Water-in-oil emulsion cosmetics

Abstract

To provide a water-in-oil type emulsion cosmetic that becomes a uniform cosmetic film without becoming sticky and slimy when applied, and has excellent emulsion stability.SOLUTION: A water-in-oil type emulsion cosmetic contains the following components (A) to (E): (A) volatile hydrocarbon oil; (B) one or more kinds selected from dimethyl polysiloxane and disiloxane ; (C) ethanol; (D) metal oxide; (E) nonionic surfactant; and (F) water, in which the content mass ratio (A) / (B) of the component (A) and the component (B) is 0.1 to 10.SELECTED DRAWING: None

Description

[Technical Field]

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

[0002] Water-in-oil emulsion cosmetics are commonly used in skin care cosmetics and makeup cosmetics, particularly base makeup items such as foundations.

[0003] Emulsion cosmetics that can provide not only moisture but also oil to the skin have been the subject of much research in the cosmetics field as a formulation with high added value. These emulsion cosmetics can be broadly divided into oil-in-water emulsion cosmetics and water-in-oil emulsion cosmetics. Water-in-oil emulsion cosmetics coat the skin surface with an oil film, preventing moisture evaporation and protecting the skin from dryness, and are therefore characterized by excellent emollient, moisturizing, and treatment effects on the skin. To date, various efforts have been made to develop water-in-oil emulsion cosmetics that satisfy both the sense of use, such as smooth spreadability and adhesion to the skin, and stability over time.

[0004] For example, there is a technology relating to a water-in-oil emulsion cosmetic containing hydrophobized silica, a water-soluble polymer, a lipophilic surfactant with an HLB value of 7 or less, oil, and water (see, for example, Patent Document 1), and a technology relating to a water-in-oil emulsion cosmetic characterized by containing 0.05 to 10.0 wt% of polyether-modified silicone, 0.05 to 5.0 wt% of a water-soluble polymer electrolyte, and 0.05 to 5.0 wt% of an inorganic salt and / or organic salt, and containing either or both of a glycerin branched fatty acid and / or unsaturated fatty acid ester, a sorbitan branched fatty acid and / or unsaturated fatty acid ester (see, for example, Patent Document 2). There is also a technology relating to a water-in-oil emulsion composition characterized by containing one or more components selected from glycerin monooleate, glycerin monoisostearate, and polyoxyethylene glyceryl monoisostearate, an aqueous component, and (C) an oily component including a solid oil, and satisfying specific conditions (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-160714 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-348210 [Patent Document 3] Japanese Patent Application Laid-Open No. 2008-24630 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a water-in-oil emulsion cosmetic that does not become sticky when applied, forms a uniform cosmetic film, and has excellent emulsion stability. [Means for solving the problem]

[0007] In view of these circumstances, the present inventors conducted extensive research to achieve a water-in-oil emulsion cosmetic with the quality to spread smoothly on the skin and leave a uniform cosmetic film. As a result, they discovered that by combining a volatile hydrocarbon and a short-chain silicone, which is a volatile silicone, in a ratio of 0.1 to 1.0 with a water-in-oil emulsion cosmetic containing a metal oxide and a nonionic surfactant, and further containing ethanol, it is possible to achieve a water-in-oil emulsion cosmetic that spreads smoothly without streaks and leaves a uniform cosmetic film. Based on these findings, the present invention was completed.

[0008] That is, the present invention provides the following components (A) to (E): (A) Volatile hydrocarbon oil (B) one or more selected from dimethylpolysiloxane and disiloxane (C) Ethanol (D) Metal oxide (E) Nonionic surfactants (F)Water The present invention provides a water-in-oil emulsion cosmetic containing the above components, wherein the mass ratio of component (A) to component (B) is (A) / (B)=0.1 to 10. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a water-in-oil emulsion cosmetic that does not become sticky when applied, forms a uniform cosmetic film, and has excellent emulsion stability. BEST MODE FOR CARRYING OUT THE INVENTION

[0010] The present invention will be described in detail below. In this specification, "to" means a range including the numerical values ​​before and after it. In addition, the "average particle size" in this invention is the median diameter D50 value determined by measurement using an image analyzer (Luzex AP, manufactured by Nireco Corporation). In the case of asymmetric shapes, the median diameter D50 determined from the distribution of the largest particle diameter is used as the average particle size in this invention.

[0011] The volatile hydrocarbon oil (component (A)) of the present invention is a hydrocarbon oil having a boiling point of 260°C or less at normal pressure. Such volatile hydrocarbons are not particularly limited, but examples include light isoparaffin, isododecane, isohexadecane, etc., and these may be used alone or in combination of two or more. Commercially available products include IP Solvent 1620, IP Solvent 2028 (both manufactured by Idemitsu Petrochemical Co., Ltd.), and PERMETHYL 99A (manufactured by PRESPERS Co., Ltd.). Among these, from the viewpoints of slipperiness and uniformity of the cosmetic film, one or more selected from the group consisting of isododecane, isohexadecane, and light liquid isoparaffin are preferred, and it is even more preferred that the volatile hydrocarbon is isododecane.

[0012] In the present invention, the content of component (A) is not particularly limited, but is preferably 1 to 30% by mass (hereinafter simply abbreviated as "%"), and more preferably 5 to 20%, of the total amount of the cosmetic. This range is more preferable because it provides a smooth, uniform cosmetic film.

[0013] In the present invention, the one or more members selected from dimethylpolysiloxanes and disiloxanes of component (B) are dimethylsiloxanes or polymers thereof represented by the following general formula: (CH3)3SiO[Si(CH3)2O] n Si (CH3)3(1) (In the formula, n is 0 to 2000.) The disiloxane of component (B) in the present invention is a compound in which n = 0 in the above formula (1). Component (B) in the present invention is not particularly limited as long as it is one commonly used in cosmetics, and components with various kinematic viscosities can be used. For example, the kinematic viscosity at 25°C can be 0.65 to 1,000,000 CS, with 0.65 to 100 CS being preferred, 0.65 to 10 CS being more preferred, and 0.65 to 5 CS being even more preferred. This range is more preferred because it provides superior non-stickiness and uniformity in the cosmetic film. In the present invention, from the viewpoint of non-stickiness and uniformity in the cosmetic film, it is preferable to use one or more volatile compounds selected from dimethylpolysiloxane and disiloxane. Here, "volatile" refers to compounds with a low boiling point (a boiling point of 260°C or less at normal pressure) that volatilize at room temperature. Component (B) of the present invention can be a commercially available product, such as KF-96L-0.65cs, KF-96L-1cs, KF-96L-1.5cs, KF-96L-2cs, KF-96L-5cs, KF-96L-10cs, KF-96L-20cs, KF-96L-50cs, KF-96L-100cs, or KF-96L-1000cs (all manufactured by Shin-Etsu Chemical Co., Ltd.).

[0014] In the present invention, the content of component (B) is not particularly limited, but is preferably 0.5 to 30%, more preferably 1 to 20%, of the total amount of the cosmetic preparation. This range is more preferable because it results in a non-sticky, uniform cosmetic film.

[0015] In the present invention, the mass ratio (A) / (B) of the above-mentioned components (A) and (B) is 0.1 to 10, and although the present invention can be achieved by appropriately incorporating components within this range, specifying the mass ratio is preferred because even greater effects can be expected. While this mass ratio is not particularly limited, the lower limit of the mass ratio (A) / (B) of the components (A) and (B) is preferably 0.1 or more, more preferably 0.5 or more, and even more preferably 0.7 or more. The upper limit is preferably 10 or less, more preferably 5 or less, and even more preferably 3 or less. This range is more preferable because it provides superior non-stickiness and emulsion stability. Furthermore, it has been discovered that by incorporating components (A) and (B) in this mass ratio, a feel similar to that of conventional water-in-oil emulsion cosmetics using volatile oils primarily composed of cyclic silicone oils can be achieved.

[0016] Component (C) in the present invention is ethanol. Any ethanol commonly used in cosmetics can be used as component (C) in the present invention, and commercially available ethanol such as 95% undenatured ethanol and various types of ethanol may be used.

[0017] In the present invention, the content of component (C) is not particularly limited, but is preferably 0.1 to 25%, more preferably 0.2 to 20%, and particularly preferably 0.5 to 15%, of the total amount of the cosmetic. This range is more preferable because it results in a non-sticky, uniform cosmetic film.

[0018] The metal oxide component (D) of the present invention is not particularly limited by its shape (e.g., spherical, plate-like, or needle-like), particle size (e.g., mist-like, fine particles, or pigment-grade), or particle structure (e.g., porous or nonporous), as long as it is a metal oxide commonly used in cosmetics. Component (D) of the present invention can be, for example, an oxide of an element such as Al (aluminum), Mg (magnesium), Sn (tin), Zn (zinc), Co (cobalt), Fe (iron), Zr (zirconium), Ti (titanium), or Ce (cerium). Component (D) of the present invention has the effect of coloring or imparting covering power to cosmetics. Specific examples include aluminum oxide, magnesium oxide, tin oxide, zinc oxide, iron oxides such as yellow iron oxide, red iron oxide, and black iron oxide, titanium dioxide, and cerium oxide, and these may be used alone or in combination. Among these, one or more selected from the group consisting of zinc oxide, titanium dioxide, and iron oxide are preferred, with zinc oxide and / or titanium dioxide being more preferred.

[0019] The metal oxides used in the present invention may be surface-treated by known methods using silicone compounds, silane treatment, fluorine compounds, metal soaps, collagen, hydrocarbons, higher fatty acids, lecithin, higher alcohols, esters, waxes, amino acids, surfactants, etc., as needed, or may even be composites of these. In the present invention, hydrophobizing the surface of the metal oxide is particularly preferred, as it prevents aggregation of the metal oxides and provides superior emulsion stability and a uniform cosmetic film. The surface treatment agent is preferably one or more selected from the group consisting of metal soaps, amino acids, silicone compounds, and lecithin, and more preferably one or more selected from the group consisting of metal soaps, amino acids, and silicone compounds. The metal soaps used in the surface treatment agent of the present invention are those neutralized with a fatty acid and a base, such as zinc stearate, magnesium stearate, zinc myristate, and zinc laurate. The amino acids used in the surface treatment agent of the present invention include not only amino acids such as theanine, but also amino acid salts and derivatives thereof. Examples include N-acylated amino acids or salts thereof, and specific examples include disodium stearoyl glutamate and sodium dilauroyl glutamate lysine. Examples of silicone compounds used in the surface treatment agent of the present invention include methylpolysiloxane and hydrogenpolysiloxane. Examples of silane-treated surface treatment agents of the present invention include triethoxycaprylylsilane and aminopropyltriethoxysilane. In the present invention, it is preferable to use a combination of multiple surface-treated metal oxides, and it is particularly preferable to use a combination of two or more metal oxides that have been surface-treated with different surface treatment agents. The amount of surface treatment agent used relative to the metal oxide in the present invention is not particularly limited, but is preferably 0.5 to 5%, more preferably 1 to 4%, and even more preferably 2 to 3%.

[0020] In the present invention, the content of component (D) is not particularly limited, but is preferably 0.1 to 25%, more preferably 0.5 to 20%, and even more preferably 1 to 15%, of the total amount of the cosmetic. This range is more preferable because it results in a more uniform cosmetic film.

[0021] The nonionic surfactant component (E) of the present invention is a surfactant that has both a lipophilic group and a hydrophilic group in the same molecule and exhibits nonionic properties when dissolved in water. The HLB of component (E) of the present invention is not particularly limited, but since the present invention is a water-in-oil type, from the viewpoint of emulsion stability, the HLB is preferably 7 or less, more preferably 5 or less. The lower limit of the HLB value of the present invention is not particularly limited, and is preferably 1 or more, more preferably 2 or more. The component (E) of the present invention is not particularly limited as long as it is a nonionic surfactant, and may be either linear or contain a branched structure, and one or a combination of two or more of these may be contained as needed.

[0022] Here, in the present invention, HLB is a value that represents the balance between hydrophilicity and lipophilicity of a surfactant, and specifically, in the present invention, it can be calculated by the following Kawakami formula. HLB = 7 + 11.7 log(Mw / Mo) (Here, Mw represents the molecular weight of the hydrophilic base, and Mo represents the molecular weight of the new oil base.)

[0023] In the present invention, component (E) is not particularly limited as long as it is a nonionic surfactant, and can be obtained by appropriately selecting one, but it is preferable to use two or more types in combination, as this is expected to produce a higher effect. In particular, using (E1) a silicone surfactant and (E2) a sugar fatty acid ester or glycerin fatty acid ester is more preferable, as this provides better emulsion stability.

[0024] In (E1), examples of silicone surfactants include polyglycerin-modified silicones such as lauryl polyglyceryl 3-polydimethylsiloxyethyl dimethicone, and polyether-modified silicones such as PEG-9 methyl ether dimethicone, PEG-10 dimethicone, cetyl PEG / PPG-10 / 1 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, cetyl PEG-9 polydimethylsiloxyethyl dimethicone, polyoxyethylene-butylene-dimethylpolysiloxane copolymer, and polyoxyethylene-polyoxypropylene-butylene-dimethylpolysiloxane copolymer. Among these, polyether-modified silicones or polyglycerin-modified silicones are preferred, and polyether-modified silicones are more preferred. Specifically, one or more selected from the group consisting of cetyl PEG / PPG-10 / 1 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, and lauryl PEG-9 polydimethylsiloxyethyl dimethicone are preferred.

[0025] In (E2), the sugar fatty acid ester is an ester of a fatty acid and a sugar. The fatty acid may be branched or unbranched, and the number of carbon atoms in the fatty acid is not particularly limited, but the lower limit is preferably 8 or more, more preferably 10 or more, and even more preferably 14 or more. The upper limit is preferably 22 or less, more preferably 18 or less. This range is more preferable because it provides better emulsion stability. The sugar in the sugar fatty acid ester is not particularly limited, but examples thereof include glucose, sucrose, and sorbitan. As long as it is a sugar fatty acid ester, it is not particularly limited, but specific examples include sorbitan monooleate, sorbitan sesquioleate, sorbitan dioleate, sorbitan trioleate, sorbitan monoisostearate, sorbitan diisostearate, sorbitan triisostearate, sorbitan monostearate, sorbitan sesquistearate, sorbitan distearate, sorbitan sesquiisostearate, sorbitan triisostearate, methylglucose sesquistearate, and sucrose fatty acid esters. Among these, one or more selected from the group consisting of sucrose fatty acid esters, sorbitan sesquioleate, and sorbitan sesquiisostearate are preferred.

[0026] In (E2), the glycerin fatty acid ester is an ester of a fatty acid and glycerin. In the present invention, the glycerin in the glycerin fatty acid ester may be polymerized. The degree of polymerization of glycerin is not particularly limited, but the lower limit is preferably 1 or more, more preferably 2 or more. The upper limit is preferably 16 or less, more preferably 10 or less, and more preferably 6 or less. This range is more preferable because it provides excellent non-slipidity and emulsion stability. The glycerin fatty acid ester is not particularly limited, but specific examples include polyglycerin fatty acid esters such as polyglyceryl-10 stearate, polyglyceryl-10 diisostearate, polyglyceryl-10 tristearate, polyglyceryl-6 isostearate, polyglyceryl-5 trioleate, polyglyceryl-10 laurate, polyglyceryl-2 isostearate, and polyglyceryl-2 diisostearate. Among these, one or more selected from the group consisting of polyglyceryl-10 laurate, polyglyceryl-2 isostearate, and polyglyceryl-2 diisostearate are preferred.

[0027] In the present invention, the content of component (E) is not particularly limited, but is preferably 0.1 to 6%, and more preferably 0.5 to 4%, of the total amount of the cosmetic preparation. This range is more preferable because it results in a more uniform cosmetic film and superior emulsion stability.

[0028] The component (F) water in the present invention may be tap water, purified water purified by distillation or the like, hot spring water, deep sea water, etc. Also, plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender, and rose water may be used.

[0029] In the present invention, the content of component (F) is not particularly limited, but is preferably 10 to 60%, more preferably 15 to 50%, of the total amount of the cosmetic preparation, as this range provides better emulsion stability and less slippery feeling, making it more preferable.

[0030] Component (G) in the present invention is an oil other than components (A) and (B) that is liquid at 25°C. Component (G) in the present invention is not particularly limited as long as it is an oil that is commonly used in cosmetics, and examples thereof include hydrocarbon oils, ester oils, higher alcohols, silicone oils, and fluorine-based oils. Examples include hydrocarbon oils such as liquid paraffin, squalane, polybutene, and polyisobutylene, jojoba oil, cetyl 2-ethylhexanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, octyl palmitate, glyceryl tri-2-ethylhexanoate, polyglyceryl diisostearate, polyglyceryl isostearate, polyglyceryl-10 decaethylhexanoate, ethylhexyl hydroxystearate, diethylhexyl succinate, and tritridecyl trimellitate. Examples of suitable oils include ester oils such as diisostearyl malate, diisostearyl malate, polyglyceryl triisostearate, isotridecyl isononanoate, and neopentyl glycol dioctanoate, higher alcohols such as oleyl alcohol, octyldodecanol, and decyltetradecanol, silicone oils such as dimethiconol, methylphenylpolysiloxane, cyclopentasiloxane, trifluoropropylcyclotetrasiloxane, and trifluoropropylcyclopentasiloxane, and fluorine-containing oils such as perfluoropolyethers. In the present invention, these oils may be used alone or in combination of two or more.

[0031] In the present invention, component (G) and components (A) and (B) can be appropriately contained to obtain the desired results, but specifying the mass ratios at which they are contained is preferred because greater effects can be expected. The mass ratio (G) / [(A)+(B)] of components (G), (A), and (B) is not particularly limited, but the lower limit of (G) / [(A)+(B)] is preferably greater than 0, more preferably 0.0001 or greater, and even more preferably 0.001 or greater. The upper limit is preferably 1 or less, more preferably 0.7 or less, and even more preferably 0.1 or less. This range is more preferred because it provides a smoother, more uniform cosmetic film.

[0032] The oil-soluble film-forming agent (component (H)) of the present invention is a film-forming agent that is soluble in oil. Here, "soluble in oil" means that the film-forming agent becomes homogeneous when mixed with an oil solvent (e.g., a volatile silicone oil such as a cyclic silicone oil or a short-chain dimethicone, or a volatile hydrocarbon) at 60°C. In the present invention, the film-forming agent is not particularly limited, but may be one that forms a film when a 40% solution dissolved in a soluble solvent is applied to a glass plate with a 400 μm thick applicator and dried at room temperature for 24 hours. Specific examples include hydrocarbon film-forming agents such as polyethylene and polypropylene; acrylic acid polymer film-forming agents such as acrylate copolymers and (styrene / acrylate) copolymers; and silicone film-forming agents such as trimethylsiloxysilicate, polymethylsilsesquioxane, and (acrylates / dimethicone) copolymers. Of these, silicone film-forming agents are preferred, trimethylsiloxysilicate or (acrylates / dimethicone) copolymer is more preferred, and trimethylsiloxysilicate is even more preferred.

[0033] The content of component (H) in the present invention is not particularly limited, but is preferably 0.1 to 10%, more preferably 0.5 to 5%, and even more preferably 1 to 3% of the total amount of the cosmetic. This range is more preferable because it results in a smoother and more uniform cosmetic film.

[0034] The component (I) polyalkylene glycol in the present invention is , O The polyoxyalkylene group in the present invention is not particularly limited, but examples thereof include polypropylene glycol in which propylene oxide structural units are polymerized, polyethylene glycol in which ethylene oxide structural units are polymerized, polybutylene glycol in which butylene oxide structural units are polymerized, and copolymers thereof. The state of the polyalkylene glycol in the present invention is not particularly limited, but it may be liquid, solid, or a mixture thereof. For example, polypropylene glycol, tripropylene glycol, dipropylene glycol, polyethylene glycol, Lu et al.In the present invention, one or more selected from the group consisting of tripropylene glycol, dipropylene glycol, and polyethylene glycol are preferred.

[0035] The content of component (I) in the present invention is not particularly limited, but is preferably 1 to 20%, more preferably 3 to 15%, and even more preferably 5 to 10% of the total amount of the cosmetic. This range is more preferable because it results in a smoother and more uniform cosmetic film.

[0036] In addition to the above-mentioned components (A) to (I), the water-in-oil emulsion cosmetic of the present invention may contain components that are commonly used in cosmetics, such as oily components other than components (A), (B), and (G), powders other than component (D), surfactants other than component (E), fibers, alcohols (monohydric alcohols, polyhydric alcohols, etc. other than component (C)), water-soluble polymers, aqueous components such as moisturizers other than component (I), sugars, antioxidants, antifoaming agents, cosmetic ingredients, preservatives, fragrances, etc., within the scope that does not impair the effects of the present invention.

[0037] The water-in-oil emulsion cosmetic of the present invention can be produced by a conventional method, for example, by adding an aqueous fraction containing components (C), (F), and (I) to an oily fraction containing components (A), (B), (D), (E), (G), and (H) and emulsifying the mixture, but the production method is not limited to this.

[0038] The form of the water-in-oil emulsion cosmetic of the present invention is not particularly limited, and may be any of liquid, gel, cream, semi-solid, solid, stick, and the like.

[0039] Examples of the water-in-oil emulsion cosmetic of the present invention include skin care cosmetics such as emulsions and lotions, pack cosmetics, facial cleansers, massage cosmetics, hair cosmetics, sunscreens, body cosmetics such as body creams, beauty serums such as daytime beauty serums, eye cosmetics such as eye creams, lip care cosmetics such as lip essences and lip creams, and makeup cosmetics such as foundations, primers, concealers, eye shadows, blushers, lipsticks, mascaras, eyebrow pencils, etc. Of these, makeup cosmetics are preferred, and one or more selected from the group consisting of foundations, primers, and concealers are more preferred. [Example]

[0040] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

[0041] Examples 1 to 20 and Comparative Examples 1 to 6: Water-in-oil liquid foundation Water-in-oil liquid foundations were prepared according to the formulations shown in Tables 1 to 3 below, and evaluated for (i) non-stickiness, (ii) uniformity of cosmetic film, and (iii) emulsion stability using the following evaluation methods. The results are also shown in Tables 1 to 3.

[0042] (Evaluation method) A 20-person expert panel conducted usability tests for each sample for the following items A and B. Each panelist applied each sample to their entire face, and for (A), a sample that did not feel sticky when 0.2 mL was applied to the skin and could be applied within 10 seconds was rated as good. For (B), a sample that formed a uniform cosmetic film after application was rated as good, and the results were judged according to the following criteria. Here, expert panels refer to women in their 20s to 50s who have been trained in the sensory evaluation of cosmetics and are able to evaluate them according to certain standards.

[0043] <Evaluation items> (a) Lack of cheating (b) Uniform makeup film

[0044] <Judgment criteria> (Judgment): (Evaluation) A: More than 16 out of 20 people answered that they were in good condition. B: Of 20 people, 11 to 15 people answered "good" C: Out of 20 people, 6 to 10 people answered "good" D: Less than 5 out of 20 people answered "good"

[0045] (Evaluation method) Regarding the item (iii) below, 50 g of each sample was filled into a No. 6 standard bottle and stored in a 40°C thermostatic chamber, and the emulsion stability was visually confirmed and judged according to the following criteria.

[0046] <Evaluation items> (c) Emulsion stability

[0047] <Judgment criteria> (Judgment): (Evaluation) A: No change after 1 month B: Separation has occurred at 1 month C: Separation has occurred at 2 weeks D: Separation has occurred at 1 week Here, the occurrence of separation means that the supernatant can be confirmed by tilting the standard bottle.

[0048] [Table 1]

[0049] [Table 2]

[0050] [Table 3]

[0051] *1: IP Solvent 1620 (manufactured by Idemitsu Kosan) *2: 3% zinc laurate treatment *3: Treated with 3% triethoxycaprylylsilane

[0052] (Manufacturing method) A: Mix ingredients (1) to (15) uniformly at 80°C until dissolved. B: Components (16) to (23) are added to A and mixed and dispersed uniformly using a roll mill. C: Mix ingredients (24) to (27) uniformly. D: Add C to B and emulsify using a disper mixer at 2000 rpm at room temperature for 5 minutes. E:D was filled into a container to obtain a water-in-oil liquid foundation.

[0053] As is clear from the results in Tables 1 to 3, the examples of the present invention were superior to the comparative examples in terms of non-stickiness, uniform cosmetic film formation, and emulsion stability. On the other hand, in Comparative Example 1, the absence of volatile hydrocarbon oil caused the cosmetic film to slip, impairing the uniformity of the film, and unsatisfactory quality was not obtained. Furthermore, in Comparative Example 2, liquid paraffin, a non-volatile hydrocarbon oil, was used instead of the volatile hydrocarbon oil, but the cosmetic film slipped, impairing the uniformity of the film, and unsatisfactory quality was not obtained. Furthermore, in Comparative Example 3, the absence of dimethylpolysiloxane caused the film to slip, preventing the formation of a uniform cosmetic film, and furthermore, the emulsion stability was poor, and unsatisfactory quality was not obtained. In Comparative Example 4, the absence of ethanol caused the film to slip, and unsatisfactory quality was not obtained. In Comparative Example 5, the A / B ratio was less than 0.1, and although the uniform cosmetic film and emulsion stability were somewhat good, the film slipped, and unsatisfactory quality was not obtained. In Comparative Example 6, the A / B ratio was greater than 10, and although there was no slippage and the cosmetic film was somewhat uniform, unsatisfactory quality in terms of emulsion stability was not obtained.

[0054] Example 21: Water-in-oil BB cream A water-in-oil BB cream was prepared using the composition and manufacturing method shown below. (composition) (%) (1) Isododecane 15 (2) Dimethylpolysiloxane (25°C kinematic viscosity 2CS) 10 (3) Lauryl PEG-9 Polydimethylsiloxyethyl dimethicone 0.8 (4) PEG-9 Polydimethylsiloxyethyl Dimethicone 0.4 (5) Sorbitan sesquiisostearate 0.6 (6) Neopentyl glycol diethylhexanoate 10 (7) 2-Ethylhexyl para-methoxycinnamate 5 (8) 2-(4-diethylamino-2-hydroxybenzoyl) Benzoic acid hexyl ester 2 (9) Trimethylsiloxysilicate 2 (10) Disodium N-Stearoyl-L-Glutamate 3% treated titanium dioxide (average particle size 300nm) 9 (11) Triethoxycaprylylsilane 2% treated black iron oxide 0.3 (12) Yellow iron oxide treated with 2% triethoxycaprylylsilane 1.8 (13) Triethoxycaprylylsilane 2% treated red iron oxide 0.6 (14) Triethoxycaprylylsilane 2% treated talc 1 (15) Dimethyl distearyl ammonium hectorite 1.5 (16) Benzyl dimethyl stearyl ammonium hectorite 0.6 (17) Spherical silica 5 (18) Remaining purified water (19) Ethanol 5 (20) Tripropylene glycol 10

[0055] (Manufacturing method) A: Heat ingredients (1) to (9) to 80°C and mix until uniformly dissolved. B: Components (10) to (17) are added to A and mixed and dispersed uniformly using a roll mill. C: Mix ingredients (18) to (20) uniformly. D: Add C to B and emulsify using a disper mixer at 2000 rpm at room temperature for 5 minutes. E:D was filled into a container to obtain a water-in-oil BB cream.

[0056] The water-in-oil BB cream of Example 21 obtained as described above was excellent in all of the following: "non-stickiness," "uniform cosmetic film," and "emulsion stability."

[0057] Example 22: Water-in-oil type shaking foundation A water-in-oil type shaking foundation was prepared using the composition and manufacturing method shown below. (composition) (%) (1) Isododecane 15 (2) Dimethylpolysiloxane (25°C kinematic viscosity 2CS) 10 (3) Cetyl PEG / PPG-10 / 1 Dimethicone 1.2 (4) Polyglyceryl-2 diisostearate 0.6 (5) Neopentyl glycol diethylhexanoate 10 (6) 2-Ethylhexyl para-methoxycinnamate 5 (7) 2-(4-diethylamino-2-hydroxybenzoyl) Benzoic acid hexyl ester 2 (8) (Acrylates / Dimethicone) Copolymer 2 (9) Titanium dioxide treated with 3% zinc laurate (Average particle size 300nm) 9 (10) Triethoxycaprylylsilane 2% treated black iron oxide 0.3 (11) Yellow iron oxide treated with 2% triethoxycaprylylsilane 1.8 (12) Triethoxycaprylylsilane 2% treated red iron oxide 0.6 (13) Triethoxycaprylylsilane 2% treated talc 1 (14) Spherical silica 5 (15) Remaining purified water (16) Ethanol 5 (17) Tripropylene glycol 10

[0058] (Manufacturing method) A: Heat ingredients (1) to (8) to 80°C and mix until uniformly dissolved. B: Components (9) to (14) are added to A and mixed and dispersed uniformly using a roll mill. C: Mix components (15) to (17) uniformly. D: Add C to B and emulsify using a disper mixer at 2000 rpm at room temperature for 5 minutes. E:D was filled into a container to obtain a water-in-oil type shaking foundation.

[0059] The water-in-oil shaking foundation of Example 22 obtained in this manner was excellent in all respects: "non-slipperiness," "uniform cosmetic film," and "emulsion stability."

Claims

1. The following components (A) to (I): (A) Volatile hydrocarbon oil (B) Dimethylpolysiloxane (C) Ethanol (D) Metal oxide (E) Nonionic surfactant (F) Water (G) An oil other than component (A) and component (B) that is liquid at 25°C (H) Oil-soluble film-forming agent (I) Polyalkylene glycol Contains the mass ratio (A) / (B) of the component (A) to the component (B) is 0.1 to 10; The component (B) has a kinematic viscosity at 25°C of 1 CS to 5 CS, a content mass ratio (G) / {(A)+(B)} of the component (G), the component (A), and the component (B) is greater than 0 and less than or equal to 1, the component (E) comprises (E1) a silicone surfactant and (E2) a sugar fatty acid ester or a glycerin fatty acid ester, said component (H) comprising trimethylsiloxysilicate or (acrylates / dimethicone) copolymer; One or more selected from the group consisting of foundation, primer, and concealer, Water-in-oil emulsion cosmetics.

2. A water-in-oil emulsion cosmetic as described in claim 1, wherein component (E) consists solely of a nonionic surfactant having an HLB of 1 or more and 5 or less.

3. A water-in-oil emulsion cosmetic according to claim 1 or 2, wherein the mass ratio (G) / {(A)+(B)} of the components (G), (A) and (B) is greater than 0 and not greater than 0.

7.

4. The water-in-oil emulsion cosmetic according to any one of claims 1 to 3, wherein the component (D) metal oxide comprises two or more metal oxides that have been surface-treated with one or more treating agents selected from the group consisting of metal soaps, amino acids or derivatives thereof, triethoxycaprylylsilane, and silicones.

5. A water-in-oil emulsion cosmetic according to any one of claims 1 to 4, wherein the component (D) metal oxide comprises a metal oxide that has been surface-treated with a metal soap.

6. 6. The water-in-oil emulsion cosmetic according to claim 1, wherein the component (A) is one or more selected from the group consisting of isododecane, isohexadecane, and light liquid isoparaffin.

7. 7. The water-in-oil emulsion cosmetic according to claim 1, wherein the component (E) consists solely of (E1) a silicone surfactant and (E2) a sugar fatty acid ester or a glycerin fatty acid ester.

8. A water-in-oil emulsion cosmetic according to any one of claims 1 to 7, wherein component (I) comprises one or more selected from the group consisting of tripropylene glycol, polypropylene glycol, and polybutylene glycol.

9. 9. The water-in-oil emulsion cosmetic according to claim 8, wherein the component (I) comprises tripropylene glycol.

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