JP2019123702A - Hair treatment agent - Google Patents

Abstract

To provide a hair treatment agent and a hair treatment method that do not use a reductant or an oxidizing agent that fade a hair color and damage the hair, and overcome the drawbacks of the hair treatment agent containing glyoxylic acid that fades a hair color.SOLUTION: A hair treatment agent contains (a) glyoxylic acid of 10-25 mass% and (b) polyalcohol of 45 mass% or more, with the total content of glyoxylic acid and polyalcohol being 65 mass% or more and the pH ranging from 1.0 to 3.0. A hair treatment method includes the steps of (1) applying the hair treatment agent to hair, (2) letting the hair treated with the hair treatment agent stand for a while so that the hair treatment agent sufficiently permeates the hair, (3) washing the hair with water to rinse the hair treatment agent, and (4) drying the hair and making it straight.SELECTED DRAWING: None

Description

  TECHNICAL FIELD The present invention relates to a hair treatment agent which is capable of extending (suppressing squeeze) while suppressing fading of a hair color with respect to hair colored squeezed hair or waviness, without containing a reducing agent or an oxidizing agent. In addition, the present invention also relates to a hair treatment method capable of extending the hair (suppressing peculiarity) while suppressing the fading of the hair color without damaging the hair by using the hair treatment agent.

  A common hair straightener can stretch the hair (inhibit the habit) by the action of the main component reducing agent, oxidizing agent and mechanical treatment at high temperature. Specifically, a first agent containing a reducing agent such as thioglycolic acid or a salt thereof, cysteamine or a salt thereof, and an alkali agent such as aqueous ammonia, monoethanolamine, or ammonium hydrogencarbonate is applied to the hair, Disulfide bonds present in keratin proteins are reductively cleaved, and the hair is straightened by mechanical treatment at high temperature, and then treated with a second agent based on an oxidizing agent such as hydrogen peroxide or sodium bromate Then, the disulfide group is oxidized and reformed to fix the hair straight.

  However, the actions of reducing agents and oxidizing agents often cause hair damage as well as fading the hair color, and the feel of the hair worsens with the passage of time after the treatment, and the texture of the hair It will decrease. For this reason, there is a demand for development of a treatment for hair coloring hair which can elongate (reduce the peculiarity) hair with lash hair and waviness without containing a reducing agent and an oxidizing agent. .

  As a hair treatment agent which does not contain a reducing agent or an oxidizing agent, a method using glyoxylic acid as a hair correction component has been proposed. For example, Patent Document 1 discloses a method in which a solution containing glyoxylic acid is applied to hair and left to stand to dry the hair, and then the hair is corrected at about 200 ± 50 ° C. by a hair straightening iron. In this method, the hair can be corrected semipermanently while suppressing the damage to the hair, but when it is applied to the lashed hair or the hair having a hair color, the hair color is discolored. Furthermore, in Patent Document 2, a solution of pH 1.0 to 2.5 containing 15.0 to 25.0% by mass of glyoxylic acid and a guanidine salt and / or urea is applied to hair and left to stand, water washing, hair After drying, a method of straightening the hair at 140-200.degree. C. with a hair setting iron is disclosed. Even with this method, it is possible to correct the hair while suppressing the damage to the hair, but when it is applied to the peculiar hair having the hair color and the hair having the waviness, the hair color is discolored.

Patent No. 6122942 Patent No. 5947340

  The present invention has been made in view of the above-mentioned disadvantages of the prior art, and it comprises a glyoxylic acid-containing hair treatment for fading the hair color, without using a reducing agent or an oxidizing agent which causes the hair color to be bleached and damaged. It is an object of the present invention to provide a hair treatment agent and a hair treatment method, in which the disadvantages of the agent are eliminated.

  As a result of intensive studies to solve the above-mentioned problems, the present inventor contains a specific amount of glyoxylic acid and a polyhydric alcohol, and adjusts the pH to a range of 1.0 to 3.0 to obtain a reducing agent. Eliminates the defects of glyoxylic acid that fades the hair color regardless of the oxidant or oxidizing agent, and suppresses the fading of the hair color while extending the hair coloring effect to the hair color with squeezed hair and wavy hair. It has been found that it can be realized and the present invention has been completed.

That is, the hair treatment agent of the present invention is
(A) 10 to 25% by mass of glyoxylic acid,
(B) 45% by mass or more of polyhydric alcohol,
And the total content of glyoxylic acid and polyhydric alcohol is at least 65% by mass,
It is characterized in that the pH is in the range of 1.0 to 3.0.

Moreover, the hair treatment method of the present invention is
(1) applying the hair treatment agent to hair,
(2) a step of leaving the hair,
(3) washing the hair,
(4) After drying the hair, straighten with a hair styling or hair straightening iron with a surface temperature of 140 to 220 ° C, or straighten with a brush etc while drying the hair, or, surface temperature of the hair is Make it dry while making straight with hair setting or hair straightening iron at 100-220 ° C, or make it straight with brush etc while drying the hair, and make it straight with hair setting or hair straightening iron with surface temperature of 140-220 ° C. The process to
It is characterized by being.

  The hair treatment agent according to the present invention can stretch (reduce the peculiarity) while suppressing the damage and the discoloring of the hair color which have the peculiar hair and the undulation of the hair color.

Hair treatment agent
The hair treatment agent of the present invention essentially contains (a) glyoxylic acid and (b) polyhydric alcohol. Hereinafter, the present invention will be described in detail.

  The blending amount of glyoxylic acid is 10 to 25% by mass, preferably 15 to 20% by mass, with respect to the total amount of the hair treatment agent of the present invention. If the compounding amount is less than 10% by mass, a sufficient hair extension effect can not be obtained. On the other hand, even if it is added in excess of 25% by mass, improvement of the hair extension effect commensurate with the compounding amount can not be expected.

As polyhydric alcohols, glycols such as ethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, 1,3-butylene glycol, etc., glycerins such as glycerin, diglycerin and polyglycerin, pentylene Alkanediols such as glycol, hexanediol and caprylyl glycol, and sugar alcohols such as sorbitol and mannitol. Preferred are glycols and glycerins.
The blending amount of polyhydric alcohol is 45% by mass or more with respect to the total amount of the hair treatment agent of the present invention, and the total amount of blending amounts of glyoxylic acid and polyhydric alcohol is 65% by mass or more. Preferably, the combined amount of glyoxylic acid and polyhydric alcohol is 75% by mass or more, and improvement of the hair extension effect and the color fading inhibition effect corresponding to the blended amount of polyhydric alcohol can be observed. If the blending amount of the polyhydric alcohol is less than 45% by mass and / or the total amount of the blending amounts of the glyoxylic acid and the polyhydric alcohol is less than 65% by mass, it is impossible to obtain a sufficient hair color fading suppressing effect.

  The hair treatment agent according to the present invention can optionally contain other components generally used for cosmetics, medicines and the like in addition to glyoxylic acid and polyhydric alcohol, as long as the effects of the present invention are not impaired. Such components include, for example, cationic polymers, anionic polymers, nonionic polymers, amphoteric polymers, saccharides, amino acids, peptides, proteins, sequestering agents, oils, powder components, cationic surfactants, anions A surfactant, a nonionic surfactant, an amphoteric surfactant, a pH adjuster, a thickener, a powder component, a fragrance, a powder component, a pigment, water, and the like can be contained.

The hair treatment agent of the present invention is required to maintain the pH in the range of 1.0 to 3.0, preferably in the range of 1.3 to 2.2. If the pH is less than 1.0, the astringent action of the hair may cause damage to the hair, while if the pH exceeds 3.0, a sufficient hair stretching effect of the hair can not be obtained.
The alkaline agent for adjusting the pH of the hair treatment agent to the above range is not particularly limited, but an inorganic base such as sodium hydroxide or potassium hydroxide, triethanolamine or isopropanolamine, a basic amino acid, etc. Of organic bases can be used.

  The dosage form of the hair treatment agent according to the present invention is not particularly limited as long as the desired effects can be sufficiently exhibited, but, for example, a dosage form such as liquid, emulsion, gel, foam or cream may be used. sell.

<Hair treatment method>
The hair treatment method of the present invention comprises (1) applying the above-mentioned hair treatment agent to hair and (2) leaving the hair in the applied state to allow the hair treatment agent to fully act on the hair and (3) washing the hair And (4) drying and straightening the hair.

<(1) Coating process>
The hair treatment agent of the present invention can be applied to dry hair straightened with hair straightening or hair straightening or blowing, but since the hair treatment agent easily penetrates the hair, the hair treatment agent may be applied immediately after the hair color treatment. Wet hair, wet hair washed with shampoo in advance and drained, towel-dried hair with attached moisture removed with towel, wet hair coated with water or highly reduced alkaline water, steam, mist, superheated steam, pressurization It is preferable to apply to hair treated with superheated steam or the like.
<(2) Leaving process>
After application of the hair treatment agent, the hair treatment agent is allowed to act on the hair by standing at room temperature (about 25 ° C.) or heating for 10 to 40 minutes, more preferably for 15 to 25 minutes. If the standing time is less than 10 minutes, a sufficient stretching effect of the hair can not be obtained. On the other hand, even if the standing time exceeds 40 minutes, further improvement of the hair stretching effect corresponding to the standing time can not be expected.

<(3) Washing process>
Rinse the hair with hot water and wash the hair care agent thoroughly from the hair. Washing away the hair treatment agent from the hair facilitates subsequent drying and handling of the hair.
<(4) Step of drying and straightening hair>
After washing with water, the moisture is wiped off with a towel, and after drying the hair with a hair dryer, the mechanical force and heat are applied to the hair with a hair styling or hair straightening iron whose surface temperature is heated to 140 to 220 ° C, preferably 180 to 200 ° C. Straighten while adding, or straighten with a brush etc. while drying the hair with a hair drier, or with a hair styling or hair straightening iron with a surface temperature of 100-220 ° C., preferably 120-180 ° C. The hair is straightened, or the hair is dried with a hair drier and straightened with a brush or the like, and the surface temperature is further heated to 140 to 220 ° C., preferably 180 to 200 ° C. Make it straight while applying force and heat.

  Hereinafter, the present invention will be described in more detail by way of specific examples, but the present invention is not limited to the following examples. Moreover, unless otherwise indicated, the compounding quantity in a following example etc. shows the mass%.

  Hereinafter, the present invention will be described in more detail by way of specific examples, but the present invention is not limited to the following examples. Moreover, unless otherwise indicated, the compounding quantity in a following example etc. shows the mass%.

(Examples 1 to 19 and Comparative Examples 1 to 7)
A hair treatment agent having the composition listed in Table 1 below is prepared by stirring and mixing each component in purified water until it becomes uniform, and sodium hydroxide is added to adjust the pH to 1.7. did.
The hair extension effect of the obtained hair treatment agent and the fading suppressing effect of the hair color were evaluated by the following methods.

<Evaluation of hair stretching effect>
A natural bunched hair (Indian black hair) was cut so as to have a length of 15 cm when stretched to make a hair bundle weighing 1 g. Next, each hair bundle is washed with a commercially available shampoo, and then decolorized once with a commercially available bleach, and then dyed with 8 levels of ash system (a bluish color), and the hair bundle with water removed is tested It was hair. 1 g of the prepared hair treatment agent is applied and left at room temperature (about 25 ° C.) for 20 minutes. After that, wash the hair treatment agent thoroughly with hot water.
The hair bundle was wiped off with a towel and dried with a drier, and a hair straightening iron heated to 180 ° C. was pressed for 2 seconds to straighten the hair. After fixing one end of this hair bundle and suspending it vertically and leaving it to stand at room temperature for 24 hours, three persons having 10 or more years of beautician experience evaluated the hair extension effect by the following evaluation criteria.
<Evaluation criteria>
1. There is a peculiarity left and it is not well organized.
2. There are a few remaining habits, and the organization is somewhat bad.
3. The habit is slightly left, but it is well organized.
4. The habit is almost extended and it is well organized.
5. The habit is growing and it has good gloss and consistency.
6. The habit is growing, and the gloss is very good.

<Evaluation of hair color fading suppression effect>
The hair tress used in the evaluation of the hair extension effect was compared with the reference hair tress, and three persons having 10 or more years of beautician experience evaluated the hair color fading inhibitory effect according to the following evaluation criteria.
The reference hair bundle was prepared according to the following procedure.
A natural bunched hair (Indian black hair) was cut so as to have a length of 15 cm when stretched to make a hair bundle weighing 1 g. Next, wash the hair bundle with a commercially available shampoo, then decolorize it with a commercially available bleach, dye it with 8 levels of ash system (a bluish color), and wipe the hair bundle water with a towel. The hair was straightened by pressing a hair straightening iron heated to 180 ° C. for 2 seconds. One end of this hair bundle was fixed and hung vertically, and left at room temperature for 24 hours.
<Evaluation criteria>
1. The color is different.
2. There is a difference in color, I feel the difference.
3. There is a slight difference in color but there is no problem in practical use.
4. There is only a slight difference in color.
5. There is almost no difference in color.

  As shown in Examples 1 to 19, it contains 20 to 50% by mass of a 50% aqueous solution of glyoxylic acid, that is, 10 to 25% by mass of glyoxylic acid in pure portion, and 45% by mass or more of polyhydric alcohol And when the total amount of the content of glyoxylic acid and a polyhydric alcohol used 65 mass% or more of hair treatment agents, sufficient hair extension effect and hair color fading inhibitory effect were acquired. On the other hand, as shown in Comparative Examples 1 to 7, when the blending amount of glyoxylic acid and polyhydric alcohol is out of the above range, the hair stretching effect and / or the hair color fading suppressing effect is insufficient. The

(Examples 20 to 26 and comparative examples 8 to 10)
A hair treatment agent having the composition listed in Table 2 below was prepared by stirring and mixing each component in purified water until uniform. The amount of sodium hydroxide added was adjusted to obtain the pH described in Table 2. The hair-stretching effect and hair color fading inhibitory effect of the obtained hair treatment agent were evaluated according to the above-mentioned criteria.

  As shown in Examples 20 to 26, when the hair treatment agent whose pH is adjusted to a range of 1.0 to 3.0 was used, a sufficient hair stretching effect and a hair color fading suppressing effect were obtained. On the other hand, as shown in Comparative Examples 8 to 10, when the pH was out of the above range, the hair stretching effect was insufficient.

Claims (3)

(A) 10 to 25% by mass of glyoxylic acid,
(B) 45% by mass or more of polyhydric alcohol,
And the total content of glyoxylic acid and polyhydric alcohol is at least 65% by mass,
A hair treatment agent characterized in that the pH is in the range of 1.0 to 3.0.   The hair treatment agent according to claim 1, wherein the polyhydric alcohol is glycols such as propylene glycol, dipropylene glycol, isoprene glycol and 1,3-butylene glycol, and glycerins such as glycerin, diglycerin and polyglycerin. (1) applying the hair treatment agent according to claim 1 or 2 to hair;
(2) a step of leaving the hair,
(3) washing the hair,
(4) After drying the hair, straighten with a hair styling or hair straightening iron with a surface temperature of 140 to 220 ° C, or straighten with a brush etc while drying the hair, or, surface temperature of the hair is Make it dry while making straight with hair setting or hair straightening iron at 100-220 ° C, or make it straight with brush etc while drying the hair, and make it straight with hair setting or hair straightening iron with surface temperature of 140-220 ° C. The process to
A hair treatment method characterized in that