JP2003081779A - Hair treating agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair treating agent with which the hair damaged caused by a hair color treatment or a permanent wave treatment can be improved. SOLUTION: The hair treatment agent is obtained by compounding a ceramide and a cationic surfactant at the same time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a hair treatment agent for improving hair damaged by hair color, perm and the like.

[0002]

2. Description of the Related Art At present, many women are using hair colors, perms, etc. in the process of individualization. But the hair is
Damage is caused by such chemical factors, and further damage is caused by washing hair. In order to prevent damage, hair rinsing agents, hair conditioners and the like containing a cationic surfactant are used, but sufficient effects have not been obtained. Most of these people have a problem that hair is damaged when using a hair color, a perm and the like, and a hair treatment agent that can improve damaged hair is desired.

[0003]

That is, an object of the present invention is to provide a hair treatment agent which improves hair damaged by hair color, perm and the like.

[0004]

The inventors of the present invention have completed the present invention as a result of earnest studies in view of the above matters. That is, the present invention provides a hair treatment agent containing ceramide and a cationic surfactant.

The ceramide in the present invention is not particularly limited, but either sphingosine or phytosphingosine is used as a skeleton, and fatty acid, α
-Bonded with a hydroxy acid or an omega-hydroxy acid. There are several compounds with different fatty acid carbon numbers and unsaturations. Preferably, (2S, 3R)-
2-octadecanoylaminooctadecane-1,3-diol (hereinafter referred to as ceramide 2) and N-2-hydroxystearoyl phytosphingosine (hereinafter referred to as ceramide 6). These are obtained by extraction or synthesis from animals and plants, but are not limited thereto.

The cationic surfactant in the present invention is not particularly limited, but may be an alkyl tertiary amine salt or an alkyl quaternary ammonium salt. The alkyl tertiary amine salt is obtained by neutralizing an amidoamine type surfactant with an inorganic acid such as hydrochloric acid or phosphoric acid or an organic acid such as citric acid, lactic acid, glycolic acid or malic acid. Examples of the amidoamine-type activator include the Katinal series manufactured by Toho Chemical Co., Ltd. and the Parner series manufactured by Miyoshi Yushi Co., Ltd. Preferably, stearic acid dimethylaminopropylamide is neutralized with glycolic acid. The alkyl quaternary ammonium salt is a monoalkyl type quaternary ammonium salt or a dialkyl type ammonium salt. Preferred are stearyl trimethyl ammonium chloride and distearyl dimethyl ammonium chloride.

In the present invention, thickeners, pearling agents, oily components, preservatives, ultraviolet absorbers, powders, fragrances, etc., which have been conventionally used, may be used in any combination as long as the object of the present invention is not impaired. You may use it.

The blending amounts of the ceramide and the cationic surfactant used in the present invention are not particularly limited, but are preferably as follows. That is, when the numerical range is expressed as a weight percentage, ceramide is preferably 0.002 to 0.5%. If it is less than 0.002%, the effect may not be exhibited, and if it is more than 0.5%, it is not economical. The cationic surfactant is preferably 0.1 to 5.0%. If it is less than 0.1%, the effect may not be exhibited, and if it is more than 5.0%, gelation may occur.

The hair treatment agent of the present invention is called, for example, a hair conditioner, a hair conditioner, a hair treatment, a hair pack, and the like, and can be applied to a hair spray, a hair essence and the like.

[0010]

INDUSTRIAL APPLICABILITY The present invention contains the above-mentioned components and can be used to improve damaged hair by using it after washing hair.

[0011]

[Experimental Example] Next, a method for evaluating the improvement of damaged hair will be described.

(Preparation of Damaged Hair) Commercially available black hair of Chinese women mixed with white hair was dyed 4 times with a commercially available hair color and further brushed 100 times when dried.

(Measurement of water content) Each sample was measured at a relative humidity of 75
% Sulfuric acid desiccator at room temperature for 24 hours, and the weight after standing is precisely measured. Furthermore, 105
Dry at 2 ° C. for 2 hours, cool in a silica gel desiccator, and measure the weight after cooling accurately. Determine the water content (%) in the sample from the difference before and after drying.

(Measurement of amount of dissolved keratin) Sample about 0.5 g
Is accurately weighed, 40 mL of 0.5% aqueous sodium lauryl sulfate solution is accurately added thereto, and the mixture is stirred for 15 minutes by ultrasonic cleaning. The amount of keratin in this sample solution is measured by the Lowry method, and converted into the amount of BovineAlbumin manufactured by Seikagaku Corporation to obtain the amount. The evaluation criteria are as follows. ⊚: Very low (10 mg / g or less) ○: Slightly low (10 to 20 mg / g) Δ: Slightly high (20 to 25 mg / g) ×: Very high (25 mg / g or higher)

(Conditioning effect) The sample was washed with a commercially available shampoo, each hair treatment agent was uniformly applied, rinsed with warm water for 30 seconds, and then dried with a towel dryer and a drier to obtain "smoothness of hair". "Hair gloss" was evaluated. The evaluation criteria are as follows. ◎: Very good ○: Somewhat good △: Somewhat bad ×: Bad

The experimental results are shown in Table 1.

The symbols shown in Tables 1 and 2 are as follows. A: Ceramide 2 B: Dimethylaminopropylamide stearate C: Glycolic acid D: Stearyltrimethylammonium chloride E: Distearyldimethylammonium chloride

Treatment conditioners having the compositions shown in Tables 1 and 2 were prepared.

[Table 1]

[Table 2]

The products of the present invention prepared in Tables 1 and 2 had an appropriate water content, a small amount of dissolved keratin, smoothness and gloss, and improved damaged hair.

[0020]

EXAMPLES The present invention will be described in detail with reference to examples, but the present invention is not limited to the examples.

[0021] Example 1 Hair rinse Ceramide 2 0.1 Cetanol 3.0 Glycerin 5.0 Stearic acid dimethylaminopropylamide 2.0 Glycolic acid 0.4 Purified water balance

[0022] Example 2 Hair conditioner Ceramide 2 0.5 Glycerin 5.0 Stearic acid dimethylaminopropylamide 5.0 Glycolic acid 1.0 Purified water balance

[0023] Example 3 Hair rinse Ceramide 2 0.05 Stearyl alcohol 3.0 1,3-butylene glycol 2.0 Stearic acid dimethylaminopropylamide 0.5 Citric acid 0.1 Purified water balance

[0024] Example 4 Hair conditioner Ceramide 2 0.2 Stearyl alcohol 2.5 Propylene glycol 4.0 Liquid paraffin 2.0 Stearyl trimethyl ammonium chloride 3.0 Purified water balance

[0025] Example 5 Hair Conditioner Ceramide 6 0.5 Cetanol 1.0 1,3-butylene glycol 3.0 Distearyl dimethyl ammonium chloride 3.5 Purified water balance

Examples 1 to 5 were tested and evaluated in accordance with the test method of Experimental Example, and good effects were obtained.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Miyawaki Isamu             2-7 Torimicho, Nishi-ku, Nagoya-shi, Aichi Japan             Nard Cosmetics Co., Ltd. (72) Inventor Miko Aoki             2-7 Torimicho, Nishi-ku, Nagoya-shi, Aichi Japan             Nard Cosmetics Co., Ltd. (72) Inventor Izumi Ishii             2-7 Torimicho, Nishi-ku, Nagoya-shi, Aichi Japan             Nard Cosmetics Co., Ltd. (72) Inventor Satoru Nakata             2-7 Torimicho, Nishi-ku, Nagoya-shi, Aichi Japan             Nard Cosmetics Co., Ltd. F-term (reference) 4C083 AC022 AC072 AC122 AC302                       AC641 AC642 AC691 AC692                       BB06 DD23 DD27 EE06 EE28                       EE29

Claims (6)

[Claims] 1. A hair treatment agent comprising a ceramide and a cationic surfactant. 2. The hair treatment agent according to claim 1, wherein the ceramide is ceramide 2 or ceramide 6. 3. The hair treatment agent according to claim 1, wherein the ceramide is ceramide 2. 4. The hair treatment agent according to claim 1, wherein the cationic surfactant is an alkyl tertiary amine salt. 5. A cationic surfactant content of 0.1 to 5.
0%, and the content of ceramide is 0.002% to 0.5%
The hair treatment agent according to any one of claims 1 to 3, wherein 6. The hair treatment agent according to any one of claims 1 to 5, which has an effect of improving damaged hair.