W / O type emulsion composition

Abstract

To provide a W / O emulsion composition having a good feeling of use and a long-lasting cosmetic effect.SOLUTION: The present invention relates to a W / O emulsion composition containing component (A): lauryl PEG-9 polydimethylsiloxyethyl dimethicone, component (B): PEG / PPG-19 / 19 dimethicone and component (C): a hydrophobic coloring pigment.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a W / O type emulsion composition suitable for cosmetics and the like.

Background Art

[0002] A W / O type emulsion composition (water-in-oil type emulsion composition) has a high occlusion effect because an oily component is present in the continuous phase and has advantages such as high moisturizing property. On the other hand, the W / O type emulsion composition has problems such as poor elongation, usability such as a moist feeling of the skin after application, and a tendency to become sticky after a long time of application.

[0003] In Patent Document 1, attempts have been proposed to improve the usability by a formulation combining specific polymers that form a hydrogel. However, there is a demand for a W / O type emulsion composition having even better usability.

[0004] Compositions containing silicone oil and hydrophobized colored pigments are known (for example, Patent Document 2). However, Patent Document 2 does not describe the improvement of the usability and makeup durability of a W / O type emulsion composition by a combination of specific silicone oil and hydrophobized colored pigments.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] An object of the present invention is to provide a W / O type emulsion composition excellent in usability and makeup durability.

Means for Solving the Problems

[0007] The inventors of the present invention conducted studies to solve the above problems and discovered that a W / O type emulsion composition with excellent feel and makeup longevity can be obtained by combining a specific silicone oil and a hydrophobically treated colored pigment, thus completing the present invention. In other words, the gist of this invention is as follows:

[0008] [1] A W / O type emulsion composition containing the following components (A), (B), and (C). (A) Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone (B)PEG / PPG-19 / 19 Dimethicone (C) Hydrophobized colored pigments [2] The W / O type emulsion composition according to [1], wherein the hydrophobic treatment of component (C) is a silicone treatment. [3] The W / O type emulsion composition according to [1] or [2], wherein the content of component (A) is 0.1% to 10% by mass relative to the total amount of the composition. [4] A W / O type emulsion composition according to any one of [1] to [3], wherein the content of component (B) is 0.05% to 10% by mass relative to the total amount of the composition. [5] A W / O type emulsion composition according to any one of [1] to [4], wherein the content of component (C) is 0.05% to 30% by mass relative to the total amount of the composition. [6] The mass ratio of component (A) to component (B) ((A) / (B)) is between 0.1 and 10 The W / O type emulsion composition described in any of [1] to [5]. [7] A W / O type emulsion composition according to any one of [1] to [6], wherein the mass ratio of the sum of components (A) and (B) to component (C), ((A) + (B)) / (C), is 0.05 to 20. [8] A W / O type emulsion composition for topical use on the skin, as described in any of [1] to [7]. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a W / O type emulsion composition excellent in usability and makeup persistence. In particular, it is possible to provide a W / O type emulsion composition excellent in ease of stretching, moist feeling of the skin after application, and non-sagging over time.

Mode for Carrying Out the Invention

[0010] Hereinafter, the present invention will be described. <W / O type emulsion composition> One aspect of the present invention relates to a W / O type emulsion composition (hereinafter sometimes referred to as "the W / O type emulsion composition of the present invention") containing the following components (A), (B) and (C). (A) Lauryl PEG-9 polydimethylsiloxyethyl dimethicone (B) PEG / PPG-19 / 19 dimethicone (C) Hydrophobically treated colored pigment

[0011] The present inventors have conducted various studies to find a technique for improving the usability and makeup persistence of W / O type emulsion compositions. Among them, the present inventors succeeded in creating a W / O type emulsion composition excellent in usability and makeup persistence by combining lauryl PEG-9 polydimethylsiloxyethyl dimethicone, which is a silicone-branched polyether-modified silicone, and PEG / PPG-19 / 19 dimethicone, which is a poly(oxyethylene·oxypropylene)methyl polysiloxane copolymer, with a hydrophobically treated colored pigment. Based on such findings, the present invention has been completed.

[0012] ≪Lauryl PEG-9 polydimethylsiloxyethyl dimethicone as component (A)≫ In the W / O type emulsion composition of the present invention, as component (A), lauryl PEG-9 polydimethylsiloxyethyl dimethicone is included.

[0013] As the lauryl PEG-9 polydimethylsiloxyethyl dimethicone, commercially available products can be used, and examples include, but are not limited to, "KF-6038" (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0014] In the W / O type emulsified composition of the present invention, the content of component (A) is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.2% by mass or more and 6% by mass or less, still more preferably 0.5% by mass or more and 5% by mass or less, and particularly preferably 1% by mass or more and 4% by mass or less, based on the whole composition, from the viewpoints of the feel of use and makeup persistence of the composition.

[0015] ≪PEG / PPG-19 / 19 dimethicone of component (B)≫ In the W / O type emulsified composition of the present invention, component (B) contains PEG / PPG-19 / 19 dimethicone.

[0016] As the PEG / PPG-19 / 19 dimethicone, commercially available products can be used, and examples include, but are not limited to, "BY11-030" (manufactured by DuPont-Toray Specialty Materials Co., Ltd.).

[0017] In the W / O type emulsified composition of the present invention, the content of component (B) is preferably 0.05% by mass or more and 10% by mass or less, more preferably 0.1% by mass or more and 6% by mass or less, still more preferably 0.3% by mass or more and 5% by mass or less, and particularly preferably 0.5% by mass or more and 4% by mass or less, based on the whole composition, from the viewpoints of the feel of use and makeup persistence of the composition.

[0018] Also, the mass ratio of component (A) to component (B) in the present invention, as the mass ratio (A) / (B) of component (A) to component (B), is preferably 0.1 or more and 10 or less, more preferably 0.1 or more and 8 or less, still more preferably 0.2 or more and 5 or less, and particularly preferably 0.5 or more and 2.5 or less, from the viewpoints of the feel of use and makeup persistence of the composition.

[0019] ≪Hydrophobically treated coloring pigment of component (C)≫ The W / O type emulsion composition of the present invention contains a hydrophobized coloring pigment as component (C). One or more hydrophobized coloring pigments of component (C) can be used in the present invention. As the hydrophobized coloring pigment of component (C), for example, a commercially available coloring pigment that has been hydrophobized by the method shown below can be used.

[0020] The coloring pigments to be hydrophobicized are not particularly limited and can be used as long as they are coloring pigments that can be normally incorporated into cosmetics, etc. Examples include metal oxides and hydroxides such as titanium dioxide, fine-particle titanium dioxide, zinc oxide, fine-particle zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, chromium hydroxide, chromium oxide, sulfides, chromates, silicates such as ultramarine, sulfates, carbonates, ferrocyanides such as Prussian blue, phosphates such as manganese violet, and inorganic pigments such as carbon black; organic pigments such as tar-based dyes; and natural pigments. As component (C), metal oxides and hydroxides are preferred, with titanium dioxide, yellow iron oxide, black iron oxide, and red iron oxide being more preferred. The shape of the coloring pigment is not particularly limited and may be spherical, nearly spherical, rod-shaped, spindle-shaped, petal-shaped, strip-shaped, or irregularly shaped. The particle size (volume average particle size) is not limited, but is preferably in the range of 150 to 600 nm.

[0021] Hydrophobic treatments for these coloring pigments include silicone treatment, fluorine treatment, fatty acid treatment, and N-acyl amino acid treatment. Silicone treatments include methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, and alkylalkoxysilane treatment. Fluorine treatments include perfluoroalkyl phosphate ester treatment and perfluoroalkylalkoxysilane treatment. Fatty acid treatments include stearic acid treatment and myristic acid treatment. N-acyl amino acid treatments include lauroyl lysine treatment, dilauroyl glutamate lysine sodium treatment, stearoyl glutamate disodium treatment, and lauroyl aspartate sodium treatment. For the hydrophobic treatment of component (C), silicone treatment and disodium stearoyl glutamate treatment are preferred, silicone treatment is more preferred, and methylhydrogenpolysiloxane treatment is even more preferred. Hydrophobic treatment can be used in the present invention by using one or more types of treatment in combination.

[0022] The hydrophobic treatment of the colored pigment can be carried out by conventional surface treatment methods, such as dry treatment or wet treatment. For dry treatment, the colored pigment used in the present invention can be mixed and brought into contact with any agitator, pulverizer, mixer, disperser, etc., such as a Henschel mixer, ball mill, jet mill, kneader, planetary mixer, sand mill, attritor, ribbon blender, disper mixer, homo mixer, etc. During this process, energy such as heating, mechanical force, or superheated steam may be applied. Alternatively, after thoroughly mixing and contacting the colored pigment and the hydrophobic treatment agent, the process may be carried out by separately applying energy such as heating, mechanical force, or superheated steam. This may be done. Also, when mixing / contacting the hydrophobic agent with the colored pigment, in order to improve the dispersion efficiency of the hydrophobic agent, the hydrophobic agent may be pre-dissolved or dispersed in an arbitrary amount of water, solvent, or supercritical fluid, and then sprayed onto the colored pigment. As a wet method, the colored pigment and the hydrophobic agent can be dispersed in water, solvent, or supercritical fluid, mixed / contacted, and then the solvent can be evaporated, and optionally, energy such as heating, mechanical force, or superheated steam can be applied to carry out the treatment. The amount of hydrophobic treatment (coating) is preferably 0.1 to 20% by mass, more preferably 0.5 to 15% by mass, and even more preferably 1 to 10% by mass, relative to the mass of the coloring pigment.

[0023] In the present invention, the content of the hydrophobized colored pigment in component (C) is preferably 0.05% to 30% by mass, more preferably 0.1% to 20% by mass, even more preferably 0.5% to 15% by mass, and particularly preferably 1% to 10% by mass, relative to the total composition, from the viewpoint of the feel of the composition and the durability of the cosmetic. When two or more types of component (C) are used in combination, the above content refers to the total amount of the two or more types. The blending ratio of the two or more types can be appropriately adjusted according to the feel of the composition and the durability of the cosmetic. The content of the hydrophobized colored pigment in component (C) refers to the mass including the hydrophobized agent.

[0024] Furthermore, the mass ratio of the total of components (A) and (B) to component (C) in the present invention, ((A)+(B)) / (C), is preferably 0.05 to 20, more preferably 0.1 to 10, more preferably 0.3 to 5, and even more preferably 0.5 to 2.5, from the viewpoint of the feel of the composition and the longevity of the cosmetic product.

[0025] <<Other ingredients>> Furthermore, the W / O type emulsifying composition of the present invention may contain other optional components, as long as they do not impair its effects. The optional ingredients are not particularly limited and can be used as long as they are ingredients that can be commonly incorporated into cosmetics, etc. One or more optional ingredients may be used in combination in this invention.

[0026] Such ingredients include, for example, oils and waxes such as macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, hydrogenated coconut oil, hydrogenated oil, Japanese wax, hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, privet wax, lanolin, reduced lanolin, hard lanolin, jojoba wax, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, Hydrocarbons such as petrolatum and microcrystalline wax; higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, and undecylenic acid; higher alcohols such as cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, and cetostearyl alcohol; isononyl isononanoate, cetyl isooctanoate, isopropyl myristate, Hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebatate, cetyl lactate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentane erythritol tetra-2-ethylhexanoate Synthetic ester oils such as dimethylpolysiloxane, methylphenylpolysiloxane, and diphenylpolysiloxane; cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexanesiloxane; silicone oils and other oils such as amino-modified polysiloxanes, polyether-modified polysiloxanes other than essential components, alkyl-modified polysiloxanes, fluorine-modified polysiloxanes, and other modified polysiloxanes;

[0027] Anionic surfactants such as fatty acid soaps (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, and alkyl sulfate triethanolamine ether; cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, and laurylamine oxide; imidazoline amphoteric surfactants (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine-based surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), and ash Amphoteric surfactants such as methyl taurine; sorbitan fatty acid esters (sorbitan monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (glyceryl monostearate, etc.), propylene glycol fatty acid esters (propylene glycol monostearate, etc.), hydrogenated castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbitan fatty acid esters (POE-sorbitan (e.g., POE monolaurate), POE glycerin fatty acid esters (e.g., POE-glycerin monoisostearate), POE fatty acid esters (e.g., polyethylene glycol monooleate, POE distearate), POE alkyl ethers (e.g., POE 2-octyldodecyl ether), POE alkylphenyl ethers (e.g., POE nonylphenyl ether), Pluronic® type, POE·POP alkyl ethers (e.g., POE·POP 2-decyltetradecyl ether), Tetronic, POE castor oil... Nonionic surfactants such as hydrogenated castor oil derivatives (POE castor oil, POE hydrogenated castor oil, etc.), sucrose fatty acid esters, and alkyl glucosides; polyethylene glycol, glycerin, 1,3-butylene glycol (1,3-BG), erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexanediol, 1,2-hexanediol, and 1,2-octanediol;

[0028] Powders such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, anhydrous silicic acid (silica), aluminum oxide, barium sulfate, etc., which may have a surface treatment; inorganic pigments other than essential components, which may have a surface treatment, such as red iron oxide, red iron oxide, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, Prussian blue, titanium dioxide, zinc oxide; pearl agents such as titanium mica, fish scale foil, bismuth oxychloride, etc., which may have a surface treatment; lake Organic dyes such as Red 202, Red 228, Red 226, Yellow 4, Blue 404, Yellow 5, Red 505, Red 230, Red 223, Orange 201, Red 213, Yellow 204, Yellow 203, Blue 1, Green 201, Violet 201, Red 204, etc., which may be fermented; organic powders such as polyethylene powder, polymethyl methacrylate, methyl methacrylate crosspolymer, nylon powder, organopolysiloxane elastomer;

[0029] Para-aminobenzoic acid-based UV absorbers; anthranilic acid-based UV absorbers; salicylic acid-based UV absorbers; cinnamic acid-based UV absorbers; benzophenone-based UV absorbers; sugar-based UV absorbers; 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, 4-meth UV absorbers such as xy-4'-t-butyldibenzoylmethane;

[0030] Lower alcohols such as ethanol and isopropanol; vitamin A or its derivatives, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or its derivatives, vitamin B 12 Vitamin B 15 Vitamin B compounds, or their derivatives; vitamin E compounds such as α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate, vitamin D compounds, vitamin H, pantothenic acid, pantethine, pyrroloquinoline quinone, and other vitamins; activators such as royal jelly, photosensitizers, and cholesterol derivatives; blood circulation promoters such as nonylic acid vanenylamide, capsaicin, gingerol, and tannic acid; anti-seborrheic agents such as sulfur and thianthol; collagen, hyaluronic acid, and Examples include water-soluble polymers such as salts; solvents such as water; film-forming agents such as trimethylsiloxysilicate; and fragrances.

[0031] In addition, the W / O type emulsion composition of the present invention may optionally contain various active ingredients, humectants, pH adjusters, preservatives, antibacterial agents, antioxidants, antioxidant aids, and the like.

[0032] Active ingredients include skin whitening ingredients, wrinkle-improving ingredients, anti-inflammatory ingredients, and plant and animal extracts.

[0033] As for whitening ingredients, there are no particular limitations as long as they are commonly used in cosmetics. For example, 4-n-butylresorcinol, ascorbic acid glucoside, 3-O-ethyl ascorbic acid, tranexamic acid, arbutin, ellagic acid, kojic acid, linoleic acid, nicotinamide, 5,5'-dipropylbiphenyl-2,2'-diol, 5'-adenylyl nitrate Examples include thorium, cetyl tranexamate, potassium 4-methoxysalicylate, hydroquinone, and pantothenic acid.

[0034] As for wrinkle-improving ingredients, there are no particular limitations as long as they are commonly used in cosmetics. Examples include sodium trifluoride isopropyl oxopropylaminocarbonylpyrrolidinecarbonylmethylpropylaminocarbonylbenzoylaminoacetate, nicotinamide, vitamin A or its derivatives (retinol, retinal, retinoic acid, tretinoin, isotretinoin, retinoic acid tocopherol, retinyl palmitate, retinyl acetate, etc.), benzyl ursolate, ursolic acid phosphate, benzyl betulinate, and benzyl acid phosphate.

[0035] Examples of anti-inflammatory components include clarinon, glabridin, glycyrrhizic acid, glycyrrhetinic acid, and pantothenyl alcohol, with glycyrrhizic acid and its salts being preferred, alkyl glycyrrhetinate and its salts, and glycyrrhetinic acid and its salts.

[0036] There are no particular limitations on the use of plant and animal-derived extracts, as long as they are commonly used in pharmaceuticals, cosmetics, food products, etc. For example, Akebia extract, Thujopsis dolabrata extract, Asparagus extract, Avocado extract, Hydrangea serrata extract, Almond extract, Arnica extract, Aloe extract, Aronia extract, Apricot extract, Ginkgo extract, Indian kino extract, Fennel extract, Aralia cordata extract, Rosehip extract, Eleutherococcus senticosus extract, Enmeisou extract, Scutellaria baicalensis extract, Phellodendron amurense extract, Coptis japonica extract, Panax ginseng extract, Hypericum perforatum extract, Lamium album extract, Orange extract, Arctium moniliforme extract, Pueraria lobata extract, Chamomile extract, Carrot extract, Artemisia capillaris extract, Licorice extract, Kiwi extract, Cucumber extract, Guava extract, Sophora flavescens extract, Gardenia extract, Sasa veitchii extract, Sophora flavescens extract, Walnut extract, Grapefruit extract, Black rice extract, Chlorella extract, Mulberry extract, Ligusticum sieboldii extract, Alpinia speciosa extract, Gentian extract, Geranium thunbergii extract, Black tea extract Su, burdock extract, rice extract, fermented rice extract, fermented rice bran extract, rice germ oil, lingonberry extract, salvia extract, soapwort extract, bamboo extract, hawthorn extract, sunflower extract, sansho pepper extract, shiitake mushroom extract, rehmannia extract, lithospermum extract, perilla extract, linden extract, meadowsweet extract, peony extract, ginger extract, calamus root extract, birch extract, horsetail extract, stevia extract, stevia extract Fermented product, Hedera helix extract, Hawthorn extract, Elderflower extract, Yarrow extract, Peppermint extract, Sage extract, Mallow extract, Cnidium officinale extract, Swertia japonica extract, Morus alba bark extract, Rhubarb extract, Soybean extract, Jujube extract, Thyme extract, Dandelion extract, Tea extract, Clove extract, Citrus unshiu peel extract, Sweet tea extract, Capsicum extract, Angelica acutiloba extract, Calendula extract, Sea urchin extract, spruce extract, Houttuynia cordata extract, tomato extract, natto extract, carrot extract, garlic extract, wild rose extract, hibiscus extract, Ophiopogon japonicus extract, lotus extract, parsley extract, birch extract, witch hazel extract, Isodon japonicus extract, cypress extract, loquat extract, coltsfoot extract, butterbur extract, Poria cocos extract, butcher's broom extract, grape extract, grape seed extract, loofah extract, safflower extract, peppermint extract, linden extract, peony extract, hop extract, pine extract, marjoram Extracts such as horse chestnut extract, skunk cabbage extract, soapberry extract, lemon balm extract, seaweed extract, peach extract, cornflower extract, eucalyptus extract, saxifrage extract, yuzu extract, lily extract, coix seed extract, mugwort extract, lavender extract, green tea extract, apple extract, rooibos tea extract, reishi mushroom extract, lettuce extract, lemon extract, forsythia extract, astragalus extract, rose extract, rosemary extract, Roman chamomile extract, royal jelly extract, and burnet extract are among the preferred extracts.

[0037] Examples of humectants include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, carotenoid acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO)PO adduct, Rosa rugosa extract, Achillea millefolium extract, and Melilotus extract.

[0038] Examples of pH adjusting agents include buffering agents such as lactate-sodium lactate, citrate-sodium citrate, and succinate-sodium succinate.

[0039] Examples of preservatives include methylparaben, ethylparaben, butylparaben, and phenoxyethanol.

[0040] As antibacterial agents, synthetic agents such as 1,3-butylene glycol and parahydroxybenzoic acid esters are preferred, as are natural antibacterial substances such as caprylyl glycol, glyceryl caprylate, ethylhexylglycerin, and caprylhydroxamic acid.

[0041] Examples of antioxidants include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, and gallic acid esters. Examples of antioxidant auxiliary agents include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphorate, phytic acid, and ethylenediaminetetraacetic acid.

[0042] These optional components may be added at any step in the present invention, or before or after any step.

[0043] The method for producing the W / O type emulsion composition of the present invention can be carried out based on conventional emulsification methods, except that it has the above-mentioned essential components. For example, the oil phase component is heated and dissolved, the powder component is added and dispersed, the heated and dissolved aqueous phase component is added to the oil phase, and the mixture is emulsified while stirring to obtain the W / O type emulsion composition.

[0044] <Topical skin preparations> The W / O type emulsion composition of the present invention can be used in forms such as topical skin preparations, pharmaceuticals, cosmetics including quasi-drugs, etc. Cosmetics are particularly preferred. The dosage form is not particularly limited as long as it is a W / O type emulsion dosage form, and examples include liquid, emulsion, paste, cream, gel, etc., with liquid, emulsion, etc. being preferred.

[0045] The type of cosmetic composition of the present invention is not particularly limited and can be broadly used in known cosmetic compositions that utilize a W / O type emulsifier. Specific examples of cosmetic compositions include makeup cosmetics such as makeup base, foundation, eyeshadow, eyeliner, and lipstick, and sunscreen cosmetics such as sunscreen lotion and sunscreen cream.

[0046] Aside from using the W / O type emulsion composition of the present invention, the manufacture of cosmetic compositions including topical skin preparations, pharmaceuticals, and quasi-drugs can be carried out using conventionally known manufacturing methods. [Examples]

[0047] The present invention will be specifically described below with reference to examples, but these are merely illustrative examples of the present invention, and the scope of the present invention is not limited thereto.

[0048] W / O type emulsion compositions for the examples and comparative examples were prepared and evaluated using the formulations shown in Table 1. Specifically, the following procedure was followed: The oil phase components were heated to 70°C and dissolved, and the powder components were added and dispersed. The aqueous phase components, which were also heated and dissolved at 70°C, were added to the oil phase and emulsified while stirring with a homomixer to obtain the desired W / O type emulsion composition.

[0049] For the W / O type emulsion compositions of the examples and comparative examples, each prepared sample was used by a professional evaluator, and usage tests were conducted. The results are shown in Table 1.

[0050] The criteria for evaluation are as follows: 1) Ease of stretching Ten expert evaluators applied W / O type cosmetics to their skin and evaluated their spreadability during application on a five-point scale. The evaluation results in the table are shown as the total score from the ten expert evaluators. 5; It spreads very well on the skin. 4. It spreads easily on the skin. 3; It spreads fairly well on the skin. 2; It doesn't spread very well on the skin. 1. It doesn't spread well on the skin.

[0051] 2) Moisturizing effect on the skin after application Ten expert evaluators applied 0.16g of each W / O type emulsified cosmetic to their faces using a sponge and sensory-evaluated the moisturizing effect on their faces immediately after application on a five-point scale. The results are shown as the total scores from the ten evaluators. 5; It has a very moisturizing feel. 4; It has a moist feel. 3; It doesn't feel very moisturizing. 2; It has almost no moisturizing effect. 1; It has absolutely no moisturizing properties.

[0052] 3) No distortion over time Ten expert evaluators applied 0.16g of each W / O type emulsified cosmetic to their faces using a sponge, and then performed a sensory evaluation of skin creasing after 4 hours using the following four-point scale. The total scores from the ten evaluators are shown below. 4; There is absolutely no wrinkles or creases. 3; There is almost no wrinkles. 2; There is some slight wrinkling. 1; There is clearly some distortion.

[0053] [Table 1]

[0054] The W / O type emulsion composition of the example containing components (A), (B), and (C) exhibits ease of spreadability, a moist feeling on the skin after application, and a lack of creasing over time, resulting in a pleasant feel and makeup application. It was found to have excellent durability. On the other hand, Comparative Example 1, which did not contain component (A); Comparative Example 2, which did not contain component (B); Comparative Example 3, which contained silicone-branched polyglycerin-modified silicone instead of component (A); Comparative Example 4, which contained polyoxyethylene methylpolysiloxane copolymer instead of component (B); and Comparative Example 5, which contained an unhydrophobized colored pigment instead of component (C), had insufficient feel and makeup longevity. Furthermore, it was found that a silicone-treated colored pigment is more preferable as component (C), a mass ratio of component (A) / (B) of 0.5 to 2.5 is more preferable, and a mass ratio of component ((A)+(B)) / (C) of 0.5 to 2.5 is more preferable. [Industrial applicability]

[0055] This invention can be applied to topical skin preparations, pharmaceuticals, cosmetics including quasi-drugs, and the like.

Claims

1. It contains the following ingredients (A), (B), and (C): The mass ratio of component (A) to component (B) ((A) / (B)) is between 0.5 and 2.

5. A W / O type emulsion composition in which the content of component (C) is 1% to 10% by mass relative to the total amount of the composition. (A) Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone (B) PEG / PPG-19 / 19 Dimethicone (C) Hydrophobized colored pigments

2. The W / O type emulsion composition according to claim 1, wherein the hydrophobic treatment of component (C) is a silicone treatment.

3. The W / O type emulsion composition according to claim 1 or 2, wherein the content of component (A) is 0.1% by mass to 10% by mass based on the total amount of the composition.

4. A W / O type emulsion composition according to any one of claims 1 to 3, wherein the content of component (B) is 0.05% by mass to 10% by mass based on the total amount of the composition.

5. A W / O type emulsion composition according to any one of claims 1 to 4, wherein the mass ratio of the total of components (A) and (B) to component (C), ((A) + (B)) / (C), is 0.05 to 20.

6. A W / O type emulsion composition according to any one of claims 1 to 5, which is a topical skin preparation.

Images