Water-in-oil emulsion cosmetic composition

Abstract

Provided is a water-in-oil emulsion cosmetic composition that, compared to oil-based cosmetic compositions having the same properties, can realize better spread.　The water-in-oil emulsion cosmetic composition according to the present invention comprises: an oily component selected from the group consisting of animal / vegetable oils and hydrocarbon oils, having a melting point of 65-100°C, and being solid at 25°C (component A); an oily component selected from the group consisting of vegetable oils and fatty acid triglycerides, and being liquid at 25°C (component B); a non-ionic surfactant having a linear saturated alkyl chain with at least 13 carbons and having an HLB value of 2.8-8.0 (component C); and water (component D), where the content of component D is 15.0-50.0 mass%.

Description

Water-in-oil emulsion cosmetic composition

[0001] The present invention relates to a water-in-oil emulsion cosmetic composition.

[0002] Known oily cosmetic compositions include hair oil, hair stick, hair clay, and hair balm.

[0003] For example, Patent Document 1 listed below discloses an oily hair cosmetic composition containing (A) 12-hydroxystearic acid, (B) one or more hydrocarbon oils, and (C) one or more silicone derivatives.

[0004] Furthermore, Patent Document 2 listed below discloses a hair balm that contains a liquid oil (A) and a solidifying agent (B) that solidifies the liquid oil (A), in which the content of the liquid oil (A) is 70% by mass to 99% by mass and the content of the solidifying agent (B) is 1% by mass to 30% by mass.

[0005] JP 2000-143454 A JP 2020-050613 A

[0006] Oil-based cosmetic compositions having moderately hard properties, such as hair balms, and oil-based cosmetic compositions having hard properties, such as hair clays, are known. These oil-based cosmetic compositions contain an oil component that is solid at 25°C to impart hardness to the oil-based cosmetic composition.

[0007] However, it is difficult to sufficiently improve the spreadability of conventional oil-based cosmetic compositions that contain oily ingredients that are solid at 25°C.

[0008] An object of the present invention is to provide a water-in-oil emulsion cosmetic composition that can spread better than an oil-based cosmetic composition having the same properties.

[0009] The present inventors have conducted extensive research into cosmetic compositions that can spread better than oil-based cosmetic compositions having the same properties, while still containing an oily component that is solid at 25° C. As a result, the present inventors have found that the above-mentioned problems can be solved by the following cosmetic composition.

[0010] The present invention provides a water-in-oil emulsion cosmetic composition comprising the following components (A), (B), (C), and (D), wherein the content of component (D) is 15.0 mass% or more and 50.0 mass% or less:

[0011] Component (A): An oily component that is solid at 25°C and has a melting point of 65°C or higher and 100°C or lower, selected from the group consisting of animal and vegetable oils and hydrocarbon oils. Component (B): An oily component that is liquid at 25°C, selected from the group consisting of vegetable oils and fatty acid triglycerides. Component (C): A nonionic surfactant that has a linear saturated alkyl chain having 13 or more carbon atoms and an HLB value of 2.8 or higher and 8.0 or lower. Component (D): Water.

[0012] The water-in-oil emulsion cosmetic composition of the present invention preferably contains the following component (E).

[0013] Component (E): Polyglyceryl polyricinoleate

[0014] The water-in-oil emulsion cosmetic composition of the present invention preferably contains the following component (F).

[0015] Component (F): a phosphate surfactant having an HLB value of more than 8.0 and not more than 12.0

[0016] In the water-in-oil emulsion cosmetic composition of the present invention, the content of the component (B) and the oily component other than component (B) that is liquid at 25°C and is selected from the group consisting of ester oil, hydrocarbon oil, and silicone oil is preferably 15.0% by mass or more and 70.0% by mass or less.

[0017] The water-in-oil emulsion cosmetic composition of the present invention preferably contains the following component (G), and the content of component (B) and an oily component other than component (B) that is liquid at 25°C and is selected from the group consisting of ester oils, hydrocarbon oils, and silicone oils is 5.0% by mass or more and 25.0% by mass or less.

[0018] Component (G): Powder

[0019] The water-in-oil emulsion cosmetic composition of the present invention is preferably a hair cosmetic composition.

[0020] The water-in-oil emulsion cosmetic composition of the present invention contains specific component (A), specific component (B), specific component (C), and specific component (D), and the content of component (D) is 15.0 mass% or more and 50.0 mass% or less. Because the water-in-oil emulsion cosmetic composition of the present invention has the above-mentioned configuration, it can spread more easily than an oil-based cosmetic composition having the same properties.

[0021] When the water-in-oil emulsion cosmetic composition of the present invention is a hair cosmetic composition, component (B) can provide good hair management, and when the water-in-oil emulsion cosmetic composition of the present invention is a skin cosmetic composition, component (B) can provide a good moisturizing feel to the skin.

[0022] The present invention will be described in detail below.

[0023] The water-in-oil emulsion cosmetic composition of the present invention comprises an oily component that is solid at 25°C and has a melting point of 65°C or higher and 100°C or lower, and is selected from the group consisting of animal and vegetable oils and hydrocarbon oils; an oily component that is liquid at 25°C and is selected from the group consisting of vegetable oils and fatty acid triglycerides; a nonionic surfactant that has a linear saturated alkyl chain with 13 or more carbon atoms and an HLB value of 2.8 or higher and 8.0 or lower; and water.

[0024] In this specification, the above-mentioned "oil component which is solid at 25°C and has a melting point of 65°C or higher and 100°C or lower, selected from the group consisting of animal and vegetable oils and hydrocarbon oils" may be referred to as "component (A)."

[0025] In this specification, the above-mentioned "oil component that is liquid at 25°C and is selected from the group consisting of vegetable oils and fatty acid triglycerides" may be referred to as "component (B)".

[0026] In this specification, the above-mentioned "nonionic surfactant having a linear saturated alkyl chain with 13 or more carbon atoms and an HLB value of 2.8 or more and 8.0 or less" may be referred to as "component (C)."

[0027] In this specification, the above-mentioned "water" may be referred to as "component (D)."

[0028] Therefore, the water-in-oil emulsion cosmetic composition of the present invention comprises component (A), component (B), component (C), and component (D).

[0029] In the water-in-oil emulsion cosmetic composition of the present invention, the content of component (D) is 15.0% by mass or more and 50.0% by mass or less.

[0030] The water-in-oil emulsion cosmetic composition of the present invention has the above-mentioned configuration, and therefore can spread more easily than an oil-based cosmetic composition having the same properties. For example, when the water-in-oil emulsion cosmetic composition of the present invention is a hair balm, it can spread more easily than a conventional hair balm (oil-based cosmetic composition). Furthermore, when the water-in-oil emulsion cosmetic composition of the present invention is a hair clay, it can spread more easily than a conventional hair clay (oil-based cosmetic composition).

[0031] The reason why the water-in-oil emulsion cosmetic composition of the present invention can spread better than an oil-based cosmetic composition having the same properties is presumed to be as follows.

[0032] In typical oil-based cosmetic compositions, hardness is imparted by the formation of a specific structure in an oil component that is liquid at 25°C due to the oil component being solid at 25°C. However, in oil-based cosmetic compositions, the size of the above structure is relatively large, and it is thought that the spreadability cannot be sufficiently improved. In contrast, in the water-in-oil emulsion cosmetic composition of the present invention, hardness is imparted by the structure formed by the oil component that is solid at 25°C (component (A)), but the presence of the dispersed aqueous phase inhibits the formation of the above structure to some extent, and the size of the structure formed is relatively small. For this reason, the water-in-oil emulsion cosmetic composition of the present invention can spread better than oil-based cosmetic compositions having the same properties.

[0033] It should be noted that the above mechanism is merely a hypothesis, and the reason why the water-in-oil emulsion cosmetic composition of the present invention can spread better than an oil-based cosmetic composition having the same properties is not limited to this.

[0034] Furthermore, the water-in-oil emulsion cosmetic composition of the present invention can effectively reduce stickiness.

[0035] When the water-in-oil emulsion cosmetic composition of the present invention is a hair cosmetic composition, it can keep hair in place well.

[0036] When the water-in-oil emulsion cosmetic composition of the present invention is a skin cosmetic composition, it can impart a good moisturizing feeling to the skin.

[0037] The water-in-oil emulsion cosmetic composition of the present invention also has improved applicability, allowing the water-in-oil emulsion cosmetic composition taken up with the fingers to be easily spread on the palm, and also allowing the water-in-oil emulsion cosmetic composition to be easily and uniformly transferred to the hair or skin when applied to the hair or skin.

[0038] Furthermore, the water-in-oil emulsion cosmetic composition of the present invention can have good wash-off properties.

[0039] The water-in-oil emulsion cosmetic composition of the present invention may contain polyglyceryl polyricinoleate.

[0040] In this specification, the above-mentioned "polyglyceryl polyricinoleate" may be referred to as "component (E)."

[0041] The water-in-oil emulsion cosmetic composition of the present invention may contain a phosphate surfactant having an HLB value of more than 8.0 and not more than 12.0.

[0042] In this specification, the above-mentioned "phosphate surfactant having an HLB value of more than 8.0 and not more than 12.0" may be referred to as "component (F)."

[0043] The water-in-oil emulsion cosmetic composition of the present invention may contain powder.

[0044] In this specification, the above-mentioned "powder" may be referred to as "component (G)".

[0045] The water-in-oil emulsion cosmetic composition of the present invention may contain components other than components (A) to (G).

[0046] The above-mentioned components, for example, component (A), component (B), component (C), component (E), component (F), component (G), and other components, may each be used alone or in combination of two or more.

[0047] In this specification, "solid at 25°C" means a state that is not fluid at 25°C, and includes a state that is semi-solid (paste-like, etc.) at 25°C. On the other hand, "liquid at 25°C" means a state that is fluid at 25°C.

[0048] In addition, in this specification, the content of each component refers to the total content of all of the components contained in the water-in-oil emulsion cosmetic composition. For example, the content of component (A) refers to the total content of all of the components (A) in the water-in-oil emulsion cosmetic composition.

[0049] Hereinafter, each component used in the water-in-oil emulsion cosmetic composition of the present invention will be described in detail.

[0050] (Component (A)) Component (A) is an oily component that is solid at 25°C (at least one oily component that is solid at 25°C) and has a melting point of 65°C or higher and 100°C or lower, selected from the group consisting of animal and vegetable oils and hydrocarbon oils. Component (A) is an excipient. Furthermore, use of component (A) can improve hair manageability. Only one type of component (A) may be used, or two or more types may be used in combination.

[0051] In this specification, of component (A), the above-mentioned "animal and vegetable oil" may be referred to as "component (A1)," and the above-mentioned "hydrocarbon oil" may be referred to as "component (A2)."

[0052] Therefore, component (A) is an oily component that is solid at 25°C and has a melting point of 65°C or higher and 100°C or lower, and is selected from the group consisting of components (A1) and (A2). The melting point of component (A) is preferably 70°C or higher.

[0053] Component (A1) is an animal or vegetable oil that is solid at 25° C. and has a melting point of 65° C. or higher and 100° C. or lower. The melting point of component (A1) is preferably 70° C. or higher.

[0054] Examples of the component (A1) include carnauba wax, sunflower seed wax, candelilla wax, rice bran wax, and hydrogenated castor oil.

[0055] Component (A2) is a hydrocarbon oil that is solid at 25° C. and has a melting point of 65° C. or higher and 100° C. or lower. The melting point of component (A2) is preferably 70° C. or higher.

[0056] Examples of the component (A2) include microcrystalline wax, paraffin wax, polyethylene wax, ceresin, ozokerite, and synthetic waxes (such as Fischer-Tropsch wax).

[0057] From the viewpoint of further suppressing stickiness, it is preferable that component (A) contains component (A2). From the viewpoint of further improving the durability of the styled hairstyle, it is more preferable that component (A) contains component (A1) and component (A2). In this case, it is possible to further improve styliability and further improve hair manageability.

[0058] The content of component (A1) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1.0% by mass or more, and preferably 15.0% by mass or less, more preferably 10.0% by mass or less, and even more preferably 5.0% by mass or less. When the content of component (A1) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the durability of the styled hairstyle can be further improved. When the content of component (A1) is equal to or less than the above-mentioned upper limit, stickiness can be effectively suppressed.

[0059] The content of component (A2) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 3.0% by mass or more, more preferably 5.0% by mass or more, even more preferably 7.0% by mass or more, and preferably 35.0% by mass or less, more preferably 30.0% by mass or less, and even more preferably 25.0% by mass or less. When the content of component (A2) is equal to or greater than the lower limit, shapability can be further improved and hair manageability can be further improved. When the content of component (A2) is equal to or less than the upper limit, spreadability can be further improved. Furthermore, emulsion stability can be further improved.

[0060] The content of component (A) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 5.0% by mass or more, more preferably 7.0% by mass or more, even more preferably 10.0% by mass or more, and preferably 35.0% by mass or less, more preferably 30.0% by mass or less, and even more preferably 25.0% by mass or less. When the content of component (A) is equal to or greater than the lower limit, shapability can be further improved and hair manageability can be further improved. When the content of component (A) is equal to or less than the upper limit, spreadability can be further improved. Furthermore, emulsion stability can be further improved.

[0061] (Component (B)) Component (B) is an oily component that is liquid at 25°C (at least one oily component that is liquid at 25°C) selected from the group consisting of vegetable oils and fatty acid triglycerides. By using component (B) in combination with component (A), it is possible to improve spreadability. Furthermore, by using component (B), it is possible to improve hair manageability. Furthermore, by using component (B), it is possible to impart a good moisturizing feel to the skin. Only one type of component (B) may be used, or two or more types may be used in combination.

[0062] In this specification, of component (B), the above-mentioned "vegetable oil" may be referred to as "component (B1)," and the above-mentioned "fatty acid triglyceride" may be referred to as "component (B2)."

[0063] Therefore, component (B) is an oily component that is liquid at 25°C and is selected from the group consisting of components (B1) and (B2).

[0064] Component (B1) is a vegetable oil that is liquid at 25°C.

[0065] Examples of component (B1) include avocado oil, argan oil, olive oil, rice bran oil, soybean oil, corn oil, castor oil, grape seed oil, kukui nut oil, jojoba oil, macadamia nut oil, crambe abyssinica seed oil, eucalyptus oil, coconut oil, safflower oil, palm oil, palm kernel oil, almond oil, rosehip oil, camellia oil, kiwi fruit seed oil, camellia oil, apricot kernel oil, sesame oil, soybean oil, hazelnut oil, peppermint oil, carrot oil, lavender oil, meadowfoam oil, and sunflower oil.

[0066] Component (B2) is a fatty acid triglyceride that is liquid at 25°C.

[0067] Examples of component (B2) include glyceryl tri-2-ethylhexanoate (triethylhexanoin), glyceryl tricaprylate, glyceryl tricaprate, glyceryl triundecylate, glyceryl tristearate, glyceryl triisostearate, glyceryl tripalmitate, glyceryl triundecanoate, glyceryl tri-2-heptylundecanoate, glyceryl tribehenate, glyceryl trimyristate, glyceryl trilaurate, glyceryl trioleate, glyceryl trilinoleate, tripalmitate, glyceryl triisostearate ... Glyceryl Lumitoleate, Glyceryl Triacetyl Hydroxystearate, Glyceryl Triacetylricinoleate, Glyceryl Trihydroxystearate, Caprylic / Capric Triglyceride, Caprylic / Capric / Myristic / Stearic Triglyceride, Caprylic / Capric / Isostearic / Adipic Triglyceride, Caprylic / Capric / Lauric Triglyceride, Caprylic / Capric / Linoleic Triglyceride, Caprylic / Capric Triglyceride Glyceryl Tritate (Tallowate / Mink Oil / Cod Liver Oil), Glyceryl Tritate (Mink Oil / Palmitate), Glyceryl Tritate (Coconut Oil), Glyceryl Tritate (Lanolin), Glyceryl Tritate (Ricinoleate / Caproate / Caprylate / Caprate), C10-18 Triglyceride, C12-18 Triglyceride, Hydrogenated C12-18 Triglyceride, C12-20 Triglyceride, tri-branched fatty acid (C18-36) glyceryl, tri-branched fatty acid (C10-40) glyceryl, tri-branched fatty acid (C12-31) glyceryl, (hydrogenated rosin / diisostearate) glyceryl, tri-(palm oil fatty acid / palm kernel oil fatty acid / olive oil fatty acid / macadamia oil fatty acid / rapeseed oil fatty acid) glyceryl, tri-(castor oil fatty acid / olive oil fatty acid) glyceryl, tri-(behenate / isostearate / eicosanedioate) glyceryl, and tri-(mink oil fatty acid / palmitate) glyceryl.

[0068] Component (B) preferably contains component (B2), and more preferably contains component (B1) and component (B2). In this case, the spreadability can be further improved and stickiness can be further reduced.

[0069] The content of component (B1) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 0.3% by mass or more, more preferably 1.0% by mass or more, and preferably 20.0% by mass or less, more preferably 15.0% by mass or less. When the content of component (B1) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the spreadability can be further improved. In addition, the manageability of hair can be further improved.

[0070] The content of component (B2) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 1.0% by mass or more, more preferably 3.0% by mass or more, and preferably 50.0% by mass or less, more preferably 40.0% by mass or less. When the content of component (B2) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the spreadability can be further improved. In addition, the manageability of hair can be further improved.

[0071] The content of component (B) in 100% by mass of the water-in-oil emulsion cosmetic composition is preferably 3.0% by mass or more, more preferably 5.0% by mass or more, and preferably 50.0% by mass or less, more preferably 40.0% by mass or less. When the content of component (B) is equal to or greater than the above lower limit and equal to or less than the above upper limit, the spreadability can be further improved. In addition, the manageability of hair can be further improved.

[0072] (Component (C)) Component (C) is a nonionic surfactant having a linear saturated alkyl chain with 13 or more carbon atoms and an HLB value of 2.8 or more and 8.0 or less. Component (C) is an emulsifier. By using component (C), a water-in-oil emulsion cosmetic composition can be obtained. Only one type of component (C) may be used, or two or more types may be used in combination.

[0073] Component (C) has a linear saturated alkyl chain having at least 13 carbon atoms. The number of carbon atoms in the linear saturated alkyl chain is preferably at least 15, more preferably at least 17, and preferably at most 23. When the number of carbon atoms is at least the above lower limit and at most the above upper limit, emulsification properties can be further improved.

[0074] Component (C) preferably does not have a branched saturated alkyl chain having 13 or more carbon atoms, and also preferably does not have an unsaturated alkyl chain having 13 or more carbon atoms. Component (C) more preferably does not have both a branched saturated alkyl chain having 13 or more carbon atoms and an unsaturated alkyl chain having 13 or more carbon atoms.

[0075] The HLB value of component (C) is 2.8 or more and 8.0 or less, preferably 3.0 or more, more preferably 3.2 or more, and preferably 7.0 or less, more preferably 6.0 or less. When the HLB value is equal to or more than the above lower limit and equal to or less than the above upper limit, the emulsification properties of water-in-oil types can be further improved.

[0076] Examples of component (C) include glycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, and polyoxyethylene alkyl ethers.

[0077] Examples of the glycerin fatty acid esters include glyceryl behenate, glyceryl stearate, glyceryl palmitate, and glyceryl myristate. Examples of the polyglycerin fatty acid esters include diglyceryl monostearate, decaglyceryl tristearate, polyglyceryl-4 pentastearate, polyglyceryl-6 pentastearate, polyglyceryl-10 pentastearate, polyglyceryl-10 decastearate, and polyglyceryl-10 hepta(behenate / stearate). Examples of the sorbitan fatty acid esters include sorbitan stearate and sorbitan palmitate. Examples of the polyoxyethylene alkyl ether include polyoxyethylene alkyl ethers in which the average number of moles of oxyethylene added is 2 or more and 5 or less and the number of carbon atoms in the alkyl group is 14 or more and 22 or less, and more specific examples include POE(5) behenyl ether, POE(2) cetyl ether, and POE(2) stearyl ether.

[0078] Component (C) preferably contains a nonionic surfactant (at least one nonionic surfactant) selected from the group consisting of sorbitan stearate, glyceryl behenate, and glyceryl stearate, and more preferably contains a nonionic surfactant (at least one nonionic surfactant) selected from the group consisting of sorbitan stearate and glyceryl behenate. In this case, the emulsification properties of the water-in-oil type can be further improved.

[0079] In this specification, the above-mentioned "nonionic surfactant selected from the group consisting of sorbitan stearate, glyceryl behenate, and glyceryl stearate" may be referred to as "component (C1)."

[0080] Therefore, it is preferable that component (C) includes component (C1). The water-in-oil emulsion cosmetic composition preferably includes component (C1).

[0081] The content of component (C1) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and preferably 10.0% by mass or less, and more preferably 7.0% by mass or less. When the content of component (C1) is equal to or greater than the above lower limit and equal to or less than the above upper limit, the emulsification properties of the water-in-oil emulsion cosmetic composition can be further improved.

[0082] The content of component (C) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and preferably 10.0% by mass or less, and more preferably 7.0% by mass or less. When the content of component (C) is equal to or more than the above lower limit and equal to or less than the above upper limit, the emulsification properties of the water-in-oil emulsion cosmetic composition can be further improved.

[0083] (Component (D)) Component (D) is water. Component (D) is preferably purified water.

[0084] From the viewpoint of forming a water-in-oil emulsion system, the content of component (D) is 15.0% by mass or more and 50.0% by mass or less, based on 100% by mass of the water-in-oil emulsion cosmetic composition.

[0085] The content of component (D) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 20.0% by mass or more, more preferably 25.0% by mass or more, and preferably 45.0% by mass or less, more preferably 40.0% by mass or less. When the content of component (D) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, emulsion stability can be further improved.

[0086] (Component (E)) Component (E) is polyglyceryl polyricinoleate. The water-in-oil emulsion cosmetic composition preferably contains component (E). Use of component (E) can enhance the dispersion stability of the water-in-oil emulsion cosmetic composition. More specifically, use of component (E) can effectively suppress sedimentation of emulsified particles (aqueous phase). This can improve the handleability, etc., of the water-in-oil emulsion cosmetic composition during the process of filling it into a container. Only one type of component (E) may be used, or two or more types may be used in combination.

[0087] The average number of moles of glycerin added in component (E) is preferably 2 or more, more preferably 3 or more, and preferably 10 or less, more preferably 7 or less.

[0088] Examples of component (E) include polyglyceryl-3 polyricinoleate, polyglyceryl-5 polyricinoleate, and polyglyceryl-6 polyricinoleate.

[0089] The content of component (E) in 100% by mass of the water-in-oil emulsion cosmetic composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 10.0% by mass or less, and more preferably 5.0% by mass or less. When the content of component (E) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the dispersion stability of the water-in-oil emulsion cosmetic composition can be further improved.

[0090] (Component (F)) Component (F) is a phosphate surfactant having an HLB value of more than 8.0 and not more than 12.0. The water-in-oil emulsion cosmetic composition preferably contains component (F). By using component (F), emulsion stability can be further improved. Only one type of component (F) may be used, or two or more types may be used in combination.

[0091] The HLB value of component (F) is preferably 8.1 or more, more preferably 9.0 or more, and preferably 11.5 or less.

[0092] Examples of component (F) include monoalkyl phosphate salts such as sodium lauryl phosphate, sodium cetyl phosphate, and diethanolamine cetyl phosphate; and polyoxyethylene alkyl ether phosphate salts such as polyoxyethylene lauryl ether sodium phosphate, polyoxyethylene cetyl ether sodium phosphate, polyoxyethylene oleyl ether sodium phosphate, polyoxyethylene alkylphenyl ether sodium phosphate, and polyoxyethylene alkylphenyl ether triethanolamine phosphate.

[0093] Component (F) preferably contains a phosphate surfactant (at least one phosphate surfactant) selected from the group consisting of alkyl phosphate esters and / or salts thereof, and polyoxyalkylene alkyl ether phosphates and / or salts thereof.

[0094] In this specification, the above-mentioned "phosphate surfactant selected from the group consisting of alkyl phosphate esters and / or salts thereof, and polyoxyalkylene alkyl ether phosphates and / or salts thereof" may be referred to as "component (F1)," the above-mentioned "alkyl phosphate esters and / or salts thereof" may be referred to as "component (F11)," and the above-mentioned "polyoxyalkylene alkyl ether phosphates and / or salts thereof" may be referred to as "component (F12)."

[0095] Therefore, component (F) preferably includes component (F1). Component (F1) is a phosphate surfactant selected from the group consisting of components (F11) and (F12). The water-in-oil emulsion cosmetic composition preferably includes component (F1).

[0096] Component (F11) may be an alkyl phosphate ester, an alkyl phosphate ester salt, or both an alkyl phosphate ester and an alkyl phosphate ester salt.

[0097] The alkyl phosphate ester is a compound in which the hydrogen atom of one or more of the three hydroxyl groups of phosphoric acid is substituted with an alkyl group. The alkyl phosphate ester may be a monoester, a diester, a triester, or a mixture of two or more of these.

[0098] The number of carbon atoms in the alkyl group of the ester moiety in the alkyl phosphate ester is preferably 12 or more, more preferably 14 or more, and preferably 36 or less, more preferably 30 or less, and even more preferably 22 or less. The alkyl group of the ester moiety in the alkyl phosphate ester may be linear or branched, but is preferably linear.

[0099] Examples of the salts in the alkyl phosphate ester salt include inorganic salts, organic amine salts, and basic amino acid salts. Examples of the inorganic salts include alkali metal salts such as sodium salts and potassium salts; alkaline earth metal salts such as magnesium salts and calcium salts; ammonium salts; aluminum salts; zinc salts. Examples of the organic amine salts include monoethanolamine salts, diethanolamine salts, and triethanolamine salts. Examples of the basic amino acid salts include arginine salts and lysine salts.

[0100] Examples of component (F11) include lauryl phosphate, sodium lauryl phosphate, disodium lauryl phosphate, diethanolamine lauryl phosphate, triethanolamine lauryl phosphate, potassium lauryl phosphate, cetyl phosphate, potassium cetyl phosphate, triethanolamine cetyl phosphate, and diethanolamine cetyl phosphate.

[0101] Commercially available products of component (F11) include those under the trade name "Hostene HLP" (manufactured by Nikko Chemicals Co., Ltd.) and those under the trade name "Hostaphat CC" (manufactured by Clariant Japan KK).

[0102] Component (F12) may be a polyoxyalkylene alkyl ether phosphate, a polyoxyalkylene alkyl ether phosphate, or both a polyoxyalkylene alkyl ether phosphate and a polyoxyalkylene alkyl ether phosphate.

[0103] The polyoxyalkylene alkyl ether phosphate is a phosphate ester of an ether (polyoxyalkylene alkyl ether) composed of a polyoxyalkylene residue and a monovalent saturated aliphatic alcohol residue. Examples of the oxyalkylene constituting the polyoxyalkylene residue in the polyoxyalkylene alkyl ether include oxyalkylenes having 2 to 4 carbon atoms, such as oxyethylene, oxypropylene, and oxybutylene. The polyoxyalkylene is preferably polyoxyethylene. The polyoxyalkylene may contain only one type of oxyalkylene, or may contain two or more types of oxyalkylenes.

[0104] The monovalent saturated aliphatic alcohol residue constituting the polyoxyalkylene alkyl ether contains a monovalent saturated aliphatic hydrocarbon group. Examples of the monovalent saturated aliphatic hydrocarbon group include saturated aliphatic hydrocarbon groups having 10 to 36 carbon atoms (preferably 12 to 18 carbon atoms), such as lauryl, cetyl, and stearyl. The monovalent saturated aliphatic hydrocarbon group is preferably linear.

[0105] The polyoxyalkylene alkyl ether phosphate may be a monoester, a diester, a triester, or a mixture of two or more of these.

[0106] Examples of the salt of the polyoxyalkylene alkyl ether phosphate include inorganic salts, organic amine salts, basic amino acid salts, etc. Examples of the inorganic salts, organic amine salts, and basic amino acid salts include the salts exemplified in the section for component (F11) above.

[0107] Examples of component (F12) include polyoxyalkylene cetearyl ether phosphates such as triceteareth-4 phosphate and triceteareth-5 phosphate; polyoxyalkylene alkyl (C12-15) ether phosphates such as di(C12-15) pareth-4 phosphate, di(C12-15) pareth-6 phosphate and di(C12-15) pareth-8 phosphate; and salts thereof.

[0108] Component (F) preferably contains a phosphate surfactant (at least one phosphate surfactant) selected from the group consisting of triceteareth-4 phosphate, triceteareth-5 phosphate, di(C12-15) pareth-4 phosphate, di(C12-15) pareth-6 phosphate, and salts thereof. Component (F1) preferably contains a phosphate surfactant (at least one phosphate surfactant) selected from the group consisting of triceteareth-4 phosphate, triceteareth-5 phosphate, di(C12-15) pareth-4 phosphate, di(C12-15) pareth-6 phosphate, and salts thereof.

[0109] The content of component (F1) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 0.7% by mass or more, and preferably 10.0% by mass or less, and more preferably 5.0% by mass or less. When the content of component (F1) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, emulsion stability can be further improved.

[0110] The content of component (F) in the water-in-oil emulsion cosmetic composition (100% by mass) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 0.7% by mass or more, and preferably 10.0% by mass or less, and more preferably 5.0% by mass or less. When the content of component (F) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, emulsion stability can be further improved.

[0111] (Component (G)) Component (G) is a powder. The water-in-oil emulsion cosmetic composition preferably contains component (G). By using component (G), it is possible to impart a matte texture with reduced shine to hair and to adjust the feel of use of the water-in-oil emulsion cosmetic composition. Only one type of component (G) may be used, or two or more types may be used in combination.

[0112] Examples of component (G) include clay minerals, silica (silicic anhydride), diatomaceous earth (diatomaceous earth), calcium carbonate, magnesium carbonate, aluminum oxide, barium sulfate, red iron oxide, yellow iron oxide, black iron oxide, chromium oxide, ultramarine, Prussian blue, carbon black, titanium oxide, titanium dioxide, zinc oxide, cellulose powder, and starch (such as octenylsuccinic acid corn starch ester metal salt).

[0113] The clay minerals may be natural or synthetic.

[0114] Examples of the clay minerals include kaolin group clay minerals, antigorite group clay minerals, pyrophyllite group clay minerals, mica group clay minerals, smectite group clay minerals, vermiculite group clay minerals, chlorite group clay minerals, and organically modified clay minerals.

[0115] Examples of the kaolin group clay minerals include kaolin, nacrite, dickite, and halloysite.

[0116] Examples of the antigorite group clay minerals include antigorite, amesite, and cronsteadite.

[0117] Examples of the pyrophyllite group clay minerals include pyrophyllite and talc.

[0118] Examples of the mica group clay minerals include illite, glauconite, celadonite, sericite, mica, muscovite, chrome muscovite, and biotite.

[0119] Examples of the smectite clay minerals include bentonite, montmorillonite, beidellite, nontonite, saponite, hectorite, and lucentite.

[0120] Examples of the vermiculite clay minerals include vermiculite.

[0121] Examples of the chlorite group clay minerals include chlorite.

[0122] The organically modified clay minerals include smectite clay minerals or vermiculite clay minerals that have been organically modified. Quaternary ammonium salt cationic surfactants are preferably used for the organic modification. Examples of the quaternary ammonium salt cationic surfactants include alkyltrimethylammonium chloride, dialkyldimethylammonium chloride, and benzalkonium chloride.

[0123] Component (G) preferably contains a powder (at least one powder) selected from the group consisting of kaolin, silica, diatomaceous earth, talc, and bentonite. In this case, the water-in-oil emulsion cosmetic composition tends to have hard properties.

[0124] In this specification, the above-mentioned "powder selected from the group consisting of kaolin, silica, diatomaceous earth, talc, and bentonite" may be referred to as "component (G1)."

[0125] Therefore, it is preferable that component (G) includes component (G1). The water-in-oil emulsion cosmetic composition preferably includes component (G1).

[0126] In 100% by mass of the water-in-oil emulsion cosmetic composition, the content of component (G1) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 0.7% by mass or more, and preferably 50.0% by mass or less, more preferably 40.0% by mass or less, even more preferably 30.0% by mass or less, even more preferably 20.0% by mass or less, even more preferably 10.0% by mass or less, and particularly preferably 5.0% by mass or less.

[0127] The content of component (G) in 100% by mass of the water-in-oil emulsion cosmetic composition is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and preferably 50.0% by mass or less, more preferably 40.0% by mass or less.

[0128] (Other Components) The water-in-oil emulsion cosmetic composition may contain other components in addition to the above-mentioned components (A) to (G). Examples of such other components include an oily component that is solid at 25°C and different from component (A), an oily component that is liquid at 25°C and different from component (B), a surfactant (anionic surfactant, cationic surfactant, nonionic surfactant, amphoteric surfactant, etc.) that is different from both components (C) and (F), a polyhydric alcohol, a thickener, a moisturizer, a disinfectant, a pearlizing agent, an anti-inflammatory agent, a cooling agent, a pH adjuster, a fragrance, an ultraviolet absorber, an antioxidant, a sequestering agent (chelating agent), a film-forming polymer, a colorant, a pigment, a vitamin, an amino acid, an astringent, a whitening agent, an animal or plant extract, an acid, an alkali, etc. One or more of the above other components may be used alone, or two or more may be used.

[0129] <Oil component that is solid at 25°C, different from component (A)> The water-in-oil emulsion cosmetic composition preferably contains an oil component that is solid at 25°C, different from component (A) (hereinafter, may be referred to as oil component (X) that is solid at 25°C). The oil component (X) that is solid at 25°C is an oil component that is solid at 25°C and has a melting point of less than 65°C or more than 100°C. The oil component (X) that is solid at 25°C is preferably an oil component that is solid at 25°C and has a melting point of less than 65°C.

[0130] Examples of the oil component (X) that is solid at 25°C include petrolatum, stearyl alcohol, shea butter, mango butter, astrocaryum murumuru seed butter, and beeswax.

[0131] <Oil component that is liquid at 25°C different from component (B)> The water-in-oil emulsion cosmetic composition preferably contains an oil component that is liquid at 25°C different from component (B) (hereinafter, may be referred to as oil component (X) that is liquid at 25°C). Oil component (X) that is liquid at 25°C is an oil component that is liquid at 25°C and is different from both vegetable oils and fatty acid triglycerides.

[0132] Examples of the oil component (X) that is liquid at 25°C include hydrocarbon oils, silicone oils, and ester oils.

[0133] Examples of the hydrocarbon oil (liquid hydrocarbon oil at 25°C) include α-olefin oligomer, squalane (synthetic squalane, vegetable squalane), squalene, liquid isoparaffin, liquid paraffin (mineral oil), (C13-15) alkane, hydrogenated polyisobutene, hydrogenated polydecene, light isoparaffin (isododecane), light liquid isoparaffin, and liquid isoparaffin.

[0134] Examples of the silicone oil (liquid silicone oil at 25°C) include methylpolysiloxane, methylphenylsiloxane, highly polymerized methylpolysiloxane, poly(oxyethylene-oxypropylene)methylpolysiloxane copolymer, cyclopentasiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyoxyethylene-methylpolysiloxane copolymer, aminoethylaminopropylmethylsiloxane-dimethylpolysiloxane copolymer, and dimethiconol.

[0135] Examples of the ester oil (an ester oil that is liquid at 25°C) include isononyl isononanoate, isopropyl myristate, ethylhexyl palmitate (octyl palmitate), cetyl ethylhexanoate, isodecyl isononanoate, hexyl laurate, isoamyl laurate, diisobutyl adipate, ethylhexyl isononanoate (octyl isononanoate), isodecyl isononanoate, octyldodecyl myristate, diethylhexyl succinate, octyldodecyl oleate, octyldodecyl isostearate, diisostearyl malate, diethylhexyl sebacate, pentaerythritol tetra-2-ethylhexanoate, pentaerythrityl tetraoctanoate, and pentaerythrityl tetraisostearate.

[0136] <Hydrophilic surfactant with an HLB value exceeding 12.0> From the viewpoint of further enhancing the emulsion stability of the water-in-oil type, it is preferable that the water-in-oil emulsion cosmetic composition contain a small amount of a hydrophilic surfactant with an HLB value exceeding 12.0 (hereinafter, sometimes referred to as hydrophilic surfactant (X)). The water-in-oil emulsion cosmetic composition preferably does not contain a hydrophilic surfactant (X) or contains it in an amount of 3.0% by mass or less. When the water-in-oil emulsion cosmetic composition contains a hydrophilic surfactant (X), the content of the hydrophilic surfactant (X) is preferably 3.0% by mass or less, more preferably 2.0% by mass or less, and even more preferably 1.0% by mass or less, based on 100% by mass of the water-in-oil emulsion cosmetic composition. In particular, when the content of the hydrophilic surfactant (X) in the water-in-oil emulsion cosmetic composition is greater than the content of surfactants with an HLB value of 12.0 or less, the water-in-oil emulsion composition may not be able to maintain its integrity.

[0137] (Other Details of the Water-in-Oil Emulsion Cosmetic Composition) The method for producing the water-in-oil emulsion cosmetic composition is not particularly limited, and any known method for producing a water-in-oil emulsion cosmetic composition can be used. Examples of methods for producing the water-in-oil emulsion cosmetic composition include a method in which the components are mixed and emulsified while being heated to obtain a mixture, and then the mixture is cooled and solidified. Examples of methods for mixing the components include a method using a stirring device such as a disper mixer or a paddle mixer.

[0138] The water-in-oil emulsion cosmetic composition can be used, for example, in a form filled in a container. Examples of the container include a tube container, a dispenser container (pump container), a jar container, and a propelling container. The container is preferably a jar container.

[0139] The use of the water-in-oil emulsion cosmetic composition is not particularly limited. Examples of uses of the water-in-oil emulsion cosmetic composition include hair cosmetics such as hair styling agents and after-bath treatment agents; and skin cosmetics such as moisturizing cosmetics (for hands, body, face, scalp, etc.). The water-in-oil emulsion cosmetic composition is, for example, a hair cosmetic composition or a skin cosmetic composition.

[0140] The water-in-oil emulsion cosmetic composition is preferably a hair cosmetic composition, since it has the property of improving hair manageability. Furthermore, the water-in-oil emulsion cosmetic composition may be a skin cosmetic composition, since it has the property of imparting a moisturizing feel to the skin. Furthermore, the water-in-oil emulsion cosmetic composition may be a cosmetic composition that can be used in combination as both a hair cosmetic and a skin cosmetic. As described above, the water-in-oil emulsion cosmetic composition can be applied to hair as a hair cosmetic, and can also be applied to the skin for the purpose of moisturizing, etc.

[0141] The properties of the water-in-oil emulsion cosmetic composition are not particularly limited. The properties of the water-in-oil emulsion cosmetic composition may be gel-like, balm-like, clay-like, solid, or other properties. The properties of the water-in-oil emulsion cosmetic composition are preferably balm-like or clay-like. The water-in-oil emulsion cosmetic composition is preferably a balm-like water-in-oil emulsion cosmetic composition (so-called hair balm), and is also preferably a clay-like water-in-oil emulsion cosmetic composition (so-called hair clay).

[0142] The following will particularly describe the preferred differences between the balm-type water-in-oil emulsion cosmetic composition and the clay-type water-in-oil emulsion cosmetic composition.

[0143] <Balm-like water-in-oil emulsion cosmetic composition (hair balm)> The content of component (B1) in 100% by mass of the water-in-oil emulsion cosmetic composition (balm-like water-in-oil emulsion cosmetic composition) is preferably 0.3% by mass or more, more preferably 1.0% by mass or more, even more preferably 2.0% by mass or more, and preferably 15.0% by mass or less, more preferably 10.0% by mass or less. When the content of component (B1) is equal to or greater than the above lower limit and equal to or less than the above upper limit, spreadability can be improved. In addition, hair manageability can be improved.

[0144] The content of component (B2) in 100% by mass of the water-in-oil emulsion cosmetic composition (balm-like water-in-oil emulsion cosmetic composition) is preferably 5.0% by mass or more, more preferably 10.0% by mass or more, even more preferably 15.0% by mass or more, and preferably 50.0% by mass or less, more preferably 40.0% by mass or less. When the content of component (B2) is equal to or greater than the above lower limit and equal to or less than the above upper limit, the spreadability can be further improved. In addition, the manageability of hair can be further improved.

[0145] The content of component (B) in 100% by mass of the water-in-oil emulsion cosmetic composition (balm-like water-in-oil emulsion cosmetic composition) is preferably 5.0% by mass or more, more preferably 10.0% by mass or more, even more preferably 15.0% by mass or more, and preferably 50.0% by mass or less, more preferably 40.0% by mass or less. When the content of component (B) is equal to or greater than the above lower limit and equal to or less than the above upper limit, the spreadability can be further improved. In addition, the manageability of hair can be further improved.

[0146] In 100% by mass of the water-in-oil emulsion cosmetic composition (balm-like water-in-oil emulsion cosmetic composition), the content of component (B) and oily components other than component (B) that are liquid at 25°C and are selected from the group consisting of ester oils, hydrocarbon oils, and silicone oils is preferably 15.0% by mass or more, more preferably 30.0% by mass or more, even more preferably 35.0% by mass or more, preferably 70.0% by mass or less, and more preferably 60.0% by mass or less. When the content of the oily components that are liquid at 25°C is equal to or greater than the above lower limit and equal to or less than the above upper limit, spreadability can be further improved. Furthermore, hair manageability can be further improved. The above-mentioned "oily component which is liquid at 25°C and is selected from the group consisting of component (B), ester oils other than component (B), hydrocarbon oils, and silicone oils" is, in other words, "an oily component which is liquid at 25°C and is selected from the group consisting of vegetable oils, fatty acid triglycerides, ester oils other than vegetable oils, ester oils other than fatty acid triglycerides, hydrocarbon oils, and silicone oils."

[0147] <Clay-like water-in-oil emulsion cosmetic composition (hair clay)> The content of component (B1) in 100% by mass of the water-in-oil emulsion cosmetic composition (clay-like water-in-oil emulsion cosmetic composition) is preferably 0.3% by mass or more, more preferably 1.0% by mass or more, and preferably 20.0% by mass or less, more preferably 15.0% by mass or less. When the content of component (B1) is equal to or greater than the above lower limit and equal to or less than the above upper limit, spreadability can be improved. In addition, hair manageability can be improved.

[0148] The content of component (B2) in 100% by mass of the water-in-oil emulsion cosmetic composition (clay-like water-in-oil emulsion cosmetic composition) is preferably 1.0% by mass or more, more preferably 2.0% by mass or more, and preferably 30.0% by mass or less, more preferably 20.0% by mass or less. When the content of component (B2) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the spreadability can be further improved. In addition, the manageability of hair can be further improved.

[0149] The content of component (B) in 100% by mass of the water-in-oil emulsion cosmetic composition (clay-like water-in-oil emulsion cosmetic composition) is preferably 3.0% by mass or more, more preferably 5.0% by mass or more, and preferably 30.0% by mass or less, more preferably 25.0% by mass or less. When the content of component (B) is equal to or greater than the above lower limit and equal to or less than the above upper limit, the spreadability can be further improved. In addition, the manageability of hair can be further improved.

[0150]

[0033] In 100% by mass of the water-in-oil emulsion cosmetic composition (clay-like water-in-oil emulsion cosmetic composition), the content of the oily component that is liquid at 25°C selected from the group consisting of component (B), ester oils other than component (B), hydrocarbon oils, and silicone oils is preferably 5.0% by mass or more, more preferably 10.0% by mass or more, preferably 30.0% by mass or less, and more preferably 25.0% by mass or less. When the content of the oily component that is liquid at 25°C is equal to or greater than the above lower limit and equal to or less than the above upper limit, the spreadability can be further improved. In addition, the manageability of hair can be further improved. The above-mentioned "oily component that is liquid at 25°C selected from the group consisting of component (B), ester oils other than component (B), hydrocarbon oils, and silicone oils" can be rephrased as "oily component that is liquid at 25°C selected from the group consisting of vegetable oils, fatty acid triglycerides, ester oils other than vegetable oils, ester oils other than fatty acid triglycerides, hydrocarbon oils, and silicone oils."

[0151] The water-in-oil emulsion cosmetic composition (clay-like water-in-oil emulsion cosmetic composition) preferably contains component (G). By using component (G), the properties of the water-in-oil emulsion cosmetic composition can be made hard. From the perspective of imparting a matte (matte) texture to the water-in-oil emulsion cosmetic composition in addition to the effect of making the properties of the water-in-oil emulsion cosmetic composition hard, component (G) preferably contains component (G1). Therefore, the water-in-oil emulsion cosmetic composition (clay-like water-in-oil emulsion cosmetic composition) preferably contains component (G1).

[0152] The content of component (G) in 100% by mass of the water-in-oil emulsion cosmetic composition (clay-like water-in-oil emulsion cosmetic composition) is preferably 5.0% by mass or more, more preferably 10.0% by mass or more, and preferably 50.0% by mass or less, and more preferably 40.0% by mass or less. When the content of component (G) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the properties of the water-in-oil emulsion cosmetic composition can be made hard.

[0153] The content of component (G1) in 100% by mass of the water-in-oil emulsion cosmetic composition (clay-like water-in-oil emulsion cosmetic composition) is preferably 5.0% by mass or more, more preferably 10.0% by mass or more, and preferably 50.0% by mass or less, and more preferably 40.0% by mass or less. When the content of component (G1) is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the properties of the water-in-oil emulsion cosmetic composition can be made hard.

[0154] The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

[0155] In the examples and comparative examples, the following components were used.

[0156] (Component (A)) Carnauba wax (melting point: 88°C) Sunflower seed wax (melting point: 78°C) Rice bran wax (melting point: 78°C) Candelilla wax (melting point: 70°C) Microcrystalline wax 1 ("HI-MIC1090" manufactured by Nippon Seiro Co., Ltd., melting point: 88°C) Microcrystalline wax 2 ("MULTIWAX W-835" manufactured by Sonneborn, melting point: 76°C) Paraffin wax 1 (melting point: 73°C)

[0157] (Component (B)) Glyceryl tri-2-ethylhexanoate, caprylic / capric triglyceride, castor oil, crambe abyssinica seed oil, argan oil, jojoba oil

[0158] (Component (C)) Sorbitan stearate (HLB value: 4.5) Glyceryl behenate (HLB value: 3.4) Polyoxyethylene (5E.O.) behenyl ether (HLB value: 7.0) Glyceryl stearate (HLB value: 3.0)

[0159] (Component (D)) Purified water

[0160] (Component (E)) Polyglyceryl-5 polyricinoleate Polyglyceryl-6 polyricinoleate Polyglyceryl-3 polyricinoleate

[0161] (Component (F)) Triceteareth-4 phosphate (HLB value: 10.0 to 11.0)

[0162] (Component (G)) Kaolin Silica

[0163] (Other ingredients) Dioleth-8 phosphate sodium (HLB value: 12.5) PEG-250 distearate (HLB value: 19.2) Mineral oil (liquid at 25°C) Hydrogenated polyisobutene (liquid at 25°C) Isononyl isononanoate (liquid at 25°C) Isopropyl myristate (liquid at 25°C) Polyglyceryl-6 octastearate (liquid at 25°C) Petrolatum (solid at 25°C) Paraffin wax 2 (melting point: 53°C) Stearyl alcohol (solid at 25°C) Beeswax (solid at 25°C) Shea butter (solid at 25°C) Triisostearin POE (20) Glyceryl (HLB value: 8.0) Ceteth-40 (HLB value: 20.0) Glycerin (polyhydric alcohol) Dipropylene glycol (polyhydric alcohol)

[0164] (Examples 1 to 17 and Comparative Examples 1 to 5) The ingredients shown in Tables 1 to 5 below were blended (blending units are mass %), and the ingredients were mixed and emulsified while heating to prepare mixed liquids. 50 g of the resulting mixed liquid was poured into a jar (cylindrical, bottom diameter 45 mm, height 45 mm). After pouring, the mixed liquid was allowed to stand for 24 hours to cool and solidify, thereby preparing a water-in-oil emulsion cosmetic composition. The blend amounts in the tables (amount blended out of 100% by mass of the water-in-oil emulsion cosmetic composition) are shown as the pure blend amount (unit: mass %).

[0165] The water-in-oil emulsion cosmetic compositions prepared in Examples 1 to 10 were balm-like water-in-oil emulsion cosmetic compositions (hair balms), and the water-in-oil emulsion cosmetic compositions prepared in Examples 11 to 17 were clay-like water-in-oil emulsion cosmetic compositions (hair clays). The water-in-oil emulsion cosmetic composition prepared in Comparative Example 1 was a cosmetic composition with properties different from either a balm or a clay. In Comparative Examples 2 and 3, the compositions could not be emulsified, and therefore further evaluations were not performed. Furthermore, in Comparative Examples 4 and 5, the compositions could not be emulsified into water-in-oil emulsions, and instead oil-in-water emulsion cosmetic compositions were obtained, and therefore evaluations other than those of Test Example 3 were not performed.

[0166] (Comparative Example 1: Oil-based cosmetic composition (hair balm)) The ingredients shown in Table 6 below were blended (blending units are mass %) and heated and mixed to prepare a mixed liquid. 50 g of the resulting mixed liquid was poured into a jar (cylindrical, bottom diameter 45 mm, height 45 mm). After pouring, the mixed liquid was allowed to stand for 24 hours to cool and solidify, thereby preparing an oil-based cosmetic composition (hair balm). The blend amounts in the table (blending amounts relative to 100% by mass of the oil-based cosmetic composition) are shown as the blend amounts of pure components (unit: mass %).

[0167] (Comparative Example 2: Oil-based cosmetic composition (hair clay)) The ingredients shown in Table 6 below were blended (blending units are mass %) and heated and mixed to prepare a mixed liquid. 50 g of the resulting mixed liquid was poured into a jar container (cylindrical, bottom diameter 45 mm, height 45 mm). After pouring, the mixed liquid was allowed to stand for 24 hours to cool and solidify, thereby preparing an oil-based cosmetic composition (hair clay). The blend amounts in the table (blending amounts relative to 100% by mass of the oil-based cosmetic composition) are shown as the blend amounts of the pure components (unit: mass %).

[0168] (Evaluation) The obtained water-in-oil emulsion cosmetic compositions and oil-based cosmetic compositions were evaluated as follows: Evaluations of Test Examples 1 to 4 were carried out by a panel of three experts, who discussed and decided the evaluation results.

[0169] (Test Example 1: Spreadability) The obtained water-in-oil emulsion cosmetic compositions were evaluated for their good spreadability compared to oil-based cosmetic compositions having the same properties. That is, the water-in-oil emulsion cosmetic compositions (hair balms) prepared in Examples 1 to 10 were compared with the oil-based cosmetic composition (hair balm) prepared in Comparative Example 1. In addition, the water-in-oil emulsion cosmetic compositions (hair clays) prepared in Examples 11 to 17 were compared with the oil-based cosmetic composition (hair clay) prepared in Comparative Example 2. The water-in-oil emulsion cosmetic composition prepared in Comparative Example 1 was compared with the oil-based cosmetic composition (hair balm) prepared in Comparative Example 1.

[0170] Approximately 1 g of the obtained cosmetic composition was placed in the palm of the hand, and the palms were rubbed together to spread it on the palms. The ease of spreading was evaluated according to the following criteria.

[0171] <Evaluation criteria for spreadability> ◯ (Good): Spreadability is clearly better than the comparative example. × (Poor): Spreadability is only slightly better than the comparative example or is equal to or worse than the comparative example.

[0172] (Test Example 2: Hair manageability) Approximately 1 g of the obtained water-in-oil emulsion cosmetic composition was placed in the palm of the hand, spread on the palm, and then applied to a loosely wavy medium-length hair wig (manufactured by Eucalyptus Japan Co., Ltd.) by gripping the hair, followed by styling (wavy hairstyle). Three hours after styling, the wig hair was visually observed, and the manageability of the hair was evaluated according to the following criteria.

[0173] <Evaluation criteria for hair manageability> ○ (Good): Wavy hairstyle is maintained × (Poor): Hair is untidy or loses its waves, and the hairstyle is not maintained

[0174] (Test Example 3: Stickiness) The wigs were touched with their hands immediately after styling in Test Example 2. As a result, the wigs that had been styled using the water-in-oil emulsion cosmetic compositions obtained in the Examples did not feel sticky. On the other hand, when the wigs that had been styled in the same manner as Test Example 2 using the oil-in-water emulsion cosmetic compositions obtained in Comparative Examples 4 and 5 were touched with their hands, they felt sticky.

[0175] (Test Example 4: Moisturizing Feeling) After styling the hair in Test Example 2, the water-in-oil emulsion cosmetic composition remaining on the palm was spread over the back of the hand. When the water-in-oil emulsion cosmetic composition obtained in the example was applied, a moist and good moisturizing feel was felt.

[0176] The compositions and results are shown in Tables 1 to 6 below.

[0177]

[0178]

[0179]

[0180]

[0181]

[0182]

[0183] Formulation examples of the water-in-oil emulsion cosmetic composition of the present invention are shown below.

[0184] (Formulation Example 1: Hair Balm) Carnauba wax 2.0% by mass Rice bran wax 1.0% by mass Microcrystalline wax (melting point: 88°C) 3.0% by mass Glyceryl tri-2-ethylhexanoate 20.0% by mass Castor oil 3.0% by mass Argan oil 2.0% by mass Glyceryl behenate 1.5% by mass Polyglyceryl-5 polyricinoleate 2.0% by mass Mineral oil Balance Hydrogenated polyisobutene 3.0% by mass Stearyl alcohol 1.0% by mass Polyglyceryl-6 octastearate 1.5% by mass Triceteareth-4 phosphate 1.5% by mass PEG-250 distearate 0.1% by mass Fragrance Appropriate amount Glycerin 3.0% by mass Tocopheryl acetate 0.5% by mass Phenoxyethanol 0.8% by mass 1,2-Pentanediol 0.8% by mass Water 30.0% by mass Total 100.0% by mass

[0185] (Formulation Example 2: Hair Balm) Sunflower seed wax 3.0% by mass Microcrystalline wax (melting point: 88°C) 3.0% by mass Paraffin wax (melting point: 73°C) 3.0% by mass Paraffin wax (melting point: 53°C) 6.0% by mass Caprylic / capric triglyceride 20.0% by mass Castor oil 4.0% by mass Crambe abyssinica seed oil 1.0% by mass Argan oil 1.0% by mass Glyceryl behenate 1.0% by mass Polyoxyethylene (5E.O.) behenyl ether 1.0% by mass Polyglyceryl-6 polyricinoleate 2.0% by mass Mineral oil Balance Polyglyceryl-6 octastearate 1.5% by mass Triceteareth-4 phosphate 1.5% by mass PEG-250 distearate 0.1% by mass Triisostearin POE (20) glyceryl 3.0% by mass Fragrance Appropriate amount Glycerin 3.0% by mass Phenoxyethanol 0.8% by mass 1,2-octanediol 0.5% by mass Hydrolyzed keratin 0.5% by mass Water 32.0% by mass Total 100.0% by mass

[0186] (Formulation Example 3: Skin protection balm) Microcrystalline wax (melting point: 88°C) 3.0% by mass Paraffin wax (melting point: 73°C) 2.0% by mass Paraffin wax (melting point: 53°C) 6.0% by mass Caprylic / capric triglyceride 15.0% by mass Jojoba oil 5.0% by mass Avocado oil 5.0% by mass Crambe abyssinica seed oil 3.0% by mass Glyceryl behenate 1.0% by mass Sorbitan stearate 1.0% by mass Polyoxyethylene (5 E.O.) behenyl ether 1.0% by mass Polyglyceryl-6 polyricinoleate 2.0% by mass Mineral oil Balance PEG-250 distearate 0.1% by mass Glycerin 3.0% by mass Phenoxyethanol 0.5% by mass 1,2-octanediol 0.5% by mass Hydrolyzed hyaluronic acid 0.5% by mass Water 35.0% by mass Total 100.0% by mass

[0187] (Formulation Example 4: Hair Clay) Carnauba wax 2.0% by mass Rice bran wax 1.0% by mass Microcrystalline wax (melting point: 88°C) 5.0% by mass Paraffin wax (melting point: 73°C) 3.0% by mass Glyceryl tri-2-ethylhexanoate 8.0% by mass Castor oil 4.0% by mass Sorbitan stearate 2.0% by mass Polyglyceryl-5 polyricinoleate 2.0% by mass Mineral oil Balance Triceteareth-4 phosphate 1.5% by mass PEG-250 distearate 0.3% by mass Kaolin 20.0% by mass Mica 5.0% by mass Dipropylene glycol 3.0% by mass Tocopheryl acetate 0.5% by mass Phenoxyethanol 0.8% by mass 1,2-pentanediol 0.8% by mass Fragrance Appropriate amount Water 30.0% by mass Total 100.0% by mass

[0188] (Formulation Example 5: Hair Clay) Carnauba wax 2.0% by mass Rice bran wax 1.0% by mass Microcrystalline wax (melting point: 88°C) 5.0% by mass Glyceryl tri-2-ethylhexanoate 8.0% by mass Castor oil 4.0% by mass Glyceryl stearate 3.0% by mass Polyglyceryl-3 polyricinoleate 2.0% by mass Mineral oil Balance Triceteareth-4 phosphate 1.0% by mass POE (20) glyceryl triisostearate 3.0% by mass PEG-250 distearate 0.5% by mass Kaolin 20.0% by mass Silica 3.0% by mass Bentonite 2.0% by mass Medicinal charcoal 0.5% by mass Dipropylene glycol 3.0% by mass Tocopheryl acetate 0.5% by mass Phenoxyethanol 0.8% by mass 1,2-Pentanediol 0.8% by mass Fragrance Appropriate amount Water 30.0% by mass Total 100.0% by mass

Claims

1. A water-in-oil emulsion cosmetic composition comprising the following components A, B, C, and D, wherein the content of component D is 15.0% by mass or more and 50.0% by mass or less. Component A: An oily component that is solid at 25°C and has a melting point of 65°C or higher and 100°C or lower, selected from the group consisting of animal and vegetable oils and hydrocarbon oils. Component B: An oily component that is liquid at 25°C and selected from the group consisting of vegetable oils and fatty acid triglycerides. Component C: A nonionic surfactant that has a linear saturated alkyl chain with 13 or more carbon atoms and an HLB value of 2.8 or higher and 8.0 or lower. Component D: Water.

2. The water-in-oil emulsion cosmetic composition according to claim 1, comprising the following component E: Component E: polyglyceryl polyricinoleate.

3. The water-in-oil emulsion cosmetic composition according to claim 1 or 2, comprising the following component F: Component F: a phosphate surfactant having an HLB value of more than 8.0 and not more than 12.

0.

4. The water-in-oil emulsion cosmetic composition according to claim 1 or 2, wherein the content of the oily component that is liquid at 25°C and is selected from the group consisting of component B and ester oils, hydrocarbon oils, and silicone oils other than component B is 15.0% by mass or more and 70.0% by mass or less.

5. The water-in-oil emulsion cosmetic composition according to claim 1 or 2, comprising the following component G, wherein the content of said component B and an oily component other than said component B that is liquid at 25°C and is selected from the group consisting of ester oil, hydrocarbon oil, and silicone oil is 5.0% by mass or more and 25.0% by mass or less. Component G: Powder 6. The water-in-oil emulsion cosmetic composition according to claim 1 or 2, which is a hair cosmetic composition.