JP2008115086A - Hair treating agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair treating agent having a viscosity suitable for the application to the hair, having good operability in the case of applying to the hair and high stability of the ingredients and the agent, sufficiently giving a wet and moist feeling and luster and achieving smooth combing with fingers. <P>SOLUTION: The hair treating agent contains hydrogen peroxide, is free from a nonionic surfactant, contains a specific oil, a specific higher alcohol and salicylic acid at specific amounts in addition to a specific cationic surfactant and may further contain other components as necessary. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hair treatment agent. More specifically, the present invention relates to a hair treatment agent containing hydrogen peroxide and suitable as an oxidizing agent for an oxidative hair dye, a hair bleaching agent, and a second agent for a two-bath type permanent wave agent.

  Conventionally, the second agent of a two-bath type permanent wave agent, particularly the second agent for a straight permanent using an iron, has a hydrogen peroxide-containing type and a sodium bromate-containing type. Among these, the hydrogen peroxide-containing agent has the advantage that the standing time after applying to hair is shorter than that of the sodium bromate-containing agent, but conversely, if the leaving time is increased, the hair There was a risk of damaging it.

  That is, when applying the hydrogen peroxide-containing type second agent to the hair, if it takes more time than necessary for the application work, it will take a long time to leave the first applied hair part and the last applied hair part. There was a difference, and there was a risk that the former, which had a longer standing time, suffered damage. In such an application operation, a container generally called an applicator, which is filled with a hole at the top end, is filled with the agent to be applied, and then the applicator is turned upside down to flow or push the agent from the hole onto the hair. Therefore, the agent to be applied is required to have a viscosity that is easy to be removed from the hole of the applicator and that does not drip on the hair once applied to the hair. (Hereafter, these are collectively referred to as operability).

Furthermore, the hydrogen peroxide-containing type second agent has problems in the stability of contained components and agents such as decomposition of hydrogen peroxide and separation of the agent itself over time, and improvement thereof has been desired.
On the other hand, for the purpose of shortening the time required for the application work to hair, an emulsion hair treatment agent in which the viscosity of the hydrogen peroxide-containing second agent is adjusted to a viscosity that is easy to apply has already been proposed. (See Patent Document 1).

Further, for the purpose of improving the stability of ingredients and agents, an emulsion hair treatment agent (see Patent Document 2) containing hydrogen peroxide, higher alcohol, and two specific nonionic surfactants, In addition to hydrogen oxide and a specific antioxidant, there has been proposed an emulsion hair treatment agent (see Patent Document 3) in which both a cationic surfactant and a nonionic surfactant are blended.
Japanese Patent Laid-Open No. 10-87445 JP 2005-162665 A JP 2004-315412 A

  However, when these already proposed hair treatment agents are used, the hair cannot be sufficiently moisturized, and the hair after treatment becomes too light and feels too light. There is a problem that gloss cannot be imparted to hair.

  Therefore, the present invention has a viscosity suitable for application to hair, has high operability when applied to hair, high stability of ingredients and agents, and moist and moist feel on treated hair. It is another object of the present invention to provide a hair treatment agent that is sufficiently glossy and can achieve smooth fingering.

  As a result of intensive studies in view of the above circumstances, the present inventor has found that nonionic surfactants formulated for the purpose of improving the stability of the agent in the existing hair treatment agent include higher alcohols and ester oils contained in the agent. Inhibiting the adhesion of the treatment ingredients to the hair, even if it is an agent containing hydrogen peroxide, in addition to such a nonionic surfactant, in addition to a specific cationic surfactant, If specific oils, specific higher alcohols, salicylic acid, etc. are added in specific amounts, the operability when applied to the hair, the stability of the ingredients and agents can be kept high, and the treated hair will be moist. The present inventors have found that a moist touch and gloss can be sufficiently imparted to achieve smooth fingering, and the present invention has been completed.

That is, the present invention relates to the following matters, for example.
The hair treatment agent according to the present invention is a hair treatment agent containing hydrogen peroxide, and further contains at least one cationic surfactant selected from the group consisting of cetyltrimethylammonium chloride and stearyltrimethylammonium chloride. .35 to 2.45% by weight, volatile silicone having 2 to 8 silicon atoms, isononanoic acid ester, at least one oil selected from the group consisting of isoparaffinic hydrocarbons having a boiling point in the range of 100 to 260 ° C 8.0 to 15.0 wt%, 1.0 to 6.0 wt% of at least one higher alcohol selected from the group consisting of myristyl alcohol and behenyl alcohol, and 0.01 to 0.5 wt% of salicylic acid And a nonionic surfactant is not contained.

Furthermore, it is preferable that the hair treatment agent of this invention contains 1.0 to 7.0 weight% of ester oils liquid at room temperature other than isononanoic acid ester.
Moreover, it is preferable that the hair treatment agent of this invention contains water further.

The hair treatment agent of the present invention is desirably an agent in an emulsified state.
In addition, the hair treatment agent of this invention is used suitably as a 2nd agent of a 2-bath-type permanent wave agent.

  According to the hair treatment agent of the present invention, the operability when applied to the hair, the stability of the contained components and agents can be kept high, and the treated hair is sufficiently moistened and moisturized, Smooth fingering can be achieved.

Hereinafter, the present invention will be specifically described.
The hair treatment agent of the present invention contains hydrogen peroxide, does not contain a nonionic surfactant, and in addition to a specific cationic surfactant, a specific oil and a specific higher alcohol, salicylic acid, etc. Are contained in specific amounts, and may contain other components as required.

Hereinafter, after describing each component, the hair treatment agent of the present invention will be described.
<Hydrogen peroxide>
Hydrogen peroxide is blended in the hair treatment agent of the present invention as an oxidizing agent.

  It is desirable that hydrogen peroxide is contained in 100 wt% of the hair treatment agent in an amount of usually 0.5 to 12.0 wt%, preferably 0.5 to 6.0 wt%. Hydrogen peroxide is inevitably decomposed over time in the agent to some extent, but according to the composition of the hair treatment agent of the present invention, the decomposition is further suppressed and the hair treatment is performed. The original oxidizing power of the agent can be maintained over a long period of time.

<Cationic surfactant>
Furthermore, the hair treatment agent of the present invention usually contains at least one cationic surfactant selected from the group consisting of cetyltrimethylammonium chloride and stearyltrimethylammonium chloride in 100% by weight of the hair treatment agent. It is contained in an amount of 35 to 2.45% by weight, preferably 0.70 to 1.75% by weight.

  Each of cetyltrimethylammonium chloride and stearyltrimethylammonium chloride may be used alone or in combination. When two types are used in combination, the total amount is used within the above range.

  As described above, conventionally, the addition of a nonionic surfactant has been considered effective for maintaining a good emulsified state of a hair treatment agent containing hydrogen peroxide and preventing separation of the agent. However, as a result of the study of the present inventor, such a nonionic surfactant inhibits the adhesion of treatment components such as higher alcohols and ester oils contained in the agent to the hair. As a result, the hair after permanent wave treatment becomes It has been found that this is a factor that causes problems that are too light and tactile, have poor fingering, and cannot impart sufficient gloss to hair.

  On the other hand, in addition to hydrogen peroxide, a hair treatment agent containing the specific cationic surfactant in a specific amount together with a specific oil agent, a specific higher alcohol and salicylic acid, which will be described later, in an amount within the above range. While maintaining high operability and a good emulsified state, the treated hair is sufficiently given a moist and moist feel and gloss, and smooth finger passage can be achieved more reliably.

  Especially, since the specific cationic surfactant does not inhibit the treatment component contained in the agent from adhering to the hair, the treatment component can be sufficiently adhered to the treated hair, It can contribute to the realization of good tactile sensation, gloss, finger feeling, and the like.

<Oil agent>
Furthermore, the hair treatment agent of the present invention comprises, in 100% by weight of the hair treatment agent, volatile silicone having 2 to 8 silicon atoms, isononanoic acid ester, and isoparaffinic hydrocarbon having a boiling point in the range of 100 to 260 ° C. It contains at least one oil agent selected from the group consisting of usually 8.0 to 15.0% by weight, preferably 10.0 to 15.0% by weight.

  These may be used individually by 1 type, respectively, and may be used in combination of 2 or more type. When using in combination of 2 or more types, it uses so that these total amount may become the quantity in the said range.

  In addition to hydrogen peroxide, the hair treatment agent blended in a specific amount with the above-mentioned cationic surfactant, the higher alcohol and salicylic acid described later in an amount within the above range, has high operability and good emulsification. While maintaining the state, the treated hair is sufficiently given a moist and moist feel and gloss, and smooth finger passage can be achieved more reliably.

  Especially, the said oil agent can contribute to realization of high operativity and a favorable emulsification state, when not using a nonionic surfactant and using the specific cationic surfactant mentioned above. In addition, the oil agent, as one of the treatment components, also has an aspect of giving a good feeling to the treated hair in combination with a higher alcohol described later.

More specifically, among the above oil agents, examples of the volatile silicone having 2 to 8 silicon include cyclic silicone and chain silicone having 2 to 8 silicon. Preferred examples of the cyclic silicone include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. These may be used alone or in combination of two or more. Moreover, as this chain silicone, what is marketed, such as silicone SH-200 by Toray Dow Corning Silicone Co., Ltd., can be used, for example.

  Of the above oils, isononanoic acid ester is a kind of so-called ester oil, which is an ester oil that is liquid at room temperature. In this specification, focusing on its function, other esters that are liquid at room temperature described later are used. Distinguish from oil and classify as a specific oil. Examples of the isononanoic acid ester include isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, and the like. These may be used alone or in combination of two or more. In addition, these are marketed and can be obtained as, for example, KAK99, KAK109, KAK139 made by higher alcohol industry.

  Moreover, light fluid isoparaffin is mentioned as an isoparaffin type hydrocarbon which has a boiling point in the range of 100-260 degreeC among the said oil agent, for example. Such a light liquid isoparaffin is marketed and can be obtained as, for example, IP Solvent 2028 (5cs) manufactured by Idemitsu Petrochemical Co., Ltd.

<Higher alcohol>
Furthermore, the hair treatment agent of the present invention usually contains at least one higher alcohol selected from the group consisting of myristyl alcohol and behenyl alcohol in 100% by weight of the hair treatment agent, usually 1.0 to 6.0% by weight, Preferably it is contained in an amount of 2.0 to 4.0% by weight.

  In general, the higher alcohol refers to an alcohol having 6 or more carbon atoms. In the present specification, unless otherwise specified, it means at least one selected from the group consisting of myristyl alcohol and behenyl alcohol.

  These may be used individually by 1 type, respectively, and may be used in combination of 2 or more type. When using in combination of 2 or more types, it uses so that these total amount may become the quantity in the said range.

  In addition to hydrogen peroxide, the above-mentioned higher alcohol in an amount within the above range, the hair treatment agent formulated in a specific amount together with the above-described cationic surfactant and oil agent, and salicylic acid described later, has high operability and good emulsification. While maintaining the state, the treated hair is sufficiently given a moist and moist feel and gloss, and smooth finger passage can be achieved more reliably.

  In particular, the higher alcohol is considered to contribute to the realization of high operability by adjusting the viscosity of the entire hair treatment agent. Furthermore, the higher alcohol is presumed to be one of the treatment components, in combination with the above-mentioned oil agent and the like, giving a good feeling to the hair after the treatment and also having a considerable influence on the emulsified state of the hair treatment agent. .

<Salicylic acid>
Furthermore, the hair treatment agent of the present invention contains salicylic acid in an amount of usually 0.01 to 0.5% by weight, preferably 0.1 to 0.2% by weight, in 100% by weight of the hair treatment agent. Yes.

  Salicylic acid plays a role in inhibiting the decomposition of hydrogen peroxide and adjusting the pH. Hair treatments containing salicylic acid in the above range with the specific amounts of each component described above are effective in decomposing hydrogen peroxide in the agent. In addition, the stability of the whole agent and the operability during application are improved.

<Other ingredients>
Furthermore, the hair treatment agent of the present invention may contain other components than the above-described components as necessary, as long as the object of the present invention is not impaired.

((Ester oil liquid at room temperature other than isononanoic acid ester))
One of the other components includes ester oil that is liquid at room temperature other than isononanoic acid ester. An ester oil that is liquid at room temperature other than isononanoic acid ester means an ester oil having fluidity other than isononanoic acid ester at a temperature of 20 to 30 ° C., among which the melting point is less than 20 ° C. Things are desirable.

  The ester oil which is liquid at room temperature other than the isononanoic acid ester is usually 1.0 to 7.0% by weight, preferably 3.0 to 5.5% by weight in 100% by weight of the hair treatment agent of the present invention. It is desirable to use it so that it is included in an amount.

  Examples of ester oils that are liquid at room temperature other than the isononanoic acid ester include hexyl laurate, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, decyl oleate, octyldodecyl oleate, isostearyl lactate, glyceryl trioctanoate And cetyl octanoate. Among these, isopropyl myristate, isopropyl palmitate, cetyl octoate and the like are preferable because they are excellent in emulsion stability, oxidation stability, and texture. These may be used individually by 1 type, respectively, and may be used in combination of 2 or more type. When using in combination of 2 or more types, it uses so that these total amount may become the quantity in the said range.

  When the hair treatment agent of the present invention is blended so that the specific ester oil is contained in an amount within the above range, the stability of the emulsified state of the agent due to the good oxidative stability and the treatment effect on the hair. It is possible to further improve the feeling of use of hair after treatment, such as touch, gloss, and fingering.

((water))
Moreover, water is mentioned as one of the said other components. Water may be blended in an amount within a range that does not impair the object of the present invention as a medium from the viewpoint of facilitating dissolution and dispersion of the above-described components and viscosity adjustment of the entire agent. Although it does not specifically limit as water, Purified water, such as ion-exchange water and distilled water, is mentioned preferably.

((Other))
In addition to the above components, other components include cationic surfactants other than cetyltrimethylammonium chloride and stearyltrimethylammonium chloride, anionic surfactants, amphoteric surfactants, and higher alcohols other than myristyl alcohol and behenyl alcohol. (However, except cetanol), the well-known components used for cosmetics, such as stabilizers other than salicylic acid, are mentioned. These can be appropriately blended in the hair treatment agent of the present invention in such an amount that does not impair the object of the present invention.

Examples of cationic surfactants other than cetyltrimethylammonium chloride and stearyltrimethylammonium chloride include, for example, alkyltrimethylammonium chloride (also known as behentrimonium chloride), lauryltrimethylammonium chloride, distearyldimethylammonium chloride, dicocoyldimethylchloride. Ammonium, tri (polyoxyethylene) stearylammonium chloride (5E.O.), di (polyoxyethylene) chloride
Oleylmethylammonium (2E.O.), lauryltrimethylammonium bromide, cetyltrimethylammonium bromide, stearyltrimethylammonium bromide; fatty acid amidoamine salts; alkyltrialkylene glycol ammonium salts; benzalkonium salts; benzethonium salts; Examples include imidazolinium salts.

  Examples of the anionic surfactant include alkyl sulfates such as sodium lauryl sulfate; POE alkyl / alkyl allyl ether sulfate such as polyoxyethylene (hereinafter referred to as POE) sodium lauryl ether sulfate and sodium POE nonylphenyl ether sulfate; N-acyl sulfonates; α-olefin sulfonates; alkane sulfonates; N-acyl amino acid salts; POE alkyl ether phosphates and salts thereof.

Examples of amphoteric surfactants include betaine types such as lauryldimethylaminoacetic acid betaine; imidazoline types such as 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium; amino acid types and the like. It is done.
Examples of higher alcohols other than myristyl alcohol and behenyl alcohol (excluding cetanol) include hexyl decanol and octyl dodecanol. Among these, when hexyldecanol and / or octyldodecanol is used in combination with myristyl alcohol or behenyl alcohol, it can be expected that the stability of the emulsified state of the hair treatment agent is further improved.

  Examples of stabilizers other than salicylic acid include phosphoric acid, hydroxyethanediphosphonic acid, ascorbic acid, erythorbic acid, edetate, etidronate, phenacetin, citric acid, sodium citrate, and triethanolamine.

  Other hair protecting agents such as polypeptides, silylated polypeptides, amino acids, pyrrolidone carboxylic acid derivatives and pseudoceramides; wetting agents such as glycerin, propylene glycol, 1,3-butylene glycol: methyl paraben, butyl paraben, propyl paraben, phenoxyethanol And antiseptics such as sodium benzoate; hair nourishing agents; ultraviolet absorbers; fragrances; pigments; pearl agents;

<Hair treatment agent>
The hair treatment agent of the present invention can be produced by appropriately stirring, mixing, heating, cooling, dissolving, dispersing (emulsifying) the above-described components by a known method.

  The form of the hair treatment agent of the present invention is not particularly limited, but is preferably an agent in an emulsified state from the viewpoint of operability during application to hair and suppression of decomposition of hydrogen peroxide in the agent. .

  Also, the dosage form is not particularly limited, but it is preferably an emulsion or cream-like agent from the viewpoint that it is easy to flow or extrude from the applicator and does not sag from the hair after application. That is, the axis No. 3. It is desirable that the viscosity at 25 ° C. measured with a BH type viscometer is 1000 to 10000 mPa · s, more preferably 2000 to 9000 mPa · s, and particularly preferably 3000 to 8000 mPa · s under the condition of a rotation speed of 30 rpm. .

  Furthermore, the use of the hair treatment agent of the present invention is not particularly limited, but it can be used as an oxidizing agent for an oxidative hair dye, a decoloring agent, a second agent for a two-bath type permanent wave agent, and the like. Among these, it can use suitably as a 2nd agent of a 2 bath type permanent wave agent.

EXAMPLES Hereinafter, although this invention is demonstrated further more concretely based on an Example, this invention is not limited to these Examples. In the following examples, “%” is based on weight.
Moreover, the hair treatment agent obtained in each example was evaluated according to the following evaluation methods and evaluation criteria.

<Evaluation of operability>
Twenty professional testers evaluated the following two points (operability (I) and operability (II)) by performing actual hair straightening treatment.

・ Operability (I)
Is it possible to apply the hair treatment agent without difficulty when it is placed in a commercially available applicator (pore diameter: 1.00 mm), which is usually used for permanent waving?

Evaluation criteria: Hair treatment agent comes out of the hole without shaking the applicator: ◎
Shake the applicator once to get the hair treatment agent out of the hole: ○
The hair treatment agent does not come out of the hole unless the applicator is shaken several times:
Even if the applicator is shaken, the hair treatment agent does not come out of the hole: ×
Operability (II)
When the hair treatment agent filled in the applicator is applied to the hair, can it stay on the hair without dripping on the floor?

Evaluation criteria: The hair treatment agent stays on the hair and does not sag at all: ◎
Hair treatment agent stays on the hair but drops slightly: ○
The hair treatment agent stays on the hair but almost droops: △
Hair treatment agent hardly stays on hair and drips: x
<Evaluation after use>
Using the hair treatment agent obtained in each case, hair straightening treatment was performed on 100 models in their 20s to 50s and evaluated. The specific treatment method is as follows. First, a 2-bath permanent wave agent having the composition shown below is applied in an amount of 80 to 100 g according to the amount of hair of the model, left for a few minutes, washed with water, and dried with a dryer. A high-temperature hairstyling iron whose surface temperature was set to 160 ° C. was slid from the root of the hair to the tip of the hair.

Thereafter, the hair treatment agent obtained in each example was used as the second agent, 100 g of this was applied, left at room temperature for 10 minutes, washed with water, and dried with a drier to finish.
Composition of first agent: 50% ammonium thioglycolate 14.0%
Cetanol 4.0%
Stearyltrimethylammonium chloride 2.0%
Polyoxyethylene hydrogenated castor oil (60E.O) 1.5%
Monoethanolamine adjusted to pH 9.0
Ion exchange water was added to make up a total of 100%.

Evaluation items: (1) Glossiness of hair after treatment
(2) Follow the finger of the hair after treatment
(3) Moist feeling of the hair after the treatment Note that the items (1) to (3) were evaluated according to the following criteria.

Evaluation criteria: Very good: ◎
Good: ○
Not good: △
Bad: ×
<Stability evaluation>
・ Stability (I) (Stability in emulsified state)
The hair treatment agent (emulsion) obtained in each example is stored for 1 month under high temperature (50 ° C.) and low temperature (5 ° C.) conditions, and the state of the hair treatment agent (presence / absence of separation) after each storage is stored. While observing visually and comprehensively evaluating the storage stability in both temperature environments based on the following criteria, the viscosity of the hair treatment agent is based on the following criteria based on the touch when stirred with a glass rod at 25 ° C. And sensory evaluation.

Evaluation criteria: No separation was observed, and the viscosity was almost constant: A
There was no separation at all, but there was a change in viscosity:
Slight separation was observed:
Clear separation was seen: ×
・ Stability (II) (hydrogen peroxide stability)
The hair treatment agent (emulsion) obtained in each example was stored at 45 ° C. for 1 month, and its oxidizing power was measured by the following method.

  1 mL of the sample was accurately placed in a 200 mL conical Erlenmeyer flask, added with 10 mL of water and 5 mL of 30% sulfuric acid, immediately sealed and lightly shaken once or twice. Next, 5 mL of a potassium iodide reagent was carefully added, tightly plugged and allowed to stand in the dark for 30 minutes, followed by titration with a 0.1N sodium thiosulfate solution, and the amount consumed was AmL. The content rate of hydrogen peroxide was set to A multiplied by 0.17007.

From the results, the stability of hydrogen peroxide was evaluated according to the following evaluation criteria.
Evaluation criteria:
The hydrogen peroxide content after storage is 90% or more compared to before storage: ◎
The hydrogen peroxide content after storage is 80% or more and less than 90% compared to before storage: ○
Compared to before storage, the hydrogen peroxide content after storage is 70% or more and less than 80%: △
Hydrogen peroxide content after storage is less than 60% compared to before storage: ×
[Examples 1 to 8]
According to the components and blending ratios of Examples 1 to 8 shown in Table 1, hair treatment agents (emulsions) were prepared. The obtained hair treatment agent was evaluated according to the evaluation method and evaluation criteria described above.

The results are shown in Table 1.
[Comparative Examples 1-5]
After preparing a hair treatment agent (emulsion) according to the components and blending ratios of Comparative Examples 1 to 5 shown in Table 1, the hair treatment agent was evaluated in the same manner as in Examples 1 to 8.

  The results are shown in Table 1.

[Examples 9 to 15]
After preparing a hair treatment agent (emulsion) according to the components and blending ratios of Examples 9 to 15 shown in Table 2, the hair treatment agent was evaluated in the same manner as in Examples 1 to 8.

The results are shown in Table 2.
[Comparative Examples 7 to 10]
After preparing a hair treatment agent (emulsion) according to the components and blending ratios of Comparative Examples 7 to 10 shown in Table 2, the hair treatment agent was evaluated in the same manner as in Examples 1 to 8.

  The results are shown in Table 2.

[Examples 16 to 26]
After preparing the hair treatment agent (emulsion) according to the components and blending ratios of Examples 16 to 26 shown in Table 3, the hair treatment agent was evaluated in the same manner as in Examples 1 to 8.

The results are shown in Table 3.
[Comparative Examples 11-12]
After preparing a hair treatment agent (emulsion) according to the components and blending ratios of Comparative Examples 11 to 12 shown in Table 3, the hair treatment agent was evaluated in the same manner as in Examples 1 to 8.

  The results are shown in Table 3.

[Examples 27 to 34]
After preparing a hair treatment agent (emulsion) according to the components and blending ratios of Examples 27 to 34 shown in Table 4, the hair treatment agent was evaluated in the same manner as in Examples 1 to 8.

The results are shown in Table 4.
[Comparative Examples 13 to 15]
After preparing a hair treatment agent (emulsion) according to the components and blending ratios of Comparative Examples 13 to 15 shown in Table 4, the hair treatment agent was evaluated in the same manner as in Examples 1 to 8.

  The results are shown in Table 4.

Claims (5)

A hair treatment comprising hydrogen peroxide, further comprising:
0.35 to 2.45% by weight of at least one cationic surfactant selected from the group consisting of cetyltrimethylammonium chloride and stearyltrimethylammonium chloride;
8.0 to 15.0 weights of at least one oil agent selected from the group consisting of volatile silicone having 2 to 8 silicon atoms, isononanoic acid ester, and isoparaffinic hydrocarbon having a boiling point in the range of 100 to 260 ° C. %,
1.0 to 6.0% by weight of at least one higher alcohol selected from the group consisting of myristyl alcohol and behenyl alcohol;
Containing salicylic acid in an amount of 0.01 to 0.5% by weight; and
A hair treatment agent characterized by not containing a nonionic surfactant.   Furthermore, 1.0-7.0 weight% of ester oils liquid at room temperature other than isononanoic acid ester are contained, The hair treatment agent of Claim 1 characterized by the above-mentioned.   The hair treatment agent according to claim 1 or 2, further comprising water.   The hair treatment agent according to any one of claims 1 to 3, wherein the hair treatment agent is emulsified.   The hair treatment agent according to any one of claims 1 to 4, which is used as a second agent of a two-bath type permanent wave agent.