Water-in-oil emulsified cosmetic composition

Abstract

Provided is a water-in-oil emulsified cosmetic composition having a feeling of fit and a unique cushioning feel when applied.　A water-in-oil emulified cosmetic composition, wherein the following components (A)-(C) are contained in an oil phase: (A) a silicone elastomer; (B) hydrophobized silica particles; and (C) a coating agent, the average particle size of component (B) being 1.0-10 μm.

Description

Water-in-oil type emulsified cosmetic composition

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

[0002] Currently, various makeup cosmetics are being developed.

[0003] For example, in Patent Document 1, a water-in-oil type emulsified base makeup cosmetic containing (a) a volatile oil component, (b) a hydrophobic powder, and (c) an amphiphilic associative thickener has been reported.

[0004] Japanese Patent Application Laid-Open No. 2010-111634

[0005] However, the feel of use of makeup cosmetics such as foundation and makeup base, particularly in the case of liquid makeup cosmetics, still has room for improvement.

[0006] The present invention attempts to improve the above circumstances, and its object is to provide a water-in-oil type emulsified cosmetic composition having a fitting feeling and a unique cushion feeling when applied.

[0007] The present invention for achieving the above object is as follows.

[0008] <Aspect 1> An oil-in-water emulsion cosmetic composition, wherein the oil phase contains the following components (A) to (C): (A) a silicone elastomer, (B) hydrophobized silica particles, and (C) a film-forming agent, and the average particle size of component (B) is 1.0 to 10 μm. <Aspect 2> The composition according to aspect 1, wherein the content of component (A) is 30 to 350 parts by mass per 100 parts by mass of component (B). <Aspect 3> The composition according to aspect 1 or 2, wherein the content of component (C) is 1.0 to 8.5% by mass. <Aspect 4> The composition according to any one of aspects 1 to 3, wherein the content of component (A) is 0.25 to 5.0% by mass. <Aspect 5> The composition according to any one of aspects 1 to 4, wherein the content of component (B) is 0.5 to 5.0% by mass. <Aspect 6> The composition according to any one of aspects 1 to 5, wherein component (B) comprises at least one hydrophobic silica particle selected from the group consisting of dimethicone-treated silica particles and amodimethicone-treated silica particles. <Aspect 7> The composition according to any one of aspects 1 to 6, wherein component (C) comprises a silicone-based coating agent. <Aspect 8> The composition according to aspect 7, wherein the silicone-based coating agent comprises at least one selected from the group consisting of trimethylsiloxysilicate, polymethylsilsesquioxane, (trimethylsiloxysilicate / dimethiconol) crosspolymer, and trifluoroalkyldimethyltrimethylsiloxysilicate. <Aspect 9> The composition according to any one of aspects 1 to 8, further comprising (D) a colorant. <Aspect 10> A makeup cosmetic comprising the composition according to any one of aspects 1 to 9. <Aspect 11> The makeup cosmetic according to aspect 10, which is in liquid form.

[0009] According to the present invention, it is possible to provide a water-in-oil emulsion cosmetic composition that has a comfortable fit and a unique cushioning sensation when applied.

[0010] The present invention can also provide a makeup cosmetic comprising a water-in-oil emulsion cosmetic composition that has a comfortable fit and a unique cushioning sensation when applied.

[0011] The embodiments of the present invention will be described in detail below. However, the present invention is not limited to the embodiments described below, and can be implemented with various modifications within the scope of the essence of the invention.

[0012] 《Water-in-Oil Emulsified Cosmetic Composition》 The water-in-oil emulsion cosmetic composition of the present invention (hereinafter also referred to as "the composition of the present invention") contains the following components (A) to (C) in the oil phase: (A) silicone elastomer, (B) hydrophobized silica particles, and (C) film-forming agent, and the average particle size of component (B) is 1.0 to 10 μm.

[0013] The composition of the present invention, by incorporating specific components (A) to (C) in its oil phase, can provide a comfortable fit and a unique cushioning sensation when applied.

[0014] In this invention, "fit" means that when applying the cosmetic to the skin, there is little to no feeling of slipperiness (a slimy feeling), and the cosmetic adheres firmly to the skin surface.

[0015] Furthermore, in this invention, "unique cushioning sensation" refers to the feeling that when applying cosmetics to the skin, the cosmetics do not feel hard, but rather have a soft, bouncy elasticity when lightly pressed, and can also be described as a "bouncing sensation."

[0016] Thus, the composition of the present invention, through its specific components, can provide a pleasant user experience when applied to the skin. The components that may be included in the composition of the present invention will be described in detail below.

[0017] [Oil Phase] The composition of the present invention includes an oil phase.

[0018] In the composition of the present invention, the content of the oil phase is not particularly limited and may be, for example, 30% by mass or more, 35% by mass or more, 40% by mass or more, 45% by mass or more, 50% by mass or more, 55% by mass or more, 60% by mass or more, 65% by mass or more, or 70% by mass or more relative to the whole composition, or it may be 90% by mass or less, 85% by mass or less, 80% by mass or less, or 75% by mass or less.

[0019] (Oil Content) In the composition of the present invention, oil constitutes the oil phase (also referred to as the "continuous phase" or "external phase"). In the present invention, oil refers to an oily medium, but functional oil phase components such as film-forming agents and surfactants are not included in the concept of oil.

[0020] In the present invention, the oil component is not particularly limited and may include at least one of volatile oil components and non-volatile oil components. In the present invention, "volatile" oil component means an oil component with a boiling point of 260°C or lower at normal pressure (1 atm). Correspondingly, in the present invention, "non-volatile" oil component means an oil component with a boiling point of more than 260°C at normal pressure (1 atm).

[0021] The specific oil content is not particularly limited and includes, but is not limited to, silicone oils, polar oils, hydrocarbon oils, fatty acids, and fats and oils.

[0022] Examples of silicone oils include, but are not limited to, modified silicone oils such as dimethylpolysiloxane (also called "dimethicone"), methylphenylpolysiloxane (also called "diphenylsiloxyphenyl trimethicone"), methylhydrogenpolysiloxane, dimethylsiloxane / methylphenylsiloxane copolymers, and other diorganopolysiloxanes ranging from low to high viscosity; cyclic siloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and tetramethyltetraphenyltetracyclosiloxane; highly polymerized gum-like dimethylpolysiloxane, gum-like dimethylsiloxane / methylphenylsiloxane copolymers, and other cyclic siloxane solutions such as gum-like dimethylpolysiloxane; trimethylsiloxysilicate and other cyclic siloxane solutions of trimethylsiloxysilicate; diorganopolysiloxanes having alkyl groups with 6 to 50 carbon atoms; amino-modified silicones; alkyl-modified silicones; and fluorine-modified silicones.

[0023] Examples of polar oils include, but are not limited to, ester oils or ultraviolet absorbers. In this invention, "polar oil" refers to oils other than silicone oils that are highly polar and can be used in cosmetics, for example, those with an IOB value of 0.10 or higher, 0.11 or higher, 0.12 or higher, or 0.13 or higher. The IOB value of the polar oil according to this invention may be 2.0 or lower, 1.5 or lower, 1.0 or lower, 0.50 or lower, 0.45 or lower, or 0.40 or lower. The IOB value is an abbreviation for Inorganic / Organic Balance, and is a value that represents the ratio of the inorganic value to the organic value, and is an indicator of the degree of polarity of an organic compound. Specifically, the IOB value is expressed as IOB value = inorganic value / organic value. For each of the "inorganic value" and "organic value," for example, one carbon atom in a molecule has an "organic value" of 20, and one hydroxyl group has an "inorganic value" of 100. These values ​​are assigned according to the type of atom or functional group, and the IOB value of an organic compound can be calculated by summing the "inorganic value" and "organic value" of all atoms and functional groups in the organic compound (see, for example, Yoshio Koda, "Organic Concept Diagram - Fundamentals and Applications," pp. 11-17, Sankyo Publishing, 1984).

[0024] Specifically, as ester oils, isopropyl myristate, cetyl ethylhexanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glyceryl di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, glyceryl triisostearate, pentaerythrityl tetraethylhexanoate, triethylhexyl Sanoin (glyceryl tri-2-ethylhexanoate), cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, glyceride tri-2-heptylundecanoate, methyl castor oil fatty acid ester, oleyl oleate, cetostearyl alcohol, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl Examples of such substances include, but are not limited to, syl, di-heptylundecyl adipate, ethyl laurate, di-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, polypropylene glycol dipivalate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, and other triester oils.

[0025] Examples of UV absorbers include, but are not limited to, polar oils such as benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, β,β-diphenylacrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranyl derivatives, imidazoline derivatives, benzalmalonate derivatives, and 4,4-diarylbutadiene derivatives.

[0026] Examples of fatty acids include, but are not limited to, oleic acid, isostearic acid, linoleic acid, and linolenic acid.

[0027] Examples of oils and fats include, but are not limited to, cocoa butter, avocado oil, camellia oil, macadamia nut oil, corn oil, olive oil, rapeseed oil, sesame oil, peach kernel oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, elm oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnamon oil, Japanese tuni oil, jojoba oil, wheat germ oil, triglycerin, glyceryl trioctanoate, and glyceryl triisopalmitate.

[0028] These oils may be used individually or in combination of two or more types.

[0029] In the composition of the present invention, the oil content is not particularly limited and may be, for example, 10% by mass or more, 15% by mass or more, 20% by mass or more, or 25% by mass or more, or 50% by mass or less, 40% by mass or less, or 30% by mass or less.

[0030] The oil phase according to the present invention contains the following components (A) to (C): (A) silicone elastomer, (B) hydrophobized silica particles, and (C) coating agent.

[0031] (Component (A) Silicone Elastomer) The composition of the present invention contains (A) silicone elastomer in the oil phase. A silicone elastomer refers to a crosslinked polymer in which silicone polymers are linked in a three-dimensional network. Generally, silicone elastomers can provide cosmetic compositions with water resistance and color transfer suppression effects, as well as effects such as elasticity and a matte appearance. Furthermore, silicone elastomers and silicone oils can be distinguished, for example, by the presence or absence of a crosslinked structure by covalent bonds. That is, in the present invention, silicone polymers having a crosslinked structure by covalent bonds are classified as silicone elastomers, and silicone polymers not having a crosslinked structure by covalent bonds may be classified as silicone oils. The composition of the present invention can be used in combination with (B) hydrophobized silica particles and (C) a coating agent, which will be described later, to obtain a fit and a unique cushioning feel.

[0032] In the composition of the present invention, specific examples of silicone elastomers are not particularly limited and may include, for example, at least one selected from the group consisting of dimethicone crosspolymer, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / (PEG-10 / 15)) crosspolymer, (dimethicone / polyglycerin-3) crosspolymer, (dimethicone / phenylvinyl dimethicone) crosspolymer, (vinyl dimethicone / lauryl dimethicone) crosspolymer, lauryl polydimethylsiloxyethyl dimethicone / bis-vinyl dimethicone crosspolymer, alkyl (C30-45) cetearyl dimethicone crosspolymer, and cetearyl dimethicone crosspolymer. Of these, in the composition of the present invention, the silicone elastomer preferably includes at least one selected from the group consisting of, for example, dimethicone crosspolymer, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenylvinyl dimethicone) crosspolymer, (dimethicone / (PEG-10 / 15)) crosspolymer, and (dimethicone / polyglycerin-3) crosspolymer. Alternatively, a commercially available silicone elastomer may be used.

[0033] In the composition of the present invention, the content of component (A) (i.e., the content of the silicone elastomer) is not particularly limited and may be adjusted as follows, for example.

[0034] In other words, the content of component (A) relative to the total amount of the composition of the present invention is, for example, 0.25% by mass or more, 0.50% by mass or more, 0.70% by mass or more, 1.00% by mass or more, 1.20% by mass or more, 1.50% by mass or more, 1.70% by mass or more, 2.00% by mass or more, 2.20% by mass or more, 2.50% by mass or more, 2.70% by mass or more, 3.00% by mass or more, 3.20% by mass or more, and 3.50% by mass It may be % or more, 3.70% by mass or more, 4.00% by mass or more, 4.20% by mass or more, or 4.50% by mass or more, and it may also be 5.0% by mass or less, 4.90% by mass or less, 4.70% by mass or less, 4.50% by mass or less, 4.40% by mass or less, 4.20% by mass or less, 4.00% by mass or less, 3.70% by mass or less, 3.50% by mass or less, 3.20% by mass or less, or 3.00% by mass or less.

[0035] Furthermore, in the composition of the present invention, the content of component (A) with respect to 100 parts by mass of component (B), described later, may be, for example, 30 parts by mass or more, 40 parts by mass or more, 50 parts by mass or more, 60 parts by mass or more, 70 parts by mass or more, 80 parts by mass or more, 90 parts by mass or more, 100 parts by mass or more, 110 parts by mass or more, 120 parts by mass or more, 130 parts by mass or more, 140 parts by mass or more, 150 parts by mass or more, or 160 parts by mass or more, or 350 parts by mass or less, 300 parts by mass or less, 250 parts by mass or less, 200 parts by mass or less, or 180 parts by mass or less.

[0036] In the composition of the present invention, from the viewpoint of further improving the dispersibility and stability of the silicone elastomer, the silicone elastomer may be blended into the oil phase in the form of a swollen product swollen with a liquid oil at room temperature (25°C). Here, the liquid oil used for swelling is not particularly limited, and examples include liquid silicone oil, liquid hydrocarbon oil, liquid ester oil, liquid higher fatty acid, etc. In particular, a liquid oil with low viscosity at room temperature, for example, 100 mPa·s or less, is preferred. The preferred viscosity range may be 1 to 100 mPa·s. The ratio of the silicone elastomer to the liquid oil mixture may be 5:95 to 40:60 by mass ratio. Furthermore, commercially available liquid oil swollen products of silicone elastomer may be used.

[0037] (Component (B) Hydrophobically Treated Silica Particles) The composition of the present invention contains (B) hydrophobically treated silica particles in the oil phase. Hydrophobically treated silica particles refer to silica particles whose surface has been treated to impart hydrophobicity. In this invention, "hydrophobic" refers to a property of having low affinity for water. The hydrophobic performance can be evaluated, for example, by placing 50 g of deionized water and 0.1 g of the evaluation powder in a transparent sealed container, storing it at 50°C for one day, and then observing it visually. Specifically, if the majority of the evaluation powder (for example, 50% or more of the evaluation powder) is present near the surface of the deionized water (for example, in the area approximately 1 cm below the water surface), the powder can be evaluated as "hydrophobic". Also, if the specific gravity of the powder to be evaluated is high (for example, a specific gravity of 3.0 g / cm³) ３ Over 5.0 g / cm ３ In the above cases, "hydrophobicity" can also be evaluated by the following method instead of the evaluation method described above. For example, when deionized water is dropped onto a container filled with powder in an atmosphere of 25°C, if the water forms droplets that roll around on the surface, it can be evaluated as "hydrophobic." The composition of the present invention can be made to have a good fit and a unique cushioning feel by using hydrophobic silica particles in combination with (A) a silicone elastomer and (C) a coating agent described later.

[0038] In the composition of the present invention, the average particle diameter of the hydrophobic silica particles as component (B) is 1.0 to 10 μm. More specifically, the average particle diameter of the hydrophobic silica particles may be 1.0 μm or more, 1.5 μm or more, 2.0 μm or more, 2.5 μm or more, 3.0 μm or more, 3.5 μm or more, 4.0 μm or more, 4.5 μm or more, or 5.0 μm or more, and may also be 10 μm or less, 9.5 μm or less, 9.0 μm or less, 8.5 μm or less, 8.0 μm or less, 7.5 μm or less, 7.0 μm or less, 6.5 μm or less, 6.0 μm or less, 5.5 μm or less, or 5.0 μm or less. In the present invention, the average particle diameter of the hydrophobic silica particles refers to the average particle diameter of its primary particles. Furthermore, the average particle diameter can be calculated as the projected area circle equivalent diameter of primary particles observed by a scanning electron microscope (SEM). The area circle equivalent particle diameter can also be defined as the average value of 10 or more particles.

[0039] In the composition of the present invention, the shape of the hydrophobic silica particles as component (B) is not particularly limited and may be, for example, spherical, and more specifically, may be perfectly spherical, substantially spherical, or ellipsoidal.

[0040] In the composition of the present invention, the hydrophobic silica particles are not particularly limited and may be silica particles surface-treated with a silicone-based treatment agent such as dimethicone or amodimethicone. More specifically, the hydrophobic silica particles may include at least one type of hydrophobic silica particle selected from the group consisting of dimethicone-treated silica particles and amodimethicone-treated silica particles. Furthermore, commercially available hydrophobic silica powder may be used.

[0041] In the composition of the present invention, the content of component (B) (i.e., the content of hydrophobized silica particles) is not particularly limited and may be adjusted as follows, for example.

[0042] That is, with respect to the total amount of the composition of the present invention, the content of component (B) may be, for example, 0.5% by mass or more, 1.0% by mass or more, 1.2% by mass or more, 1.5% by mass or more, 2.0% by mass or more, 2.5% by mass or more, 3.0% by mass or more, 3.5% by mass or more, 4.0% by mass or more, or 4.5% by mass or more, and may also be 5.0% by mass or less, 4.5% by mass or less, 4.0% by mass or less, or 3.5% by mass or less.

[0043] (Component (C) Film-forming agent) The composition of the present invention contains a (C) film-forming agent in the oil phase. A cosmetic containing a film-forming agent (also referred to as a "coating agent") can usually form a thin film (film) on the skin surface by application. The composition of the present invention can obtain a fitting feeling and a unique cushion feeling by using the film-forming agent in combination with the above-mentioned (A) silicone elastomer and (B) hydrophobically treated silica particles.

[0044] In the composition of the present invention, the film-forming agent as component (C) is not particularly limited, and may include, for example, a silicone-based film-forming agent. The silicone-based film-forming agent refers to a film-forming agent mainly composed of silicone. In the present invention, among the above-mentioned component (A) silicone elastomers, those "that can form a thin film (film) on the skin surface when dried by normal application" may be classified as silicone-based film-forming agents.

[0045] In the present invention, the silicone-based film-forming agent is not particularly limited, and may include, for example, at least one selected from the group consisting of trimethylsiloxysilicic acid, polymethylsilsesquioxane, (trimethylsiloxysilicic acid / dimethiconol) copolymer, and trifluoroalkyldimethyltrimethylsiloxysilicic acid. As the silicone-based film-forming agent, commercially available products may be used.

[0046] In the composition of the present invention, the content of component (C) (that is, the content of hydrophobically treated silica particles) is not particularly limited, and may be adjusted, for example, as follows.

[0047] That is, with respect to the total amount of the composition of the present invention, the content of component (C) may be, for example, 1.0% by mass or more, 1.5% by mass or more, 2.0% by mass or more, 2.5% by mass or more, 3.0% by mass or more, 3.5% by mass or more, 4.0% by mass or more, 4.5% by mass or more, 5.0% by mass or more, 5.5% by mass or more, 6.0% by mass or more, 6.5% by mass or more, 7.0% by mass or more, 7.5% by mass or more, or 8.0% by mass or more, and may also be 8.5% by mass or less, 8.0% by mass or less, 7.0% by mass or less, 6.0% by mass or less, 5.0% by mass or less, 4.0% by mass or less, or 3.0% by mass or less.

[0048] [Aqueous phase] Since the composition of the present invention is a water-in-oil emulsion composition, it contains an aqueous phase (also referred to as an "inner phase").

[0049] In the composition of the present invention, the content of the aqueous phase is not particularly limited. For example, from the viewpoint of further improving the stability of the preparation, with respect to the whole composition, the aqueous phase may be 60% by mass or less, 55% by mass or less, 50% by mass or less, 49% by mass or less, 58% by mass or less, 47% by mass or less, 46% by mass or less, 45% by mass or less, 44% by mass or less, 43% by mass or less, 42% by mass or less, 41% by mass or less, 40% by mass or less, 39% by mass or less, 38% by mass or less, 37% by mass or less, 36% by mass or less, or 35% by mass or less. Also, the content of the aqueous phase is not particularly limited and may be, for example, 20% by mass or more, 22% by mass or more, 25% by mass or more, 28% by mass or more, or 30% by mass or more.

[0050] In the present invention, the components contained in the aqueous phase are not particularly limited and may include, for example, water. [[ID=Y]]

[0051] There is no particular limitation on the water, and it may be, for example, water used in cosmetics and quasi-drugs. For example, ion-exchanged water, distilled water, ultrapure water, and tap water can be used.

[0052] [[ID=X]] In the composition of the present invention, when water is included, its content is not particularly limited and may be, for example, 5.0% by mass or more, 10% by mass or more, 12% by mass or more, or 15% by mass or more with respect to the whole composition, and may also be 40% by mass or less, 35% by mass or less, 30% by mass or less, 25% by mass or less, or 20% by mass or less.

[0053] [Other Components] In addition to components (A) to (C) described above, the composition of the present invention may further contain other components as long as they do not impair the effects of the present invention. The other components to be blended may be appropriately blended into the oil phase or aqueous phase according to their properties.

[0054] The following describes other components as examples, but the compositions of the present invention are not limited to these other components.

[0055] (Component (D) Colorant) The composition of the present invention may further contain (D) a colorant. In particular, when the composition of the present invention is used in makeup cosmetics, it is preferable to include a colorant.

[0056] In the present invention, the colorant (also referred to as "pigment") is not particularly limited and includes, but is not limited to, inorganic pigment powders (including natural mineral pigments or synthetic inorganic pigments, etc.), organic dyes, and organic pigment particles.

[0057] More specifically, examples of inorganic pigments include, but are not limited to, titanium dioxide, yellow iron oxide, red iron oxide, black iron oxide, talc, zinc oxide, silicon dioxide, pearl mica, mica, carbon black, red iron oxide, cerium oxide, manganese violet, cobalt violet, chromium oxide, chromium hydroxide, cobalt titanate, ultramarine, Prussian blue, magnesium oxide, zirconium oxide, kaolin, sericite, muscovite, phlogopite, synthetic mica, red mica, biotite, vermiculite, silica, calcium carbonate, magnesium carbonate, magnesium silicate, aluminum silicate, barium silicate, calcium silicate, barium sulfate, calcium sulfate, calcium phosphate, hydroxyapatite, boron nitride, pearl pigments, and bismuth oxychloride.

[0058] Examples of organic dyes include, but are not limited to, Red No. 3, Red No. 10, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Yellow No. 205, Yellow No. 401, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 205, Orange No. 206, Orange No. 207, Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 404, Green No. 3, Green No. 201, Green No. 204, and Green No. 205.

[0059] Examples of organic pigment powders include, but are not limited to, tar pigments, nylon powder, cellulose powder, polyethylene powder, polymethyl methacrylate powder, polystyrene powder, acrylic powder, and silicone powder.

[0060] Furthermore, these colorants can be used individually or in combination.

[0061] In the present invention, any colorant may be used, regardless of its shape (spherical, rod-shaped, needle-shaped, plate-shaped, irregular shape, flake-shaped, spindle-shaped, etc.), particle size (fuzzy, fine particles, pigment-grade, etc.), or particle structure (porous, non-porous, etc.).

[0062] Furthermore, the colorant may be surface-treated. The surface treatment agent for the colorant is not particularly limited and includes, for example, higher fatty acids, metal soaps, oils and fats, waxes, silicone compounds (e.g., carboxydecyltrisiloxane, dimethicone, acrylic-silicone graft copolymers), fluorine compounds, hydrocarbons, surfactants other than the silicone-based surfactants described later, dextrin fatty acid esters (e.g., dextrin palmitate), polyglycerin fatty acid esters (e.g., polyglyceryl-2 tetraisostearate), amino acids (lauroyl lysine), distearyldimonium chloride, and distearyldimonium chloride. Here, higher fatty acids can refer to saturated or unsaturated fatty acids with six or more carbon atoms, specifically myristic acid, stearic acid, etc. The surface treatment agent can be used alone or in combination of two or more.

[0063] In the present invention, the metal soap treatment agent is also referred to as a "metal salt of a fatty acid." Here, the fatty acid that forms the metal soap treatment agent is preferably a fatty acid with 12 or more carbon atoms. The upper limit of the number of carbon atoms in the fatty acid is not particularly limited and may be, for example, 32 or less, 24 or less, or 18 or less. Furthermore, the metal salt of the fatty acid is not particularly limited and may be, for example, a salt of calcium, aluminum, or magnesium. More specifically, examples of metal soap treatment agents include, but are not limited to, calcium stearate, aluminum dimyristate, and magnesium stearate.

[0064] In the present invention, an amino acid-based treatment agent refers to a surface treatment agent using an amino acid or a salt of an amino acid. The amino acid may also include amino acids with acylated amino groups. Specifically, examples of amino acids used in the amino acid-based treatment agent include, but are not limited to, glutamic acid, aspartic acid, and lysine. The acylated amino acid may be, for example, an amino acid acylated with a saturated fatty acid formed by the condensation of saturated fatty acids having 12 to 20 carbon atoms. Specific examples of acyl groups include, but are not limited to, stearoyl groups and lauroyl groups. Examples of amino acid salts (including salts of acylated amino acids) include, but are not limited to, alkali metal salts such as sodium and potassium, and alkaline earth metal salts. More specifically, examples of amino acid-based treatment agents include, but are not limited to, dilauroyl glutamate lysine sodium and stearoyl glutamate disodium.

[0065] In the composition of the present invention, the amount of colorant included is not particularly limited and may be, for example, 0.5% by mass or more, 1.0% by mass or more, 1.5% by mass or more, 2.0% by mass or more, 2.5% by mass or more, 3.0% by mass or more, 3.5% by mass or more, 4.0% by mass or more, 4.5% by mass or more, or 5.0% by mass or more relative to the whole composition, or it may be 20% by mass or less, 18% by mass or less, 16% by mass or less, 14% by mass or less, 12% by mass or less, 10% by mass or less, 8.0% by mass or less, or 6.0% by mass or less.

[0066] (Surfactants) The compositions of the present invention may further contain surfactants.

[0067] The surfactant is not particularly limited, and for example, cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants, etc., may be used as appropriate.

[0068] Surfactant components can function as emulsifiers and gelling agents, improving the stability of water-in-oil formulations. Examples of surfactants include, but are not limited to, silicone-based surfactants such as PEG-10 dimethicone and bis-butyl dimethicone polyglyceryl-3, nonionic surfactants such as sorbitan sesquiisostearate, or liquid carboxylic acids (including fatty acids) that can function as emulsifiers or dispersants such as isostearic acid.

[0069] In the composition of the present invention, the amount of surfactant present is not particularly limited, and may be 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1.0% by mass or more, 2.0% by mass or more, 3.0% by mass or more, 4.0% by mass or more, 5.0% by mass or more, 6.0% by mass or more, 7.0% by mass or more, or 8.0% by mass or more, relative to the whole composition, or it may be 15% by mass or less, or 10% by mass or less.

[0070] (Humidifier) ​​The composition of the present invention may further contain a humectant.

[0071] The humectants used are generally those commonly used in cosmetics and are not particularly limited. Examples of humectants include, but are not limited to, sucrose, sorbitol, glycerin, 1,3-butylene glycol, propylene glycol, and dipropylene glycol.

[0072] In the composition of the present invention, the amount of a humectant, if present, is not particularly limited. For example, it may be 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1.0% by mass or more, or 5.0% by mass or more relative to the whole composition. It may also be 15% by mass or less, 10% by mass or less, 5.0% by mass or less, 4.5% by mass or less, 4.0% by mass or less, 3.5% by mass or less, 3.0% by mass or less, 2.5% by mass or less, 2.0% by mass or less, 1.5% by mass or less, or 1.0% by mass or less.

[0073] (Thickening agent) The composition of the present invention may further contain a thickening agent.

[0074] The thickening agent is not particularly limited and includes, for example, dextrin fatty acid esters, organically modified clay minerals, plant-derived polymers, microbial polymers, natural water-soluble polymers, semi-synthetic water-soluble polymers, and synthetic water-soluble polymers.

[0075] The dextrin fatty acid ester may be, for example, an ester compound of a fatty acid having 8 to 24 carbon atoms and dextrin with an average degree of polymerization of 10 to 50. More specifically, examples of dextrin fatty acid esters include, but are not limited to, dextrin palmitate, dextrin stearate, dextrin palmitate stearate, dextrin isostearate, and (palmitic acid / 2-ethylhexanoic acid) dextrin.

[0076] Organically modified clay minerals are obtained by treating natural or synthetic montmorillonite groups such as montmorillonite, saponite, and hectorite (commercially available products include Beegum, Knipia, and Laponite) and synthetic mica known as sodium silicate mica or sodium or lithium teniolite with quaternary ammonium salt type cationic surfactants. More specifically, examples of organically modified clay minerals include, but are not limited to, disteardimonium hectorite, dimethylalkylammonium hectorite, and distearyldimethylammonium chloride-treated aluminum magnesium silicate.

[0077] Examples of plant-derived polymers include, but are not limited to, arabia gum, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, starch, and glycyrrhizic acid.

[0078] Examples of microbial polymers include, but are not limited to, xanthan gum, dextran, succinoglucan, and pullulan.

[0079] Examples of natural water-soluble polymers include, but are not limited to, collagen, casein, albumin, and gelatin.

[0080] Examples of semi-synthetic water-soluble polymers include, but are not limited to, starch-based polymers, cellulose-based polymers, and alginate-based polymers.

[0081] Examples of synthetic water-soluble polymers include, but are not limited to, vinyl polymers, polyoxyethylene polymers, polyoxyethylene polyoxypropylene copolymer polymers, acrylic polymers, polyethyleneimines, and cationic polymers.

[0082] In the composition of the present invention, the amount of a thickening agent, if present, is not particularly limited. For example, it may be 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1.0% by mass or more, 5.0% by mass or more, 10% by mass or more, or 15% by mass or more relative to the whole composition, or it may be 30% by mass or less, 25% by mass or less, 20% by mass or less, or 15% by mass or less.

[0083] (Ultraviolet scattering agent) The composition of the present invention may further contain an ultraviolet scattering agent. The ultraviolet scattering agent has the effect of scattering or blocking ultraviolet rays.

[0084] Examples of ultraviolet scattering agents include, but are not limited to, titanium dioxide, zinc oxide, cerium oxide, or powders containing mixtures thereof. Furthermore, the titanium dioxide and zinc oxide may be fine particles having a particle size of, for example, 10 to 50 nm. In addition, the titanium dioxide and zinc oxide may be surface-treated. Examples of surface treatments include, but are not limited to, fatty acid treatment and fatty acid ester treatment.

[0085] In the composition of the present invention, if an ultraviolet scattering agent is included, its content may be, for example, 1.0% by mass or more, 2.0% by mass or more, 3.0% by mass or more, 4.0% by mass or more, 5.0% by mass or more, 6.0% by mass or more, 7.0% by mass or more, or 8.0% by mass or more, relative to the total amount of the composition, or it may be 25% by mass or less, 20% by mass or less, 15% by mass or less, or 10% by mass or less.

[0086] (Other optional ingredients) In addition to the above, the chemical composition of the present invention may further contain ingredients that can be used in ordinary cosmetics, such as preservatives, pH adjusters, fragrances, blood circulation promoters, cooling agents, antiperspirants, disinfectants, pharmaceuticals, or skin activators.

[0087] <Form> The form of the composition of the present invention is not particularly limited and may be, for example, liquid. In this invention, "liquid" means, for example, a state in which it can flow by its own weight at 25°C.

[0088] Therefore, the viscosity of the composition of the present invention may be, for example, 30,000 mPa·s or less, 20,000 mPa·s or less, 10,000 mPa·s or less, or 8,000 mPa·s or less from the viewpoint of improving spreadability and ease of application, and may be 100 mPa·s or more from the viewpoint of suppressing dripping during application. In the present invention, the viscosity may be measured, for example, using a BL type viscometer (VS-A type, manufactured by Shibaura Systems Co., Ltd., 30°C) with rotor No. 3 under measurement conditions of 12 rpm for 1 minute.

[0089] <Manufacturing Method> The method for manufacturing the composition of the present invention is not particularly limited, and for example, a conventional method for preparing water-in-oil cosmetic compositions may be used. For example, components (A) to (C) are added to an oil at a predetermined temperature (e.g., 25°C) and dispersed. Then, an aqueous phase component (water and optionally added water-soluble components) is added and stirred to obtain a water-in-oil emulsion cosmetic composition.

[0090] <Applications> The composition of the present invention has a comfortable fit and a unique cushioning sensation when applied, and can therefore be used as a cosmetic (especially a makeup cosmetic) or as a raw material for the same.

[0091] Therefore, the present invention can provide a makeup cosmetic comprising the composition of the present invention.

[0092] Makeup cosmetics include, but are not limited to, foundation, makeup base (or primer), concealer, and blush.

[0093] Furthermore, the form of the makeup cosmetic according to the present invention is not particularly limited and may be liquid, and more specifically, examples include liquid and cream forms, but is not limited to these.

[0094] The present invention will be explained in more detail below with reference to examples, but the present invention is not limited to these examples. Unless otherwise specified, the amounts of the ingredients are expressed in mass percent.

[0095] Examples 1-15 and Comparative Examples 1-6 Based on the formulations in Tables 1-3, water-in-oil cosmetic compositions (liquid) for Examples 1-15 and Comparative Examples 1-6 were prepared.

[0096] For each of the obtained compositions, the usability was evaluated based on the following criteria for "fit" and "cushion" when applied. The evaluation results are shown in Tables 1 and 2, respectively.

[0097] <Fit> A panel of three experts evaluated the "fit" of each composition when applied. Specifically, after applying each composition to the panel's face, the three experts made a consensus (overall evaluation) and evaluated it as follows: "A": Rated as "Excellent"; "B": Rated as "Good"; "C": Rated as "Somewhat good"; "D": Rated as "No fit".

[0098] <Cushioning (Bounce) Sensitivity> A panel of three experts evaluated the "cushioning (bounce) sensitivity" of each composition after application. Specifically, after applying each composition to the panel's face, the three experts made a consensus (overall evaluation) and evaluated it as follows: "A": Rated as "Excellent"; "B": Rated as "Good"; "C": Rated as "Somewhat Good"; "D": Rated as "No cushioning sensation".

[0099]

[0100]

[0101]

[0102]

[0103] As is clear from the results in Tables 1 to 3, the compositions of Examples 1 to 15 all showed superior fit and unique cushioning when applied compared to the compositions of Comparative Examples 1 to 6.

[0104] 《Formulation Examples》 The following are illustrative examples of formulations of the composition of the present invention. However, the present invention is not limited in any way by the following formulation examples.

[0105] Prescription Example 1

[0106] Prescription example 2

Claims

1. An oil-in-oil emulsion cosmetic composition comprising the following components (A) to (C) in the oil phase: (A) a silicone elastomer, (B) hydrophobized silica particles, and (C) a film-forming agent, wherein the average particle size of component (B) is 1.0 to 10 μm.

2. The composition according to claim 1, wherein the content of component (A) is 30 to 350 parts by mass per 100 parts by mass of component (B).

3. The composition according to claim 1, wherein the content of component (C) is 1.0 to 8.5% by mass.

4. The composition according to claim 1, wherein the content of component (A) is 0.25 to 5.0% by mass.

5. The composition according to claim 1, wherein the content of component (B) is 0.5 to 5.0% by mass.

6. The composition according to claim 1, wherein component (B) comprises at least one hydrophobic silica particle selected from the group consisting of dimethicone-treated silica particles and amodimethicone-treated silica particles.

7. The composition according to claim 1, wherein component (C) comprises a silicone-based coating agent.

8. The composition according to claim 7, wherein the silicone coating agent comprises at least one selected from the group consisting of trimethylsiloxysilicate, polymethylsilsesquioxane, (trimethylsiloxysilicate / dimethiconol) crosspolymer, and trifluoroalkyldimethyltrimethylsiloxysilicate.

9. (D) The composition according to claim 1, further comprising a colorant.

10. A makeup cosmetic comprising the composition described in any one of claims 1 to 9.

11. The makeup cosmetic composition according to claim 10, which is in liquid form.

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