Hair care composition as well as children hair conditioner and preparation method thereof

Abstract

The invention discloses a hair care composition as well as a children hair conditioner and a preparation method thereof, and relates to the technical field of hair care daily chemical products. The hair care composition is prepared from the following components in parts by weight: 0.1 to 5 parts of stearamide propyl dimethylamine, 0.3 to 2 parts of hydrolyzed silk, 0.02 to 0.5 part of beta-glucan, 0.01 to 3 parts of citric acid and 0.01 to 3 parts of glutamic acid. The hair conditioner for children comprises the following components in parts by weight: 1.65-6.6 parts of a hair care composition, 3-8 parts of a humectant, 7-11 parts of an emulsifier, 0.1-2 parts of a thickener and 0.1-1 part of a preservative. The hair care composition and the hair conditioner for children provided by the invention can solve the problem of unstable system of hair care products for children, can nourish and soften hair, are easier to comb, are mild and do not hurt scalp, and can essentially improve the hair quality of children.

Description

Technical Field

[0001] The invention belongs to the technical field of hair care daily chemical products, and particularly relates to a hair care composition and a children's hair conditioner and a preparation method thereof. Background Art

[0002] Following silicone shampoo, silicone-free hair care products have become mainstream. However, silicone-free products often face the problem of dryness and tangling when washing hair, and conditioners are needed to improve the washing feeling. Cationic conditioners, including polyquaternium salts, quaternary ammonium salts and guar gum, are widely used in hair care products currently on the market. These conditioners can improve the dry and wet combing performance and antistatic properties of hair, but they have high eco-toxicity and are prone to excessive deposition after long-term use, thus leading to hair and scalp problems.

[0003] Children's scalp is thin and the barrier function is not complete. Considering safety, it is best to avoid using quaternary ammonium salt cationic conditioners. Stearamidopropyl dimethylamine is a non-quaternary ammonium salt ingredient. Compared with commonly used quaternary ammonium salts, it has lower ecotoxicity and similar conditioning performance. It is the key to responding to the trend of more sustainable hair care products. However, the pH value of most commercially available hair care products containing stearamidopropyl dimethylamine is generally below 4.5. A pH value greater than 4.5 will seriously affect the stability of the product.

[0004] Hair is mainly composed of keratin, which determines that the hair surface carries a negative charge. Cationic conditioners can be adsorbed on the hair surface through electrostatic action to form a monomolecular film, making the hair smooth and easy to comb, but this effect is superficial and cannot fundamentally improve hair health problems. That is, a single cationic conditioner cannot fundamentally improve hair quality.

[0005] Children's hair is generally characterized by being soft, dry, low in gloss, and poor in toughness and elasticity. The main reason is that the proportion of medullary hair is small and most of the medulla is discontinuous. It is reported that the proportion of medullary hair in 2-year-old children is as low as 23 parts, which increases to 40 parts at the age of 5. In addition, the content of cysteine ​​and disulfide in children's hair is lower than that of adults, resulting in lower hair hardness, toughness and elasticity. Therefore, in the field of children's hair care, there is an urgent need for a stable, mild, scalp-friendly, and hair conditioning composition and conditioner that can substantially improve children's hair quality. Summary of the invention

[0006] In order to overcome the problem that the child care product system containing stearamidopropyl dimethylamine in the prior art is unstable and cannot achieve the problem of substantially improving the hair quality of children, the present invention first provides an external conditioning and internal nourishing hair care composition and a preparation method thereof. The composition uses a pH regulator composed of citric acid and glutamic acid to solve the problem of the instability of the care system containing stearamidopropyl dimethylamine; at the same time, the composition also makes the hair smooth and easy to comb, and can substantially improve the hair quality. The present invention also provides a child hair conditioner containing the external conditioning and internal nourishing hair care composition and a preparation method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: An external conditioning and internal nourishing hair care composition comprises the following components:

[0008] Citric acid and glutamic acid are pH adjusters.

[0009] Glutamic acid is an acidic amino acid that can be absorbed by the scalp and has a nutritional function for hair papilla and hair matrix cells, preventing hair loss and regenerating hair. Therefore, glutamate is both a pH regulator and a hair conditioner in this hair care composition.

[0010] The composite aqueous solution of citric acid and glutamic acid is used as a pH regulator, which can not only adjust the pH of the system to 4.5-5.5 to meet the safe pH range of children's rinse-off cosmetics, but also maintain the stability of the cleaning system containing stearamidopropyl dimethylamine.

[0011] Preferably, the content of each component of the external conditioning and internal nourishing hair care composition is:

[0012] Water-soluble macromolecular β-glucan can strengthen skin resistance, prevent skin cell damage, reduce inflammatory response, and enhance skin barrier function. Children's scalp is thin and the barrier function is incomplete, and β-glucan can provide scalp protection. In addition, its long chain structure can be adsorbed on the surface of hair and scalp to form a protective film. At the same time, the large number of hydroxyl groups in the molecular structure can bind to a large number of water molecules to exert the effect of moisturizing hair. The basic structural unit of hydrolyzed silk is amino acid, which has a large number of hydroxyl, amino and carboxyl groups. It can be combined with stearamidopropyl dimethylamine and β-glucan through intermolecular forces and is not easily washed away by water, thereby synergistically enhancing the nourishing effect of silk peptides on hair.

[0013] Preferably, the preparation method of the external conditioning and internal nourishing hair care composition comprises the following steps: S1: mixing glutamic acid and citric acid in a certain ratio to prepare a glutamic acid-citric acid composite aqueous solution; S2: heating water to about 65-75° C., adding stearamidopropyl dimethylamine, stirring and dissolving; adding the prepared glutamic acid-citric acid composite aqueous solution to obtain a stearamidopropyl dimethylamine cationic conditioning agent; S3: Cool the stearamidopropyl dimethylamine cationic conditioning agent to room temperature, add the hydrolyzed silk and β-glucan aqueous solution respectively, and stir evenly to obtain the hair care composition.

[0014] The external conditioning and internal nourishing hair care composition is suitable for children's washing and care products such as shampoo and conditioner.

[0015] A children's hair conditioner containing an external conditioning and internal nourishing hair care composition also comprises 3-8 parts of a moisturizer, 7-11 parts of an emulsifier, 0.1-2 parts of a thickener and 0.1-1 parts of a preservative.

[0016] Preferably, the children's hair conditioner containing the external conditioning and internal nourishing hair care composition comprises 5-6 parts of moisturizer, 9.5-10.3 parts of emulsifier, 0.5 parts of thickener and 0.5 parts of preservative.

[0017] Preferably, the amount of the hair care composition added to the hair conditioner is 1.65-6.6 parts.

[0018] Preferably, the ratio of the moisturizer to the hair care composition is 5-6:1.65-6.6.

[0019] Preferably, the moisturizer includes at least one of glycerin, butylene glycol, propylene glycol, and panthenol; The emulsifier is selected from at least one of glyceryl stearate citrate, cetearyl alcohol, monoglyceryl stearate, and polyglyceryl-6 distearate; The thickener is selected from at least one of hydroxyethyl cellulose, hydroxypropyl methyl cellulose, carbomer and xanthan gum; The preservative includes at least one of kason, phenoxyethanol and sodium benzoate.

[0020] More preferably, the moisturizer includes glycerin and butylene glycol; Emulsifiers include glyceryl stearate citrate, cetearyl alcohol; The thickener is hydroxyethyl cellulose; Preservatives include phenoxyethanol and sodium benzoate.

[0021] A children's hair conditioner containing an external conditioning and internal nourishing hair care composition, the preparation method comprising the following steps: S1: preparing a thickener into a 1-2% aqueous solution; mixing a portion of water, a thickener solution, and a moisturizer, stirring and heating to 70-75° C.; adding an emulsifier to an oil phase, stirring and heating to 70-75° C.; mixing the water and oil phases, homogenizing and emulsifying, stirring and cooling to about 45° C., and adding a preservative; S2: adding the hair care composition and stirring evenly; S3: Finally, the pH of the system is adjusted to 4.5-5.5 using the pH regulator complex aqueous solution in the hair care composition.

[0022] Therefore, the present invention has the following beneficial effects: (1) A low-cost pH regulator is provided, which is composed of glutamic acid and citric acid, and synergistically stabilizes the pH of a washing and conditioning system containing stearamidopropyl dimethylamine conditioning agent between 4.5 and 5.5. In this pH range, the safety of children's products is met, and the stability of the system is effectively improved, while playing multiple hair care effects such as nourishing and softening, with higher safety, low cost and sustainability. (2) The composition contains β-glucan and hydrolyzed silk ingredients, which can make hair soft and easy to comb, and can also improve hair quality essentially. DETAILED DESCRIPTION

[0023] Specific embodiments of the present invention include Examples 1-7 and Comparative Examples 1-9.

[0024] Examples 1-5 and Comparative Examples 1-7 are prepared children's conditioners containing external conditioning and internal nourishing hair care compositions; Examples 6-7 and Comparative Examples 8-9 are prepared children's shampoos containing external conditioning and internal nourishing hair care compositions.

[0025] Example 1 Example 1 The first aspect provides a children's conditioner containing an external conditioning and internal nourishing hair care composition, which includes, by weight, 3 parts of glycerin, 2 parts of butylene glycol, 1 part of glyceryl stearate citrate, 7 parts of cetearyl alcohol, 3 parts of camellia seed oil, 0.3 parts of tocopherol, 0.5 parts of hydroxyethyl cellulose, 0.2 parts of phenoxyethanol, 0.3 parts of sodium benzoate, 1.95 parts of a hair care composition: 0.5 parts of citric acid, 0.4 parts of glutamic acid, 0.5 parts of stearamidopropyl dimethylamine, 0.5 parts of hydrolyzed silk, 0.05 parts of β-glucan, and 80.75 parts of water.

[0026] The second aspect of the present embodiment provides a method for preparing a children's hair conditioner containing an external conditioning and internal nourishing hair care composition, the steps comprising: S1: preparing a thickener into a 1-2% aqueous solution; mixing a portion of water, a thickener solution, and a moisturizer, stirring and heating to 70-75° C.; adding an emulsifier to an oil phase, stirring and heating to 70-75° C.; mixing the water and oil phases, homogenizing and emulsifying, stirring and cooling to about 45° C., and adding a preservative; S2: preparing a hair care composition: mixing glutamic acid and citric acid in a certain proportion, respectively, and adding water to prepare a pH regulator composite aqueous solution; adding a certain amount of stearamidopropyl dimethylamine to water heated to about 70° C., stirring to dissolve, and then adding the pH regulator composite aqueous solution, and mixing evenly; after returning to room temperature, adding hydrolyzed silk and β-glucan aqueous solution, and mixing evenly to obtain a hair care composition; S3: Add the hair care composition and stir evenly; S4: Finally, the pH of the system is adjusted to 4.5-5.5 using the pH regulator complex aqueous solution in the hair care composition.

[0027] Example 2 The specific implementation of this embodiment is the same as that of Embodiment 1, except that: 2.05 parts of hair care composition: 0.6 parts of citric acid, 0.4 parts of glutamic acid, 0.5 parts of stearamidopropyl dimethylamine, 0.5 parts of hydrolyzed silk, 0.05 parts of β-glucan; 80.65 parts of water.

[0028] Example 3 The specific implementation of this embodiment is the same as that of Embodiment 1, except that: 1.85 parts of hair care composition: 0.2 parts of citric acid, 0.6 parts of glutamic acid, 0.5 parts of stearamidopropyl dimethylamine, 0.5 parts of hydrolyzed silk, 0.05 parts of β-glucan; 81.85 parts of water.

[0029] Example 4 The specific implementation of this embodiment is the same as that of Embodiment 1, except that: 3.1 parts of hair care composition: 0.2 parts of citric acid, 0.8 parts of glutamic acid, 1 part of stearamidopropyl dimethylamine, 1 part of hydrolyzed silk, 0.1 parts of β-glucan; and 79.60 parts of water.

[0030] Example 5 The specific implementation of this embodiment is the same as that of Embodiment 1, except that: 2.81 parts of hair care composition: 0.2 parts of citric acid, 0.6 parts of glutamic acid, 1 part of stearamidopropyl dimethylamine, 1 part of hydrolyzed silk, 0.1 parts of β-glucan; 79.89 parts of water.

[0031] Comparative Example 1 A children's hair conditioner containing an external conditioning and internal nourishing hair care composition, which comprises, by weight, 3 parts of hydroglycerin, 2 parts of butylene glycol, 1 part of glyceryl stearate citrate, 7 parts of cetearyl alcohol, 3 parts of camellia seed oil, 0.3 part of tocopherol, 0.5 part of hydroxyethyl cellulose, 0.2 part of phenoxyethanol, 0.3 part of sodium benzoate, and a hair care composition comprising: 0.6 part of citric acid, 0.5 part of stearamidopropyl dimethylamine, 0.5 part of hydrolyzed silk, and 0.05 part of beta-glucan.

[0032] A method for preparing a children's hair conditioner containing an external conditioning and internal nourishing hair care composition, the steps comprising: S1: preparing a thickener into a 1-2% aqueous solution; mixing a portion of water, a thickener solution, and a moisturizer, stirring and heating to 70-75°C; adding an emulsifier to an oil phase, stirring and heating to 70-75°C; mixing the water and oil phases, homogenizing and emulsifying, stirring and cooling to about 45°C, and adding a preservative; S2: preparing a hair care composition: mixing glutamic acid and citric acid in a certain proportion, respectively, and adding water to prepare a pH regulator composite aqueous solution; adding a certain amount of stearamidopropyl dimethylamine to water heated to about 70°C, stirring and dissolving, adding citric acid to adjust the pH, and mixing evenly; after returning to room temperature, adding hydrolyzed silk and β-glucan aqueous solution, mixing evenly to obtain a hair care composition; S3: Add the hair care composition and stir evenly; S4: Finally, the pH of the system is adjusted to 4.5-5.5 with citric acid in the hair care composition.

[0033] The difference between the children's hair conditioner of this comparative example and the children's hair conditioner of Example 1 is that only 0.6 parts of citric acid is added as the pH adjuster in the hair care composition, and no glutamic acid is added.

[0034] Comparative Example 2 The specific implementation of this comparative example is the same as that of comparative example 1, except that: In the hair care composition, only 0.8 parts of glutamic acid was added as a pH adjuster, and no citric acid was added.

[0035] Comparative Example 3 The specific implementation of this comparative example is the same as that of Example 1, except that: In the hair care composition, the pH adjusters are 0.5 parts of citric acid and 0.4 parts of lactic acid.

[0036] Comparative Example 4 A children's hair conditioner containing an external conditioning and internal nourishing hair care composition, which comprises, by weight, 3 parts of glycerin, 2 parts of butylene glycol, 1 part of glyceryl stearate citrate, 7 parts of cetearyl alcohol, 3 parts of camellia seed oil, 0.5 part of tocopherol, 0.5 part of hydroxyethyl cellulose, 0.2 part of phenoxyethanol, 0.3 part of sodium benzoate, and the hair care composition: 0.5 part of lactic acid, 0.5 part of glutamic acid, 0.5 part of stearamidopropyl dimethylamine, 0.5 part of hydrolyzed silk, 0.05 part of beta-glucan, and the balance is water.

[0037] A method for preparing a children's hair conditioner containing an external conditioning and internal nourishing hair care composition, the steps comprising: S1: preparing a thickener into a 1-2% aqueous solution; mixing a portion of water, a thickener solution, and a moisturizer, stirring and heating to 70-75°C; adding an emulsifier to an oil phase, stirring and heating to 70-75°C; mixing the water and oil phases, homogenizing and emulsifying, stirring and cooling to about 45°C, and adding a preservative; S2: preparing a hair care composition: mixing lactic acid and glutamic acid in a certain proportion, respectively, adding water to prepare a pH regulator composite aqueous solution; adding a certain amount of stearamidopropyl dimethylamine to water heated to about 70°C, stirring and dissolving, adding the pH regulator composite aqueous solution, and mixing evenly; after returning to room temperature, adding hydrolyzed silk and β-glucan aqueous solution, mixing evenly to obtain a hair care composition; S3: Add the hair care composition and stir evenly; S4: Finally, the pH of the system is adjusted to 4.5-5.5 using the pH regulator complex aqueous solution in the hair care composition.

[0038] The difference between the children's hair conditioner of this comparative example and the children's hair conditioner of Example 1 is that glycerin is 2 parts, camellia seed oil is 2 parts, tocopherol is 0.5 parts, and the pH regulator in the hair care composition is 0.5 parts of lactic acid and 0.5 parts of glutamic acid.

[0039] Comparative Example 5 The specific implementation of this comparative example is the same as that of comparative example 4, except that: The pH adjuster was 0.5 parts of citric acid and 0.4 parts of aspartic acid.

[0040] Comparative Example 6 The specific implementation of this comparative example is the same as that of comparative example 4, except that: The pH adjuster is 0.5 parts of glutamic acid and 0.5 parts of aspartic acid.

[0041] Comparative Example 7 The specific implementation of this comparative example is the same as that of comparative example 4, except that: The pH adjuster is 0.5 parts of lactic acid and 0.5 parts of aspartic acid.

[0042] Table 1 Components of the hair care composition in Examples 1-5 and Comparative Examples 1-7 (by weight).

[0043] Table 2 Components of the children's hair conditioners of Examples 1-5 and Comparative Examples 1-7 (by weight).

[0044] Example 6 The first aspect of the present embodiment provides a children's shampoo containing an external conditioning and internal nourishing hair care composition, wherein the raw materials include, by weight: 24 parts of phase A: 14 parts of sodium methyl cocoyl taurate, 5 parts of lauryl hydroxysulfobetaine, and 5 parts of lauryl glucoside; phase B: 0.35 parts of carbomer; 1 part of phase C: 0.5 parts of potassium sorbate and 0.5 parts of sodium benzoate; 3.7 parts of phase D (hair care composition): 0.2 parts of citric acid, 0.3 parts of glutamic acid, 2 parts of stearamidopropyl dimethylamine, 1 part of hydrolyzed silk, 0.2 parts of β-glucan, and 70.95 parts of water.

[0045] The second aspect of this example provides a method for preparing a children's shampoo containing an external conditioning and internal nourishing hair care composition: S1: Prepare 1-2 parts of phase B into an aqueous solution; S2: Stir and heat phase A to 65-70°C, then add the phase B thickening system of S1, stir evenly, then add the phase C preservative system, stir evenly, and cool to about 45°C; S3: Prepare a hair care composition, mix the pH adjusters (glutamic acid and citric acid) in a certain proportion, add water to prepare a pH adjuster composite aqueous solution; add a certain amount of stearamidopropyl dimethylamine to water heated to about 70°C, stir to dissolve, then add the pH adjuster composite aqueous solution, and mix evenly; after returning to room temperature, add hydrolyzed silk and β-glucan aqueous solution, mix evenly to obtain a hair care composition; S4: Add the hair care composition to the system of S2 and stir evenly; S5: Finally, use the pH adjuster composite aqueous solution in the hair care composition to adjust the pH of the system to 4.5-5.5.

[0046] Example 7 The specific implementation of this embodiment is the same as that of Embodiment 6, except that: 5.7 parts of phase D hair care composition, including 0.4 parts of citric acid, 0.6 parts of glutamic acid, 4 parts of stearamidopropyl dimethylamine, 0.6 parts of hydrolyzed silk, and 0.1 parts of β-glucan; and 72.95 parts of water.

[0047] Comparative Example 8 The specific implementation of this comparative example is the same as that of Example 6, except that: No beta-glucan is added to the Phase D hair care composition.

[0048] Comparative Example 9 The specific implementation of this comparative example is the same as that of Example 6, except that: No stearamidopropyl dimethylamine is added to the Phase D hair care composition.

[0049] Table 3 Components of the hair care compositions in shampoos of Examples 6-7 and Comparative Examples 8-9 (by weight).

[0050] Table 4 Components of the shampoos of Examples 6-7 and Comparative Examples 8-9 (by weight).

[0051] 1. Performance Evaluation Stability test: Referring to the Technical Guidelines for Stability Testing and Evaluation of Cosmetics issued by China National Institute for Inspection and Quarantine, the children's conditioners and shampoos prepared in Examples 1-7 and Comparative Examples 1-9 were placed at different temperatures (-10°C, 5°C, 25°C, 40°C, 45°C) for 3 months to observe whether the system had stratification, color changes, etc., to conduct stability tests.

[0052] The judgment results refer to the following standards: if the sample system does not stratify on the 90th day and the color of the system changes to a lighter color at high temperature, it is stable and passes the stability test; otherwise, it fails.

[0053] Table 5. Stability test results.

[0054] Result analysis: The main manifestations of the failure of the comparative case stability test were system stratification at high temperature and water release at low temperature.

[0055] As shown in Table 5, stearamidopropyl dimethylamine was added to the hair care compositions of Examples 1-7 and Comparative Example 8, and citric acid and glutamic acid were used as compound pH regulators to stabilize the pH of the product system, and finally all passed the stability test; stearamidopropyl dimethylamine conditioning agent was also added to the hair care compositions of Comparative Examples 1-7, and citric acid alone or glutamic acid alone or citric acid and other pH regulators (except glutamic acid) were compounded, or glutamic acid and other pH regulators (except citric acid) were compounded, and none of them passed the stability test. It can be seen that the pH regulator compounded with citric acid and glutamic acid can not only adjust the pH of the stearamidopropyl dimethylamine conditioning agent to a weakly acidic range of 4.5-5.5, but also stabilize the product system containing stearamidopropyl dimethylamine, while other pH regulators cannot stabilize it within the range of 4.5 to 5.5.

[0056] 2. Consumer sensory testing The present invention also conducted a consumer sensory evaluation experiment on Example 1 and Example 6 without the hair care composition of the present invention and the children's hair conditioner of Example 1 and Example 6 with the hair care composition of the present invention to evaluate the application effect of the present invention in actual hair care products. The process and results of the consumer sensory evaluation experiment are shown below.

[0057] Experimental subjects: 50 child volunteers aged 3-12 were selected.

[0058] Test samples: Group A: blank control, the conditioner of Example 1 and the shampoo of Example 6 without the addition of the hair care composition; Group B: the conditioner of Example 1 and the shampoo of Example 6 Test method: 50 volunteers were randomly divided into five groups, with 10 people in each group, and the blank control of Group A and the conditioner of Example 1 and the shampoo of Example 6 added with the hair care composition of Group B were used to wash their hair once every 3 days for 10 consecutive times; and the comparison and scoring were carried out according to the evaluation criteria.

[0059] The volunteers' hair care evaluation criteria after 10 washes are as follows: ① The feeling of use of group A and group B is similar. The wet hair is smooth and easy to rinse. The dry hair is obviously smooth and the frizziness is significantly improved. The scalp does not itch and there is no irritation. ② Group A had a better experience, with wet hair being smooth and easy to rinse, dry hair being noticeably smoother, and frizziness being significantly reduced, and the scalp not itchy or irritated; ③ Group B had a better experience, with wet hair being smooth and easy to rinse, dry hair being noticeably smoother, and frizziness being significantly reduced, and the scalp not itchy or irritated; ④The effects of Group A and Group B are similar. The smoothness of wet and dry hair is not obvious, and the scalp does not itch or feel irritated. ⑤Group A or Group B experienced itchy and irritated scalp.

[0060] Table 6 Sensory test results. Evaluation results Group 1 8③ Group 2 10③ Group 3 9③ Group 4 10③ Group 5 9③

[0061] Evaluation results of consumer sensory test: More than 95% of the volunteers gave feedback that Group ③B had a better experience, with smoother hair and easier rinsing, and dry hair was noticeably smoother and less frizzy. The scalp did not itch or feel irritated.

[0062] Result analysis: The experimental results of the sensory evaluation by consumers show that the hair care composition of the present invention is added to both Example 1 and Example 6 in Group B, and more than 95% of the consumers believe that the use experience of Group B is better, indicating that the product adding the hair care composition of the present invention is mild and non-irritating, has the conditioning effect of smooth and soft hair, and is suitable for children.

[0063] 3. Combing Test The combing test is the ability of a comb to comb the hair from the root to the tip. The combing property reflects the ability of the hair to be smooth and not tangled. The resistance when combing the hair comes from the friction between the hair and the comb and between the hair strands. Hair that is easy to comb or not tangled has less resistance when combing. The resistance encountered during combing is usually measured by parameters such as the total force (or load) and the total work done. In this method, the comb moves at a constant speed from the root to the tip of the hair on the combing test instrument, and the combing work (or combing force) is calculated based on the data.

[0064] Test samples: the children's shampoo of Example 6 and the children's shampoo of Comparative Example 9.

[0065] Test method: Refer to T / GDCDC 022-2022 hair combing efficacy test method: a certain amount of healthy hair bundles are first washed with SLES reagent, and then the basic value of the total wet hair combing work and the basic value of the dry hair combing work of each hair bundle are measured; then the hair is randomly grouped according to the basic value, and three data are grouped to test the combing properties of Example 6 and Comparative Example 9 on the hair; the shampoo washing process is repeated twice, and the total combing work of the wet hair after treatment and the total combing work of the dry hair after natural drying are tested respectively; the average value of the three data is taken for each group.

[0066] The total work done in combing wet hair after treatment with the product, the smaller the value, the less work done in the combing process, and the better the combing of wet hair; the total work done in combing dry hair after treatment with the product, the smaller the value, the less work done in the combing process, and the better the combing of dry hair.

[0067] Table 7 Test results.

[0068] Result analysis: * indicates significant difference.

[0069] As shown in Table 7, the dry and wet combing properties of Example 6 are significantly different from those of Comparative Example 9. The total work done in dry combing and wet combing of Example 6 are lower than those of Comparative Example 9, and the dry and wet combing effect of Example 6 is better. The hair care composition of the present invention is added to both Example 6 and Comparative Example 9, but the difference between the two is that stearamidopropyl dimethylamine conditioning agent is added to the hair care composition of Example 6, while stearamidopropyl dimethylamine is not added to Comparative Example 9, indicating that stearamidopropyl dimethylamine in the hair care composition plays an important role in hair care as a cationic conditioning agent. Stearamidopropyl dimethylamine can be adsorbed on the surface of hair by electrostatic action to form a monomolecular film, and the lubricating surface layer of the hair surface reduces friction, thereby reducing the probability of hair damage caused by combing. At the same time, the hydrolyzed silk is combined with stearamidopropyl dimethylamine and β-glucan through intermolecular forces, which can make the hair smooth and have better combing properties.

Claims

1. A hair care composition, characterized in that Includes the following components:

2. The hair care composition according to claim 1, characterized in that The content of each component is:

3. A method for preparing a hair care composition according to any one of claims 1 to 2, characterized in that: The following steps are involved: S1: glutamic acid and citric acid are mixed in a certain proportion, and water is added to prepare a pH regulator composite aqueous solution; S2: heating water to about 65-75° C., adding stearamidopropyl dimethylamine, stirring and dissolving; adding the prepared glutamic acid-citric acid composite aqueous solution to obtain a stearamidopropyl dimethylamine cationic conditioning agent; S3: Cool the stearamidopropyl dimethylamine cationic conditioner to room temperature, add the hydrolyzed silk and β-glucan aqueous solution respectively, and stir evenly.

4. A children's hair conditioner, characterized in that: A hair care composition according to any one of claims 1 to 3, wherein the added amount of the hair care composition is 1.65 to 6.6 parts.

5. The children's hair conditioner according to claim 4, characterized in that It also includes 3-8 parts of moisturizer, 7-11 parts of emulsifier, 0.1-2 parts of thickener and 0.1-1 parts of preservative.

6. The children's hair conditioner according to claim 5, characterized in that The ratio of the moisturizer to the hair care composition is 5-6:1.65-6.6; The moisturizing agent includes at least one of glycerin, butylene glycol, propylene glycol and panthenol.

7. The children's hair conditioner according to claim 5, characterized in that The emulsifier is selected from at least one of glyceryl stearate citrate, cetearyl alcohol, monoglyceryl stearate, and polyglyceryl-6 distearate; The thickener is selected from at least one of hydroxyethyl cellulose, hydroxypropyl methyl cellulose, carbomer and xanthan gum; The preservative includes at least one of kason, phenoxyethanol and sodium benzoate.

8. A method for preparing a children's hair conditioner, characterized in that: The following steps are involved: S1: Prepare a 1-2% aqueous solution of the thickener; mix a portion of water, the thickener solution, and the moisturizer, and heat to 70-75°C with stirring; add the emulsifier to the oil phase, and heat to 70-75°C with stirring; mix the water and oil phases, homogenize and emulsify, and stir to cool to about 45°C before adding the preservative; S2: Add the hair care composition and stir evenly; S3: Adjust pH.

9. The method for preparing the children's hair conditioner according to claim 8, characterized in that: The pH adjuster adjusts the pH to 4.5-5.5.

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