JP6837829B2 - Hair treatment agent and hair treatment method - Google Patents

Description

The present invention relates to a hair treatment agent and a hair treatment method.

Conventionally, amidoamine, which is said to be less irritating to the scalp, is blended in hair treatment agents such as treatments and conditioners for improving the feel of hair.
For example, Patent Document 1 discloses a hair treatment agent containing a fatty acid amidoamine and a higher alcohol.

Japanese Unexamined Patent Publication No. 2011-121899

By the way, conventionally, it has been desired to soften the hair, but in particular, it may be desired to simultaneously improve the fact that the tips of the hair bounce off and the hair does not fit well.
However, in a hair treatment agent containing a fatty acid amidoamine and a higher alcohol, it has not been studied so far to improve the softness of the hair and to improve the fit of the hair tips.

In view of the above circumstances, an object of the present invention is to provide a hair treatment agent and a hair treatment method capable of improving the softness of the hair and improving the fit of the tips of the hair.

As a result of diligent studies by the present inventors, in a hair treatment agent containing an aliphatic amidamine, a setanol, or a higher alcohol other than setanol and cetanol, and an α-hydroxycarboxylic acid, an aliphatic amidamine has been used. We have newly found that the softness of hair and the fit of hair tips change depending on the molar ratio of cetanol or higher alcohols other than cetanol and cetanol, and by setting the molar ratio to a specific ratio, the hair We have found that it is possible to improve the softness of the hair and to improve the fit of the hair tips at the same time, and have completed the present invention.

The hair treatment agent of [1] is a hair treatment agent containing (A) fatty acid amidoamine, (B) cetanol, or a higher alcohol other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid. , (A) The molar ratio [(B) / (A) ratio] of (B) cetanol or higher alcohol other than cetanol and cetanol to fatty acid amidamine is 2.5 or more.

The hair treatment agent of [2] is the hair treatment agent of [1], and the molar ratio of (A) cetanol to (A) fatty acid amidamine or higher alcohol other than cetanol and cetanol [(B) / (A). ) Ratio] is 3.5 or more and 4.5 or less.

The hair treatment agent of [3] is the hair treatment agent of [1] or [2] and contains (D) hydrolyzed keratin.

The hair treatment agent of [4] is the hair treatment agent of [3], and the blending amount of (D) hydrolyzed keratin is 0.5% by mass or more.

The hair treatment agent of [5] is any of the hair treatment agents of [1] to [4] and contains only (B) cetanol or cetanol as a higher alcohol other than cetanol and cetanol. is there.

The hair treatment agent of [6] is any of the hair treatment agents of [1] to [5], and (E) 1,2-alkanediol represented by the following general formula (2) is blended. It is a thing.
[In the above general formula (2), n = 1 to 5. ]

The hair treatment agent of [7] is any of the hair treatment agents of [1] to [6], and (F) contains a glycerin derivative represented by the following general formula (3).
Gly- [O {(PO) x (EO) y}-(BO) zH] ₃ (3)
[In the above general formula (3), Gly represents a glycerin residue excluding a hydroxyl group, PO represents an oxypropylene group, EO represents an oxyethylene group, BO represents an oxybutylene group, and x is the average of PO. Represents the number of added moles, y represents the average number of added moles of EO, z represents the average number of added moles of BO, x is 3 or more and 7 or less, y is 5 or more and 10 or less, and z is 1 or more and 5 or less. .. ]

The hair treatment agent of [8] is any one or 2 of the hair treatment agents of [1] to [7], which is selected from (G) lanolin fatty acid cholesteryl, liquid lanolin, decaglyceryl decaoleate, and kaolin. It is a mixture of seeds and above.

The hair treatment method of [9] is a method of performing hair treatment using any of the hair treatment agents [1] to [8].

According to the hair treatment agent and the hair treatment method according to the present invention, it is possible to improve the softness of the hair and to improve the fit of the tips of the hair.

Hereinafter, embodiments of the present invention will be described with reference to examples.

The hair treatment agent of the present embodiment is a hair treatment agent containing (A) fatty acid amidoamine, (B) cetanol, or a higher alcohol other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid. , (A) The molar ratio [(B) / (A) ratio] of (B) cetanol or higher alcohol other than cetanol and cetanol to fatty acid amidamine is 2.5 or more.
In addition, the hair treatment method of the present embodiment is a method of applying the above hair treatment agent to the hair to perform the hair treatment.

<(A) Fatty acid amidoamine>
The hair treatment agent according to the present embodiment contains one or more fatty acid amidoamines.
As the fatty acid amide amine, one having a structure represented by the following general formula (1) is used.
R ^1- CO-NH- (CH) _n- NR ² R ³ (1)
(In the above general formula (1), R ¹ , n, R ² , and R ³ are as follows. R ¹ has 11 or more and 25 or less carbon atoms (may be 15 or more and 21 or less carbon atoms). Represents a hydrocarbon group or a hydroxy hydrocarbon group. This R ¹ is saturated or unsaturated, and is linear or branched. N is 1 or more and 4 or less (2 or more and 3). the .R ² represents an integer of may also be.) below, an alkyl group or hydroxyalkyl group having 3 or less carbon atoms (may be two or less carbon atoms.). the R ² represents a linear or branched R ³ represents an alkyl group or a hydroxyalkyl group having 3 or less carbon atoms (which may be 2 or less carbon atoms). This R ³ is a linear or branched chain.

Examples of the fatty acid amide amine represented by the general formula (1) include lauric acid dimethylaminopropylamide, myristic acid dimethylaminopropylamide, palmitate dimethylaminopropylamide, stearate dimethylaminopropylamide, and behenic acid dimethylaminopropylamide. , Oleate dimethylaminopropylamide, isostearic acid dimethylaminopropylamide, linoleic acid dimethylaminopropylamide, ricinoleic acid dimethylaminopropylamide, hydroxystearic acid dimethylaminopropylamide, stearate N, N-dihydroxymethylaminopropylamide, laurin Acid diethylaminoethylamide, myristic acid diethylaminoethylamide, palmitate diethylaminoethylamide, stearate diethylaminoethylamide, behenic acid diethylaminoethylamide, oleic acid diethylaminoethylamide, linoleic acid diethylaminoethylamide, ricinoleic acid diethylaminoethylamide, isostearate diethylamino Ethylamide, hydroxystearic acid diethylaminoethylamide, stearate N, N-dihydroxyethylaminoethylamide, lauric acid diethylaminopropylamide, myristic acid diethylaminopropylamide, palmitate diethylaminopropylamide, stearate diethylaminopropylamide, behenate diethylaminopropylamide Examples thereof include amides, diethylaminopropylamide oleate, diethylaminopropylamide linoleic acid, diethylaminopropylamide ricinoleinate, diethylaminopropylamide isostearate, diethylaminopropylamide hydroxystearate, and N, N-dihydroxyethylaminopropylamide stearate.

The amount of the fatty acid amidoamine blended in the hair treatment agent according to the present embodiment is preferably 0.5% by mass or more and 8% by mass or less, and more preferably 2% by mass or more and 5% by mass or less.

<(B) Cetanol or higher alcohols other than cetanol and cetanol>
The hair treatment agent according to the present embodiment contains cetanol or a higher alcohol other than cetanol and cetanol.
That is, at least cetanol is blended in the hair treatment agent according to the present embodiment, and a higher alcohol other than cetanol may be further blended. Here, cetanol is an aliphatic alcohol having 16 carbon atoms (molecular weight: 242.44).

As the above-mentioned cetanol or higher alcohols other than cetanol and cetanol, only cetanol may be blended.
The higher alcohol other than cetanol is a known higher alcohol, and preferably has 16 or more and 22 or less carbon atoms. Examples of the higher alcohol include linear saturated alcohols such as stearyl alcohol, araquil alcohol and behenyl alcohol; linear unsaturated alcohols such as oleyl alcohol; hexyldecanol, octyldodecanol, isosetyl alcohol and isostearyl alcohol. Branched saturated alcohol; From the viewpoint of dispersion stability of oil droplets in a hair treatment agent, a linear saturated alcohol having 16 to 22 carbon atoms is preferable, and stearyl alcohol is preferable as a higher alcohol other than cetyl alcohol. Further, in order to reduce the viscosity of the hair treatment agent, a specific branched alcohol such as hexyldecanol, octyldodecanol, decyltetradecanol, and dodecylhexadecanol is suitable.

The amount of cetanol or higher alcohol other than cetanol and cetanol to be blended in the hair treatment agent according to the present embodiment is preferably 1% by mass or more and 15% by mass or less, and more preferably 5% by mass or more and 10% by mass or less. ..

The molar ratio [(B) / (A) ratio] of (B) cetanol or higher alcohol other than cetanol and cetanol to (A) fatty acid amidamine of the hair treatment agent according to the present embodiment is the fit of the hair tips. From the viewpoint of improving the softness, it is 2.5 or more, preferably 3.5 or more and 4.5 or less, and more preferably 3.8 or more and 4.2 or less.

<(C) α-Hydroxycarboxylic acid>
The hair treatment agent according to the present embodiment contains α-hydroxycarboxylic acid. The α-hydroxycarboxylic acid is one or more selected from α-hydroxymonocarboxylic acid having 6 or less carbon atoms, α-hydroxydicarboxylic acid, and α-hydroxytricarboxylic acid.
Examples of the α-hydroxymonocarboxylic acid include lactic acid, glycolic acid, glyceric acid, 2-hydroxybutyric acid, and mandelic acid. Examples of the α-hydroxydicarboxylic acid include tartaric acid and malic acid. Examples of the α-hydroxytricarboxylic acid include citric acid.
Above all, it is preferable to add α-hydroxymonocarboxylic acid from the viewpoint of further improving the fit and softness of the hair tips.

In addition, when α-hydroxycarboxylic acid is used as compared with the case where phosphoric acid is used as the acid together with the above-mentioned components (A) and (B), the emulsification stability of the hair treatment agent can be improved. it can.
The blending amount of the α-hydroxycarboxylic acid is preferably 0.1% by mass or more and 5% by mass or less, and more preferably 0.5% by mass or more and 3% by mass or less.

The ratio of the blending amount of the component (C) to the blending amount of the component (A) is, for example, 0.1 or more and 0.8 or less.

(Arbitrary ingredient)
The optional component to be blended in the hair treatment agent according to the present embodiment is appropriately selected from those known as raw materials for the hair treatment agent. The optional components include (D) hydrolyzed keratin, (E) 1,2-alkanediol, (F) glycerin derivative, (G) component described later, water and the like, excluding the above (A) to (C) components. It is compounded.
Further, as optional components other than the above components (A) to (G) and water, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, polyhydric alcohols, lower alcohols, saccharides, esters Oils, fats and oils, fatty acids, hydrocarbons, waxes, silicones, polymer compounds, amino acids, animal and plant extracts, microbial derivatives, inorganic compounds, synthetic fragrances, preservatives, metal ion blockers, UV absorbers, etc.

<(D) Hydrolyzed keratin>
It is preferable that the hair treatment agent according to the present embodiment contains hydrolyzed keratin. Hydrolyzed keratin is a hydrolyzate of keratin protein.
By blending hydrolyzed keratin with the hair treatment agent, the fit and softness of the hair tips are improved. This hydrolyzed keratin may be used alone or in combination of two or more. As the hydrolyzed keratin, for example, those derived from wool or feathers can be used.

The number average molecular weight (Mn) of the hydrolyzed keratin is preferably 100 or more and 50,000 or less. As the lower limit of Mn, 200 is more preferable, and 300 is further preferable. Further, as the upper limit of Mn, 30,000 is more preferable, and 10,000 is further preferable.
As the hydrolyzed keratin, those having different number average molecular weights (Mn) from each other may be used in combination. For example, Mn of 100 or more and 1000 or less, Mn of 5000 or more and 15000 or less, and Mn of 20000 or more and 40,000 or less are used in combination, and the blending ratio of Mn of 100 or more and 1000 or less is the largest. It may be blended as follows.

The number average molecular weight (Mn) of hydrolyzed keratin is a value calculated by "{(total nitrogen amount × (average amino acid molecular weight-18)) / amino nitrogen amount} +18". Here, the "total nitrogen amount" can be measured by the Kjeldahl method, the "average amino acid molecular weight" can be obtained from the amino acid composition ratio by amino acid analysis, and the "amino acid nitrogen amount" can be measured by the Van Slyke method.

The blending amount of the hydrolyzed keratin is preferably 0.5% by mass or more and 10% by mass or less, preferably 1% by mass or more and 8% by mass, from the viewpoint of improving the fit and softness of the hair tips and the viscosity of the hair treatment agent. % Or less is more preferable, and 1.5% by mass or more and 5% by mass or less is particularly preferable.

<(E) 1,2-Alkanediol>
The hair treatment agent according to the present embodiment contains one or more 1,2-alkanediols represented by the following general formula (2) from the viewpoint of further improving the fit and softness of the hair tips. May be done.
(In the above general formula (2), n = 1 to 5 (preferably n = 2 to 4).)

Examples of the 1,2-alkanediol represented by the general formula (2) include 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol and the like. Be done.

The blending amount of 1,2-alkanediol represented by the general formula (2) is preferably 0.1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.

<(F) Glycerin derivative>
The hair treatment agent according to the present embodiment may contain a glycerin derivative represented by the following general formula (3). The glycerin derivative is not particularly limited, and can be obtained, for example, by adding ethylene oxide and propylene oxide to glycerin and then adding butylene oxide.
Gly- [O {(PO) x (EO) y}-(BO) zH] ₃ (3)
[In the above general formula (3), Gly represents a glycerin residue excluding a hydroxyl group, PO represents an oxypropylene group, EO represents an oxyethylene group, BO represents an oxybutylene group, and x is the average of PO. Represents the number of added moles, y represents the average number of added moles of EO, z represents the average number of added moles of BO, x is 3 or more and 7 or less, y is 5 or more and 10 or less, and z is 1 or more and 5 or less. .. ]

The hair treatment agent according to the present embodiment contains polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether (3B.O.) (8EO) (5P.O.) represented by the following formula (3a) as a glycerin derivative. O.) may be blended.
Gly- [O {(PO) ₅ (EO) ₈ }-(BO) ₃ H] ₃ (3a)

The blending amount of the glycerin derivative represented by the general formula (3) is preferably 0.5% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.
When the glycerin derivative represented by the general formula (3) is blended with the hair treatment agent, it is represented by the general formula (2) from the viewpoint of further improving the fit and softness of the hair tips. It is preferable to mix it with 1,2-alkanediol.

<(G) component>
The hair treatment agent according to the present embodiment may contain one or more selected from lanolin fatty acid cholesteryl, liquid lanolin, decaglyceryl decaoleate, and kaolin as the component (G).

Lanolin fatty acid cholesteryl is an ester of lanolin fatty acid and cholesterol.
The blending amount of the lanolin fatty acid cholesteryl is preferably 0.05% by mass or more and 5% by mass or less, and more preferably 0.1% by mass or more and 3% by mass or less.

Liquid lanolin is a liquid lipid obtained from lanolin.
The blending amount of the liquid lanolin is preferably 0.01% by mass or more and 5% by mass or less, and more preferably 0.1% by mass or more and 3% by mass or less.

Decaglyceryl decaoleate is a polyglycerin fatty acid ester of oleic acid and decaglycerin.
The blending amount of decaglyceryl decaoleate is preferably 0.05% by mass or more and 5% by mass or less, and more preferably 0.1% by mass or more and 3% by mass or less.

Kaolin is hydrous aluminum silicate.
The blending amount of kaolin is preferably 0.01% by mass or more and 3% by mass or less, and more preferably 0.02% by mass or more and 1% by mass or less.

<Water>
Water may be blended as a solvent in the hair treatment agent of this embodiment. The blending amount of water is, for example, 60% by mass or more and 95% by mass or less.

(Dosage form)
Examples of the dosage form of the hair treatment agent according to the present embodiment include liquid, creamy, and foamy.
The dosage form is preferably an oil-in-water emulsion.

(viscosity)
The viscosity of the hair treatment agent according to the present embodiment is, for example, a value after 60 seconds measured at 25 ° C. and 12 rpm using a B-type viscometer is 3000 mPa · s or more and 60,000 mPa · s or less.

(PH)
The pH of the hair treatment agent according to this embodiment is, for example, 3.0 or more and 6.0 or less. As the pH, the measured value at 25 ° C. is adopted.

(Target hair)
The target hair to be treated with the hair treatment agent according to the present embodiment may be either hair having a history of perm treatment, coloring treatment, or bleaching treatment, or hair having no history of perm treatment, coloring treatment, or bleaching treatment.

(Use)
The hair treatment agent according to the present embodiment is not particularly limited, and is a shampoo, conditioner, conditioner, treatment (for example, a non-rinse treatment, a rinse treatment, a hair styling treatment, a component of a multi-agent treatment, and a perm pretreatment. Treatment for, treatment for perm post-treatment, treatment for coloring pre-treatment, treatment for coloring post-treatment, treatment for decolorization pre-treatment, treatment for decolorization post-treatment ) And other hair care agents, but among them, it is preferable to use it as a wash-off treatment.

Hereinafter, the present invention will be described in detail with reference to Examples, but the description of these Examples does not limit the present invention.

By blending water and raw materials, the hair treatment agents of Examples and Comparative Examples were produced. The raw materials and the blending concentrations blended at this time are shown in Tables 1 to 11 below. In Tables 1 to 11, dimethylaminopropylamide stearate (molecular weight: 368.64) was used as (A) fatty acid amide amine. Further, "LexFeel D4" (manufactured by Inolex Chemical) used in Tables 1 to 11 is a mixture of neopentyl glycol diheptate and isododecane.

(Evaluation method and evaluation criteria for "fitting of hair tips" and "softness")
After washing the hair bundle with 0.5 g of shampoo (“DEESSE'S NEU Willow Luxe” manufactured by Milbon Co., Ltd.) for 5 g of the hair bundle, the hair bundle was washed with running water and towel-dried. Subsequently, 0.5 g of the hair treatment agent of each Example or Comparative Example was applied to the wet hair bundle, the hair bundle was rinsed with running water, and then dried with a dryer. The "fitting of hair tips" and "softness" of the dried hair bundles were sensory-evaluated by the consensus of five panelists according to the following evaluation criteria.

Evaluation Criteria for "Fit of Hair" ○: The tip of hair fits better than the standard hair bundle.
-: The standard hair bundle and the tip of the hair are the same.
Δ: The tip of the hair does not fit well as compared with the standard hair bundle.
X: Compared to the standard hair bundle, the tip of the hair does not fit very well.

Evaluation Criteria for "Softness" ○: The feel is softer than the standard hair bundle.
-: Equivalent to the standard hair bundle and soft touch.
Δ: The feel is harder than that of the standard hair bundle.
X: Very hard to the touch compared to the standard hair bundle.

(Evaluation method and evaluation criteria for "viscosity")
The viscosities of the hair treatment agents of Examples 3a and Comparative Examples 3a to 3e, Examples 4a and 4b, and Examples 5a and 5b were evaluated according to the following evaluation criteria.
◯: The viscosity is higher than that of the standard hair treatment agent.
-: The viscosity is equivalent to that of the standard hair treatment agent.
X: The viscosity is lower than that of the standard hair treatment agent.

According to Table 1 above, dimethylaminopropylamide stearate, which is (A) fatty acid amide amine, is compared with the case where quaternary ammonium salt (A') hebenyltrimethylammonium chloride is blended as a cationic surfactant. It can be seen that the addition of lactic acid, which is (C) α-hydroxycarboxylic acid, can improve the fit and softness of the tips of the hair.

According to Table 2 above, the hair tips are settled and softened according to the molar ratio [(B) / (A) ratio] of (B) cetanol or higher alcohols other than cetanol and cetanol to (A) fatty acid amidoamine. Can be seen to change. Further, it can be seen that the molar ratio can be 2.5 or more, and particularly when it is 3.5 or more and 4.5 or less, both the fit and softness of the hair tips can be improved. ..

According to Table 3 above, for agents containing (A) fatty acid amidoamine, (B) cetanol, or higher alcohols other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid, D) It can be seen that when hydrolyzed keratin is blended, both the fit and softness of the hair tips can be improved as compared with the case where various hydrolyzed proteins and the like shown as (D') are blended.
When various hydrolyzed proteins shown as (D') are combined with (A) fatty acid amidamine, a complex is formed depending on the blending amount of the various hydrolyzed proteins of (D'), and the hair treatment agent. Will become a moisturizing agent, and there is a risk that it will not be able to be applied evenly to the hair. Therefore, the various hydrolyzate proteins shown as (D') in Table 3 above are blended in an amount so that the hair treatment agent does not become a fluffy agent.

According to Tables 4 and 5 above, for agents containing (A) fatty acid amidoamine, (B) cetanol, or higher alcohols other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid. Further, when (D) hydrolyzed keratin is blended, (D) hydrolyzed keratin may be blended more sufficiently from the viewpoint that the fit, softness and viscosity of the hair tips can be improved. It turns out to be good.

According to Table 6 above, for agents containing (A) fatty acid amidoamine, (B) cetanol, or higher alcohols other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid, E) When 1,2-pentanediol, which is a specific 1,2-alkanediol of the component, is blended, the tip of the hair is softer and softer than when various polyhydric alcohols shown as (E') are blended. It can be seen that both can be made good.

According to Table 7 above, for agents containing (A) fatty acid amidoamine, (B) cetanol, or higher alcohols other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid, When 1,2-pentanediol, which is a specific 1,2-alkanediol of the E) component, and a specific glycerin derivative of the (F) component are mixed in combination, when only the (E) component is mixed, It can be seen that the fit and softness of the tips of the hair can be improved as compared with the case where only the component (F) is blended.

According to Table 8 above, for agents containing (A) fatty acid amidoamine, (B) cetanol, or higher alcohols other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid, It can be seen that the addition of the soft lanolin fatty acid cholesteryl, which is one of the components of G), the lanolin fatty acid cholesteryl, makes it possible to improve the fit and softness of the hair tips.

According to Table 9 above, for agents containing (A) fatty acid amidoamine, (B) cetanol, or higher alcohols other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid, It can be seen that the addition of liquid lanolin, which is one of the components of G), makes it possible to improve the fit and softness of the tips of the hair. In particular, when the lanolin fatty acid cholesteryl, which is the component (G), is used in combination with liquid lanolin, it can be seen that the fit and softness of the hair tips are further improved.

According to Table 10 above, for agents containing (A) fatty acid amidoamine, (B) cetanol, or higher alcohols other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid, It can be seen that the addition of decaglyceryl decaorainate, which is one of the components of G), makes it possible to improve the fit and softness of the tips of the hair.

According to Table 11 above, for agents containing (A) fatty acid amidoamine, (B) cetanol, or higher alcohols other than cetanol and cetanol, and (C) α-hydroxycarboxylic acid, It can be seen that the addition of kaolin, which is one of the components of G), makes it possible to improve the fit and softness of the tips of the hair.

Claims (11)

(A) Fatty acid amidoamine,
(B) Cetanol or higher alcohols other than cetanol and cetanol ,
(C) alpha-hydroxy carboxylic acids, and
(D) Hydrolyzed keratin,
Is a hair treatment agent containing
Wherein (A) the relative fatty acid amidoamine (B) cetanol, or, the molar ratio of the higher alcohol other than cetanol and cetanol [(B) / (A) ratio] Ri is 2.5 or more der,
A hair treatment agent characterized in that the blending amount of the hydrolyzed keratin (D) is 0.5% by mass or more. (A) Fatty acid amidoamine,
(B) Cetanol or higher alcohols other than cetanol and cetanol ,
(C) alpha-hydroxy carboxylic acids, and
(E) 1,2-Alkanediol represented by the following general formula (2),
Is a hair treatment agent containing
The feature is that the molar ratio [(B) / (A) ratio] of the (B) cetanol or a higher alcohol other than cetanol and cetanol to the (A) fatty acid amidamine is 2.5 or more and 4.5 or less. Hair treatment agent.



[In the above general formula (2), n = 1 to 5. ] (F) The hair treatment agent according to claim 1 or 2, which contains a glycerin derivative represented by the following general formula (3).
Gly- [O {(PO) x (EO) y}-(BO) zH] ₃ (3)
[In the above general formula (3), Gly represents a glycerin residue excluding a hydroxyl group, PO represents an oxypropylene group, EO represents an oxyethylene group, BO represents an oxybutylene group, and x is the average of PO. Represents the number of added moles, y represents the average number of added moles of EO, z represents the average number of added moles of BO, x is 3 or more and 7 or less, y is 5 or more and 10 or less, and z is 1 or more and 5 or less. .. ] (G) The hair treatment agent according to any one of claims 1 to 3 , which contains one or more selected from lanolin fatty acid cholesteryl, liquid lanolin, decaglyceryl decaolinate, and kaolin. (A) Fatty acid amidoamine,
(B) Cetanol or higher alcohols other than cetanol and cetanol ,
(C) alpha-hydroxy carboxylic acids, and
(F) A glycerin derivative represented by the following general formula (3) and / or one or more selected from (G) lanolin fatty acid cholesteryl, liquid lanolin, decaglyceryl decaolinate, and kaolin.
Is a hair treatment agent containing
A hair treatment agent characterized in that the molar ratio [(B) / (A) ratio] of the (B) cetanol or a higher alcohol other than cetanol and cetanol to the (A) fatty acid amidamine is 2.5 or more. ..
Gly- [O {(PO) x (EO) y}-(BO) zH] ₃ (3)
[In the above general formula (3), Gly represents a glycerin residue excluding a hydroxyl group, PO represents an oxypropylene group, EO represents an oxyethylene group, BO represents an oxybutylene group, and x is the average of PO. Represents the number of added moles, y represents the average number of added moles of EO, z represents the average number of added moles of BO, x is 3 or more and 7 or less, y is 5 or more and 10 or less, and z is 1 or more and 5 or less. .. ] (D) The hair treatment agent according to claim 2 or 5, which contains hydrolyzed keratin. The hair treatment agent according to claim 6 , wherein the amount of the hydrolyzed keratin (D) is 0.5% by mass or more. (E) The hair treatment agent according to any one of claims 1, 5, 6 and 7, which contains 1,2-alkanediol represented by the following general formula (2).


[In the above general formula (2), n = 1 to 5. ] Claim 1 to the molar ratio [(B) / (A) ratio] of the (B) cetanol or a higher alcohol other than cetanol and cetanol to the (A) fatty acid amidamine is 3.5 or more and 4.5 or less. The hair treatment agent according to any one of 8. The hair treatment agent according to any one of claims 1 to 9 , wherein only cetanol is blended as (B) cetanol or higher alcohol other than cetanol and cetanol. A hair treatment method using the hair treatment agent according to any one of claims 1 to 10.