JP6296241B2 - Hair dye - Google Patents

Description

  The present invention relates to a hair dye for temporarily coloring hair with a penetrating dye (pigment) or an ionic dye.

Conventionally, hair dyes that use HC dyes or basic dyes in combination with less damage to hair than hair dyes have been used (for example, Patent Document 1).
The HC dye is a dye having a small molecular diameter and penetrating into the hair through the gap between the cuticles and coloring by intermolecular force (van der Waals force).

  On the other hand, basic dyes (ionic dyes) have a large molecular weight, and cannot penetrate into the hair through the gaps in the cuticle, unlike HC dyes. The basic dye is a dye that colors the surface of the hair with positive ions by ionic bonds with respect to the hair in a negative ion state when the hair is in a neutral to alkaline state.

JP 2012-246284 A

  However, HC dyes are not ionically bonded to hair like ionic dyes, and are colored only by intermolecular forces, so the binding force is very weak, and it is easy to flow out of the inside of the hair by washing the hair, etc. Compared to dyes, there was a problem that the color fading easily and the color persistence was poor.

  In addition, as described above, the basic dye is an ion that binds to the surface of the hair in an alkaline state. However, in the cationic compounding component that makes the conventional hair in a negative ion state, the basic dye and There was a problem that the binding force of the ionic bond between the two was weak and the coloring was bad.

  Furthermore, HC dyes or basic dyes colored on the hair are easily deteriorated by ultraviolet rays, causing discoloration.

  In view of the above-mentioned problems of the prior art, an object of the present invention is to provide a hair dye capable of reducing the color fading of a dye and maintaining the color retention of the hair for a long period of time.

As a first means for solving the above problems, a colorant comprising a penetrating dye and a basic dye, and acrylamidopropyltrimonium chloride and methacrylic acid for improving the adhesion of the basic dye attached to the hair surface Formation of coating film excluding quaternary ammonium salt copolymer consisting of ethyltrimonium chloride and dimethylacrylamide and quaternary ammonium salt copolymer which coats the surface of the hair into which the penetrating dye has penetrated An object of the present invention is to provide a hair dye (excluding a hair dye ) characterized by containing an agent, a plant extract and hydrolyzed conchiolin.

As a second means for solving the above-mentioned problems, in the first means, the plant extract is a red dragon extract, an altea root extract, and a licorice root extract. It is in.

  According to the present invention as described above, since the coating film covering the surface of the hair dye to which the osmotic dye and the basic dye are attached is formed, the discoloration of the osmotic dye having a weaker bond than the basic dye is obtained. Can be maintained and the long-lasting color of the hair can be maintained.

  Moreover, since the copolymer of a quaternary ammonium salt is used, the adhesion of the basic dye and hair by an ionic bond can be improved, and coloring of a pigment | dye can be improved.

Because it uses hydrolyzed conchiolin and plant extracts of ougon extract, altea root extract and licorice root extract, it can reduce the deterioration of pigments colored on the hair by UV rays and maintain the color of the dye for a long time. .

It is the schematic diagram of the partial cross section which expanded the hair colored using the hair dye of this invention. It is a graph which shows the discoloration inhibitory effect by ultraviolet irradiation of various plant extracts and hydrolyzed conchiolin . It is data which shows the dyeing | staining property evaluation of the hair dye of this invention, and comparative goods AC.

  Hereinafter, embodiments of the hair dye of the present invention will be described in detail with reference to the accompanying drawings.

[Hair dye]
The hair dye of the present invention mainly comprises a base, a surfactant, a humectant, and a colorant. Moreover, the hair dye of this invention has mix | blended the premix component, surfactant, emollient component, PH adjuster, and antiseptic | preservative as other components.

As an example of the base of the present invention, water, myristyl alcohol, behenyl alcohol, myristic acid, hexyldecanol can be used.
Dimethyl stearamine can be used as the surfactant.
As the moisturizer, henna leaf extract, hydrolyzed keratin (sheep), shea butter, cocoyl arginine ethyl PCA can be used.
As the premix component, PG (propylene glycol) or BG (butylene glycol) can be used.
As the emollient component, diisobutyl adipate can be used.
Lactic acid can be used as the pH adjuster.
As the preservative, phenoxyethanol can be used.

The colorant according to this embodiment uses a penetrating dye that is dyed by physical adsorption and a basic dye that is dyed by chemical adsorption.
The HC dye that becomes a penetrating dye is generally a dye that penetrates into the hair through the gap between the cuticles and is colored by intermolecular force. Since the penetrating dye penetrates into the hair and gives a shade to a white hair portion that is a bright portion of the hair color, the coloring effect on white hair is particularly high. The hair dye of the present invention uses HC blue 2, HC yellow 4, HC red 3, 4-hydroxypropylamino-3-nitrophenol as an example of the HC dye.

  The ionic pigment which becomes a basic dye acts on the scaly cuticle on the surface of the hair, and is ionically bonded particularly to the minus part of the keratin protein. Specifically, it is a dye that colors the surface of the hair with positive ions by ionic bonds with respect to the hair in a state where the hair is in a neutral to alkaline state and becomes negative ions. The hair dye of the present invention uses basic red 76, basic brown 16, basic blue 99, and basic yellow 57 as examples of basic dyes.

The hair dye of the present invention further contains a coating film forming agent, a quaternary ammonium copolymer, a plant extract and hydrolyzed conchiolin in addition to the above-described blending components.
The coating film forming agent forms a coating film on the hair surface (coating film). As an example of the coating film forming agent of the present invention, bisethoxydiglycol cyclohexane-1,4-dicarboxylate can be used. In addition, as the coating film forming agent, a polymer compound containing a cross polymer may be used. Such a coating film forming agent can form a coating film that covers the outer surface of the hair with two types of dyes against the HC dye that has penetrated into the hair and the basic dye that has adhered to the hair surface. . Thereby, discoloration of the dye adhering to the hair can be prevented, and the color durability of the hair can be maintained for a long time.

  The quaternary ammonium salt copolymer of the present invention enhances the adhesion of a basic dye that is ionically bonded. Polyquaternium-73 is used as an example of the quaternary ammonium salt copolymer. Polyquaternium-73 is a quaternary ammonium salt copolymer composed of acrylamidopropyltrimonium chloride, ethyltrimonium methacrylate methacrylate and dimethylacrylamide. Such a quaternary ammonium salt copolymer easily binds to ions when the basic dye is positively ionized and the hair is in a negative ion state due to the basicity of the quaternary ammonium salt copolymer. Thus, the adhesion between the basic dye and the hair can be enhanced.

The plant extract and hydrolyzed conchiolin prevent discoloration of the hair colored with a basic dye and / or osmotic dye due to ultraviolet irradiation.
FIG. 2 is a graph showing the anti-fading effect of various plant extracts and hydrolyzed conchiolin by ultraviolet irradiation.
This figure is the result of verifying the effect of inhibiting fading on the hair dyed with HC dye (HC hair dye) by ultraviolet irradiation of various plant extracts and hydrolyzed conchiolin .
Test plant extract used was a Altea extract, Scutellaria root extract and licorice extract, a pearl protein extract.

  The test method is to apply 4g each of HC hair dye (no blending and 1% plant extract blending) to the surface of the keratin film. The keratin film is left at 40 ° C. for 1 hour. Thereafter, the hair dye on the film surface is wiped off, distilled water is poured into the petri dish, and left at room temperature for 2 minutes. The washing operation is repeated 6 times, and the film is sufficiently dried in a desiccator.

The fading degree is measured by measuring the L ^* , a ^* , and b ^* values of the surface of the stained keratin film with a spectrocolorimeter. Thereafter, the surface of the keratin film is irradiated with ultraviolet rays having an ultraviolet intensity (UV-A: 1.0 mW / cm 2, UV-B: 1.0 mW / cm 2). After irradiation, the surface of the keratin film 90 to 450 minutes later was color-measured, the measured value before ultraviolet irradiation and the color difference ΔE were calculated, and the fading suppression effect of each plant extract was confirmed.
It shows ΔE of each plant extract-containing hair dye when ΔE after 7.5 hours, 9 hours, and 10.5 hours after ultraviolet irradiation of a plant extract-free (blank) is 100%. As a result, all of the Altea extract, Ogon extract, licorice extract, and pearl protein extract had an effect of suppressing fading due to ultraviolet irradiation.

Thus, the hair dye of the present invention uses ougon extract, altea root extract and licorice root extract and hydrolyzed conchiolin equivalent to pearl protein extract as plant extracts.
The hair dye of the present invention comprising the above blending components is blended at a predetermined blending ratio and manufactured into a viscous liquid.

[Action]
FIG. 1 is a schematic diagram of a partial cross-section in which hair colored with the hair dye of the present invention is enlarged. As shown in the figure, when the hair 10 is thick, a medulla 12 (the medulla) is present at the center, and a cortex 14 (fur) is formed around it. A cuticle 16 (hair epidermis) is formed in a scaly shape on the surface of the hair so as to protect the cortex 14.

When the hair dye of the present invention is applied to the hair, the HC dye 20 having a small molecular diameter penetrates into the hair through the gaps in the cuticle 16 of the hair and adheres and dyes by intermolecular force.
In addition, the basic dye 30 colors the hair surface by ionic bonds with positive ions with respect to the hair in a state where the hair is in a neutral to alkaline state and becomes negative ions. At this time, the basic quaternary ammonium salt copolymer is charged with a positive ion by the blended quaternary ammonium salt copolymer, and the hair is negatively ionized due to the basicity of the quaternary ammonium salt copolymer. And the adhesion between the basic dye and the hair can be improved.

And in the state which such HC dye 20 and basic dye 30 have adhered to hair, the coating film 40 which covers the outer surface of hair with two types of dyes can be formed with a coating film formation agent. Thereby, discoloration of the dye adhering to the hair can be prevented, and the color durability of the hair can be maintained for a long time.
In addition, it contains hydrolyzed conchiolin and plant extracts such as ougon extract, altea root extract and licorice root extract, thus reducing the deterioration of pigments colored on the hair by UV rays and maintaining the color of the dye for a long time. be able to.

[Comparative example]
FIG. 3 is data showing the dyeability evaluation of the hair dye of the present invention and comparative products A-C.
In the same data, the hair dye of the present invention and comparative products A to C are respectively applied to samples (goat hair white hair bundle), and each sample is left at a temperature of 40 degrees for 30 minutes. Then, each sample was washed with running water (hair dye only), the hair was repeated 3 times (hair dyeing + 3 times hair washing), and the hair was repeated 10 times (hair dyeing + 10 hair washes). .

As a staining measurement method, the surface of each sample is colorimetrically measured for L ^* , a ^* , and b ^* values using a spectrocolorimeter. The measured value of the sample dyed with the hair dye of the present invention and not washed was used as basic data, and the color difference ΔE of each sample was calculated from the basic data, and the dyeability of each sample was evaluated based on the color difference ΔE.

  Ingredients of Comparative Product A are water, myristyl alcohol, PG, dimethyl stearamine, behenyl alcohol, henna leaf extract, hydrolyzed keratin (sheep), shea fat, diisobutyl adipate, myristyl acid, hexyldecanol, cocoyl arginine ethyl PCA, lactic acid, phenoxyethanol, BG, HC yellow 4, HC blue 2, HC red 3, 4-hydroxypropylamino-3-nitrophenol, basic blue 99, basic red 76, and basic brown 16.

  The components of Comparative Product B are water, stearyl alcohol, glycerin, dimethicone, stearoxypropyltrimonium chloride, cetanol, isopropyl myristate, PCA-Na, olive oil, ubiquinone, acetyl hyaluronic acid Na, ceramide 3, water-soluble collagen, Eucalyptus extract, hydrolyzed conchiolin, dilauroyl glutamic acid lysine Na, isostearoyl hydrolyzed silk, hexa (hydroxystearic acid / stearic acid / rosinic acid) dipentaester, lactic acid, hydroxyethyl cellulose, surfactant, isostearic acid, lauryl glucoside , BG, phenoxyethanol, fragrance, HC dye, basic dye.

  Composition of Comparative Product C is water, dimethicone, cetanol, BG, glycol, glycerin, behentrimonium chloride, aminopropyl dimethicone, ethanol, plant extract, oleyl oleate, sea salt, hydrolyzed conchiolin, kagome extract, pH adjustment Agent, water-soluble collagen, steartrimonium chloride, dimerlinoleic acid hydrogenated castor oil, methyl paraben, fragrance, HC dye, basic dye.

  Dyeing with the hair dye of the present invention, the color difference ΔE of 3 times of hair washing and 10 times of hair washing was 0.75 and 4.60, respectively. Next, the color difference ΔE of the comparative product A 3 times and 10 times the hair was 8.25 and 17.03, respectively. The color difference ΔE of the comparative product B 3 times and 10 times was 12.3 and 20.25, respectively. The color difference ΔE of the comparative product C 3 times and 10 times was 13.80 and 16.10, respectively.

  The ratio of the hair dye of the present invention 3 times the hair washing to the comparative product AC is 10.9 times to 18.3 times, and the ratio of the hair dye of the present invention 10 times the hair washing to the comparative product AC is 3 times. .5 times to 4.4 times.

As a result, the hair dye of the present invention was significantly smaller in color difference between the hair washes 3 times and the hair washes 10 times than the comparative products AC, and was effective in maintaining the color of the dye. In addition, the hair dye of the present invention has a dye durability of 10.9 times to 18.3 times in 3 times of hair washing and 3.5 times to 4.4 times in 10 times of hair washing as compared with the comparative product AC. There was an excellent effect. Comparative product A does not contain a coating film forming agent, a quaternary ammonium salt copolymer, a plant extract and a hydrolyzed conchiolin , which are particularly effective ingredients of the hair dye of the present invention. The result that the value of the color difference was larger than that of the hair was obtained.

  According to the hair dye of the present invention, since the coating film covering the surface of the hair dye to which the osmotic dye and the basic dye are attached is formed, the osmotic dye having a weak bond compared to the basic dye is used. The color fading can be reduced, and the color retention of the hair can be maintained for a long time.

  The hair dye of the present invention is useful in the field of semi-permanent or temporary hair dyes such as color nail polish, color rinse, and color treatment.

10 ......... Hair, 12 ......... Medura, 14 ......... Cortex, 16 ......... Cuticle, 20 ......... HC dye, 30 ...... Basic dye, 40 ...... Coating film.

Claims (2)

A colorant comprising a penetrating dye and a basic dye;
A copolymer of quaternary ammonium salt consisting of acrylamidopropyltrimonium chloride, ethyltrimonium methacrylate methacrylate and dimethylacrylamide to enhance the adhesion of the basic dye attached to the surface of the hair;
A coating film forming agent excluding the quaternary ammonium salt copolymer that coats the surface of the hair into which the penetrating dye has penetrated;
A hair dye containing a plant extract and hydrolyzed conchiolin (excluding hair dye ) .   The hair dye according to claim 1, wherein the plant extract is an orange extract, an altea root extract, and a liquorice root extract.