JP2011213681A - Foaming cleansing cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aerosol type foaming cleansing cosmetic that not only forms foam of good quality but also exhibits excellent foam retention and excellent foam-formability at a low temperature.SOLUTION: The aerosol type foaming cleansing cosmetic comprises, charged in an aerosol foam can, a propellant and a stock solution composed of two layers of an emulsified layer and an aqueous layer and comprising 1-35 mass% of a surfactant, 5-85 mass% of an oily component and 10-90 mass% of water, each based on the whole composition, and forms foam by ejecting, by an action of the propellant, a W/O/W type emulsion formed by agitation at the time of ejection.

Description

  The present invention relates to a foam-type cleansing cosmetic, and more specifically to a so-called aerosol type cleansing cosmetic in which foam is formed by a propellant.

  The action of washing the skin such as the face is usually classified into two methods, oily face washing and aqueous face washing. For oil-based facial cleansing, an oil-in-water emulsifier type containing a large amount of liquid oil-based components or cleansing cosmetics centered on liquid oil-based components is used. For aqueous facial cleansing, aqueous cleansing products that use soap or surfactant as a cleaning agent are used. Is done. In aqueous facial cleansing, an aqueous cleansing agent is usually bubbled well with water, and the resulting foam is used to wash the face. At this time, in order to save the trouble of foaming, an aqueous carrier such as water is added in advance, and the pump-former-type cleaning cosmetic that is discharged as foam by ejecting this together with air from fine holes is also available. Is provided.

  The pump-former-type cleaning cosmetic is a liquid cleaning composition filled in a so-called pump-former container, and the filled cleaning composition is discharged in the form of foam by a pump operation. As such a pump former-type cleaning cosmetic, for example, JP 2003-96492 A (Patent Document 1) discloses a cleaning composition containing glycyrrhizic acid, an amino acid surfactant, and the like. ing. JP-A-2002-87942 (Patent Document 2) discloses a cleaning composition in which a nonionic surfactant, an anionic surfactant, and an amphoteric surfactant are added to suppress the viscosity to a predetermined value or less. . Japanese Patent Laid-Open No. 2002-47172 (Patent Document 3) discloses a skin cleansing composition containing an amphoteric surfactant and an acylated peptide or a salt thereof, and Japanese Patent Laid-Open No. 10-218744 (Patent Document 4). , N-long chain acylamino acid surfactants, alkyldimethylaminoacetic acid betaines, fatty acid alkylolamides, and polyhydric alcohols are blended, and a cleaning composition in which these are blended at a specific ratio is disclosed.

  On the other hand, aerosol-type products are provided in many fields including cosmetics from the viewpoint of convenience and the like. Unlike the pump-former-type cosmetics, the aerosol-type product discharges the stock solution filled by the action of the vaporized propellant in the form of foam. As an aerosol-type cleaning material, for example, JP 2010-24202 A (Patent Document 5) contains a liquid oil component comprising an oil and fat and / or an ester oil and a diglycerin fatty acid ester having a hydroxyl group having a predetermined configuration. A foam-like cleansing cosmetic is disclosed. JP-A-2006-347896 (Patent Document 6) discloses a cleansing cosmetic comprising a polyglycerin alkyl ether and a liquid oil and fat, and an O / W emulsified foamy aerosol containing liquid paraffin and a surfactant. Yes. JP 2005-325038 A (Patent Document 7) discloses a stock solution and a propellant containing 20 to 80% by mass of an oily component, 1 to 20% by mass of two types of polyglycerin fatty acid esters, and 20 to 80% by mass of water. A cleansing cosmetic composition comprising: JP 2001-316218 A (Patent Document 8) discloses a foam-type cleansing cosmetic using an ester oil having an oil component of 1 to 15% in water solubility and 6 to 15 carbon atoms. Has been.

  Various types of cleansing cosmetics and cleansing cosmetics that are discharged in the form of foam have been proposed, but any cleaning cosmetic (cleansing cosmetic) has good foaming (foaming properties) and foam. And the fineness of the foam are required, and various ideas have been made to meet these requirements.

  JP-A-2009-286769 (Patent Document 9) discloses a foamy aerosol composition which is a stock solution in a stable emulsified state and has good foamability. The stock solution in this aerosol composition consists of an O / W type emulsion composition composed of inulin laurylcarbamate as a surfactant. In this composition, not only forms a special emulsified structure in which lauryl carbamate inulin partially covers the oil droplets, but also makes use of the characteristics of lauryl carbamate ester that has low solubility in the water layer and oil layer, Even a small amount of use forms a stable emulsion with a large content of oily components. This inulin laurylcarbamate hardly inhibits the foaming power of the foaming agent even when it contains a foaming agent, so it can be used in combination with other surfactants.

JP 2003-96492 A JP 2002-87942 A JP 2002-47172 A JP-A-10-218744 JP 2010-24202 A JP 2006-347896 A JP 2005-325038 A JP 2001-316218 A JP 2009-286769 A

  By the way, in the face-washing cosmetics, from the viewpoint of good usability, there is a demand for cleaning cosmetics having both a cleansing function as an oily face-washing function and an aqueous face-washing function capable of removing aqueous stains. However, the pump foam-type cleaning cosmetics described in Patent Documents 1 to 4 are a class of aqueous facial cleansers that contain almost no oil component, and do not have a cleansing function as an oil cleanser. Moreover, the cleansing cosmetics disclosed in Patent Documents 5 and 6 are cleansing cosmetics that do not contain water, mainly oily components, and are less effective in removing aqueous stains. Patent Document 6 also describes an O / W emulsion-type cleaning material, but this also has a weak cleaning power against an oily foundation. Moreover, the cleansing cosmetics disclosed in Patent Documents 7 and 8 are emulsion-type cleaning cosmetics using specific oily components, respectively, and have a high content of oily components, both aqueous cleaning materials and cleansing functions. However, cleansing ability could not be said to be sufficient because an oily component that is relatively familiar to water is used. Under such circumstances, there has been a demand for a new formulation design for enhancing cleansing ability while having foaming properties and foam sustainability required for foamy cosmetics.

  On the other hand, the cosmetic disclosed in Patent Document 9 is intended for stable foam formation with as little surfactant as possible while containing a large amount of oil, but mainly for humans like hair cosmetics. It is a cosmetic that provides an emollient effect (moisturizing effect). Therefore, although it is an aerosol-type emulsified cosmetic with excellent foaming properties and stability, cleansing function and detergency against aqueous stains are not taken into consideration, and the detergency against aqueous stains and oily cosmetics is increased. There is nothing to mention about.

  The present invention has been made in view of the above-mentioned background art, and has foam properties having both functions of an aqueous facial cleanser and a cleansing cosmetic while having good foam formation such as foaming property and excellent detergency. The purpose is to provide cleansing cosmetics.

  The cleansing cosmetic of the present invention is an aerosol-type foam cleansing cosmetic comprising a stock solution and a propellant, and the stock solution comprises two layers of an emulsified layer and a water layer, and is 1% by mass or more based on the entire composition. It consists of a composition containing 35% by mass or less of a surfactant, 5% by mass or more and 85% by mass or less of an oily component, and 10% by mass or more and 90% by mass or less of water.

  According to the present invention, an aerosol type cleansing cosmetic that not only has good foam formation properties, such as fine foam and foam having good elasticity, but also has a good cleaning effect on both aqueous stains and oily cosmetics. Is provided.

  The foam cleansing cosmetic of the present invention forms a foam with a propellant and is composed of a stock solution and a propellant. The undiluted solution in the present invention is in a two-layer separated state when left standing, and the W / O type emulsion, which is the emulsified layer, drops into the aqueous layer by shaking well during use. Thus, a dispersed W / O / W type emulsion is obtained. This W / O / W type emulsion is discharged by the action of the propellant filled in the container to form a foam.

  The cleansing cosmetic of the present invention has both a cleansing function for removing oily cosmetics such as lipstick and an aqueous facial cleanser for removing aqueous stains. In order to achieve this object, in the present invention, an undiluted solution is mainly composed of an emulsified layer for exerting a cleansing function and an aqueous layer for removing aqueous dirt, and stirred at the time of use, and W / O / A W-type emulsion is formed.

  The emulsified layer is a W / O type emulsion and contains water, an oily component, and a surfactant. The undiluted | stock solution of this invention contains many oil-based components for exhibiting a cleansing function. This oil component is contained in the emulsified layer. The blending amount of the oily component is 5% or more and 85% or less, preferably 20% or more and 60% or less, with respect to the total amount of the cleansing composition, that is, the emulsified layer and the aqueous layer. When it exceeds 85%, foaming becomes worse. In this case, from the same viewpoint, the blending amount of the oil component in the emulsified layer is preferably 20% or more and 95% or less, and preferably 30% or more and 80% or less with respect to the entire emulsified layer. In the present specification, “%” means “% by mass” unless otherwise specified.

  The oily component is a substance that causes phase separation with water, and various oily components used in known cleansing cosmetics are exemplified. In the present invention, any oily component that can be used in various cleansing foams is not particularly limited. In addition, an oily component that is liquid at normal temperature is desirably used, but a semi-solid or solid oily component can also be used at normal temperature as long as it is compatible with the oil layer. The oily component may be derived from vegetable oils, animal oils, mineral oils, synthetic oils, and the like, but oils and higher fatty acids that are esters of glycerin and fatty acids, fatty acid esters that are esters of monoalcohol and fatty acids, waxes, waxes, hydrocarbons, The chemical structure such as higher alcohol and silicone oil is not questioned.

  Examples of oily components that can be used in the present invention include avocado oil, almond oil, olive oil, cacao oil, sesame oil, safflower oil, soybean oil, camellia oil, persic oil, castor oil, grape seed oil, macadamia nut oil, mink oil, Cottonseed oil, owl, coconut oil, egg yolk oil, palm oil, palm kernel oil, glyceryl triisooctanoate, glyceryl tri2-ethylhexanoate, cholesterol fatty acid esters, whale wax, carnauba wax, candelilla wax, beeswax, lanolin And waxes thereof, liquid lanolin, liquid paraffin, paraffin, petrolatum, ceresin, microcrystalline wax, hydrocarbons such as squalane, pristane, squalene, cetyl alcohol, stearyl alcohol, isostearyl alcohol, olefin Higher alcohols such as alcohol, octyldodecanol, cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, diisostearyl malate, di-2- Ethylene glycol ethylhexanoate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, tetra- Synthetic ester oils such as 2-ethylhexanoic acid pentane erythritol, diglycerin tetraoleate, diglycerin diolate, diglycerin trioleate, diglycerin tetraisostearate , Diglycerin triisostearate, diglycerin diisostearate, triglycerin pentaoleate, triglycerin tetraoleate, triglycerin trioleate, triglycerin diolate, triglycerin pentaisostearate, triglycerin tetraisostearate , Fatty acid esters such as triglycerin triisostearate and triglycerin diisostearate, chain polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane , Silicone oils such as cyclic polysiloxanes such as dodecamethylcyclohexanesiloxane, lauric acid, myristic acid, palmitic acid, stearic acid, isostear Examples include higher fatty acids such as phosphoric acid, and these oily components are used alone or in combination of two or more.

  The emulsified layer contains water. By using a W / O type (water-in-oil type) emulsified layer in which water is taken into the oil layer, the oil content of the applied oily cosmetic can be easily taken in and the cleansing effect is enhanced. The compounding quantity of the water in the undiluted | stock solution of this invention is 10% or more and 90% or less with respect to the whole composition, This part is used in order to form an emulsion layer. The amount of water used in the emulsified layer varies depending on the blending amount of the oil component and the nature of the oil component, and is 1% to 30%, preferably 5% to 20%, based on the entire composition. If the amount of water is greater than these, the amount of oily components will be relatively small, leading to a decrease in cleansing power to remove oily dirt, and if it is less, the feeling after use will be remarkably oily. I can not get a refreshing feel. In this case, from the same viewpoint, the blending amount of water in the emulsified layer is 5% or more and 80% or less, preferably 10% or more and 60% or less with respect to the entire emulsified layer.

  A surfactant is used for emulsification of the oily component and water. This surfactant forms a W / O type emulsion. Examples of the surfactant include nonionic surfactants, amphoteric surfactants, anionic surfactants, cationic surfactants, polymer surfactants, and silicone surfactants. Any type of surfactant that can form an O-type emulsion may be used. These surfactants are used not only in one kind but also in a mixture of two or more kinds as required.

  Examples of the nonionic surfactant include sorbitan fatty acid ester, glycerin fatty acid ester, decaglycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyethylene Examples include glycol fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene castor oil / hardened castor oil derivatives, and the like. Examples of the amphoteric surfactant include betaine acetate and lecithin. Examples of the anionic surfactant include alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, fatty acid soaps, and the like. Examples of the cationic surfactant include alkyl ammonium salts and alkyl benzyl ammonium salts. Examples of the polymeric surfactant include polyalkylvinylpyridinium, alkylphenol polymer derivatives, styrene / maleic acid polymerized derivatives, and the like. Examples of the silicone surfactant include polyoxyethylene / methylpolysiloxane copolymer, polyoxypropylene / methylpolysiloxane copolymer, and poly (oxyethylene / oxypropylene) / methylpolysiloxane copolymer. It is done.

  The compounding quantity of surfactant in the cleansing composition of this invention is 1-35 mass% with respect to the whole composition, and this part is used in order to form an emulsion layer. The amount of the surfactant used in the emulsified layer is appropriately determined according to the desired emulsified state, and the range thereof is 0.01% or more and 34.99% or less, preferably 0.01%. It is 10% or less and desirably 0.01% or more and 5% or less. If the amount is less than 0.01% with respect to the whole composition, the cleansing power is lowered, and even if an amount exceeding 10% is used, the cleansing power cannot be improved. In this case, from the same viewpoint, the amount of surfactant in the emulsion layer is preferably 0.01% or more and 40% or less, more preferably 0.1% or more and 20% or less, based on the entire emulsion layer. More preferably, it is good to set it as 1% or more and 10% or less.

  In the present invention, inulin alkylcarbamate is desirably used as the surfactant in the emulsion layer. The compounding amount of inulin alkylcarbamate is 0.01% or more and 5% or less, preferably 0.5% or more and 3% or less with respect to the whole composition, and in the emulsion layer, 0.01% with respect to the whole emulsion layer. It is 40% or less, preferably 0.1% or more and 20% or less, and more preferably 1% or more and 10% or less. That is, in the present invention, inulin alkylcarbamate is used for some, preferably all, of the surfactant used for forming the emulsion layer.

  Inulin alkylcarbamate is a compound that stabilizes emulsification by forming a three-dimensional barrier around oil droplets, and by forming an emulsion layer using inulin alkylcarbamate, foaming properties and fineness of foam, Sustainability is obtained. From such a viewpoint, it can be said that it is more preferable to use inulin alkylcarbamate as the sole surfactant.

  Inulin alkylcarbamate can be synthesized by reacting inulin with alkyl isocyanate. Inulin is a kind of polysaccharide, in which D-fructofuranose is linked in a β2 → 1 bond, and fructose at the hemiacetal type end is linked to D-glucose and α-glucopyranoside. The alkyl group of the alkyl isocyanate may be linear or branched, and those having about 2 to 18 carbon atoms are used, preferably inulin laurylcarbamate having 12 carbon atoms.

  However, as described above, a W / O emulsion may be formed without using inulin laurylcarbamate in the emulsion layer. When inulin laurylcarbamate is not used, a nonionic surfactant is suitable as a surfactant suitable for W / O emulsification, an ethylene oxide addition type nonionic surfactant, a polyhydric alcohol fatty acid ester type nonion Preferred examples of the surfactant include polyoxyalkylene-modified organopolysiloxane.

  An emulsified layer is formed from the above oily component, water, and a surfactant such as inulin alkylcarbamate. In the present invention, an aqueous layer further containing a surfactant is used.

  The water layer mainly functions to remove aqueous stains and foam. The aqueous layer contains water and a surfactant. The surfactant is not particularly limited as long as it is water-soluble, but a surfactant having a strong detergency is preferably used. Examples of the surfactant include nonionic surfactants, amphoteric surfactants, anionic surfactants, and cationic surfactants. Among these, among water-soluble nonionic surfactants, those having a high HLB, preferably those having an HLB of 7 or more are preferable from the viewpoint of dissolution in an aqueous layer. Specific examples include the various surfactants exemplified above, and polyoxyethylene alkyl ethers such as POE lauryl ether and POE isostearyl ether are preferably used among the nonionic surfactants exemplified above. , POE hardened castor oil ether, POE castor oil ether, and other ethers, polystearic acid POE glyceryl, oleic acid POE glyceryl and other polyoxyethylene glycerin fatty acid esters, monolauric acid POE sorbitan monooxypolyethylene glycol monolauric acid Such as polyethylene glycol fatty acid ester, polyethylene glycol lanolin fatty acid ester, etc., ether ester type, glyceryl monostearate, self-emulsifying monostearate group Polyglycerin fatty acid esters such as ceryl, sorbitan fatty acid esters such as sorbitan monolaurate, ethylene glycol fatty acid esters such as ethylene glycol monolaurate, propylene glycol fatty acid esters such as propylene glycol monostearate, pentaerythritol fatty acids such as pentaerythritol monostearate Esters, maltitol hydroxy fatty acid ethers, alkylated polysaccharides, alkyl (poly) glucosides, sugar derivatives such as sugar esters, alkyl glyceryl ethers such as α-monoisostearyl glyceryl ether, acetyl monoglycerides, lactic acid monoglycerides, citric acid monoglycerides, etc. Organic acid monoglyceride, palm oil fatty acid monoethanolamide, lauroyl monoethanolamide, myris Fatty acid alkanolamides such as toyl monoethanolamide, lauroyl diethanolamide, coconut oil fatty acid diethanolamide, lauroyl isopropanolamide, myristoyl isopropanolamide, coconut oil fatty acid isopropanolamide, POE lauroyl monoethanolamide, POE such as POE laurylamine and POE stearylamine Amine oxides such as alkylamine and lauryldimethylamine oxide, polyglycol diesters, and the like, and anionic surfactants include alkyl sulfates such as sodium lauryl sulfate and triethanolamine lauryl sulfate and salts thereof, polyoxyethylene lauryl Alkyl ether sulfuric acid such as sodium ether sulfate and salts thereof, polyoxyethylene octyl phenyl ether sulfuric acid Alkyl aryl ether sulfuric acid and salts thereof such as thorium, alkyl amide sulfuric acid and salts thereof such as sodium polyoxyethylene lauric acid amide ether sulfate, acyl ester sulfuric acid and salts thereof such as hydrogenated coconut oil fatty acid sodium glycerin sulfate, sodium lauryl sulfonate, etc. Alkyl sulfonic acids and salts thereof, coconut oil fatty acid acyl-N methyl taurine potassium, N-acyl methyl taurine and salts thereof such as lauroyl-N methyl taurine sodium, alkyl ether phosphoric acids such as polyoxyethylene lauryl ether sodium phosphate, and the like Salts thereof, alkyl aryl ether phosphates and salts thereof, fatty acid amide ether phosphates such as sodium polyoxyethylene lauryl amide ether phosphate and salts thereof, sodium N-lauroyl glutamate N-acylamino acids and salts thereof, etc., and amphoteric surfactants include carboxybetaine type such as lauryldimethylbetaine, aminocarboxylate type such as sodium laurylaminopropionate, 2-lauryl-N-carboxyl Examples include imidazoline type such as methyl-N-hydroxyethylimidazolinium betaine, lecithin and the like, and cationic surfactants such as monoalkyl quaternary ammonium salts such as lauryltrimethylammonium chloride and dialkyl quaternary ammonium salts such as dioctyldimethylammonium chloride. Quaternary ammonium salts, acylaminoalkyl quaternary ammonium salts such as lanolin fatty acid aminopropylethyldimethylammonium ethyl sulfate, dipalmityl polyethenoxyethylammonium chloride, distearyl polyester And alkylethenoxy quaternary ammonium salts such as tenoxymethylammonium chloride.

  The amount of the surfactant blended in the aqueous layer is an amount excluding the surfactant blended in the emulsified layer. The blending amount of the surfactant in the entire cleansing composition is 1% or more and 35% or less, and the blending amount in the aqueous layer is 0.01% or more and 34.99% or less, preferably 0. It is 0.01% or more and 30% or less, desirably 0.01% or more and 15% or less. When the content is less than 0.01% with respect to the whole composition, sufficient detergency cannot be obtained, and even when it exceeds 30% with respect to the whole composition, improvement in detergency cannot be expected. In this case, from the same viewpoint, the amount of the surfactant in the aqueous layer is 0.1% or more and 75% or less, preferably 1% or more and 50% or less with respect to the entire aqueous layer. .

  Further, the amount of water forming the water layer is an amount excluding the amount of water blended in the emulsified layer. That is, the blending amount in the entire cleansing composition is 10% or more and 90% or less, and the amount of water used as the aqueous layer is 5% or more and 80% or less, preferably 10% or more and 60% with respect to the entire cleansing composition. % Or less. When the amount of water in the water layer increases, the amount of the emulsified layer with respect to the amount of the water layer decreases, and the drop of the oily cosmetic becomes worse. In this case, the amount of water in the aqueous layer is preferably 10% or more and 90% or less. When the amount of water in the aqueous layer is reduced, the amount of the emulsified layer is increased and the aqueous stain is deteriorated. Thus, the amount of water and the amount of oil component in the present invention are determined by the balance between the desired cleansing power and aqueous cleaning power.

  In the present invention, in addition to the above-mentioned essential components, if necessary, common components used in cleansing compositions and aqueous cleaning agents are used as optional components in either one or both of the emulsified layer and the aqueous layer. For example, pH adjusters such as citric acid, phosphoric acid, sodium bicarbonate, polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol, diglycerin, 1, Polyhydric alcohols such as 2-pentanediol, 1,2-hexanediol, 1,2-octanediol, moisturizing ingredients such as sodium pyrrolidonecarboxylate, lactic acid, sodium lactate, plant extract, guar gum, quince seed, carrageenan, Galactan, gum arabic, pectin, mannan, starch, xanthan gum, curdlan, methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methylhydroxypropylcellulose, chondroit Sulfuric acid, dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, tragacanth gum, keratan sulfate, chondroitin, mucoitin sulfate, hydroxyethyl guar gum, carboxymethyl guar gum, dextran, keratosulfate, locust bean gum, succinoglucan, caronic acid , Chitin, chitosan, carboxymethyl chitin, agar, polyvinyl alcohol, polyvinyl pyrrolidone, carboxyvinyl polymer, sodium polyacrylate, polyethylene glycol, bentonite, etc. Liquid lower alcohols, vitamin A or derivatives thereof, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, Min B2 or derivatives thereof, vitamin B such as vitamin B12, vitamin B15 or derivatives thereof, vitamin E such as α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate, vitamin D, vitamin H, pantothene Various vitamins such as acid, pantethine and pyrroloquinoline quinone, fragrances and the like can be used as long as the effects of the present invention are not impaired.

  The above emulsified layer components are agitated and mixed to prepare a W / O type emulsion by a conventional method. In addition, the aqueous layer component is also stirred and mixed to prepare an aqueous layer. The prepared emulsified layer and aqueous layer are filled in a container for aerosol together with a propellant at a predetermined ratio to obtain the cleansing cosmetic of the present invention. The ratio of both is generally from 5:95 to 95: 5 for the emulsion layer: water layer. A propellant will not be restrict | limited especially if it can be used for the aerosol of cosmetics. For example, hydrocarbons such as liquefied petroleum gas (LPG) mainly composed of propane, n-butane, i-butane, etc., ethers such as dimethyl ether, methyl ethyl ether, diethyl ether, carbon dioxide gas, nitrogen gas, oxygen gas Compressed gas such as These propellants may be used alone or in admixture of two or more. The blending amount is 0.5% or more and 60% or less, preferably 3 based on the total amount of the stock solution and the propellant. 0.0% or more and 20% or less.

  The foam cleansing cosmetic is well shaken and discharged as a foam by the action of a propellant, used for washing the skin such as a face wash, and then washed away with water.

  Next, the present invention will be described in more detail based on the following examples. Needless to say, the following examples are illustrative and the present invention is not limited to the following examples.

  According to the composition table shown in Table 1, various foam cleansing cosmetics were prepared according to the following production methods. These cosmetics were subjected to sensory evaluation on the items of (1) foaming, (2) foam persistence, (3) foam elasticity, (4) detergency, and (5) irritation. The results are also shown in Table 1. Also, in Table 2, as a comparative example, a foam cleansing cosmetic comprising an O / W type emulsified layer (however, comparative product 7 is an aqueous detergent) was prepared according to the following production method, and as in the examples. evaluated.

〔Production method〕
1. After the components (a) and (c) are uniformly mixed at 80 ° C., the component (b) is added to form a water-in-oil emulsion layer.
2. The two components are uniformly mixed at 40 ° C to form an aqueous layer.
3. After cooling, add 1 to 2 and mix uniformly to prepare the stock solution.
4.3. An aerosol foam can is filled with 85 parts by mass of the stock solution and 15 parts by mass of LPG as a propellant under a pressure of 0.4 MPa to form an aerosol.

〔Production method〕
1. The ingredients b) and b) are mixed uniformly at 80 ° C.
2. C. Mix the ingredients of D and D uniformly at 80.degree.
3.1. 2. Add uniformly and cool to make the stock solution.
4.3. An aerosol foam can is filled with 85 parts by mass of the stock solution and 15 parts by mass of LPG as a propellant under a pressure of 0.4 MPa to form an aerosol.

〔Evaluation methods〕
Each cleansing cosmetic was evaluated in 7 stages according to the following absolute evaluation criteria for the evaluation items (1) to (5) by 10 sensory test panels. The table shows the average values of the panels. However, with regard to cleanability, apply the cleansing evaluation lipstick of the following prescription to the inner arm, and after 1 hour of application, apply each cosmetic to the application site and evaluate the stain removal when washed off with hot water at 40 ° C. did. As for irritation, a patch test tape (2 cm × 4 cm) was applied to the inner side of the lower arm and peeled after 1 minute. 0.03 g of each cosmetic material was applied to the tape stripping site, rubbed by hand 10 times, and then the tingling sensation after the cosmetic material was washed and removed with water was measured.

[Lipstick for cleaning performance evaluation]
(component)
Microcrystalline wax 10 parts by weight Solid paraffin 5 parts by weight Squalane 30 parts by weight Carnauba wax 10 parts by weight Owl 5 parts by weight Polyethylene 5 parts by weight Castor oil 20 parts by weight Dye 15 parts by weight

[Absolute evaluation criteria]
(Score): (Evaluation)
6: Very good 5: Good 4: Somewhat good 3: Normal 2: Somewhat bad 1: Bad 0: Very bad

  As is apparent from the results of Tables 1 and 2, the foam cleansing cosmetics that are the products of the present invention are all items in foam fineness, foam persistence, detergency, foam elasticity, and irritation. And it had the characteristic outstanding compared with the foaming cleansing cosmetics which are comparative products. In particular, Comparative products 1 to 3 that do not use inulin cannot form a good W / O / W emulsion, and even if the amount of the surfactant is increased (Comparative products 4 to 6), the detergency does not increase. Comparative products 8 to 10, which are emulsifying type cleansing foams, are examples using inulin laurylcarbamate as in the case of the actual product. In comparison with the product of the present application, it was inferior in cleaning power and foam elasticity.

Various cleansing cosmetics were prepared as shown below. All of the cleansing cosmetics showed good detergency and foam formation.
(Prescription Example 1)
Compounding ingredients Compounding amount (% by mass)
(1) Liquid paraffin 10.0
(2) Olive oil 20.0
(3) Dineopentanoic acid diethylpentanediol 5.0
(4) Inulin lauryl carbamate 0.5
(5) Purified water 10.0
(6) Propylene glycol 10.0
(7) Palm oil fatty acid diethanolamide 2.5
(8) Cocoyl glutamic acid triethanolamine 10.0
(9) Purified water residue A W / O type emulsion layer was formed from (1) to (5), an aqueous layer was formed from (6) to (9), and both were mixed to prepare a stock solution. An aerosol foam can was filled with 85 parts by mass of this stock solution and 15 parts by mass of LPG as a propellant under a pressure of 0.4 MPa to obtain an aerosol.

(Prescription example 2)
Compounding ingredients Compounding amount (% by mass)
(1) Isostearyl octyldodecanate 15.0
(2) Decamethylcyclopentasiloxane 30.0
(3) Inulin laurylcarbamate 1.0
(4) Purified water 10.0
(5) Diglycerin 5.0
(6) 1,3-butylene glycol 10.0
(7) Palm oil fatty acid diethanolamide 3.5
(8) Lauroyl glutamic acid triethanolamine 9.5
(9) Palm oil fatty acid potassium 5.0
(10) Purified water residue A W / O emulsion layer was formed from (1) to (4), an aqueous layer was formed from (5) to (10), and both were mixed to prepare a stock solution. An aerosol foam can was filled with 85 parts by mass of this stock solution and 15 parts by mass of LPG as a propellant under a pressure of 0.4 MPa to obtain an aerosol.

(Formulation Example 3) Facial cleanser for sensitive skin
Compounding ingredients Compounding amount (% by mass)
(1) Squalane 25.0
(2) Polyoxyethylene / methylpolysiloxane copolymer 0.3
(3) Inulin laurylcarbamate 0.3
(4) Purified water 5.0
(5) 1.3-Butylene glycol 5.0
(6) Diglycerin 15.0
(7) Dipotassium glycyrrhizinate 0.1
(8) Lauroyl glutamic acid triethanolamine 0.5
(9) Triethanolamine cocoyl glutamate 0.5
(10) Purified water residue A W / O emulsion layer was formed from (1) to (4), an aqueous layer was formed from (5) to (10), and both were mixed to prepare a stock solution. An aerosol foam can was filled with 85 parts by mass of this stock solution and 15 parts by mass of LPG as a propellant under a pressure of 0.4 MPa to obtain an aerosol.

(Prescription Example 4)
Compounding ingredients Compounding amount (% by mass)
(1) Liquid paraffin 20.0
(2) Decamethylcyclopentasiloxane 15.0
(3) N-lauroyl glutamate di (phytosteryl / octyldodecyl)
0.1
(4) Tridecyl isononanoate 20.0
(5) Polyglyceryl laurate 0.5
(6) Inulin laurylcarbamate 1.0
(7) Purified water 5.0
(8) 1.3-Butylene glycol 5.0
(9) Amidopropyl betaine laurate 20.0
(10) Palm oil fatty acid potassium 4.0
(11) Cocoyl glutamic acid triethanolamine 10.0
(12) Purified water residue A W / O emulsion layer was formed from (1) to (7), an aqueous layer was formed from (8) to (12), and both were mixed to prepare a stock solution. An aerosol foam can was filled with 85 parts by mass of this stock solution and 15 parts by mass of LPG as a propellant under a pressure of 0.4 MPa to obtain an aerosol.

(Prescription Example 5)
Compounding ingredients Compounding amount (% by mass)
(1) Liquid paraffin 50.0
(2) Olive oil 30.0
(3) Dineopentanoic acid diethylpentanediol 5.0
(4) Inulin lauryl carbamate 0.5
(5) Purified water 5.0
(6) Propylene glycol 1.0
(7) Palm oil fatty acid diethanolamide 0.5
(8) Cocoyl glutamic acid triethanolamine 1.0
(9) Purified water residue A W / O type emulsion layer was formed from (1) to (5), an aqueous layer was formed from (6) to (9), and both were mixed to prepare a stock solution. An aerosol foam can was filled with 85 parts by mass of this stock solution and 15 parts by mass of LPG as a propellant under a pressure of 0.4 MPa to obtain an aerosol.

  ADVANTAGE OF THE INVENTION According to this invention, the aerosol-type foam cleansing cosmetic in which stable and good quality foam is formed is provided.

Claims (6)

An aerosol foam cleansing cosmetic comprising a stock solution containing a surfactant, an oil component and water and a propellant,
The stock solution is composed of two layers, an emulsified layer and an aqueous layer. The surfactant is 1% by mass to 35% by mass and the oily component is 5% by mass to 85% by mass and 10% by mass to 90% by mass with respect to the entire composition. Foam cleansing cosmetic containing less than mass% water.   The emulsified layer contains 0.01% by mass to 10% by mass of a surfactant, 5% by mass to 85% by mass of an oil component, and 1% by mass to 30% by mass of water based on the stock solution. The foamy cleansing cosmetic according to 1.   The foam cleansing cosmetic according to claim 1 or 2, wherein the aqueous layer contains 0.01% by mass to 30% by mass of a surfactant and 5% by mass to 80% by mass of water based on the stock solution.   The foaming cleansing cosmetic according to any one of claims 1 to 3, wherein the emulsified layer contains 0.01% by mass or more and 5% by mass or less of inulin alkylcarbamate based on the stock solution.   The foam cleansing cosmetic composition according to any one of claims 1 to 4, wherein the inulin alkylcarbamate is inulin laurylcarbamate.   The foam according to any one of claims 1 to 5, wherein a blending amount of the propellant is 0.5 mass% or more and 60 mass% or less based on a total amount of the stock solution and the propellant. Sex cleansing cosmetics.