JP6619553B2 - First agent for hair deformation and hair deformation treatment method - Google Patents

Description

  The present invention relates to a first hair deformation agent used in the process of hair deformation treatment including a step of bringing a heating element such as a high-temperature iron into contact with hair, and a hair deformation treatment method using the first agent.

  In the hair deformation treatment that brings the hair shape closer to a wave shape or a straight shape, the first agent for hair deformation containing a reducing agent is used, and the cleavage of the cystine bond in the hair by the reducing agent enables the hair shape to be deformed. To do. In the process of hair deformation treatment, the hair may be warmed. For the purpose of promoting the penetration of the first hair deformation agent into the hair, the hair to which the first hair deformation agent is applied is heated to 60 ° C. or lower. Methods for warming are known. In addition, the hair may be brought into contact with a higher temperature heating element, and the hair after washing away the first hair deformation agent is heated with a heating element such as a rod of 70 ° C. or higher or a hair iron of 100 ° C. or higher. Methods are also known.

  The above heating may increase the damage to the hair, and the higher the heating temperature, the higher the possibility that the hair will be damaged. And since the touch of hair deteriorates by damage, the proposal which suppresses the deterioration is made | formed. For example, Patent Document 1 discloses a curly hair straightening process that uses a hair iron, which is a type of hair deformation process, and is intended to improve the moist feeling and softness of the hair when this process is performed. It is disclosed that gluconic acid and trehalose are added to the first orthodontic agent.

JP 2004-26770 A

  As described above, softness may be required for the feel of hair that has been subjected to hair deformation treatment involving high-temperature heating. Also, a smooth feel on the hair surface may be required.

  In view of the above circumstances, the present invention uses the first agent for deforming hair, which is excellent in the feel of softness and smoothness, and the first agent, when the hair is deformed with high-temperature heating. An object of the present invention is to provide a hair deformation treatment method.

  As a result of intensive studies by the inventor, when hair deformation treatment involving high-temperature heating is performed, if the first agent for hair deformation containing trehalose and a chelating agent is used together with a specific reducing agent, hair feel Has been found to be excellent in softness and smoothness, and the present invention has been completed.

  That is, the first agent for deforming hair according to the present invention is a reduction step, and a heating step in which the hair after the reduction step is brought into contact with a heating element at 70 ° C. or higher, in the reduction step in the hair deformation treatment method. One or two or more reducing agents selected from thioglycolic acid, cysteamine, sulfurous acid, and salts thereof, trehalose, and a chelating agent are blended.

  Further, the hair deformation treatment method according to the present invention is a hair deformation treatment comprising one or more reducing agents selected from thioglycolic acid, cysteamine, sulfurous acid, and salts thereof, trehalose, and a chelating agent. It is characterized by comprising a reduction step of applying one agent to the hair and a heating step of bringing the hair after the reduction step into contact with a heating element of 70 ° C. or higher.

  According to the present invention, before the hair is brought into contact with the heating element, the first hair deformation agent containing trehalose and a chelating agent together with a predetermined reducing agent is applied to the hair. Excellent smoothness.

Based on an embodiment of the present invention, the present invention will be described below.
(1st agent for hair deformation)
The first agent for deforming hair according to this embodiment (hereinafter, the “first agent for deforming hair” may be referred to as “first agent”) includes a reducing agent, trehalose, and a chelating agent mixed with water. (The amount of water is, for example, 60% by mass). In addition to the known first agent, the first agent of the present embodiment may be blended with an alkali agent, or a raw material blended with the known first agent may be blended as an optional raw material. .

Reducing agent In the first agent of the present embodiment, one or more selected from the reducing agents blended in the known first agent may be blended. Examples of the reducing agent include known reducing agents having a thiol group. For example, thioglycolic acid, thioglycolate (such as ammonium thioglycolate, monoethanolamine thioglycolate), cysteamine, cysteamine salt (cysteamine hydrochloride) Salt), cysteine (L-cysteine, DL-cysteine, etc.), cysteine salt (L-cysteine hydrochloride, DL-cysteine hydrochloride, etc.), acetylcysteine (N-acetyl-L-cysteine, etc.), glyceryl thioglycolate Thiolactic acid, thiolactate, and butyrolactone thiol. Examples of other known reducing agents include sulfites (such as sodium sulfite).

  The blending amount of the reducing agent in the first agent of the present embodiment may be appropriately set, and is, for example, 2% by mass to 15% by mass.

  In the first agent of this embodiment, one or more selected from thioglycolic acid, cysteamine, sulfurous acid, and salts thereof are blended as an essential reducing agent. When blending this essential reducing agent, the blend of trehalose and chelating agent gives the hair a soft and smooth feel.

  The blending amount of the essential reducing agent in the first agent of the present embodiment may be appropriately set, and is, for example, 2% by mass or more and 15% by mass or less. When the essential reducing agent and a reducing agent other than the reducing agent are blended, the blending amount of the essential reducing agent is preferably increased.

Trehalose The blending amount of trehalose in the first agent of the present embodiment is, for example, from 0.1% by mass to 5% by mass, preferably from 0.2% by mass to 2% by mass, and from 0.2% by mass to 1% by mass. % Or less is preferable. When it is 0.1% by mass or more, it is suitable for improving the moisturizing feeling of the hair, and when it is 5% by mass or less, it is suitable for improving the soft feel of the hair.

Chelating agent The first agent of this embodiment may be blended with one or more selected from the chelating agents blended in the known first agent. Examples of the chelating agent include edetic acid, edetate (disodium edetate, trisodium edetate, tetrasodium edetate, dipotassium edetate, etc.), diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetate (diethylenetriaminepentaacetic acid pentacetate). Sodium), ethylenediamine hydroxyethyl triacetate, ethylenediamine hydroxyethyl triacetate (such as ethylenediaminehydroxyethyl triacetate), hydroxyethane diphosphonic acid, hydroxyethane diphosphonate (such as tetrasodium hydroxyethane diphosphonate) Can be mentioned. In order to improve the moisturizing feeling of the hair, it is preferable to add hydroxyethane diphosphonic acid or hydroxyethane diphosphonate.

The blending amount of the chelating agent in the first agent of the present embodiment is, for example, 0.05% by mass or more and 2% by mass or less, preferably 0.1% by mass or more and 1% by mass or less, and 0.1% by mass or more and 0.0% by mass or less. 4 mass% or less is preferable. If it is 0.05 mass% or more, suitable for a good child moisturizing feeling of the hair, if it is 2 wt% or less, suitable to improving the soft feel of the hair.

Alkaline agent The 1st agent of this embodiment is mix | blended with the 1 type (s) or 2 or more types of the alkali agent for adjusting pH to the alkali side as needed. Examples of the alkali agent include ammonia, amino alcohol (monoethanolamine, triethanolamine, isopropanolamine, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol. ), Basic amino acids (such as arginine), morpholine, carbonates (such as ammonium carbonate, ammonium bicarbonate, sodium carbonate, sodium bicarbonate), phosphates (such as ammonium monohydrogen phosphate, sodium monohydrogen phosphate), And caustic (potassium hydroxide, sodium hydroxide).

Arbitrary raw materials In the first agent of the present embodiment, those appropriately selected from known raw materials for the first agent are arbitrarily blended as described above. This optional raw material includes nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, polymer compounds, silicones, hydrocarbons, waxes, higher alcohols, polyhydric alcohols, fatty acids, fats and oils, ester oils, Proteins, amino acids, anti-inflammatory agents, preservatives, fragrances and the like.

  The dosage form of the first agent of this embodiment is not particularly limited as described later, but it may be creamed by blending a higher alcohol and a cationic surfactant.

  The higher alcohol may have 14 to 22 carbon atoms, for example, linear saturated alcohols such as myristyl alcohol, cetyl alcohol, stearyl alcohol, aralkyl alcohol, and behenyl alcohol; Saturated alcohols; branched saturated alcohols such as hexyl decanol, octyl decanol, isocetyl alcohol, isostearyl alcohol; One or two or more higher alcohols may be blended. The blending amount of the higher alcohol in the first agent of the present embodiment is, for example, 2% by mass or more and 6% by mass or less.

  Examples of the cationic surfactant include dilong alkyl dimethyl ammonium salts such as distearyl dimethyl ammonium chloride, dicetyl dimethyl ammonium chloride and dicocoyl dimethyl ammonium chloride; behenyl trimethyl ammonium chloride, behenyl trimethyl ammonium methosulfate, chloride Mono long-chain alkyltrimethylammonium salts such as stearyltrimethylammonium bromide, stearyltrimethylammonium bromide, cetyltrimethylammonium bromide; and long-chain alkoxyalkyltrimethylammonium salts such as stearoxypropyltrimethylammonium chloride. One or two or more cationic surfactants may be blended, and the blending amount of the cationic surfactant in the first agent of the present embodiment is, for example, 1% by mass or more and 5% by mass or less.

Dosage Form The form of use of the first agent of this embodiment is not particularly limited, and examples thereof include liquid, cream, and gel. In order to prevent the first agent applied to the hair from flowing down, a cream or gel is good.

Viscosity The viscosity of the first agent of the present embodiment is not particularly limited. The viscosity is preferably 2000 mPa · s or more, preferably 4000 mPa · s or more, more preferably 8000 mPa · s or more, and still more preferably 10,000 mPa · s or more in order to suppress the flow-off from the hair. Further, in order to increase the permeability of the first agent into the hair, the viscosity is preferably 30000 mPa · s or less, preferably 25000 mPa · s or less, and more preferably 20000 mPa · s or less. In addition, the viscosity in this embodiment employ | adopts the value after 60 second measured at 25 degreeC using the rotor selected according to the viscosity in the B-type viscometer.

pH
The pH of the first agent of the present embodiment is preferably 8.0 or more and 10.0 or less, for example, at 25 ° C.

(Second agent for hair deformation)
In the hair deformation treatment using the first agent of the present embodiment, the second agent for deforming hair in which an oxidizing agent is blended (hereinafter, “second agent for deforming hair” may be referred to as “second agent”). It is preferred to use. The 2nd agent of this embodiment is good in it being a well-known 2nd agent according to hair deformation processing.

  The second agent of the present embodiment is one in which an oxidizing agent is blended in water (typical as the second agent of the present embodiment is a blending amount of water of 75% by mass or more). . Moreover, you may mix | blend the raw material mix | blended with the known 2nd agent as an arbitrary raw material with the 2nd agent of this embodiment.

Oxidizing agent The oxidizing agent blended in the second agent of this embodiment is preferably a bromate (sodium bromate, potassium bromate, etc.) or hydrogen peroxide, as in the known second agent.

Arbitrary raw materials As described above, the second agent of the present embodiment is arbitrarily blended with materials appropriately selected from known second agent raw materials. This optional raw material includes nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, polymer compounds, silicones, hydrocarbons, waxes, higher alcohols, polyhydric alcohols, fatty acids, fats and oils, ester oils, Proteins, amino acids, chelating agents, anti-inflammatory agents, preservatives, fragrances and the like.

  The dosage form at the time of use of the 2nd agent of this embodiment is not specifically limited, For example, liquid form, cream form, and foam form (foam form) are mentioned.

pH
The pH of the second agent of the present embodiment is, for example, 5.0 or more and 7.5 or less at 25 ° C. when the bromate is blended. The pH of the second agent of the present embodiment is, for example, 2.5 or more and 3.5 or less at 25 ° C. when hydrogen peroxide is blended.

(Hair deformation treatment)
The hair deformation treatment of the present embodiment includes a reduction process for applying the first agent of the present embodiment to the hair, and a heating process for heating the hair after the reduction process. In addition, the oxidation of the hair after the heating step may be air oxidation without contacting the drug, but according to the oxidation step of applying the second agent of this embodiment to the hair, the degree of hair deformation is Rise.

Reduction process In the reduction process in the hair deformation treatment of the present embodiment, the first agent of the present embodiment is applied to the hair and left at room temperature or 60 ° C. or less. The standing time at this time has a tendency that the longer the hair is softened, for example, 10 minutes or more and 20 minutes or less.

Heating Step In the heating step in the hair deformation treatment of the present embodiment, after the first agent of the hair after the reduction step is washed away, the heating element of 70 ° C. or higher and the hair are brought into contact with each other. The contact uses a known hair iron to stretch the hair and bring the shape closer to a straight line, a rod to make the hair shape wavy, and a curling iron to make the hair shape curled or wavy. It is good to do.

  Hair irons for bringing the hair shape closer to a straight line are known as “ADST Premium DS” manufactured by Hakko Co., Ltd. and “VSI-1009 / PJ” manufactured by Koizumi Seiki Co., Ltd. In this hair iron, a pair of opposing metal plates are provided as heating elements. And when using a hair iron, as is well known, the dried or almost dried hair is sandwiched between opposing heating elements, and then the hair iron is moved and pinched while maintaining the state of sandwiching the hair. Slip your hair.

  The set temperature of the heating element of the hair iron is 70 ° C. or higher, preferably 80 ° C. or higher, preferably 100 ° C. or higher, more preferably 140 ° C. or higher, and 160 ° C. or higher in order to efficiently deform the shape of the hair. Is more preferable. On the other hand, the set temperature of the heating element is preferably 230 ° C. or lower, preferably 210 ° C. or lower, more preferably 200 ° C. or lower, and even more preferably 190 ° C. or lower in order to suppress hair damage.

  A rod for making the hair shape into a wave shape is provided in a known device, such as “ODIS EX” manufactured by Daihiro Seisakusho. The rod is wound with wet hair, and then the contact surface of the hair on the rod is raised to a predetermined temperature. In general, the hair is dried by the heat of the rod.

  The set temperature of the rod is 70 ° C. or higher and 80 ° C. or higher in order to efficiently deform the hair shape. On the other hand, the upper limit of the set temperature of the rod is preferably 100 ° C., which is a temperature for drying hair.

  A curling iron for making the hair shape curl or wave is known as “Digital Perming” manufactured by HAKKO. This curling iron is used by setting the temperature of the heating element to, for example, 140 ° C. or more and 190 ° C. or less.

Oxidation process In the oxidation process in the hair deformation treatment of the present embodiment, the second agent of the present embodiment is applied to the hair and left standing. The leaving time at this time is, for example, not less than 3 minutes and not more than 15 minutes. The hair after standing is preferably washed and dried.

  EXAMPLES Hereinafter, although this invention is explained in full detail based on an Example, this invention is not interpreted limitedly based on description of this Example.

(Examples 1-3, Comparative Examples 1-3, Reference Examples 1-2)
As a 1st agent of Examples 1-3, Comparative Examples 1-3, and Reference Examples 1-2, a common component (details are mentioned later), ammonium thioglycolate, cysteamine hydrochloride, anhydrous sodium sulfite, L-cysteine hydrochloride , Trehalose, diethylenetriaminepentaacetic acid pentasodium, dithiodiglycolate diammonium, and ammonium hydrogen carbonate were mixed with water at the blending concentrations shown in Tables 1 to 4 below, and monoethanolamine at pH 9.3 The cream-like thing adjusted to was manufactured.

  The common components in the following Tables 1 to 4 are those in which a raw material and water are blended, and the raw material and blending concentration are 0.2% by mass of dicetyl phosphate, 1% by mass of polyoxyethylene cetyl ether phosphoric acid, and polyoxyethylene. Cetyl ether 0.5% by mass, stearyltrimethylammonium chloride 2% by mass, cetostearyl alcohol 6% by mass, 1,3 butylene glycol 1% by mass, glycerin 1% by mass, paraffin 0.2% by mass, beeswax 0.2% by mass , Soft lanolin fatty acid cholesteryl 0.1% by mass, urea 0.3% by mass, highly polymerized methylpolysiloxane 0.1% by mass, aminoethylaminopropylsiloxane / dimethylsiloxane copolymer 0.1% by mass, fragrance 0.1 It was set as mass%.

(Hair deformation treatment A)
A hair bundle of about 25 cm having an oxidative hair dyeing history of about 2 g was washed and wiped with a towel, and then hair deformation treatment A having a reduction step, a heating step, and an oxidation step was performed. In the reduction step, the first agent of any one of Examples 1 to 3, Comparative Examples 1 to 3, and Reference Examples 1 to 2 was applied to the hair bundle, passed through the comb through the hair bundle, and left at room temperature for about 20 minutes. In the heating process, the hair bundle after the reduction process, in which the first agent is washed away with warm water and dried with warm air, is treated, and a hair iron (“ADST Premium DS Professional Straight Hair Iron ADST Premium DS (FDS manufactured by Hakko Co., Ltd.)” is used. The temperature of the pair of heating elements in −25) ”) was set to 180 ° C., the hair bundle was sandwiched between the heating elements, and the hair bundle was slid while being stretched. In the oxidation step, a second agent (details will be described later) was applied to the hair bundle and left at room temperature for about 5 minutes. The left hair bundle was washed with warm water and dried with warm air.

  The 2nd agent in the said hair deformation process A mix | blends a raw material and water, The raw material and a mixing | blending density | concentration are hydrogen peroxide 2 mass%, sodium monohydrogen phosphate 1 mass%, phosphoric acid 0.3. % By mass, 0.2% by mass of phenoxyethanol, 0.1% by mass of hydroxyethane diphosphonic acid, and 0.1% by mass of diethylene glycol monoethyl ether. The pH was 3.0.

(Evaluation)
About the hair bundle which performed the said hair deformation process A, evaluation between hair bundles was performed by four evaluators. The evaluation was performed for each table in Tables 1 to 4 below, and was compared with a standard hair bundle defined in each table. The significance of the evaluation results was as follows.
A: Very better than the standard (3 or more people evaluated it as better than the standard)
○: Better than standard (2 or more people evaluated it as better than standard)
―: Equivalent to the standard (less than 1 person evaluated it better than the standard)
X: worse than standard (2 or more people evaluated it as bad)

The results of the evaluation are shown in Tables 1 to 4 below.

  According to the above Tables 1-3, when thioglycolate, cysteamine salt, or sulfite is blended as a reducing agent, it is recognized that the softness and smoothness were improved by blending trehalose. On the other hand, according to Table 4, when the reducing agents in Tables 1 to 3 above were not blended and a cysteine salt was blended, improvement in softness and smoothness due to trehalose blending was not recognized.

(Examples 4 to 6, Comparative Examples 4a to 4c, Comparative Examples 5a to 5c, Comparative Examples 6a to 6c)
As the first agent of Examples 4 to 6, Comparative Examples 4a to 4c, Comparative Examples 5a to 5c, and Comparative Examples 6a to 6c, common components (same as common components in Example 1), ammonium thioglycolate, L- Raw materials selected from cysteine hydrochloride, trehalose, tetrasodium edetate tetrahydrate, pentasodium diethylenetriaminepentaacetate, hydroxyethanediphosphonic acid, diammonium dithiodiglycolate, and ammonium bicarbonate are listed in Tables 5-7 below. The cream-like thing which mix | blended with water by the mixing | blending density | concentration of and adjusted to pH8.9 with monoethanolamine was manufactured.

(Hair deformation treatment B)
The hair deformation process B was performed using the first agent of any of Examples 4 to 6, Comparative Examples 4a to 4c, Comparative Examples 5a to 5c, and Comparative Examples 6a to 6c. This treatment was performed in the same manner as the hair deformation treatment A.

  The hair bundle subjected to the hair deformation treatment B was evaluated (this evaluation was the same as the hair bundle subjected to the hair deformation treatment A except that the number of evaluators was five). The results are as shown in Tables 5 to 6 below.

  In the evaluation result 1 of Comparative Example 4a and Comparative Example 4b in Table 5, when there is no blending of a chelating agent, improvement in softness and smoothness due to trehalose is not recognized. However, in the evaluation result 2 of Comparative Example 4c and Example 4, when a chelating agent is blended, improvement in softness and smoothness due to trehalose is recognized. Improvements in softness and smoothness due to the blending of trehalose when premised on the blending of the chelating agent are also observed in Tables 6-7.

(Example 7, Comparative Example 7)
As the first agent of Example 7, a raw material and water were blended, and a product adjusted to pH 8.9 using monoethanolamine and arginine was produced. The raw materials and blending concentrations were 4% by mass of ammonium thioglycolate, 4% by mass of monoethanolamine thioglycolate, 0.4% by mass of L-cysteine hydrochloride, 1% by mass of trehalose, 0.2% by mass of diethylenetriaminepentaacetic acid pentasodium. %, Diammonium dithiodiglycolate 3% by mass, cetostearyl alcohol 4% by mass, stearyltrimethylammonium chloride 2% by mass, dicetyl phosphate 1% by mass, polyoxyethylene cetyl ether 2% by mass, polyoxyethylene cetyl ether 1% by weight, 1.3% by weight of butylene glycol, 1% by weight of paraffin, 1% by weight of beeswax, 0.1% by weight of soft lanolin fatty acid cholesteryl, 0.3% by weight of highly polymerized methylpolysiloxane, aminoethylaminopropylsiloxane Dimethylsiloxane co Combined 0.1 wt%, and 0.1 wt% perfume. Moreover, the 1st agent of the comparative example 7 from which the presence or absence of trehalose differs from the 1st agent of Example 7 was manufactured.

(Hair treatment C)
A hair bundle of about 25 cm having a history of oxidative hair dyeing treatment of about 2 g was washed and wiped with a towel, and then hair deformation treatment C having a reduction step, a heating step, and an oxidation step was performed. In the reduction step, the first agent of Example 7 or Comparative Example 7 was applied to the hair bundle and allowed to stand at room temperature for about 10 minutes. In the heating process, the hair bundle after the reduction process in which the first agent is washed away with warm water is treated, and the hair bundle is wound around the rod and then left at a rod temperature of 90 ° C. for 10 minutes (the hair bundle after being left is It was dry). In the oxidation step, the same second agent as in Hair Treatment A was applied to the hair bundle and left at room temperature for about 5 minutes. The left hair bundle was washed with warm water and dried with warm air.

  As a result of evaluating the feel of the hair bundle after performing the hair treatment C, it was found that the use of the first agent in Example 7 was superior in the softness and smoothness of the hair. That is, the compound containing the chelating agent and trehalose was excellent in the softness and smoothness of the hair.

Claims (4)

A first step for hair deformation applied to the hair in the reduction step in the hair deformation treatment method comprising: a reduction step; and a heating step of bringing the hair after the reduction step into contact with a heating element of 70 ° C. or higher,
One or more reducing agents selected from thioglycolic acid, cysteamine, sulfurous acid, and salts thereof, trehalose, and edetic acid, edetate, diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetate, ethylenediaminehydroxyethyltriacetic acid And one or more chelating agents selected from ethylenediamine hydroxyethyl triacetate are blended ,
The amount of trehalose is 5% by mass or less,
1st agent for hair deformation characterized by the compounding quantity of the said chelating agent being 2 mass% or less .   The first agent for hair deformation according to claim 1, wherein the heating element is 80 ° C or higher and 230 ° C or lower. The first agent for hair deformation of claim 1 or 2 the amount of the chelating agent is the 0.05% by mass or. One or more reducing agents selected from thioglycolic acid, cysteamine, sulfurous acid, and salts thereof, trehalose, and edetic acid, edetate, diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetate, ethylenediaminehydroxyethyltriacetic acid And a reduction step of applying to the hair a first agent for deforming hair that is blended with one or more chelating agents selected from ethylenediamine hydroxyethyl triacetate, and
A heating step of bringing the hair after the reduction step into contact with a heating element of 70 ° C. or higher;
Equipped with a,
The amount of trehalose in the first agent for deforming hair is 5% by mass or less,
It said hair deformation processing method amount of the chelating agent in the first agent is characterized der Rukoto 2 mass% for hair deformation.