0 mass%.

[0020]

[0013] The cosmetic composition according to any one of [1] to

[0012] , wherein the content of component (c) is 0.50 to 10.0 mass%.

[0021]

[0014] The cosmetic composition according to any one of [1] to

[0013] , wherein the content of component (d) is 1.0 to 40 mass%.

[0022]

[0015] The cosmetic composition according to any one of [1] to

[0014] , wherein component (a1) comprises polyglyceryl-6 polyricinoleate and / or polyglycerlyl-3 diisostearate, component (a2) comprises sorbitan sesquioleate, component (b) comprises a copolymer of vinylpyrrolidone and eicosene, component (c) comprises candelilla resin, component (d) comprises hydrophobized titanium dioxide and / or hydrophobized iron oxide, and component (e) comprises a C9-C12 alkane.

[0023]

[0016] The cosmetic composition according to any one of [1] to

[0015] , wherein the cosmetic composition comprises 1.0 to 20 mass% of component (a), 0.5 to 10 mass% of component (b), 0.5 to 10 mass% of component (c), 1.0 to 40 mass% of component (d) and 1.0 to 30 mass% of component (e), based on the total amount of the composition.

[0024]

[0017] The cosmetic composition according to any one of [1] to

[0016] , wherein the cosmetic composition is in the form of a foundation.

[0025]

[0018] A cosmetic process for caring for and / or making-up keratinic materials, wherein the cosmetic process comprises the application onto keratinic materials, in particular onto skin, of the water-in-oil emulsion cosmetic composition according to any one of [1] to

[0017] .

[0026]

[0019] The cosmetic process according to

[0018] , wherein the water-in-oil emulsion cosmetic composition provides the keratinic materials on which it is applied with a high coverage effect, a lightweight, thin make-up film layer, a comfortable skin finish without sticky texture, a long-lasting effect and robust stability.

[0027]

[0020] A cosmetic product comprising a support in a non-compressed state, and a cosmetic composition impregnated in the support, wherein the cosmetic composition is the cosmetic composition according to any one of [1] to

[0019] .

[0028]

[0021] A cosmetic package comprising a container and the cosmetic product according to

[0020] , wherein the cosmetic product is placed inside of the container.

[0029] According to the invention there is provided a water-in-oil emulsion cosmetic composition having the properties of 1) a high coverage effect, 2) a lightweight, thin make-up film layer (in other words, a non-occlusive, breathable or airy thin make-up film layer), 3) a comfortable skin finish without sticky texture, 4) a long-lasting effect and 5) robust stability.

[0030] The water-in-oil emulsion cosmetic composition according to one embodiment comprises component (a): a nonionic surfactant having an HLB value of less than 8, wherein component (a) comprises component (a1): a polyglycerol fatty acid ester and component (a2): a sorbitan fatty acid ester. Component (a1) functions as a surfactant, and it is used in combination with component (a2) which likewise functions as a surfactant. When only either one of component (a1) and component (a2) is used as a surfactant, the stability is lowered and it becomes difficult to form a lightweight, thin make-up film layer.

[0031] The HLB value of component (a) may be 2 to 7, 2 to 6, 2 to 5, 3 to 7, 3 to 6, 3 to 5 or 4 to 6. The HLB value of component (a) may also be 1 or greater, 2 or greater or 3 or greater.

[0032] Component (a) may be of a single type, or several different types may be used in combination. When component (a) includes several different types, the HLB value of component (a) as a whole may be less than 8, in which case the HLB value is calculated as the weighted average of the HLB values of the components.

[0033] The HLB value is an index representing the ratio of the relative affinity of a surfactant with respect to both liquids in an oil-aqueous system, and the HLB value used for the purpose of the invention is based on the definition of Griffin, at 25°C. The Griffin HLB value is described in J. Soc. Cosm. Chem., 1954, 5:249-256.

[0034] The content of component (a) may be 1.0 to 20 mass%, preferably 2.0 to 20 mass%, 3.0 to 20 mass%, 4.0 to 20 mass%, 5.0 to 20 mass%, 1.0 to 15 mass%, 2.0 to 15 mass%, 3.0 to 15 mass%, 4.0 to 15 mass%, 5.0 to 15 mass%, 1.0 to 10 mass%, 2.0 to 10 mass%, 3.0 to 10 mass%, 4.0 to 10 mass%, 5.0 to 10 mass%, 1.0 to 8.0 mass%, 2.0 to 8.0 mass%, 3.0 to 8.0 mass%, 4.0 to 8.0 mass%, 5.0 to 8.0 mass%, 1.0 to 7.5 mass%, 2.0 to 7.5 mass% or 3.0 to 7.5 mass%, based on the total mass of the cosmetic composition. If the content of component (a) is within this range, the emulsified state will be more stabilized and a higher coverage effect and more comfortable feel can be obtained.

[0035] The polyglycerol fatty acid ester as component (a1) is the reaction product of polyglycerol and a fatty acid. The mean polymerization degree of the polyglycerol in the polyglycerol fatty acid ester may be 2 to 12, 2 to 10, 2 to 8 or 2 to 6. This will further improve the stability of the cosmetic composition.

[0036] The fatty acid forming component (a1) may be a fatty acid of 8 to 24 carbon atoms, a fatty acid of 10 to 20 carbon atoms or a fatty acid of 12 to 18 carbon atoms. This will further improve the stability of the cosmetic composition. Such fatty acids may be saturated or unsaturated, and may also have hydroxyl groups. Examples of fatty acids for component (a1) include palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, α-linolenic acid, γ-linolenic acid, isostearic acid, arachidic acid, arachidonic acid, behenic acid and ricinolic acid. Such fatty acids wherein one or more hydrogens of the hydrocarbon groups in the fatty acids are replaced by hydroxyl groups (hydroxy fatty acids).

[0037] Component (a1) may also include one or more selected from the group consisting of an ester of hydroxy fatty acid polycondensate and polyglycerol, and a mono- or poly-fatty acid ester of polyglycerol.

[0038] Esters of hydroxy fatty acid polycondensates and polyglycerol are reaction products of polyglycerol with polycondensates of the hydroxy fatty acids themselves, and they can be represented by the following general formula (1). (Chemical Formula 1) (In the formula, R10is a group represented by general formula (2) below or a hydrogen atom, with at least one of the R10groups being a group represented by general formula (2). The letter n represents an integer of 2 or greater.) The letter n may be 2 to 12, 2 to 10, 2 to 8 or 2 to 6.

[0039] (Chemical Formula 2) (In the formula, R20represents a divalent saturated or unsaturated hydrocarbon group as the residue of a hydroxy fatty acid, and m represents an integer of one or greater. The symbol * represents a bonding site.) The number of carbon atoms of R20may be 11 to 23, 15 to 21 or 15 to 19.

[0040] Mono- or poly-fatty acid esters of polyglycerol can be represented by the following general formula (3).

[0041] (Chemical Formula 3) (In the formula, R11is a group represented by general formula (4) below or a hydrogen atom, with at least one of the R11groups being a group represented by general formula (4). The letter r represents an integer of 2 or greater.) The letter r may be 2 to 12, 2 to 10, 2 to 8 or 2 to 6.

[0042] (Chemical Formula 4) (In the formula, R21represents a monovalent saturated or unsaturated hydrocarbon group as the residue of a fatty acid. The symbol * represents a bonding site.)

[0043] As mentioned above, the polyglycerol fatty acid ester may be of many different types depending on the type of fatty acid, and since the structure will differ depending on the glycerol polymerization degree even if the same fatty acid is used, it may have different HLB values. The HLB value of component (a1) may be less than 8, and it may be 2 to 7, 2 to 6, 2 to 5, 3 to 7, 3 to 6, 3 to 5 or 4 to 6. The HLB value of component (a1) may also be 1 or greater, 2 or greater or 3 or greater. Component (a1) may be of a single type, or several different types may be used in combination.

[0044] Esters of hydroxy fatty acid polycondensates and polyglycerol having the structure of general formula (1) and an HLB value of less than 8 include polyglyceryl-6 polyricinoleate, polyglyceryl-3 polyricinoleate, polyglyceryl-4 polyricinoleate, polyglyceryl-5 polyricinoleate, polyglyceryl-10 polyricinoleate, polyglyceryl-2 dipolyhydroxystearate, polyglyceryl-6 polyhydroxystearate, polyglyceryl-10 decahydroxystearate, polyglyceryl-10 heptahydroxystearate and polyglyceryl-10 pentahydroxystearate.

[0045] Mono- or poly-fatty acid esters of polyglycerol having the structure of general formula (3) and an HLB value of less than 8 include polyglyceryl-3 diisostearate, polyglyceryl-2 diisostearate, polyglyceryl-2 isostearate, polyglyceryl-2 stearate, polyglyceryl-2 oleate, polyglyceryl-4 stearate, polyglyceryl-4 oleate, polyglyceryl-4 tristearate, polyglyceryl-10 tristearate, polyglyceryl-10 trioleate, polyglyceryl-10 pentastearate and polyglyceryl-10 pentaoleate.

[0046] The content of component (a1) may be 1.0 to 20 mass%, 2.0 to 20 mass%, 2.5 to 20 mass%, 1.0 to 15 mass%, 2.0 to 15 mass%, 2.5 to 15 mass%, 1.0 to 10 mass%, 1.5 to 10 mass%, 2.0 to 10 mass%, 2.5 to 10 mass%, 1.0 to 7.5 mass%, 1.5 to 7.5 mass%, 2.0 to 7.5 mass%, 2.5 to 7.5 mass%, 1.0 to 5.0 mass%, 1.5 to 5.0 mass%, 2.0 to 5.0 mass%, 2.5 to 5.0 mass%, 1.0 to 4.0 mass%, 1.5 to 4.0 mass%, 2.0 to 4.0 mass% or 2.5 to 4.0 mass%, based on the total mass of the cosmetic composition. This will further facilitate formation of an emulsified state by the cosmetic composition.

[0047] The sorbitan fatty acid ester as component (a2) is the reaction product of sorbitan and a fatty acid. Sorbitan has four fatty acid-reactive hydroxyl groups per molecule, with 1, 2, 3 or 4 of the four hydroxyl groups potentially reacting with a fatty acid to form a sorbitan fatty acid ester. For example, a mono-fatty acid ester of sorbitan is the reaction product of one of the four hydroxyl groups of sorbitan with a fatty acid, a di-fatty acid ester of sorbitan is the reaction product of two hydroxyl groups with a fatty acid, and a sesqui-fatty acid ester of sorbitan is a mixture of these, being the reaction product of sorbitan with an average of 1.5 fatty acids.

[0048] Component (a2) may include a mono-fatty acid ester of sorbitan, a sesqui-fatty acid ester of sorbitan or a di-fatty acid ester of sorbitan. This will help provide the cosmetic composition with a comfortable skin finish and robust stability. Such examples for component (a2) include sorbitan sesquioleate, sorbitan sesquiisostearate, sorbitan isostearate, sorbitan palmitate, sorbitan stearate, sorbitan trioleate and sorbitan oleate.

[0049] Sorbitans to compose component (a2) include 1,4-sorbitan having a tetrahydrofuran backbone and 1,5-sorbitan having a tetrahydropyran backbone, and component (a2) may comprise any of these backbones, or it may be a mixture of compounds having such backbones.

[0050] The fatty acid forming component (a2) may be a fatty acid of 12 to 24, 16 to 22 or 16 to 20 carbon atoms, and may be either a saturated fatty acid or an unsaturated fatty acid. Examples of such fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, sesquistearic acid, sesquiisostearic acid, oleic acid and sesquioleic acid.

[0051] Since numerous types of sorbitan fatty acid esters exist depending on the type of fatty acid and the number of fatty acids reacting with sorbitan, the HLB value may be any of various numerical values. The HLB value of component (a2) may be less than 8, and it may be 2 to 7, 2 to 6, 2 to 5, 3 to 7, 3 to 6, 3 to 5 or 4 to 6. The HLB value of component (a2) may also be 1 or greater, 2 or greater or 3 or greater. Component (a2) may be of a single type, or several different types may be used in combination.

[0052] The content of component (a2) may be 1.0 to 20 mass%, 2.0 to 20 mass%, 2.5 to 20 mass%, 1.0 to 15 mass%, 2.0 to 15 mass%, 2.5 to 15 mass%, 1.0 to 10 mass%, 1.5 to 10 mass%, 2.0 to 10 mass%, 2.5 to 10 mass%, 1.0 to 7.5 mass%, 1.5 to 7.5 mass%, 2.0 to 7.5 mass%, 2.5 to 7.5 mass%, 1.0 to 5.0 mass%, 1.5 to 5.0 mass%, 2.0 to 5.0 mass%, 2.5 to 5.0 mass%, 1.0 to 4.0 mass%, 1.5 to 4.0 mass%, 2.0 to 4.0 mass% or 2.5 to 4.0 mass%, based on the total mass of the cosmetic composition. This will help provide a more comfortable skin finish and further help to maintain robust stability for the cosmetic composition.

[0053] The ratio of the content of component (a2) with respect to the content of component (a1) [component (a2) / component (a1)] may be 0.05 to 20, preferably 0.1 to 10, 0.12 to 8.0, 0.15 to 6.6, 0.2 to 5.0, 0.25 to 4.0, 0.3 to 3.0, 0.4 to 2.0, 0.5 to 2.0 or 0.5 to 1.5, as the mass ratio.

[0054] The water-in-oil emulsion cosmetic composition of the embodiment comprises component (b): a copolymer of vinylpyrrolidone and an alpha-olefin. The alpha-olefin in component (b) may be an alpha-olefin of 12 to 32 carbon atoms, or an alpha-olefin of 14 to 30 carbon atoms, 16 to 30 carbon atoms or 20 to 30 carbon atoms. Component (b) may also include vinylpyrrolidone and an alpha-olefin of 12 to 32 carbon atoms, which will further improve the long-lasting effect of the cosmetic composition.

[0055] Component (b) may be (vinylpyrrolidone / dodecene) copolymer, (vinylpyrrolidone / tetradecene) copolymer, (vinylpyrrolidone / hexadecene) copolymer, (vinylpyrrolidone / eicosene) copolymer, (vinylpyrrolidone / dococene) copolymer, (vinylpyrrolidone / triacontene) copolymer, or a mixture of the same. Particularly preferred for component (b) is a copolymer of vinylpyrrolidone and eicosene.

[0056] The content of component (b) may be 0.50 to 10.0 mass%, preferably 0.50 to 8.0 mass%, 1.0 to 8.0 mass% or 1.0 to 6.0 mass%, based on the total amount of the cosmetic composition. This can provide a more comfortable skin finish and further improve the long-lasting effect.

[0057] The water-in-oil emulsion cosmetic composition of the embodiment also comprises component (c): a plant-derived resin. For the present purpose, plant-derived resins are clearly distinguished from plant-derived waxes. That is, "plant-derived resin" means a resin that can be obtained by extraction from a plant-derived wax (a mixture of resins, hydrocarbons and wax esters), i.e. a plant-derived wax extract. Plant-derived waxes include candelilla wax and carnauba wax. The method of extracting the resin portion from a plant-derived wax may be the method described in Japanese Unexamined Patent Publication HEI No. 11-60538, for example.

[0058] Candelilla wax is said to contain 24 to 30 mass% esters, 10 to 20 mass% free fatty acids, 10 to 15 mass% free alcohols, 40 to 50 mass% hydrocarbons and 15 to 18 mass% resins, but candelilla wax extract (the resin derived from candelilla wax) is the resin component obtained by removing the esters, free fatty acids, free alcohols and hydrocarbons from candelilla wax using a solvent. Carnauba wax is said to contain 80 to 85 mass% esters, 3 to 4 mass% free fatty acids, 10 to 12 mass% free alcohols, 1 to 3 mass% hydrocarbons and 6 to 9 mass% resins, but carnauba wax extract (the resin derived from carnauba wax) is the resin component obtained by removing the esters, free fatty acids, free alcohols and hydrocarbons from carnauba wax using a solvent. The esters, free fatty acids, free alcohols and hydrocarbons may be completely removed, or they may remain in amounts that do not affect performance of the resin.

[0059] Component (c) may be a candelilla wax extract (candelilla resin), a carnauba wax extract (carnauba resin), hydrogenated glyceryl rosin acid, hydrogenated pentaerythrityl rosin acid, abietic acid ester or shorea resin (dammar resin). Component (c) may include a single type of resin or multiple types.

[0060] Component (c) may include one or more selected from the group consisting of a candelilla wax extract, a carnauba wax extract, rosin acid ester, hydrogenated rosin acid ester and abietic acid ester. This will further improve the long-lasting effect of the cosmetic composition. Candelilla wax extract is most preferred as component (c).

[0061] The content of component (c) may be 0.50 to 10.0 mass%, 0.50 to 8.0 mass%, 1.0 to 8.0 mass% or 1.0 to 6.0 mass%, based on the total amount of the cosmetic composition. This can further improve the long-acting effect.

[0062] By comprising both component (b) and component (c), the water-in-oil emulsion cosmetic composition of the embodiment is able to exhibit excellent friction resistance and a smooth texture. The friction resistance influences the long-lasting effect. Using only component (b) from among component (b) and component (c) will tend to reduce the friction resistance, while using only component (c) will tend to produce a sticky texture. By comprising a combination of component (b) and component (c), the cosmetic composition tends to be more resistant to crack formation in the makeup film than a cosmetic composition using a conventional silicone-based resin, even with addition of a large amount of powder such as pigment powder, allowing a more even makeup film to be formed.

[0063] The ratio of the content of component (c) with respect to the content of component (b) [component (c) / component (b)] may be 0.2 to 5.0, 0.25 to 4.0, 0.3 to 3.5 or 0.3 to 2.0, as the mass ratio. This can provide a better balance between the 2) lightweight, thin make-up film layer, 3) comfortable skin finish without sticky texture and 4) long-lasting effect.

[0064] The water-in-oil emulsion cosmetic composition of the embodiment also comprises component (d): a hydrophobized pigment. Component (d) may be provided as a hydrophobized pigment that has been surface-treated with a hydrophobic agent. Surface treatment of the pigment with a hydrophobic agent can inhibit aggregation within the pigment, helping to more evenly and stably disperse the pigment in the cosmetic composition. By including a hydrophobized pigment it is possible to adjust the color tone of the cosmetic composition while maintaining properties 1) to 5) described above. The surface-treated pigment may be either an inorganic pigment or an organic pigment.

[0065] Examples of surface-treated inorganic pigments include titanium dioxide, iron oxide, zinc oxide, cerium oxide, aluminum oxide, bengala, Prussian blue, chromium oxide and chromium hydroxide. Titanium dioxide is known as a white pigment, and iron oxide is known as a red, yellow or black colored pigment. When titanium dioxide particles are included as an inorganic pigment, the particle diameter of the titanium dioxide particles is 200 nm or greater. Such titanium dioxide particles are known as a type of white color pigment. These may be appropriately combined for adjustment to a desired color tone. Examples of surface-treated organic pigments include D&C Red No. 7 and D&C Red No. 6.

[0066] Component (d) may also include hydrophobized titanium dioxide and / or hydrophobized iron oxide.

[0067] The cosmetic composition may also include a non-hydrophobic-treated pigment other than component (d) as a pigment. Specifically, it may include any pigment mentioned as a color pigment for component (d) that has not been hydrophobically treated.

[0068] The hydrophobic agent may be one or more selected from the group consisting of titanate-based surface treatment agents, amino acid-based surface treatment agents, metal soap-based surface treatment agents, ester-based surface treatment agents, silicone-based surface treatment agents, fluorine compound-based surface treatment agents and lipid-based surface treatment agents.

[0069] Examples of titanate-based surface treatment agents include isopropyl titanium triisostearate, isopropyl titanium tristearate, triisopropyl titanium isostearate, isopropyl titanium tripalmitate and isopropyl titanium trimyristate.

[0070] Examples of amino acid-based surface treatment agents include glycine, alanine, sarcosine, proline, hydroxyproline, aspartic acid, glutamic acid and lysine. These amino acids may also be acylated with fatty acids. The fatty acid is preferably a saturated or unsaturated fatty acid of 1 to 22 carbon atoms, and more preferably a saturated or unsaturated fatty acid of 8 to 20 carbon atoms. Such acylated amino acid-based surface treatment agents include stearoyl glutamic acid, lauroyl glutamic acid, lauroyl aspartic acid, myristoyl glutamic acid, stearoyl lysine, lauroyl lysine, myristoyl lysine and palmitoyl proline. A preferred acylated amino acid is stearoyl glutamic acid. An amino acid salt may be a sodium, potassium, calcium, magnesium or aluminum salt. Specific examples of acylated amino acid-based surface treatment agents in salt form include sodium myristoyl glutamate, disodium stearoyl glutamate, sodium lauroyl aspartate, dilauramidoglutamide lysine, sodium palmitoyl sarcosinate, magnesium palmitoyl glutamate and disodium cocoyl glutamate.

[0071] Examples of metal soap-based surface treatment agents include aluminum myristate and magnesium stearate.

[0072] Examples of ester-based surface treatment agents include isostearyl sebacate, dextrin fatty acid esters and polyglyceryl-2 tetraisostearate.

[0073] Examples of silicone-based surface treatment agents include methicone, hydrogen dimethicone, dimethicone, tetramethoxysilane, methyltrimethoxysilane, dimethyldimethoxysilane, tetraethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, isobutyltrimethoxysilane, decyltrimethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, octadecyltriethoxysilane and hexadecyltriethoxysilane.

[0074] Examples of fluorine compound-based surface treatment agents include perfluorohexylethyltriethoxysilane, trifluoropropyltrimethoxysilane, trifluoropropyltriethoxysilane, tridecafluorooctyltrimethoxysilane and tridecafluorooctyltriethoxysilane.

[0075] Examples of other lipid-based surface treatment agents include phospholipids, lecithin, triglycerides, fats and oils, waxes and acrylic-based surface treatment agents.

[0076] Examples of acrylic surface treatment agents include random copolymerized products with ethyl (meth)acrylate, butyl (meth)acrylate, octyl (meth)acrylate, decyl (meth)acrylate, lauryl (meth)acrylate, myristyl (meth)acrylate, palmityl (meth)acrylate, stearyl (meth)acrylate, oleyl (meth)acrylate or linoleyl (meth)acrylate.

[0077] The content of component (d) may be 1.0 to 40 mass%, preferably 1.0 to 35 mass%, 1.0 to 30 mass%, 1.0 to 25 mass%, 1.0 to 20 mass%, 5.0 to 40 mass%, 5.0 to 35 mass%, 5.0 to 30 mass%, 5.0 to 25 mass%, 5.0 to 20 mass%, 10 to 40 mass%, 10 to 35 mass%, 10 to 30 mass%, 10 to 25 mass% or 10 to 20 mass%, based on the total amount of the cosmetic composition. This can further aid in obtaining a coverage effect, a lightweight, thin make-up film layer and robust stability.

[0078] In order to obtain a hydrophobized pigment, aluminum hydroxide may be used as a surface treatment agent in addition to the hydrophobic agent. Particularly when the pigment is one with catalytic activity, such as titanium oxide, aluminum hydroxide is effective for blocking the catalytic activity.

[0079] The water-in-oil emulsion cosmetic composition of the embodiment also comprises (e) an oil comprising a volatile hydrocarbon oil. Component (e) may be a volatile straight-chain hydrocarbon oil or a volatile branched-chain hydrocarbon oil, and it may be a polar oil or non-polar oil.

[0080] The term "volatile oil" means an oil which has lost 4% or more (preferably 5% or more, more preferably 8% or more, more preferably 20% or more, more preferably 60% or more and most preferably 80% or more) of its mass after 60 minutes of drying at a temperature of 33°C and a humidity of 55%, according to the following protocol: 20 mg of the oil to be examined is weighed on a 5 cm × 5 cm polymethyl methacrylate (PMMA) plate using a micropipette and a precision balance. The oil to be examined is spread with a finger over the entire plate. The plate is then placed in a ventilated enclosure thermostatically controlled to 25% humidity. The test is carried out 3 times for each oil. The loss of mass during drying is measured after 60 minutes. The mass lost is expressed according to the following formula (1): (Formula 1)

[0081] In formula (1), mtxrepresents the mass of the plate as measured 60 minutes after the start of drying and mt0represents the mass of the plate as measured before drying. A volatile hydrocarbon oil is a liquid at ordinary temperature (25°C) and ordinary pressure (1 bar) and may also be considered to be a gradually-vaporizing oily component.

[0082] Component (e) may be a volatile hydrocarbon oil of 8 to 16 carbon atoms. Component (e) may be one or more selected from the group consisting of branched C8-C16 alkanes (such as isoparaffins, isododecane, isodecane and isohexadecane), linear C8-C16 alkanes (such as nonane, decane, undecane, dodecane, tridecane, tetradecane, pentadecane and hexadecane), and mixture thereof of said liner of branched alkanes. Such mixtures can be mixtures of C8-C16 alkanes, preferably mixtures of C9-C16 alkanes, mixtures of C9-C15 alkanes, mixtures of C10-C14 alkanes, mixtures of undecane and tridecane, mixtures of C11-C13 alkanes, mixtures of C9-C12 alkanes, mixtures of C13-C15 alkanes, mixtures of C12-C14 alkanes, n-dodecane and n-tetradecane. Component (e) preferably includes a volatile linear hydrocarbon having 9 to 12 carbon atoms.

[0083] An oil with a mass loss value of 4% or more but not more than 20% by mass can be considered a "slightly volatile oil". Slightly volatile oils include isohexadecane, pentadecane, hexadecane, C13-C16 alkanes, C13-C15 alkanes, and mixtures of alkanes with a mass loss value of 4% or more but not more than 20% mass such as C15-C19 alkanes. If the cosmetic composition comprises a slightly volatile oil, the smoothness of the cosmetic composition will tend to be improved.

[0084] An oil with a mass loss value of 20% or more but not more than 80% by mass can be considered a "moderately volatile oil". Moderately volatile oils include linear C9-12 alkanes, for example, undecane, dodecane, tridecane and mixtures of alkanes with a mass loss value of 20% or more. If the cosmetic composition comprises a moderately volatile oil, the balance between the smoothness and skin adhesiveness of the cosmetic composition can be improved.

[0085] An oil with a mass loss value of 60% or more by mass, more preferably 80% or more by mass can be considered a "highly volatile oil". Highly volatile oils include nonane, decane, isododecane and mixtures of alkanes with a mass loss value of 80% or more by mass such as branched C9-12 alkanes. If the cosmetic composition comprises a highly volatile oil, the skin adhesiveness of the cosmetic composition will tend to be improved.

[0086] The content of component (e) may be 1.0 to 30 mass%, 2.0 to 30 mass%, 3.0 to 30 mass%, 4.0 to 30 mass%, 5.0 to 30 mass%, 1.0 to 25 mass%, 2.0 to 25 mass%, 3.0 to 25 mass%, 4.0 to 25 mass%, 5.0 to 25 mass%, 1.0 to 20 mass%, 2.0 to 20 mass%, 3.0 to 20 mass%, 4.0 to 20 mass%, 5.0 to 20 mass%, 1.0 to 15 mass%, 2.0 to 15 mass%, 3.0 to 15 mass%, 4.0 to 15 mass%, 5.0 to 15 mass%, 1.0 to 13 mass%, 2.0 to 13 mass%, 3.0 to 13 mass%, 4.0 to 13 mass% or 5.0 to 13 mass%, based on the total mass of the cosmetic composition. If the content of component (e) is 1.0 mass% or greater it will be possible to maintain a low level of viscosity for the cosmetic composition, thus allowing a thinner cosmetic layer to be formed, and a tendency toward thinner cosmetic layer formation is possible with increasing content of component (e) up to at least 30 mass%. If the content of component (e) is 30 mass% or lower, it will be easier to maintain a suitable viscosity for the cosmetic composition and to further increase product stability, and a tendency toward further increase in product stability is possible with decreasing content of component (e) up to at least 1.0 mass%. A cosmetic composition with an excessively low viscosity will tend to result in aggregation and / or caking of pigment at the bottom of the container. A cosmetic composition with suitable viscosity, therefore, can maintain a desirable outer appearance for prolonged periods when displayed on product shelves or when stored, thus helping to increase the commercial value.

[0087] The cosmetic composition according to one embodiment also comprises component (f): a UV filter. This can provide an effect whereby component (f) absorbs or scatters ultraviolet rays, preventing the ultraviolet rays from reaching the skin. UV filters include organic UV filters and / or inorganic UV filters.

[0088] Examples of organic UV filters include oil-soluble organic UV filters such as ethylhexyl salicylate, octyl methoxycinnamate, homosalate and octocrylene, and water-soluble organic UV filters including benzophenone-based ultraviolet absorbers such as 2-hydroxy-4-methoxybenzophenone-5-sulfonate; benzylidene camphor-based ultraviolet absorbers such as benzylidene camphor sulfonic acid and terephthalylidene dicamphor sulfonic acid; and phenylbenzimidazole-based ultraviolet absorbers such as phenylbenzimidazole sulfonic acid.

[0089] Neutralization is necessary when phenylbenzimidazole sulfonic acid, for example, is used as a water-soluble organic UV filter. Substances other than phenylbenzimidazole sulfonic acid that are known to require neutralization for use are also preferably neutralized before use. Neutralization may be carried out by a common method, by mixing a neutralizer so that the pH of the liquid mixture of phenylbenzimidazole sulfonic acid with the neutralizer is 6.0 to 8.0 at ordinary temperature. Neutralizers include sodium hydroxide, potassium hydroxide, triethanolamine, tromethamine and arginine.

[0090] Inorganic UV filters include titanium dioxide, zinc oxide, silica, alumina and cerium compounds, and such inorganic UV filters may also include titanium dioxide and / or zinc oxide. Inorganic UV filters are clearly distinguished from pigments lacking ultraviolet-blocking properties and pigments whose primary use is for coloring. The particle diameter of the inorganic UV filter may be less than 200 nm, such as>10 nm and <200 nm, 10 to 150 nm, 10 to 100 nm, 10 to 50 nm,>100 nm and <200 nm or>150 nm and <200 nm, for example.

[0091] The inorganic UV filter may have at least a portion that is hydrophobized on the surface and / or the interior. The hydrophobic agent may be one or more selected from the group consisting of titanate-based surface treatment agents, amino acid-based surface treatment agents, metal soap-based surface treatment agents, ester-based surface treatment agents, silicone-based surface treatment agents, fluorine compound-based surface treatment agents and lipid-based surface treatment agents. The inorganic UV filter may also be a combination of two or more different types of hydrophobically-treated particles, or it may be a combination of non-hydrophobically-treated particles and hydrophobically-treated particles. The hydrophobic agent used for hydrophobizing of the inorganic UV filter may be any hydrophobic agent used for hydrophobizing of the aforementioned pigments.

[0092] Component (f) may have at least a portion that is hydrophobized on the surface and / or the interior. The hydrophobic agent used for hydrophobic treatment of component (f) may be any hydrophobic agent for the aforementioned pigments. Component (f) may also be a combination of two or more different types of hydrophobically-treated particles, or it may be a combination of non-hydrophobically-treated particles and hydrophobically-treated particles.

[0093] When the surface and / or interior of component (f) is to be hydrophobically treated, it may be treated with a surface treatment agent such as aluminum hydroxide, alumina or silica in addition to the hydrophobic treatment described above. When component (f) has catalytic activity, aluminum hydroxide is particularly effective for blocking the catalytic activity.

[0094] According to a preferred embodiment, the cosmetic composition may comprise component (f) having the surface and / or interior hydrophobized with a specific treatment agent selected from among isopropyl titanium triisostearate treatment, sodium lauroyl aspartate and sodium hydroxide treatment, palmitoyl proline, sodium palmitoyl sarcosinatemagnesium palmitoyl glutamate and palmitic acid treatment, disodium cocoyl glutamate and aluminum hydroxide treatment, isostearyl sebacate, disodium stearoyl glutamate and aluminum hydroxide treatment, aluminum dimyristate treatment, polyglyceryl-2 tetraisostearate treatment, dimethicone treatment, dimethicone, sodium myristoyl glutamate and aluminum hydroxide treatment, methicone treatment, hydrogen dimethicone treatment, triethoxycaprylylsilane treatment, dimethiconol and aminopropyltriethoxysilane treatment, glycolipid treatment, magnesium stearate treatment and sodium dilauroyl glutamate, lysine and magnesium chloride treatment.

[0095] The content of component (f) may be 1.0 to 40 mass%, preferably 5.0 to 40 mass%, 7.0 to 40 mass%, 1.0 to 35 mass%, 5.0 to 35 mass%, 7.0 to 35 mass%, 1.0 to 30 mass%, 5.0 to 30 mass%, 7.0 to 30 mass%, 1.0 to 25 mass%, 5.0 to 25 mass%, 7.0 to 25 mass%, 1.0 to 20 mass%, 5.0 to 20 mass% or 7.0 to 20 mass%, based on the total mass of the cosmetic composition. If the content of component (f) is 1.0 mass% or greater a higher ultraviolet ray protecting effect will be exhibited, with an even higher ultraviolet ray protecting effect tending to be exhibited as the content of component (f) increases, at least up to 40 mass%. If the content of component (f) is 40 mass% or lower, the powdery feel can be further inhibited when it is applied onto skin, with the powdery feel tending to be even further inhibited with decreasing content of component (f), at least up to 1.0 mass%.

[0096] The cosmetic composition according to one embodiment may also comprise other components in addition to the components described above. For example, it may include an aqueous phase component. The aqueous phase component may include one or more components selected from the group consisting of purified water and alcohols.

[0097] An alcohol may include a polyol of 1 to 8 carbon atoms. Examples of polyols of 1 to 8 carbon atoms include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol (propanediol), 1,3-butylene glycol, 1,2-pentanediol (pentylene glycol), 1,2-hexanediol, 1,2-octanediol and glycerin.

[0098] The content of the polyol of 1 to 8 carbon atoms may be 0.5 to 20 mass%, 0.5 to 15 mass%, 0.5 to 10 mass% or 0.5 to 5 mass%, based on the total mass of the cosmetic composition. If the content of the polyol of 1 to 8 carbon atoms is within this range it will be possible to further increase the moisturizing effect without destabilizing the emulsified state.

[0099] The alcohol may also include a monoalcohol of 1 to 3 carbon atoms. Examples of monoalcohols of 1 to 3 carbon atoms include ethanol, 1-propanol and 2-propanol (isopropanol).

[0100] The content of the monoalcohol of 1 to 3 carbon atoms may be 0.5 to 20 mass%, 0.5 to 15 mass%, 0.5 to 10 mass% or 0.5 to 5 mass%, based on the total mass of the cosmetic composition. If the content of the monool of 1 to 3 carbon atoms is within this range it will be easier to form a homogeneous film, and the coverage effect and long-lasting effect can be further increased.

[0101] The content of the aqueous phase component may be 10 to 80 mass%, 15 to 70 mass%, 20 to 60 mass%, 25 to 50 mass%, 30 to 45 mass% or 35 to 45 mass%, based on the total mass of the cosmetic composition. If the content of the aqueous phase component is within this range, then the freshness and coverage effect will be further improved when the cosmetic composition is applied onto skin, and the robust stability of the cosmetic composition will be further improved.

[0102] The cosmetic composition according to one embodiment may also include a non-volatile oil. A non-volatile oil is a non-volatile oil component that is liquid at ordinary temperature (in the range of 15 to 25°C) and ordinary pressure (1 atmosphere) which is not volatile according to the weight loss test described above. More specifically, the non-volatile oil is an oil component having a mass loss value (formula (1)) of less than 4 mass%, preferably less than 2%, or more preferably less than 1% after 60 minutes.

[0103] The non-volatile oil may preferably be a non-volatile hydrocarbon oil, higher alcohol, ester oil or vegetable oil, for example.

[0104] Examples of non-volatile hydrocarbon oils include alkanes having 17 or more than carbon atoms such as heptadecane, octadecane, nonadecane and mixtures therefore, for example C17-21 alkanes squalane, liquid paraffin, vaseline, polybutene, polyisobutene, hydrogenated polyisobutene, hydrogenated polydecene and olefin oligomers.

[0105] Higher alcohols are aliphatic monoalcohols of 6 or more carbon atoms, and preferably aliphatic monoalcohols of 12 to 28 carbon atoms. Examples of higher alcohols include octyl alcohol, dodecyl alcohol, oleyl alcohol, octyldodecanol, ceryl alcohol and myristyl alcohol.

[0106] Ester oils are carboxylic acid esters that are liquid in environments at ordinary temperature and pressure (for example, 25°C, 1 atmosphere) and do not gasify, and they are preferably carboxylic acid alkyl esters wherein the carboxylic acid or alcohol of the ester has 8 to 18 carbon atoms. Examples of ester oils include propylene glycol fatty acid esters such as propylene glycol dicaprylate and propylene glycol dicaprate; fatty acid alkyl esters such as ethylhexyl palmitate, isopropyl myristate, 2-octyldodecyl myristate, cetyl 2-ethylhexanoate, coco-caprylates / caprates and isononyl isononanoate; carbonic acid esters such as dicaprylyl carbonate; tri and greater fatty acid esters of polyglycerols, such as polyglyceryl-2 triisostearate, polyglyceryl-2 tetraisostearate and polyglyceryl-10 decaisostearate; glycerin tri-fatty acid esters such as glyceryl tri 2-ethylhexanoate, glyceryl tribehenate, glyceryl tri(caprylate / caprate) and triheptanoin (also known as triglyceride oils); benzoic acid derivatives such as diisostearyl malate and alkyl benzoate (C12-15); salicylic acid derivatives such as homosalates and ethylhexyl salicylate; alkyl esters such as cocoalkyl (caprylates / caprates); and cinnamic acid derivatives such as octyl methoxycinnamate, isopropyl methoxycinnamate, isoamyl methoxycinnamate, cinnoxate, DEA methoxycinnamate, diisopropyl methylcinnamate, glyceryl-ethyl hexanoate-dimethoxy cinnamate and di-(2-ethylhexyl)-4'-methoxybenzalmalonate.

[0107] Examples of vegetable oils include meadowfoam seed oil, olive fruit oil, camellia oil, coconut oil, macadamia nut oil, rosehip oil, avocado oil, sunflower seed oil, rice bran oil, castor oil and almond oil.

[0108] Propylene carbonate is another preferred non-volatile oil.

[0109] The content of the non-volatile oil may be 1 to 70 mass%, 1 to 50 mass%, 1 to 30 mass%, 1 to 20 mass%, 1 to 10 mass%, 1 to 5 mass%, 20 to 70 mass%, 20 to 50 mass%, 20 to 40 mass%, 20 to 30 mass%, 40 to 70 mass%, 40 to 60 mass% or 40 to 50 mass%, based on the total mass of the cosmetic composition. If the content of the non-volatile oil is 1 mass% or greater a higher moisturizing effect will be exhibited, with an even higher moisturizing effect tending to be exhibited as the content of the non-volatile oil increases, at least up to 70 mass%. If the content of the non-volatile oil is 70 mass% or lower the long-lasting effect will be increased, since the cosmetic layer that is formed will be resistant to plasticization, with an even longer lasting effect tending to be exhibited as the content of the non-volatile oil decreases, at least up to 1 mass%.

[0110] The cosmetic according to one embodiment may also include an oily gelling agent. If the cosmetic includes an oily gelling agent, it will be possible to form a three-dimensional higher-order structure (for example, a mesh-like three-dimensional structure) due to interaction between components or colloid particles that are dissolved or dispersed in the cosmetic. As a result, the flow property of the composition will tend to be lower and the viscosity will tend to increase. In other words, an oily gelling agent can function as a thickener. Increased viscosity results in a higher coverage effect and long-lasting effect, and can also exhibit an effect of inhibiting aggregation and / or caking of the pigment with prolonged storage.

[0111] Examples of oily gelling agents include organic modified clays, metal soaps, 12-hydroxystearic acid, sugar fatty acid esters, dextrin fatty acid esters such as dextrin palmitate, dextrin myristate, dextrin (palmitate / ethylhexanoate) and dextrin (palmitate / hexyldecanoate), amino acid-based gelling agents, silica microparticles (with diameters of less than 1 μm), and mixtures of the same. An oily gelling agent preferably includes an organic modified clay, with organic modified clays including disteardimonium hectorite and stearalkonium chloride hectorite.

[0112] The cosmetic composition according to one embodiment may further comprise a spherical powder such as silica, cellulose or starch, a stabilizer, for example, a salt such as sodium chloride or magnesium sulfate; or an antimicrobial agent; antioxidant; aromatic; amino acid; or active ingredient. The cosmetic composition according to one embodiment may further include one or more selected from the group consisting of salicylic acid ester, hydrophobized silica and hydrophobized cellulose, which can increase the effects of 1) to 5) described above in a balanced manner.

[0113] The cosmetic composition according to one embodiment may be a cosmetic that contains essentially or absolutely no cyclic silicone. That the cosmetic composition "contains essentially no" cyclic silicone allows for the content of the cyclic silicone to be 1 mass% or lower, 0.1 mass% or lower, 0.01 mass% or lower, 0.001 mass% or lower or 0.0001 mass% or lower, based on the total mass of the cosmetic composition.

[0114] The cosmetic composition according to one embodiment, and particularly a liquid cosmetic composition, may have a viscosity at 25°C that is 150 to 10,000 mPa.s (millipascal second), 1000 to 8000 mPa.s (millipascal second), 1200 to 6000 mPa.s (millipascal second), 1400 to 4000 mPa.s (millipascal second) or 1600 to 2500 mPa.s (millipascal second). The viscosity is measured using a rotational viscometer (for example, a Rheolab QC by Anton Paar GmbH), inserting an ST22-4V-40 spindle into the cosmetic composition that is housed in a container with an inner diameter of 4.5 cm and kept at 25°C, with measurement for 3 minutes at a rotational speed of 100 rpm.

[0115] The cosmetic composition according to one embodiment can be produced by the following procedure, for example. Specifically, first the oil-soluble components including component (a), component (b), component (c), component (d) and component (e) are mixed with the powder to obtain a mixture. The water-soluble components are then mixed with the previous mixture to obtain the cosmetic composition.

[0116] The cosmetic composition according to one embodiment may be a foundation, a BB cream, a concealer or a cosmetic base.

[0117] A cosmetic product, according to one embodiment, comprises a support and a cosmetic composition of the invention impregnated in the support. The support may be in a non-compressed state. The support may be a water-insoluble support. Water-insoluble supports include nonwoven fabrics made of simple or composite materials such as resins, pulp or cotton; resin-coated fiber materials; foamed bodies such as sponges, and porous bodies with continuous structures. The material of the support may be, for example, NBR (acrylonitrile-butadiene rubber), SBR (styrene-butadiene rubber), NR (natural rubber), urethane, nylon, polyolefin, polyester, EVA (ethylene-vinyl acetate), PVA (polyvinyl alcohol) or silicone elastomer, but there is no limitation to these materials so long as they can be impregnated with the cosmetic composition.

[0118] In the case of impregnating the support with a cosmetic composition according to one embodiment, the the cosmetic composition may have a viscosity at 25°C that is 1000 to 8000 mPa.s (millipascal second), 1200 to 6000 mPa.s (millipascal second), or 1400 to 4000 mPa.s (millipascal second). These viscosity ranges are particularly suitable for the stable impregnation of the cosmetic composition within the support. The viscosity is measured using the method as descrived above.

[0119] The cosmetic product according to one embodiment may be a cushion foundation, cushion BB cream, cushion concealer or cushion cosmetic base. A cushion composition is defined as a foamed body such as a sponge impregnated with a cosmetic composition of the invention. For example, a cushion foundation is a foamed body impregnated with a foundation.

[0120] A cosmetic package according to one embodiment comprises a container and a cosmetic product of the invention placed inside of the container. The cosmetic package may be an air-tight cosmetic package wherein the container has an air-tight function. The container of a cosmetic package, being designed for opening and closing for use, is preferably sufficiently air-tight without causing difficulty during opening and closing. Specifically, the air-tight cosmetic package may be a compact one.Example

[0121] The present invention will now be explained by the following Examples, with the understanding that the invention is not limited by the Examples.

[0122] (Examples 1 to 4 and Comparative Examples 5 to 14) Cosmetic compositions for Examples 1 to 4 and Comparative Examples 5 to 14 were prepared by the following procedure using the components listed in Tables 1 to 3. The units for the contents of each of the components in Tables 1 to 3 are mass%. The TITANIUM DIOXIDE (treated with ALUMINUM HYDROXIDE, SODIUM MYRISTOYL GLUTAMATE) in Tables 1 to 3 have particle sizes of 200 nm or greater, and since they are pigments serving primarily for coloring they are not included in the inorganic UV filter. Step 1: The oil-soluble components such as component (a), component (b), component (c), component (d) and component (e) and the powder were mixed using a homogenizer at room temperature. Step 2: Water, propanediol, pentylene glycol, glycerol, arginine, magnesium sulfate, hydroxypropyl starch and phenylbenzimidazole sulfonic acid were mixed using a homogenizer at room temperature or with heating to 80°C as necessary. Step 3: The mixture obtained in step 2 was added to the mixture obtained in step 1, and the resulting mixture was emulsified using a homogenizer.

[0123]

[0124]

[0125]

[0126] The properties of the cosmetic compositions of the Examples and Comparative Examples were measured by the following methods.

[0127] (Viscosity of cosmetic composition) The 25°C viscosity of the each cosmetic composition was measured using a rotational viscometer (Rheolab QC by Anton Paar GmbH, rotational speed: 100 rpm).

[0128] (Evaluation of coverage effect, lightweight, thin make-up film layer, long-lasting effect and comfortable skin finish (skin finish without sticky texture)) The cosmetic compositions of Examples 1 to 4 and Comparative Examples 5 to 14 were applied onto the facial skin of 10 cosmetic expert evaluators (25 to 55 years of age), and the coverage effect, lightweight, thin make-up film layer, long-lasting effect and comfortable skin finish (skin finish without sticky texture) were evaluated on the following scale.

[0129] (1) Coverage effect A: Excellent (e.g.: complete covering of redness or blemishes). B: Very good (e.g.: no visible redness, but 1 or 2 evaluators out of 10 had slightly visible blemishes). C: Good (e.g.: no visible redness, but 3 to 5 evaluators out of 10 had slightly visible blemishes). D: Poor (e.g.: 1 or 2 evaluators out of 10 had visible redness or blemishes). E: Very poor (e.g.: 3 to 5 evaluators out of 10 had visible redness or blemishes). F: Extremely poor (e.g.: 6 to 10 evaluators out of 10 had visible redness or blemishes).

[0130] (2) Lightweight, thin make-up film layer A: Excellent (e.g.: lack of blocking feel and absolutely no unnatural finish feel). B: Very good (e.g.: slight blocking feel but no unnatural finish feel). C: Good (e.g.: blocking feel but no unnatural finish feel). D: Poor (e.g.: blocking feel and slight unnatural finish feel). E: Very poor (e.g.: blocking feel and unnatural finish feel). F: Extremely poor (e.g.: blocking feel and considerable unnatural finish feel).

[0131] (3) Long-lasting effect A: Excellent (e.g.: no breakup of cosmetic even after 8 hours.) B: Very good (e.g.: no breakup of cosmetic after 4 hours, but breakup of cosmetic experienced by 1 or 2 evaluators out of 10 after 8 hours.) C: Good (e.g.: no breakup of cosmetic after 4 hours, but breakup of cosmetic experienced by 3 to 5 evaluators out of 10 after 8 hours.) D: Poor (e.g.: breakup of cosmetic experienced by 1 or 2 evaluators out of 10 after 4 hours.) E: Very poor (e.g.: breakup of cosmetic experienced by 3 to 5 evaluators out of 10 after 4 hours.) F: Extremely poor (e.g.: breakup of cosmetic experienced by 6 to 10 evaluators out of 10 after 4 hours.)

[0132] (4) Comfortable skin finish without sticky texture A: Excellent (e.g.: very strong fresh sensation, absolutely no stickiness felt.) B: Very good (e.g.: strong fresh sensation, virtually no stickiness felt.) C: Good (e.g.: fresh sensation but slight stickiness felt). D: Poor (e.g.: fresh sensation but stickiness also felt.) E: Very poor (e.g.: no fresh sensation, stickiness felt). F: Extremely poor (e.g.: no fresh sensation, considerable stickiness felt).

[0133] (Evaluation of stability) The water-in-oil emulsion cosmetic compositions of the Examples and Comparative Examples were each placed in a transparent container and the cap was sealed, prior to storing at room temperature (25°C) or 50°C for 1 month. As a control, the water-in-oil emulsion cosmetic composition was also stored for 1 month at room temperature. The outer appearance of each water-in-oil emulsion cosmetic composition after storage was visually observed. The composition was judged to be "f: Not good" if any worsening of the emulsified state or aggregation of powder was observed, or "a: Good" if there was no difference from the control. Worsening of emulsified state: Oil phase and aqueous phase remained separated even when shaken 10 times by hand. Powder aggregation: Heterogeneous dispersion of pigment and uneven color even when shaken 10 times by hand.

[0134] The results are summarized in Tables 4 and 5 below. For all of the evaluations, compositions receiving an evaluation of A to C and "a" in all of tested properties were considered to be acceptable for the purpose of the invention. Compositions receiving an evaluation of D to F or "f" for at least one evaluation were considered to be unacceptable for the purpose of the invention.

[0135]

[0136]

Claims

1. A water-in-oil emulsion cosmetic composition, comprising: (a) a nonionic surfactant having an HLB value of less than 8 and comprising (a1) a polyglycerol fatty acid ester and (a2) a sorbitan fatty acid ester, (b) a copolymer of vinylpyrrolidone and an alpha-olefin, (c) a plant-derived resin, (d) a hydrophobized pigment, and (e) an oil comprising a volatile hydrocarbon oil.

2. The cosmetic composition according to claim 1, wherein component (a1) comprises at least one selected from the group consisting of an ester of hydroxy fatty acid polycondensate and polyglycerol, and a mono- or poly-fatty acid ester of polyglycerol.

3. The cosmetic composition according to claim 1 or 2, wherein component (a2) comprises a mono-, sesqui- or di-fatty acid ester of sorbitan.

4. The cosmetic composition according to any one of claims 1 to 3, wherein component (b) comprises a copolymer of vinylpyrrolidone and an alpha-olefin with 12-32 carbon atoms.

5. The cosmetic composition according to any one of claims 1 to 4, wherein component (c) comprises at least one selected from the group consisting of a candelilla wax extract, a carnauba wax extract, rosinate, hydrogenated rosinate and abietate.

6. The cosmetic composition according to any one of claims 1 to 5, wherein component (d) comprises hydrophobized titanium dioxide and / or hydrophobized iron oxide.

7. The cosmetic composition according to any one of claims 1 to 6, further comprising (f) a UV filter comprising an organic UV filter and / or an inorganic UV filter.

8. The cosmetic composition according to claim 7, wherein the inorganic UV filter comprises titanium dioxide and / or zinc oxide.

9. The cosmetic composition according to any one of claims 1 to 8, further comprising at least one selected from the group consisting of salicylate ester, hydrophobized silica and hydrophobized cellulose.

10. The cosmetic composition according to any one of claims 1 to 9, wherein the content of component (a) is 1.0 to 20 mass%.

11. The cosmetic composition according to any one of claims 1 to 10, wherein the ratio of the content of component (a2) with respect to the content of component (a1) [component (a2) / component (a1)] is 0.05 to 20.

12. The cosmetic composition according to any one of claims 1 to 11, wherein the content of component (b) is 0.50 to 10.0 mass%.

13. The cosmetic composition according to any one of claims 1 to 12, wherein the content of component (c) is 0.50 to 10.0 mass%.

14. The cosmetic composition according to any one of claims 1 to 13, wherein the content of component (d) is 1.0 to 40 mass%.

15. The cosmetic composition according to any one of claims 1 to 14, wherein component (a1) comprises polyglyceryl-6 polyricinoleate and / or polyglycerlyl-3 diisostearate, component (a2) comprises sorbitan sesquioleate, component (b) comprises a copolymer of vinylpyrrolidone and eicosene, component (c) comprises candelilla resin, component (d) comprises hydrophobized titanium dioxide and / or hydrophobized iron oxide, and component (e) comprises a C9-C12 alkane.

16. The cosmetic composition according to any one of claims 1 to 15, wherein the cosmetic composition comprises 1.0 to 20 mass% of component (a), 0.5 to 10 mass% of component (b), 0.5 to 10 mass% of component (c), 1.0 to 40 mass% of component (d) and 1.0 to 30 mass% of component (e), based on the total amount of the composition.

17. The cosmetic composition according to any one of claims 1 to 16, wherein the cosmetic composition is in the form of a foundation.

18. A cosmetic process for caring for and / or making-up keratinic materials, wherein the cosmetic process comprises the application onto keratinic materials, in particular onto skin, of the water-in-oil emulsion cosmetic composition according to any one of claims 1 to 17.

19. The cosmetic process according to claim 18, wherein the water-in-oil emulsion cosmetic composition provides the keratinic materials on which it is applied with one or more effects selected from a high coverage effect, a lightweight, thin make-up film layer, a comfortable skin finish without sticky texture, a long-lasting effect and robust stability.

20. A cosmetic product comprising a support in a non-compressed state, and a cosmetic composition impregnated in the support, wherein the cosmetic composition is the cosmetic composition according to any one of claims 1 to 19.

21. A cosmetic package comprising a container and the cosmetic product according to claim 20, wherein the cosmetic product is placed inside of the container.

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