Water-in-oil emulsion cosmetic

Abstract

To provide a water-in-oil type emulsion cosmetic having a light use feeling without stickiness and improves a makeup sustaining effect and temporal stability.SOLUTION: There is provided a water-in-oil type emulsion cosmetic which comprises (A) 0.3 to 3.5 mass% of one or two or more emulsifiers selected from the group consisting of diisostearoyl polyglyceryl-3 dimer dilinoleate, polyglyceryl-4 diisostearate / polyhydroxystearate / sebacate and tri(polyglyceryl-3 / lauryl) hydrogenated trilinoleate, (B) 8 to 40 mass% of a liquid hydrocarbon oil, (C) 0.15 to 2.5 mass% of an organic modified clay mineral and (D) 0.4 to 40 mass% of a hydrophobically-treated metal oxide.SELECTED DRAWING: None

Description

Technical Field

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

Background Art

[0002] Water-in-oil emulsion cosmetics are excellent in water resistance and are used as sunscreen cosmetics, makeup cosmetics, makeup bases, etc. In particular, water-in-oil cosmetics containing cyclic silicone have been favored for many years because of their long-lasting makeup effect and light feeling in use. However, due to the increasing global environmental response, there is a demand for SDGs-compliant cosmetics that do not contain silicone raw materials that are difficult to decompose. For example, on the homepage of the Silicone Industry Association, it is described that "in June 2018, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane were added to the candidate substance list of SVHC due to PBT (Persistence, Bioaccumulation, Toxicity), proposed as substances equivalent to approved substances, and currently, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane are being publicly commented on and examined in accordance with the procedure for determining SVHC defined by the REACH Regulation (Registration, Evaluation, Authorization and Restriction of Chemicals)".

[0003] Therefore, Patent Document 1 discloses a W / O type composition comprising (a) at least one oil, (b) at least one monoalkyl triacyl titanate treated pigment, (c) ethanol, and (d) water, wherein the amount of (c) ethanol is 6.0% by mass or more, preferably 6.4% by mass or more, and more preferably 6.8% by mass or more, relative to the total mass of the composition, and the composition optionally contains at least one volatile cyclic silicone in an amount of 1% by mass or less relative to the total mass of the composition. Furthermore, Patent Document 2 discloses a composition in the form of a water-in-oil emulsion comprising an aqueous phase dispersed in an oil phase, and containing a. a fatty acid ester of at least one polyol, and b. at least one hydrophobic modified polysaccharide selected from inulin, cellulose and its derivatives, starch and agar, and mixtures thereof, characterized in that it does not contain silicone. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-50186 [Patent Document 2] Special Publication No. 2011-506556 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] However, the technology described in Patent Document 1 had a problem in that, depending on the emulsifier used, oil separation occurred over time, resulting in poor stability and poor makeup longevity when used in makeup cosmetics or sunscreens. Furthermore, when volatile cyclic silicone was incorporated in an amount of 1% by mass or less relative to the total mass of the composition, the use of silicone led to environmental damage.

[0006] Furthermore, the technology described in Patent Document 2 uses inulin, cellulose and its derivatives, starch, and agar, resulting in poor makeup longevity, such as makeup smudging due to sweat, and improvement in this regard was desired.

[0007] Therefore, the objective of the present invention is to solve the environmental damage problems associated with conventional water-in-oil emulsion cosmetics, to provide a water-in-oil emulsion cosmetic that has a light, non-sticky feel without containing silicone, and has improved makeup retention and long-term stability. [Means for solving the problem]

[0008] The inventors of the present invention conducted diligent studies to solve the aforementioned problems and found that the objectives could be achieved by combining a specific emulsifier, a liquid hydrocarbon oil, an organically modified clay mineral, and a hydrophobized metal oxide, thereby completing the present invention.

[0009] That is, the water-in-oil emulsion cosmetic of the present invention comprises (A) 0.3 to 3.5% by mass of one or more emulsifiers selected from the group consisting of polyglyceryl-3 diisostearate dimer dilinoleate, polyglyceryl-4 (diisostearate / polyhydroxystearate / sebacate), and tri(polyglyceryl-3 / lauryl) hydrogenated trilinoleate, (B) Liquid hydrocarbon oil 8-40% by mass, (C) Organically modified clay minerals 0.15~2.5% by mass, (D) Hydrophobized metal oxide 0.4~40 mass%, It is characterized by containing the following:

[0010] Furthermore, the water-in-oil emulsion cosmetic composition of the present invention preferably contains an alkane with a molecular weight of 100 to 270 as the (B) liquid hydrocarbon oil, and the content of the alkane with a molecular weight of 100 to 270 is preferably 50% by mass or more relative to the total amount of the (B) liquid hydrocarbon oil.

[0011] Furthermore, the water-in-oil emulsion cosmetic composition of the present invention preferably contains 0.3 to 2.0% by mass of (E) a sorbitan-based surfactant and / or polyhydroxystearic acid. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a water-in-oil emulsion cosmetic that has a light, non-sticky feel, and offers improved makeup longevity and stability over time. [Modes for carrying out the invention]

[0013] The water-in-oil emulsion cosmetic composition of the present invention will be described in detail below. The present invention provides an oil-in-water emulsion cosmetic composition characterized by containing (A) 0.3 to 3.5% by mass of one or more emulsifiers selected from the group consisting of polyglyceryl-3 diisostearate dimer dilinoleate, polyglyceryl-4 (diisostearate / polyhydroxystearate / sebacate), and tri(polyglyceryl-3 / lauryl) hydrogenated trilinoleate; (B) 8 to 40% by mass of liquid hydrocarbon oil; (C) 0.15 to 2.5% by mass of organically modified clay mineral; and (D) 0.4 to 40% by mass of hydrophobized metal oxide. This makes it possible to provide an oil-in-water emulsion cosmetic composition with improved makeup retention and long-term stability. Furthermore, since silicone does not need to be used, environmental damage can be prevented, and an environmentally friendly makeup / sunscreen cosmetic composition can be provided that has good makeup retention, is sweat-resistant, and has improved long-term stability. Furthermore, the present invention makes it possible to formulate a water-in-oil emulsion cosmetic that is stable and has a light feel without containing silicone oil. While it is preferable that the water-in-oil emulsion cosmetic of the present invention does not contain any silicone oil, considering environmental impact, it may contain a small amount of silicone oil if it has little to no impact on the environment and does not negatively affect the feel of the product.

[0014] In the present invention, the content (amount) of one or more emulsifiers selected from the group consisting of (A) polyglyceryl-3 diisostearate dimer dilinoleate, (diisostearate / polyhydroxystearate / sebacate) polyglyceryl-4 and hydrogenated trilinoleate tri(polyglyceryl-3 / lauryl) is 0.3 to 3.5% by mass, and more preferably 0.8 to 2.5% by mass. If the content of one or more emulsifiers selected from the group consisting of polyglyceryl-3 diisostearate dimer dilinoleate, (diisostearate / polyhydroxystearate / sebacate) polyglyceryl-4 and hydrogenated trilinoleate tri(polyglyceryl-3 / lauryl) is less than 0.3% by mass, the emulsion stability is poor, and if it is more than 3.5% by mass, the oily stickiness becomes strong.

[0015] Furthermore, in the present invention, the polyglyceryl-3 diisostearate dimer dilinoleate can be used in ordinary cosmetics and is not particularly limited as long as the effects of the present invention are obtained, but examples include ISOLAN PDI (registered trademark) manufactured by EVONIK. Furthermore, the polyglyceryl-4 (diisostearate / polyhydroxystearate / sebacate) can be used in ordinary cosmetics and is not particularly limited as long as the effects of the present invention are obtained, but examples include ISOLAN GPS (registered trademark) manufactured by EVONIK. Moreover, the tri(polyglyceryl-3 / lauryl) hydrogenated trilinoleate can be used in ordinary cosmetics and is not particularly limited as long as the effects of the present invention are obtained, but examples include cisrol PGTL (trade name) manufactured by Croda Japan Co., Ltd.

[0016] Furthermore, in the present invention, the content of (B) liquid hydrocarbon oil is 8 to 40% by mass, more preferably 16 to 36% by mass, and more preferably 22 to 32% by mass. By setting the content of (B) liquid hydrocarbon oil within the above range, a cosmetic composition with less stickiness and excellent stability over time can be provided. On the other hand, if it is less than 8% by mass, the emulsification stability is poor, and if it is more than 40% by mass, an oily stickiness occurs.

[0017] Furthermore, in the present invention, the (B) liquid hydrocarbon oil is a hydrocarbon oil that is liquid at room temperature (20°C), can be used in ordinary cosmetics, and is not particularly limited as long as the effects of the present invention are obtained. Examples include liquid paraffin, squalane, polybutene, isoparaffin, α-olefin oligomer, etc. However, considering the impact on the environment, olefins produced from plants by fermentation or the like are preferred. Examples include JEECHEM NDA-LC (trade name) from JEEN International Corporation, PARAFOL 12-97 (trade name) from Sasol Ltd., and EMOSMART L15 (trade name) from SEPPIC SA.

[0018] Furthermore, in the present invention, it is preferable that the (B) liquid hydrocarbon oil contains alkanes with a molecular weight of 100 to 270, and more preferably contains alkanes with a molecular weight of 120 to 220. Moreover, it is preferable that the content of the alkanes with a molecular weight of 100 to 270 is 50% by mass or more of the total amount of the (B) liquid hydrocarbon oil. If the content of the alkanes with a molecular weight of 100 to 270 in the total hydrocarbon oil is 50% by mass or more, the longevity of the makeup over time will be improved, and if it is less than 50% by mass, the longevity of the makeup may be poor.

[0019] Furthermore, in the present invention, the content of the (C) organic modified clay mineral is preferably 0.15 to 2.5% by mass, more preferably 0.2 to 1.8% by mass, and more preferably 0.3 to 1.2% by mass. By setting the content of the (C) organic modified clay mineral within the above range, stability can be improved, while if it is less than 0.1% by mass, the emulsification stability deteriorates, and if it is more than 2.5% by mass, stickiness occurs.

[0020] In the present invention, such an organically modified clay mineral is a type of colloidal hydrous aluminum silicate having a layered structure, which can be used in ordinary cosmetics and is not particularly limited as long as the effects of the present invention can be obtained. Examples thereof include quaternium-18 bentonite, distearyldimonium hectorite, dimethylalkylammonium hectorite, benzyldimethylstearylammonium hectorite, and aluminum magnesium silicate treated with distearyldimethylammonium chloride. These may be used alone or in combination of two or more. Among them, dimethyldistearylammonium hectorite obtained by organically modifying hectorite and quaternium-18 bentonite obtained by organically modifying bentonite are preferable, and BENTONE 38VCG (manufactured by Elementis Japan Co., Ltd.), Esven W (registered trademark, manufactured by Nippon Organic Clay Co., Ltd.), etc. can be used.

[0021] Furthermore, in the present invention, the content of the (D) hydrophobically treated metal oxide is 0.4 to 40% by mass, preferably 1.0 to 33.0% by mass, and more preferably 3.0 to 27.0% by mass. By setting the content of the (D) hydrophobically treated metal oxide within the above range, it is possible to expect "maintaining a high makeup effect" that conceals the skin and makes it look beautiful. On the other hand, if it is less than 0.4% by mass, the makeup effect itself is almost lost, and if it is more than 40% by mass, the emulsion stability deteriorates.

[0022] Furthermore, in the present invention, the hydrophobizing coating material for hydrophobizing the metal oxide of the (D) hydrophobically treated metal oxide is not particularly limited as long as it is a hydrophobizing coating material that can be used in ordinary cosmetics. For example, it is preferably any one of fatty acids, metal salts of fatty acids, octyltriethoxysilane, fatty acid esters of glutamic acid, fatty acid esters of lysine, fatty acid esters of dextrin, and isopropyl titanate triisostearate. More preferably, it does not contain a metal oxide treated with dimethicone or hydrogenated dimethicone. If the hydrophobizing coating material of the (D) hydrophobically treated metal oxide is the above-mentioned one, it can be expected to have excellent dispersion stability of the effect powder.

[0023] In the present invention, the metal oxide of the (D) hydrophobically treated metal oxide is not particularly limited as long as it can be used in ordinary cosmetics and the effects of the present invention can be obtained. Examples thereof include metal oxides such as titanium oxide (including fine particle titanium oxide), zinc oxide (including fine particle zinc oxide), zirconium oxide, iron oxide, and aluminum oxide. Among them, titanium oxide is preferable, and it is preferable to contain 1 to 10% by mass, more preferably 1 to 5% by mass of titanium oxide. By containing such titanium oxide, the makeup retention can be further improved. Makeup retention means that the makeup effect (concealment effect) is maintained even after several hours.

[0024] In the present invention, it is preferable to further contain 0.3 to 2.0% by mass, more preferably 0.6 to 1.5% by mass of (E) sorbitan-based surfactant and / or polyhydroxystearic acid. If the content of the (E) sorbitan-based surfactant and / or polyhydroxystearic acid exceeds 2% by mass, there may be a feeling of stickiness, so it is preferably 2% by mass or less. If it is less than 0.3% by mass, there may be an impact on the stability over time. Further, by using the (A) polyglyceryl-3 diisostearate dimer dilinoleate and the (E) sorbitan-based surfactant and / or polyhydroxystearic acid in combination, the dispersion stability of powders such as the (D) hydrophobically treated metal oxide is improved, and the effect of suppressing the aggregation of the powders over time is improved.

[0025] The sorbitan-based surfactant can be used in ordinary cosmetics and is not particularly limited as long as the effects of the present invention are obtained. Examples include sorbitan sesquiisostearate, sorbitan oleate, sorbitan isostearate, and sorbitan sesquioleate. Commercially available products include NIKKOL SI-15RV (trade name) manufactured by Nikko Chemicals Co., Ltd. and Cosmoll 182V (trade name) manufactured by Nisshin Oillio Group Ltd. as sorbitan sesquiisostearate, NIKKOL SO-10V (trade name) manufactured by Nikko Chemicals Co., Ltd. as sorbitan oleate, and Leodol AO-15 (trade name) manufactured by Kao Corporation as sorbitan sesquioleate. Furthermore, the polyhydroxystearic acid can be used in ordinary cosmetics and is not particularly limited as long as the effects of the present invention are obtained. For example, a commercially available product is Saracos HS-6C (trade name) manufactured by Nisshin Oillio Group Ltd.

[0026] Furthermore, in the present invention, oily components commonly used in cosmetics can be appropriately incorporated as needed, within a range that does not impair the effects of the present invention. For example, regardless of their origin, such as animal oils, vegetable oils, or synthetic oils, and their properties, such as solid oils, semi-solid oils, liquid oils, or volatile oils, oils and fats, waxes, hydrocarbons, ester oils, fatty acids, higher alcohols, silicone oils, and fluorinated oils can be used.Specifically, for example, oils and fats such as hydrogenated oil, Japanese wax, cocoa butter, hydrogenated castor oil, olive oil, castor oil, macadamia nut oil, evening primrose oil, etc., waxes such as beeswax, lanolin, gay wax, candelilla wax, carnauba wax, privet wax, jojoba wax, jojoba oil, liquid lanolin, etc., hydrocarbons such as paraffin wax, ceresin, microcrystalline wax, polyethylene wax, liquid paraffin, squalane, polybutene, heavy liquid isoparaffin (hydrogenated polybutene), hydrogenated polyisobutene, etc., cetyl palmitate, isopropyl myristate, palmitate Isopropyl benzoate, cetyl 2-ethylhexanoate, octyldodecyl myristate, octyl stearate, octyl palmitate, isononyl isononanoate, diisopropyl adipate, di-2-ethylhexyl sebacate, neopentyl glycol dicaprate, glyceryl trimyristate, glyceryl tri-2-ethylhexanoate, glyceryl triisostearate, caprylic / capric triglyceride, glyceryl behenate / eicosanedioate, diglyceryl diisostearate, diglyceryl triisostearate, tetra-2-ethylhexanoate Pentaerythritol trimethylhexanoate, pentaerythritol dioctanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, diisostearyl malate, dicaprylyl carbonate, alkyl benzoate (C12-C15) ester oils, higher fatty acids such as stearic acid, palmitic acid, myristic acid, 12-hydroxystearic acid, behenic acid, isostearic acid, and oleic acid, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, behenyl alcohol, isostearyl alcohol, oleic acid It can contain higher alcohols such as yl alcohols and octyldodecanol, linear polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methyl trimethicone, heptamethylethyltrisiloxane, octamethyltrisiloxane, and decamethyltetrasiloxane, silicone oils such as cyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, fluorinated oils such as perfluoropolyethers, perfluorodecalin, and perfluorooctane, and natural vitamin E.The water-in-oil emulsion cosmetic composition of the present invention may use one or more of these oily components as needed. However, it is more preferable that the present invention does not contain silicone oil or polyether-modified silicone.

[0027] Furthermore, the water-in-oil emulsion cosmetic composition of the present invention may be further appropriately blended with powders commonly used in cosmetics, as needed, within a range that does not impair the effects of the present invention. The powders are not particularly limited in terms of shape, particle structure, etc., such as plate-like, spindle-like, needle-like, fibrous, and spherical shapes, and particle size, etc., as long as they can be used in ordinary cosmetics. Examples include inorganic powders, organic powders, pigment powders, and composite powders. Such powders include talc, kaolin, mica such as muscovite, phlogopite, red mica, biotite, lithium mica, synthetic mica, and sericite; anhydrous silicic acid, magnesium silicate, aluminum silicate, barium silicate, calcium silicate, bentonite, sericite, bismuth oxychloride, barium sulfate, boron nitride, light calcium carbonate, heavy calcium carbonate, yellow iron oxide, red iron oxide, black iron oxide, ultramarine, conch, cobalt oxide, chromium oxide, chromium hydroxide, carbon black, calamine, and other inorganic powders; methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, vinyl acetate, vinyl propionate, vinyl lauryl acid, vinyl stearate, styrene, Examples of materials include acrylic polymers having vinyltoluene, (meth)acrylamide, (meth)acrylic acid, itaconic acid, maleic acid, etc. as constituent monomers, silicone resins such as methylsiloxane network polymers and cross-linked silicone / network silicone block copolymers, organic powders such as polyethylene, cellulose, magnesium stearate, zinc stearate, N-acyllysine, and nylon, pigment powders such as carotenoid pigments, flavonoid pigments, flavin pigments, quinone pigments, porphyrin pigments, curcumin, organic tar pigments, and organic lake pigments, and composite powders such as barium sulfate-coated titanium mica, titanium dioxide-containing silicon dioxide, and zinc oxide-containing silicon dioxide. The water-in-oil emulsion cosmetic of the present invention can use one or more of these powders as desired. In particular, it is preferable to include spherical powders, as including spherical powders can further improve the non-stickiness.

[0028] Furthermore, the powder may be surface-treated. Such surface treatments are not limited to those commonly used for cosmetic powders, but examples include N-stearoyl-L-glutamate disodium aluminum hydroxide treatment, palmitoyl proline, palmitoyl sarcosinate sodium magnesium palmitoyl glutamate palmitic acid treatment, din fatty acid ester, dextrin fatty acid ester, isopropyl titanium triisostearate, isopropyl titanium triisostearate, isostearyl sebacate disodium stearoyl glutamate aluminum hydroxide treatment, aluminum dimyristate treatment, hydrogenated lecithin trimyristate aluminum hydroxide treatment, and sodium alginate treatment. In particular, it is preferable to hydrophobize the powder, and more preferably to avoid metal oxides treated with dimethicone or hydrogen methicone.

[0029] In addition to the components mentioned above, the water-in-oil emulsion cosmetic composition of the present invention may contain other components commonly used in cosmetics, as needed, within a range that does not impair the effects of the present invention. Examples of such optional components include UV absorbers, polyhydric alcohols, humectants, thickeners, dyes, lower alcohols, organic acids, organic amines, metal ion chelating agents, pH adjusters, antioxidants, preservatives, fragrances, and water. In particular, it is preferable to include plant essential oils such as orange oil and lavender oil for masking purposes. However, in the present invention, the inclusion of lower alcohols, especially ethanol, is not necessarily limited, but it is preferable not to include them as they affect emulsion stability.

[0030] In the present invention, the ultraviolet absorbers include, for example, cinnamic acid-based ultraviolet absorbers such as 2-ethylhexyl paramethoxycinnamate, glyceryl mono-2-ethylhexanoate diparamethoxycinnamate, isopropyl paramethoxycinnamate / diisopropyl cinnamic acid ester mixture, methyl 2,5-diisopropylcinnamate, methylbis(trimethylsiloxy)silylisopentyldrometrizole trisiloxane trimethoxycinnamate, and salicylic acid-based ultraviolet absorbers such as homomentyl salicylate and octyl salicylate. External UV absorbers, triazine-based UV absorbers such as 2,4-bis-[(4-(2-ethylhexyloxy)-2-hydroxy)-phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, 4-(2-β-glucopyranosiloxy)propoxy-2-hydroxybenzophenone, dihydroxydimethoxybenzophenone, dihydroxybenzophenone, tetrahydroxybenzophenone, Benzophenone-based UV absorbers such as 2-hydroxy-4-methoxybenzophenone and sodium hydroxymethoxybenzophenone sulfonate, benzoic acid-based UV absorbers such as 2-[4-(diethylamino)-2-hydroxybenzoyl]hexyl benzoate, para-aminobenzoic acid, amyl para-dimethylaminobenzoate, and 2-ethylhexyl para-dimethylaminobenzoate, 4-tert-butyl-4'-methoxydibenzoylmethane, 2,2-methylenebis(6-(2H-benzotriazole- Examples of UV absorbers include 2-yl)-4-(1,1,3,3-tetramethylbutylphenol), dimethylcodiethylbenzalmalonate, cinoxate, 1-(3,4-dimethoxyphenyl)-4,4-dimethyl-1,3-pentanedione, 2-ethylhexyl dimethoxybenzylidenedioxoimidazolidinepropionate, drometrizole trisiloxane, and ferulic acid. The water-in-oil emulsion cosmetic of the present invention may contain one of the above UV absorbers alone or in combination of two or more.

[0031] Furthermore, in this invention, the water-in-oil emulsion cosmetic is one that can be used on the human body, etc., and is primarily intended for cosmetics, but does not exclude its use in quasi-drugs, pharmaceuticals, etc. Moreover, the aforementioned cosmetics include basic cosmetics, makeup cosmetics, hair cosmetics, etc. Furthermore, since the water-in-oil emulsion cosmetic of this invention is an oil-in-oil emulsion cosmetic with improved makeup retention and long-term stability, it is particularly suitable for sunscreen cosmetics and makeup cosmetics.

[0032] Furthermore, in the present invention, the water-in-oil emulsion cosmetic can be manufactured using a conventional method for manufacturing water-in-oil emulsion cosmetics, and can generally be manufactured by mixing an aqueous component with an oily component, etc.

[0033] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. Also, the numerical values ​​in the formulations below are in mass percent. [Examples]

[0034] (Examples 1-21, Comparative Examples 1-10) The water-in-oil emulsion cosmetics of Examples 1-21 and Comparative Examples 1-10 were prepared by mixing the ingredients listed in Tables 1-6 below using the conventional procedure, i.e., the ingredients listed in Tables 1-6 below, in the amounts (contents) listed below. The obtained water-in-oil emulsion cosmetics were subjected to the following stability tests and stickiness tests based on the following criteria, and the results are shown in Tables 1-6 below. In the tables, "Emulsified FD" in the dosage form indicates an emulsion foundation, polyglyceryl-3 diisostearate dimer dilinoleate is ISOLAN PDI (registered trademark) manufactured by EVONIK, organically modified clay mineral is Esben W (registered trademark) manufactured by Nippon Organic Clay Co., Ltd., (diisostearate / polyhydroxystearate / sebacic acid) polyglyceryl-4 is ISOLAN GPS (registered trademark) manufactured by EVONIK, and hydrogenated trilinoleate tri(polyglyceryl-3 / lauryl) is Cisrol PGTL (trade name) manufactured by Croda Japan Co., Ltd. Furthermore, in the table, water was adjusted to 100% by mass as "residue".

[0035] <Stability Test> Evaluation Method: 50 ml of each example composition was placed in a 60 ml glass vial, sealed, and placed in a 50°C constant temperature bath. After one month, the state was observed, with particular attention paid to the state of the emulsion particles using an optical microscope, and evaluated according to the following evaluation criteria (emulsification stability). In this case, since it was a two-layer dispersion type, the emulsion particles were observed after shaking the sample well. <Evaluation Criteria> 5: No coalescence of emulsified particles is observed. 4: Slight coalescence of emulsion particles is observed. 3: Cohesion of emulsion particles is observed, and the size of the emulsion particles is more than 1.5 times the original size. 2: Cohesion of emulsion particles is observed, and the size of the emulsion particles is more than twice the original size. 1: Cohesion of emulsion particles is observed, and the size of the emulsion particles is more than four times the original size.

[0036] <Stickyness Test> Evaluation Method: To assess the feel of the obtained compositions, a panel of 10 female experts applied each sample to their skin and evaluated the feel (non-stickiness) according to the following criteria. <Evaluation Criteria> 5: All 10 people rated it as not sticky. 4. 7 to 9 people rated it as not sticky. 3. 5-6 people rated it as not sticky. 2 out of 3-4 people rated it as not sticky. 1:2 people or less rated it as not sticky.

[0037] [Table 1]

[0038] [Table 2]

[0039] [Table 3]

[0040] [Table 4]

[0041] [Table 5]

[0042] [Table 6]

[0043] As shown in Tables 1-6, the water-in-oil emulsion cosmetics of Examples 1-21 exhibited good stability and reduced stickiness during use. On the other hand, the water-in-oil emulsion cosmetics of Comparative Examples 1 and 2 had poor stability due to emulsification by fatty acid polyglycerin. Furthermore, the water-in-oil emulsion cosmetic of Comparative Example 3 had poor stability due to insufficient polyglyceryl-3 diisostearate dimer dilinoleate, and the water-in-oil emulsion cosmetic of Comparative Example 4 felt very sticky during use due to excessive polyglyceryl-3 diisostearate dimer dilinoleate. In addition, the water-in-oil emulsion cosmetics of Comparative Examples 5 and 6 had poor stability due to insufficient organic modified clay minerals, and the water-in-oil emulsion cosmetic of Comparative Example 7 had poor stability due to excessive hydrophobic metal oxides. Furthermore, the water-in-oil emulsion cosmetic of Comparative Example 8 felt very sticky during use due to excessive liquid hydrocarbon oil. Furthermore, the water-in-oil emulsion cosmetic of Comparative Example 9 had too much organically modified clay mineral, resulting in a strong sticky feeling during use. In addition, the water-in-oil emulsion cosmetic of Comparative Example 10 had too little liquid hydrocarbon oil, resulting in poor stability.

Claims

1. (A) 0.3 to 3.5% by mass of one or more emulsifiers selected from the group consisting of polyglyceryl-3 diisostearate dimer dilinoleate, polyglyceryl-4 (diisostearate / polyhydroxystearate / sebacate), and tri(polyglyceryl-3 / lauryl) hydrogenated trilinoleate, (B) Liquid hydrocarbon oil 8 to 40% by mass, (C) Organically modified clay minerals 0.15 to 2.5% by mass, (D) Hydrophobized metal oxide 0.4 to 40% by mass, It contains, Furthermore, the water-in-oil emulsion cosmetic is characterized by containing (E) 0.3 to 2.0% by mass of a sorbitan-based surfactant and / or polyhydroxystearic acid.

2. (A) 0.3 to 3.5% by mass of one or more emulsifiers selected from the group consisting of polyglyceryl-3 diisostearate dimer dilinoleate, polyglyceryl-4 (diisostearate / polyhydroxystearate / sebacate), and tri(polyglyceryl-3 / lauryl) hydrogenated trilinoleate, (B) Liquid hydrocarbon oil 8 to 40% by mass, (C) Organically modified clay minerals 0.15 to 2.5% by mass, (D) Hydrophobized metal oxide 0.4 to 40% by mass, It contains, A water-in-oil emulsion cosmetic characterized by not containing silicone oil.

3. The (B) liquid hydrocarbon oil contains an alkane with a molecular weight of 100 to 270. The water-in-oil emulsion cosmetic composition according to claim 1 or claim 2, wherein the content of the alkane having a molecular weight of 100 to 270 is 50% by mass or more relative to the total amount of the liquid hydrocarbon oil (B).

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