CN113730277A

CN113730277A - Composition for repairing scalp skin barrier and application thereof

Info

Publication number: CN113730277A
Application number: CN202111199683.4A
Authority: CN
Inventors: 黄伟
Original assignee: Tisong Daily Chemical Products Guangzhou Co ltd
Current assignee: Tisong Daily Chemical Products Guangzhou Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2021-12-03

Abstract

The invention relates to a composition for repairing a scalp skin barrier and application thereof, wherein the composition for repairing the scalp skin barrier comprises 0.1-10 parts by mass of cocamidopropyl-PG-dimethylammonium chloride phosphate, 0.1-4 parts by mass of phytosterol ester and 0.1-4 parts by mass of phytosphingosine. The composition can supplement easily lost lipid components such as phospholipid, and maintain good lipid level in scalp stratum corneum; meanwhile, the scalp is moistened, a moistening breathable layer is formed on the surface layer of the scalp, and the percutaneous water loss (TEWL) is reduced; the protection of the horny layer is enhanced, so that the keratinocytes are not easy to separate and shed; therefore, the scalp barrier repairing effect is achieved, the problems of dandruff, damaged hair follicles and easy hair falling are prevented and solved, and the smoothness and flexibility of the hair are improved.

Description

Composition for repairing scalp skin barrier and application thereof

Technical Field

The invention belongs to the technical field of daily chemical products, and particularly relates to a composition for repairing a scalp skin barrier and an application thereof, in particular to a composition for repairing the scalp skin barrier, moistening the scalp, inhibiting the growth of microorganisms, removing dandruff and relieving itching and an application thereof in preparing a shampoo product.

Background

With the improvement of consumption level and living standard, the demand of consumers on high-end washing and protecting products is increasing day by day, so the market also puts higher demands on the hair washing and protecting products. The problems of the hair and the scalp include: the environment and shampoo stimulate the scalp to cause phenomena of pruritus, dandruff, even alopecia and the like, and meanwhile, the hair also has the problems of hair cuticle oil reduction, dryness, hair breakage, poor toughness and the like caused by keratin fiber damage.

Along with the continuous improvement of environmental pollution and living pressure of people, the stimulation of traditional surfactants in shampoo and chemical injury caused by bleaching and dyeing, the proportion of people with sensitive scalp is also continuously increased. Scalp barrier damage is one of the causes of dandruff. The dandruff population has reduced lipid levels in the stratum corneum of the scalp, high transepidermal water loss (TEWL), reduced peripheral keratinized desmosomes, easier separation and shedding of keratinocytes, and flaky dandruff shedding. Most of the anti-dandruff shampoos on the market today inhibit malassezia or exfoliate the formed dandruff by adding an anti-dandruff agent. Both of these approaches can be product dependent and the problem of dandruff can be exacerbated once the product is removed from service. The new research shows that the colonization ratio of healthy scalp to malassezia on the scalp of a dandruff patient does not change obviously, so the colonization of microorganisms is one factor, but the strengthening of the scalp barrier is another important factor for preventing and solving the dandruff problem.

Meanwhile, the damage of the barrier also causes the problems of pruritus, damaged hair follicles and easy shedding of hairs, so that the development of a washing and caring product for repairing the scalp barrier is urgently needed.

The hair is a natural fiber composed of keratin, mainly composed of cuticle, cortex and medulla, the layers are connected by Cell Membrane Complex (CMC), the hair surface also has a hydrophobic structure, mainly composed of lipid 18-methyl eicosanoic acid (18-MEA) covalently bonded with the outer skin, the lipid structure can reduce the friction force of hair and maintain the hydrophobicity of hair. With the fast-paced living frequency in cities, consumers have higher and higher hair washing frequency, and researches show that 50% of extractable lipid in hair is washed away by each hair washing, and the layer of 18-MEA hydrophobic structure on the surface of the hair is partially washed away in the hair washing process, so that the smoothness and the integrity of the hair are reduced, and further damage to hair scales is caused. In the market, conditioner such as silicone oil is used for conditioning hair to improve combing property, but the silicone oil is only attached to the surface of the hair, and the problem is not solved fundamentally.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a composition for repairing scalp skin barrier and application thereof, in particular to a composition for repairing scalp skin barrier, moistening scalp, inhibiting microbial growth, removing dandruff and relieving itching and application thereof in preparing shampoo products.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, the present invention provides a composition for repairing a scalp skin barrier, which comprises, in parts by mass, 0.1 to 10 parts of cocamidopropyl-PG-dimethylammonium chloride phosphate, 0.1 to 4 parts of phytosterol ester, and 0.1 to 4 parts of phytosphingosine.

The invention develops a brand-new composition for repairing scalp skin barriers, which can repair tough hair from the root, repair scalp barriers, inhibit dandruff formation and simultaneously maintain the scalp and the hair. The cocoamidopropyl-PG-dimethyl ammonium chloride phosphate ester is also called a natural bionic phospholipid derivative, has good affinity with skin, has a certain repairing function on damaged skin and hair, can supplement phospholipid and grease lost by the skin, and is a very mild amphoteric surfactant; the phytosterol ester is generally prepared by esterification reaction or transesterification reaction of phytosterol and fatty acid, has better affinity to skin, is easier to permeate, is easy to emulsify, has good health care function, and has strong repairing effect on damaged cell cutin; the phytosphingosine is similar to skin lipid and is an important component for water retention and barrier function, the phytosphingosine is one of important oil components in human epidermis, the external phytosphingosine has the functions of efficiently keeping the skin soft and moist and protecting the cortex, and the phytosphingosine has antibacterial property and anti-inflammatory effect.

The composition for repairing the scalp skin barrier creatively combines the cocamidopropyl-PG-dimethylammonium chloride phosphate, the phytosterol ester and the phytosphingosine according to a specific mass ratio, and has a remarkable synergistic effect on the following technical effects. The composition can supplement easily lost lipid components such as phospholipid, and maintain good lipid level in scalp stratum corneum; meanwhile, the scalp is moistened, a moistening breathable layer is formed on the surface layer of the scalp, and the percutaneous water loss (TEWL) is reduced; the protection of the horny layer is enhanced, so that the keratinocytes are not easy to separate and shed; therefore, the scalp barrier repairing effect is achieved, the problems of dandruff, damaged hair follicles and easy hair falling are prevented and solved, and the smoothness and flexibility of the hair are improved.

The mass parts of the cocamidopropyl-PG-dimethyl ammonium chloride phosphate can be 0.1 part, 0.5 part, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 7 parts, 10 parts and the like.

The mass portion of the phytosterol ester can be 0.1 portion, 0.5 portion, 1 portion, 1.5 portions, 2 portions, 2.5 portions, 3 portions, 3.5 portions, 4 portions and the like.

The phytosphingosine can be 0.1 part, 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts and the like by mass.

Other specific point values within the above numerical ranges can be selected, and are not described in detail herein.

Preferably, the phytosterol ester comprises any one of phytosterol isostearate, phytosterol oleate, phytosterol/octyldodecanol lauroyl glutamate or a combination of at least two of the same; the combination of at least two of the phytosterols, such as the combination of phytosterol isostearate and phytosterol oleate, the combination of phytosterol oleate and phytosterol/octyldodecanol lauroyl glutamate, the combination of phytosterol isostearate and phytosterol/octyldodecanol lauroyl glutamate, and the like, can be selected in any combination mode, and is not repeated herein.

A combination of phytosterol isostearate, phytosterol oleate and phytosterol/octyldodecanol lauroyl glutamate is preferred.

The phytosterol ester component in the composition for repairing scalp skin barrier according to the invention is preferably the combination of phytosterol isostearate, phytosterol oleate and phytosterol/octyldodecanol lauroyl glutamate, so that the composition has better effects on maintaining the lipid level in the stratum corneum of the scalp, reducing the loss of moisture through the skin, strengthening the protection of the stratum corneum, repairing the scalp barrier, preventing and solving dandruff, and increasing the smoothness and flexibility of hair.

Preferably, the composition for repairing the scalp skin barrier further comprises 0.5-6 parts by mass of an auxiliary efficacy component, such as 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 6 parts and the like, and other specific points in the numerical range can be selected, so that the detailed description is omitted; the auxiliary functional component comprises one or a combination of at least two of lauryl lactate, olive fruit oil, hydrogenated jojoba oil, panthenol and tocopherol acetate.

Further, the addition of the auxiliary efficacy ingredients to the composition for repairing scalp skin barrier according to the present invention can promote the above-mentioned beneficial effects. The lauryl lactate has an excellent moisturizing effect, can reduce sticky feeling and greasy feeling brought by other heavy grease petrolatum, can provide non-greasy lubricity, and is easy to emulsify; olive oil can repair damaged bifurcate hair, and also assist in closure of hair scales; the hydrogenated jojoba oil is easy to be absorbed by skin, can be mixed with the skin ester, does not leave greasy feeling after being used, has good water solubility, is easy to be applied to shampoo and bath lotion, and has good solubilizing effect on other active ingredients; panthenol can be used as lubricant for improving hair quality; the tocopherol acetate is a skin regulator and an antioxidant, prevents the oxidative failure of active substances, and has the protection effect of preventing the skin and hair from being damaged by sunlight ultraviolet rays. The auxiliary functional components are matched with each other to promote each other, and have a certain synergistic effect on the aspect of repairing scalp barriers.

The combination of at least two of the above compounds, such as the combination of lauryl lactate and olive fruit oil, the combination of olive fruit oil and hydrogenated jojoba oil, the combination of panthenol and tocopheryl acetate, and the like, can be selected in any combination manner, and are not repeated herein.

Preferably, the auxiliary efficacy ingredient comprises a combination of lauryl lactate, olive fruit oil, hydrogenated jojoba oil, panthenol and tocopheryl acetate.

In a second aspect, the present invention provides the use of a composition for repairing a scalp skin barrier according to the first aspect in the manufacture of a shampoo product comprising a shampoo, a conditioner or a hair cream.

Preferably, the composition for repairing the scalp skin barrier is contained in the shampoo product in an amount of 0.5-15% by mass, such as 0.5%, 1%, 2%, 3%, 5%, 6%, 8%, 10%, 12%, 14%, 15%, etc., and other specific values within the range of values can be selected, which is not repeated herein.

In a third aspect, the present invention provides a shampoo for repairing scalp skin barrier, which comprises the composition for repairing scalp skin barrier according to the first aspect and a base additive.

Preferably, the base additive includes any one of a surfactant, a chelating agent, a thickener, an antistatic agent, a foam stabilizer, a pearlescent agent, a pH adjuster, a preservative, a perfume, or a combination of at least two thereof. The combination of at least two of the above components, such as the combination of a surfactant and a chelating agent, the combination of a thickener and an antistatic agent, the combination of a pearling agent, a pH regulator and a preservative, can be selected in any combination manner, and is not described in detail herein.

Preferably, the surfactant comprises any one of or a combination of at least two of sodium fatty alcohol polyoxyethylene ether sulfate, cocamidopropyl betaine, sodium cocoyl isethionate or alkyl glycoside.

The combination of at least two of the above compounds, such as the combination of sodium fatty alcohol polyoxyethylene ether sulfate and cocamidopropyl betaine, the combination of cocamidopropyl betaine and sodium cocoyl isethionate, the combination of sodium cocoyl isethionate and alkyl glycoside, etc., can be selected in any combination manner, and will not be described in detail herein.

Preferably, the chelating agent comprises disodium EDTA.

Preferably, the thickener comprises cocomethyl monoethanolamide.

Preferably, the antistatic agent comprises cationic guar.

In a fourth aspect, the present invention provides a method for preparing a shampoo for repairing a skin barrier of a scalp according to the third aspect, wherein the method for preparing the shampoo comprises:

(1) mixing cation guar gum and water, homogenizing and stirring, mixing with sodium fatty alcohol-polyoxyethylene ether sulfate and sodium cocoyl isethionate, dispersing, and heating to obtain a matrix A;

(2) mixing and stirring the matrix A, the cocamidopropyl betaine, the alkyl glycoside and the pearlescent agent to obtain a matrix B;

(3) mixing and stirring the matrix B and the composition for repairing the scalp skin barrier to obtain a matrix C;

(4) mixing the matrix C with chelating agent, thickener, antiseptic and essence, and adjusting pH with pH regulator.

Preferably, the heating in step (1) is performed to 75-90 ℃, such as 75 ℃, 78 ℃, 80 ℃, 82 ℃, 84 ℃, 85 ℃, 87 ℃, 88 ℃, 90 ℃ and the like, and other specific values in the numerical range can be selected, which is not described in detail herein.

Preferably, the mixing and stirring in step (2) is carried out at 75-90 deg.C, such as 75 deg.C, 78 deg.C, 80 deg.C, 82 deg.C, 84 deg.C, 85 deg.C, 87 deg.C, 88 deg.C, 90 deg.C, etc.; and then, the temperature is kept for 20-40min, for example, 20min, 25min, 30min, 35min, 40min and the like, and other specific point values in the numerical range can be selected, so that the description is omitted.

Preferably, the mixing and stirring in step (3) is performed at 30-50 ℃, for example, 30 ℃, 35 ℃, 40 ℃, 45 ℃, 50 ℃ and the like, and other specific values in the numerical range can be selected, which is not described in detail herein.

Preferably, in step (4), the pH is adjusted to 4.0-8.0, for example, pH 4.5, pH 5.0, pH 5.5, pH 6.0, pH 6.5, pH 7.0, pH 7.5, and the like, and specific values within the range of the values may be selected, which is not described in detail herein.

The preparation process of the shampoo for repairing the scalp skin barrier is simple and easy to operate, the shampoo is suitable for large-scale industrial production, and under the cooperation of the technical parameters, the prepared shampoo has lasting system stability while ensuring the effect of repairing the scalp barrier.

Compared with the prior art, the invention has the following beneficial effects:

Detailed Description

To further illustrate the technical means and effects of the present invention, the following further describes the technical solution of the present invention with reference to the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.

The following raw material information in the examples, comparative examples, application examples and comparative application examples is as follows:

example 1

The embodiment provides a composition for repairing scalp skin barrier, which consists of 2 parts of cocamidopropyl-PG-dimethyl ammonium chloride phosphate, 0.8 part of phytosterol isostearate, 0.6 part of phytosterol oleate, 1 part of phytosterol/octyldodecanol lauroyl glutamate and 0.2 part of phytosphingosine, and the preparation method is simple and uniform physical mixing.

Example 2

The embodiment provides a composition for repairing scalp skin barrier, which consists of 4 parts of cocamidopropyl-PG-dimethyl ammonium chloride phosphate, 1.5 parts of phytosterol isostearate, 2 parts of phytosterol oleate, 0.1 part of phytosterol/octyldodecanol lauroyl glutamate and 0.1 part of phytosphingosine, and the preparation method is simple and uniform physical mixing.

Example 3

The embodiment provides a composition for repairing scalp skin barrier, which consists of 1 part of cocamidopropyl-PG-dimethyl ammonium chloride phosphate, 0.1 part of phytosterol isostearate, 0.2 part of phytosterol oleate, 2 parts of phytosterol/octyldodecanol lauroyl glutamate and 1 part of phytosphingosine, and the preparation method is simple and uniform physical mixing.

Example 4

The embodiment provides a composition for repairing scalp skin barrier, which consists of 8 parts of cocamidopropyl-PG-dimethyl ammonium chloride phosphate, 2.5 parts of phytosterol isostearate, 2 parts of phytosterol oleate, 3 parts of phytosterol/octyldodecanol lauroyl glutamate and 2 parts of phytosphingosine.

Example 5

This example provides a composition for repairing scalp skin barrier which differs from example 1 only in that "phytosterol isostearate 0.8 parts, phytosterol oleate 0.6 parts, phytosterol/octyldodecanol lauroyl glutamate 1 part" was replaced with phytosterol isostearate and phytosterol oleate in a mass ratio of 4:3, which is equivalent to the total mass thereof. The preparation method is simple and uniform in physical mixing.

Example 6

This example provides a composition for repairing the skin barrier of the scalp, which differs from example 1 only in that "phytosterol isostearate 0.8 parts, phytosterol oleate 0.6 parts, phytosterol/octyldodecanol lauroyl glutamate 1 parts" was replaced with phytosterol isostearate and phytosterol/octyldodecanol lauroyl glutamate in a mass ratio of 4:5, which is equivalent to the total mass thereof. The preparation method is simple and uniform in physical mixing.

Example 7

This example provides a composition for repairing the skin barrier of the scalp, which differs from example 1 only in that "phytosterol isostearate 0.8 parts, phytosterol oleate 0.6 parts, phytosterol/octyldodecanol lauroyl glutamate 1 parts" was replaced with phytosterol oleate and phytosterol/octyldodecanol lauroyl glutamate in a mass ratio of 3:5, which is equivalent to the total mass thereof. The preparation method is simple and uniform in physical mixing.

Example 8

This example provides a composition for repairing scalp skin barrier which differs from example 1 only in that "phytosterol isostearate 0.8 parts, phytosterol oleate 0.6 parts, phytosterol/octyldodecanol lauroyl glutamate 1 part" is replaced with phytosterol isostearate in an amount equivalent to the total mass thereof. The preparation method is simple and uniform in physical mixing.

Example 9

This example provides a composition for repairing scalp skin barrier which differs from example 1 only in that "0.8 part of phytosterol isostearate, 0.6 part of phytosterol oleate, 1 part of phytosterol/octyldodecanol lauroyl glutamate" is replaced with phytosterol oleate in an amount equivalent to the total mass thereof. The preparation method is simple and uniform in physical mixing.

Example 10

This example provides a composition for repairing the skin barrier of the scalp which differs from example 1 only in that "phytosterol isostearate 0.8 parts, phytosterol oleate 0.6 parts, phytosterol/octyldodecanol lauroyl glutamate 1 parts" was replaced with phytosterol/octyldodecanol lauroyl glutamate in an amount equivalent to the total mass thereof. The preparation method is simple and uniform in physical mixing.

Example 11

The embodiment provides a composition for repairing scalp skin barrier, which consists of 2 parts of cocamidopropyl-PG-dimethyl ammonium chloride phosphate, 0.8 part of phytosterol isostearate, 0.6 part of phytosterol oleate, 1 part of phytosterol/octyldodecanol lauroyl glutamate, 0.2 part of phytosphingosine, 0.8 part of lauryl lactate, 0.5 part of olive oil, 0.2 part of hydrogenated jojoba oil, 0.2 part of panthenol and 0.5 part of tocopherol acetate.

Example 12

This example provides a composition for repairing scalp skin barrier which differs from example 11 only in that 0.2 parts of hydrogenated jojoba oil is not included and 0.7 parts of olive oil is included. The other components and contents were kept unchanged. The preparation method is simple and uniform in physical mixing.

Example 13

This example provides a composition for repairing scalp skin barrier which differs from example 11 only in that it does not contain olive oil 0.2 parts and hydrogenated jojoba oil 0.7 parts. The other components and contents were kept unchanged. The preparation method is simple and uniform in physical mixing.

Comparative example 1

This comparative example provides a composition which differs from example 1 only in that it does not contain the cocamidopropyl-PG-dimethylammonium chloride phosphate component and the mass ratio of phytosterol esters to phytosphingosine remains the same. The preparation method is simple and uniform in physical mixing.

Comparative example 2

This comparative example provides a composition which differs from example 1 only in that it does not contain a phytosterol ester ingredient and the mass ratio of cocamidopropyl-PG-dimethylammonium chloride phosphate to phytosphingosine remains the same. The preparation method is simple and uniform in physical mixing.

Comparative example 3

This comparative example provides a composition which differs from example 1 only in that it does not contain a phytosphingosine component and the mass ratio of cocamidopropyl-PG-dimethylammonium chloride phosphate to phytosterol esters is maintained. The preparation method is simple and uniform in physical mixing.

Application example 1

The application example provides shampoo for repairing scalp skin barrier, and the formula of the shampoo is shown in the following table:

the preparation method comprises the following steps:

(1) mixing cation guar gum and water, homogenizing and stirring, mixing with sodium fatty alcohol-polyoxyethylene ether sulfate and sodium cocoyl isethionate, dispersing for 20min, and heating to 80 ℃ to obtain a matrix A;

(2) mixing matrix A with cocamidopropyl betaine, alkyl glycoside, and pearling agent at 80 deg.C, stirring for 10min, and keeping the temperature for 30min to obtain matrix B;

(3) mixing matrix B and active substance at 40 deg.C, stirring for 20min to obtain matrix C;

(4) mixing matrix C with chelating agent, thickener, antiseptic and essence at 40 deg.C for 10min, and adjusting pH to 6.0 with pH regulator.

Application example 2

the preparation process is as in application example 1.

Application example 3

the preparation process is as in application example 1.

Application examples 4 to 13

The present application example provides ten shampoos for repairing scalp skin barrier, the formulation of which differs from application example 1 only in that the composition of example 1 is replaced with the compositions of examples 4-13, respectively. The preparation process is as in application example 1.

Comparative application examples 1 to 3

This comparative application example provides three shampoos for repairing scalp skin barrier, the formulation of which differs from application example 1 only in that the composition of example 1 is replaced with the compositions of comparative examples 1 to 3, respectively. The preparation process is as in application example 1.

Test example 1

Human body patch test:

the test substance: the invention applies to shampoo 1-13;

subject: a total of 30 people, 15 men and 15 women, aged 20-50 years, meeting the volunteer enrollment criteria of the subject;

the test method comprises the following steps: placing the tested object in a proper spot sticking device by adopting a closed test method, sticking the tested object on the arm curve side of the tested object by using a hypoallergenic adhesive tape, and lightly pressing the tested object by using a palm to uniformly stick the tested object on the skin for 24 hours; the blank control group was subject without product;

and (4) observing results: the test devices were removed after 24 hours, skin reactions were observed after 0.5h, 24h, 48h, respectively, and the results were recorded. The grade of the adverse reaction of the skin is shown in Table 1, and the test results are shown in Table 2.

TABLE 1

TABLE 2

As can be seen from the data in Table 2: the shampoo containing the composition for repairing the scalp barrier does not have adverse skin reactions, and the composition and the shampoo for repairing the scalp barrier are safe and have no stimulation.

The shampoo prepared by the application examples 1-13 and the comparative application examples 1-3 is subjected to effect evaluation, 160 volunteers with dandruff and head itching problems are selected in the test, the test is divided into 16 groups randomly, 10 groups are formed, after the initial TEWL and the hair contact angle and smoothness are tested, the shampoo prepared by the application examples 1-13 and the comparative application examples 1-3 is used once every 3 days, the TEWL test and the dandruff removing effect evaluation are respectively carried out after 5 times and 10 times of use, the hair contact angle and the smoothness evaluation are carried out after 10 times of use, and the specific content is shown in test examples 2-4:

test example 2

Evaluation of percutaneous Water loss (TEWL) reducing Effect:

the TEWL was tested using a multi-probe skin tester Cutomer (MPA580, C + K, Germany), and the tester stood still for 30min after shampooing, and selected a scalp-specified area for TEWL, the more intact the skin protection layer, the lower the value of TEWL for skin moisture loss. The test results divided the TEWL lowering values into four levels, 0, 1-3, 4-7, 8-10, and the number of people in each level was recorded. The results are shown in Table 3:

TABLE 3

From the results in Table 3, it can be seen that: compared with a comparative application example, after the shampoo containing the scalp barrier repairing composition disclosed by the invention is used by volunteers, the TEWL value is obviously reduced; compared with 5 times of use, after 10 times of use, the proportion of reducing the TEWL value by 7-10 ranges is greatly improved, and the barrier repair effect is obvious. And the composition formula of the scalp barrier repairing composition obviously influences the effects of the scalp barrier repairing composition on reducing the percutaneous water loss.

Test example 3

Evaluation of anti-dandruff effect:

the volunteers fill in the evaluation table after using the product, the evaluation is divided into four grades of significant effectiveness, generality and ineffectiveness, and the number of people at each grade is recorded. The results are shown in Table 4:

TABLE 4

From the results in Table 4, it can be seen that: compared with the comparative application example, after the shampoo containing the scalp barrier repairing composition is used by volunteers, the anti-dandruff effect is obviously improved. And the compositional formulation of the repair scalp barrier composition significantly affects its effectiveness in removing dandruff.

Test example 4

Evaluation of hair contact angle and smoothness:

the contact angle can be used for representing the hydrophilicity and hydrophobicity of the surface of the hair, the larger the contact angle is, the better the hydrophobicity of the hair is, the higher the health degree of the hair is, 5 hairs are randomly selected by each volunteer, deionized water is used for the contact angle test, the change condition of the contact angle before and after shampoo use is compared, the contact angle is divided into 3 grades (the change amplitude is within 0.1%, the change amplitude is larger and smaller), and the number of people in each grade is recorded. The results are shown in Table 5.

The smoothness was determined by the coefficient of friction, and each volunteer randomly selected 10 hairs, arranged and fixed on a slide, combed and slid with a probe from the root to the tip of the hair, measured the average coefficient of friction, divided into three grades (below 0.15, 0.15-0.20, above 0.20), and recorded the number of people at each grade. The results are shown in Table 5.

TABLE 5

From the results in Table 5, it can be seen that: compared with the comparative application example, the hydrophobicity and smoothness of the hair of the volunteers are obviously improved after the shampoo containing the scalp barrier repairing composition is used. And the compositional formulation of the repair scalp barrier composition significantly affects its effectiveness in terms of hydrophobicity and smoothness of the hair.

The applicant states that the present invention is illustrated by the above examples to a composition for repairing scalp skin barrier and its application, but the present invention is not limited to the above examples, i.e. it does not mean that the present invention must be implemented by the above examples. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

Claims

1. The composition for repairing the scalp skin barrier is characterized by comprising 0.1-10 parts of cocamidopropyl-PG-dimethylammonium chloride phosphate, 0.1-4 parts of phytosterol ester and 0.1-4 parts of phytosphingosine by mass part.

2. The scalp skin barrier repair composition according to claim 1, wherein the phytosterol ester comprises any one of phytosterol isostearate, phytosterol oleate, phytosterol/octyldodecanol lauroyl glutamate or a combination of at least two thereof, preferably a combination of phytosterol isostearate, phytosterol oleate and phytosterol/octyldodecanol lauroyl glutamate.

3. The composition for repairing a scalp skin barrier according to claim 1 or 2, further comprising 0.5 to 6 parts by mass of an auxiliary functional ingredient comprising any one or a combination of at least two of lauryl lactate, olive oil, hydrogenated jojoba oil, panthenol or tocopheryl acetate;

4. Use of a composition for repairing scalp skin barriers according to any one of claims 1 to 3 in the manufacture of a shampoo product comprising a shampoo, a conditioner or a hair cream.

5. The use according to claim 4, characterized in that the composition for repairing the skin barrier of the scalp is present in the shampoo product in a percentage by mass ranging from 0.5 to 15%.

6. Shampoo for repairing scalp skin barrier, characterized in that it comprises the composition for repairing scalp skin barrier according to any one of claims 1 to 3 and a basic additive.

7. The shampoo for repairing skin barrier of scalp according to claim 6 wherein the basic additive comprises any one or a combination of at least two of a surfactant, a chelating agent, a thickener, an antistatic agent, a foam stabilizer, a pearlizing agent, a pH regulator, a preservative, and a perfume.

8. The shampoo for repairing skin barrier of the scalp according to claim 7 wherein the surfactant comprises any one or a combination of at least two of sodium fatty alcohol polyoxyethylene ether sulfate, cocamidopropyl betaine, sodium cocoyl isethionate or alkyl glycoside;

preferably, the chelating agent comprises disodium EDTA;

preferably, the thickener comprises cocomethyl monoethanolamide;

preferably, the antistatic agent comprises cationic guar.

9. The method for preparing a shampoo for repairing scalp skin barrier according to claim 8, wherein the preparation method comprises:

10. The method for preparing a shampoo for repairing scalp skin barrier according to claim 9, wherein the heating of the step (1) is performed to 75-90 ℃;

preferably, the mixing and stirring in the step (2) are carried out at 75-90 ℃, and then the temperature is kept for 20-40 min;

preferably, the mixing and stirring of the step (3) are carried out at 30-50 ℃;

preferably, the pH value is adjusted to 4.0-8.0 in the step (4).