CN117618310B - Hair dye for reducing hair damage and preparation method thereof - Google Patents

Abstract

The present invention relates to the field of cosmetic technology, and more particularly to a hair dye for reducing hair damage and a preparation method thereof. A hair dye for reducing hair damage comprises the following components: ammonia water, a thickener, an emulsifier, a solubilizer, an antioxidant, a chelating agent, a dye, an antistatic agent, a flavor, sodium polyaspartate, an acidity regulator, hydroxyethyl urea, a ginseng root extract, a healing velvet flower extract, castor oil maleate, a soapberry fruit extract, polydimethylsiloxane, and a water balance. A method for preparing a hair dye for reducing hair damage is to mix the components to obtain a hair dye for reducing hair damage. The present application provides a hair dye with a good coloring effect that can reduce hair damage and reduce residual ammonia water.

Description

Hair dye for reducing hair damage and preparation method thereof

Technical Field

The invention relates to the technical field of cosmetics, and in particular to a hair dye capable of reducing hair damage and a preparation method thereof.

Background Art

Hair dyes have a long history. As early as the ancient Egyptian period, people began to use plant dyes for hair dyeing. With the continuous development of society, people have higher and higher requirements for the diversity and durability of hair color, and hair dyes based on various chemical substances have appeared one after another. Oxidative hair dyes mainly include dyes composed of intermediates and coupling agents. When used, they are combined with color developers prepared from hydrogen peroxide, etc., to finally make the hair permanently colored.

When using oxidative hair dyes, the first step is to use alkaline substances such as ammonia to open the hair scales, thereby allowing the intermediates and coupling agents to enter the cortex of the hair through the opened scales. In real life, after choosing ammonia as an alkaline agent to open the hair scales, ammonia often remains in the hair, causing the hair to have a lingering ammonia smell, which seriously affects the experience after dyeing. In the prior art, the smell of ammonia is mainly covered by adding essence to the hair dye, but this method often requires a stronger fragrance to cover the smell of ammonia, which makes the hair fragrance after dyeing too strong, making it more difficult for people who are very sensitive to smell to adapt.

Therefore, it is necessary to further improve the formula of hair dyes to reduce the residue of ammonia on the hair, thereby further reducing the ammonia smell of the hair after dyeing.

Summary of the invention

In order to reduce the residue of ammonia on the hair, thereby further reducing the ammonia smell of the hair after dyeing, the present application provides a hair dye that reduces hair damage and a preparation method thereof.

In the first aspect, the present application provides a hair dye for reducing hair damage using the following technical solution:

A hair dye for reducing hair damage comprises the following components in percentage by mass: 5% to 7% ammonia water, 5% to 10% thickener, 3% to 6% emulsifier, 2% to 4% solubilizer, 0.3% to 0.6% antioxidant, 0.1% to 0.3% chelating agent, 0.33% to 0.76% dye, 1.1% to 3.2% antistatic agent, 0.1% to 0.5% essence, 3% to 5% sodium polyaspartate, 3% to 4.5% acidity regulator, 3% to 5% hydroxyethyl urea, 0.5% to 1% ginseng root extract, 0.5% to 1% healer's hair flower extract, 0.4% to 0.8% castor oil maleate, 0.2% to 0.5% soapberry fruit extract, 0.5% to 1% polydimethylsiloxane, and water as the balance.

In the above technical scheme, the present application can significantly reduce the pH value of the hair dye and reduce the damage of ammonia water to the hair cuticles by adding malic acid regulator to the hair dye, thereby reducing the damage of the hair cuticles during the hair dyeing process and reducing the damage of hair dyeing to the hair; the present application further adds sodium polyaspartate, ginseng root extract and healing velvet flower extract. The three can promote the better entry of the dye into the space between the hair cuticles and the cortex layer when the hair cuticles are less open under the good synergistic effect, thereby reacting to generate more macromolecular colored dyes and improving the coloring effect of the hair. At the same time, the combination of sodium polyaspartate, ginseng root extract and healing velvet flower extract also has an unexpected effect of reducing the residual amount of ammonia water on the hair, and can promote the residual ammonia water adhering to the hair cuticles and between the hair cuticles and the cortex layer. The elution can further reduce the residual ammonia odor on the hair after dyeing and reduce the continuous damage of residual ammonia to the hair, further improving the use experience of the hair dye; furthermore, the sodium polyaspartate and hydroxyethyl urea added in the hair dye of the present application can moisturize, nourish and strengthen the hair structure, the ginseng root extract, the healing velvet flower extract and the soapberry fruit extract are rich in nutrients and moisturizing ingredients, which can provide comprehensive nutritional supplements and moisturizing effects to the hair, the castor oil maleate has a good film-forming effect, which can further smooth the frizzy hair scales, and the polydimethylsiloxane has a good lubricating effect on the hair, which can reduce hair friction and thus reduce the damage to the hair scales. Through the coordinated effect of the above-mentioned multi-faceted effects, the present application obtains a hair dye with good coloring effect that can reduce hair damage and reduce residual ammonia.

Preferably, the mass ratio of the sodium polyaspartate, the ginseng root extract and the velvetleaf flower extract is 4:0.7:0.9.

In the above technical scheme, the present application limits the mass ratio of sodium polyaspartate, ginseng root extract and velvet flower extract to 4:0.7:0.9. At this mass ratio, sodium polyaspartate, ginseng root extract and velvet flower extract have better synergistic effect, which can further reduce the ammonia odor remaining on the hair after dyeing and reduce the continuous damage of residual ammonia to the hair, and further improve the coloring effect of the hair dye.

Preferably, the acidity regulator is a mixture of malic acid, maleic acid and glycolic acid in a mass ratio of (1-1.5):(1-1.5):(1-1.5).

In the above technical scheme, the present application limits the acidic regulator to a mixture of malic acid, maleic acid and glycolic acid in a mass ratio of (1-1.5): (1-1.5): (1-1.5), thereby achieving a better reduction in the damage of ammonia to the hair scales, and being able to better cooperate with sodium polyaspartate, ginseng root extract and healing velvet flower extract to further reduce the residual amount of ammonia on the hair, further promote the elution of residual ammonia adhering to the hair scales and between the hair scales and the cortex, further reduce the residual ammonia odor on the hair after dyeing, and further improve the user experience of the hair dye.

Preferably, the dye includes one or more of toluene-2,5-diamine sulfate, resorcinol, 2,4-diaminophenoxyethanol hydrochloride, 4-amino-2-hydroxytoluene, p-phenylenediamine, m-aminophenol, N,N-bis(2-hydroxyethyl)p-phenylenediamine sulfate, p-aminophenol, 1-hydroxyethyl-4,5-diaminopyrazole sulfate, 2-amino-3-hydroxypyridine, and toluene-2,5-diamine sulfate.

In the above technical solution, the selection of the above dyes can reduce the stimulation to the scalp as much as possible on the basis of better dyeing effect, thereby further improving the use experience of the hair dye.

Preferably, the antioxidant comprises sodium sulfite and sodium ascorbate, the sodium sulfite accounts for 0.2% to 0.4% of the hair dye, and the sodium ascorbate accounts for 0.1% to 0.2% of the hair dye.

In the above technical solution, the present application adopts sodium sulfite and sodium ascorbate as antioxidants, which can further improve the stability of the hair dye and further improve the coloring effect of the hair dye.

Preferably, the emulsifier comprises ceteareth-25 and cetrimonium chloride, the ceteareth-25 accounts for 2% to 4% of the hair dye, and the cetrimonium chloride accounts for 1% to 2% of the hair dye.

In the above technical scheme, the present application adopts ceteareth-25 and cetrimonium chloride as emulsifiers, so that the components in the hair dye are dispersed more evenly, thereby further improving the coloring uniformity of the hair dye.

Preferably, the antistatic agent comprises polyquaternium-10 and polyquaternium-7, the polyquaternium-10 accounts for 0.1% to 0.2% of the hair dye, and the polyquaternium-7 accounts for 1% to 3% of the hair dye.

In the above technical solution, the present application further limits the antistatic agent to polyquaternium-10 and polyquaternium-7, thereby ensuring that the hair has a good antistatic effect after dyeing and reducing further damage to the hair scales caused by friction.

Preferably, the mass concentration of the ammonia water is 25%.

In a second aspect, the present application provides a method for preparing a hair dye for reducing hair damage, which adopts the following technical solution:

A method for preparing a hair dye for reducing hair damage comprises the following steps:

Step 1: Mix water, thickener, emulsifier and solubilizer, heat to 75-85°C, homogenize for 5-10 minutes, and stir until completely dissolved;

Step 2: Cool the product of step 1 to 60-65° C., add the raw material antioxidant, dye, chelating agent, antistatic agent, sodium polyaspartate, malic acid, maleic acid and glycolic acid composition, hydroxyethyl urea, ginseng root extract, healer's velvet flower extract, castor oil maleate, soapberry fruit extract, polydimethylsiloxane in sequence, homogenize until completely dissolved, and then stir evenly;

Step 3: Cool the product of step 2 to 40-45° C., add the remaining other raw materials, and stir evenly to obtain a hair dye that reduces hair damage.

In the above technical scheme, the hair dye prepared by the above preparation method of the present application has good dispersibility and stability, and can exert a better coloring effect and reduce hair damage when used.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The present application adds sodium polyaspartate, ginseng root extract and velvet flower extract to the hair dye. The three ingredients work synergistically together to promote the better entry of the dye into the space between the hair scales and the cortex when the hair scales are less open, thereby reacting to generate more macromolecular colored dyes and improving the coloring effect of the hair. At the same time, the combination of sodium polyaspartate, ginseng root extract and velvet flower extract also has an unexpected effect of reducing the residual amount of ammonia water on the hair, and can promote the elution of residual ammonia water adhering to the hair scales and between the hair scales and the cortex layer, further reducing the ammonia odor remaining on the hair after dyeing and reducing the persistent damage of residual ammonia water to the hair, further improving the user experience of the hair dye.

2. The present application defines the acidic regulator as a mixture of malic acid, maleic acid and glycolic acid in a mass ratio of (1-1.5):(1-1.5):(1-1.5), thereby achieving a better reduction in the damage of ammonia to hair scales, and being able to better cooperate with sodium polyaspartate, ginseng root extract and velvetia pubescens extract to further reduce the residual amount of ammonia on the hair, further promote the elution of residual ammonia adhering to the hair scales and between the hair scales and the cortex, further reduce the residual ammonia odor on the hair after dyeing, and further improve the user experience of the hair dye.

DETAILED DESCRIPTION

In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

Example 1

A hair dye for reducing hair damage comprises the following components: 57.74kg of water, 7kg of ammonia water, 10kg of thickener, 5kg of emulsifier, 2kg of solubilizer, 0.6kg of antioxidant, 0.1kg of chelating agent, 0.76kg of dye, 3.1kg of antistatic agent, 0.1kg of essence, 3kg of sodium polyaspartate, 4.5kg of acidity regulator, 3kg of hydroxyethyl urea, 1kg of ginseng root extract, 0.5kg of velvet flower extract, 0.4kg of castor oil maleate, 0.2kg of soapberry fruit extract and 1kg of polydimethylsiloxane.

Among them, the thickener is cetearyl alcohol.

Wherein, the emulsifier includes 4kg of ceteareth-25 and 1kg of cetrimonium chloride.

Wherein, the solubilizing agent is ethanol.

Wherein, the antioxidant comprises 0.4kg sodium sulfite and 0.2kg sodium ascorbate.

Among them, the chelating agent is disodium ethylenediaminetetraacetate.

The dye includes 0.5 kg toluene-2,5-diamine sulfate, 0.06 kg resorcinol, 0.1 kg 2,4-diaminophenoxyethanol hydrochloride and 0.1 kg 4-amino-2-hydroxytoluene.

The antistatic agent includes 0.1 kg of polyquaternium-10 and 3 kg of polyquaternium-7.

Among them, sodium polyaspartate was purchased from Shanghai Yuanye Biotechnology Co., Ltd., product number S25535.

The acidity regulator is a mixture of 1.5 kg malic acid, 1.5 kg maleic acid and 1.5 kg glycolic acid.

Among them, hydroxyethyl urea was purchased from Sigma-Aldrich (Shanghai) Trading Co., Ltd., item number 554693.

Among them, ginseng root extract was purchased from Xi'an Anao Biotechnology Co., Ltd. and extracted by water extraction with an extraction ratio of 1:10.

Among them, the healing velvet flower extract was purchased from Shanghai Yuyu New Material Technology Co., Ltd. and extracted using water extraction with an extraction ratio of 1:10.

Among them, castor oil maleate was purchased from Tianmen Hengchang Chemical Co., Ltd., item number: HC5454.

Among them, the soapberry fruit extract was purchased from Shaanxi Green Biotechnology Co., Ltd. and extracted using the water extraction method with an extraction ratio of 1:10.

Among them, polydimethylsiloxane was purchased from Sigma-Aldrich (Shanghai) Trading Co., Ltd. with the product number PHR1518.

Wherein, the preparation method of the hair dye for reducing hair damage comprises the following steps:

Step 1: Mix water, thickener, emulsifier and solubilizer, heat to 85°C, homogenize at 3000r/min for 5min, and then stir at 300r/min until completely dissolved.

Step 2: Cool the product of step 1 to 65°C, and add the raw materials antioxidant, dye, chelating agent, antistatic agent, sodium polyaspartate, malic acid, maleic acid and glycolic acid composition, hydroxyethyl urea, ginseng root extract, velvet flower extract, castor oil maleate, soapberry fruit extract, and polydimethylsiloxane in sequence, homogenize at 3000r/min until completely dissolved, and then stir evenly at 300r/min.

Step 3: Cool the product of step 2 to 45°C, add the remaining other raw materials, and stir evenly at 300r/min to obtain a hair dye that reduces hair damage.

Example 2

A hair dye for reducing hair damage, which is different from Example 1 in that it includes the following components: 62.64kg water, 5kg ammonia water, 5kg thickener, 4kg emulsifier, 4kg solubilizer, 0.3kg antioxidant, 0.3kg chelating agent, 0.76kg dye, 1.2kg antistatic agent, 0.5kg flavor, 5kg sodium polyaspartate, 3kg acid regulator, 5kg hydroxyethyl urea, 0.5kg ginseng root extract, 1kg healing velvet flower extract, 0.8kg castor oil maleate, 0.5kg soapberry fruit extract, and 0.5kg polydimethylsiloxane.

Wherein, the emulsifier includes 2kg of ceteareth-25 and 2kg of cetrimonium chloride.

Wherein, the antioxidant includes 0.2kg sodium sulfite and 0.1kg sodium ascorbate.

The antistatic agent includes 0.2 kg of polyquaternium-10 and 1 kg of polyquaternium-7.

The acidity regulator is a mixture of 1 kg malic acid, 1 kg maleic acid and 1 kg glycolic acid.

Wherein, the preparation method of the hair dye for reducing hair damage comprises the following steps:

Step 1: Mix water, thickener, emulsifier and solubilizer, heat to 75°C, homogenize at 2000r/min for 10min, and then stir at 200r/min until completely dissolved.

Step 2: Cool the product of step 1 to 60°C, and add the raw materials antioxidant, dye, chelating agent, antistatic agent, sodium polyaspartate, malic acid, maleic acid and glycolic acid composition, hydroxyethyl urea, ginseng root extract, velvet flower extract, castor oil maleate, soapberry fruit extract, and polydimethylsiloxane in sequence, homogenize at 2000r/min until completely dissolved, and then stir evenly at 200r/min.

Step 3: Cool the product of step 2 to 40°C, add the remaining other raw materials, and stir evenly at 200r/min to obtain a hair dye that reduces hair damage.

Example 3

A hair dye for reducing hair damage, which is different from Example 1 in that sodium polyaspartate is adjusted to 4 kg, ginseng root extract is adjusted to 0.7 kg, velvetleaf flower extract is adjusted to 0.9 kg, and water is adjusted to 56.64 kg.

Example 4

A hair dye for reducing hair damage, wherein the difference from Example 3 is that the acidic regulator is 4.5 kg of malic acid.

Example 5

A hair dye for reducing hair damage, which is different from Example 3 in that the acidic regulator is 4.5 kg of maleic acid.

Example 6

A hair dye for reducing hair damage, wherein the difference from Example 3 is that the acidic regulator is 4.5 kg of glycolic acid.

Comparative Example 1

A hair dye, which is different from Example 3 in that an equal amount of sodium polyaspartate is replaced by sodium polyglutamate.

Comparative Example 2

A hair dye, which is different from Example 3 in that an equal amount of ginseng root extract is replaced by a Polygonum multiflorum extract.

Among them, the Polygonum multiflorum extract is commercially available and extracted by water extraction with an extraction ratio of 1:10.

Comparative Example 3

A hair dye, which is different from Example 3 in that an equal amount of the extract of the flos velvetifolia is replaced by an extract of Polygonum multiflorum.

Comparative Example 4

A hair dye, which is different from Example 3 in that it does not contain the combination of malic acid, maleic acid and glycolic acid.

Detection test

Preparation of test samples: The hair dyes of the above-mentioned embodiments and comparisons of the present application were respectively used with a hydrogen peroxide solution with a mass concentration of 6% to dye 10 natural white hair bundles selected from the same source, the hair bundles being about 10 cm long and weighing about 5 g.

The specific hair dyeing process is as follows: at room temperature of 25°C and humidity of 75%, 3 mL of the hair dye of each embodiment and comparative example and 3 mL of hydrogen peroxide solution with a mass concentration of 6% are mixed in a mass ratio of 1:1, and evenly applied to the corresponding hair bundle. After waiting for 20 minutes, the hair bundle is continuously washed 3 times with 60 mL of clean water, and 20 times of 20 mL of clean water is used each time. After washing, the water is dried with a towel until the hair bundle no longer drips, and then naturally dried.

Test 1

Detecting the residual ammonia in hair

Add 50 mL of water and 3 drops of 0.1% methyl orange indicator to the conical flask. Hang the hair bundle in the conical flask and seal it. After leaving it for 12 hours, take out the hair bundle and titrate it with 0.2 mol hydrochloric acid solution until the colorless solution in the conical flask suddenly turns orange-red. Stop the titration and record the amount of hydrochloric acid solution used in Table 1.

Test 2

Coloring effect detection

Use a colorimeter to measure the L, a, and b values of each hair bundle, and calculate the hair color difference value based on the L1, a1, and b1 values of the hair bundle before dyeing. The test results are recorded in Table 1. The larger the ΔE, the better the coloring effect.

Test 3

Hair tensile strength test

A push-pull dynamometer was used to measure the tensile strength value (N) of the hair bundle sample that had not been dyed, which was recorded as the initial tensile strength value. Then, 10 hairs were randomly selected from each of the dyed hair bundles to test the tensile strength value of the hair. The tensile strength change rate (%) was calculated as [(initial tensile strength value-tensile strength value)/initial tensile strength value]*100%. The smaller the tensile strength change rate (%), the less damage the hair was caused by hair dyeing. The test results are recorded in Table 1.

Table 1:

Combining Examples 1-6 with Comparative Examples 1-4, it can be seen that the hair dyes of Examples 1-6 have good effects of reducing hair damage, reducing ammonia residue, and coloring.

Specifically combined with Example 3 and Comparative Examples 1-3, the difference between Comparative Examples 1-3 and Example 3 is that Example 3 simultaneously adds sodium polyaspartate, ginseng root extract and healing velvet flower extract, and the hair damage reduction effect, ammonia residue reduction effect and coloring effect of Example 3 are better to a certain extent. According to this analysis, the present application simultaneously adds sodium polyaspartate, ginseng root extract and healing velvet flower extract to the hair dye, and the three, under the good synergistic effect, can still promote the dye to better enter between the hair scales and the cortex when the hair scales are less open, thereby improving the coloring effect of the hair, and also has an unexpected effect of reducing the amount of ammonia residue on the hair, which can promote the elution of residual ammonia adhered to the hair scales and between the hair scales and the cortex, further reducing the ammonia odor remaining on the hair after dyeing and reducing the persistent damage of residual ammonia to the hair, further improving the use experience of the hair dye.

Specifically combined with Example 3 and Example 4-6, the difference between Example 4-6 and Example 3 is that the acidic regulators of Example 4-6 are malic acid, maleic acid and glycolic acid, respectively, and the hair damage reduction effect, the ammonia residue reduction effect and the coloring effect of Example 3 are better to a certain extent. The applicant therefore analyzes that the present application not only achieves a better effect of reducing the damage of ammonia to the hair scales by adding malic acid, maleic acid and glycolic acid at the same time, but also can better cooperate with sodium polyaspartate, ginseng root extract and healing velvet flower extract, further reduce the residual amount of ammonia on the hair, further promote the elution of residual ammonia adhering to the hair scales, the hair scales and the cortex layer, and further reduce the residual ammonia odor on the hair after dyeing. In combination with the data analysis of the color difference value ΔE, the compounding of malic acid, maleic acid and glycolic acid can further improve the coloring effect of the hair dye to a certain extent. The applicant speculates that this is because the compounding of malic acid, maleic acid and glycolic acid can better seal the dye between the hair scales and the cortex layer.

This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed. However, as long as it is within the scope of the claims of the present application, it shall be protected by the patent law.

Claims (7)

1. A hair dye for reducing hair damage, characterized in that it comprises the following components in percentage by mass: 5% to 7% ammonia water, 5% to 10% thickener, 3% to 6% emulsifier, 2% to 4% solubilizer, 0.3% to 0.6% antioxidant, 0.1% to 0.3% chelating agent, 0.33% to 0.76% dye, 1.1% to 3.2% antistatic agent, 0.1% to 0.5% flavor, 3% to 5% sodium polyaspartate, 3% to 4.5% acidity regulator, 3% to 5% hydroxyethyl urea, 0.5% to 1% ginseng root extract, 0.5% to 1% healer's hair flower extract, 0.4% to 0.8% castor oil maleate, 0.2% to 0.5% soapberry fruit extract, 0.5% to 1% polydimethylsiloxane, and water as the balance; The acidity regulator is prepared by mixing malic acid, maleic acid and glycolic acid in a mass ratio of (1-1.5):(1-1.5):(1-1.5); The dye comprises one or more of resorcinol, 2,4-diaminophenoxyethanol hydrochloride, 4-amino-2-hydroxytoluene, p-phenylenediamine, m-aminophenol, N,N-bis(2-hydroxyethyl)p-phenylenediamine sulfate, p-aminophenol, 1-hydroxyethyl-4,5-diaminopyrazole sulfate, 2-amino-3-hydroxypyridine, and toluene-2,5-diamine sulfate. 2. The hair dye for reducing hair damage according to claim 1, characterized in that the mass ratio of sodium polyaspartate, ginseng root extract and velvetleaf flower extract is 4:0.7:0.9. 3. The hair dye for reducing hair damage according to claim 1, characterized in that the antioxidant comprises sodium sulfite and sodium ascorbate, the sodium sulfite accounts for 0.2% to 0.4% of the hair dye, and the sodium ascorbate accounts for 0.1% to 0.2% of the hair dye. 4. The hair dye for reducing hair damage according to claim 1, characterized in that the emulsifier comprises ceteareth-25 and cetrimonium chloride, the ceteareth-25 accounts for 2% to 4% of the hair dye, and the cetrimonium chloride accounts for 1% to 2% of the hair dye. 5. The hair dye for reducing hair damage according to claim 1, characterized in that the antistatic agent comprises polyquaternium-10 and polyquaternium-7, the polyquaternium-10 accounts for 0.1% to 0.2% of the hair dye, and the polyquaternium-7 accounts for 1% to 3% of the hair dye. 6. The hair dye for reducing hair damage according to claim 1, characterized in that the mass concentration of the ammonia water is 25%. 7. A method for preparing a hair dye for reducing hair damage according to any one of claims 1 to 6, characterized in that it comprises the following steps: Step 1: Mix water, thickener, emulsifier and solubilizer, heat to 75-85°C, homogenize for 5-10 minutes, and stir until completely dissolved; Step 2: Cool the product of step 1 to 60-65°C, add the raw material antioxidant, dye, chelating agent, antistatic agent, sodium polyaspartate, malic acid, maleic acid and glycolic acid composition, hydroxyethyl urea, ginseng root extract, healer's velvet flower extract, castor oil maleate, soapberry fruit extract, polydimethylsiloxane in sequence, homogenize until completely dissolved, and then stir evenly; Step 3: Cool the product of step 2 to 40-45°C, add the remaining other raw materials, stir evenly, and obtain a hair dye that reduces hair damage.