CN117530891B

CN117530891B - Hair dye with low irritation and preparation method thereof

Info

Publication number: CN117530891B
Application number: CN202311729852.XA
Authority: CN
Inventors: 刘昌海; 袁文钦; 纪生阵; 陈令山; 吴强
Original assignee: Foshan Xizhuang Cosmetics Co ltd
Current assignee: Foshan Xizhuang Cosmetics Co ltd
Priority date: 2023-12-15
Filing date: 2023-12-15
Publication date: 2024-05-24
Anticipated expiration: 2043-12-15
Also published as: CN117530891A

Abstract

The application relates to the field of hair dye products, in particular to a hair dye with low irritation and a preparation method thereof. A hair dye with low irritation comprising: 5-10% of a soft emollient, 1-5% of an emulsifying agent, 1-2.5% of a conditioning agent, 0-1% of essence, 0.1-1% of a chelating agent, 0.1-1% of a film forming agent, 0-1% of an antioxidant, 0.01-5% of a hair colorant, 1-5% of an alkaline agent, 0.1-2% of an antihistamine, 1-15% of a buffer, 1-5% of a witch hazel extract, 1-5% of trehalose, 0.1-2% of a soapberry extract, 0.1-2% of a kelp extract, and the balance of water to 100%. The application has the advantages of reducing the irritation of the hair dye to scalp and the damage to hair.

Description

Hair dye with low irritation and preparation method thereof

Technical Field

The application relates to the field of hair dye products, in particular to a hair dye with low irritation and a preparation method thereof.

Background

Along with the improvement of living standard, people pay more attention to their own external image, and the social functions of hair become important. Hair styling methods such as permanent waving and dyeing are widely used in the folk.

The chemical hair dyes are classified into temporary hair dyes, semi-permanent hair dyes and permanent hair dyes. Among the most widely used are permanent hair dyes, which consist essentially of arylamines and their derivative intermediates and polyhydric phenol coupling agents. After the permanent hair dye is applied to the hair, the hair is swelled due to the alkaline condition, and the hair colorant molecules can permeate into the cortex layer of the hair under the alkaline condition, and a series of reactions such as oxidation, coupling, condensation and the like occur, so that larger hair colorant molecules are finally formed in the hair, and then the hair colorant molecules are sealed in the hair fibers, thereby dyeing and staying for a long time.

In the above process, the chemical components may cause irritation to the scalp and damage to the hair, resulting in a strong uncomfortable feeling for the user, especially for the user with fragile hair and sensitive scalp. Therefore, there is still a need for improvement.

Disclosure of Invention

In order to reduce the irritation of hair dye to scalp and the damage to hair, the application provides a hair dye with low irritation and a preparation method thereof.

In a first aspect, the present application provides a hair dye with low irritation, which adopts the following technical scheme:

A hair dye with low irritation comprises the following components in percentage by mass: 5-10% of a soft emollient, 1-5% of an emulsifying agent, 1-2.5% of a conditioning agent, 0-1% of an essence, 0.1-1% of a chelating agent, 0.1-1% of a film forming agent, 0-1% of an antioxidant, 0.01-5% of a hair colorant, 1-5% of an alkaline agent, 0.1-2% of an antihistamine, 1-15% of a buffer, 1-5% of a witch hazel extract, 1-5% of trehalose, 0.1-2% of a soapberry extract, 0.1-2% of a kelp extract, and the balance of water to 100%.

Preferably, the antihistamine is palmitoylamide MEA.

Palmitoamide MEA is a naturally occurring lipid that can be found in many different cells of animal, marine and plant origin. In practical research and development, the traditional Chinese medicine composition has certain anti-inflammatory and analgesic effects.

When the hair dye is smeared, the hair dye and the scalp are inevitably contacted, and the user is caused to feel intense pain. The application reduces the pain of users in the hair dyeing process from various aspects by reducing the pH of the hair dye, using a specially selected antihistamine and selecting plant components such as specific witch hazel extract, kelp extract and the like to be matched with trehalose, thereby effectively relieving the irritation of the hair dye to the scalp.

By adopting the technical scheme, under the common coordination of the witch hazel extract, the trehalose and the kelp extract, molecular chains of the trehalose are interwoven, and the witch hazel extract and the kelp extract are wrapped to form particles with a special structure. When the hair dye is smeared on hair, the hair scale is opened by the alkaline agent, the opened hair scale can be further opened by the particles with the special structure, the difficulty of opening the hair scale by the alkaline agent is reduced, the damage caused by forcibly opening the hair scale by the alkaline agent is weakened, and meanwhile, the opening degree of the hair scale is increased. Under the condition of effectively reducing the dosage of the alkaline agent and the hair colorant, the dyeing effect is still good, and the damage to hair is further reduced.

The hair dye is generally left on the hair for 30 minutes. During this retention process, particles of a particular structure will form hydrogen bonds with water molecules in the hair, thereby binding and retaining a significant amount of moisture. When the hair dye is flushed in the subsequent flushing process, residues of the hair dye and the hair colorant are flushed away, and because the particles with the special structure are connected with water molecules of the hair, the particles are not easy to flush away, and the hair dye can be used for keeping moisture and nourishing the hair for a long time. In general, the hair scales are opened due to the need to break the ionic bonds and disulfide bonds of hair proteins by alkaline agents, which can easily lead to serious damage and dryness of hair. Due to the special matching, the problem of dry hair after dyeing is well relieved.

If some of the particles with special structure are washed away, the trehalose in the outer layer and a small amount of Hamamelis mollis extract and thallus laminariae extract in the inner layer are washed away. At this time, the internal Hamamelis mollis extract and thallus laminariae extract are released and absorbed by hair, so as to supplement nutrition to hair and further relieve hair damage and scalp irritation. Since the particles with special structures are finally absorbed by the hair, the problem of excessively spreading the hair scales is not required.

Preferably, the weight percentage of the witch hazel extract in the hair dye is 2-3%, the weight percentage of the trehalose in the hair dye is 3-5%, and the weight percentage of the kelp extract in the hair dye is 0.5-1%.

By adopting the technical scheme, the dosages of the witch hazel extract, the trehalose and the kelp extract in the system are further limited, so that the combination among particles with special structures is more stable and firm, the alkaline agent is facilitated to open the hair scales, and the hair can be further sufficiently nourished and moisturized in the follow-up process.

Preferably, the buffering agent is one or more of ammonium bicarbonate, sodium bicarbonate and ammonium chloride.

By adopting the technical scheme, the buffer is selected to replace a part of alkaline agents (such as ammonia water and monoethanolamine) so as to reduce the pH value, thereby further reducing the irritation of the hair dye to the scalp and the damage of the hair.

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

By adopting the technical scheme, the application generates particles with special structures, so that the dosage of alkaline agent and hair colorant can be greatly reduced. The amount of the hair colorant is reduced, and a small amount of the hair colorant can be fully spread in the cortex layer and firmly combined with the hair, so that the hair colorant has good dyeing effect and reduced irritation to the scalp.

Preferably, the hair dye also comprises a polygonum multiflorum extract, wherein the mass percentage of the polygonum multiflorum extract in the hair dye is 0.1-2%.

By adopting the technical scheme, the polygonum multiflorum extract is further selected and matched with the mesh structure formed by interweaving trehalose, so that the polygonum multiflorum extract can be promoted to nourish hair more fully, and the problems of serious damage and dryness of the hair caused by hair dyeing are relieved.

In a second aspect, the present application provides a method for preparing a hair dye with low irritation, which adopts the following technical scheme: a preparation method of a hair dye with low irritation comprises the following steps:

mixing and stirring water, a softening agent, an emulsifying agent and a conditioning agent until uniform;

Continuously adding chelating agent, film forming agent, antioxidant, hair colorant, alkaline agent, antihistamine, hamamelis mollis extract, trehalose, soapberry extract and thallus laminariae extract into the above mixture, stirring to uniformity;

and then the rest other raw materials are continuously added and stirred until the mixture is uniform, thus obtaining a finished product.

By adopting the technical scheme, various raw materials are put in according to a specific sequence, so that the various raw materials have more sufficient mixing effect, and the structure of the particles is promoted to be more stable.

Preferably, the water, the softener, the emulsifier and the conditioner are mixed in the condition of 75-85 ℃;

Mixing the mixture, chelating agent, film forming agent, antioxidant, hair colorant, alkaline agent, antihistamine, hamamelis mollis extract, trehalose, soapberry extract, and thallus laminariae extract at 60-65deg.C;

Finally, when the rest other raw materials are added, mixing is carried out under the condition of 40-45 ℃.

By adopting the technical scheme, the mixing reaction temperature of each raw material is further limited, and the reaction mixing of each raw material is promoted.

In summary, the application has the following beneficial effects:

1. According to the application, by reducing the pH of the hair dye and using a specially selected antihistamine and selecting plant components such as specific witch hazel extract, kelp extract and the like to be matched with trehalose, the pain of a user in the hair dyeing process is reduced from various aspects, and the irritation of the hair dye to the scalp is effectively relieved; in addition, the witch hazel extract, the kelp extract and other plant components can be absorbed by the scalp to supplement nutrition for the scalp, so that a good moisturizing effect is achieved, and the irritation to the scalp is further relieved.

2. Under the common coordination of the witch hazel extract, the trehalose and the kelp extract, molecular chains of the trehalose are interwoven, and the witch hazel extract and the kelp extract are wrapped to form particles with a special structure. The particle with the special structure can assist the alkaline agent to further prop open the opened hair scales, so that the difficulty of opening the hair scales by the alkaline agent is reduced, the opening degree of the hair scales is increased, and the good dyeing effect is still maintained and the irritation is further reduced under the condition of effectively reducing the consumption of the alkaline agent and the hair colorant.

3. The hair dye has special structure particles, and can be connected with water molecules of hair in a special way, so that the particles are not easy to wash away, the hair dye can keep moisture and nourish the hair for a long time, and the problem of dry hair after dyeing is well relieved.

Detailed Description

The present application will be described in further detail with reference to examples.

The raw materials used in the following examples and comparative examples are all commercially available products.

Examples

Example 1

A hair dye with low irritation, which comprises the following components: a emollient, an emulsifier, a conditioner, an essence, a chelating agent, a film forming agent, an antioxidant, a hair colorant, an alkaline agent, an antihistamine, a buffer, a witch hazel extract, trehalose, a soapberry extract, a kelp extract, and water.

The emollient is cetostearyl alcohol.

The emulsifier is cetostearyl alcohol polyether-25.

The conditioner is cetrimide solution. The active ingredient of the cetrimide solution is cetrimide with the content of 70 percent; the solvent is ethanol.

The chelating agent is disodium EDTA.

The film forming agent is polyquaternium-10.

The antioxidant is sodium ascorbate and sodium sulfite.

The hair colorant is toluene-2, 5-diamine sulfate, resorcinol, 2, 4-diaminophenoxy ethanol HCl, 4-amino-2-hydroxytoluene.

The alkaline agent is ammonia water.

The antihistamine is palmitoylamide MEA.

The buffer is ammonium bicarbonate.

Hamamelis mollis extract is commercially available from Shanyang Union Peak Biotechnology Co., ltd., 80-100 mesh.

Trehalose is commercially available from the biotechnology company of Hua Tangju r.

Soapberry fruit extract is commercially available from the western Anzhaxin biotechnology company.

The kelp extract is commercially available from the company of Sitavid biotechnology, inc.

The specific amounts of the raw materials are shown in Table 1.

The embodiment of the application also discloses a preparation method of the hair dye with low irritation, which comprises the following steps:

Step (1): sequentially adding water, a softening agent, an emulsifying agent and a conditioning agent into a reaction kettle, heating to 80 ℃, starting to homogenize for 8 minutes, and then starting to stir until the components are completely dissolved.

Step (2): cooling to 60deg.C, sequentially adding chelating agent, film forming agent, antioxidant, hair colorant, alkali agent, antihistamine, hamamelis mollis extract, trehalose, soapberry extract, and thallus laminariae extract into the reaction kettle, homogenizing to dissolve completely, and stirring.

Step (3): cooling to 40deg.C, adding the rest other materials into the reaction kettle, and stirring to obtain hair dye.

Example 2

A hair dye with low irritation is different from example 1 in that,

The buffer is the mixture of sodium bicarbonate and ammonium chloride, and the mixing ratio of the sodium bicarbonate to the ammonium chloride is 1:1.

The alkaline agent is monoethanolamine.

The hair colorant is 2, 5-diamine toluene sulfate and resorcinol.

The specific amounts of the raw materials are different, and are shown in Table 1 in detail.

Step (1): sequentially adding water, a softening agent, an emulsifying agent and a conditioning agent into a reaction kettle, heating to 85 ℃, starting to homogenize for 5 minutes, and then starting to stir until the components are completely dissolved.

Step (2): cooling to 65deg.C, sequentially adding chelating agent, film forming agent, antioxidant, hair colorant, alkali agent, antihistamine, hamamelis mollis extract, trehalose, soapberry extract, and thallus laminariae extract into the reaction kettle, homogenizing to dissolve completely, and stirring.

Step (3): cooling to 45deg.C, adding the rest other materials into the reaction kettle, and stirring to obtain hair dye.

Example 3

A hair dye with low irritation is different from example 1 in that,

The buffer is ammonium chloride.

The hair colorant is 2, 5-diamine toluene sulfate and 4-amino-2-hydroxy toluene.

Step (1): sequentially adding water, a softening agent, an emulsifying agent and a conditioning agent into a reaction kettle, heating to 75 ℃, starting to homogenize for 10 minutes, and then starting to stir until the components are completely dissolved.

Example 4

A hair dye with low irritation is different from example 1 in that,

The Hamamelis mollis extract is 2kg, trehalose is 3kg, and thallus laminariae extract is 0.5kg.

Resorcinol was 0.01kg,2, 4-diaminophenoxyethanol HCl was 0.05kg, and 4-amino-2-hydroxytoluene was 0.05kg.

Example 5

A hair dye with low irritation is different from example 1 in that,

The Hamamelis mollis extract is 3kg, trehalose is 5kg, and thallus laminariae extract is 1kg.

Resorcinol was 0.08kg,2, 4-diaminophenoxyethanol HCl was 0.2kg, and 4-amino-2-hydroxytoluene was 0.2kg.

Example 6

A hair dye with low irritation is different from that of example 1 in that Hamamelis mollis extract is 5kg, trehalose is 1kg, and thallus laminariae extract is 1.5kg.

TABLE 1

Example 7

A hair dye having low irritation is different from example 1 in that the buffer is replaced with water, i.e., 0, and 72.95kg of water.

Example 8

A hair dye with low irritation is different from that of example 1 in that the extract of Polygonum multiflorum is replaced with water, namely the extract of Polygonum multiflorum is 0, and the water is 63.95kg.

Comparative example

Comparative example 1

A hair dye with low irritation is different from that of example 1 in that the Hamamelis mollis extract is replaced with herba Portulacae extract, i.e. Hamamelis mollis extract is 0, and herba Portulacae extract is 2.5kg.

The purslane extract is commercially available and purchased from Shanyang associated peak biotechnology company.

Comparative example 2

A hair dye with low irritation is different from example 1 in that trehalose is replaced with corn starch, i.e., trehalose is 0 and corn starch is 4kg.

Corn starch is commercially available from mountain eastern Anquan chemical technology Co.

Comparative example 3

A hair dye with low irritation is different from that of example 1 in that the thallus laminariae extract is replaced with herba Centellae extract, i.e. 0, and 0.8kg.

Centella asiatica extract is commercially available from Fufeng Stokes Biotech Inc.

Comparative example 4

A hair dye with low irritation is different from that of example 1 in that Hamamelis mollis extract is 0.5kg, trehalose is 0.5kg, and thallus laminariae extract is 6.3kg.

Comparative example 5

A hair dye with low irritation is different from that of example 1 in that Hamamelis mollis extract, trehalose, thallus laminariae extract, buffer, and Polygoni Multiflori radix extract are replaced with water.

Performance test

1. Human body detection: the hair dyes of examples 1 to 8 and comparative examples 1 to 5 were mixed with 6 degree dioxygen milk at a ratio of 1:1 to obtain a mixture to be tested.

39 Volunteers were selected and divided into 13 groups, one group of 3 persons, one group corresponding to each of the mixtures tested.

The hair of the volunteer was cleaned with water, and after wiping, the mixture to be tested was uniformly applied to the area to be tested, and left for 30min. And then washing the mixture to be tested with clear water.

Volunteers were scored in a scale of 1-10, the higher the score, the higher the stimulation level, the lower the score, the lower the stimulation level, and the average score of the same group of volunteers was recorded as the test result of this group in table 2.

At the same time, the volunteers were observed for vivid and even hair after dyeing and recorded in Table 2.

2. Moisturizing effect:

The hair dyes of examples 1 to 8 and comparative examples 1 to 5 were mixed with 6 degree dioxygen milk at a ratio of 1:1 to obtain a mixture to be tested.

An isolated hair bundle of a real person with a length of 15.2cm and a weight of 5g was prepared, the hair bundle was immersed in tap water at normal temperature (about 20-25 ℃) for 5 seconds, and the hair was combed with a small-tooth comb, and the tangled hair was separated.

And then uniformly smearing 10g of the mixture to be tested on the hair bundle, dyeing the hair, and standing for 30min.

And cleaning the hair bundle with clear water, and rinsing for 1min to obtain the dyed hair bundle.

The dyed hair tress was placed in an environment with 45% humidity and 25 ℃ for 24 hours, and then the dyed hair tress was detected using a moisture analyzer (MS 310-S), and the detection results were recorded in table 2.

The 3 real human hair bundles are a group corresponding to one mixture to be tested.

3. Degree of hair damage:

The dyed hair tresses were tested according to T/GDCDC 012-2020 method for evaluating the strength and toughness efficacy of Hair products, and tensile strengths were recorded in Table 2; a high tensile strength indicates a low degree of damage to the hair.

TABLE 2

Comparative example 5 is a hair dye obtained by adding no Hamamelis extract, trehalose, thallus laminariae extract, buffer, or Polygoni Multiflori radix extract to the composition of example 1. From comparison of the test data of example 1 and comparative example 5 in table 2, it is understood that the use of the hair dye of example 1 can significantly reduce irritation while maintaining good dyeing effect, and has good moisturizing effect on hair with a small damage degree of dyed hair.

As can be seen from comparison of the test data of example 1 and comparative examples 1-3 in Table 2, the hair dye prepared by optionally replacing Hamamelis mollis extract, trehalose and thallus laminariae extract with other raw materials, which is provided by the application, can not effectively reduce irritation and can not improve the problems of dry and damaged hair after dyeing.

Comparative example 4 is a hair dye prepared by arbitrarily changing the specific proportions of Hamamelis mollis extract, trehalose and thallus laminariae extract in the system based on example 1. As can be seen from the examination data of examples 1, comparative examples 1 to 3 and comparative example 4 in Table 2, although comparative example 4 has better performance than comparative examples 1 to 3 in all respects, it is clearly not comparable to example 1.

The technical scheme provided by the embodiment of the application is illustrated as an organic whole. Not only the special combination of the witch hazel extract, the trehalose and the kelp extract is limited, but also the three components are required to keep a specific dosage coordination relationship in the system. The hair dye prepared by arbitrarily changing the raw materials or the dosage matching relationship can not reduce the irritation, improve the dry hair after dyeing and the like.

In example 6, the dosage matching relationship among the witch hazel extract, the trehalose and the kelp extract is changed on the basis of example 1, but the change range is smaller, and the dosage matching of the witch hazel extract, the trehalose and the kelp extract is still within a certain preferred range. Thus, as can be seen from comparison of the test data of example 1 and example 6 in table 2, the hair dye of example 6 still maintains a certain low irritation and also reduces the damage degree of the dyed hair, but the effect is not as remarkable as that of example 1. The explanation further limits the dosage of Hamamelis mollis extract, trehalose and thallus laminariae extract in the system, which is favorable for fully exerting the special compounding effect of the three.

As can be seen from comparison of the test data of example 1 and examples 7 and 8 in Table 2, the addition of the polygonum multiflorum extract to the system, further defined as a buffer, is effective in improving the protection effect on the dyed hair.

The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.

Claims

1. The hair dye with low irritation is characterized by comprising the following components in percentage by mass:

5-10% of a soft emollient, 1-5% of an emulsifying agent, 1-2.5% of a conditioning agent, 0-1% of an essence, 0.1-1% of a chelating agent, 0.1-1% of a film forming agent, 0-1% of an antioxidant, 0.01-5% of a hair colorant, 1-5% of an alkaline agent, 0.1-2% of an antihistamine, 1-15% of a buffer, 1-5% of a witch hazel extract, 1-5% of trehalose, 0.1-2% of a soapberry extract, 0.1-2% of a kelp extract, and the balance of water to 100%;

the antihistamine is palmitoylamide MEA.

2. The low-irritation hair dye according to claim 1, wherein: the weight percentage of the witch hazel extract in the hair dye is 2-3%, the weight percentage of the trehalose in the hair dye is 3-5%, and the weight percentage of the kelp extract in the hair dye is 0.5-1%.

3. The low-irritation hair dye according to claim 1, wherein: the buffering agent is one or more of ammonium bicarbonate, sodium bicarbonate and ammonium chloride.

4. The low-irritation hair dye according to claim 1, wherein: the hair colorant is one or more of resorcinol, 2, 4-diaminophenoxyethanol HCl, 4-amino-2-hydroxytoluene, p-phenylenediamine, m-aminophenol, N-bis (2-hydroxyethyl) p-phenylenediamine sulfate, p-aminophenol, 1-hydroxyethyl-4, 5-diaminopyrazole sulfate, 2-amino-3-hydroxypyridine, toluene-2, 5-diamine sulfate.

5. The low-irritation hair dye according to claim 1, wherein: also comprises Polygoni Multiflori radix extract, wherein the mass percentage of Polygoni Multiflori radix extract in hair dye is 0.1-2%.

6. A method for preparing a hair dye with low irritation according to any one of claims 1 to 5, comprising the steps of:

7. The method for preparing a hair dye with low irritation according to claim 6, wherein: the water, the softener, the emulsifier and the conditioner are mixed in the condition of 75-85 ℃;