Oil-based emulsions in water

Abstract

To provide an oil-in-water emulsion composition which has a matte appearance, can impart a natural matte effect to the skin even after use, and at the same time makes the user feel that it is quickly absorbed without giving a sticky feeling. [Solution] The oil-in-water emulsion composition of the present invention comprises (A) an aqueous phase, (B) an oil phase, (C) a polyoxyalkylene-modified silicone, and (D) a thickener, wherein the (A) aqueous phase contains a diol, and the diol content is 1 to 20 mass% relative to the total composition; the (B) oil phase content is 1 to 50 mass% relative to the total composition; the (C) polyoxyalkylene-modified silicone content is 0.2 to 2.5 mass% relative to the total composition; and the (D) thickener is at least one selected from the group consisting of sodium polyacrylate-grafted starch and acrylates crosspolymer-2-Na, and the content of the (D) thickener is 0.5 to 5 mass% relative to the total composition.

Description

[Technical Field]

[0001] The present invention relates to the field of cosmetics, and more particularly to an oil-in-water emulsion composition that can be used in cosmetics. [Background technology]

[0002] Oil-in-water emulsion compositions are widely used in the cosmetics field. For example, Patent Document 1 (CN115243659) discloses an oil-in-water emulsion composition comprising (A) an aqueous phase, (B) an oil phase, and (C) a polyoxyalkylene-modified silicone, wherein the (A) aqueous phase contains a monohydric alcohol and a dihydric glycol in a total amount of 1 to 35% by mass, the monohydric alcohol alone is 1 to 15% by mass, and the dihydric glycol alone is 1 to 20% by mass, the (B) oil phase is 1 to 50% by mass, and the (C) polyoxyalkylene-modified silicone is 0.2 to 5% by mass relative to the total composition. This oil-in-water emulsion composition has excellent emulsion stability.

[0003] In the cosmetics industry, product experience has always been one of the focal points of consumer attention. As consumer demands for cosmetics continue to increase, the uniformity of traditional cosmetics in terms of texture, appearance, and efficacy is finding it difficult to meet market demand. In particular, modern urban dwellers are seeking products that can impart natural beauty to the skin while also providing a pleasurable user experience. Against this background, the demands for cosmetic experience are becoming more sophisticated and diversified day by day, including but not limited to product texture, absorption, refreshing feeling, and visual uniqueness.

[0004] Specifically, consumers tend to choose cosmetics that can be quickly absorbed into the skin after application, do not leave a sticky feeling, and can impart a natural matte or special texture to the skin. Such products can not only effectively improve the appearance of the skin, but also improve comfort and satisfaction during use. Therefore, it is extremely important to develop new cosmetic compositions that meet modern aesthetic trends and satisfy consumers' high demands for usability. Summary of the Invention [Problem to be solved by the invention]

[0005] The oil-in-water emulsion composition disclosed in Patent Document 1 has good emulsion stability, but does not have a matte appearance and is unable to impart a natural matte effect to the skin even after use. Furthermore, there is room for improvement in terms of feel during use.

[0006] Therefore, an object of the present application is to provide an oil-in-water emulsion composition that has a matte appearance and can impart a natural matte effect to the skin even after use, while also providing the user with a feeling of rapid absorption without a sticky feeling. [Means for solving the problem]

[0007] As a result of repeated research, the inventors have found that by adding a specific thickener to a specific oil-in-water emulsion system, the emulsion system can take on a matte appearance similar to that of mashed potatoes, and after application to the skin, a natural matte feel can be imparted; after use of the oil-in-water emulsion composition of the present application, a feeling of rapid absorption and a clear feeling of phase inversion can be felt; and further, by adding a specific oil-absorbing powder to the emulsion system, the user does not feel a sticky feeling.

[0008] Specifically, the present invention has the following technical configuration.

[0009] [1] An oil-in-water emulsion composition comprising (A) an aqueous phase, (B) an oil phase, (C) a polyoxyalkylene-modified silicone, and (D) a thickener, The (A) aqueous phase contains a diol, the content of the diol is 1 to 20 mass% based on the total mass of the composition; the content of the (B) oil phase is 1 to 50 mass% relative to the total mass of the composition; the content of the (C) polyoxyalkylene-modified silicone is 0.2 to 2.5% by mass relative to the total mass of the composition; An oil-in-water emulsion composition, wherein the thickener (D) is at least one selected from the group consisting of sodium polyacrylate-grafted starch and acrylates crosspolymer-2-Na, and the content of the thickener (D) is 0.5 to 5 mass% of the total composition. [2] An oil-in-water emulsion composition comprising (A) an aqueous phase, (B) an oil phase, (C) a polyoxyalkylene-modified silicone, (D) a thickener, and (E) an oil-absorbing powder, The (A) aqueous phase contains a diol, the content of the diol is 1 to 20 mass% based on the total mass of the composition; the content of the (B) oil phase is 1 to 50 mass% relative to the total mass of the composition; the content of the (C) polyoxyalkylene-modified silicone is 0.2 to 2.5% by mass relative to the total mass of the composition; An oil-in-water emulsion composition, wherein the thickener (D) is a thickener that forms a spherical or lumpy structure within the system after swelling, and the content of the thickener (D) is 0.5 to 5 mass% relative to the total mass of the composition. [3] The oil-in-water emulsion composition according to [2], wherein the thickener (D) is selected from carbomer Na. [4] The oil-in-water emulsion composition according to [1], characterized in that the composition further contains (E) an oil-absorbing powder. [5] The oil-in-water emulsion composition according to any one of [2] to [4], wherein the oil-absorbing powder (E) is at least one selected from the group consisting of silica and starch aluminum octenyl succinate. [6] The oil-in-water emulsion composition according to any one of [2] to [4], wherein the content of the oil-absorbing powder (E) is 0.1 to 3 mass % relative to the total mass of the composition. [7] The oil-in-water emulsion composition according to any one of [1] to [6], wherein the component (C) is PEG-12 dimethicone. [8] The oil-in-water emulsion composition according to [7], wherein the PEG-12 dimethicone does not dissolve in water and precipitates at a concentration of 5 to 20% by mass. [9] The oil-in-water emulsion composition according to [7], wherein the PEG-12 dimethicone has an HLB value of less than 10 as calculated by the Griffin equation.

[10] The oil-in-water emulsion composition according to any one of [1] to [9], further comprising at least one ionic surfactant (F) selected from the group consisting of sulfosuccinic acid diester salts, alkyl aryl sulfonates, alkyl ether sulfonates, sulfosuccinic acid ester salts, acyl methyl taurine salts, and acyltaurine salts.

[11] The oil-in-water emulsion composition according to

[10] , wherein the (F) ionic surfactant is an N-stearoyl-N-methyl taurine salt.

[12] The oil-in-water emulsion composition according to

[10] or

[11] , wherein the content of the ionic surfactant (F) is 0.01 to 1.0% by mass relative to the total mass of the composition.

[13] The oil-in-water emulsion composition according to any one of [1] to

[12] , characterized in that the composition further contains (G) an elastomer.

[14] The oil-in-water emulsion composition according to any one of [1] to

[12] , wherein the diol is dipropylene glycol.

[15] Use of the oil-in-water emulsion composition according to any one of [1] to

[14] in the production of cosmetics. [Effects of the Invention]

[0010] The oil-in-water emulsion composition of the present invention has a matte appearance similar to that of mashed potatoes, and after application to the skin, can impart a natural matte finish to the skin. After using the oil-in-water emulsion composition of the present invention, the user feels a sense of rapid absorption and a distinct phase inversion, without feeling sticky. DETAILED DESCRIPTION OF THE INVENTION

[0011] The oil-in-water emulsion composition of the present application comprises (A) an aqueous phase, (B) an oil phase, (C) a polyoxyalkylene-modified silicone, and (D) a thickener, wherein the (A) aqueous phase contains a diol, the content of the diol is 1 to 20 mass% relative to the total composition, the content of the (B) oil phase is 1 to 50 mass% relative to the total composition, the content of the (C) polyoxyalkylene-modified silicone is 0.2 to 2.5 mass% relative to the total composition, and the (D) thickener is at least one selected from the group consisting of sodium polyacrylate-grafted starch and acrylates crosspolymer-2-Na, and the content of the (D) thickener is 0.5 to 5 mass% relative to the total composition.

[0012] The names of each ingredient in this application refer to the substances indicated by the names in the "Catalogue of Existing Cosmetic Raw Materials (2021 Edition)" published by the State Medical Products Administration.

[0013] In the present application, the addition of a specific thickener to a specific emulsion system allows the emulsion system to have a matte appearance similar to mashed potatoes. This is because this type of thickener, such as sodium polyacrylate-grafted starch, sodium carbomer, and acrylates crosspolymer-2-Na, forms a spherical or lumpy structure after swelling in the specific system, which causes light to be diffusely reflected rather than specularly on the surface of the composition, resulting in an overall matte appearance similar to mashed potatoes or ice cream. If the emulsion system or thickener is changed, a good matte appearance cannot be obtained, and the absorption, penetration, and phase inversion sensations during use may also be insufficient.

[0014] Furthermore, in the present application, by adding a specific oil-absorbing powder to the emulsion composition, the emulsion composition provides a matte effect to the skin even after use, and does not leave a sticky feeling on the skin.

[0015] Each component of the present invention will be described in detail below.

[0016] (A) Aqueous phase The aqueous phase contains a diol and water, and the diol is preferably dipropylene glycol or 1,3-butylene glycol. The content of the diol is preferably 1 to 20 mass% and more preferably 5 to 15 mass% relative to the total mass of the composition. If the diol content is too low, emulsification may not be possible, while if the diol content is too high, a stable emulsification effect cannot be obtained.

[0017] (B) Oil phase The oil component that can be blended into the oil phase is not particularly limited, but examples thereof include silicone oils (e.g., dimethylpolysiloxane, diphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, decamethylcyclohexasiloxane, amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.); hydrocarbon oils (e.g., liquid paraffin, ozokerite, squalane, petrolatum, microcrystalline wax, etc.); Oil (e.g., isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid esters, monoisostearin N-Alkyl Glycol Dicaprate, Neopentyl Glycol Dicaprate, Diisostearyl Malate, Glycerin Di-2-heptylundecanoate, Trimethylolpropane Tri-2-ethylhexanoate, Trimethylolpropane Triisostearate, Glycerin Trioctanoate, Glycerin Triisopalminate, Trimethylolpropane Triisostearate, Cetyl-2-ethylhexanoate, 2-Ethylhexyl Palmitate, Glycerin Trimyristate, Tri-2-heptylundecanoate Glyceride, Examples of suitable oleic acid esters include maize oil fatty acid methyl esters, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, di-2-heptylundecyl adipate, diisobutyl adipate, 2-octyldodecyl N-lauroyl-L-glutamate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

[0018] The content of the oil phase in the entire emulsion is preferably 1 to 50% by mass, more preferably 5 to 45% by mass, and even more preferably 10 to 20% by mass.

[0019] The content of silicone oil in the oil phase is preferably 50% by mass or less. If it exceeds 50% by mass, the emulsion particles may coalesce at high temperatures.

[0020] (C) Polyoxyalkylene-modified silicone (C) Polyoxyalkylene-modified silicone is a water-soluble silicone surfactant in which some of the methyl groups of dimethicone are replaced with polyethylene glycol. It has excellent emulsifying, dispersing, and penetrating properties and is widely used in the field of cosmetics. It is represented by the following general formula (1).

[0021] [ka] (In the formula, R 1 is hydrogen or an alkyl group having 1 to 6 carbon atoms, and at least one of A is a group represented by the formula: -(CH2) a -(C2H4O) b -(C3H6O) c -R 2 (In the formula, R 2 is a polyoxyalkylene group of the formula: a is an integer of 1 to 6, b is an integer of 0 to 50, c is an integer of 0 to 50, and b+c is at least 5), and the other A's are hydrogen or alkyl groups of 1 to 6 carbon atoms. m is an integer of 1 to 200, and n is an integer of 0 to 50.

[0022] Among the polyoxyalkylene-modified silicones of (C), PEG-12 dimethicone, in which c is 0 and b is 12 in general formula (1), is particularly preferred.

[0023] Commercially available PEG-12 dimethicone products include DOWSIL ES-5373 (manufactured by Dow-Toray Industries, Inc.), SH3772M, SH3773M, SH3775M (all manufactured by Dow-Toray Industries, Inc.), and IM-22 (manufactured by Wacker Chemical Co., Ltd.).

[0024] The content of component (C) in the entire composition is preferably 0.2 to 2.5 mass %, and more preferably 0.5 to 2.5 mass %.

[0025] (D) Thickener Specific thickeners (D) used in the present invention include, for example, sodium polyacrylate grafted starch, sodium carbomer, and acrylate crosspolymer-2-Na. These thickeners may be used alone or in combination of two or more.

[0026] The thickener (D) forms a spherical or lumpy structure after swelling in the specific emulsion system of the present invention, which causes diffuse reflection of light rather than specular reflection, resulting in a matte appearance resembling mashed potatoes or ice cream as a whole. The content of the thickener (D) is 0.5 to 5% by mass of the entire composition.

[0027] Furthermore, when the thickener (D) is used in an emulsion system other than the emulsion system of the present invention, a good matte appearance cannot be achieved, and the absorption, penetration, and phase inversion sensations during use are also insufficient.

[0028] (E) Oil-absorbing powder The oil-in-water emulsion composition of the present invention may further contain a specific oil-absorbing powder (E). By containing the specific oil-absorbing powder (E) in the emulsion composition, the sticky feeling of the composition can be further reduced and the matte effect on the skin after use can be enhanced.

[0029] The oil-absorbing powder (E) can be at least one selected from the group consisting of silica and starch aluminum octenyl succinate. The content of the oil-absorbing powder (E) is 0.1 to 3% by mass based on the total mass of the composition.

[0030] (F) Ionic surfactants The oil-in-water emulsion composition of the present invention may further contain (F) an ionic surfactant other than the above-mentioned component (C). When an ionic surfactant is added, the stability of the composition is improved.

[0031] The ionic surfactant used in the present invention is not particularly limited as long as it is a substance other than the silicone surfactant (C) above and exhibits ionic properties.

[0032] The blending amount of (F) ionic surfactant is preferably 0.01 to 1.0% by mass, more preferably 0.01 to 0.1% by mass, based on the total mass of the composition. By including an ionic surfactant, the stability of the composition can be further improved, but if the amount of ionic surfactant is too large, the stability of the composition may actually decrease.

[0033] The blending ratio of (C) polyoxyalkylene-modified silicone to ionic surfactant is preferably 1:0.01 to 1:0.1.

[0034] As the ionic surfactant (F) that can be blended in the present invention, among anionic surfactants, sulfonate-type anionic surfactants are preferred. Examples of sulfonate-type anionic surfactants include sulfosuccinate diester salts, alkylarylsulfonates, alkyl ether sulfonates, sulfosuccinate ester salts, acylmethyltaurine salts, and acyltaurine salts.

[0035] In the present invention, it is particularly preferable to use an N-acylmethyltaurine salt as the ionic surfactant. Furthermore, among the N-acylmethyltaurine salts represented by the following general formula (2), N-stearoyl-N-methyltaurine salt is preferred.

[0036] [ka]

[0037] (G) Silicone elastomer In the present invention, (G) a silicone elastomer may also be blended.

[0038] When silicone elastomers are added to compositions such as cosmetics, they can provide users with a smooth and elegant feel when used.

[0039] Examples of silicone elastomers include silicone elastomers (organopolysiloxanes). Silicone elastomers include, for example, cross-linked silicones (cross-linked organopolysiloxanes) in which silicone polymers are three-dimensionally cross-linked. The use of silicone elastomers can suppress stickiness and provide a smooth (smooth) feel when applied to the skin.

[0040] The silicone elastomer applicable to the composition of the present application is not particularly limited as long as it is applicable to the skin. Examples of silicone elastomers include dimethicone crosspolymer, dimethicone / vinyl dimethicone crosspolymer, dimethicone / phenylvinyl dimethicone crosspolymer, vinyl dimethicone / lauryl dimethicone crosspolymer, lauryl polydimethylsiloxyethyl dimethicone / bis-vinyl dimethicone crosspolymer, alkyl (C30-45) cetearyl dimethicone crosspolymer, cetearyl dimethicone crosspolymer, etc.

[0041] For example, commercially available silicone elastomers can be used. The commercially available product may be a mixture of a silicone elastomer and an oily component. The oily component contained in the commercially available product is not particularly limited as long as it is applicable to the skin. Examples of commercially available silicone elastomer-containing products include Gransil DMG-3 (Grant), which contains 12% by mass of polysilicone-11 as a silicone elastomer and 88% by mass of dimethicone as an oily component, as well as other products such as KSG-16 (Shin-Etsu Chemical Co., Ltd.) and Dow Corning® 9041 Silicone Elastomer Blend (Dow Corning Toray Co., Ltd.). The content of the silicone elastomer in the composition of the present invention is preferably 0.1% by mass or more, and more preferably 0.3% by mass or more, based on the total amount of the composition.

[0042] Other ingredients Various cosmetic additives such as pH adjusters, chelating agents, stabilizers, preservatives, and coloring agents may be added to the composition as long as they do not affect the effects of the present invention.

[0043] Glycerin can also be added to impart the "smoothness upon application" desired by consumers as a cosmetic product. Normally, a high content of glycerin results in a sticky feeling and poor usability. In the present invention, even with a high content of glycerin, a smooth feel can be achieved without stickiness.

[0044] The method for producing an oil-in-water emulsion composition according to the present invention comprises a vesicle-forming step of mixing (A) an aqueous phase with (C) a polyoxyalkylene-modified silicone to form vesicles, and may further comprise a step of adding an ionic surfactant to the vesicle-containing aqueous solution obtained by the above step.

[0045] In the method for producing an oil-in-water emulsion composition according to the present invention, first, (A) an aqueous phase and (C) a polyoxyalkylene-modified silicone are mixed to form vesicles, which are precursors of nanodiscs. Here, the aqueous phase (A) is not particularly limited as long as it is a formulation in which water and a diol are the main media, and in addition to water and a diol, ingredients typically used in cosmetics may be blended in amounts that do not impair the stability of the nanodiscs.

[0046] (C) Polyoxyalkylene-modified silicone is dissolved in advance in the diol, which is a component of the above-mentioned (A) aqueous phase, and then mixed with water, which is the remaining component of the (A) aqueous phase, to form vesicles, which are precursors of nanodisks made of polyoxyalkylene-modified silicone, in the aqueous phase.

[0047] When oil is added to an aqueous phase containing vesicles, which are the precursors of nanodiscs, and the mixture is stirred, the vesicles, which are the precursors of nanodiscs, are transferred to and adsorbed onto the nanodiscs at the oil-water interface, forming an emulsion system.

[0048] The oil-in-water emulsion composition of the present invention can be suitably used, for example, as a cosmetic. When used as a cosmetic, in addition to the above-mentioned essential components, ingredients typically used in pharmaceuticals and cosmetics can be blended in amounts that do not impair the stability. Furthermore, the nanodisk-containing composition can be blended with oils in amounts that cannot be blended with conventional solubilizers, yet the composition is less sticky and provides a refreshing feel when used.

[0049] The other formulation components may be blended in advance in the aqueous phase before vesicle formation, or may be blended in the formulation after vesicle formation.

[0050] The uses of the cosmetic according to the present invention are not particularly limited, but it can be suitably used as, for example, a lotion, a skin care serum, a milky lotion, a cream, a hair cream, a massage cream, a makeup remover cream, etc. [Example]

[0051] The present invention will be described in more detail below with reference to examples of the present invention, but the present invention is not limited to these. Unless otherwise specified, the blending amounts are expressed in mass %.

[0052] The raw materials used in the examples are as follows:

[0053] Moisturizer: Glycerin USP 99.5% (IOI OLEOCHEMICALS) Dipropylene glycol (Lyondell) butylene glycol Thickener: xanthan gum Carbomer Na AQUPEC MG N40R (Sumitomo Seika Chemicals Co., Ltd.) Polyacrylate sodium grafted starch MAKIMOUSSE 25 (Daito Kasei Kogyo Co., Ltd.) Acrylates Crosspolymer-2-Na ARON NT-Z (TOAGOSEI CO., LTD.) Carbopol 981 Polymer(Lubrizol Advanced Materials, Inc.) (Sodium acrylate / sodium acryloyldimethyltaurate) copolymer SIMULGEL EG QD (SEPPIC SA) Neutralizer: Sodium hydroxide, potassium hydroxide Activator: PEG-12 Dimethicone DOW CORNING ES-5373 FORMULATION AID (Dow Corning Toray Co., Ltd.) Sodium N-Stearoyl-N-Methyl Taurate NIKKOL SMT (Nikko Chemicals Co., Ltd.) Acrylates / C10-30 alkyl acrylate crosspolymer PEMULEN TR-2 (Lubrizol Advanced Materials, Inc.) PPG-13 Decyltetradeceth-24 S-Safe 1324D (NOF Corporation) Oil content: α-olefin polymer Glyceryl tri(2-ethylhexanoate) Dimethicone Chelating Agents: EDTA-2Na Stabilizers: Sodium pyrosulfite Powder: silica Starch octenyl succinate Al OCTIE (Nippon Starch Chemical Co., Ltd.) Synthetic fluorphlogopite PDM-5L (Topy Industries, Ltd.) Preservatives: Phenoxyethanol

[0054] [Test Example] Preparation of basic emulsion composition Ingredients such as moisturizers, thickeners, and surfactants were dissolved in ion-exchanged water according to the ingredients and proportions listed in Table 1, and then oil was added to the solution. The mixture was thoroughly stirred and emulsified to form an emulsion composition, and the appearance of the resulting emulsion composition was observed.

[0055] [Table 1]

[0056] It was found that the emulsion composition formed using the specific emulsification system and specific thickener of the present application exhibited a matte appearance, whereas the emulsion composition of the comparative test example, which did not use the specific thickener, exhibited a bright reflection.

[0057] Examples 1 to 3 and Comparative Examples 1 to 3 Cosmetic emulsion compositions were prepared according to the ingredients and proportions listed in Table 2, and their appearance and feel when applied to the skin were evaluated.

[0058] [Appearance evaluation] Observe the reflectance of the sample surface under a constant light source: ○: Matte and no reflection at all ○△: Overall matte finish with some reflection △: Overall matte finish with a small amount of localized reflection ×: Bright reflection

[0059] [Appearance after application to skin] 0.2g of sample was taken, applied to the face and gently massaged until completely absorbed. After absorption, the reflectivity of the skin surface was observed under a constant light source: ○: Matte and no reflection at all ○△: Overall matte finish with some reflection △: Overall matte finish with a small amount of localized reflection ×: Bright reflection

[0060] [Sticky feeling evaluation] Ten expert panelists each took 0.2g of the sample, applied it to their face, and gently massaged until it was completely absorbed. After absorption, they gently touched their face with their hands and classified the results based on the number of panelists who answered "no sticky feeling on the skin" as follows: ○:9~10 people ○△:7~8 people △:5~6 people △×: 3~4 people ×: 0~2 people

[0061] [Absorption evaluation] Ten expert panelists each took 0.2g of the sample, applied it to their face, and gently massaged until it was completely absorbed. After absorption, they gently touched their face with their hands, and the number of panelists who answered "I felt like the sample was being absorbed into my skin" was categorized as follows: ○:9~10 people ○△:7~8 people △:5~6 people △×: 3~4 people ×: 0~2 people

[0062] [Phase change sensation evaluation] Ten expert panelists each took 0.2g of the sample, applied it to their face, and gently massaged it until it was completely absorbed. The results were categorized according to the number of panelists who responded, "At some point during application, I felt the cream melt and moisture seep out." ○:9~10 people ○△:7~8 people △:5~6 people △×: 3~4 people ×: 0~2 people

[0063] [Table 2]

[0064] As is clear from Table 2, emulsion compositions using the specific thickeners of the present invention can maintain a matte appearance even after adding commonly used cosmetic additives, and can maintain a natural matte appearance on the skin after application without causing a shiny appearance. Furthermore, when using the emulsion compositions of the present invention, a clear feeling of absorption and phase change is felt, and there is no greasy feeling. In contrast, the compositions of Comparative Examples 1 to 3, which used other thickeners, exhibited a bright reflection, maintained a shiny appearance after application, and the feeling of absorption and phase change when using these compositions was lower than that of Examples 1 to 3.

[0065] Examples 4 and 5 and Comparative Example 4 Cosmetic emulsion compositions were prepared according to the ingredients and proportions shown in Table 3, and their appearance and feel when applied to the skin were evaluated.

[0066] [Table 3]

[0067] In Example 4, no oil-absorbing powder was added, and otherwise an emulsion composition was obtained in the same manner as in Example 1. Compared with Examples 1 and 5, Example 4 had a slightly increased sticky feeling and the matte feeling of the skin after use was weaker. However, in Comparative Example 4, which used a powder other than the oil-absorbing powder of the present application, the matte feeling of the skin after use was even weaker than in Example 4, which did not use an oil-absorbing powder.

[0068] Examples 6 and 7 Cosmetic emulsion compositions were prepared according to the ingredients and proportions shown in Table 4, and their appearance and feel when applied to the skin were evaluated.

[0069] [Table 4]

[0070] The diol ratio was changed in Examples 6 and 7. It was found that the emulsion system of the present invention can exhibit a matte appearance and provide a good feel when used within a wide range of diol ratios.

[0071] Examples 8 to 11 Cosmetic emulsion compositions were prepared according to the ingredients and proportions listed in Table 5, and their appearance and feel when applied to the skin were evaluated.

[0072] [Table 5]

[0073] The content of the surfactant was changed in Examples 8 to 11. It was found that the emulsion system of the present invention can exhibit a matte appearance and provide a good feel when used within a wide range of surfactant ratios.

[0074] Examples 12 to 14, and Comparative Examples 5 and 6 Cosmetic emulsion compositions were prepared according to the ingredients and proportions listed in Table 6, and their appearance and feel upon application to the skin were evaluated.

[0075] [Table 6]

[0076] The thickener content was varied in Examples 12 to 14. It was found that the emulsion system of the present invention exhibited a matte appearance and provided a good feel when used across a wide range of thickener content. In contrast, the compositions of Comparative Example 5, which contained 0.2% thickener, and Comparative Example 6, which did not contain the present thickener or oil-absorbing powder, experienced phase separation, and stable emulsion compositions could not be obtained.

[0077] Comparative Examples 7 to 10 Cosmetic emulsion compositions were prepared according to the ingredients and proportions listed in Table 7, and their appearance and feel upon application to the skin were evaluated.

[0078] [Table 7]

[0079] In Comparative Examples 7 and 8, the emulsification system was changed, i.e., the type and amount of surfactant used were changed. In Comparative Examples 7 and 8, although the emulsion compositions were still formed, it was found that they could not exhibit a good matte appearance and the feeling in use was also deteriorated. As can be seen, achieving a matte appearance and a good feel in use requires not only the use of a specific thickener, but also the use of a specific thickener in a specific emulsion system.

[0080] Examples 15 to 18 In Examples 15 to 18, the amount of oil added was changed according to the ratios in Table 8, and the appearance and feel of the resulting compositions were evaluated. It has been found that the compositions of the present application can form compositions having a matte appearance within a wide range of oil content, and can provide a good feel when used while still providing a matte feel to the skin even after use.

[0081] [Table 8]

[0082] Comparative Example 11 Compositions were formulated according to the compositions of Test Examples 10-1 and 10-2 of Patent Document 1, and the appearance and feel in use were evaluated.

[0083] [Table 9]

[0084] The composition prepared according to the test example of Patent Document 1 was unable to achieve the matte appearance of the present invention, and the phase inversion sensation of the present invention was not felt during use.

Claims

1. An oil-in-water emulsion composition comprising (A) an aqueous phase, (B) an oil phase, (C) a polyoxyalkylene-modified silicone, and (D) a thickener, The aqueous phase (A) contains a diol, the content of the diol is 1 to 20% by mass based on the total mass of the composition; the content of the oil phase (B) is 1 to 50 mass% relative to the total mass of the composition; the content of the polyoxyalkylene-modified silicone (C) is 0.2 to 2.5% by mass relative to the total mass of the composition; The oil-in-water emulsion composition, wherein the thickener (D) is at least one selected from the group consisting of sodium polyacrylate-grafted starch and acrylates crosspolymer-2-Na, and the content of the thickener (D) is 0.5 to 5% by mass based on the total mass of the composition.

2. An oil-in-water emulsion composition comprising (A) an aqueous phase, (B) an oil phase, (C) a polyoxyalkylene-modified silicone, (D) a thickener, and (E) an oil-absorbing powder, The aqueous phase (A) contains a diol, the content of the diol is 1 to 20% by mass based on the total mass of the composition; the content of the oil phase (B) is 1 to 50 mass% relative to the total mass of the composition; the content of the polyoxyalkylene-modified silicone (C) is 0.2 to 2.5% by mass relative to the total mass of the composition; The oil-in-water emulsion composition, wherein the thickener (D) is a thickener that forms a spherical or lumpy structure in a system after swelling, and the content of the thickener (D) is 0.5 to 5% by mass relative to the total mass of the composition.

3. 3. The oil-in-water emulsion composition according to claim 2, wherein the thickener (D) is selected from carbomer Na.

4. 2. The oil-in-water emulsion composition according to claim 1, further comprising (E) an oil-absorbing powder.

5. 5. The oil-in-water emulsion composition according to claim 2, wherein the oil-absorbing powder (E) is at least one selected from the group consisting of silica and starch aluminum octenyl succinate.

6. 5. The oil-in-water emulsion composition according to claim 2, wherein the content of the oil-absorbing powder (E) is 0.1 to 3 mass% relative to the total mass of the composition.

7. 7. The oil-in-water emulsion composition according to claim 1, wherein the component (C) is PEG-12 dimethicone.

8. 8. The oil-in-water emulsion composition according to claim 7, wherein the PEG-12 dimethicone does not dissolve in water and precipitates at a concentration of 5 to 20% by mass.

9. 8. The oil-in-water emulsion composition according to claim 7, wherein the PEG-12 dimethicone has an HLB calculated by the Griffin formula of less than 10.

10. The oil-in-water emulsion composition according to any one of claims 1 to 9, characterized in that the composition further contains at least one ionic surfactant (F) selected from the group consisting of sulfosuccinic acid diester salts, alkyl aryl sulfonate salts, alkyl ether sulfonate salts, sulfosuccinic acid ester salts, acyl methyl taurine salts, and acyltaurine salts.

11. 11. The oil-in-water emulsion composition according to claim 10, wherein the ionic surfactant (F) is an N-stearoyl-N-methyl taurine salt.

12. 12. The oil-in-water emulsion composition according to claim 10, wherein the content of the ionic surfactant (F) is 0.01 to 1.0% by mass relative to the total mass of the composition.

13. The oil-in-water emulsion composition according to any one of claims 1 to 12, further comprising (G) an elastomer.

14. The oil-in-water emulsion composition according to any one of claims 1 to 12, wherein the diol is dipropylene glycol.

15. Use of the oil-in-water emulsion composition according to any one of claims 1 to 14 in the manufacture of cosmetics.

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