Emulsified hair cosmetic composition and method for treating hair

Abstract

Provided is an emulsified hair cosmetic composition which has excellent finger-passing properties for the hair during application and after heat treatment, and which has excellent gathering properties and persistence for the hair after heat treatment. This emulsified hair cosmetic composition contains levulinic acid (component A), a cationic surfactant (component B), a C8-24 aliphatic alcohol (component C), a silicone compound (component D), and water (component E).

Description

Technical Field

[0001] The present invention relates to an emulsified hair cosmetic composition and also to a method for treating hair using the emulsified hair cosmetic composition. Background Art

[0002] As an example of an emulsified hair cosmetic composition, a hair treatment is known. Hair treatments include hair treatments for use in the bathroom that are rinsed off and hair treatments for use outside the bathroom that are not rinsed off. As hair treatments, emulsified hair cosmetic compositions such as emulsion-like hair treatments (so-called hair lotions) and cream-like hair treatments (so-called hair masks) are widely used. As the above-mentioned emulsified hair cosmetic composition, a composition containing a cationic surfactant is known (for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application No. 2004-509860 Summary of the invention

[0006] Problems to be solved by the invention

[0007] Emulsified hair cosmetic compositions such as hair lotions and hair masks are usually used in the following steps. (1) Apply the emulsified hair cosmetic composition to the hair. (2) Rinse the emulsified hair cosmetic composition applied to the hair. (3) Heat-treat the hair using a heat appliance such as a hair dryer or a hair curler. It should be noted that the step (2) may not be performed.

[0008] The emulsified hair cosmetic composition is required to have good finger-passability during application and after heat treatment. In particular, if the finger-passability of heat-treated hair is good, a dry feeling is imparted to the hair.

[0009] Furthermore, the emulsified hair cosmetic composition is required to have not only the above-mentioned properties but also good controllability of the hair after heat treatment. It is particularly preferred that the controllability of the hair after heat treatment lasts for a long time.

[0010] Conventional emulsified hair cosmetic compositions can improve the finger-feeling and manageability of heat-treated hair to a certain extent. However, conventional emulsified hair cosmetic compositions have difficulty in maintaining the manageability of heat-treated hair for a long period of time.

[0011] An object of the present invention is to provide an emulsified hair cosmetic composition which has excellent finger-feeling properties when applied and after heat treatment, and excellent controllability and durability of the heat-treated hair. Another object of the present invention is to provide a method for treating hair using the emulsified hair cosmetic composition.

[0012] Means for solving problems

[0013] The present invention provides an emulsified hair cosmetic composition comprising the following component (A), the following component (B), the following component (C), the following component (D), and the following component (E).

[0014] Ingredient (A): Levulinic Acid

[0015] Ingredient (B): Cationic surfactant

[0016] Component (C): Aliphatic alcohol having 8 to 24 carbon atoms

[0017] Ingredient (D): Silicone compound

[0018] Ingredients (E): Water

[0019] The emulsified hair cosmetic composition of the present invention preferably contains the following component (F).

[0020] Ingredients (F): Ester oil

[0021] In the emulsified hair cosmetic composition of the present invention, the component (D) preferably contains the following component (D1) and / or the following component (D2).

[0022] Component (D1): Silicone oil having a viscosity of 10,000 mPa·s or more at 25°C

[0023] Component (D2): amino-modified silicone with a viscosity of less than 10,000 mPa·s at 25°C

[0024] The emulsified hair cosmetic composition of the present invention preferably contains the following component (G).

[0025] Component (G): A polymer having a structure represented by the following formula (G):

[0026] [Chemistry 1]

[0027]

[0028] In the above formula (G), R1 and R2 each independently represent a linear or branched aliphatic hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, and * represents a bonding position.

[0029] In the emulsified hair cosmetic composition of the present invention, the component (B) preferably contains the following component (B1).

[0030] Component (B1): a compound represented by the following formula (B1)

[0031] R 1 -C(=O)-NH-C3H6-N + (CH3)3X - (B1)

[0032] In the above formula (B1), R 1 represents a linear or branched aliphatic hydrocarbon group having 11 to 21 carbon atoms, X - Cl - or Br - .

[0033] The emulsified hair cosmetic composition of the present invention preferably contains the following component (H).

[0034] Ingredient (H): Nonionic surfactant

[0035] In the emulsified hair cosmetic composition of the present invention, the component (H) preferably contains the following component (H1).

[0036] Component (H1): polyglycerol fatty acid ester in which 2 to 6 fatty acids form an ester bond with polyglycerol and the average number of moles of glycerol added is 4 to 12

[0037] The emulsified hair cosmetic composition of the present invention preferably contains the following component (I).

[0038] Ingredient (I): Cationic polymer

[0039] The pH of the emulsified hair cosmetic composition of the present invention is preferably 7.0 or less.

[0040] The emulsified hair cosmetic composition of the present invention is preferably applied to the hair and then used by heat-treating the hair at a heat treatment temperature of 90° C. or higher.

[0041] The present invention provides a hair treatment method, which sequentially comprises: an application step of applying the emulsified hair cosmetic composition to hair; and a heat treatment step of heating the hair at a heat treatment temperature of 90° C. or higher.

[0042] The hair treatment method of the present invention preferably comprises a washing step of rinsing the emulsified hair cosmetic composition applied to the hair between the applying step and the heat treatment step.

[0043] Effects of the Invention

[0044] The emulsified hair cosmetic composition of the present invention comprises the specific component (A), the specific component (B), the specific component (C), the specific component (D) and the specific component (E), and therefore has excellent finger-feeling properties during application and after heat treatment of hair, and has excellent controllability and durability of hair after heat treatment. DETAILED DESCRIPTION

[0045] Hereinafter, the present invention will be described in detail.

[0046] The emulsified hair cosmetic composition of the present invention contains levulinic acid, a cationic surfactant, an aliphatic alcohol having 8 to 24 carbon atoms, a silicone compound and water.

[0047] In this specification, the above-mentioned "levulinic acid" may be referred to as "component (A)".

[0048] In this specification, the above-mentioned "cationic surfactant" may be referred to as "component (B)".

[0049] In this specification, the above-mentioned "aliphatic alcohol having 8 to 24 carbon atoms" may be referred to as "component (C)".

[0050] In this specification, the above-mentioned "silicone compound" may be referred to as "component (D)".

[0051] In this specification, the above-mentioned "water" may be referred to as "component (E)".

[0052] Therefore, the emulsified hair cosmetic composition of the present invention comprises component (A), component (B), component (C), component (D) and component (E).

[0053] Since the emulsified hair cosmetic composition of the present invention has the above-mentioned constitution, it is excellent in finger-feeling property of the hair during application and after heat treatment, and is excellent in controllability and sustainability of the hair after heat treatment.

[0054] The emulsified hair cosmetic composition of the present invention may contain ester oil.

[0055] In this specification, the above-mentioned "ester oil" may be referred to as "component (F)".

[0056] The emulsified hair cosmetic composition of the present invention may contain a polymer having a structure represented by the following formula (G).

[0057] [Chemistry 2]

[0058]

[0059] In the above formula (G), R1 and R2 each independently represent a linear or branched aliphatic hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, and * represents a bonding position.

[0060] In this specification, the above-mentioned "polymer having a structure represented by formula (G)" may be referred to as "component (G)".

[0061] The emulsified hair cosmetic composition of the present invention may contain a nonionic surfactant.

[0062] In this specification, the above-mentioned "nonionic surfactant" may be referred to as "component (H)".

[0063] The emulsified hair cosmetic composition of the present invention may contain a cationized polymer.

[0064] In this specification, the above-mentioned "cationized polymer" may be referred to as "component (I)".

[0065] The emulsified hair cosmetic composition of the present invention may contain other components in addition to the components (A) to (I).

[0066] The above-mentioned components, such as component (B), component (C), component (D), component (F), component (G), component (H), component (I), and other components, may be used alone or in combination of two or more.

[0067] It should be noted that, in the present specification, the content of each component contained in the emulsified hair cosmetic composition refers to the total content of all the components contained in the emulsified hair cosmetic composition. For example, the content of component (B) refers to the total content of all components (B) in the emulsified hair cosmetic composition.

[0068] Hereinafter, the details of each component used in the emulsified hair cosmetic composition of the present invention will be described.

[0069] (ingredient (A))

[0070] Component (A) is levulinic acid. By using component (A), the finger-feeling and manageability of heat-treated hair can be improved. In particular, by using component (A) and component (D) together, a dry feeling can be imparted to hair at a high level. In addition, by using component (A), the sustainability of the manageability of heat-treated hair can be improved. Furthermore, the sustainability of the finger-feeling of heat-treated hair can also be improved. In addition, by using component (A), even when the emulsified hair cosmetic composition is applied to dyed hair, the hair is less likely to fade.

[0071] The content of the component (A) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.3% by mass or more, more preferably 1.0% by mass or more, and even more preferably 2.0% by mass or more, and is preferably 15.0% by mass or less, more preferably 10.0% by mass or less, and even more preferably 7.0% by mass or less. When the content of the component (A) is at least the above lower limit and at most the above upper limit, the finger-feeling property, manageability, and durability of the hair after the heat treatment can be further improved.

[0072] (Component (B))

[0073] Component (B) is a cationic surfactant. By using component (B), the finger passability of hair during application can be improved, and the stability of the properties of the emulsified hair cosmetic composition (emulsification stability) can be improved. In particular, although a composition containing component (A) without containing component (B) tends to have a reduced feel during application, in the present invention, component (A) and component (B) can be combined to make the composition a cationic emulsified system, thereby improving the feel during application and the feeling during use. Component (B) may be used alone or in combination of two or more.

[0074] Examples of the component (B) include monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, monoalkyl ether quaternary ammonium salts, alkylamines, and fatty acid amide amines.

[0075] Examples of the monoalkyl quaternary ammonium salts include lauryltrimethylammonium chloride, myristyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, alkyl (16,18)trimethylammonium chloride, alkyl (20-22)trimethylammonium chloride, stearyldimethylbenzylammonium chloride, myristyldimethylbenzylammonium chloride, tri(polyoxyethylene)stearylammonium chloride, and di(polyoxyethylene)oleylmethylammonium chloride.

[0076] Examples of the fatty acid amide amines include myristic acid dimethylaminoethyl amide, myristic acid dimethylaminopropyl amide, myristic acid diethylaminoethyl amide, myristic acid diethylaminopropyl amide, palmitic acid dimethylaminoethyl amide, palmitic acid dimethylaminopropyl amide, palmitic acid diethylaminoethyl amide, palmitic acid diethylaminopropyl amide, stearic acid dimethylaminoethyl amide, stearic acid dimethylaminopropyl amide, stearic acid diethylaminoethyl amide, stearic acid diethylaminopropyl amide, stearic acid dipropylaminoethyl amide, stearic acid dipropylaminopropyl amide, behenic acid dimethylaminoethyl amide, behenic acid dimethylaminopropyl amide, behenic acid diethylaminoethyl amide, and behenic acid diethylaminopropyl amide.

[0077] In addition, as the component (B), there can also be mentioned a compound represented by the following formula (B1).

[0078] R 1 -C(=O)-NH-C3H6-N + (CH3)3X - (B1)

[0079] In the above formula (B1), R 1 represents a linear or branched aliphatic hydrocarbon group having 11 to 21 carbon atoms, X - Cl - or Br - .

[0080] As R in the above formula (B1) 1 The aliphatic hydrocarbon group in the formula (B1) may be an alkyl group, an alkenyl group, an alkynyl group, or the like. The aliphatic hydrocarbon group preferably has 13 to 21 carbon atoms. In order to further improve the finger-passability of the hair during application, R in the formula (B1) 1 It preferably represents a linear or branched alkyl group, preferably represents a linear aliphatic hydrocarbon group, and more preferably represents a linear alkyl group.

[0081] X in the above formula (B1) - It is the counter anion of the quaternary ammonium cation.

[0082] In this specification, the above-mentioned "compound represented by formula (B1)" may be referred to as "component (B1)".

[0083] As component (B1), palmitamidopropyltrimethylammonium chloride (INCI name: PalmitamidopropyltrimoniumChloride) etc. are mentioned, for example.

[0084] Examples of commercially available products containing the component (B1) include "VARISOFT PATC" (trade name) (manufactured by Evonik Japan Co., Ltd.).

[0085] Component (B) preferably contains component (B1). In this case, the finger-passability of the hair during application can be further improved. In addition, the stability of the properties can be further improved.

[0086] When the emulsified hair cosmetic composition of the present invention contains component (G), component (B) particularly preferably contains component (B1). When component (G) is contained, the stability of properties can be improved by using component (B1).

[0087] From the viewpoint of further improving the stability of properties, the component (B) preferably contains a monoalkyl quaternary ammonium salt.

[0088] In this specification, the above-mentioned "monoalkyl quaternary ammonium salt" may be referred to as "component (B2)".

[0089] Therefore, component (B) preferably contains component (B2).

[0090] From the viewpoint of further improving the stability of properties, the component (B) preferably contains the component (B1) and the component (B2).

[0091] The component (B2) is, for example, a compound represented by the following formula (B2).

[0092] R 1 -N + (CH3)3X - (B2)

[0093] In the above formula (B2), R 1 represents a linear or branched aliphatic hydrocarbon group having 12 to 22 carbon atoms. The aliphatic hydrocarbon group preferably has 16 to 22 carbon atoms. Examples of the aliphatic hydrocarbon group include an alkyl group, an alkenyl group, and an alkynyl group. In order to further improve the coating properties, R in the formula (B2) 1 A linear or branched alkyl group is preferred, and a linear alkyl group is more preferred.

[0094] In the above formula (B2), X - is the counter anion of the quaternary ammonium cation, indicating Cl - or Br - .

[0095] Examples of the component (B2) represented by the formula (B2) include stearyl trimethyl ammonium chloride (octadecyl trimethyl ammonium chloride, INCI name: Steartrimonium Chloride), stearyl trimethyl ammonium bromide (octadecyl trimethyl ammonium bromide), alkyl trimethyl ammonium chloride (behenyl trimethyl ammonium chloride, INCI name: Behentrimonium Chloride), hexadecyl trimethyl ammonium chloride (cetrimonium chloride), and hexadecyl trimethyl ammonium bromide (cetrimonium bromide).

[0096] Examples of commercially available products containing the component (B2) represented by the formula (B2) include "VARISOFT 300", "VARISOFT 85 Pellets" (each manufactured by Evonik Japan), "ARQUAD 18-50" (manufactured by AkzoNobel), "CTAC 30KC" (manufactured by KCI), "NIKKOLCA-2250E" (manufactured by Nikkol Chemicals), "GENAMIN KDMP" (manufactured by Clariant), and "Quartamin 86W" (manufactured by Kao Corporation).

[0097] In 100% by mass of the emulsified hair cosmetic composition of the present invention, the content of the component (B1) is preferably 0.05% by mass or more, more preferably 0.3% by mass or more, and even more preferably 1.0% by mass or more, and is preferably 7.0% by mass or less, more preferably 5.0% by mass or less, and even more preferably 3.0% by mass or less. When the content of the component (B1) is at least the above lower limit and at most the above upper limit, the finger-passability of the hair during application can be further improved, and the stability of the properties can be further improved.

[0098] The content of the component (B2) in 100% by mass of the emulsified hair cosmetic composition of the present invention is not particularly limited, and may be 0.05% by mass or more, 0.3% by mass or more, 1.0% by mass or more, 10.0% by mass or less, 7.0% by mass or less, or 5.0% by mass or less. When the content of the component (B2) is at least the above lower limit and at most the above upper limit, the finger-passability of the hair during application can be further improved, and the stability of the properties can be further improved.

[0099] In 100% by mass of the emulsified hair cosmetic composition of the present invention, the content of the component (B) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and even more preferably 1.0% by mass or more, and is preferably 10.0% by mass or less, more preferably 7.0% by mass or less, and even more preferably 5.0% by mass or less. When the content of the component (B) is at least the above lower limit and at most the above upper limit, the finger-passability of the hair during application can be further improved, and the stability of the properties can be further improved.

[0100] (ingredient (C))

[0101] Component (C) is an aliphatic alcohol having 8 to 24 carbon atoms. Component (C) is a so-called higher alcohol. By using component (C), the stability of the properties of the emulsified hair cosmetic composition can be improved. Component (C) may be used alone or in combination of two or more.

[0102] From the viewpoint of further improving the stability of properties, the component (C) is preferably an aliphatic alcohol having 12 to 24 carbon atoms.

[0103] Examples of the component (C) include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetearyl alcohol, isostearyl alcohol, hexyldecanol, 2-octyldodecanol, oleyl alcohol, decyltetradecyl alcohol, and behenyl alcohol.

[0104] From the viewpoint of further improving the stability of properties, component (C) is preferably an aliphatic alcohol (at least one aliphatic alcohol) selected from the group consisting of stearyl alcohol, cetyl alcohol and behenyl alcohol, more preferably contains stearyl alcohol, and even more preferably contains stearyl alcohol.

[0105] In 100% by mass of the emulsified hair cosmetic composition of the present invention, the content of the component (C) is preferably 0.3% by mass or more, more preferably 1.0% by mass or more, and even more preferably 5.0% by mass or more, and is preferably 20.0% by mass or less, more preferably 15.0% by mass or less, and even more preferably 13.0% by mass or less. When the content of the component (C) is not less than the above lower limit and not more than the above upper limit, the stability of the properties can be further improved.

[0106] (ingredient (D))

[0107] Component (D) is a silicone compound. Component (D) is preferably silicone oil as an oily component. By using component (D), the finger passability of hair during application and after heat treatment can be improved. Component (D) can be used alone or in combination of two or more.

[0108] Component (D) includes: dimethyl silicone oils such as methyl polysiloxane (polydimethylsiloxane) and high-polymer methyl polysiloxane; methylphenyl silicone oils such as methylphenyl polysiloxane; cyclic silicone oils such as methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane; amino-modified silicones such as aminopropyl methylsiloxane·dimethylsiloxane copolymers, aminoethylaminopropyl methylsiloxane·dimethylsiloxane copolymers and aminoethylaminopropyl methylsiloxane·dimethylsiloxane copolymers, carboxyl-modified silicones, fatty acid-modified silicones, alcohol-modified silicones, aliphatic alcohol-modified silicones, epoxy-modified silicones, fluorine-modified silicones and alkyl-modified silicones; methyl hydrogenpolysiloxane, polydimethylsiloxanol, etc.

[0109] Component (D) preferably contains a silicone oil having a viscosity of 10,000 mPa·s or more at 25°C and / or an amino-modified silicone having a viscosity of less than 10,000 mPa·s at 25°C.

[0110] In this specification, the above-mentioned "silicone oil having a viscosity of 10,000 mPa·s or more at 25°C" is sometimes referred to as "component (D1)", and the above-mentioned "amino-modified silicone having a viscosity of less than 10,000 mPa·s at 25°C" is sometimes referred to as "component (D2)". Component (D1) is a high polymer silicone. It should be noted that component (D1) includes amino-modified silicone having a viscosity of 10,000 mPa·s or more at 25°C.

[0111] Therefore, component (D) preferably contains component (D1) and / or component (D2). In this case, component (D) may contain component (D1), may contain component (D2), or may contain component (D1) and component (D2).

[0112] When the emulsified hair cosmetic composition of the present invention contains component (D1), the finger-feeling property of the hair during application and after heat treatment can be further improved. When the emulsified hair cosmetic composition of the present invention contains component (D2), the soft feeling of the hair during application and after heat treatment can be improved.

[0113] Component (D) preferably contains component (D1) and component (D2). In this case, the finger-feeling property of the hair after the heat treatment can be further improved, and the soft feeling of the hair during application and after the heat treatment can be improved.

[0114] The viscosity of component (D1) at 25° C. is 10,000 mPa·s or more, preferably 60,000 mPa·s or more, more preferably 80,000 mPa·s or more, and preferably 30,000,000 mPa·s or less. When the viscosity is at least the above lower limit and at most the above upper limit, the finger-passability of the hair during application can be further improved.

[0115] The content of the component (D1) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and is preferably 10.0% by mass or less, more preferably 5.0% by mass or less. When the content of the component (D1) is at least the above lower limit and at most the above upper limit, the finger-feeling property of the hair during application and after heat treatment can be further improved.

[0116] The content of the component (D2) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and is preferably 10.0% by mass or less, more preferably 5.0% by mass or less. When the content of the component (D2) is at least the above lower limit and at most the above upper limit, the finger-feeling property and softness of the hair during application and after heat treatment can be further improved.

[0117] The content of the component (D) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 1.0% by mass or more, more preferably 3.0% by mass or more, and preferably 30.0% by mass or less, more preferably 20.0% by mass or less. When the content of the component (D) is at least the above lower limit and at most the above upper limit, the finger-feeling property of the hair during application and after heat treatment can be further improved.

[0118] (Ingredient (E))

[0119] Component (E) is water. Component (E) is preferably purified water.

[0120] The content of the component (E) in the emulsified hair cosmetic composition of the present invention can be appropriately adjusted by adjusting the contents of other components. The content of the component (E) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 30.0% by mass or more, more preferably 40.0% by mass or more, and even more preferably 45.0% by mass or more, and is preferably 90.0% by mass or less, more preferably 85.0% by mass or less, and even more preferably 80.0% by mass or less.

[0121] (ingredient (F))

[0122] Component (F) is an ester oil. The emulsified hair cosmetic composition of the present invention preferably contains component (F). By using component (F), the stability of the properties (emulsification stability) of the emulsified hair cosmetic composition can be further improved. In particular, by using component (F), the dispersibility of component (D) is improved, and the stability of the properties can be further improved.

[0123] Examples of the component (F) include hexadecyl octanoate, ethyl oleate, isopropyl myristate, isopropyl palmitate, myristyl myristate, hexadecyl palmitate, 2-ethylhexyl palmitate, octyldodecyl myristate, isopropyl isostearate, propylene glycol isostearate, hexadecyl 2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, tri(caprylic acid / capric acid)glyceryl, isononyl isononanoate, diisopropyl adipate, pentaerythritol tetraoctanoate, pentaerythritol tetraisostearate. Ester, diisostearyl malate, triethylhexanoin, 2-ethylhexyl hydroxystearate, dipentaerythrityl hexa(hydroxystearate / stearic acid / rosin acid) ester, dipentaerythrityl tetra(hydroxystearate / isostearate), pentaerythrityl hexahydroxystearate, (ethylhexanoic acid / stearic acid / adipic acid) glyceryl, tri(caprylic acid / capric acid / myristic acid / stearic acid) glyceryl, dipentaerythrityl hexa(behenic acid / benzoic acid / ethylhexanoic acid) ester and alkyl benzoate (C12-15), etc.

[0124] In addition, as component (F), dimer acid esters such as di(isostearyl alcohol / phytosterol) dimer linoleate, dimer linoleyl dimer linoleate, (phytosterol / isostearyl alcohol / cetyl alcohol / stearyl alcohol / behenyl alcohol) dimer linoleate, hydrogenated castor oil dimer linoleate, and diglyceryl isostearate dimer linoleate may also be mentioned. In addition, as component (F), dimer glycol esters such as dimer linoleic acid hydrogenated rosin condensate and dimer linoleyl diisostearate may also be mentioned.

[0125] From the viewpoint of further improving the manageability of the heat-treated hair, the component (F) preferably contains a dimer acid ester and / or a dimer diol ester.

[0126] In this specification, the above-mentioned "dimer acid ester and / or dimer diol ester" may be referred to as "component (F1)".

[0127] Therefore, it is preferred that the component (F) contains the component (F1). In this case, the component (F) may contain a dimer acid ester, may contain a dimer diol ester, or may contain a dimer acid ester and a dimer diol ester.

[0128] The content of the component (F1) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 10.0% by mass or less, more preferably 5.0% by mass or less. When the content of the component (F1) is at least the above lower limit and at most the above upper limit, the manageability of the hair after the heat treatment can be further improved, and the stability of the properties can be further improved.

[0129] The content of the component (F) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and is preferably 20.0% by mass or less, more preferably 10.0% by mass or less. When the content of the component (F) is at least the above lower limit and at most the above upper limit, the stability of the properties can be further improved.

[0130] (ingredient (G))

[0131] Component (G) is a polymer having a structure represented by the following formula (G). The emulsified hair cosmetic composition of the present invention preferably contains component (G). By using component (G), the finger-feeling property of the hair after heat treatment can be made quite good. Therefore, a dry feeling is imparted to the hair at a high level. Component (G) may be used alone or in combination of two or more.

[0132] [Chemistry 3]

[0133]

[0134] In the above formula (G), R1 and R2 each independently represent a linear or branched aliphatic hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, and * represents a bonding position. In the above formula (G), R1 and R2 each independently represent preferably a hydrogen atom or an ethyl group. In the above formula (G), it is more preferred that at least one of R1 and R2 is a hydrogen atom, and it is further preferred that R1 is a hydrogen atom or an ethyl group, and R2 is a hydrogen atom.

[0135] Component (G) is preferably a polymer having a repeating structural unit including a structure represented by the above formula (G), and more preferably a polymer having a structural unit represented by the following formula (G1).

[0136] [Chemistry 4]

[0137]

[0138] In the above formula (G1), R1 and R2 each independently represent a linear or branched aliphatic hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, and R3 represents a group having 1 to 5 carbon atoms. The preferred structure of R1 and R2 in the above formula (G1) is the same as the preferred structure of R1 and R2 in the above formula (G). In the above formula (G1), R3 may be linear or branched. The number of carbon atoms of R3 in the above formula (G1) is preferably 2 or more, more preferably 3 or more, and preferably 4 or less.

[0139] As component (G), (methyl vinyl ether / maleic acid) copolymer (INCI name: PVM / MACopolymer) and polyimide-1 (INCI name: Polyimide-1) can be mentioned. As a commercial product of polyimide-1, for example, the trade name "AQUAFLEX XL-30" (manufactured by Ashland) can be mentioned. As a commercial product of (methyl vinyl ether / maleic acid) copolymer, for example, the trade name "GANTREZ S-97", the trade name "GANTREZ AN-119", and the trade name "GANTREZ AN-169" (all manufactured by Ashland) can be mentioned. In addition, as a commercial product of a mixture of polyimide-1 and (methyl vinyl ether / maleic acid) copolymer, for example, the trade name "Styleze XT3" (manufactured by Ashland) can be mentioned.

[0140] The content of the component (G) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more, and is preferably 2.0% by mass or less, more preferably 1.0% by mass or less, and even more preferably 0.5% by mass or less. When the content of the component (G) is at least the above lower limit and at most the above upper limit, the finger-feeling property of the hair after the heat treatment can be further improved.

[0141] (Component (H))

[0142] Component (H) is a nonionic surfactant. The emulsified hair cosmetic composition of the present invention preferably contains component (H). By using component (H), the stability of the properties (emulsification stability) of the emulsified hair cosmetic composition can be further improved. Component (H) may be used alone or in combination of two or more.

[0143] Examples of the component (H) include sorbitan fatty acid esters, glycerin fatty acid esters, and alkylene oxide adducts thereof, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenols, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkylphenyl formaldehyde condensates, polyoxyethylene sterols and derivatives thereof, polyoxyethylene lanolin and derivatives thereof, polyoxyethylene beeswax derivatives, sugar esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene castor oil.

[0144] Examples of the sorbitan fatty acid esters include sorbitan monooleate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monopalmitate, sorbitan monolaurate, sorbitan trioleate, sorbitan tristearate, sorbitan sesquistearate, sorbitan sesquioleate, sorbitan sesquiisostearate, and coconut oil fatty acid sorbitan.

[0145] Examples of the alkylene oxide adducts of the sorbitan fatty acid esters include polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monoisostearate, polyoxyethylene sorbitan monococonut oil fatty acid, polyoxyethylene sorbitan tristearate, and polyoxyethylene sorbitan trioleate.

[0146] The above-mentioned glycerol fatty acid ester may be a monoglycerol fatty acid ester or a polyglycerol fatty acid ester.

[0147] Examples of the monoglyceryl fatty acid esters include monocaprylic acid glyceryl, monocapric acid glyceryl, monolauric acid glyceryl, monomyristic acid glyceryl, monopalmitic acid glyceryl, monostearic acid glyceryl, monoisostearic acid glyceryl, monobehenic acid glyceryl, monooleic acid glyceryl, monoerucic acid glyceryl, sesquioleic acid glyceryl, distearic acid glyceryl, diisostearic acid glyceryl, and diarachidic acid glyceryl.

[0148] Examples of the polyglycerol fatty acid esters include diglyceryl monocaprylate, decaglyceryl monocaprylate, hexaglyceryl monocaprate, tetraglyceryl monolaurate, hexaglyceryl monolaurate, decaglyceryl monolaurate, poly (4-10) glyceryl monolaurate, decaglyceryl monomyristicate, decaglyceryl monostearate, decaglyceryl monoisostearate, poly (2-10) glyceryl monostearate, diglyceryl monooleate, hexaglyceryl monooleate, diglyceryl sesquioleate, poly (2-10) diisostearate, poly (6-10) distearate, diglyceryl triisostearate, and poly (10) tristearate.

[0149] Examples of the alkylene oxide adducts of the glycerol fatty acid esters include polyoxyethylene glyceryl monostearate and polyoxyethylene glyceryl monooleate.

[0150] Examples of the polyoxyalkylene alkyl ethers include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene polyoxypropylene lauryl ether, polyoxypropylene cetyl ether, polyoxypropylene isocetyl ether, polyoxypropylene stearyl ether, and polyoxypropylene oleyl ether.

[0151] Examples of the polyoxyalkylene fatty acid esters include polyethylene glycol fatty acid esters such as polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol distearate, and polyethylene glycol monolaurate; and propylene glycol fatty acid esters such as propylene glycol monostearate, propylene glycol monolaurate, and propylene glycol monooleate.

[0152] From the viewpoint of further improving the coating properties of the emulsified hair cosmetic composition, component (H) preferably contains a polyglycerol fatty acid ester in which 2 to 6 fatty acids form ester bonds with polyglycerol and the average number of moles of glycerol added is 4 to 12.

[0153] In this specification, the above-mentioned "polyglycerol fatty acid ester in which 2 to 6 fatty acids form ester bonds with polyglycerol and the average number of moles of glycerol added is 4 to 12" may be referred to as "component (H1)".

[0154] Therefore, the component (H) preferably contains the component (H1).

[0155] Examples of the component (H1) include polyglycerol difatty acid esters, polyglycerol trifatty acid esters, polyglycerol tetrafatty acid esters, polyglycerol pentafatty acid esters, and polyglycerol hexafatty acid esters.

[0156] Component (H1) is preferably a polyglyceryl fatty acid ester (at least one type of polyglyceryl fatty acid ester) selected from the group consisting of polyglyceryl difatty acid esters and polyglyceryl trifatty acid esters.

[0157] The average number of moles of glycerol added to the polyglycerol portion of component (H1) is preferably 5 to 10.

[0158] Examples of the fatty acid in component (H1) include linear or branched saturated or unsaturated fatty acids having 10 to 22 carbon atoms. The carbon number is preferably 12 to 18. Examples of the fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, and oleic acid. The fatty acid is preferably stearic acid.

[0159] More specifically, component (H1) includes polyglyceryl-10 distearate, polyglyceryl-10 diisostearate, polyglyceryl-5 dioleate, polyglyceryl-10 dioleate, polyglyceryl-10 dimyristate, polyglyceryl-10 trilaurate, polyglyceryl-5 trimyristate, polyglyceryl-5 trioleate, polyglyceryl-10 pentastearate, polyglyceryl-10 pentaoleate and polyglyceryl-5 hexastearate.

[0160] Component (H1) is preferably a polyglyceryl fatty acid ester (at least one polyglyceryl fatty acid ester) selected from the group consisting of polyglyceryl-10 distearate, polyglyceryl-10 diisostearate, polyglyceryl-10 pentastearate, polyglyceryl-5 trioleate, polyglyceryl-10 trilaurate and polyglyceryl-10 dioleate, and more preferably polyglyceryl-10 distearate.

[0161] The content of the component (H1) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.3% by mass or more, and is preferably 10.0% by mass or less, more preferably 5.0% by mass or less, and even more preferably 2.0% by mass or less. When the content of the component (H1) is at least the above lower limit and at most the above upper limit, the coating properties of the emulsified hair cosmetic composition can be further improved.

[0162] The content of the component (H) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.3% by mass or more, and is preferably 10.0% by mass or less, more preferably 5.0% by mass or less, and even more preferably 2.0% by mass or less. When the content of the component (H) is not less than the above lower limit and not more than the above upper limit, the coating properties of the emulsified hair cosmetic composition can be further improved.

[0163] (ingredient (I))

[0164] Component (I) is a cationic polymer. The emulsified hair cosmetic composition of the present invention preferably contains component (I). By using component (I), the finger-feeling and softness of hair during rinsing and after heat treatment can be improved. Component (I) may be used alone or in combination of two or more.

[0165] Examples of component (I) include cationized cellulose; cationized guar gum such as O-[2-hydroxy-3-(trimethylammonio)propyl]guar gum chloride; cationized starch; diallyl quaternary ammonium salt polymer; diallyl quaternary ammonium salt / acrylamide copolymer; quaternized polyvinyl pyrrolidone derivative; polyglycol polyamine condensate; adipic acid·dimethylaminohydroxypropylethylenetriamine copolymer; and cationized dextran, etc.

[0166] From the viewpoint of further improving the finger-feel and softness of hair during rinsing and after heat treatment, component (I) preferably contains cationized cellulose, and more preferably cationized cellulose.

[0167] In this specification, the above-mentioned "cationized cellulose" may be referred to as "component (I1)".

[0168] Therefore, the component (I) preferably contains the component (I1), and is preferably the component (I1).

[0169] The component (I1) is more preferably a cationized cellulose having an alkyl group. The alkyl group preferably has 10 or more carbon atoms, preferably 24 or less, and more preferably 22 or less carbon atoms.

[0170] Component (I1) is preferably polyquaternium-67. In this case, the finger-feeling and softness of the hair during rinsing and after heat treatment can be further improved. The polyquaternium-67 is a polymer of a quaternary ammonium salt obtained by addition reaction of trimethylammonium-substituted epoxide and lauryldimethylammonium-substituted epoxide with hydroxyethylcellulose, and is a cationized hydroxyethylcellulose derivative.

[0171] The content of the component (I1) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and is preferably 1.0% by mass or less, more preferably 0.7% by mass or less. When the content of the component (I1) is at least the above lower limit and at most the above upper limit, the finger-feeling property and the soft feeling of the hair during rinsing and after heat treatment can be further improved.

[0172] The content of the component (I) in 100% by mass of the emulsified hair cosmetic composition of the present invention is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and is preferably 1.0% by mass or less, more preferably 0.7% by mass or less. When the content of the component (I) is at least the above lower limit and at most the above upper limit, the finger-feeling property and the soft feeling of the hair during rinsing and after heat treatment can be further improved.

[0173] (Vegetable Oil)

[0174] The emulsified hair cosmetic composition of the present invention preferably contains a vegetable oil. By using the vegetable oil, the manageability of the hair after the heat treatment can be further improved. The vegetable oils may be used alone or in combination of two or more.

[0175] Examples of the vegetable oil include macadamia oil, eucalyptus oil, coconut oil, avocado oil, safflower oil, olive oil, palm oil, palm kernel oil, macadamia nut oil, shea butter, cocoa butter, almond oil, sunflower oil, rosehip oil, olive squalane, camellia oil, kiwi seed oil, camellia oil, almond oil, sesame oil, soybean oil, jojoba oil, castor oil, hazelnut oil, meadowfoam seed oil, peppermint oil, argan oil, carrot oil, lavender oil, sugar squalane, Camellia oleifera seed oil, and Astragalus mume seed butter.

[0176] In 100% by mass of the emulsified hair cosmetic composition of the present invention, the content of the vegetable oil is preferably 0.05% by mass or more, more preferably 0.2% by mass or more, and is preferably 10.0% by mass or less, more preferably 5.0% by mass or less. When the content of the vegetable oil is at least the above lower limit and at most the above upper limit, the manageability of the hair after the heat treatment can be further improved.

[0177] (Other ingredients)

[0178] The emulsified hair cosmetic composition of the present invention may contain other components other than the above-mentioned components (A) to (I) and the vegetable oil. The above-mentioned other components are not particularly limited, and examples thereof include hydrocarbon oils; lower alcohols such as ethanol; polyols; anionic surfactants; amphoteric surfactants; moisturizers; bactericides; pearlescent agents; anti-inflammatory agents such as glycyrrhizic acid and its salts; cooling agents such as menthol; pH adjusters such as phosphoric acid and its salts, citric acid and its salts, lactic acid and its salts, sodium hydroxide, triethanolamine, etc.; fragrances; ultraviolet absorbers; antioxidants; chelating agents; film-forming polymer compounds such as polyvinyl pyrrolidone; powders such as kaolin, silica, and talc; pigments; pigments; vitamins; amino acids; astringents; whitening agents; animal and plant extracts; acids; bases, etc. The above-mentioned other components may be used alone or in combination of two or more.

[0179] <Hydrocarbon Oil>

[0180] Examples of the hydrocarbon oil include α-olefin oligomers, light isoparaffins, light liquid isoparaffins, squalane, synthetic squalane, vegetable squalane, liquid isoparaffins, and liquid paraffin.

[0181] (Other details of the emulsified hair cosmetic composition)

[0182] The emulsified hair cosmetic composition of the present invention is preferably an oil-in-water (O / W) type emulsified hair cosmetic composition.

[0183] The pH of the emulsified hair cosmetic composition of the present invention is preferably 2.0 or more, more preferably 2.5 or more, and preferably 7.0 or less, more preferably 5.0 or less. When the pH is at least the above lower limit and at most the above upper limit, the effects of the present invention can be more effectively exhibited.

[0184] The emulsified hair cosmetic composition of the present invention is a hair cosmetic composition for hair. Examples of the emulsified hair cosmetic composition of the present invention include hair treatment creams, hair dressing compositions, hair dye compositions, and hair cleansing compositions. Since the effects of the present invention can be particularly effectively exerted, the emulsified hair cosmetic composition of the present invention is preferably a hair treatment cream. Examples of the hair treatment cream include a hair treatment cream for use in the bathroom after application and then rinsed off, and a hair treatment cream for use outside the bathroom without being rinsed off after application.

[0185] The emulsified hair cosmetic composition of the present invention is preferably applied to the hair and then rinsed off. The emulsified hair cosmetic composition of the present invention is more preferably applied to the hair and then rinsed off.

[0186] The emulsified hair cosmetic composition of the present invention is preferably applied to the hair and then heat-treated at a heat treatment temperature of 90°C or higher. The emulsified hair cosmetic composition of the present invention may be applied to the hair and then rinsed off and then heat-treated at a heat treatment temperature of 90°C or higher. From the viewpoint of allowing the components in the emulsified hair cosmetic composition to penetrate into the hair more effectively, the heat treatment temperature is preferably 110°C or higher, more preferably 150°C or higher. From the viewpoint of suppressing hair damage caused by heat, the heat treatment temperature is preferably 250°C or lower, more preferably 230°C or lower. As a method for heating the hair, there can be mentioned a method using a heating device such as a hair dryer and a hair curler. A hair curler may be used after the hair dryer.

[0187] As the method for producing the emulsified hair cosmetic composition of the present invention, a known method for producing an emulsified hair cosmetic composition can be adopted. As the method for producing the emulsified hair cosmetic composition of the present invention, for example, a method of mixing and emulsifying the components can be cited. A homomixer, a dispersing mixer, etc. are used for mixing and emulsification. Emulsification may be phase inversion emulsification. Emulsification may be performed after mixing the above-mentioned components, or may be performed while mixing the components.

[0188] (Hair treatment method)

[0189] The hair treatment method of the present invention comprises, in order: an application step of applying the emulsified hair cosmetic composition to the hair; and a heat treatment step of heating the hair at a heat treatment temperature of 90° C. or higher. The hair treatment method of the present invention may comprise, between the application step and the heat treatment step, a washing step of washing the emulsified hair cosmetic composition applied to the hair.

[0190] In the application step, the emulsified hair cosmetic composition is preferably left to stand for 1 minute to 60 minutes (preferably 2 minutes to 30 minutes) after being applied to the hair.

[0191] In the washing step, the emulsified hair cosmetic composition applied to the hair is preferably washed off with water.

[0192] The heat treatment temperature in the heat treatment step is preferably 110° C. or higher, more preferably 150° C. or higher, and preferably 250° C. or lower, more preferably 230° C. or lower. When the heat treatment temperature is at least the lower limit, the components in the emulsified hair cosmetic composition can be more effectively permeated into the hair. When the heat treatment temperature is at most the upper limit, hair damage due to heat can be suppressed.

[0193] As a method for heating the hair in the above-mentioned heat treatment step, there is mentioned a method of using a heating device such as a hair dryer and a hair iron.

[0194] The heat treatment process may include: a first heat treatment process of heating the hair with a hair dryer; and a second heat treatment process of heating the hair with a hair iron. In this case, in at least one of the first and second heat treatment processes, the heat treatment temperature of the hair is equal to or higher than the above lower limit. It should be noted that, usually, the heat treatment temperature of the hair in the second heat treatment process is higher than the heat treatment temperature of the hair in the first heat treatment process.

[0195] Example

[0196] Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the following Examples.

[0197] The main components used in Examples and Comparative Examples are as follows.

[0198] (ingredient (A))

[0199] Levulinic acid

[0200] (Component (B))

[0201] Ingredients (B1):

[0202] Palmitamidopropyltrimethylammonium chloride: Trade name "VARISOFT PATC", manufactured by Evonik Japan

[0203] Ingredients (B2):

[0204] Behenyltrimethylammonium chloride: Trade name "GENAMIN KDMP", manufactured by Clariant, dimethyltrimethylammonium chloride

[0205] Stearyltrimethylammonium chloride: Trade name "Quartamin 86W", manufactured by Kao Corporation, stearic acid dimethyltrimethylammonium chloride

[0206] (ingredient (D))

[0207] Ingredients (D1):

[0208] Highly polymerized dimethyl polysiloxane: trade name "DOWSIL BY11-026", manufactured by Dow-Toray

[0209] Ingredients (D2):

[0210] Amino-modified silicone: Trade name "BELSIL ADM 1650", manufactured by Asahi Kasei Wacker Co., Ltd.

[0211] Ingredients (D) other than ingredient (D1) and ingredient (D2):

[0212] Dimethylpolysiloxane (5mPa·s): Viscosity at 25°C: 5mPa·s

[0213] Dimethylpolysiloxane (20 mPa·s): Viscosity at 25°C: 20 mPa·s

[0214] Dimethylpolysiloxane (350 mPa·s): Viscosity at 25°C: 350 mPa·s

[0215] (ingredient (G))

[0216] Polyimide-1: Trade name "AQUAFLEX XL-30", manufactured by Ashland

[0217] (Methyl vinyl ether / maleic acid) copolymer: trade name "GANTREZ S-97", manufactured by Ashland

[0218] (ingredient (I))

[0219] Polyquaternium-67: Trade name "SoftCAT Polymer SL-30", manufactured by The Dow Chemical Company

[0220] Polyquaternium-10: Trade name "CATINAL HC-200", manufactured by Toho Chemical Industry Co., Ltd.

[0221] (Examples 1 to 21 and Comparative Examples 1 to 5)

[0222] The ingredients shown in Tables 1 to 5 below (the blending unit is mass %) were blended to prepare emulsified hair cosmetic compositions. The blending amounts in the tables (the blending amounts in 100 mass % of the emulsified hair cosmetic composition) are expressed as pure component amounts (unit: mass %). The pH of the emulsified hair cosmetic compositions obtained in Examples 1 to 16 and 19 to 21 was in the range of 2.0 to 5.0. The pH of the emulsified hair cosmetic compositions obtained in Examples 17 and 18 was in the range of 6.0 to 7.0. The emulsified hair cosmetic compositions obtained in Examples 1 to 16, 19 to 21 and Comparative Examples 1 to 4 were in the form of creams, and the emulsified hair cosmetic compositions obtained in Examples 17, 18 and Comparative Example 5 were in the form of emulsions.

[0223] (evaluate)

[0224] The obtained emulsified hair cosmetic composition was evaluated as follows. The evaluation results are shown in the table. The evaluation was performed by three professional panelists.

[0225] (Test Example 1: Stability of properties (emulsification stability))

[0226] The obtained emulsified hair cosmetic composition was stored at 40° C. for 24 hours after preparation. The properties of the emulsified hair cosmetic composition after storage were visually observed and evaluated according to the following criteria.

[0227] <Evaluation Criteria for Stability of Properties>

[0228] ○ (good): The properties of the uniform emulsion were maintained.

[0229] × (bad): Separation or emulsification occurs, and the properties are uneven.

[0230] In addition, since the results of the stability of properties of the emulsified hair cosmetic compositions obtained in Comparative Examples 2 and 4 were poor, the subsequent evaluation was not performed.

[0231] [Evaluation of Examples 1 to 16, 19 to 21 and Comparative Examples 1 and 3 (creamy emulsified hair cosmetic composition)]

[0232] (Test Example 2A: Finger-passability of hair during application)

[0233] A hair bundle (human hair, length 30 cm, weight 10 g) was fully wetted with water at 40°C, and then passed through a comb three times. The hair bundle was held by hand to remove the water. About 10 g of the emulsified hair cosmetic composition was evenly applied to the hair bundle by hand combing. The finger passability (the magnitude of the resistance caused by the friction of wet hair: the weight feeling of finger passing) when the emulsified hair cosmetic composition was applied was evaluated and judged according to the following criteria.

[0234] <Evaluation Criteria for Finger-Passability of Hair During Application>

[0235] ○ (good): The resistance due to friction (the feeling of weight when a finger passes through) is hardly felt.

[0236] × (bad): The resistance due to friction (feeling of weight when a finger passes through) is clearly felt.

[0237] (Test Example 3A: Finger-passability of heat-treated hair and grooming properties of heat-treated hair)

[0238] The hair bundle evaluated in the above Test Example 2A was washed with running water at 40°C for 1 minute to rinse the emulsified hair cosmetic composition. The washed hair bundle was dried with a towel and then dried with a hair dryer. Next, a hair iron (set temperature: 180°C) was passed through the hair bundle from the top to the bottom twice to heat-treat the hair bundle. The hair bundle after the heat treatment was visually observed, and the manageability of the hair after the heat treatment was determined according to the following criteria. In addition, the finger combability (the magnitude of the resistance caused by catching) of the hair bundle after the heat treatment was evaluated when it was passed through a hand comb, and the finger combability of the hair after the heat treatment was determined according to the following criteria.

[0239] <Evaluation Criteria for Finger-Passability of Heat-treated Hair>

[0240] ○ (good): The resistance caused by the hook (the feeling of the finger being hooked) is hardly felt.

[0241] × (bad): The resistance caused by the hook (the feeling of the finger being hooked) is clearly felt.

[0242] <Evaluation Criteria for Groomability of Heat-treated Hair>

[0243] ○ (good): The hair bundle does not spread downward from the upper side, and the hair bundle is gathered as a whole.

[0244] × (bad): The hair bundle spreads significantly from the upper side to the lower side.

[0245] (Test Example 4A: Sustainability of finger-passability of heat-treated hair and sustainability of controllability of heat-treated hair)

[0246] The hair bundle evaluated in the "finger passability of heat-treated hair" and "groomability of heat-treated hair" of the above Test Example 3A was left to stand for 5 hours under the conditions of a temperature of 35°C and a humidity of 80% RH, and then further left to stand for 30 minutes under a room temperature environment (25°C). The hair bundle after standing was visually observed, and the sustainability of the groomability of the heat-treated hair was determined according to the following criteria. In addition, the finger passability (the magnitude of the resistance caused by catching) of the hair bundle after standing was evaluated when it was passed through a hand comb, and the sustainability of the finger passability of the heat-treated hair was determined according to the following criteria.

[0247] <Evaluation Criteria for Sustainability of Finger-Passability of Heat-treated Hair>

[0248] ○ (good): The resistance caused by the hook (the feeling of the finger being hooked) is hardly felt.

[0249] × (bad): The resistance caused by the hook (the feeling of the finger being hooked) is clearly felt.

[0250] <Evaluation Criteria for Sustainability of Hair Grooming after Heat Treatment>

[0251] ○ (good): The hair bundle does not spread downward from the upper side, and the hair bundle is gathered as a whole.

[0252] × (bad): The hair bundle spreads significantly from the upper side to the lower side.

[0253] [Evaluation of Examples 17 and 18 and Comparative Example 5 (emulsified hair cosmetic composition in emulsion form)]

[0254] (Test Example 2B: Finger-passability of hair during application)

[0255] About 0.7 g of the emulsified hair cosmetic composition was evenly applied to a hair bundle (human hair, length 30 cm, weight 10 g) by hand combing. The finger passability (the magnitude of the resistance feeling caused by friction: the friction feeling with the hair) when the emulsified hair cosmetic composition was applied was evaluated according to the following criteria.

[0256] <Evaluation Criteria for Finger-Passability of Hair During Application>

[0257] ○ (good): There is almost no friction with the hair.

[0258] × (bad): The friction with the hair was clearly felt.

[0259] (Test Example 3B: Finger-through property of heat-treated hair and manageability of heat-treated hair)

[0260] The hair bundle evaluated in the above-mentioned Test Example 2B was dried with a hair dryer. Then, a hair iron (set temperature: 180° C.) was passed through the hair bundle from the upper side to the lower side twice to heat-treat the hair bundle. The hair bundle after the heat treatment was visually observed, and the manageability of the heat-treated hair was determined according to the following criteria. In addition, the finger combability (the magnitude of the resistance caused by catching) of the heat-treated hair bundle when it was passed through a hand comb was evaluated, and the finger combability of the heat-treated hair was determined according to the following criteria.

[0261] <Evaluation Criteria for Finger-Passability of Heat-treated Hair>

[0262] ○ (good): The resistance caused by the hook (the feeling of the finger being hooked) is hardly felt.

[0263] × (bad): The resistance caused by the hook (the feeling of the finger being hooked) is clearly felt.

[0264] <Evaluation Criteria for Groomability of Heat-treated Hair>

[0265] ○ (good): The hair bundle does not spread downward from the upper side, and the hair bundle is gathered as a whole.

[0266] × (bad): The hair bundle spreads significantly from the upper side to the lower side.

[0267] (Test Example 4B: Sustainability of finger-passability of heat-treated hair and sustainability of controllability of heat-treated hair)

[0268] The hair bundle evaluated in the "finger passability of heat-treated hair" and "groomability of heat-treated hair" of the above Test Example 3B was left to stand for 5 hours under the conditions of a temperature of 35°C and a humidity of 80% RH, and then further left to stand for 30 minutes under a room temperature environment (25°C). The hair bundle after standing was visually observed, and the sustainability of the groomability of the heat-treated hair was determined according to the following criteria. In addition, the finger passability (the magnitude of the resistance caused by catching) of the hair bundle after standing was evaluated when it was passed through a hand comb, and the sustainability of the finger passability of the heat-treated hair was determined according to the following criteria.

[0269] <Evaluation Criteria for Sustainability of Finger-Passability of Heat-treated Hair>

[0270] ○ (good): Almost no resistance due to catching (the feeling of catching with fingers). × (bad): The resistance due to catching (the feeling of catching with fingers) is clearly felt. <Evaluation criteria for the sustainability of the controllability of hair after heat treatment>

[0271] ○ (good): The hair bundle does not spread downward from the upper side, and the hair bundle is gathered as a whole.

[0272] × (bad): The hair bundle spreads significantly from the upper side to the lower side.

[0273] The compositions and results are shown in Tables 1 to 5 below.

[0274] [Table 1]

[0275]

[0276] [Table 2]

[0277]

[0278] [Table 3]

[0279]

[0280] [Table 4]

[0281]

[0282] [Table 5]

[0283]

[0284] The emulsified hair cosmetic compositions obtained in Examples 1 to 21 were tested in the same manner as in Test Examples 3A, 3B, 4A, and 4B using curled hair bundles. The hair bundles after heat treatment had good controllability and durability.

Claims

1. An emulsified hair cosmetic composition comprising the following component A, the following component B, the following component C, the following component D and the following component E, Ingredient A: Levulinic acid; Ingredient B: cationic surfactant; Component C: aliphatic alcohol having 8 to 24 carbon atoms; Ingredient D: silicone compound; Ingredient E: Water.

2. The emulsified hair cosmetic composition according to claim 1, comprising the following ingredient F: Ingredient F: Ester oil.

3. The emulsified hair cosmetic composition according to claim 1 or 2, wherein The component D comprises the following component D1 and / or the following component D2, Component D1: silicone oil having a viscosity of 10,000 mPa·s or more at 25°C; Component D2: amino-modified silicone having a viscosity of less than 10,000 mPa·s at 25°C.

4. The emulsified hair cosmetic composition according to claim 1 or 2, comprising the following ingredient G: Component G: a polymer having a structure represented by the following formula (G), [Chemistry 1] In the above formula (G), R1 and R2 each independently represent a linear or branched aliphatic hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom, and * represents a bonding position.

5. The emulsified hair cosmetic composition according to claim 4, wherein The component B comprises the following component B1, Component B1: a compound represented by the following formula (B1), R 1 -C(=O)-NH-C3H6-N + (CH3)3X - (B1) In the formula (B1), R 1 represents a linear or branched aliphatic hydrocarbon group having 11 to 21 carbon atoms, X - Represents Cl - or Br - .

6. The emulsified hair cosmetic composition according to claim 1 or 2, comprising the following ingredient H: Ingredient H: nonionic surfactant.

7. The emulsified hair cosmetic composition according to claim 6, wherein The component H comprises the following component H1, Component H1: polyglycerol fatty acid ester in which 2 to 6 fatty acids form ester bonds with polyglycerol and the average number of moles of glycerol added is 4 to 12.

8. The emulsified hair cosmetic composition according to claim 1 or 2, comprising the following ingredient I, Component I: Cationic polymer.

9. The emulsified hair cosmetic composition according to claim 1 or 2, which has a pH of 7.0 or less.

10. The emulsified hair cosmetic composition according to claim 1 or 2, which is applied to the hair and then used by heat-treating the hair at a heat treatment temperature of 90°C or higher.

11. A method for treating hair, comprising: an application step of applying the emulsified hair cosmetic composition according to claim 1 or 2 to hair; and The heat treatment step heats the hair at a heat treatment temperature of 90° C. or higher.

12. The hair treatment method according to claim 11, wherein: A washing step of rinsing the emulsified hair cosmetic composition applied to the hair is provided between the applying step and the heat treatment step.

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