Oil-in-water solid cosmetics and cosmetics

Abstract

To provide an oil-in-water solid cosmetic that can be molded into a desired shape, has sufficient shape retention, is easy to spread on the skin and adheres well to the skin, and provides a pleasant feeling on the skin such as freshness or coolness. [Solution] The oil-in-water solid cosmetic composition contains (A) an aliphatic alcohol having a melting point of 40°C or higher, (B) at least one polyglycerin derivative surfactant selected from the group consisting of polyglycerin fatty acid esters and polyglycerin-modified silicones, (C) gellan gum, and (D) a water-soluble thickener, wherein the content of component (C) is 0.22 to 1.3% by mass based on the total amount of the oil-in-water solid cosmetic composition.

Description

Technical Field

[0001] The present disclosure relates to water-in-oil solid cosmetics and makeup products.

Background Art

[0002] Makeup cosmetics such as lipsticks and foundations stored in stick containers are often directly applied to the skin such as the lips by applying the stick-shaped product. Oil-based solid cosmetics with excellent moldability are generally used. Oil-based solid cosmetics are composed of oil-based components such as waxes and liquid oils and powder components such as pigments. The composition is adjusted so that not only moldability but also shape retention in which the shape is not easily deformed during use and usability such as being easily spread on the skin and having good adhesion to the skin can be obtained. However, oil-based solid cosmetics have stickiness due to oil-based components and a heavy feeling due to waxes.

[0003] In cosmetics directly applied to the skin, cosmetics containing aqueous components that provide a pleasant feeling of use on the skin such as freshness or a refreshing feeling have been attracting attention. For example, Patent Document 1 below proposes a solid water-in-oil makeup cosmetic containing water, fatty acid soap, oil, and powder. Also, Patent Document 2 below proposes a water-in-oil solid cosmetic containing a sulfur-containing polysaccharide, xyloglucan, and wax.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, conventional oil-in-water solid cosmetics, when applied directly to the skin in a stick form, do not possess the same shape retention and usability as oil-based solid cosmetics, and there is still room for improvement.

[0006] The present invention has been made in view of the above circumstances, and aims to provide an oil-in-water solid cosmetic and cosmetics equipped therewith that can be molded into a desired shape, have sufficient shape retention and usability such as being easy to spread on the skin and adhering well to the skin, and provide a pleasant feeling on the skin such as freshness or coolness. [Means for solving the problem]

[0007] To solve the above problems, the following invention is provided.

[0008] [1] (A) an aliphatic alcohol having a melting point of 40°C or higher, (B) At least one polyglycerin derivative surfactant selected from the group consisting of polyglycerin fatty acid esters and polyglycerin-modified silicones, (C) Gellan Gum and (D) an oil-in-water solid cosmetic composition containing a water-soluble thickener, An oil-in-water solid cosmetic in which the content of component (C) is 0.22 to 1.3% by mass based on the total amount of the oil-in-water solid cosmetic. [2] The oil-in-water solid cosmetic according to [1], wherein the total amount of water-soluble solidifying agent (including component (C)) contained in the oil-in-water solid cosmetic is 1% by mass or less based on the total amount of the oil-in-water solid cosmetic. [3] The oil-in-water solid cosmetic according to [1] or [2], wherein the total amount of solid oil contained in the oil-in-water solid cosmetic is 7 to 20% by mass based on the total amount of the oil-in-water solid cosmetic. [4] The oil-in-water solid cosmetic composition according to any one of [1] to [3], wherein the mass ratio C / D of the content of component (C) to the content of component (D) is 0.3 to 5. [5] The oil-in-water solid cosmetic composition according to any one of [1] to [4], wherein the component (D) comprises a polyacrylamide compound containing acryloyldimethyltaurate as a constituent unit. [6] An oil-in-water solid cosmetic composition according to any one of [1] to [5], further containing a plant-derived wax. [7] A container comprising an oil-in-water solid cosmetic composition according to any one of [1] to [6] stored in the container, The container has a container body that holds the oil-in-water type solid cosmetic, and the oil-in-water type solid cosmetic is held in the container body in a state where it protrudes from the container body, or The container has a container body for containing the oil-in-water solid cosmetic, and the container body has a holder that can hold the oil-in-water solid cosmetic and protrude from the container body. A cosmetic product characterized by applying the aforementioned oil-in-water solid cosmetic composition to the skin in direct contact. [8] The cosmetic according to [7], wherein the oil-in-water solid cosmetic composition is in the shape of a stick.

[0009] The oil-in-water solid cosmetic composition described in [1] above, having the above configuration, can be molded into a desired shape (e.g., a stick), possesses sufficient shape retention and usability such as being easy to spread on the skin and adhering well to the skin, as well as providing a pleasant feeling on the skin such as freshness or coolness. The inventors speculate on the reason for these effects as follows: The moldability and shape retention of cosmetics containing aqueous components can also be improved by incorporating a high amount of water-soluble solidifying agent, but in that case, it becomes difficult to obtain ease of spreading and adhesion to the skin. In contrast, in the present invention, by using a specific amount of a particular water-soluble solidifying agent (component (C)) in combination with components (A) and (B), it is thought that the oil-in-water cosmetic composition can be sufficiently solidified, and a molded body with sufficient shape retention can be formed. Furthermore, it is speculated that the combination of component (D) allows the molded body to be easy to spread on the skin and adhere well (for example, sufficient coloring effect can be obtained) without becoming too hard, thus providing usability. [Effects of the Invention]

[0010] According to the present invention, an oil-in-water solid cosmetic and a cosmetic product comprising the same are provided, which can be molded into a desired shape, have sufficient shape retention and usability such as being easy to spread on the skin and adhering well to the skin, and can provide a pleasant feeling on the skin such as freshness or coolness. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic cross-sectional view showing one embodiment of the cosmetic product according to the present invention. [Modes for carrying out the invention]

[0012] The oil-in-water solid cosmetic composition of this embodiment (hereinafter also simply referred to as "cosmetic composition") contains (A) an aliphatic alcohol having a melting point of 40°C or higher (sometimes referred to as component (A)), (B) at least one polyglycerin derivative surfactant selected from the group consisting of polyglycerin fatty acid esters and polyglycerin-modified silicones (sometimes referred to as component (B)), (C) gellan gum (sometimes referred to as component (C)), and (D) a water-soluble thickener (sometimes referred to as component (D)).

[0013] <(A) component> As an aliphatic alcohol with a melting point of 40°C or higher, for example, a monohydric alcohol having an aliphatic hydrocarbon group with 13 to 22 carbon atoms can be used. The aliphatic hydrocarbon group may be linear, branched, saturated, or unsaturated. Component (A) may be used alone or in combination of two or more.

[0014] In this specification, the melting point of an aliphatic alcohol refers to a value measured by the following method. Approximately 5 mg of the sample is weighed and placed in an aluminum sample pan. An aluminum cover is attached to this pan and it is placed inside a differential scanning calorimeter "DSC7020" (manufactured by Hitachi High-Tech Science Co., Ltd., product name). Using an electric cooling unit "Polyscience" (manufactured by Hitachi High-Tech Science Co., Ltd., product name), the sample and reference sample are held at -10°C for 1 minute under a nitrogen gas flow rate of 30-35 mL / min. Then, the temperature is increased from 0°C to 120°C at a heating rate of 10°C / min, and the temperature is decreased from 120°C to -10°C at a cooling rate of -10°C / min. After holding at -10°C for 5 minutes, the temperature is increased again from -10°C to 120°C at a heating rate of 10°C / min to obtain a melting endothermic curve. The peak temperature of the melting endothermic curve during the second heating is defined as the melting point.

[0015] Specific examples of component (A) include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, and oleyl alcohol. From the viewpoint of improving the balance between the shape retention of the cosmetic and the ease of use, such as being easy to spread on the skin and adhering well to the skin, component (A) may be an alcohol having a linear saturated hydrocarbon group with 14 to 22 carbon atoms, or an alcohol having a linear saturated hydrocarbon group with 18 to 22 carbon atoms. Examples of alcohols having a linear saturated hydrocarbon group with 14 to 17 carbon atoms include myristyl alcohol and cetyl alcohol, and examples of alcohols having a linear saturated hydrocarbon group with 18 to 22 carbon atoms include stearyl alcohol and behenyl alcohol. These alcohols may be used in combination as component (A), or any one of them may be used.

[0016] The content of component (A) may be 1 to 20% by mass, may be 3 to 16% by mass, or may be 6 to 12% by mass based on the total amount of the cosmetic, from the viewpoint of improving the shape retention of the cosmetic and the usability of being easily stretched on the skin and having good adhesion to the skin. Further, the content of component (A) may be 3% by mass or more or 6% by mass or more from the viewpoint of improving the shape retention of the cosmetic and suppressing the excessive application of the cosmetic to the skin to improve the adhesion, and may be 16% by mass or less or 12% by mass or less from the viewpoint of improving the shape retention of the cosmetic and suppressing the slipperiness of the cosmetic on the skin to improve the adhesion.

[0017] <Other oily components> The oil-in-water solid cosmetic of the present embodiment may contain an oily component other than component (A) (sometimes referred to as other oily components). The other oily components may be solid oils, semi-solid oils, or liquid oils. These can be used alone or in combination of two or more. In this specification, a solid oil refers to an oil that is solid at 25°C, a semi-solid oil refers to an oil that is paste-like at 25°C, and a liquid oil refers to an oil that is liquid at 25°C.

[0018] The solid oil may be of plant origin, of animal origin, or may also be of petroleum origin or synthetic. The oil-in-water solid cosmetic of the present embodiment preferably contains a plant-derived wax from the viewpoint of storage stability.

[0019] Examples of plant-derived waxes include rice bran wax, carnauba wax, candelilla wax, sunflower seed wax, and other waxes; solid fats and oils such as hydrogenated castor oil, hydrogenated jojoba oil, palm oil, and Japanese wax; and hydrocarbons such as candelilla wax hydrocarbons. Examples of animal-derived solid oils include beeswax, whale wax, lanolin, and other waxes; and esters such as cholesterol fatty acid esters. Other solid oils include paraffin wax, microcrystalline wax, Fischer-Tropsch wax, polyethylene, ceresin, okezolite and other hydrocarbons; esters such as glyceryl tribehenate; higher fatty acids such as stearic acid and palmitic acid; and silicones such as acrylic-modified silicones.

[0020] The total amount of solid oil contained in the cosmetic (including component (A)) may be 7 to 20% by mass, 8 to 16% by mass, or 9 to 12% by mass, based on the total amount of the cosmetic, from the viewpoint of the moldability and adhesion of the cosmetic.

[0021] In the oil-in-water solid cosmetic composition of this embodiment, the ratio of the mass of component (A) to the total mass of solid oil (the sum of component (A) and the solid oil among other oily components) (component (A) / solid oil) may be 0.1 to 1, 0.5 to 0.95, or 0.7 to 0.9, from the viewpoint of balancing the moldability, shape retention, and usability of the cosmetic composition, as well as a pleasant feel on the skin, at a high level.

[0022] Examples of liquid oils include jojoba seed oil, sunflower seed oil, olive oil, castor oil, macadamia nut oil, camellia oil, rapeseed oil, linseed oil, triglycerin, and other liquid oils; hydrocarbon oils such as liquid paraffin, squalane, mineral oil, and hydrogenated polyisobutene; diisostearyl malate, isopropyl myristate, cetyl 2-ethylhexanoate, isopropyl palmitate, ethylhexyl palmitate, glyceryl tricaprylate / caprate, neopentyl glycol dicaprate, and glyceryl tri-2-ethylhexanoate. Examples include ester oils such as ylyl, polyglyceryl triisostearate, neopentyl glycol di-2-ethylhexanoate, and triethylhexanoin; higher alcohols such as oleyl alcohol, octyldodecanol, and isostearyl alcohol; higher fatty acids such as oleic acid, isostearic acid, linoleic acid, and linolenic acid; and silicone oils such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and methyl trimethicone.

[0023] Examples of semi-solid oils include hydrocarbons such as petrolatum, hexa(hydroxystearate / stearate / rosinate)dipentaerythrityl, tetra(hydroxystearate / isostearate)dipentaerythrityl, pentaisostearate dipentaerythrityl, hexahydroxystearate dipentaerythrityl, tri(caprylic / capric / myristic / stearic acid)glyceryl, hydrogenated castor oil isostearate, and phytostearate oleate. Examples include dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, dimer dilinoleyl bis(phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate, dimer dilinoleyl (phytosteryl / isostearyl / cetyl / stearyl / behenyl) dimer dilinoleate bisstearyl, and ester oils such as hydrogenated castor oil dimer dilinoleate.

[0024] <(B) component> Component (B) is at least one polyglycerin derivative surfactant selected from the group consisting of (B-1) polyglycerin fatty acid ester (hereinafter sometimes referred to as component (B-1)) and (B-2) polyglycerin modified silicone (hereinafter sometimes referred to as component (B-2)). Component (B) may be either component (B-1) or component (B-2), or they may be used in combination.

[0025] The HLB value of component (B) is preferably between 8 and 17, preferably between 8.5 and 15, and more preferably between 9 and 12. When the HLB value of component (B) is within the above range, the stability of the formulation is increased. The HLB value can be calculated based on the formula described on pages 8-12 of "Emulsification and Solubilization Technology," Engineering Books Co., Ltd. (May 20, 1984).

[0026] (B-1) Component is a polyglycerin in which a higher fatty acid is ester-bonded, and a product is made in which 1 to 3 fatty acids with 8 to 22 carbon atoms are ester-bonded. The degree of polymerization of the polyglycerin is, for example, 4 to 10, more preferably 6 to 10. Among these, a product in which two fatty acids are ester-bonded (polyglycerin diester) is preferred. Examples of polyglycerin diesters include decaglyceryl distearate, decaglyceryl diisostearate, decaglyceryl dioleate, and decaglyceryl dimyristate. Among these, decaglyceryl diisostearate (polyglyceryl-10 diisostearate) is preferred from the viewpoint of improving the shape retention of the cosmetic product and the usability such as being easy to spread on the skin and adhering well to the skin.

[0027] Component (B-2) includes those in which polyglycerin is modified into the main chain's silicone chain. In this case, the position of introduction of polyglycerin in the main chain's silicone chain is arbitrary. Component (B-2) is preferably a branched type having polyglycerin in the side chains or terminals of the silicone chain. Specific examples of component (B-2) include polyglyceryl-3 polydimethylsiloxyethyl dimethicone, polyglyceryl-3 disiloxane dimethicone, lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone, cetyl diglyceryl tris(trimethylsiloxy)silylethyl dimethicone, bis(polyglyceryl-3-oxyphenylpropyl) dimethicone, etc. Among these, polyglyceryl-3 polydimethylsiloxyethyl dimethicone is preferred from the viewpoint of improving the shape retention of cosmetics.

[0028] (B) The content of component (B) may be 0.6% by mass or more, 0.75% by mass or more, or 1% by mass or more, based on the total amount of the cosmetic, from the viewpoint of improving the moldability and shape retention of the cosmetic, from the viewpoint of improving the shape retention of the cosmetic and the usability such as being easy to spread on the skin and adhering well to the skin, from the viewpoint of improving the usability such as the shape retention of the cosmetic and being easy to spread on the skin and adhering well to the skin, from the viewpoint of the above, it may be 0.6 to 5% by mass, 0.75 to 4% by mass, or 1 to 3% by mass.

[0029] <Other surfactants> The oil-in-water solid cosmetic composition of this embodiment may contain surfactants other than component (B) (sometimes referred to as other surfactants). These other surfactants may be anionic surfactants, cationic surfactants, amphoteric surfactants, or nonionic surfactants. These other surfactants may be used individually or in combination of two or more.

[0030] Examples of nonionic surfactants include polyoxyalkylene alkyl ethers, glycerin alkyl ethers, glycerin fatty acid esters, sorbitan fatty acid esters and their alkylene glycol adducts, polyalkylene glycol fatty acid esters, and polyether-modified silicones. Examples of anionic surfactants include alkyl phosphates, polyoxyalkylene alkyl ether phosphates, sulfonates, alkyl sulfates, and polyaspartates. Examples of cationic surfactants include alkylamine salts and alkyltrimethylammonium salts. Examples of amphoteric surfactants include hydrogenated lecithin, carbobetine-type amphoteric surfactants, sulfobetine-type amphoteric surfactants, and amino acid-type amphoteric surfactants.

[0031] <(C) component> (C) Component is gellan gum. Gellan gum is a type of water-soluble solidifying agent that, when mixed with water, can produce a gel-like or solid mixture. It can solidify oil-in-water solid cosmetics and impart appropriate hardness to the cosmetics. In this specification, gel-like or solid state refers to a state in which the mixture does not flow when tilted at room temperature (25°C). As gellan gum, commercially available water-soluble solidifying agents for cosmetics can be used, such as Kelcogel HM, Kelcogel DGA, Kelcogel CG-HA, and Kelcogel CG-LA. Among these, deacylated gellan gum such as Kelcogel CG-LA is preferred from the viewpoint of the moldability of the cosmetic.

[0032] (C) The content of component (C) is 0.22 to 1.3% by mass, based on the total amount of the cosmetic, from the viewpoint of obtaining sufficient moldability, shape retention, and usability of the cosmetic, as well as a pleasant feeling on the skin. The above content may be 0.24% by mass or more, or 0.4% by mass or more, from the viewpoint of shape retention of the cosmetic; it may be 1.1% by mass or less, or 0.8% by mass or less, from the viewpoint of achieving both ease of spreading and adhesion to the skin; and from the above viewpoint, it may be 0.24 to 1.1% by mass, or 0.4 to 0.8% by mass.

[0033] <(D) component> As the water-soluble thickener, known ones used in cosmetics (excluding component (C)) can be used. Examples of water-soluble thickeners include acrylamide compounds, polyacrylamide compounds, cellulose-based thickeners, polysaccharide-based thickeners, and clay minerals. Component (D) can be used alone or in combination of two or more. From the viewpoint of improving the moldability of the cosmetic, component (D) preferably contains a polyacrylamide compound or a cellulose-based thickener, and more preferably contains a polyacrylamide compound.

[0034] Examples of polyacrylamide compounds include acrylamide copolymers and polyacrylamides. Among polyacrylamide compounds, those containing acryloyldimethyltaurate salt as a constituent unit are preferred.

[0035] Examples of polyacrylamide compounds containing acryloyldimethyltaurate as a constituent unit include copolymers of hydroxyethyl acrylate and acroyldimethyltaurate, such as (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer; copolymers of acrylate salts and acryloyldimethyltaurate, such as (sodium acrylate / sodium acryloyldimethyltaurate) copolymer; (ammonium acryloyldimethyltaurate / VP) copolymer; and (ammonium acryloyldimethyltaurate beheneth-25 methacrylate) crosspolymer. Among these, copolymers of hydroxyethyl acrylate and acroyldimethyltaurate are preferred, and (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer is more preferred.

[0036] (D) As component, commercially available products containing polyacrylamide compounds can be used. For example, commercially available products containing polyacrylamide include SEPIGEL 305 (a mixture of polyacrylamide, hydrogenated polyisobutene (or (C13,14) isoparaffin), laureth-7 and water, Seiwa Kasei Co., Ltd.); commercially available products containing a copolymer of hydroxyethyl acrylate and acroyldimethyl taurate include SEPINOV EMT 10 ((hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, Seiwa Kasei Co., Ltd.), SIMULGEL NS (a mixture of (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, squalane, polysorbate 60 and water, Seiwa Kasei Co., Ltd.), SIMULGEL FL (a mixture of (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, isohexadecane, polysorbate 60 and water, Seiwa Kasei Co., Ltd.), and SEPIPLUS S ((Hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, polyisobutene, PEG-7 trimethylolpropane coconut oil alkyl ether and water mixture, Seiwa Kasei Co., Ltd.); Commercial products containing copolymers of acrylates and acryloyldimethyl taurate include SIMULGEL EG QD ((Sodium acrylate / sodium acryloyldimethyl taurate) copolymer, isohexadecane, polysorbate 80 and water mixture, Seiwa Kasei Co., Ltd.) and SEPILIFE NUDE (Sodium acrylate / sodium acryloyldimethyl taurate) copolymer, (C15-19) alkane, polyglyceryl-6 laurate, polyglycerin-6 and water mixture, Seiwa Kasei Co., Ltd.); Commercial products containing copolymers of acrylamide and acrylates include SEPIPLUS 265 ((acrylamide / ammonium acrylate) copolymer, polyisobutene, polysorbate 20 and water mixture, Seiwa Kasei Co., Ltd.); Examples of commercially available products containing copolymers of acrylic acid, acrylamide, acrylate salt and acryloyldimethyltaurate include SEPIPLUS 400 (polyacrylate-13, polyisobutene, polysorbate 20 and water mixture, Seiwa Kasei Co., Ltd.).

[0037] Examples of cellulose-based thickeners include methylcellulose, ethylcellulose, cellulose gum, hydroxyethylcellulose, hydroxypropylcellulose, and hydroxypropylmethylcellulose, which are cellulose derivatives.

[0038] Examples of polysaccharide-based thickeners include pectin, guar gum, xanthan gum, and gum arabic.

[0039] (D) If component contains a polyacrylamide compound or a cellulose-based thickener, the oil-in-water solid cosmetic composition may contain any of the above water-soluble thickeners other than the polyacrylamide compound and the cellulose-based thickener, or it may not contain any of them.

[0040] (D) The content of ingredient (D) may be 0.1 to 1% by mass, 0.15 to 0.8% by mass, or 0.2 to 0.7% by mass, based on the total amount of the cosmetic, in order to improve the usability, such as ease of application and good adhesion to the skin, and shape retention in a balanced manner.

[0041] If component (D) contains a polyacrylamide compound, the amount of the polyacrylamide compound may be 30-100% by mass, 50-100% by mass, or 80-100% by mass, based on the total amount of component (D), in order to improve the usability (ease of application to the skin, good adhesion to the skin) and shape retention of the cosmetic in a balanced manner. In this case, the amount of the polyacrylamide compound may be 0.1-1% by mass, 0.15-0.8% by mass, or 0.2-0.7% by mass, based on the total amount of the cosmetic.

[0042] If component (D) contains a cellulose-based thickener, the amount of the cellulose-based thickener may be 50-100% by mass, 70-100% by mass, or 90-100% by mass, based on the total amount of component (D), in order to improve the usability (ease of application to the skin, good adhesion to the skin) and shape retention of the cosmetic in a balanced manner. In this case, the amount of the cellulose-based thickener may be 0.1-1% by mass, 0.15-0.8% by mass, or 0.2-0.7% by mass, based on the total amount of the cosmetic.

[0043] If component (D) contains a polyacrylamide compound and a cellulose-based thickener, the total content of the polyacrylamide compound and the cellulose-based thickener may be 50-100% by mass, 70-100% by mass, or 90-100% by mass, based on the total amount of component (D), in order to improve the usability (ease of application to the skin, good adhesion to the skin) and shape retention of the cosmetic in a balanced manner. In this case, the total content of the polyacrylamide compound and the cellulose-based thickener may be 0.1-1% by mass, 0.15-0.8% by mass, or 0.2-0.7% by mass, based on the total amount of the cosmetic.

[0044] In the oil-in-water solid cosmetic composition of this embodiment, in order to improve the balance between ease of use, such as the cosmetic being easy to spread on the skin and having good adhesion to the skin, and shape retention, the mass ratio C / D of the content of component (C) to the content of component (D) may be 0.3 to 5, 1 to 4.5, or 2 to 3.

[0045] When the oil-in-water solid cosmetic composition of this embodiment contains a polyacrylamide compound as component (D), in order to improve the balance between ease of use, such as the cosmetic being easy to spread on the skin and having good adhesion to the skin, and shape retention, the mass ratio of component (C) to the polyacrylamide compound may be 0.3 to 5, 1 to 4.5, or 2 to 3.

[0046] When the oil-in-water solid cosmetic composition of this embodiment contains a cellulose-based thickener as component (D), in order to improve the balance between ease of use, such as the cosmetic being easy to spread on the skin and having good adhesion to the skin, and shape retention, the mass ratio of component (C) to the cellulose-based thickener may be 0.3 to 5, 1 to 4.5, or 2 to 3.

[0047] When the oil-in-water solid cosmetic composition of this embodiment contains a polyacrylamide compound and a cellulose-based thickener as component (D), in order to improve the balance between ease of use, such as the cosmetic being easy to spread on the skin and having good adhesion to the skin, and shape retention, the mass ratio of component (C) to the total mass of the polyacrylamide compound and the cellulose-based thickener may be 0.3 to 5, 1 to 4.5, or 2 to 3.

[0048] <Other water-soluble solidifying agents> The oil-in-water solid cosmetic composition of this embodiment may contain a water-soluble solidifying agent other than gellan gum (sometimes referred to as "other water-soluble solidifying agent"). Any other water-soluble solidifying agent that can produce a gel-like or solid mixture when mixed with water is acceptable, and known agents used in cosmetics can be used. Examples of other water-soluble solidifying agents include polysaccharides such as agar, carrageenan, and tamarind gum. The oil-in-water solid cosmetic composition does not necessarily have to contain a water-soluble solidifying agent other than gellan gum.

[0049] If the oil-in-water solid cosmetic composition contains a water-soluble solidifying agent other than gellan gum, the amount of the water-soluble solidifying agent other than gellan gum may be 0.01 to 10 parts by mass, 0.01 to 1 part by mass, or 0.01 to 0.1 parts by mass per 100 parts by mass of component (C), from the viewpoint of achieving both moldability and usability of the cosmetic composition.

[0050] The total content of the water-soluble solidifying agent (including component (C)) in the oil-in-water solid cosmetic of this embodiment may be 0.22% by mass or more, 0.24% by mass or more, or 0.4% by mass or more, based on the total amount of the cosmetic, from the viewpoint of moldability and shape retention of the cosmetic. From the viewpoint of achieving both ease of spreading and adhesion of the cosmetic to the skin, it may be less than 2% by mass, 1% by mass or less, or 0.8% by mass or less.

[0051] In the oil-in-water solid cosmetic composition of this embodiment, from the viewpoint of improving the balance between ease of use, such as the cosmetic composition being easy to spread on the skin and having good adhesion to the skin, and shape retention, the mass ratio of the total content of the water-soluble solidifying agent (including component (C)) contained in the oil-in-water solid cosmetic composition to the content of component (D) may be 0.3 to 5, 1 to 4.5, or 2 to 3.

[0052] When the oil-in-water solid cosmetic composition of this embodiment contains a polyacrylamide compound as component (D), the total content of component (C) and the polyacrylamide compound may be 95 parts by mass or more, 99 parts by mass or more, 99.9 parts by mass or more, or 100 parts by mass, based on 100 parts by mass of the total content of the water-soluble solidifying agent (including component (C)) and water-soluble thickener contained in the cosmetic composition.

[0053] When the oil-in-water solid cosmetic composition of this embodiment contains a cellulose-based thickener as component (D), the total content of component (C) and the cellulose-based thickener may be 95 parts by mass or more, 99 parts by mass or more, 99.9 parts by mass or more, or 100 parts by mass, based on 100 parts by mass of the total content of the water-soluble solidifying agent (including component (C)) and water-soluble thickener contained in the cosmetic composition.

[0054] When the oil-in-water solid cosmetic composition of this embodiment contains a polyacrylamide compound and a cellulose-based thickener as component (D), the total content of component (C), the polyacrylamide compound, and the cellulose-based thickener may be 95 parts by mass or more, 99 parts by mass or more, 99.9 parts by mass or more, or 100 parts by mass, based on 100 parts by mass of the total content of the water-soluble solidifying agent (including component (C)) and water-soluble thickener contained in the cosmetic composition.

[0055] <Aqueous solvent> The oil-in-water solid cosmetic composition of this embodiment may contain water as an aqueous solvent. From the viewpoint of balancing the moldability, shape retention, and usability of the cosmetic composition, as well as a pleasant feeling on the skin such as freshness or coolness, the water content may be 20 to 70% by mass, 30 to 60% by mass, or 35 to 50% by mass, based on the total amount of the oil-in-water solid cosmetic composition. The oil-in-water solid cosmetic composition may further contain polyhydric alcohols such as 1,3-butylene glycol (BG) and glycerin as an aqueous solvent. From the viewpoint of the feeling of use such as freshness of the cosmetic composition, the total content of the aqueous solvent may be 20 to 70% by mass, 30 to 60% by mass, or 35 to 50% by mass, based on the total amount of the oil-in-water solid cosmetic composition.

[0056] <Powder components> The oil-in-water solid cosmetic composition of this embodiment may contain powder components. The powder can be any powder commonly used in cosmetics, without any particular limitations. Examples include extender powders and coloring pigments. These powders may be commercially available products pre-mixed with the aforementioned liquid oil. Furthermore, the oil-in-water solid cosmetic composition does not necessarily have to contain powder components.

[0057] Examples of filler powders include inorganic powders, synthetic inorganic powders, organic powders, metal soaps, and synthetic polymer powders. More specifically, examples include glass powder, anhydrous silicic acid, aluminum silicate, magnesium silicate, aluminum magnesium silicate, mica, synthetic fluorphlogopite (synthetic mica), kaolin, sericite, synthetic sericite, talc, fluorphlogopite, synthetic mica, silica, calcium carbonate, magnesium carbonate, aluminum oxide, boron nitride, silicon carbide, barium sulfate, zinc stearate, aluminum stearate, zinc myristate, polyethylene powder, urethane beads, polymethyl methacrylate, and organopolysiloxane elastomers.

[0058] Examples of coloring pigments include red iron oxide, yellow iron oxide, black iron oxide, cobalt oxide, chromium oxide, ultramarine, Prussian blue, titanium dioxide, zinc oxide, fine particle titanium dioxide, mica, and pearl pigments (titanium mica, iron oxide-coated titanium mica, fine particle titanium dioxide-coated titanium mica, barium sulfate-coated titanium mica, fish scale foil, bismuth oxychloride, aluminum flakes, etc.). These powders may be untreated or surface-treated to improve usability and dispersibility. Examples of surface treatments include metal soaps, silicone compounds, fluorine compounds, surfactants, and amino acid compounds.

[0059] The amount of powder components may be 0-30% by mass, 0.1-20% by mass, or 3-10% by mass, based on the total amount of cosmetic, in order to improve the pleasant feel on the skin, such as freshness or coolness, the ease of application and adhesion to the skin, and the moldability and shape retention in a balanced manner.

[0060] <Other ingredients> The oil-in-water solid cosmetic composition of this embodiment may contain components other than those described above. Other components may include those commonly used in cosmetics, such as aqueous components like moisturizers, UV absorbers, defoamers, preservatives, vitamins, beauty ingredients, antioxidants, fragrances, emulsifying stabilizers, etc., which can be appropriately oriented as needed, without impairing the effects of the present invention. The aqueous components may also be used as aqueous solvents.

[0061] Examples of humectants include polyhydric alcohols such as 1,3-butylene glycol (BG), dipropylene glycol (DPG), glycerin, 1,2-pentanediol, sorbitol, and mannitol. These can be used individually or in combination of two or more.

[0062] In the oil-in-water solid cosmetic composition of this embodiment, from the viewpoint of satisfying at a high level the moldability, shape retention, and usability of the cosmetic composition, as well as a pleasant feeling on the skin such as freshness or coolness, the total content of the components constituting the aqueous phase may be 25 to 80% by mass, 30 to 75% by mass, or 40 to 65% by mass, based on the total amount of the oil-in-water solid cosmetic composition.

[0063] In the oil-in-water solid cosmetic composition of this embodiment, from the viewpoint of satisfying at a high level the moldability, shape retention, and usability of the cosmetic composition, as well as a pleasant feeling on the skin such as freshness or coolness, the total content of water, component (C), and component (D) may be 25 to 80% by mass, 30 to 75% by mass, or 40 to 65% by mass, based on the total amount of the oil-in-water solid cosmetic composition.

[0064] The hardness of the oil-in-water solid cosmetic composition in this embodiment is preferably 0.7 to 1.5 N, from the viewpoint of improving the shape retention and usability of the cosmetic composition in a balanced manner. In this specification, the hardness of the cosmetic composition refers to the value measured by the following procedure. First, a sample for measurement is prepared by filling a 30 mL screw cup with a cosmetic composition that has been heated to 85°C or higher and melted, and leaving it overnight at 25°C. The hardness of this sample is obtained by measuring it using a FUDOH rheometer RT-2002D·D (manufactured by Rheotech Co., Ltd.) under the following conditions: pressure-sensitive shaft tip shape: cylindrical with a diameter of 3 mm, needle insertion speed: 6 cm / min, needle insertion depth: 10 mm, and temperature: 25°C.

[0065] The oil-in-water solid cosmetic of this embodiment may be three-dimensionally molded to be applied directly to the skin. The cosmetic may have, for example, a stick shape or a jar shape. In a three-dimensionally molded oil-in-water solid cosmetic, the cosmetic is held in the container body such that at least a portion of the cosmetic protrudes from the container body, allowing the cosmetic to be applied directly to the skin. In this case, the cosmetic may always protrude from the container body, or it may protrude from the container body by a dispensing mechanism of the container.

[0066] Examples of uses for the oil-in-water solid cosmetic composition of this embodiment include makeup cosmetics such as blush, eyeshadow, foundation, lipstick, concealer, highlighter, makeup base, and eyebrow products; skincare cosmetics such as serum sticks and moisturizers; body cosmetics such as sunscreen and solid perfume; and hair styling cosmetics such as temporary hair dyes.

[0067] [Method for manufacturing oil-in-water solid cosmetic product] A method for producing an oil-in-water solid cosmetic according to this embodiment is, for example, to mix the above-mentioned components (A), (B), (C), (D), and other components (such as powder components, other oily components, and other aqueous components) with water, fill this mixture into a predetermined mold, and solidify it.

[0068] The mixing procedure may involve, for example, preparing an oil phase containing component (A) and other oil phase components, and an aqueous phase containing components (C), (D), other aqueous components, and water, and then adding the oil phase to the aqueous phase and stirring to emulsify. The surfactant containing component (B) may be mixed with the oil phase, mixed with the aqueous phase, or mixed separately into the oil and aqueous phases. The powder components may be mixed with the oil phase, mixed with the aqueous phase, or mixed separately into the oil and aqueous phases.

[0069] The temperature used to prepare the oil phase may be the temperature at which component (A) dissolves in the solvent. The temperature used to prepare the aqueous phase may be the temperature at which components (C) and (D) dissolve in the solvent.

[0070] As the specified mold described above, a metal mold may be used, or a general container used for cosmetics may be used. When a metal mold is used as the mold for filling the cosmetic, after the cosmetic has solidified, the cosmetic can be inserted into the holder (such as an inner tray) of the cosmetic container and filled (insert-type filling) to obtain the cosmetic according to the embodiment described later. The oil-in-water solid cosmetic of this embodiment can be molded into a desired shape and has sufficient shape retention, so it may be molded by the insert-type filling described above.

[0071] A container that can be used as a mold generally has a cylindrical part (sleeve) which is part of the container, and a cylindrical holder that can move up and down inside it. The cosmetic product of the embodiment described later can be obtained by directly filling the inside of these cylindrical members with the above mixture or a heated and melted version thereof. The oil-in-water solid cosmetic product of this embodiment can be molded into a desired shape and has sufficient shape retention, so it may be molded by direct filling as described above.

[0072] Direct filling methods include the front filling method and the back filling method. In the front filling method, the above mixture is filled into the cosmetic container through the opening. At this time, after filling a certain amount of the mixture, the opening of the cosmetic container may be covered with an upper mold (mold). In the back filling method, the cosmetic container is inverted and the above mixture is filled into a filling hole provided in the bottom of the cosmetic container. At this time, the opening of the cosmetic container may be covered with an upper mold (mold). After the cosmetic has cooled and solidified, the filling hole may be sealed with a stopper or sealing seal.

[0073] [cosmetics] The cosmetic of this embodiment comprises a container and the oil-in-water solid cosmetic of this embodiment contained in the container, wherein the container has a container body that holds the oil-in-water solid cosmetic, and the oil-in-water solid cosmetic is held in the container body in a state where it protrudes from the container body, or the container has a container body that contains the oil-in-water solid cosmetic, and the container body has a holder that can hold the oil-in-water solid cosmetic and protrude from the container body, and the oil-in-water solid cosmetic is applied by directly contacting it with the skin.

[0074] Since the cosmetic of this embodiment comprises the oil-in-water solid cosmetic composition of this embodiment described above, the cosmetic composition can have a predetermined shape, possess sufficient shape retention and usability such as being easy to spread on the skin and adhering well to the skin, as well as providing a pleasant feeling on the skin such as freshness or coolness.

[0075] The above-mentioned container can be any general container used for cosmetics, such as a container with a mechanism that allows for the extension and retraction of a stick-shaped cosmetic product, or any general container used for lipstick, etc.

[0076] Figure 1 is a schematic cross-sectional view showing one embodiment of a cosmetic product. The cosmetic product 11 shown in Figure 1 comprises a container 3 and an oil-in-water solid cosmetic product 1 of this embodiment contained in the container 3. The container 3 comprises a container body 4, an upper lid 8 covering the upper part of the container body 4, and a bottom lid 9 covering the lower part of the container body 4. The container body 4 includes a holder 6 for holding the oil-in-water solid cosmetic product 1 and a mechanism for extending and retracting the holder 6. The container body 4 has a spiral groove on the inside, and the holder 6 can be extended and retracted by a shaft 5 that holds the holder 6 through the groove, and a sleeve 7 that transmits rotational movement to the holder 6. In the cosmetic product 11, the holder 6 and the bottom lid 9 have a filling hole in the center of the bottom, and the mixture of raw materials constituting the oil-in-water solid cosmetic product 1 can be filled through this filling hole by a back-filling method to form the oil-in-water solid cosmetic product 1. [Examples]

[0077] The present invention will be described in more detail below with reference to examples, but these examples do not limit the technical scope of the present invention.

[0078] [Preparation of oil-in-water solid cosmetic] (Examples 1-10, Comparative Examples 1-9) Oil-in-water emulsion solid cosmetic (cheek) was prepared using the formulations shown in Tables 1-3 (the numerical values ​​for the amounts indicate the content (mass %) based on the total amount of cosmetic) and the following manufacturing method.

[0079] <Manufacturing method> Each component of the aqueous phase group was mixed with purified water and heated to over 85°C. After confirming that the water-soluble solidifying agent was completely dissolved, it was uniformly dispersed to form the aqueous phase. Meanwhile, each component of the oil phase group was mixed, heated to over 85°C, dissolved, and homogenized to form the oil phase. Subsequently, while stirring the aqueous phase, the oil phase was gradually added to this aqueous phase to emulsify and obtain a mixed solution. This mixed solution was kept at over 60°C and filled into a stick-shaped container mold with a dispensing mechanism. After being left at room temperature for over an hour to cool, a water-in-oil type solid cosmetic with a smooth top surface was obtained.

[0080] The obtained oil-in-water emulsion solid cosmetic composition was evaluated for each item based on the evaluation method described below. The results are shown in Tables 1 to 3.

[0081] <Moldability of cosmetics> The state of the cosmetic composition after cooling in the above manufacturing method was evaluated according to the evaluation criteria below. Note that Comparative Examples 2 and 3 remained liquid after cooling and did not solidify. [Evaluation Criteria] ○: Can be molded into the shape of the mold. ×: Not molded to the shape of the mold (solidifies but breaks easily, does not solidify, gel-like, etc.)

[0082] <Evaluation of cosmetics> Five cosmetic evaluation panel members applied the example and comparative examples of cosmetics directly to the inside of their arms, ensuring the top surface of the cosmetic was in contact with the inside of their arms. They evaluated the cosmetics from the perspectives of ease of spreading, adhesion (coloring efficiency), and usability, such as freshness or coolness. Each evaluation was conducted on a 5-point scale according to the evaluation criteria below, with a score assigned to each sample. The average score from all panel members was then used to determine the final result according to the judgment criteria below. [Rating: Evaluation Criteria] 5 points: very good 4 points: Good 3 points: Average 2 points: Slightly poor 1 point: Defective [Evaluation Criteria (Average Score)] ◎: 4 or higher ○: 3 or more and less than 4 △: 2 or more but less than 3 ×: Less than 2

[0083] <Shape retention> Five cosmetic evaluation panel members applied the example and comparative examples of cosmetics directly to the inside of their arms, ensuring the top surface of the cosmetic was in contact with the inside of their arms. After 10 back-and-forth applications, they evaluated the condition of the cosmetics. Each evaluation was conducted using a 5-point scale according to the evaluation criteria below, assigning a score to each sample. The average score from all panel members was then used to determine the final result according to the judgment criteria below. [Rating: Evaluation Criteria] 5 points: No chips or defects. 4 points: The edge of the cosmetic product is slightly chipped. 3 points: The edges of the cosmetic product are chipped all over. 2 points: Makeup tends to break down overall. 1 point: Cosmetics come off [Evaluation Criteria (Average Score)] ◎: 4 or higher ○: 3 or more and less than 4 △: 2 or more but less than 3 ×: Less than 2

[0084] [Table 1]

[0085] [Table 2]

[0086] [Table 3]

[0087] The details of each component in Tables 1-3 are as follows:

[0088] <(A) component> Behenyl alcohol: Solid oil, melting point 66°C Stearyl alcohol: Solid oil, melting point 61°C <Other oily components> Dimethicone: Liquid oil, viscosity 6 mPa·s

[0089] The melting point of the solid oil was measured according to the measurement method described above. The viscosity of the liquid oil was measured according to the following measurement method. (Method for measuring viscosity) The viscosity of samples at 25°C was measured using a Brookfield viscometer (BM type) under the following conditions. The measurement time was 1 minute. 5-50 mPa·s: BM type, BL adapter, rotation speed 12 rpm 50-500 mPa·s: BM type, rotor No. 1, rotation speed 12 rpm 250-2500 mPa·s: BM type, rotor No. 2, rotational speed 12 rpm 1000~10000 mPa·s: BM type, rotor No. 3, rotation speed 12 rpm 5000~50000 mPa·s: BM type, rotor No. 4, rotational speed 12 rpm

[0090] <(B) component> Polyglycerin-modified silicone: Polyglyceryl-3 disiloxane dimethicone (manufactured by Shin-Etsu Chemical Co., Ltd., product name "KF-6100", HLB: medium) Polyglycerin fatty acid ester 1: Polyglyceryl-10 diisostearate (HLB 11.1) Polyether-modified silicone: PEG-11 methyl ether dimethicone (manufactured by Shin-Etsu Chemical Co., Ltd., product name "KF-6011", HLB 14.5)

[0091] <Other surfactants> PEG-60 Hydrogenated Castor Oil: Hydrogenated castor oil with polyethylene glycol ether (average number of moles added: 60, HLB 14) Polysorbate 80: Nonionic surfactant (HLB15)

[0092] <(C) component> Gellan gum: (Manufactured by Iwase Cosfa Co., Ltd., product name "Kelcogel CG-LA")

[0093] <(D) component> Polyacrylamide compound 1: (Hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer mixture (manufactured by SEPIPIC, trade name "SEPINOV EMT 10") Polyacrylamide compound 2: Polyacrylamide mixture (SEPIPIC, SEPIGEL 305, component concentration 40%)

[0094] (Example 11: Cheek) (Ingredients) (Percentage of ingredients by mass) 1. Wednesday 45.28 2. BG 6.00 3. Glycerin 1.5g 4. Gellan gum 0.25 5. Phenoxyethanol 0.50 6. Polyacrylamide compound 1 0.80 7. Magnesium chloride 0.20 8. Behenyl alcohol 6.50 9. Squalane 8.00 10. Dimethicone 3.80 11. Methyltrimethicone 2.00 12. Carnauba Low 2.50 13. Trimethylsiloxysilicate 3.00 14. Lauroyl lysine 2.50 15. (Dimethicone / Vinyl Dimethicone) Crosspolymer 1.20 16. PEG-60 Hydrogenated Castor Oil 1.00 17. Titanium Mica 2.50 18. Titanium dioxide 0.75 19. Synthetic fluorophlogopite 9.00 20. Iron oxide 0.50 21. Red 226 0.20 22. Polyglycerin-modified silicone 2.00 23. Antioxidant 0.02 Total 100.00

[0095] The details of the above ingredients are the same as those described above.

[0096] <Manufacturing method> An oil-in-water solid cosmetic was obtained in the same manner as in Example 1, except that components 2 to 7 were mixed with purified water (component 1) as components of the aqueous phase, and components 8 to 23 were mixed as components of the oil phase.

[0097] <Rating> When the obtained oil-in-water solid cosmetic composition was evaluated in the same manner as described above, it was confirmed that it received the following ratings: moldability "○", spreadability "○", adhesion (coloring efficiency) "○", shape retention "○", and usability "○".

[0098] (Example 12: Cheek) (Ingredients) (Percentage of ingredients by mass) 1.Wednesday 43.98 2. BG 6.00 3. Glycerin 1.5g 4. Gellan gum 0.25 5. Phenoxyethanol 0.50 6. Polyacrylamide compound 1 0.80 7. Behenyl alcohol 9.00 8. Squalane 7.00 9. Dimethicone 3.80 10. Methyltrimethicone 1.20 11. Neopentyl glycol diethylhexanoate 3.00 12. Carnauba Low 2.00 13. Trimethylsiloxysilicate 1.80 14. Lauroyl lysine 2.50 15. (Dimethicone / Vinyl Dimethicone) Crosspolymer 1.20 16. PEG-60 Hydrogenated Castor Oil 1.00 17. Titanium Mica 2.50 18. Titanium dioxide 0.75 19. Synthetic fluorophlogopite 1.00 20. Mica 7.50 21. Iron oxide 0.50 22. Red 226 0.20 23. Polyglycerin fatty acid ester 1 2.00 24. Antioxidant 0.02 Total 100.00

[0099] The details of the above ingredients are the same as those described above.

[0100] <Manufacturing method> An oil-in-water solid cosmetic was obtained in the same manner as in Example 1, except that components 2 to 6 were mixed with purified water (component 1) as aqueous phase components, and components 7 to 24 were mixed as oil phase components.

[0101] <Rating> When the obtained oil-in-water solid cosmetic composition was evaluated in the same manner as described above, it was confirmed that it received the following ratings: moldability "○", spreadability "○", adhesion (coloring efficiency) "○", shape retention "○", and usability "○".

[0102] (Example 13: Cheek) (Ingredients) (Percentage of ingredients by mass) 1.Wednesday 45.98 2. BG 6.00 3. Glycerin 1.5g 4. Gellan gum 0.25 5. Phenoxyethanol 0.50 6. Polyacrylamide compound 1 0.80 7. Behenyl alcohol 9.00 8. Squalane 10.00 9. Dimethicone 3.80 10. Methyltrimethicone 1.20 11. Lauroyl lysine 2.50 12. Trimethylsiloxysilicate 1.80 13. (Dimethicone / Vinyl Dimethicone) Crosspolymer 1.20 14. PEG-60 Hydrogenated Castor Oil 1.00 15. Synthetic fluorophlogopite 1.00 16. Mica 7.50 17. Titanium Mica 2.50 18. Titanium dioxide 0.75 19. Iron oxide 0.50 22. Red 226 0.20 23. Polyglycerin fatty acid ester 2 2.00 24. Antioxidant 0.02 Total 100.00

[0103] The details of the above components are the same as those already described, except for the components listed below. Polyglycerin fatty acid ester 2: Polyglyceryl-10 dioleate (HLB11)

[0104] <Manufacturing method> An oil-in-water solid cosmetic was obtained in the same manner as in Example 1, except that components 2 to 6 were mixed with purified water (component 1) as components of the aqueous phase, and components 7 to 24 were mixed as components of the oil phase.

[0105] <Rating> When the obtained oil-in-water solid cosmetic composition was evaluated in the same manner as described above, it was confirmed that it received the following ratings: moldability "○", spreadability "○", adhesion (coloring efficiency) "○", shape retention "△", and usability "○".

[0106] (Example 14: Cheek) (Ingredients) (Percentage of ingredients by mass) 1.Wednesday 45.98 2. BG 6.00 3. Glycerin 1.5g 4. Gellan gum 0.25 5. Phenoxyethanol 0.50 6. Polyacrylamide compound 1 0.80 7. Behenyl alcohol 9.00 8. Squalane 10.00 9. Dimethicone 3.80 10. Methyltrimethicone 1.20 11. Lauroyl lysine 2.50 12. Trimethylsiloxysilicate 1.80 13. (Dimethicone / Vinyl Dimethicone) Crosspolymer 1.20 14. PEG-60 Hydrogenated Castor Oil 1.00 15. Synthetic fluorophlogopite 1.00 16. Mica 7.50 17. Titanium Mica 2.50 18. Titanium dioxide 0.75 19. Iron oxide 0.50 22. Red 226 0.20 23. Polyglycerin fatty acid ester 3 2.00 24. Antioxidant 0.02 Total 100.00

[0107] The details of the above components are the same as those already described, except for the components listed below. Polyglycerin fatty acid ester 3: Polyglyceryl-10 dimyristate (HLB 12.3)

[0108] <Manufacturing method> An oil-in-water solid cosmetic was obtained in the same manner as in Example 1, except that components 2 to 6 were mixed with purified water (component 1) as components of the aqueous phase, and components 7 to 24 were mixed as components of the oil phase.

[0109] <Rating> When the obtained oil-in-water solid cosmetic composition was evaluated in the same manner as described above, it was confirmed that it received the following ratings: moldability "○", spreadability "○", adhesion (coloring efficiency) "○", shape retention "△", and usability "○".

[0110] (Example 15: Serum Stick) (Ingredients) (Percentage of ingredients by mass) 1. Water Residual 2. BG 10.00 3. Glycerin 7.00 4. Gellan gum 0.60 5. Phenoxyethanol 0.50 6. Polyacrylamide compound 1 0.25 7. Sodium chloride 0.20 8. Sodium hyaluronate 0.015 9. Lavender flower extract 0.007 10. Behenyl alcohol 10.00 11. Squalane 7.00 12. Dimethicone 7.00 13. Methyltrimethicone 5.00 14. Jojoba seed oil 3.50 15. Neopentyl glycol diethylhexanoate 3.00 16. (Dimethicone / Vinyl Dimethicone) Crosspolymer 2.00 17. Polyglycerin-modified silicone 2.00 18. Carnauba Low 1.70 19. PEG-60 Hydrogenated Castor Oil 1.00 20. Antioxidant 0.02 Total 100.00

[0111] The details of the above ingredients are the same as those described above.

[0112] <Manufacturing method> A beauty serum stick was obtained in the same manner as in Example 1, except that components 2-9 were mixed with purified water (component 1) as components of the aqueous phase, and components 10-20 were mixed as components of the oil phase.

[0113] <Rating> Regarding the obtained serum sticks, the same evaluation as above was performed, except that the adhesion to the skin was evaluated from the perspective of ease of use instead of coloring efficiency. The results confirmed that the moldability was "〇", ease of spreading was "◎", adhesion was "◎", shape retention was "◎", and usability was "◎".

[0114] (Example 16: Stick eyeshadow) (Ingredients) (Percentage of ingredients by mass) 1.Wednesday 26.69 2. BG 6.00 3. Glycerin 3.50 4. Gellan gum 0.60 5. Phenoxyethanol 0.50 6. Polyacrylamide compound 1 0.25 7. Alkyl acrylate derivative emulsion water-dispersible film-forming agent 7.00 8. Sodium chloride 0.20 9. Behenyl alcohol 10.00 10. Squalane 7.00 11. Dimethicone 5.50 12. Methyltrimethicone 4.00 13. Neopentyl glycol diethylhexanoate 3.00 14. Jojoba seed oil 3.00 15. Polyglycerin-modified silicone 2.00 16. Carnauba Low 1.70 17. (Dimethicone / Vinyl Dimethicone) Crosspolymer 1.70 18. PEG-60 Hydrogenated Castor Oil 1.00 19. Dimethicone-treated spherical silica (particle size 5 μm) 0.50 20. Dimethicone-treated mica 1.50 21. Dimethicone-treated titanium mica 11.50 22. Dimethicone-treated mica black 1.80 23. Iron oxide 1.00 24. Red 226 0.04 25. Antioxidant 0.02 Total 100.00

[0115] The details of the above components are the same as those already described, except for the components listed below. Alkyl acrylate derivative emulsion water-dispersible film-forming agent: (30% solids, 70% water)

[0116] <Manufacturing method> A stick eyeshadow was obtained in the same manner as in Example 1, except that components 2-8 were mixed with purified water (component 1) as components of the aqueous phase, and components 9-25 were mixed as components of the oil phase.

[0117] <Rating> When the resulting stick eyeshadow was evaluated in the same way as described above, it was confirmed that it received the following ratings: moldability "◎", ease of application "◎", adhesion (coloring efficiency) "◎", shape retention "◎", and usability "◎".

[0118] <Measuring hardness> The hardness of the cosmetic products in Examples 2, 11, 12, 15, and 16 was measured using the following procedure. First, the cosmetic was heated to over 85°C to melt and filled into a 30mL screw cup. The sample was then left overnight at 25°C to prepare the sample for measurement. The hardness of these sample was measured using a FUDOH rheometer RT-2002D·D (manufactured by Rheotech Co., Ltd.) under the following conditions: pressure-sensitive shaft tip shape: cylindrical with a diameter of 3 mm, needle insertion speed: 6 cm / min, needle insertion depth: 10 mm, and temperature: 25°C. The results are shown in Table 4.

[0119] [Table 4] [Explanation of symbols]

[0120] 1…Oil-in-water solid cosmetic, 3…Container, 4…Container body, 5…Shaft, 6…Holder, 7…Sleeve, 8…Top lid, 9…Bottom lid, 11…Cosmetics.

Claims

1. (A) an aliphatic alcohol having a melting point of 40°C or higher, (B) At least one polyglycerin derivative surfactant selected from the group consisting of polyglycerin fatty acid esters and polyglycerin-modified silicones, (C) Gellan Gum and (D) A water-soluble thickener, and an oil-in-water solid cosmetic composition containing, An oil-in-water solid cosmetic in which the content of component (C) is 0.22 to 1.3% by mass based on the total amount of the oil-in-water solid cosmetic.

2. The oil-in-water solid cosmetic according to claim 1, wherein the total content of the water-soluble solidifying agent (including component (C)) contained in the oil-in-water solid cosmetic is 1% by mass or less based on the total amount of the oil-in-water solid cosmetic.

3. The oil-in-water solid cosmetic according to claim 1, wherein the total amount of solid oil contained in the oil-in-water solid cosmetic is 7 to 20% by mass based on the total amount of the oil-in-water solid cosmetic.

4. The oil-in-water solid cosmetic composition according to claim 1, wherein the mass ratio C / D of the content of component (C) to the content of component (D) is 0.3 to 5.

5. The oil-in-water solid cosmetic composition according to claim 1, wherein component (D) comprises a polyacrylamide compound containing acryloyldimethyltaurate as a constituent unit.

6. The oil-in-water solid cosmetic composition according to claim 1, further containing a plant-derived wax.

7. A container and an oil-in-water solid cosmetic composition according to any one of claims 1 to 6 stored in the container, The container has a container body that holds the oil-in-water type solid cosmetic, and the oil-in-water type solid cosmetic is held in the container body in a state where it protrudes from the container body, or The container has a container body for containing the oil-in-water type solid cosmetic, and the container body has a holder that can hold the oil-in-water type solid cosmetic and protrude from the container body. A cosmetic product characterized by applying the aforementioned oil-in-water solid cosmetic composition to the skin in direct contact.

8. The cosmetic according to claim 7, wherein the oil-in-water solid cosmetic composition has a stick shape.

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