Multi-layered cosmetic

Abstract

To provide a multilayer cosmetic with quick separation between an oil phase and a powder phase and an aesthetic appearance.SOLUTION: A multilayer cosmetic has (A) an oil phase, (B) an aqueous phase, and (C) a powder phase, in that order, from the top to bottom, when left standing. The (A) oil phase has a hydrocarbon oil and / or silicone oil, the (B) aqueous phase has water, and the (C) powder phase has hydrophilic clay powder and hydrophilic spherical powder.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a multi-layer cosmetic that separates into an oil phase, an aqueous phase, and a powder phase when standing still and can be easily and uniformly mixed by shaking.

Background Art

[0002] Multi-layer cosmetics are used as cosmetics for aesthetic purposes due to their appearance characteristics of separating into multiple layers when standing still. Among them, multi-layer cosmetics without or with low viscosity containing powder are in high demand because they can provide effects such as sebum adsorption effect, astringent effect, skin unevenness correction effect, and non-greasy feeling due to the powder, and are used in lotions, antiperspirants, cleansing lotions, fragrances, etc. (for example, Patent Documents 1 and 2).

[0003] Also, in makeup products and hair care products, multi-layer cosmetics are known in which pearlescent agent particles are used in the powder to provide optical effects of color and shine on the skin, hair, etc. (Patent Document 3).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Disclosure of the Invention

Problems to be Solved by the Invention

[0005] In recent years, from the perspective of preventing makeup collapse and enhancing the durability of foundation makeup, there is a new category called makeup base specialized for such functions. This appeals to functions such as sebum adsorption function to prevent makeup collapse, barrier function to protect the skin from external factors such as pollen, dust, and dirt, and non-transfer function to prevent makeup from transferring onto masks or clothes, and moisturizing function to protect the made-up skin from dryness. In other words, it is applied on top of makeup to impart a fixing function to the makeup.

[0006] Since multi-layered cosmetics are separated into layers when standing still, there is an advantage that cosmetic components, especially active ingredients, suitable for each layer can be stably blended, and thus there is an advantage that the required functions as described above can be distributed to each layer. Also, being excellent in the aesthetic appearance of the exterior leads to an improvement in the user's sense of elevation and motivation, which is preferable.

[0007] On the other hand, since multi-layered cosmetics contain powder, aggregation is likely to occur. Also, since multi-layered cosmetics need to be shaken to make them into a uniform state from the separated layer state when standing still and cause a layer change to return to the original separated state after standing still, a surfactant is used. However, if the action of the surfactant is too strong, it takes a long time to separate into layers, and emulsified droplets remain in each layer after separation, making it difficult to obtain a transparent separation layer, which is not preferable from the perspective of aesthetics.

[0008] The present invention has been made in view of the above problems, and an object thereof is to provide a multi-layered cosmetic that has a quick separation between the oil phase and the powder phase and has an aesthetic appearance.

Means for Solving the Problems

[0009] The multi-layered cosmetic of the present invention is a multi-layered cosmetic that, when standing still, has the order of (A) an oil phase, (B) an aqueous phase, and (C) a powder phase from the top, and (A) The oil phase contains a hydrocarbon oil and / or a silicone oil (B) The aqueous phase contains water (C) The powder phase contains a hydrophilic clay powder and a hydrophilic spherical powder and includes the above.

[0010] The hydrocarbon oil and / or silicone oil is preferably a combination of a volatile oil and a non-volatile oil.

[0011] The volatile oil is preferably a hydrocarbon oil containing a tertiary carbon atom or a hydrocarbon oil having 9 to 13 carbon atoms in the main chain.

[0012] The hydrocarbon oil containing a tertiary carbon atom or the hydrocarbon oil having 9 to 13 carbon atoms in the main chain is preferably at least two selected from undecane, tridecane, and isohexadecane.

[0013] The hydrophilic clay powder is preferably bentonite and / or kaolin.

[0014] The hydrophilic spherical powder is preferably at least one selected from cellulose, (hexamethylene diisocyanate / trimethylolhexyl lactone) cross-polymer, silica, polymethyl methacrylate, and (methyl methacrylate / methacrylic acid PEG / PEG-4 / 3) cross-polymer.

[0015] (B) The aqueous phase preferably further contains sodium chloride.

[0016] (A) The oil phase is preferably 15 to 25% by mass based on the total amount of the cosmetic, and (C) the powder phase is preferably 0.3 to 15% by mass based on the total amount of the cosmetic.

[0017] The multi-layer cosmetic of the present invention can be a cosmetic filled in a dispenser-type container. The cosmetic can be a top cosmetic.

[0018] The dispenser-type container is preferably transparent. [Effect of the Invention]

[0019] The multi-layer cosmetic of the present invention is a multi-layer cosmetic that, when left standing, has the order of (A) oil phase, (B) aqueous phase, and (C) powder phase from top to bottom. (A) The oil phase contains hydrocarbon oil and / or silicone oil (B) The aqueous phase contains water (C) The powder phase contains hydrophilic clay powder and hydrophilic spherical powder Since it contains the above components, the separation between the oil phase and the powder phase is rapid, and it can have an aesthetic appearance.

Brief Description of the Drawings

[0020]

Figure 1

Embodiments for Carrying Out the Invention

[0021] Hereinafter, the multilayer cosmetics of the present invention will be described in detail. The multilayer cosmetics of the present invention are multilayer cosmetics that, when left standing, are in the order of (A) oil phase, (B) aqueous phase, and (C) powder phase from top to bottom, and (A) The oil phase contains hydrocarbon oil and / or silicone oil (B) The aqueous phase contains water (C) The powder phase contains hydrophilic clay powder and hydrophilic spherical powder and contain the above components.

[0022] (A) Oil phase The oil phase contains hydrocarbon oil and / or silicone oil. The hydrocarbon oil and / or silicone oil is preferably a combination of a volatile oil and a non-volatile oil. By being a combination of a volatile oil and a non-volatile oil, phase separation can be further improved, and usability can be made even better. The combination of a volatile oil and a non-volatile oil can be any combination of a volatile hydrocarbon oil and a non-volatile hydrocarbon oil, a volatile hydrocarbon oil and a non-volatile silicone oil, a non-volatile hydrocarbon oil and a volatile silicone oil, or a non-volatile hydrocarbon oil and a non-volatile silicone oil.

[0023] Here, the volatile oil means a component having a boiling point in the range of 60 to 260°C at normal pressure. As the volatile oil, a hydrocarbon oil having 8 to 16 carbon atoms, particularly a branched alkane having 8 to 16 carbon atoms (also known as isoparaffin or isoalkane), for example, isododecane (also known as 2,2,4,4,6-pentamethylheptane), isodecane, isohexadecane, and oils sold under the trade names ISOPARS® or PERMETHYLS® can be selected.

[0024] Further examples of the volatile hydrocarbon oil include linear alkanes having 9 to 17 carbon atoms, for example, dodecane (12 carbon atoms) and tetradecane (14 carbon atoms) commercially available under the reference names PARAFOL® 12-97 and PARAFOL® 14-97 (Sasol), respectively, and alkanes obtained according to the method described in, for example, International Application WO2007 / 068371 A1, for example, a mixture of undecane (11 carbon atoms) and tridecane (13 carbon atoms) commercially available under the reference name CETIOL® UT (Cognis).

[0025] From the viewpoints of a refreshing feeling in use and phase separation, it is preferable to contain a volatile hydrocarbon oil containing a tertiary carbon atom or a volatile hydrocarbon oil having 9 to 13 carbon atoms in the main chain. Among them, it is preferable to select at least two kinds selected from undecane, tridecane, and isohexadecane.

[0026] As the volatile oil, a volatile silicone, for example, or a volatile linear or cyclic silicone oil, particularly having a viscosity of 8 centistokes (cSt) (8×10 -6 m 2 / s), it is also possible to use those having particularly 2 to 10 silicon atoms, especially 2 to 7 silicon atoms, and these silicones may optionally contain an alkyl group or an alkoxyl group having 1 to 10 carbon atoms. As the volatile silicone oil that can be used in the present invention, specifically, dimethicone having viscosities of 5 cSt and 6 cSt, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane and mixtures thereof can be cited.

[0027] More preferably, the volatile silicone oil that can be cited is a linear or cyclic silicone oil having 2 to 7 silicon atoms, and these silicones optionally contain an alkyl group or an alkoxyl group having 1 to 10 carbon atoms. Among the volatile silicone oils, dodecamethylpentasiloxane is preferred. Examples of the volatile fluorinated oil that can be cited are, for example, nonafluoromethoxybutane or perfluoromethylcyclopentane and mixtures thereof.

[0028] The non-volatile oil is an oil that remains on the skin at room temperature and atmospheric pressure. More specifically, the non-volatile oil has an evaporation rate of 0.01 mg / cm 2 / min or less. The non-volatile oil can be selected particularly from non-volatile hydrocarbon oils and silicone oils.

[0029] Examples of the hydrocarbon oil derived from animals include, for example, perhydrosqualene. Examples of hydrocarbon oils derived from plants include phytosterols, such as phytosteryl oleate, phytosteryl isostearate, and lauroyl / octyldodecyl / phytosteryl glutamate (Ajinomoto Co., Inc., ELDEW PS203), triglycerides composed of esters of glycerol and fatty acids, particularly those in which the fatty acids can have a chain length of C4 to C36, particularly C18 to C36 (these oils can be linear or branched, saturated or unsaturated). Particularly, triglycerides of heptanoic acid or octanoic acid, castor oil, alfalfa oil, safflower oil, pumpkin oil, millet oil, barley oil, quinoa oil, rye oil, kukui oil, passionflower oil, shea butter, aloe oil, sweet almond oil, peach kernel oil, peanut oil, argan oil, avocado oil, baobab oil, borage oil, broccoli oil, calendula oil, camelina oil, canola oil, carrot oil, safflower oil, flaxseed oil, rapeseed oil, cottonseed oil, coconut oil, pumpkin seed oil, wheat germ oil, jojoba oil, lily oil, macadamia oil, corn oil, meadowfoam oil, evening primrose oil, olive oil, palm oil, blackcurrant seed oil, kiwi seed oil, grape seed oil, pistachio oil, pumpkin squash oil, winter squash oil, ginger lily oil, sesame oil, soybean oil, sunflower oil, castor oil, and watermelon oil, as well as mixtures thereof, or caprylic / capric triglycerides such as those sold by STEARINERIE DUBOIS or sold under the names MIGLYOL 810 (registered trademark), 812 (registered trademark), and 818 (registered trademark) by DYNAMIT NOBEL may also be used.

[0030] Examples of linear or branched hydrocarbons derived from minerals or synthesis include liquid paraffin and their derivatives, petrolatum, polydecene, polybutene, hydrogenated polyisobutene, such as Parleam.

[0031] It may also be a synthetic ether having 10 to 40 carbon atoms. As the synthetic ester, for example, an oil of the formula R1COOR2 (wherein R1 represents a residue of a linear or branched fatty acid containing 1 to 40 carbon atoms, R2 represents a hydrocarbon chain having 1 to 40 carbon atoms, particularly a branched hydrocarbon chain, provided that the sum of the number of carbon atoms in the R1 chain and the number of carbon atoms in the R2 chain is 10 or more). The ester can be particularly selected from esters of fatty alcohols and acids. For example, cetostearyl octanoate, isopropyl alcohol esters such as isopropyl myristate, isopropyl palmitate, ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate or isopropyl isostearate, isostearyl isostearate, octyl stearate, hydroxylated esters such as isostearyl lactate, octyl hydroxystearate, diisopropyl adipate, heptanoate esters, particularly isostearyl heptanoate; alcohol or polyalcohol esters of octanoic acid, decanoic acid or ricinoleic acid, such as propylene glycol dioctanoate, cetyl octanoate, tridecyl octanoate, 4-diheptanoic acid and 2-ethylhexyl palmitate, alkyl benzoates, polyethylene glycol diheptanoate, propylene glycol 2-diethylhexanoate and mixtures thereof, C12-C15 alkyl benzoates, hexyl laurate, neopentanoate esters such as isodecyl neopentanoate, isotridecyl neopentanoate, isostearyl neopentanoate or octyldodecyl neopentanoate, isononanoate esters such as isononyl isononanoate, isotridecyl isononanoate and octyl isononanoate, hydroxylated esters such as isostearyl lactate and distearyl malate.

[0032] Also preferably mentioned are fatty alcohols that are liquid at room temperature and contain branched and / or unsaturated carbon chains having 12 to 26 carbon atoms. For example, 2-octyldodecanol, isostearyl alcohol, oleyl alcohol, 2-hexyldecanol, 2-butyloctanol and 2-undecylpentadecanol can be mentioned.

[0033] Alternatively, it may be a C12 - C22 higher fatty acid, for example, oleic acid, linoleic acid, linolenic acid, and mixtures thereof. Also, a dialkyl carbonate in which the two alkyl chains may be the same or different, for example, dicaprylyl carbonate commercially available under the name CETIOL CC (registered trademark) by COGNIS, may be mentioned.

[0034] Examples of silicone oils include non - volatile linear or cyclic polydimethylsiloxane (PDMS); polydimethylsiloxane containing an alkyl group, an alkoxy group, or a phenyl group having 2 - 24 carbon atoms, which is a pendant group of the silicone chain or at the end of the silicone chain; phenylated silicones such as phenyltrimethicone, phenyldimethylicone, phenyltrimethylsiloxy diphenylsiloxane, diphenyldimethylicone, diphenylmethyldiphenyl - trisiloxane, or (2 - phenylethyl)trimethylsiloxysilicate, and mixtures thereof.

[0035] The oil phase is preferably 15 - 25% by mass, more preferably 17 - 23% by mass, and even more preferably 19 - 21% by mass based on the total amount of the cosmetic. When the oil phase is 15% by mass or more based on the total amount of the cosmetic, phase separation can be made good, and the barrier function against external factors and the function as a moisturizing pack can also be made good. Also, when the oil phase is 25% by mass or less based on the total amount of the cosmetic, phase separation can be made good, and stickiness and greasiness when applied to the skin can be suppressed.

[0036] (B) Aqueous phase The aqueous phase contains water. The water may be ion - exchanged water or purified water. The aqueous phase preferably contains sodium chloride. By containing sodium chloride, the phase interface can be made clear and the separation rate can be adjusted. The blending amount is preferably 0.1 to 1% by mass, more preferably 0.2 to 0.8% by mass, based on the total amount of the cosmetic. By setting it at 0.1% by mass or more, the interface can be made clear and the separation rate can be increased, and by setting it at 1% by mass or less, stickiness due to sodium chloride can be suppressed.

[0037] In addition, a lower alcohol may be further blended in the aqueous phase. By blending a lower alcohol, the powder phase can be wetted, the specific gravity of the liquid itself can be reduced, and the effect of suppressing caking of the powder at the liquid surface can be expected. Also, a refreshing feeling of use can be imparted.

[0038] The lower alcohol is preferably 1.0 to 45.0% by mass, more preferably 20 to 38% by mass, based on the total amount of the multi-layer cosmetic. By setting the blending amount at 1.0% by mass or more, the wetting of the powder can be made sufficient, and the suppression of caking can also be made sufficient. On the other hand, by setting the blending amount at 45.0% by mass or less, good multi-phase separation can be achieved and it is also preferable from the viewpoint of stability.

[0039] (C) Powder phase The multi-layer cosmetic of the present invention contains a hydrophilic clay powder and a hydrophilic spherical powder. By containing both the hydrophilic clay powder and the hydrophilic spherical powder, a multi-layer cosmetic in a phase-separated state can be made into a uniform dispersion state by shaking and can return to the original separated state after standing. In addition, since the hydrophilic clay powder swells and its shape easily changes, by combining it with the spherical powder, the height (sedimentation product) of the powder phase during standing can be produced, which is aesthetically beautiful. Moreover, by combining powders with different properties such as the hydrophilic clay powder and the hydrophilic spherical powder, caking (aggregation) of the powder phase can be suppressed.

[0040] The quantitative ratio of the hydrophilic clay powder to the hydrophilic spherical powder varies depending on the type and quantitative ratio of the hydrocarbon oil or silicone oil in the oil phase, and the types of the hydrophilic clay powder and hydrophilic spherical powder used, and thus cannot be generally stated. For example, when the hydrophilic clay powder is bentonite and the hydrophilic spherical powder is silica, the hydrophilic spherical powder relative to the hydrophilic clay powder (hydrophilic spherical powder / hydrophilic clay powder) is preferably 0.5 to 10, more preferably 1 to 8, and preferably 1.2 to 5.

[0041] Examples of the hydrophilic spherical powder used in the present invention include spherical resin powders with their surfaces hydrophilized (for example, polyamide spherical resin powders (nylon spherical powders), spherical polyethylene, crosslinked poly(methyl methacrylate) spherical resin powders, spherical polyesters, crosslinked polystyrene spherical resin powders, copolymer spherical resin powders of styrene and acrylic acid, benzoguanamine spherical resin powders, polytetrafluoroethylene spherical powders, dimethicone / vinyl dimethicone) cross-polymers, etc., with the surfaces of spherical organic powders hydrophilized), water-dispersible spherical silica (water-dispersible spherical anhydrous silicic acid), spherical starch powders where the powder itself exhibits hydrophilicity, spherical cellulose powders, and the like. The method for hydrophilizing the powder is not particularly limited and can be carried out by methods such as polyethylene glycolization treatment.

[0042] As long as the shape of the hydrophilic spherical powder is spherical, its surface may be either porous or non-porous. From the viewpoints of adjusting the sedimentation rate of the powder and making it easy to form sediment deposits, cellulose, (hexamethylene diisocyanate (=HDI) / trimethylolhexyl lactone) cross-polymer, silica, polymethyl methacrylate, (methyl methacrylate / methacrylic acid PEG / PEG-4 / 3) cross-polymer are preferably mentioned as the hydrophilic spherical powder.

[0043] Examples of cellulose include "Celluloflow C-25" (Chisso Corporation). Examples of (hexamethylene diisocyanate / trimethylolhexyl lactone) cross-polymer include "Plastic Powder D-400" (manufactured by Toshiba Pigment Co., Ltd.). Examples of silica include "Sunsphere L-51" (manufactured by Asahi Glass Co., Ltd.) and "Silica Microbeads P-1500" (manufactured by JGC Catalysts & Chemicals Ltd.). Examples of polymethyl methacrylate include "Microspheres M-100" (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.). Examples of methyl methacrylate / methacrylic acid PEG / PEG-4 / 3 cross-polymer include "Tech Polymer AQUA" (manufactured by Sekisui Chemical Co., Ltd.). These are all commercially available, and any of them can be preferably used.

[0044] The blending amount of the hydrophilic spherical powder is preferably 0.01 to 3% by mass, more preferably 0.03 to 1.5% by mass, based on the total amount of the cosmetic. When the blending amount is 0.01% by mass or more, it becomes easier to adjust the sedimentation rate and sedimentation deposits are more likely to occur. Also, when it is 3% by mass or less, when a dispenser is used in the container, it is possible to suppress the clogging of the nozzle part and the squeeze part with the powder.

[0045] As the hydrophilic clay powder, water-swellable clay minerals and kaolin are preferable. Water-swellable clay minerals are layered crystalline silicate minerals in which a layer containing crystalline silicate and a layer centered on metals such as Al and Mg are stacked, and examples include smectite group clay minerals and swelling mica. Examples of smectite group clay minerals include bentonite, montmorillonite, beidellite, nontronite, saponite, hectorite, stevensite, and teniolite. Examples of swelling mica include fluorotetrasilicic mica. These may be either natural or synthetic products. Commercially available products preferably include Kunipia, Smecton (both manufactured by Kunimine Industries Co., Ltd.), Veegum (manufactured by Vanderbilt Co., Ltd.), Dimonite, fluorotetrasilicic mica (all manufactured by Toppy Industries Co., Ltd.), Laponite (manufactured by Rockwood Additive), etc.

[0046] The blending amount of the hydrophilic clay powder is preferably 0.01 to 3% by mass, more preferably 0.03 to 1.5% by mass, based on the total amount of the cosmetic. When the blending amount is 0.01% by mass or more, it becomes easy to adjust the sedimentation rate, and when it is 3% by mass or less, it becomes easy to form a sediment deposit.

[0047] (C) The powder phase is preferably 0.3 to 15% by mass, more preferably 0.5 to 5% by mass, and even more preferably 0.8 to 1% by mass, based on the total amount of the cosmetic. When the powder phase is 0.3% by mass or more based on the total amount of the cosmetic, it is possible to ensure a sediment deposit and guarantee aesthetic properties, and at the same time, it is possible to endow a sebum adsorption function and suppress makeup collapse. Also, when the powder phase is 15% by mass or less based on the total amount of the cosmetic, it is possible to make the phase separation good and suppress powder streaking when applied to the skin.

[0048] It is preferable that the multilayer cosmetic of the present invention is substantially free of a surfactant. This is because when a surfactant is blended, an emulsification phenomenon may occur, making it difficult to form a clear phase boundary, and also because a stable and uniform emulsion composition may be formed, and even when left standing, it may not separate and may not exhibit a multilayer appearance. However, when blending for the purpose of adjusting oil droplets in the space formed by the container wall surface and the uppermost oil phase surface and the container, etc., the blending amount is preferably 0.4% by mass or less based on the total amount of the cosmetic.

[0049] When using a surfactant, an anionic surfactant, a cationic surfactant, or a nonionic surfactant can be used. In particular, a nonionic surfactant is preferable.

[0050] Examples of lipophilic nonionic surfactants include sorbitan fatty acid esters (e.g., sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexanoate, diglycerol sorbitan tetra-2-ethylhexanoate, etc.); glycerin polyglycerin fatty acids (e.g., glycerin monoricinoleate, glycerin monoelaidate, glycerin sesquioleate, glycerin monostearate, glycerin α,α'-oleoylpyroglutamate, glycerin monostearate malate, etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); hydrogenated castor oil derivatives; glycerin alkyl ethers, etc.

[0051] Examples of the hydrophilic nonionic surfactant include POE-sorbitan fatty acid esters (e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE sorbit fatty acid esters (e.g., POE-sorbitan monolaurate, POE-sorbitan monooleate, POE-sorbitan pentaoleate, POE-sorbitan monostearate, etc.); POE-glycerin fatty acid esters (e.g., POE-monooleate such as POE-glycerin monostearate, POE-glycerin monoisostearate, POE-glycerin triisostearate, etc.); POE-fatty acid esters (e.g., POE-distearate, POE-mono dioleate, ethylene glycol distearate, etc.); POE-alkyl ethers (e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); pluronic types (e.g., pluronic, etc.); POE·POP-alkyl ethers (e.g., POE·POP-cetyl ether, POE·POP-2-decyltetradecyl ether, POE·POP-monobutyl ether, POE·POP-hydrogenated lanolin, POE·POP-glycerin ether, etc.); tetra POE·tetra POP-ethylenediamine condensates (e.g., tetronic, etc.); POE-castor oil hydrogenated castor oil derivatives (e.g., POE-castor oil, POE-hydrogenated castor oil, POE-hydrogenated castor oil monoisostearate, POE-hydrogenated castor oil triisostearate, POE-hydrogenated castor oil monopyroglutamic acid monoisostearic acid diester, POE-hydrogenated castor oil maleic acid, etc.); POE-beeswax·lanolin derivatives (e.g., POE-sorbit beeswax, etc.); alkanolamides (e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid ester; POE-alkylamine; POE-fatty acid amide; sucrose fatty acid ester; alkyl ethoxydimethylamine oxide; trioleyl phosphate, etc.

[0052] When a thickener of natural polymer or synthetic polymer is blended in the multilayer cosmetic of the present invention, it is possible to adjust the usability and the separation rate of the multilayer. In the present invention, when such a thickener is blended, the boundary becomes unclear in a normal multilayer cosmetic, but in the present invention, it is possible to provide a multilayer cosmetic with a clear and beautiful appearance. The blending amount of the thickener is not limited, but 0.01 to 10% by mass is preferable based on the total amount of the multilayer cosmetic.

[0053] A thickener may be blended in the multilayer cosmetic of the present invention. Examples of natural water-soluble polymers include plant-based polymers {for example, gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algal colloid (cassou extract), starch (rice, corn, potato, wheat), glycyrrhizic acid}; microbial-based polymers (for example, xanthan gum, dextran, succinoglucan, pullulan, etc.); others (for example, fish-derived collagen, fish-derived gelatin, wheat protein, silk protein, etc.).

[0054] Examples of semi-synthetic water-soluble polymers include starch-based polymers (for example, carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose-based polymers (methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, cellulose powder, etc.); alginic acid-based polymers (for example, sodium alginate, propylene glycol alginate, etc.).

[0055] Examples of the synthetic water-soluble polymers include vinyl polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene polymers (e.g., polyoxyethylene-polyoxypropylene copolymers such as polyethylene glycol 20,000, 40,000, and 60,000); acrylic polymers (e.g., sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; cationic polymers (e.g., polyacrylate), etc. The cationic polymer can more easily adjust the sedimentation product. Examples of the inorganic water-soluble polymers include magnesium aluminum silicate, bentonite, hectorite, AlMg silicate (Veegum), laponite, silicic anhydride, etc.

[0056] In the multilayer cosmetic of the present invention, medicinal agents, moisturizing components, anti-inflammatory agents, bactericides, preservatives, ultraviolet absorbers, antioxidants, other organic and inorganic powders, fragrances, pigments, etc., which are generally used in cosmetics, can be blended as necessary. In particular, a dye can be blended in the multilayer cosmetic of the present invention to further enhance the aesthetics of the oil phase and the water phase, and a fragrance can be blended to enhance the preference during use.

[0057] The drug components can be any of oil-soluble, water-soluble, and amphiphilic. Specifically, examples thereof include drugs such as whitening agents, moisturizing agents, anti-inflammatory agents, antibacterial agents, hormonal agents, vitamins, various amino acids and their derivatives, enzymes, antioxidants, and hair growth agents. Examples of the whitening agents include hydroquinone derivatives such as arbutin, kojic acid, L-ascorbic acid (vitamin C) and its derivatives, pantothenyl ethyl ether, tranexamic acid and its derivatives, various extracts such as placenta extract and plant extracts (e.g., chamomile extract, etc.).

[0058] Examples of L-ascorbic acid derivatives include L-ascorbic acid monoalkyl esters such as L-ascorbic acid monostearate, L-ascorbic acid monopalmitate, and L-ascorbic acid monooleate; L-ascorbic acid monoesters such as L-ascorbic acid monophosphate and L-ascorbic acid-2-sulfate; L-ascorbic acid dialkyl esters such as L-ascorbic acid distearate, L-ascorbic acid dipalmitate, and L-ascorbic acid dioleate; L-ascorbic acid diesters such as L-ascorbic acid diphosphate; L-ascorbic acid trialkyl esters such as L-ascorbic acid tristearate, L-ascorbic acid tripalmitate, and L-ascorbic acid trioleate; ascorbic acid triesters such as L-ascorbic acid triphosphate; and L-ascorbic acid glucosides such as L-ascorbic acid 2-glucoside. Examples of L-ascorbic acid and its derivatives include L-ascorbic acid, L-ascorbic acid phosphate ester, L-ascorbic acid-2-sulfate, L-ascorbic acid 2-glucoside, or salts thereof.

[0059] Examples of tranexamic acid derivatives include dimers of tranexamic acid (e.g., trans-4-(trans-aminomethylcyclohexanecarbonyl)aminomethylcyclohexanecarboxylic acid hydrochloride, etc.), ester compounds of tranexamic acid and hydroquinone (e.g., trans-4-aminomethylcyclohexanecarboxylic acid 4'-hydroxyphenyl ester, etc.), ester compounds of tranexamic acid and gentisic acid (e.g., 2-(trans-4-aminomethylcyclohexylcarbonyloxy)-5-hydroxybenzoic acid and its salts, etc.), amide compounds of tranexamic acid (e.g., trans-4-aminomethylcyclohexanecarboxylic acid methylamide and its salts, trans-4-(p-methoxybenzoyl)aminomethylcyclohexanecarboxylic acid and its salts, trans-4-guanidinomethylcyclohexanecarboxylic acid and its salts, etc.).

[0060] Examples of anti-inflammatory agents include glycyrrhizin, glycyrrhizinate (such as dipotassium glycyrrhizinate, ammonium glycyrrhizinate, etc.), allantoin, and the like. Examples of moisturizing agents include urea and the like. Examples of antibacterial agents include resorcinol, sulfur, salicylic acid, and the like. Examples of hormonal agents include oxytocin, corticotropin, vasopressin, secretin, gastrin, calcitonin, hinokitiol, ethinyl estradiol, and the like.

[0061] Examples of vitamins include vitamin A and its derivatives (such as retinol, vitamin A palmitate, etc.), vitamin B6, vitamin B6 derivatives such as pyridoxine hydrochloride, nicotinic acid derivatives such as nicotinic acid and nicotinamide, vitamin E and its derivatives, β-carotene, and the like.

[0062] Examples of various amino acids, their derivatives, and enzymes include L-glutamic acid, urocanic acid, trypsin, lysozyme chloride, chymotrypsin, semi-alkali protease, serrapeptase, lipase, hyaluronidase, and the like. Examples of antioxidants include thiotaurine, glutathione, catechin, albumin, ferritin, metallothionein, and the like. When applied to hair growth agents, examples include β-glycyrrhetinic acid, pantothenyl ethyl ether, minoxidil, and the like. Also, cooling agents such as camphor and menthol can be used.

[0063] To produce the multilayer cosmetic of the present invention, generally known production methods are used. For example, a powder phase preliminarily dispersed in advance and an oil phase in which an oil-soluble component is dissolved are added to an aqueous phase in which a water-soluble component is dissolved, and the mixture is stirred. The multilayer cosmetic of the present invention, by shaking, the separated oil phase, aqueous phase, and powder phase are uniformly dispersed throughout to form a single-phase state, and then by standing, they are separated again and return to the original multilayer cosmetic.

[0064] The multi-layered cosmetic of the present invention can also be used as various categories of cosmetics, specifically, base cosmetics, lotions, antiperspirants, cleansing lotions, fragrances, colognes, air fresheners, deodorant sprays, bath salts, etc.

[0065] The cosmetic of the present invention is particularly suitable for being provided in the form of a mist or a spray contained together with a propellant in a spray container such as a dispenser, and does not cause clogging of the nozzle portion or the squeeze portion. By being contained in a spray container such as a dispenser, it can be applied uniformly, and it is possible to avoid problems such as makeup smudging or getting distorted when used as a makeup base.

Examples

[0066] Next, the present invention will be described more specifically with reference to examples. The present invention is not limited by the following examples in any way. The blending amounts are in mass % unless otherwise specified.

[0067] [Examination of the type and amount of the oil phase] Multi-layered cosmetics of Test Examples 1 to 12 (systems with different types and amounts of the oil phase) were prepared according to the formulations shown in Table 1, and the possibility of three-phase separation and aesthetic properties (balance of the three phases) were evaluated according to the following criteria. (Possibility of three-phase separation) The prepared multi-layered cosmetic was put into an 80 mL PET container and stirred, and the state after stirring for 1 hour was observed and evaluated as follows. A Separate into an oil phase, an aqueous phase, and a powder phase after stirring for 1 hour D Do not separate into an oil phase, an aqueous phase, and a powder phase after stirring for 1 hour (Aesthetic properties - balance of the three phases) 70 g of the prepared multi-layered cosmetic was put into an 80 mL PET container and stirred. After standing for 1 hour, the ratio of the oil phase and the powder phase was calculated with the total height (cm) as 100%, and the aesthetic properties were evaluated from the perspective of the balance of the three phases according to the following criteria. A The powder phase has a height of 7 / 10 or more of the whole, and the balance of the three phases is very good The B powder phase has a height of more than 1 / 2 and less than 7 / 10 of the whole, and the balance of the three phases is good. The C powder phase has a height of less than 1 / 2 of the whole, and the balance of the three phases is slightly poor.

[0068]

Table 1

[0069] As shown in Table 1, in systems with different types and amounts of the oil phase, the aesthetic properties from the viewpoints of three-phase separation and the balance of the three phases were generally good.

[0070] [Examination of powder types] Multilayer cosmetics of Test Examples 13 to 23 (systems with different powder types) were adjusted according to the formulations shown in Table 2. In addition, the possibility of three-phase separation was evaluated based on the same criteria as in the above [Examination of the type and amount of the oil phase], and the aesthetic properties (the cleanliness of the oil-water interface) were evaluated based on the following criteria. (Aesthetic property - cleanliness of the interface) A. The interfaces between the oil phase and the water phase, and between the water phase and the powder phase after stirring for 1 hour are clean. D. The interfaces between the oil phase and the water phase, and between the water phase and the powder phase after stirring for 1 hour are unclear due to turbidity, etc.

[0071]

Table 2

[0072] As shown in Table 2, it was recognized that the type of powder affected the aesthetic properties in terms of three-phase separation or the cleanliness of the interface.

[0073] [Examination of powder amount] Multilayer cosmetics of Test Examples 24 to 32 (systems with different powder amounts) were adjusted according to the formulations shown in Table 3, and the ratio of the height of the oil phase to the powder phase after stirring for 1 hour was determined. In addition, the aesthetic properties were evaluated based on the same criteria as in the above [Examination of the type and amount of the oil phase].

[0074]

Table 3

[0075] As shown in Table 3, it was confirmed that the amount of powder had an impact on the aesthetic property in terms of three-phase separation or the balance of the three phases.

[0076] [Examination of phase separation] Multilayer cosmetics of Test Examples 33 to 35 (systems with different types of volatile hydrocarbon oils) were adjusted according to the formulations shown in Table 4. The adjusted multilayer cosmetics of Test Examples 33 to 35 were stirred, and the state of phase separation was observed immediately after stirring, 2 minutes after stirring, and 30 minutes after stirring. The observed results are shown in Figure 1. Each photograph in Figure 1 is, from left to right, Test Example 33 (undecane + tridecane), Test Example 34 (isododecane), and Test Example 35 (isohexadecane).

[0077]

Table 4

[0078] From Figure 1 and Table 4, when the powder contained cellulose, bentonite, and silica, it was confirmed that the phase separation of Test Example 3 was fast at 2 minutes after stirring, and at 30 minutes after stirring, the transparent part of the oil phase and its interface of Test Examples 1 and 3 became clear.

[0079] [Examination of the fixing effect] Multilayer cosmetics of Test Examples 36 to 43 were adjusted according to the formulations shown in Table 5.

[0080]

Table 5

[0081] The multilayer cosmetics of Test Examples 36 to 43 were stored in a spray container and applied to the face after makeup by spraying. When confirmed after 8 hours, when the multilayer cosmetics of Test Examples 36 to 43 were applied, no makeup smudging or powder streaking was observed, and the makeup did not fade, and the texture was not prominent.

[0082] The following shows a formulation example of a multi-layer cosmetic. The multi-layer cosmetic shown below was prepared as follows. First, (1) to (4) were mixed and dissolved at room temperature to preliminarily adjust the oil phase. Also, (14) to (16) were preliminarily dispersed to preliminarily adjust the powder phase. (12) and (17) were mixed and dispersed in (6) at room temperature. (7) to (11) were mixed and dissolved in (5) at room temperature, and the previously mixed and dispersed (6) solution, powder phase, and oil phase were added in that order, and a three-layer makeup lotion was obtained by propeller stirring.

[0083] Formulation Example 1: After-makeup Lotion Formulation Ingredients (1) Undecane 3.5 (2) Tridecane 1.5 (3) Hydrogenated Polydecene 12 (4) Isohexadecane 3 (5) Ion-exchanged Water To 100% (6) Ethanol 20 (7) Glycerin 2 (8) Sodium Chloride 0.2 (9) Lactic Acid 0.01 (10) Sodium Lactate 0.5 (11) Sodium Pyrosulfite 0.003 (12) Phenoxyethanol 0.35 (13) EDTA 0.01 (14) Cellulose 0.25 - 0.35 (15) Bentonite 0.05 - 0.3 (16) (HDI / Trimethylolhexyl Lactone) Cross Polymer 0.3 - 0.33 (17) Fragrance Appropriate Amount

[0084] Formulation Example 2: After-makeup Lotion (1) Undecane 3.5 (2) Tridecane 1.5 (3) Hydrogenated Polydecene 12 (4) Isohexadecane 3 (5) Ion-exchanged Water To 100% (6) Ethanol 20 (7) Glycerin 2 (8) Sodium chloride 0.2 (9) Lactic acid 0.01 (10) Sodium lactate 0.5 (11) Sodium pyrosulfite 0.003 (12) Phenoxyethanol 0.35 (13) EDTA 0.01 (14) Cellulose 0.25 - 0.35 (15) Bentonite 0.05 - 0.3 (16) Silica 0.3 (17) Perfume Appropriate amount

[0085] Formulation Example 3: After - makeup lotion (1) Undecane 3.5 (2) Tridecane 1.5 (3) Hydrogenated polydecene 12 (4) Isohexadecane 3 (5) Ion - exchanged water To 100% (6) Ethanol 20 (7) Glycerin 2 (8) Sodium chloride 0.2 (9) Lactic acid 0.01 (10) Sodium lactate 0.5 (11) Sodium pyrosulfite 0.003 (12) Phenoxyethanol 0.35 (13) EDTA 0.01 (14) Cellulose 0.25 - 0.35 (15) Bentonite 0.05 - 0.3 (16) Methyl polymethacrylate 0.3 (17) Perfume Appropriate amount

Claims

1. A multilayer cosmetic that, when standing still, has, from top to bottom, (A) an oil phase, (B) an aqueous phase, and (C) a powder phase, wherein (A) the oil phase contains a hydrocarbon oil and / or a silicone oil, (B) the aqueous phase contains water, (C) the powder phase contains 0.01 to 3% by mass of a hydrophilic clay powder and 0.01 to 3% by mass of a hydrophilic spherical powder based on the total amount of the cosmetic, and the hydrocarbon oil and / or silicone oil is a combination of a volatile oil and a non-volatile oil, and the volatile oil is a hydrocarbon oil containing a tertiary carbon atom or a hydrocarbon oil having 9 to 13 carbon atoms in the main chain, (1) the hydrophilic clay powder is bentonite and kaolin, the hydrophilic spherical powder contains at least cellulose, and does not contain talc, nylon-12 powder, and methyl methacrylate cross-polymer powder, or (2) the hydrophilic clay powder is bentonite and / or kaolin, the hydrophilic spherical powder contains cellulose, silica, and / or (hexamethylene diisocyanate / trimethylolhexyl lactone) cross-polymer, and does not contain talc, nylon-12 powder, and methyl methacrylate cross-polymer powder, or (3) the hydrophilic clay powder is bentonite and / or kaolin, the hydrophilic spherical powder is at least one selected from cellulose, (hexamethylene diisocyanate / trimethylolhexyl lactone) cross-polymer, silica, polymethyl methacrylate, and (methyl methacrylate / methacrylic acid PEG / PEG-4 / 3) cross-polymer, and does not contain talc, nylon-12 powder, and methyl methacrylate cross-polymer powder, Multilayer cosmetic.

2. The multilayer cosmetic according to Claim 1, wherein the hydrocarbon oil is at least two selected from undecane, tridecane, and isohexadecane.

3. The multilayer cosmetic according to Claim 1 or 2, wherein the (B) aqueous phase further contains sodium chloride.

4. The multilayer cosmetic according to any one of Claims 1 to 3, wherein the (A) oil phase is 15 to 25% by mass based on the total amount of the cosmetic, and the (C) powder phase is 0.3 to 15% by mass based on the total amount of the cosmetic.

5. A cosmetic obtained by filling the multilayer cosmetic according to any one of Claims 1 to 4 into a dispenser-type container.

6. The cosmetic according to Claim 5, wherein the cosmetic is a base cosmetic.

7. The cosmetic according to claim 5 or 6, wherein the dispenser-type container is transparent.

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