Multi-layered cosmetics

Abstract

Since it separates into at least an emulsion layer and an aqueous layer during standing, it has excellent aesthetic properties. When used, it can be uniformly redispersed by gently shaking, so it also has excellent usability. In addition, it has good storage stability, and further provides a multi-layer cosmetic excellent in the softness of the back skin. 【Means for Solving the Problem】 The following components (A) to (G): (A) Phospholipid (B) Cholesterol and / or phytosterol (C) Phosphoric acid-based surfactant (D) Oil agent (E) Sodium polyaspartate (F) Water-swelling clay mineral (G) Water A multi-layer cosmetic containing the above components.

Description

Technical Field

[0001] The present invention relates to a multi-layer cosmetic that separates into at least an emulsion layer and an aqueous layer during standing, and is shaken before use. The multi-layer cosmetic has a fast layer separation rate during standing, excellent redispersibility of the emulsion layer during use, and good storage stability and usability.

Background Art

[0002] In recent years, due to the increasing demand for skin care with a minimum number of steps without using many skin care items, there is a need for an item with a usability similar to a combination of lotion and emulsion. As one dosage form that meets this need, there is a multi-layer cosmetic in which one layer is an emulsion layer and the other is an aqueous layer.

[0003] Multi-layer cosmetics include types such as liquid / liquid layers and liquid / solid layers. They are shaken slightly during use and used as a single layer, and are applied to various cosmetics. Examples of liquid / liquid layer type multi-layer cosmetics include oil layer / water layer and emulsion layer / liquid layer (for example, Patent Document 1). By slightly shaking during use, emulsion droplets are (re)dispersed and used. Both the dispersibility during use and the aesthetic appearance during standing are important factors in enhancing the added value of the product.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the technology described in Patent Document 1, when seeking to retain moisture on the skin after use, the redispersibility of the emulsion layer tends to deteriorate, or the separation rate into multiple layers slows down. For example, when considering use in the morning and evening, it does not satisfy the requirement of a beautifully separated appearance even when used twice a day.

[0006] Therefore, the present invention aims to provide a multilayer cosmetic composition that separates quickly after standing, exhibits good redispersibility during use, and leaves the skin feeling soft. Furthermore, it aims to provide a multilayer cosmetic composition with excellent storage stability. [Means for solving the problem]

[0007] To achieve the aforementioned objective, the inventors conducted diligent research and found that by combining phospholipids, cholesterol and / or phytosterols, phosphate-based surfactants, oils, sodium polyaspartate, and bentonite, a multilayer cosmetic composition with excellent redispersibility during use and softness of the skin after application can be obtained, thus completing the present invention.

[0008] In other words, the present invention provides the following: [1] The following ingredients (A) to (G): (A) Phospholipids (B) Cholesterol and / or phytosterols (C) Phosphate-based surfactants (D) Oils (E) Sodium polyaspartate (F) Water-swellable clay minerals (G)Water A multi-layer cosmetic containing [ingredient name], which separates into at least an emulsion layer and an aqueous layer when left standing, and is used after shaking. [2] The multilayer cosmetic composition according to [1], wherein the content of component (F) is 0.01 to 0.5% by mass of the total amount of the cosmetic composition. [3] A multilayer cosmetic composition according to [1] or [2], wherein the mass ratio (E) / (F) of component (E) to component (F) is 1 to 40. [4] The following ingredients (A) to (G): (A) Phospholipids (B) Cholesterol and / or phytosterols (C) Phosphate-based surfactants (D) Oils (E) Sodium polyaspartate (F) Water-swellable clay minerals (G)Water A method for producing a multilayer cosmetic containing, which separates into at least an emulsion layer and an aqueous layer when left to stand, and is used after shaking, characterized in that, after emulsifying components (A) to (D) and a portion of component (G), components (E) and (F) which have been previously swollen with the remainder of component (G) are added. [Effects of the Invention]

[0009] The multilayer cosmetic composition of the present invention has excellent aesthetics because it separates into at least an emulsion layer and an aqueous layer when left standing, and it is also easy to use because it redisperses uniformly when lightly shaken before use. Furthermore, it has good storage stability and leaves the skin feeling soft. [Modes for carrying out the invention]

[0010] The configuration of the present invention will be described below. The component (A) phospholipid used in the present invention is a lipid having a phosphate ester moiety in its molecular structure. Specifically, examples include phosphatidylcholine, phosphatidylethanolamine, sphingomyelin, phosphatidylserine, phosphatidylinositol, phosphatidylglycerol, and phosphatidic acid. Among these, phosphatidylcholine and phosphatidylethanolamine are preferred from the viewpoint of the stability of multilayer cosmetics, and phosphatidylcholine is more preferred. Specifically, a mixture of the above phospholipids, whose composition differs depending on their origin, can be used. It is not particularly limited as long as it is used in cosmetics in general, but examples include soybean-derived phospholipids, soybean-derived hydrogenated phospholipids, soybean-derived lysophospholipids, soybean-derived hydrogenated lysophospholipids, egg yolk-derived phospholipids, egg yolk-derived hydrogenated phospholipids, egg yolk-derived lysophospholipids, egg yolk-derived hydrogenated lysophospholipids, etc., and one or more of these can be used as needed. From the viewpoint of emulsification stability, hydrogenated phospholipids derived from soybeans and hydrogenated lysophospholipids derived from soybeans are preferred, and commercially available products such as NIKKOL Resinol S-10E (manufactured by Nikko Chemicals Co., Ltd.), Basis LS-60HR (manufactured by Nisshin Oillio Group Co., Ltd.), and HSL-70 (manufactured by YMC Co., Ltd.) can be used.

[0011] The content of component (A) in the present invention is not particularly limited, but as a lower limit, it is preferably 0.1% by mass (hereinafter simply referred to as "%") or more, more preferably 0.2% or more, and even more preferably 0.3% or more, relative to the total amount of the multilayer cosmetic composition. As an upper limit, it is preferably 1.5% or less, more preferably 1% or less, and even more preferably 0.7% or less. As a range, it is preferably 0.1 to 1.5%, more preferably 0.2 to 1%, and even more preferably 0.3 to 0.7%. A content of component (A) within this range is preferable because it provides good redispersibility of the emulsion layer, as well as excellent storage stability and softness of the skin after use.

[0012] The component (B) cholesterol and / or phytosterol used in the present invention is a substance having a sterol skeleton and is an ingredient that improves the stability and feel of the emulsion layer of multilayer cosmetics. Cholesterol is generally purified from natural products, and cholesterol purified from any natural product can be used in the present invention. Phytosterols can be any that are generally classified as plant sterols, and preferably contain campesterol, sitosterol, stigmastanol, etc., and mixtures thereof can also be used. Examples of commercially available products include Marine Cholesterol (manufactured by Nippon Suisan Kaisha, Ltd.) and Phytosterol QI (manufactured by Eisai Food Chemical Co., Ltd.), and one or more of them may be used in combination.

[0013] The content of component (B) in the present invention is not particularly limited, but is preferably 0.005% or more, more preferably 0.01% or more, and 0.2% or less, and more preferably 0.1% or less, relative to the total amount of the multilayer cosmetic composition. The range is preferably 0.005 to 0.2%, and more preferably 0.01 to 0.1%. A content of component (B) within this range is preferable because it provides good redispersibility of the emulsion layer, as well as excellent storage stability and softness of the skin after use.

[0014] Furthermore, in the present invention, for the sake of ease of the manufacturing process and storage stability, a compound of component (A) and component (B) may be used in advance. Examples of such commercially available products include PHYTOCOMPO-PP and COMPOSITE-PC (both manufactured by Nippon Seika Co., Ltd.).

[0015] The (C) phosphoric acid surfactant used in the present invention refers to a compound obtained by phosphorylating the terminal of a higher alcohol or its polyoxyalkylene derivative, and in the case of a monoester or diester, it includes a salt in which the remaining hydroxyl group is neutralized with an appropriate alkali. As the polyoxyalkylene group, a polyoxyethylene group with a polymerization degree (n) of 2 to 10 is preferable, and as the number of added moles of the polyoxyethylene group in one molecule, 6 to 30 moles is preferable. Specifically, for example, polyoxyethylene lauryl ether phosphate, polyoxyethylene myristyl ether phosphate, polyoxyethylene cetyl ether phosphate, polyoxyethylene stearyl ether phosphate, polyoxyethylene alkyl (10-15) ether phosphate, polyoxyethylene dialkyl (12-15) ether phosphate (alias: di(C12-15) paleth-n phosphate), polyoxyethylene tricetyl ether phosphate, polyoxyethylene tristearyl ether phosphate, and salts thereof can be mentioned. Examples of the salt include alkali metal salts such as sodium and potassium, basic amino acid salts such as L-arginine, L-histidine, and L-lysine, and alkanolamine salts such as triethanolamine.

[0016] Among these, from the viewpoint of storage stability, it is preferably one or more selected from the group consisting of polyoxyethylene lauryl ether phosphate (salt), polyoxyethylene cetyl ether phosphate (salt), and polyoxyethylene dialkyl (12-15) ether phosphate (salt). Commercially available products include HOSTAPHAT KW340D, HOSTAPHAT KL340D (both manufactured by Clariant Japan), Nikkol DDP-6, Nikkol DDP-8 (both manufactured by Nikko Chemicals Co., Ltd.), and the like.

[0017] The content of component (C) in the present invention is not particularly limited, but is preferably 0.01% or more, more preferably 0.05% or more, relative to the total amount of the multilayer cosmetic composition. The upper limit is preferably 0.2% or less, more preferably 0.15% or less, and even more preferably 0.1% or less. The range is preferably 0.01 to 0.2%, more preferably 0.01 to 0.15%, and even more preferably 0.05 to 0.1%. A content of component (C) within this range is preferable because it provides good storage stability, excellent redispersibility of the emulsion layer, and superior softness of the skin after use.

[0018] The oily agent of component (D) used in the present invention is not particularly limited as long as it is commonly used in cosmetics. For example, regardless of whether it is volatile or non-volatile, solid or liquid, or of any origin such as animal oil, vegetable oil, or synthetic oil, examples include oils and fats, hydrocarbons, higher fatty acids, ester oils, higher alcohols, and silicone oils, but component (B) is excluded. Component (D) can be selected and used individually or in combination of two or more as needed, but the overall property of component (D) is preferably liquid at 25°C. Specifically, the oils and fats include avocado oil, linseed oil, almond oil, olive oil, apricot kernel oil, hydrogenated oil, wheat germ oil, sesame oil, rice germ oil, rice bran oil, safflower oil, shea butter, soybean oil, corn oil, castor oil, hydrogenated castor oil, macadamia nut oil, beeswax, mink oil, cottonseed oil, coconut oil, hydrogenated coconut oil, and lanolin; the hydrocarbon oils include squalane, squalene, liquid paraffin, pristane, and polyisobutylene; and the higher fatty acids include stearic acid, behenic acid, undecylenic acid, oleic acid, linoleic acid, linolenic acid, isostearic acid, and 12-hydroxystearic acid.As ester oils, jojoba oil, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, oleyl oleate, octyldodecyl oleate, neopentyl glycol dicaprate, 2-ethylhexyl succinate, isocetyl stearate, butyl stearate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, cholesteryl hydroxystearate, dipentaerythritol fatty acid ester, diisostearyl malate, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-octyldodecyl myristate, 2- Hexyldecyl, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, 2-ethylhexyl methoxycinnamate, glyceryl tri-2-ethylhexanoate, glyceryl tri(caprylate / caprine)ate, glyceryl tricaprate, glyceryl triisostearate, diglyceryl diisostearate, diglyceryl triisostearate, diglyceryl tetraisostearate, decaglyceryl decaisostearate, glyceryl triisopalmitate, glyceryl trimiristate, diglyceryl isostearate myristate, tridecyl trimellitate, 2-octyldodecyl N-lauroyl-L-glutamate, phytostearyl-2-octyldodecyl N-lauroyl-L-glutamate, etc.; higher alcohols include octyldodecanol, stearyl alcohol, etc.;Examples of silicone oils include dimethylpolysiloxane, methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, etc. Among these, from the viewpoint of imparting softness to the skin after use, avocado oil, olive oil, wheat germ oil, jojoba oil, macadamia nut oil, squalane, liquid paraffin, cholesteryl hydroxystearate, glyceryl tri-2-ethylhexanoate, dimethylpolysiloxane, and methylphenylpolysiloxane can be exemplified as preferred ones.;

[0019] The content of component (D) in the present invention is not particularly limited, but as a lower limit, it is preferably 0.1% or more, more preferably 0.5% or more, and even more preferably 1% or more, based on the total amount of the multi-layer cosmetic. As an upper limit, it is preferably 6% or less, more preferably 5% or less, and even more preferably 4% or less. The range is preferably 0.1 to 6%, more preferably 0.5 to 5%, and even more preferably 1 to 4%. When the content of component (D) is within this range, the separation and redispersion properties of the emulsion layer are good, and it is more preferable because it also has excellent softness of the skin after use and storage stability.

[0020] Sodium polyaspartic acid, which is component (E) used in the present invention, forms an "emulsion layer" in the multi-layer cosmetic of the present invention by moderately soft-aggregating the emulsion droplets containing components (A) to (D), and it is a component capable of adjusting the feel. Component (E) is the sodium salt of a polymer obtained by polymerizing L-aspartic acid, D-aspartic acid, or a mixture thereof by an α or β bond. Also, the average molecular weight of component (E) is preferably 1,000 to 10,000, and particularly preferably 3,000 to 5,000. When the average molecular weight of component (E) is within this range, a multi-layer cosmetic with good separation rate and redispersion properties of the emulsion layer can be obtained. In the present invention, from the viewpoint of simplicity in the manufacturing process, a product in which component (E) is previously dissolved can be used. Examples of such commercially available products include Aquadew SPA-30 (manufactured by Ajinomoto Co., Inc.), which is a 30% aqueous solution.

[0021] The content of component (E) in the present invention is not particularly limited, but as a lower limit, it is preferably 0.1% or more, more preferably 0.5% or more, and even more preferably 1% or more, relative to the total amount of the multilayer cosmetic composition. As an upper limit, it is preferably 4% or less, more preferably 3.8% or less, and even more preferably 3.5% or less. As a range, it is preferably 0.1 to 4%, more preferably 0.5 to 3.8%, and even more preferably 1 to 3.5%. When the content of component (E) is within this range, the separation and redispersibility of the emulsion layer is good, and the softness of the skin after use is excellent, so it is more preferable.

[0022] The component (F) used in this invention, a water-swellable clay mineral, is a component that can mitigate excessive aggregation of the emulsion layer and improve redispersibility. Component (F) is not particularly limited as long as it is a clay mineral that swells with water, and those commonly used in cosmetics can be used. For example, those mainly composed of aluminum magnesium silicate, sodium magnesium silicate, etc. are examples. In addition, smectite is a suitable natural clay mineral, such as montmorillonite, hectorite, saponite, and stivunsite. Furthermore, bentonite mainly composed of montmorillonite can also be used, as can synthetic smectite and water-swellable fluorine mica, which are not obtained from natural sources. One or more of these can be used. Among these, selecting bentonite results in a product with better stability, ease of application, and ease of removal, making it highly usable. Examples of commercially available products containing such component (F) include Kunipia G-4, Smecton SA-2 (manufactured by Kunimine Industries Co., Ltd.), Lucentite SWN (manufactured by Coop Chemical Co., Ltd.), and Bentone MA, EW, LT, and RV (manufactured by Elementis Co., Ltd.).

[0023] The content of component (F) in the present invention is not particularly limited, but as a lower limit, it is preferably 0.01% or more, more preferably 0.03% or more, and even more preferably 0.05% or more, relative to the total amount of the multilayer cosmetic composition. As an upper limit, it is preferably 0.8% or less, more preferably 0.7% or less, and even more preferably 0.5% or less. As a range, it is preferably 0.01 to 0.8%, more preferably 0.03 to 0.7%, and even more preferably 0.05 to 0.5%. A content of component (F) within this range is more preferable because it is superior in terms of the redispersibility of the emulsion layer and the softness of the skin after use.

[0024] In the present invention, the mass ratio (E) / (F) of component (E) to component (F) is preferably 1 or more, and more preferably 3 or more, from the viewpoint of the softness of the skin after use. Furthermore, the mass ratio (E) / (F) is preferably 40 or less, and more preferably 38 or less, from the viewpoint of the redispersion of the emulsion layer and the softness of the skin after use.

[0025] The component (G) water used in the present invention is not particularly limited as long as it is commonly used in cosmetics. For example, purified water, hot spring water, deep sea water, or steam-distilled water from plants may be used, and one or more may be appropriately selected and used as needed. The content of component (G) in the present invention is not particularly limited, but it is preferably 85% to 99.8% of the total amount of the multilayer cosmetic.

[0026] In addition to the essential components mentioned above, the multilayer cosmetic composition of the present invention may also contain other components commonly used in cosmetics, such as aqueous components, powders, surfactants other than components (A) and (C), UV absorbers, antioxidants, bactericides, preservatives, fragrances, colorants, and cosmetic ingredients, to the extent that they do not impair the effects of the present invention.

[0027] Any water-soluble component may be used as the aqueous component. Examples include lower alcohols such as ethyl alcohol and isopropyl alcohol, glycols such as propylene glycol, 1,3-butylene glycol, dipropylene glycol, and polyethylene glycol, glycerols such as glycerin, diglycerin, and polyglycerin, and polyhydric alcohols such as ethylhexylglycerin and 1,2-alkanediol.

[0028] The powders are not particularly limited in terms of shape (plate-like, spindle-like, needle-like, etc.), particle size (fuzzy, fine, pigment-grade, etc.), particle structure (porous, non-porous, etc.), etc., and include inorganic powders, lustrous powders, organic powders, pigment powders, composite powders, etc. Specifically, examples include ultramarine, ultramarine blue, red iron oxide, yellow iron oxide, black iron oxide, titanium oxide, zinc oxide, aluminum oxide, cerium oxide, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, chromium oxide, chromium hydroxide, carbon black, aluminum silicate, magnesium silicate, aluminum magnesium silicate, mica, synthetic mica, synthetic sericite, sericite, talc, silica, silicon carbide, barium sulfate, boron nitride, etc., inorganic powders, bismuth oxychloride, titanium mica, aluminum powder, etc., stearin Examples of suitable powders include magnesium sulfate, zinc stearate, N-acyllysine, nylon powder, organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, silk powder, crystalline cellulose, and other organic powders; organic tar-based pigments, lake pigments and other pigment powders; polyethylene terephthalate-aluminum-epoxy laminated powder, polyethylene terephthalate-polyolefin laminated film powder, polyethylene terephthalate-polymethyl methacrylate laminated film powder, etc., and one or more of these can be used. These powders may also be compounded from one or more of these powders, or they may be surface-treated using known methods with fluorine compounds, silicone-based oils, metal soaps, surfactants, oils and fats, hydrocarbons, etc. Among these, silica and nylon powder can be exemplified as preferred from the viewpoint of improving redispersibility and easily obtaining a smooth feeling after use. Furthermore, the above powders may be incorporated into the emulsion layer during static separation, and the emulsion layer incorporating the powder will be located in the upper or lower part of the aqueous layer due to the difference in specific gravity with the aqueous layer. Alternatively, the above powder may settle in the aqueous layer during static separation.

[0029] As surfactants, any surfactant used in cosmetics is acceptable, including anionic surfactants such as stearic acid, inorganic or organic salts of fatty acids such as lauric acid, alkylbenzene sulfates, alkyl sulfonates, α-olefin sulfonates, dialkyl sulfosuccinates, α-sulfonated fatty acid salts, acylmethyl taurate salts, N-methyl-N-alkyl taurate salts, and N-acyl-N-alkyl amino acid salts; cationic surfactants such as alkylamine salts, polyamines and alkanoylamine fatty acid derivatives, alkylammonium salts, and alicyclic ammonium salts; and amphoteric surfactants such as N,N-dimethyl-N-alkyl-N-carboxymethylammonium betaine. Examples of nonionic surfactants include polyglycerin fatty acid esters, sucrose fatty acid esters, polyoxyethylene sorbitan fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycol fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene hydrogenated castor oil, fatty acid esters, polyoxyethylene fatty acid ethanolamide, polyoxyalkylene-modified silicones, and polyoxyalkylene alkyl copolymerized silicones. One or more of these can be used.

[0030] As UV absorbers, any of those commonly used in cosmetics will suffice. For example, benzophenone-based benzophenones include 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, sodium 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, and sodium 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5-sulfonate. Um, 2,4-dihydroxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2,4,6-trianilino-para-(carbo-2'-ethylhexyl-1'-oxy)-1,3,5-triazine, 2,4-bis[{4-(2-ethylhexyloxy)-2-hydroxy}phenyl]-6-(4-methoxyphenyl)-(1,3,5)-triazine, 2-2'-methylene-bis-{6-(2H-benzotriazol-2-yl)-4-(1,1,3 Examples include {3-tetramethylbutyl)phenol}, and PABA-based examples include p-aminobenzoic acid, ethyl p-aminobenzoate, glyceryl p-aminobenzoate, amyl p-dimethylaminobenzoate, 2-ethylhexyl p-dimethylaminobenzoate, ethyl p-dihydroxypropylbenzoate, hexyl 2-{4-(diethylamino)-2-hydroxybenzoyl}benzoate, and cinnamic acid-based examples include 2-ethylhexyl p-methoxycinnamate, 4 Examples include 2-ethoxyethyl methoxycinnamate, salicylic acid derivatives include 2-ethylhexyl salicylate, phenyl salicylate, homomenthyl salicylate, dibenzoylmethane derivatives include 4-tert-4'-methoxydibenzoylmethane, and 2-2'-methylene-bis-{6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol}, and one or more of these can be used. These can also be included in component (D).

[0031] The multilayer cosmetic composition of the present invention has an appearance when stored at rest, consisting of at least two layers, including an emulsion layer and an aqueous layer, and can be used temporarily as an oil-in-water liquid cosmetic composition by shaking before use. Therefore, the multilayer cosmetic composition of the present invention is manufactured by a conventional method for manufacturing oil-in-water emulsion compositions, and the manufacturing equipment is not limited. For example, by mixing (A) to (D), heating and dissolving as necessary, emulsifying with a portion of component (G) and a dispersion, and then adding components (E) and (F) that have been previously swollen with a portion of component (G), an oil-in-water emulsion composition is obtained. By filling this into a container and allowing it to stand, a multilayer cosmetic composition is obtained that separates into an emulsion layer and an aqueous layer.

[0032] The multilayer cosmetic composition of the present invention can be applied to skincare cosmetics such as lotions, serums, sunscreens, and massage products; scalp or hair cosmetics such as hair mists and hair styling products; and makeup cosmetics such as foundations and makeup bases. [Examples]

[0033] Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited in any way by these examples.

[0034] Examples 1-15 and Comparative Examples 1-5: Two-layer lotion A lotion was prepared according to the composition shown in Table 1 and the manufacturing method described below. The obtained samples were evaluated based on the following evaluation method. The results are also shown in Table 1.

[0035] [Table 1]

[0036] (Manufacturing method) A. A portion of component (16) is used to pre-swell components (12) and (13), respectively. B. Heat components (1) to (11) to 70°C and mix them uniformly. A portion of the component (16) heated to 70°C is added to B and uniformly emulsified and mixed with a dispersion. Cool the DC to room temperature. Add components (14) and (15) to ED. Add the swelling substance of component (12) of A to FE. A swelling substance of component (13) of GF is added to GF, and the resulting composition is filled into a container to obtain a two-layer lotion.

[0037] (Evaluation method 1: Softness of the skin after use) Each sample in Table 1 was evaluated by a panel of 10 cosmetic product evaluators to determine whether the skin felt softer after application to the entire face, and the evaluation was made according to the following criteria. (Evaluation criteria): (Judgment) More than 8 people responded that they felt this way: ◎ 5-7 people answered that they felt this way: ○ 3-4 people answered that they felt this way: △ Two or fewer people answered that they felt this way: ×

[0038] (Evaluation method 2: Appearance (beauty of the two layers)) Each sample in Table 1 was visually observed after being left to stand at room temperature for 12 hours, and a judgment was made according to the following criteria. (Evaluation criteria): (Judgment) It separated into two beautiful layers: ◎ It separates into two layers, but the water layer is cloudy white: ○ The interface of the emulsion layer is unclear: △ It did not separate into two layers: ×

[0039] (Evaluation method 3: Storage stability) Each sample in Table 1 was stored in a 50°C constant temperature bath for one month. The state of oil separation due to the breakdown of emulsion droplets was visually observed, using the state immediately after preparation as the baseline, and evaluated according to the following criteria. (Evaluation criteria): (Judgment) No change: ◎ Minor changes observed: ○ Slightly changed: △ Quite a change: ×

[0040] (Evaluation method 4: Redispersibility of the emulsion layer) Each sample in Table 1 was left to stand in a 50°C constant temperature bath for one month. After returning each sample to room temperature, the redispersibility of the emulsion layer was evaluated by gently shaking it according to the following criteria. (Evaluation criteria): (Judgment) Redistributed within 5 or fewer times: ◎ Redistributed in 10 or fewer iterations: ○ The distribution was redistributed between the 11th and 20th trials: △ Redistributed 20 or more times, or not redistributed: ×

[0041] As is clear from the results in Table 1, the two-layer lotions of Examples 1 to 15 of the present invention separated faster after standing compared to the two-layer lotions of Comparative Examples 1 to 5, achieved better redispersibility during use and softer skin after use, and demonstrated superior storage stability. In contrast, Comparative Example 1, which did not contain ingredient (A) or ingredient (B), was particularly inferior in terms of storage stability. Comparative Example 3, which did not contain ingredient (C), was particularly inferior in terms of the redispersibility of the emulsion layer. Comparative Example 4, which did not contain ingredient (E), was particularly inferior in terms of appearance. Comparative Example 5, which did not contain ingredient (F), was also particularly inferior in terms of appearance.

[0042] Example 16: Multilayered lotion (Ingredients) (%) (1) Hydrogenated phospholipid *10 (Component (A)) 0.7 (2) Phytosterols *2 (Component (B)) 0.2 (3) Mineral oil *5 (Ingredient (D)) 5 (4) Phytosteryl oleate *11 (Component (D)) 0.05 (5) Isopropyl myristate (Component (D)) 0.05 (6) Cetyl ethylhexanoate (Component (D)) 3 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.1 (8) Tocopherol 0.02 (9)Fragrance 0.08 (10) Purified water (Component (G)) Remaining amount (11) EDTA-2Na 0.02 (12) Carrageenan *12 0.1 (13) Tremella fuciformis polysaccharide *13 0.005 (14) Carbomer 0.02 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.005 (17) Magnesium aluminum silicate *14 (Component (F)) 0.1 (18) Sodium polyaspartate *8 (Component (E)) 2 (19) Phenoxyethanol 0.2 (20) Ethanol 8 *10 PHYTOCOMPO-PP (manufactured by Nippon Seika Co., Ltd.) *11 Rice sterol ester (manufactured by Tsukuno Rice Fine Chemicals Co., Ltd.) *12 Carrageenan J (manufactured by Asahi Chemical Industry Co., Ltd.) *13 TREMOIST-TP (manufactured by Nippon Seika Co., Ltd.) *14 Smecton SA-2 (manufactured by Kunimine Industries Co., Ltd.)

[0043] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DC to room temperature. Add ingredients (11) to (16) and ingredients (19) to (20) to ED. Component A (18) is added to FE. The composition obtained by adding component A (17) to GF was filled into a container to obtain a multi-layered lotion. (result) The multi-layered lotion of Example 16 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

[0044] Example 17: Multilayer Cosmetics (Ingredients) (%) (1) Hydrogenated phospholipid *1 (Component (A)) 0.5 (2) Phytosterols *2 (Component (B)) 0.2 (3) Squalane *6 (Ingredient (D) 3 (4) Ethyl oleate (Component (D)) 0.05 (5) Octyldodecanol (Component (D)) 0.05 (6) Triethylhexanoin (Component (D)) 2 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.05 (8) Tocopherol 0.02 (9)Fragrance 0.08 (10) Purified water (Component (G)) Remaining amount (11) EDTA-2Na 0.02 (12) Niacinamide 6 (13) Tremella fuciformis polysaccharide *13 0.005 (14) Carbomer 0.02 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.005 (17) Bentonite *9 (Component (F)) 0.1 (18) Sodium polyaspartate *8 (Component (E)) 2 (19) Phenoxyethanol 0.2 (20) Ethanol 5

[0045] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DC to room temperature. Add ingredients (11) to (16) and ingredients (19) to (20) to ED. Component A (18) is added to FE. The composition obtained by adding component A (17) to GF was filled into a container to obtain a multilayer cosmetic. (result) The multilayer cosmetic composition of Example 17 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

[0046] Example 18: Multilayered lotion (Ingredients) (%) (1) Hydrogenated phospholipid *10 (Component (A)) 1 (2) Cholesterol *3 (Component (B)) 0.2 (3) Squalane (Ingredient (D)) 3 (4) Ethyl oleate (Component (D)) 0.05 (5) Octyldodecanol (Component (D)) 0.05 (6) Triethylhexanoin (Component (D)) 2 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.05 (8) Tocopherol 0.02 (9)Fragrance 0.08 (10) Purified water (Component (G)) Remaining amount (11) EDTA-2Na 0.02 (12) L-ascorbic acid 2-glucoside 0.1 (13) Sodium monohydrogen phosphate 0.1 (14) Sodium dihydrogen phosphate 0.1 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.01 (17) Bentonite *9 (Component (F)) 0.5 (18) Sodium polyaspartate *8 (Component (E)) 1.5 (19) Phenoxyethanol 0.2 (20) Ethanol 8

[0047] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DC to room temperature. Add ingredients (11) to (16) and ingredients (19) to (20) to ED. Component A (18) is added to FE. The composition obtained by adding component A (17) to GF was filled into a container to obtain a multi-layered lotion. (result) The multi-layered lotion of Example 18 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

[0048] Example 19: Lotion (Ingredients) (%) (1) Hydrogenated phospholipid *1 (Component (A)) 0.5 (2) Phytosterols *2 (Component (B)) 0.2 (3) Squalane (Ingredient (D)) 3 (4) Ethyl oleate (Component (D)) 0.05 (5) Octyldodecanol (Component (D)) 0.05 (6) Triethylhexanoin (Component (D)) 2 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.1 (8) Tocopherol 0.02 (9)Fragrance 0.08 (10) Purified water (Component (G)) Remaining amount (11) EDTA-2Na 0.02 (12) Tranexamic acid 2 (13) Tremella fuciformis polysaccharide *13 0.005 (14) Carbomer 0.02 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.005 (17) Bentonite *9 (Component (F)) 0.3 (18) Sodium polyaspartate *8 (Component (E)) 1.5 (19) Phenoxyethanol 0.2 (20) Ethanol 8

[0049] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DC to room temperature. Add ingredients (11) to (16) and ingredients (19) to (20) to ED. Component A (18) is added to FE. The composition obtained by adding component A (17) to GF was filled into a container to obtain a multi-layered lotion. (result) The lotion of Example 19 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

[0050] Example 20: Lotion (Ingredients) (%) (1) Hydrogenated phospholipid *1 (Component (A)) 0.7 (2) Phytosterols *2 (Component (B)) 0.2 (3) Mineral oil *5 (Ingredient (D)) 5 (4) Phytosteryl oleate (Component (D)) 0.05 (5) Isopropyl myristate (Component (D)) 0.05 (6) Cetyl ethylhexanoate (Component (D)) 3 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.1 (8) Astaxanthin H 0.1 (9)Fragrance 0.08 (10) Purified water (Component (G)) Remaining amount (11) EDTA-2Na 0.02 (12) Carrageenan *12 0.05 (13) Tremella fuciformis polysaccharide *13 0.005 (14) Carbomer 0.02 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.005 (17) Bentonite *9 (Component (F)) 0.3 (18) Sodium polyaspartate *8 (Component (E)) 1.5 (19) Phenoxyethanol 0.2 (20) Ethanol

[0051] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DC to room temperature. Add ingredients (11) to (16) and ingredients (19) to (20) to ED. Component A (18) is added to FE. The composition obtained by adding component A (17) to GF was filled into a container to obtain a multi-layered lotion. (result) The lotion of Example 20 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

[0052] Example 21: Lotion (Ingredients) (%) (1) Hydrogenated phospholipid *1 (Component (A)) 0.7 (2) Phytosterols *2 (Component (B)) 0.2 (3) Mineral oil *5 (Ingredient (D) 5 (4) Phytosteryl oleate (Component (D)) 0.05 (5) Isopropyl myristate (Component (D) 0.05 (6) Cetyl ethylhexanoate (Component (D)) 3 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.1 (8) N-Stearoyldihydrosphingosine 0.01 (9)Fragrance 0.08 (10) Purified water (Component (G) Remaining amount (11) EDTA-2Na 0.02 (12) Carrageenan *12 0.1 (13) Tremella fuciformis polysaccharide *13 0.005 (14) Carbomer 0.02 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.005 (17) Bentonite *9 (Component (F)) 0.1 (18) Sodium polyaspartate *8 (Component (E)) 2 (19) Phenoxyethanol 0.2 (20) Ethanol 8

[0053] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DC to room temperature. Add ingredients (11) to (16) and ingredients (19) to (20) to ED. Component A (18) is added to FE. The composition obtained by adding component A (17) to GF was filled into a container to obtain a multi-layered lotion. (result) The lotion of Example 21 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

[0054] Example 22: Lotion (Ingredients) (%) (1) Hydrogenated phospholipid *1 (Component (A)) 0.7 (2) Phytosterols *2 (Component (B)) 0.2 (3) Mineral oil *5 (Ingredient (D)) 5 (4) Phytosteryl oleate (Component (D)) 0.05 (5) Isopropyl myristate (Component (D)) 0.05 (6) Cetyl ethylhexanoate (Component (D)) 3 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.1 (8) Stearyl glycyrrhetinate 0.1 (9)Fragrance 0.08 (10) Purified water (Component (G)) Remaining amount (11) EDTA-2Na 0.02 (12) Carrageenan *12 0.1 (13) Tremella fuciformis polysaccharide *13 0.005 (14) Carbomer 0.02 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.005 (17) Bentonite *9 (Component (F)) 0.1 (18) Sodium polyaspartate *8 (Component (E)) 2 (19) Phenoxyethanol 0.2 (20) Ethanol 8

[0055] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DB to room temperature. Add ingredients (11) to (16) and ingredients (19) to (20) to EC. Add component A (18) to FD. The composition obtained by adding component A (17) to GE was filled into a container to obtain a multi-layered lotion. (result) The lotion of Example 22 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

[0056] Example 23: Serum (Ingredients) (%) (1) Hydrogenated phospholipid *1 (Component (A)) 1 (2) Phytosterols *2 (Component (B)) 0.2 (3) Alkyl benzoate (C12-15) (Component (D)) 5 (4) Phytosteryl oleate (Component (D)) 0.05 (5) Isopropyl myristate (Component (D)) 0.05 (6) Cetyl ethylhexanoate (Component (D)) 3 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.1 (8) Tocopherol 0.02 (9)Fragrance 0.08 (10) Purified water (Component (G)) Remaining amount (11) EDTA-2Na 0.02 (12) Carrageenan *12 0.1 (13) Tremella fuciformis polysaccharide *13 0.005 (14) Carbomer 0.02 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.005 (17) Magnesium aluminum silicate *14 (Component (F)) 0.5 (18) Sodium polyaspartate *8 (Component (E)) 1.5 (19) Phenoxyethanol 0.2 (20) Ethanol 8 (21) Anhydrous silicic acid *15 1 *15 Godball D11-796C (manufactured by Suzuki Oil & Fat Industry Co., Ltd.)

[0057] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DC to room temperature. Add ingredients (11) to (16) and ingredients (19) to (21) to ED. Component A (18) is added to FE. The composition obtained by adding component A (17) to GF was filled into a container to obtain a multi-layered beauty serum. (result) The serum of Example 23 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

[0058] Example 24: Daytime beauty serum (Ingredients) (%) (1) Hydrogenated phospholipid *1 (Component (A)) 0.7 (2) Phytosterols *1 (Component (B)) 0.2 (3) Mineral oil *5 (Ingredient (D)) 1 (4) Ethylhexyl methoxycinnamate (Component (D)) 3 (5) Diethylamino hydroxybenzoyl hexyl benzoate (ingredient (D)) 1 (6) Alkyl benzoate (C12-15) (Component (D)) 1 (7) Di(C12-15)pareth-8 phosphate (component (C)) 0.1 (8) Tocopherol 0.02 (9)Fragrance 0.08 (10) Purified water (Component (G)) Remaining amount (11) EDTA-2Na 0.02 (12) Carrageenan *12 0.1 (13) Tremella fuciformis polysaccharide *13 0.005 (14) Carbomer 0.02 (15) Purified water (ingredient (G)) 5 (16) Sodium hydroxide 0.005 (17) Bentonite *9 (Component (F)) 0.5 (18) Sodium polyaspartate *8 (Component (E)) 2 (19) Phenoxyethanol 0.2 (20) Ethanol 8

[0059] (Manufacturing method) A. A portion of component (10) pre-swells components (17) and (18), respectively. B. Heat components (1) to (9) to 70°C and mix them uniformly. Add the remaining portion of component (10) heated to 70°C and mix uniformly with a dispersion. Cool the DC to room temperature. Add ingredients (11) to (16) and ingredients (19) to (20) to ED. Component A (18) is added to FE. The composition obtained by adding component A (17) to GF was filled into a container to obtain a multi-layered daytime beauty serum. (result) The daytime beauty serum of Example 24 exhibited rapid separation after standing, a beautiful appearance, excellent redispersibility during use, softness of the skin after application, and superior storage stability.

Claims

1. The following ingredients (A) to (G): (A) Phospholipids (B) Cholesterol and / or phytosterols (C) Phosphate-based surfactants (D) Oil (E) Sodium polyaspartate (F) Water-swellable clay minerals (G) Water A multi-layer cosmetic containing [ingredient name], which separates into at least an emulsion layer and an aqueous layer when left standing, and is used after shaking.

2. The multilayer cosmetic composition according to claim 1, wherein the content of component (F) is 0.01 to 0.5% by mass of the total amount of the cosmetic composition.

3. The multilayer cosmetic composition according to claim 1 or 2, wherein the mass ratio (E) / (F) of component (E) to component (F) is 1 to 40.

4. The following ingredients (A) to (G): (A) Phospholipids (B) Cholesterol and / or phytosterols (C) Phosphate-based surfactants (D) Oil (E) Sodium polyaspartate (F) Water-swellable clay minerals (G) Water A method for producing a multilayer cosmetic containing and which separates into at least an emulsion layer and an aqueous layer when left to stand, characterized in that components (A) to (D) and a portion of component (G) are emulsified, and then components (E) and (F), which have been previously swollen with the remainder of component (G), are added.

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