Solid oily cleansing cosmetic

Abstract

To provide a solid oily cleansing cosmetic containing marine silt, capable of maintaining a low-friction state over time and suppressing aggregation and sedimentation of the marine silt.SOLUTION: A solid oily cleansing cosmetic composition comprises: 4.0 to 15 mass% of Component A; 50 to 90 mass% of Component B; 5.0 to 30 mass% of Component C; 0.1 to 5.0 mass% of Component D; 0.1 to 20 mass% of Component E; and 0.001 to 2.0 mass% of Component F, wherein Component A is a solid oil having a melting point of 50 to 120°C, Component B is a liquid oil, Component C is a nonionic surfactant having an HLB value of 8 to 15, Component D is silica, Component E is marine silt, and Component F is a cationic polymer.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a solid oil-based cleansing cosmetic preparation. [Background technology]

[0002] In recent years, solid oil-based cleansing cosmetics have been proposed as cleansing cosmetics. Solid oil-based cleansing cosmetics are mainly composed of solid oil, liquid oil, and nonionic surfactant, and are in a solid form at room temperature, so they do not drip when used. In addition, because they are oil-based cleansing cosmetics, they have excellent cleansing power, excellent makeup cosmetic removal performance, and excellent skin dirt removal performance such as pore dirt that cannot be removed by face washing.

[0003] Patent Document 1 discloses that by incorporating powder and fumed silica in a specific ratio together with solid oil, liquid oil, and a nonionic surfactant having a specific HLB value, it is possible to obtain an oil-based solid cleansing cosmetic that does not drip, has high cleansing power and massage effect, is easy to rinse off, leaves a refreshing feeling after rinsing, and has excellent quality stability. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-26420 A Summary of the Invention [Problem to be solved by the invention]

[0005] In order to remove skin dirt such as makeup dirt and pore dirt using solid oil-based cleansing cosmetics, it is important to maintain the application in a low-friction state by placing the cleansing cosmetic between the finger / palm and the surface of the application area during use and not directly contacting the finger / palm with the surface of the application area. This is because efficient dirt removal is possible by extending the contact time between the dirt and the cleansing cosmetic while maintaining a low-friction state. The maintenance of such a low-friction state is expressed as a feeling of use. However, in conventional general solid oil-based cleansing cosmetics, the card-house structure of solid oils such as synthetic wax contained in the cleansing cosmetic easily collapses due to the pressing force and shear force generated during application, and the cleansing cosmetic becomes oily in a relatively short time, making it difficult to maintain a low-friction state.

[0006] Sea silt is also known as a raw material for cosmetics. Sea silt has the characteristics of being very fine in particle size, excellent in dirt adsorption ability, and excellent in removing dirt such as dirt from pores. However, it has been found that when sea silt is blended into a solid oil-based cleansing cosmetic, the sea silt aggregates with each other to form aggregates in the cosmetic, and when the amount of sea silt blended is large, the aggregates settle to the bottom of the container. When the sea silt settles, the sea silt becomes unevenly dispersed, and the content of sea silt in the vertical direction of the cosmetic is biased, which results in a loss of appearance of the cleansing cosmetic and a loss of quality stability.

[0007] An object of the present invention is to provide a sea silt-containing solid oil-based cleansing cosmetic which maintains a low friction state for a long period of time and inhibits aggregation and sedimentation of the sea silt in the cosmetic. [Means for solving the problem]

[0008] As a result of extensive research aimed at solving the above problems, the present inventors have discovered that by blending a specified amount of sea silt into the framework formulation of a solid oil-based cleansing cosmetic, which comprises a specific solid oil, liquid oil, and a nonionic surfactant with an HLB value of 8 to 15, and further blending in a specified amount of silica and a specified amount of cationic polymer, it is possible to obtain a solid oil-based cleansing cosmetic that can suppress the aggregation of the sea silt particles and can maintain a low friction state for a long period of time during use, thereby completing the present invention.

[0009] That is, the present invention provides A solid oil-based cleansing cosmetic composition containing the following components A to F, wherein the content of component A is 4.0 to 15% by mass, the content of component B is 50 to 90% by mass, the content of component C is 5.0 to 30% by mass, the content of component D is 0.1 to 5.0% by mass, the content of component E is 0.1 to 20% by mass, and the content of component F is 0.001 to 2.0% by mass: Component A: Solid oil with a melting point of 50 to 120°C Component B: Liquid oil Component C: Nonionic surfactant with HLB value of 8 to 15 Component D: Silica Ingredient E: Sea silt Component F: Cationic polymer Regarding. Effect of the Invention

[0010] The sea silt-containing solid oil-based cleansing cosmetic composition of the present invention has the effect of maintaining a low friction state for a long period of time and inhibiting the aggregation and sedimentation of sea silt in the cosmetic composition. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] That is, the present invention is as follows. [1] A solid oil-based cleansing cosmetic composition containing the following components A to F, wherein the content of component A is 4.0 to 15 mass%, preferably 5.0 to 12 mass%, and more preferably 6.0 to 9.0 mass%, the content of component B is 50 to 90 mass%, preferably 60 to 88 mass%, and more preferably 70 to 86 mass%, the content of component C is 5.0 to 30 mass%, preferably 6.0 to 20 mass%, and more preferably 8.0 to 15 mass%, and the content of component D is the content of component A is 0.1 to 5.0 mass%, preferably 0.5 to 4.0 mass%, and more preferably 1.0 to 3.0 mass% of the solid oil-based cleansing cosmetic, the content of component B is 0.1 to 20 mass%, preferably 0.2 to 15 mass%, and more preferably 0.5 to 10 mass%, and the content of component C is 0.001 to 2.0 mass%, preferably 0.005 to 1.5 mass%, and more preferably 0.01 to 1.0 mass%. Component A: Solid oil with a melting point of 50 to 120°C Component B: Liquid oil Component C: A nonionic surfactant having an HLB value of 8 to 15 (preferably 8 to 14, more preferably 8 to 13). Component D: Silica Ingredient E: Sea silt Component F: Cationic polymer [2] The solid oil-based cleansing cosmetic preparation according to [1], wherein the content ratio (mass ratio) of Component F relative to the content of Component E is 0.01 to 0.1, and preferably 0.01 to 0.05. [3] The solid oil-based cleansing cosmetic composition according to [1] or [2], wherein component F is at least one selected from the group consisting of polyquaternium-7, polyquaternium-39, polyquaternium-51 and guar hydroxypropyltrimonium chloride. [4] The solid oil-based cleansing cosmetic preparation according to any one of [1] to [3], wherein the content of component D is 1.0 to 3.0 mass%, the content of component E is 0.5 to 10 mass%, and the content of component F is 0.01 to 1.0 mass%. [5] The solid oil-based cleansing cosmetic preparation according to any one of [1] to [4], further comprising 0.1 to 5.0% by mass, and preferably 0.5 to 2.0% by mass, of water.

[0012] The solid oil-based cleansing cosmetic of the present invention is characterized in that it contains predetermined amounts of silica (component D), sea silt (component E), and a cationic polymer (component F) in a framework component of the solid oil-based cleansing cosmetic, which is composed of a solid oil (component A) having a melting point of 50 to 120°C, a liquid oil (component B), and a nonionic surfactant (component C) having an HLB value of 8 to 15.

[0013] The solid oil-based cleansing cosmetic of the present invention contains sea silt (component E), which is believed to contribute to improving dirt removal performance and maintaining a low friction state for a long time. In addition, the solid oil-based cleansing cosmetic of the present invention contains silica (component D) and cationic polymer (component F), which is believed to contribute to improving the dispersibility of sea silt by preventing sea silt from flocculating and settling. Furthermore, the content ratio (mass ratio) of component F to the content of component E is 0.01 to 0.1, which is believed to contribute to suppressing the flocculation and settling of sea silt. These contributions are believed to work together to obtain a solid oil-based cleansing cosmetic that is excellent in maintaining a low friction state for a long time and suppressing the flocculation and settling of sea silt.

[0014] <Definition / Measurement method> [Solid oil-based cleansing cosmetics] The solid oil-based cleansing cosmetic of the present invention is solid at 25°C. Here, solid means that it does not have fluidity, and includes paste and gel. The shape of the solid oil-based cleansing cosmetic of the present invention is not particularly limited, and examples include stick, rod, plate, and those poured into containers such as jars. Oil means that oil is the continuous phase. The solid oil-based cleansing cosmetic of the present invention preferably does not substantially contain water. Here, substantially not containing means that it does not contain at all, or even if it does contain, it is a small amount that does not affect the present invention, and the content is preferably, for example, 5% or less.

[0015] Liquid oils include oils that have fluidity at 25°C, semi-solid oils with a melting point below 50°C, and volatile oils with a boiling point below 260°C.

[0016] In this specification, the melting point is measured in accordance with the General Test Method, Melting Point Determination Method No. 2, of the Standards for Quasi-Drug Ingredients.

[0017] The specific surface area in this specification is a value calculated by the BET method using a commercially available measuring device that utilizes the gas adsorption phenomenon.

[0018] In this specification, the HLB value can be calculated by the Griffin method, that is, HLB value=20×sum of formula weights of hydrophilic moieties / molecular weight.

[0019] The volume-based median diameter can be determined by a commercially available measuring device that uses a laser analysis / scattering particle size distribution measurement method. For example, it can be the value measured by the "MT Microtrac MT3000II Series" (manufactured by Microtrac Bell Co., Ltd.).

[0020] Components A to F, which are essential components of the solid oil-based cleansing cosmetic preparation of the present invention, will be described below.

[0021] [Component A] Component A is a solid oil that is solid at 25° C. and has a melting point of 50 to 120° C. Here, "solid at 25° C." means that the oil has no fluidity at 25° C.

[0022] From the viewpoint of the ability to mold into a uniform solid form during preparation (moldability) and from the viewpoint of stability over time, the melting point of component A is preferably 50°C or higher, more preferably 55°C or higher, and even more preferably 60°C or higher. Furthermore, from the viewpoints of the ease of removal from fingers during use and the feel upon application (usage feel), the melting point of component A is preferably 120°C or lower, more preferably 115°C or lower, and even more preferably 110°C or lower.

[0023] Examples of component A include wax esters such as animal and vegetable waxes, mineral waxes, and hydrocarbon waxes.

[0024] Examples of the animal and vegetable waxes include carnauba wax, sunflower seed wax, candelilla wax, Japan wax, beeswax, rice wax, rice bran wax, shellac wax, and spermaceti wax.

[0025] The mineral waxes include montan wax.

[0026] The hydrocarbon wax may be a petroleum-derived wax or a synthetic wax, and examples of the hydrocarbon wax include ceresin, ozokerite, paraffin wax, microcrystalline wax, polyethylene wax, ethylene-propylene copolymer, and Fischer-Tropsch wax (synthetic wax).

[0027] As component A, from the viewpoint of obtaining a uniform solid oil-based cleansing cosmetic composition that is less susceptible to oxidation when heated, hydrocarbon waxes are preferred, and microcrystalline waxes and Fischer-Tropsch waxes (synthetic waxes) are more preferred.

[0028] The content of component A in the solid oil-based cleansing cosmetic of the present invention is 4.0 to 15% by mass, preferably 5.0 to 12% by mass, and more preferably 6.0 to 9.0% by mass. When the content is 4.0% by mass or more, the moldability is excellent and the effect of suppressing the settling of sea silt is excellent. When the content is 15% by mass or less, the ease of rinsing and the refreshing feeling after use are excellent, and collapse during transportation due to excessive hardening can be suppressed. The content of component A is the total content of all components A in the solid oil-based cleansing cosmetic of the present invention.

[0029] The above-mentioned component A contained in the solid oil-based cleansing cosmetic composition of the present invention may contain only one type, or two or more types.

[0030] [Component B] Component B is a liquid oil. By using component B, a solid oil-based cleansing cosmetic composition that is excellent in uniformity, massaging properties, ease of rinsing, and refreshing feeling after use can be obtained.

[0031] Examples of component B include ester oils, animal and vegetable oils, hydrocarbon oils, silicone oils, higher fatty acids, and higher alcohols.

[0032] Examples of the ester oils include isocetyl isostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, pentaerythrityl tetraoctanoate, tri-2-heptylundecanoic acid glyceride, diisobutyl adipate, 2-hexyldecyl sebacate, glycerin trioctanoate, glycerin triisopalmitate, diisostearyl malate, isopropyl myristate, 2-octyldodecyl oleate, hexyldecyl dimethyloctanoate, 2-hexyldecyl myristate, myristyl myristate, octyldodecyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptylundecyl palmitate, stearic acid butyl, isocetyl stearate, decyl oleate, dodecyl oleate, oleyl oleate, myristyl lactate, cetyl lactate, cholesteryl 12-hydroxystearate, castor oil fatty acid methyl ester, 2-ethylhexyl succinate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, diisopropyl sebacate, di-2-ethylhexyl sebacate, neopentyl glycol dicaprate, neopentyl glycol dioctanoate, glycerin tri-2-ethylhexanoate, glycerin trimyristate, trimethylolpropane triisostearate, glyceryl tri-2-ethylhexanoate, triglycerin, isopropyl myristate, hexyl laurate, diethyl phthalate, dibutyl phthalate, dioctyl succinate, fluorine-modified ester oil, trioctanoin, tripropylene glycol dipivalate, and the like.

[0033] Examples of the animal and vegetable oils include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, camellia oil, castor oil, safflower oil, apricot kernel oil, cinnamon oil, jojoba oil, grape oil, sunflower oil, almond oil, rapeseed oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil, cottonseed oil, soybean oil, peanut oil, tea seed oil, evening primrose oil, egg yolk oil, beef leg fat, and liver oil.

[0034] Examples of the hydrocarbon oil include α-olefin oligomer, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, liquid paraffin, synthetic squalane, vegetable squalane, polybutene, hydrogenated polyisobutene, and petrolatum.

[0035] Examples of the silicone oil include chain silicones such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane; cyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; amino-modified silicone oil, polyether-modified silicone oil, carboxy-modified silicone oil, alkyl-modified silicone oil, ammonium salt-modified silicone oil, and fluorine-modified silicone oil.

[0036] Examples of the higher fatty acids include oleic acid, tall oil fatty acid, and isostearic acid.

[0037] Examples of the higher alcohol include lauryl alcohol, oleyl alcohol, isostearyl alcohol, octyldodecanol, and jojoba alcohol.

[0038] The content of component B in the solid oil-based cleansing cosmetic of the present invention is 50-90% by mass, preferably 60-88% by mass, and more preferably 70-86% by mass. When the content is 50% by mass or more, the cleansing cosmetic does not become too hard, preventing poor finger removal during use, and the cleansing cosmetic has excellent spreadability when applied and excellent dirt removal ability. When the content is 90% by mass or less, the cleansing cosmetic has excellent moldability as a solid cleansing cosmetic. The content of component B is the total content of all components B in the solid oil-based cleansing cosmetic of the present invention.

[0039] The component B contained in the solid oil-based cleansing cosmetic composition of the present invention may contain one type alone or two or more types.

[0040] [Component C] Component C is a nonionic surfactant having an HLB value of 8 to 15. By using component C, it is possible to obtain a solid oil-based cleansing cosmetic preparation that has excellent makeup compatibility during use, is easy to wash off, and leaves a refreshing feeling after use.

[0041] The HLB value of ingredient C is 8 to 15, preferably 8 to 14, and more preferably 8 to 13. When the HLB value is within the above range, the makeup blends well during use and is easily washed off.

[0042] Component C is not particularly limited as long as it is a nonionic surfactant having an HLB value of 8 to 15, and examples thereof include polyglycerin fatty acid esters, sorbitan fatty acid esters, monoglycerin fatty acid esters, and alkylene oxide adducts thereof, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenols, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene alkylphenyl formaldehyde condensates, polyoxyethylene sterol and derivatives thereof, polyoxyethylene lanolin and derivatives thereof, polyoxyethylene beeswax derivatives, sugar esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene castor oil.

[0043] From the viewpoint of usability, it is preferable that Component C contains a polyglycerol fatty acid ester. Examples of the polyglycerol fatty acid ester include polyglyceryl-6 dicaprate, polyglyceryl-10 dioleate, polyglyceryl-6 caprylate, and polyglyceryl-2 caprate.

[0044] The content of component C in the solid oil-based cleansing cosmetic of the present invention is 5.0 to 30% by mass, preferably 6.0 to 20% by mass, and more preferably 8.0 to 15% by mass. When the content is 5.0% by mass or more, the cosmetic blends well with makeup cosmetics during use and is easy to wash off. When the content is 30% by mass or less, the cosmetic blend is excellent in terms of ease of removal from fingers during use and feel (usage sensation) during application.

[0045] The above-mentioned component C contained in the solid oil-based cleansing cosmetic composition of the present invention may contain only one type, or two or more types.

[0046] [Component D] Component D is silica. By using Component D, it is possible to suppress the settling of sea silt and provide a solid oil-based cleansing cosmetic composition that has excellent massaging properties during use.

[0047] Component D is not particularly limited, but known or commonly used silica (silicic anhydride) can be used. Component D may be silicic anhydride (hydrophilic silica) that has not been hydrophobized, or may be hydrophobized silicic anhydride. Component D may also be silica that has been surface-treated with an amino acid, an ester, lecithin, or the like. Component D may also be so-called easily disintegrating silica particles. Component D may also be fine amorphous silica called fumed silica (sometimes called fumed silica).

[0048] The hydrophobic silicic anhydride is a substance obtained by hydrophobizing silicic anhydride (for example, untreated silicic anhydride). Examples of the treating agent used in the hydrophobizing treatment include organic silyl compounds and silicone compounds. Examples of the organic silyl compounds include methyltrichlorosilane, dimethyldichlorosilane, trimethylchlorosilane, hexamethyldisilazane, methyltrialkoxysilane, dimethyldialkoxysilane, trimethylalkoxysilane, ethyltrichlorosilane, propyltrichlorosilane, hexyltrichlorosilane, long-chain alkyltrichlorosilane, ethyltrialkoxysilane, propyltrialkoxysilane, hexyltrialkoxysilane, long-chain alkyltrialkoxysilane, methacrylsilane, fluoroalkylsilane, and perfluoroalkylsilane. Examples of the silicone compounds include dimethylpolysiloxane (silicone oil), methylphenylpolysiloxane, methylhydrogenpolysiloxane, and amino-modified silicone. A known method can be used as the hydrophobizing treatment method. The hydrophobic treatment method may be a liquid phase method, a gas phase method, an autoclave method, etc. Fumed silica can be obtained, for example, by hydrolyzing a raw material such as silicon tetrachloride at a high temperature in an oxyhydrogen flame.

[0049] Preferred examples of the hydrophobic silicic anhydride include dimethylsiloxylated silicic anhydride, trimethylsiloxylated silicic anhydride, octylsiloxylated silicic anhydride, silicone oil-treated silicic anhydride, and methacrylsiloxylated silicic anhydride.

[0050] The specific surface area of ​​the above silica is 50m 2 / g or more is preferable, and 100m 2 The specific surface area of ​​the silica is 1000 m 2 / g or less is preferable, and 700m 2 / g or less.

[0051] The content of Component D in the solid oil-based cleansing cosmetic of the present invention is 0.1 to 5.0% by mass, preferably 0.5 to 4.0% by mass, and more preferably 1.0 to 3.0% by mass. When the content is 0.1% by mass or more, the settling of sea silt can be suppressed, and when the content is 5.0% by mass or less, the feeling during use is excellent.

[0052] The above-mentioned component D contained in the solid oil-based cleansing cosmetic composition of the present invention may contain only one type, or two or more types.

[0053] [Component E] Component E is sea silt. Sea silt is marine sediment (sea mud) and is also called marine silt. By incorporating component E into the cleansing cosmetic, the sea silt adsorbs makeup stains and sebum stains, resulting in a solid oil-based cleansing cosmetic with superior cleansing power. By incorporating sea silt into the cleansing cosmetic, it is possible to prevent the cosmetic from becoming oily in a short time during use, and to create a cleansing cosmetic that maintains a low friction state for a long time.

[0054] The sea silt of component E preferably has a predetermined volumetric median diameter (hereinafter also simply referred to as median diameter), and for example, from the viewpoint of excellent ability to adsorb makeup stains and sebum stains, the median diameter is preferably 50 μm or less, more preferably 10 μm or less, and even more preferably 8 μm or less. Also, 6 μm or more is preferable.

[0055] Sea silt can be obtained, for example, from Angkor-An Co., Ltd. under the name Marine Silt (registered trademark).

[0056] The content of component E in the solid oil-based cleansing cosmetic of the present invention is 0.1 to 20% by mass, preferably 0.2 to 15% by mass, and more preferably 0.5 to 10% by mass. When the content is 0.1% by mass or more, the effect of containing sea silt is obtained. Also, when the content is 20% by mass or less, it is excellent in terms of moldability and usability. The content of component E is the total content of all components E in the solid oil-based cleansing cosmetic of the present invention.

[0057] [Component F] Component F is a cationic polymer. As described above, when sea silt is blended into a solid oil-based cleansing cosmetic composition consisting of solid oil, liquid oil, and a nonionic surfactant with a specific HLB value, the problem of aggregation and sedimentation of the sea silt occurs, but by blending a specific amount of component F, the aggregation and sedimentation of the sea silt can be suppressed.

[0058] Component F is not particularly limited and may be appropriately selected depending on the purpose, but is preferably a hydrophilic polymer having an amino group or a quaternary ammonium group. Examples of such a polymer include natural polysaccharides such as cellulose or modified natural polysaccharides having one or more selected from a quaternary ammonium structure, a tertiary amine structure, a secondary amine structure, and a primary amine structure, and copolymers containing acrylamide or diallyldialkyl quaternary ammonium salt having a cationic group in the side chain as a polymerization unit.

[0059] Examples of component F include cationic cellulose, cationic cellulose derivatives, cationic starch, cationic guar gum, cationic guar gum derivatives, homopolymers of diallyl quaternary ammonium salts, quaternized polyvinylpyrrolidone derivatives, polyglycol polyamine condensates, dialkyl diallyl ammonium salt / acrylamide copolymers, vinylimidazolium trichloride / vinylpyrrolidone copolymers, hydroxyethyl cellulose / dimethyl diallyl ammonium chloride copolymers, vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymers, polyvinylpyrrolidone / alkylaminoacrylate copolymers, polyvinylpyrrolidone / alkylaminoacrylate / vinylcaprolactam copolymers, vinylpyrrolidone / methacrylamidopropyl trimethylammonium chloride copolymers, alkylacrylamide / acrylate / alkylaminoalkylacrylamide / polyethylene glycol methacrylate copolymers, methacryloyloxyethyl phosphorylcholine / methacrylate copolymers, etc. These may be used alone or in combination of two or more. Among these, cationic guar gum derivatives such as guar hydroxypropyltrimonium chloride, dimethyldiallylammonium chloride / acrylamide copolymer, acrylic acid / dimethyldiallylammonium chloride / acrylamide copolymer, and 2-methacryloyloxyethylphosphorylcholine / butyl methacrylate copolymer are preferred because they have a superior effect of inhibiting the coagulation of sea silt.

[0060] As component F, a suitably synthesized product or a commercially available product may be used. Examples of commercially available products include cationic cellulose such as Merquat 10 (display name "Polyquaternium-10", manufactured by Lubrizol); dimethyldiallylammonium chloride polymers such as Merquat 100 and Merquat 106 (both display names "Polyquaternium-6", manufactured by Lubrizol); dimethyldiallylammonium chloride / acrylamide copolymers such as Merquat 550, Merquat 550PR, Merquat S, Merquat 2200, and Merquat 740 (all display names "Polyquaternium-7", manufactured by Lubrizol); acrylic acid / dimethyldiallylammonium chloride copolymers such as Merquat 280, Merquat 281, and Merquat 295 (all display names "Polyquaternium-22", manufactured by Lubrizol); and Merquat PLUS. Examples of such copolymers include acrylic acid / dimethyldiallylammonium chloride / acrylamide copolymers such as No. 3330 (labeled as "Polyquaternium-39", manufactured by Lubrizol); and 2-methacryloyloxyethyl phosphorylcholine / butyl methacrylate copolymers such as LIPIDURE-PMB (labeled as "Polyquaternium-51", manufactured by NOF Corp.). Among these, from the viewpoint of inhibiting the aggregation of sea silt, guar hydroxypropyltrimonium chloride, polyquaternium-7, polyquaternium-39, and polyquaternium-51 are preferred. In particular, cationic polymers selected from polyquaternium-7 and polyquaternium-39 are preferred.

[0061] The content of component F in the solid oil-based cleansing cosmetic of the present invention is 0.001-2.0% by mass, preferably 0.005-1.5% by mass, and more preferably 0.01-1.0% by mass. By having the content of the cationic polymer in the above range, sea silt is uniformly dispersed and its aggregation can be suppressed, which is advantageous in terms of suppressing the generation of sediment and separation of the cosmetic. When the content is 0.001% by mass or more, aggregation and sedimentation of sea silt can be suppressed. In addition, when the content is 2.0% by mass or less, it is excellent in terms of moldability and usability. The content of component F is the total content of all components F in the solid oil-based cleansing cosmetic of the present invention.

[0062] The content ratio (mass ratio) of Component F relative to the content of Component E in the solid oil-based cleansing cosmetic composition of the present invention is preferably 0.01 to 0.1, and more preferably 0.01 to 0.05. When the content ratio of Component F relative to the content of Component E is within the above range, the effect of inhibiting aggregation and precipitation of Component E is more excellent.

[0063] The above-mentioned component F contained in the solid oil-based cleansing cosmetic composition of the present invention may contain only one type, or two or more types.

[0064] [Other ingredients] In addition to Components A to F, the solid oil-based cleansing cosmetic composition of the present invention may contain other optional components within the scope of not impairing the effects of the present invention.

[0065] Examples of other components include water, surfactants other than component C, powders other than components D to F, dyes, oil-based gelling agents, oil-soluble resins, polyhydric alcohols, lower alcohols, whitening agents, activators, blood circulation promoters, antiseborrheic agents, anti-inflammatory agents, refreshing agents (also known as cooling agents), bactericidal components, antiperspirant components, ultraviolet absorbers, ultraviolet scattering agents, moisturizers, fragrances, antioxidants, preservatives, antifoaming agents, and additives such as various extracts.

[0066] The water is not particularly limited, but purified water is preferred. A solid oil-based cleansing cosmetic is generally composed of solid oil, liquid oil, and nonionic surfactant, and does not contain water because of the risk of separation or precipitation. When the solid oil-based cleansing cosmetic of the present invention contains water, the content is preferably 0.1 to 5.0% by mass, more preferably 0.5 to 2.0% by mass. When the content is 0.1% by mass or more, the ease of rinsing is excellent. When the content is 5.0% by mass or less, the cleansing cosmetic is excellent in stability during storage. The content is the total content of all water in the solid oil-based cleansing cosmetic of the present invention.

[0067] [Manufacturing method] The manufacturing method of the solid oil-based cleansing cosmetic of the present invention is not particularly limited, and can adopt the manufacturing method of known solid oil-based cleansing cosmetic.The manufacturing method of the solid oil-based cleansing cosmetic of the present invention can be, for example, the method of mixing each component while heating to obtain a mixed liquid, and then cooling and solidifying the obtained mixed liquid.The method of mixing each component can be, for example, the method of using a stirring device such as a dispersing mixer and a paddle mixer.However, the present invention is not limited to only the above-mentioned manufacturing method.

[0068] The solid oil-based cleansing cosmetic composition of the present invention is preferably filled in a container from which it can be easily taken out, such as a wide-mouthed jar or a tube.

[0069] [Apply] The area to which the solid oil-based cleansing cosmetic of the present invention is applied is not particularly limited, and examples thereof include the face (forehead, nose, nostrils, cheeks, mouth, etc.), the body (arms, elbows, back of hands, fingertips, feet, knees, heels, neck, armpits, back, etc.), etc. Among these, the face is particularly preferred. EXAMPLES

[0070] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples. The amounts listed in the tables are the pure amounts of each component, and are expressed in "mass %" unless otherwise specified. In addition, "-" in the amounts listed in the tables indicates that the component is not included.

[0071] Examples and Comparative Examples [Preparation of each sample] According to the compositions shown in Table 1, solid oil-based cleansing cosmetic compositions of Examples and Comparative Examples were prepared by ordinary methods and subjected to the following evaluation tests. The evaluation results are also shown in Table 1.

[0072] Details of the main ingredients listed in the table are as follows: <Component A> Synthetic wax: Product name "CireWax 80", manufactured by Cirebelle Fine Chemicals, melting point: 61-67℃ <Component B> Ethylhexyl palmitate: Product name "NIKKOL TGI-20", manufactured by Nikko Chemicals Co., Ltd. Cetyl ethylhexanoate: Trade name "NIKKOL-CIO", manufactured by Nikko Chemicals Co., Ltd. <Component C> PEG-20 glyceryl triisostearate: Trade name "NIKKOL TGI-20", manufactured by Nikko Chemicals Co., Ltd., HLB: 8 PEG-8 glyceryl isostearate: Trade name "Brownon RGL-8MISE", manufactured by Aoki Oil Industries Co., Ltd., HLB: 11.5 <Component D> Silica: Product name "AEROSIL 200", manufactured by Nippon Aerosil Co., Ltd., BET specific surface area: 175-225 m 2 / g <Component E> Marine silt: Product name "Marine Silt", manufactured by Angkor-An Co., Ltd., median diameter 7 μm <Component F> Cationic polymer 1: Polyquaternium-7 (dimethyldiallylammonium chloride / acrylamide copolymer), trade name "Merquat 550PR", manufactured by Lubrizol Cationic polymer 2: Polyquaternium-39 (acrylic acid / dimethyldiallylammonium chloride / acrylamide copolymer), trade name "Merquat PLUS 3330", manufactured by Lubrizol Cationic polymer 3: Polyquaternium-51 (2-methacryloyloxyethyl phosphorylcholine / butyl methacrylate copolymer), trade name "LIPIDURE-PMB", manufactured by NOF Corporation Cationic polymer 4: Guar hydroxypropyltrimonium chloride, trade name "Labor Gum CG-M", manufactured by MP Gokyo Food & Chemical Co., Ltd. <Other ingredients> Kaolin: Product name "Kaolin JP-100", manufactured by Takehara Chemical Industry Co., Ltd. Clay mixture: "French Green", manufactured by Toyo Science Co., Ltd., a mixture of illite, kaolin, and montmorillonite Highly polymerized PEG: Trade name "Alcox E-30", manufactured by Meisei Chemical Industry Co., Ltd., weight average molecular weight 400,000 to 550,000 PEG-15 cocopolyamine: Trade name "DEHYQUART H81", manufactured by BASF Japan Ltd.

[0073] [Formulation evaluation] After preparation, the appearance of each of the solid oil-based cleansing cosmetic compositions of the Examples and Comparative Examples was visually observed and evaluated according to the following evaluation criteria.

[0074] <Agglutination> A (Excellent): No agglomerates were observed. B (Good): Very few aggregates can be seen. C (poor): Aggregates are clearly visible.

[0075] <Subsidence> A (Excellent): No sediment was observed. B (Good): Sediment can be seen on some parts of the bottom. C (Fair): Sediment can be seen over almost the entire bottom surface. D (Poor): Almost all of the marine silt has turned into sediment and separated into two layers: a layer of sediment and another layer.

[0076] [Usability evaluation] Approximately 0.5 g of each of the solid oil-based cleansing cosmetics obtained in the Examples and Comparative Examples was spread on the inside of the forearm, cleansed for 30 seconds by drawing small circles with the fingertips, and then washed off with warm water. The durability of the low friction state was evaluated according to the following evaluation criteria. The evaluation was determined by a panel of three expert evaluators. <Sustained low friction state> A (Excellent): The low friction state continued for 15 seconds or more. B (Good): The low friction state continued for 10 seconds or more but less than 15 seconds. C (usable): The low friction state lasted for less than 10 seconds. D (poor): A large amount of sediment was generated, making it difficult to obtain a uniform composition and making it impossible to perform an accurate evaluation.

[0077] [Table 1]

[0078] Further, formulation examples of solid oil-based cleansing cosmetics that can be used in the present invention are shown below.

[0079] [Table 2]

Claims

1. A solid oil-based cleansing cosmetic containing the following components A to F, in which the content of component A is 4.0 to 15% by mass, the content of component B is 50 to 90% by mass, the content of component C is 5.0 to 30% by mass, the content of component D is 0.1 to 5.0% by mass of the solid oil-based cleansing cosmetic, the content of component E is 0.1 to 20% by mass, and the content of component F is 0.001 to 2.0% by mass. Component A: solid oil with a melting point of 50 to 120°C Component B: Liquid oil Component C: A nonionic surfactant with an HLB value of 8 to 15 Component D: Silica Component E: Sea silt Component F: Cationic polymer

2. The solid oil-based cleansing cosmetic according to claim 1, wherein the content ratio (mass ratio) of component F to the content of component E is 0.01 to 0.

1.

3. 3. The solid oil-based cleansing cosmetic according to claim 1, wherein component F is at least one selected from the group consisting of polyquaternium-7, polyquaternium-39, polyquaternium-51 and guar hydroxypropyltrimonium chloride.

4. The solid oil-based cleansing cosmetic according to claim 1, wherein the content of component D is 1.0 to 3.0% by mass, the content of component E is 0.5 to 10% by mass, and the content of component F is 0.01 to 1.0% by mass.

5. The solid oil-based cleansing cosmetic composition according to claim 1 or 4, further comprising 0.1 to 5.0% by mass of water.

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