JP7281931B2 - Hair composition and hair treatment method - Google Patents

Description

The present invention relates to a hair composition suitable for inhibiting thermal fading of dyed hair, and a hair treatment method using the composition.

Using a hair iron such as a curling iron or straightening iron facilitates the formation of a hairstyle, but heats the hair at a high temperature. Hair dyed with an oxidative hair dye or the like is known to fade when heated. In addition, even if the hair is not heated by a curling iron that contacts the hair with a heating element, when a dryer is used, especially when the dryer and the hair are used close to each other, hot air is blown onto the hair, causing color fading.

In order to suppress discoloration, for example, Patent Document 1 discloses blending a cyclohexanedicarboxylic acid diester such as cyclohexanedicarboxylic acid bisethoxydiglycol (see claim 1). However, there are few proposals for suppressing fading due to heat, and proposals for suppressing fading of hair are desired.

JP 2014-15434 A

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a hair composition for suppressing thermal fading of dyed hair, and a hair treatment method using the composition.

As a result of intensive studies by the present inventors, they have found that specific components such as a chelating agent are excellent in suppressing heat fading of dyed hair, and have completed the present invention.

That is, the composition for hair according to the present invention is applied to the hair before being heated, and contains a chelating agent, ascorbyl tetra-2-hexyldecanoate, maltitol, loquat leaf extract, almond extract, and tea leaves. It is characterized by blending one or two or more discoloration-inhibiting components selected from extracts.

The hair composition according to the present invention preferably contains a chelating agent as the discoloration suppressing component. The chelating agents to be blended include, for example, ethylenediaminetetraacetic acid, ethylenediaminetetraacetate, diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetate, ethylenediaminehydroxyethyltriacetic acid, ethylenediaminehydroxyethyltriacetate, hydroxyethanediphosphonic acid, and hydroxyethane. One or more selected from diphosphonates.

When a chelating agent is added to the composition for hair according to the present invention, the content of the chelating agent in the composition for hair is preferably 0.2% by mass or more. A compounding amount of 0.2% by mass or more is particularly excellent in suppressing discoloration.

The hair composition according to the present invention is preferably used as a styling agent or a leave-in treatment.

The heating in the present invention is performed by, for example, a hair iron. Even when the hair is directly heated with a hair iron, it is possible to suppress the fading of the hair.

The hair treatment method according to the present invention uses the hair composition according to the present invention.

According to the composition for hair according to the present invention, since specific components such as a chelating agent are blended, it is possible to suppress fading of dyed hair due to heat.

Further, according to the hair treatment method of the present invention, since the hair composition containing a specific component such as a chelating agent is used, it is possible to suppress fading of dyed hair due to heat.

The present invention will be described below based on the embodiments of the present invention.
The hair composition according to the present embodiment contains a specific component (discoloration suppressing component) for suppressing fading of hair dyed with an oxidative hair dye containing an oxidative dye. In addition, components that are blended in known hair compositions may be blended as optional components.

(Fading suppression component)
The discoloration-suppressing component of the present embodiment is one or more selected from chelating agents, ascorbyl tetra-2-hexyldecanoate, maltitol, loquat leaf extract, almond extract, and tea leaf extract.

A chelating agent has a function of binding metal ions with a plurality of ligands. Although the relationship between this function and inhibition of hair color fading is not clear, as a result, the addition of the chelating agent inhibits hair color fading. Among the discoloration-suppressing components, the blending of a chelating agent is suitable for discoloration suppression.

The amount of the chelating agent in the composition for hair of the present embodiment is preferably 0.2% by mass or more, preferably 0.4% by mass or more, more preferably 0.5% by mass or more, and 0.8% by mass or more. is more preferred. A content of 0.2% by mass or more is preferable for suppressing fading, and up to about 0.5% by mass, the rate of improvement in the effect of suppressing fading is particularly large. On the other hand, the upper limit of the compounding amount of the chelating agent is, for example, 2.0% by mass.

Examples of chelating agents include ethylenediaminetetraacetic acid, ethylenediaminetetraacetate (disodium ethylenediaminetetraacetate, trisodium ethylenediaminetetraacetate, tetrasodium ethylenediaminetetraacetate, dipotassium ethylenediaminetetraacetate, etc.), diethylenetriaminepentaacetic acid, and diethylenetriaminepentaacetate. (such as pentasodium diethylenetriamine pentaacetate), ethylenediamine hydroxyethyl triacetate, ethylenediamine hydroxyethyl triacetate (such as trisodium ethylenediamine hydroxyethyl triacetate), hydroxyethanediphosphonic acid, and hydroxyethanediphosphonate 1 or 2 or more selected from tetrasodium phosphate, etc.). The chelating agent to be blended is preferably ethylenediaminetetraacetic acid, ethylenediaminetetraacetate, diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetate, hydroxyethanediphosphonic acid, hydroxyethanediphosphonate, and ethylenediaminetetraacetic acid, ethylenediaminetetraacetate, hydroxyethane. More preferred are diphosphonic acid and hydroxyethane diphosphonate.

When one or more selected from ethylenediaminetetraacetic acid and ethylenediaminetetraacetate are blended, the blending amount of ethylenediaminetetraacetic acid and ethylenediaminetetraacetate in the hair composition of the present embodiment is 0.2% by mass or more. 0.4% by mass or more is preferable, 0.5% by mass or more is more preferable, and 0.8% by mass or more is even more preferable. A content of 0.2% by mass or more is preferable for suppressing fading, and up to about 0.5% by mass, the rate of improvement in the effect of suppressing fading is particularly large. On the other hand, the upper limit of the amount of ethylenediaminetetraacetic acid and ethylenediaminetetraacetate is, for example, 2.0% by mass.

When one or more selected from diethylenetriaminepentaacetic acid and diethylenetriaminepentaacetate are blended, the amount of diethylenetriaminepentaacetic acid and diethylenetriaminepentaacetate in the hair composition of the present embodiment is 0.2% by mass or more. 0.4% by mass or more is preferable, 0.5% by mass or more is more preferable, and 0.8% by mass or more is even more preferable. A content of 0.2% by mass or more is preferable for suppressing fading, and up to about 0.5% by mass, the rate of improvement in the effect of suppressing fading is particularly large. On the other hand, the upper limit of the amount of diethylenetriaminepentaacetic acid and diethylenetriaminepentaacetate is, for example, 2.0% by mass.

When one or more selected from hydroxyethanediphosphonic acid and hydroxyethanediphosphonate are blended, the amounts of hydroxyethanediphosphonic acid and hydroxyethanediphosphonate in the hair composition of the present embodiment is preferably 0.2% by mass or more, preferably 0.4% by mass or more, more preferably 0.5% by mass or more, and still more preferably 0.8% by mass or more. A content of 0.2% by mass or more is preferable for suppressing fading, and up to about 0.5% by mass, the rate of improvement in the effect of suppressing fading is particularly large. On the other hand, the upper limit of the amount of hydroxyethanediphosphonic acid and hydroxyethanediphosphonate is, for example, 2.0% by mass.

When ascorbyl tetra-2-hexyldecanoate is blended, the amount of ascorbyl tetra-2-hexyldecanoate in the hair composition of the present embodiment is preferably 0.05% by mass or more, preferably 0.1% by mass or more, and 0 0.5% by mass or more is more preferable, and 0.8% by mass or more is even more preferable. A content of 0.05% by mass or more is preferable for suppression of discoloration. On the other hand, the upper limit of the blending amount of ascorbyl tetra-2-hexyldecanoate is, for example, 1.0% by mass for cost reduction.

When maltitol is blended, the amount of maltitol in the hair composition of the present embodiment is preferably 0.1% by mass or more, preferably 0.5% by mass or more, more preferably 1% by mass or more. More than % by mass is more preferable. A content of 0.1% by mass or more is preferable for suppression of discoloration. On the other hand, the upper limit of the content of maltitol is, for example, 1.0% by mass for cost reduction.

When the loquat leaf extract is blended, the amount of the loquat leaf extract in the hair composition of the present embodiment is preferably 0.005% by mass or more. A content of 0.005% by mass or more is preferable for suppressing discoloration. On the other hand, the upper limit of the amount of the loquat leaf extract is, for example, 0.5% by mass for cost reduction.

When almond extract is blended, the amount of almond extract in the hair composition of the present embodiment is preferably 0.005% by mass or more. A content of 0.005% by mass or more is preferable for suppressing discoloration. On the other hand, the upper limit of the almond extract content is, for example, 0.5% by mass for cost reduction.

When the tea leaf extract is blended, the blending amount of the tea leaf extract in the hair composition of the present embodiment is preferably 0.005% by mass or more. A content of 0.005% by mass or more is preferable for suppressing discoloration. On the other hand, the upper limit of the blending amount of the tea leaf extract is, for example, 0.5% by mass for cost reduction.

(Optional component)
When a chelating agent is added to the hair composition of the present embodiment, it is preferable to add water suitable as a solvent for the chelating agent. At this time, the blending amount of water in the composition for hair of the present embodiment should be appropriately set according to the use of the composition.
For example, it is 3% by mass or more and 99% by mass or less.

In addition, components that are blended in known hair compositions may be blended as optional components in the hair composition of the present embodiment. The optional ingredients include anionic surfactants, cationic surfactants, amphoteric surfactants, alcohols, polyhydric alcohols, sugars, ester oils, fats and oils, fatty acids, hydrocarbons, waxes, silicones, polymer compounds, amino acids, animal and plant extracts. substances, substances derived from microorganisms, inorganic compounds, fragrances, preservatives, ultraviolet absorbers, and the like.

(dosage form)
The dosage form for using the composition for hair of the present embodiment is not particularly limited, and examples thereof include liquid, milky lotion, lotion, cream, wax, gel, solid, and foam. , nebulized. In the case of an emulsion, it may be either an O/W type emulsion or a W/O type emulsion.

(pH)
When water is blended, the pH of the hair composition of the present embodiment is, for example, 4.0 or more and 9.0 or less.

(Application)
The composition for hair of the present embodiment may be used either in a manner in which the composition is applied to the hair without being washed away, or in a manner in which the composition is applied to the hair and then washed off. If the composition for hair of the present embodiment is used in such a manner that it is not washed off after being applied to the hair, it is preferable because the anti-fading component will not be washed off from the hair. Hair compositions used in this leave-in mode include, for example, styling agents and leave-in treatments. Examples of the hair composition of the present embodiment used in the above-described rinse mode include shampoos, rinses, conditioners, rinse treatments, multi-component treatments, treatments for pre-perm treatments, and perm treatments. Treatment for post-treatment, treatment for pre-treatment for hair dyeing treatment, treatment for post-treatment for hair dyeing treatment, permanent hair dye (oxidative hair dye, non-oxidative hair dye), semi-permanent hair dye ( hair manicure, acid color, color rinse, color treatment).

When using the composition for hair of the present embodiment, the composition is applied to the hair before heating, and the hair is heated without or after being washed off with water. In addition, it is preferable to dry the hair before heating. If the hair is not dried, the water content, which is larger than usual, boils and may damage the hair.

When performing the above heating, it is preferable to use a known device such as a curling iron, a dryer, or a hot curler. Known curling irons include a curling iron having a bar-shaped heating element for winding hair (for example, "ion curl iron 19 mm" manufactured by Kraits Ion Co., Ltd.), and a straight iron having a pair of opposing plate-shaped heating elements (for example, Hakko Co., Ltd. "ADST Premium DS" and "VSI-1009/PJ" manufactured by Koizumi Seiki Co., Ltd.).

The heating temperature in the above heating does not mean the temperature of the hair, but the temperature outside the hair in contact with the hair. The upper limit of the heating temperature is preferably 220°C, preferably 200°C, more preferably 190°C, still more preferably 170°C, and even more preferably 150°C, in order to suppress heat damage to the hair. On the other hand, the lower limit of the heating temperature is preferably 100°C, preferably 120°C, more preferably 130°C, and still more preferably 140°C, in order to efficiently form the hair shape. Note that the higher the heating temperature, the more the hair tends to fade, but this fading can be suppressed by using the composition for hair of the present embodiment.

EXAMPLES The present invention will be described in detail below based on examples, but the present invention is not limitedly interpreted based on the description of these examples.

Hair compositions of Examples and Comparative Examples were produced, and hair was treated with these hair compositions. Details are as follows.

(Composition for hair)
Liquid hair compositions of Examples 1a to 1d, Examples 2a to 2c, Examples 3a to 3f, and Examples 4a to 4f having the ingredients and the amounts of ingredients listed in Tables 1 to 4 below were produced ( "Remainder" in Tables 1 to 4 is the amount that makes the total amount 100% by mass.).

(hair treatment)
0.2 g of the hair composition of the example was applied to a hair bundle that had undergone the hair dyeing treatment described later, and dried with hot air from a drier. After that, the hair bundle was sandwiched with a curling iron (“Curl Pro SR (32 mm) manufactured by Kreizion Co., Ltd.) with a heating element set at 190° C. and heated for 3 seconds. The heating was performed by applying a hair composition. This was also applied to hair tresses that were not dyed, and this was used as a hair dyeing treatment of a comparative example.

The hair bundles used in the above hair treatment were subjected to the following oxidation hair dyeing treatment. For commercially available hair bundles (“BM-YK-A” manufactured by Beaulux Co., Ltd.: about 1 g, about 10 cm of yak hair bundles), an oxidation hair dye containing an oxidation dye (Milbon Co., Ltd. “Ordeve Adixie 1 agent 9-GP" and "Ordeve Addicthy Oxidan 6.0" manufactured by the same company (approximately 4 g of an equal mixture) was applied, and then allowed to stand at room temperature for 20 minutes. After that, the oxidative hair dye was washed away from the tresses with warm water, and the tresses were dried with warm air while being combed. The hair dyeing process was performed as described above.

(Evaluation of fading suppression)
The treated hair tresses were evaluated for inhibition of discoloration. This evaluation is based on the difference in measured values (ΔE*ab) of the hair bundle before and after hair treatment (“spectrophotometer CM-5” manufactured by Konica Minolta Co., Ltd.), or by visual evaluation by two evaluators. I assumed. In the visual evaluation, when two evaluators evaluated that fading was suppressed more than the standard compared to the standards in each table, "○", and two evaluators evaluated that the fading was equivalent to the standard. was evaluated as "-", and when two evaluators evaluated that the fading progressed more than the standard, it was evaluated as "x".

Tables 1 to 4 below show the components blended in the hair composition, their blending amounts, and the results of the fading inhibition evaluation.

In Table 1 below, it can be confirmed that Examples 1a to 1d containing a chelating agent had a smaller color difference (ΔE*ab) than Comparative Example 1, and fading of dyed hair was suppressed. In addition, it has been confirmed that when the color fading suppression evaluation by visual observation is superior to that of a comparative sample, the color difference is also superior (smaller).

In Table 2 below, a comparison of Examples 2a to 2c confirms that when a chelating agent is added, increasing the compounding amount up to 0.5% by mass remarkably enhances the effect of suppressing fading.

In Table 3 below, it can be confirmed that Examples 3a to 3f, in which the component for suppressing fading was blended, suppressed fading more than Comparative Example 3.

In Table 4 below, it can be confirmed that the combined use of a chelating agent (disodium ethylenediaminetetraacetate) and ascorbyl tetra-2-hexyldecanoate, maltitol, or loquat leaf extract is more effective in suppressing discoloration.

Claims (8)

A hair composition to be applied to the hair before being heated,
One or two or more discoloration inhibiting ingredients selected from a chelating agent, ascorbyl tetra-2-hexyldecanoate, and almond extract are blended ,
from ethylenediaminetetraacetic acid, ethylenediaminetetraacetate, diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetate, ethylenediaminehydroxyethyltriacetate, ethylenediaminehydroxyethyltriacetate, hydroxyethanediphosphonic acid, and hydroxyethanediphosphonate as said chelating agent; A composition for hair characterized by comprising one or more selected types . The composition for hair according to claim 1, wherein the chelating agent is blended as the discoloration suppressing component. 3. The composition for hair according to claim 2, wherein the chelating agent is blended with one or more selected from ascorbyl tetra-2-hexyldecanoate, maltitol and loquat leaf extract. The composition for hair according to any one of claims 1 to 3, wherein the chelating agent is blended in an amount of 0.2% by mass or more. The hair composition according to any one of claims 1 to 4, which is used as a styling agent or leave-in treatment. The composition for hair according to any one of claims 1 to 4, wherein the heating is performed with a hair iron. A hair composition that is applied to the hair before heating and used as a styling agent or a leave-in treatment,
One or two or more discoloration inhibiting ingredients selected from a chelating agent, ascorbyl tetra-2-hexyldecanoate, maltitol, loquat leaf extract, almond extract, and tea leaf extract are blended,
At least the chelating agent is blended as the discoloration suppressing component, and the chelating agent is ethylenediaminetetraacetic acid, ethylenediaminetetraacetate, diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetate, ethylenediaminehydroxyethyltriacetate, ethylenediaminehydroxyethyltriacetate, hydroxyl A composition for hair comprising one or more selected from ethanediphosphonic acid and hydroxyethanediphosphonic acid salts. A hair treatment method using the hair composition according to any one of claims 1 to 7 .