Preparation method of efficient repairing and anti-dandruff shampoo

Abstract

The invention provides the preparation method of the efficient repairing and dandruff removing shampoo, the preparation process is simple, the raw materials are easy to obtain, and a novel surfactant with anionic and nonionic dual properties is obtained by modifying fatty alcohol-polyoxyethylene ether through a photoelectric means for the first time. The novel surfactant is obtained by performing reduced pressure distillation on an electrolyte product, and then the novel surfactant is compounded with an anionic surfactant and a nonionic surfactant to obtain the shampoo key component with efficient foaming capacity and wetting effect.

Description

Technical Field

[0001] The invention belongs to the category of daily cosmetics and relates to a preparation method of a high-efficiency repairing and anti-dandruff shampoo. Background Art

[0002] Shampoo has a long history of development. Before the 1930s, people used soap, washing powder and other methods to wash their hair. The emergence of conditioners in the 1980s changed people's shampooing habits. People no longer focused on hair cleanliness alone, but used conditioners in combination with hair to focus on hair smoothness. Conditioners need to be used after shampooing, and conditioners are not easy to rinse out. They need to be rinsed multiple times, wasting time and resources. Although ordinary shampoo has a strong degreasing power and effectively removes dirt, its strong degreasing power will irritate the scalp and hair while removing dirt, causing side effects such as hair damage, scalp itching and increased dandruff. Therefore, adding hair care ingredients to ordinary shampoo can not only remove dirt but also reduce such damage, maintain hair, and improve the combing properties of hair in dry and wet states.

[0003] In social production, surfactants play a very important role in various fields. There are many types of surfactants, which are known as "industrial MSG". Surfactants are amphiphilic molecules with hydrophilic groups and hydrophobic groups. Adding a small amount of surfactants to a solution can reduce the surface tension of the solution. Surfactants generally have good foaming, emulsification, wetting, and hard water resistance properties, which promotes the wider application of surfactants in oil extraction, textile processing, pesticides, cosmetics, food, medicine and other fields. Relevant research results show that surfactants have important practical significance.

[0004] The chemical structure of fatty alcohol ether carboxylate (AEC) can be expressed as: RO(CH2CH2O) n CH2COOM, where R is an open-chain alkyl group, n is an integer greater than 1, and M = Na+, K+, Li+. It is very similar to the chemical structure of soap, except that a certain number of polyoxyethylene groups are inserted between the hydrophobic group and the hydrophilic group, making it have the characteristics of anion and non-ion, and also has unique properties such as temperature stability, low toxicity, and excellent anti-decomposition ability.

[0005] The synthesis methods of fatty alcohol ether carboxylates include: carboxymethylation method. The carboxymethylation method includes two-step reaction process: alkalization reaction and carboxymethylation. First, during the alkalization reaction, the fatty alcohol polyoxyethylene ether undergoes a nucleophilic substitution reaction with chloroacetic acid or chloroacetate under alkaline conditions, namely carboxymethylation, and finally generates fatty alcohol ether carboxylates. Finally, the product is removed by an appropriate separation method to obtain the final product.

[0006] The oxidation method is to use precious metals to catalyze direct air oxidation or chromic acid, nitric acid oxidation to oxidize the terminal hydroxyethyl group into a carboxyl group. Among the oxidation methods, the more advanced methods are precious metal catalytic oxidation and nitroxide free radical catalytic oxidation.

[0007] The nitroxide free radical catalytic oxidation method is a preparation method that uses air for direct oxidation or oxidation with chromic acid, nitric acid, etc. In essence, the nitroxide free radical is oxidized into a catalytic oxonium salt using oxygen in the presence of nitric acid, that is, the terminal -CH2OH is oxidized to -COOH, and then reacts.

[0008] The noble metal catalytic oxidation method is the most commonly used method in the catalytic oxidation method. The synthesis process of the noble metal catalytic oxidation method is that the hydroxyethyl group at the end of the fatty alcohol ether is oxidized to a carboxyl group by air or oxygen under the action of a catalyst, and then neutralized with sodium hydroxide in an alkaline aqueous solution to obtain AEC.

[0009] The acrylonitrile addition method mainly uses the nitrile group to replace the active hydrogen in the alcohol ether to generate fatty alcohol ether nitrile, which is then hydrolyzed in a strong alkaline aqueous solution to generate alcohol ether carboxylates. The acrylate method introduces an ester group through the addition or esterification of fatty alcohol ethers, and then hydrolyzes the ester group to obtain fatty alcohol ether carboxylates containing carboxyl groups.

[0010] Electrochemical method: CN105568310B provides an electrochemical synthesis method of fatty alcohol polyoxyethylene ether carboxylic acid or its salt, characterized in that it comprises the following steps: the first step: dissolving fatty alcohol polyoxyethylene ether in a buffer solution, adding a catalyst, and preparing a micro-nano emulsion; the second step: inserting a pair of platinum electrodes as an anode and a cathode into the micro-nano emulsion, passing a constant current, and stirring electrolysis at room temperature; the third step: after the electrolysis is completed, extracting the reaction solution with ethyl acetate to remove the catalyst, separating the liquid, adding a hydrogen-type cation exchange resin to the aqueous solution layer for ion exchange, obtaining an aqueous phase solution of fatty alcohol ether carboxylate or fatty alcohol ether carboxylic acid, filtering to remove the resin, and concentrating to obtain fatty alcohol polyoxyethylene ether carboxylic acid or its salt. The reaction of the present invention is carried out in the aqueous phase, without using an organic solvent, using oxygen in the air as an oxidant, the catalyst is low in toxicity, and the reaction temperature is room temperature; the reaction has no by-products, and the atomic economy is 100%. Summary of the invention

[0011] The present invention provides a method for preparing an efficient repairing anti-dandruff shampoo, which has a simple preparation process and readily available raw materials. It is the first time to propose a novel surfactant having both anionic and nonionic properties obtained by modifying fatty alcohol polyoxyethylene ether by photoelectric means, wherein the novel surfactant is obtained by vacuum distilling an electrolyte product, and then the novel surfactant is compounded with anionic surfactant and nonionic surfactant to obtain a key component of a shampoo having efficient foaming ability and wetting effect. Then, by adding other auxiliary ingredients, such as an anti-dandruff agent, a fragrance, etc., the obtained shampoo has rich and delicate foam, moderate detergency, is easy to rinse, and has no irritation to hair, skin, and eyes. The washed hair is bright, soft, elastic, and has good dry and wet combing properties, and is particularly cool and refreshing, and has an antipruritic effect, achieving the effects of anti-dandruff and antipruritic, and balancing the oil secretion of the scalp.

[0012] Specifically: A method for preparing an efficient repairing and anti-dandruff shampoo, the shampoo at least includes a new surfactant with dual anionic and non-ionic properties obtained by photoelectrochemical modification, anionic surfactant and non-ionic surfactant, the new surfactant with dual anionic and non-ionic properties accounts for 15.0% to 30% of the weight of the composition; the anionic surfactant accounts for 12% to 14% of the weight of the composition; the non-ionic surfactant accounts for 7% to 9% of the weight of the composition.

[0013] Furthermore, the novel surfactant having both anionic and nonionic properties is preferably an alcohol ether carboxylate, such as fatty alcohol polyoxyethylene ether carboxylic acid or its salt.

[0014] Furthermore, the anionic surfactant is a sulfonalkyl ester of a fatty acid, such as IgeponA, or a sulfonalkyl amide of a fatty acid, such as IgeponT.

[0015] The nonionic surfactant is selected from alkanolamide nonionic surfactants, such as fatty acid diethanolamide or alkyl polyglycoside.

[0016] The invention also comprises an anti-dandruff agent, which is a pyridinethione salt and is used in an amount of 1-2 wt.%.

[0017] Specifically: an anti-dandruff, anti-itching and smoothing shampoo composition, comprising: Fatty alcohol polyoxyethylene ether carboxylic acid or sodium fatty alcohol polyoxyethylene ether carboxylate 22.5 wt.%; IgeponA 6 13wt.%; Alkyl polyglycosides 8wt.%; Ethylene glycol distearate 1 wt.%; Coconut oil monoethanolamide 1 wt.%; Pyrithione salt 1.5wt.%; Preservatives 0.01 wt. %; Fragrance 0.02 wt.%; Antioxidant 0.02 wt.%; Add deionized water to 100.00; Citric acid adjusts pH to 5.5-6.2.

[0018] The viscosity of the shampoo is 6-10Pa . S.

[0019] The fatty alcohol polyoxyethylene ether carboxylic acid or the corresponding salt is obtained by photoelectric modification, and the process is as follows: (1) Preparation of photoanode: (a) Titanium sheet pretreatment: After mechanical polishing, the titanium sheet was ultrasonically cleaned with acetone, ethanol and deionized water in sequence to obtain a smooth titanium sheet substrate; (b) Anodic oxidation to obtain nanoarrays: The surface-treated titanium sheet is used as the anode and the platinum sheet is used as the cathode, and the two are placed in an anodic oxidation electrolyte. The composition of the anodic oxidation electrolyte is as follows: 0.25 wt.% ammonium fluoride, 95 vol.% ethanol aqueous solution and 5 vol.% Deionized water, appropriate amount of sulfuric acid to adjust pH = 5.8, anodize at 50V constant voltage for 2 hours at 25°C, and rinse with deionized water after anodization; (c) Loading photoelectroactive catalyst: 1.5 g of bismuth nitrate was dissolved in a mixed solution of 30 mL of propylene glycol and 24 mL of ethanol, and the mixture was stirred for 1 h until it was uniformly mixed. The titanium sheet treated in step (b) and the mixed solution were transferred into a reactor and reacted at 180°C for 12 h, cooled naturally to room temperature, and then placed in a muffle furnace and heated to 350°C at a heating rate of 5°C / min and calcined for 1 h, and cooled naturally to room temperature. (d) Loading precious metal catalysts: The material prepared in step (c) is impregnated in a solution of chloroplatinic acid by an equal volume impregnation method and dried in an inert atmosphere. The photoanode finally obtained is 3 wt.% Pt / titanic bismuth acid / titanium oxide / titanium.

[0020] (2) Preparation of alcohol ether carboxylates by electrochemical modification: 3wt.% Pt / titanic bismuth acid / titanium oxide / titanium photoanode and platinum cathode are respectively inserted into an electrolytic cell solution, wherein the electrolyte solution is an emulsion composed of 15-20g fatty alcohol polyoxyethylene ether, 1-1.5g sodium chloride, and 500-750mL deionized water. A DC voltage is used with a voltage intensity of 20-30V, a xenon lamp is used as the light source, and the light intensity of the light is 15-30mW / cm 2 , temperature is 25-35°C, stirring speed is 150-200rpm, time is 10-12h; (3) Concentrate by vacuum distillation to obtain the modified surfactant.

[0021] The specific preparation process of shampoo is as follows: (a) adding a certain amount of deionized water and the modified surfactant obtained by vacuum distillation concentration into a reaction vessel, and stirring at 200-250 rpm for 5-7 minutes at 40-45°C; (b) continuing to add Igepon A and alkyl polyglycoside, stirring at 200-250 rpm for 10-15 min at 40-45° C. to obtain a homogenized emulsion; (c) after cooling to 30-35° C., adding ethylene glycol distearate and coconut oil monoethanolamide, and stirring at 200-250 rpm for 3-5 minutes; (d) Continue to add pyrithione salt, preservative, fragrance, antioxidant and deionized water, and use citric acid to adjust the pH, continue stirring for 10-15 minutes, cool to room temperature, and obtain the desired shampoo.

[0022] The present invention prepares the photoanode in advance, takes the titanium sheet as the substrate, and the surface of the titanium sheet after surface pretreatment is smooth and clean, and then performs anodization in ammonium fluoride and ethanol aqueous solution to obtain the nanoarray as shown in the attached Figure 1 As shown in (a), TiO2 is one of the most widely studied semiconductor materials. It has the advantages of low cost, non-toxicity, good thermal stability, and high photoelectrocatalytic activity. Then, a bismuth titanate layer is formed on the surface of the nanoarray by hydrothermal means. The overall morphology is uniform. Due to the increase in visible light absorption by bismuth titanate and the semiconductor heterojunction formed with TiO2, the oxidation effect of the photoanode is significantly improved. Then, the noble metal catalyst is loaded on the surface of titanium / titanium oxide / bismuth titanate by an equal volume impregnation method. Its morphology is shown in the attached figure. Figure 1 As shown in (b), a DC voltage is provided on the electrode surface to further improve the electrode oxidation effect. Compared with the prior art, (1) the photoanode of the present invention does not need to apply oxygen to oxidize the electrolyte. Under the action of light source and DC power, the oxidation performance of the electrode of the present invention is significantly improved, and no additional oxygen oxidation is required; (2) the catalyst does not need to be separated from the electrolyte for a second time. The surface area of ​​the substrate after surface anodization and hydrothermal treatment is large. The precious metal with reduced loading will be completely adsorbed on the surface of the nanoarray, evenly distributed, without agglomeration, and will not enter the electrolyte during the electrolysis process to cause electrolyte pollution, so no secondary separation is required.

[0023] The present invention uses fatty alcohol polyoxyethylene ether as a raw material and prepares a new surfactant through photoelectric modification. The surfactant is a mixture. The electrolysis product includes but is not limited to fatty alcohol polyoxyethylene ether non-ionic surfactant, dual-functional fatty alcohol polyoxyethylene ether carboxylic acid or corresponding salt, and sodium chloride, wherein the dual-functional fatty alcohol polyoxyethylene ether carboxylic acid or corresponding salt is the main component. In addition, it should be noted that the electrolyte of the present invention can be used as a surfactant product and directly used in the preparation of shampoo after only undergoing reduced pressure distillation.

[0024] The raw material of the present invention is fatty alcohol polyoxyethylene ether, which is one of the main varieties of polyoxyethylene nonionic surfactants, and has the advantages of strong permeability, high detergency, good compatibility, rapid dissolution, etc., but it has strong degreasing power for skin and hair, great irritation to skin, and weak foaming power; it has poor water solubility and hard water resistance, and its application as a shampoo raw material is subject to certain restrictions, so it needs to be modified. As described in the background technology part, the preparation method is relatively complicated, or separation is difficult. In comparison, the present invention does not require complicated post-treatment, the electrolytic treatment process is simple, the conversion rate is high, and the cost performance is high. Specifically, the fatty alcohol polyoxyethylene ether is oxidized into fatty alcohol polyoxyethylene ether carboxylic acid through photoelectric oxidation. As for the mechanism of improving the conversion rate of fatty alcohol polyoxyethylene ether carboxylic acid product by photoelectric oxidation, it remains to be studied.

[0025] Beneficial technical effects: (1) The present invention modifies and processes fatty alcohol polyoxyethylene ether by electrochemical and light source coupling to obtain a high-performance fatty alcohol polyoxyethylene ether carboxylic acid or salt mixture electrolyte, with a high product conversion rate, no need for additional oxygen oxidation during the reaction process, and no need for complex post-treatment of the corresponding product, which is significantly better than the prior art. (2) The above-mentioned fatty alcohol polyoxyethylene ether carboxylic acid or salt mixture electrolyte product is subjected to reduced pressure distillation, and then the new surfactant is compounded with anionic surfactants and non-ionic surfactants to obtain a key component of shampoo with high foaming ability and wetting effect. (3) The prepared shampoo has rich and delicate foam, moderate detergency, easy rinsing, and no irritation to hair, skin, and eyes. The washed hair is shiny, soft, elastic, and has good dry and wet combing properties. It feels especially cool and refreshing, and has an antipruritic effect, achieving the effects of antidandruff and antipruritic, and balancing the oil secretion of the scalp. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attached Figure 1 Topography of the photoanode of the present invention.

[0027] Attached Figure 2 Combability test graph of Examples 5-6 of the present invention. DETAILED DESCRIPTION Example 1

[0028] A method for preparing a surfactant, wherein the main component of the surfactant is fatty alcohol polyoxyethylene ether carboxylic acid or its corresponding salt, and the corresponding preparation method is as follows: (1) Preparation of photoanode: (a) Titanium sheet pretreatment: After mechanical polishing, the titanium sheet was ultrasonically cleaned with acetone, ethanol and deionized water in sequence to obtain a smooth titanium sheet substrate; (b) Anodic oxidation to obtain nanoarrays: The surface-treated titanium sheet is used as the anode and the platinum sheet is used as the cathode. The two sheets are placed in an anodic oxidation electrolyte. The composition of the anodic oxidation electrolyte is as follows: 0.25 wt.% ammonium fluoride, 95 vol.% ethanol aqueous solution, and an appropriate amount of sulfuric acid to adjust the pH to 5.8. The anodic oxidation is carried out at a constant voltage of 50 V for 2 hours at a temperature of 25°C. After the anodic oxidation, the anodic oxidation is washed with deionized water. (c) Loading photoelectroactive catalyst: 1.5 g of bismuth nitrate was dissolved in a mixed solution of 30 mL of propylene glycol and 24 mL of ethanol, and the mixture was stirred for 1 h until it was uniformly mixed. The titanium sheet treated in step (b) and the mixed solution were transferred into a reactor and reacted at 180° C. for 12 h, cooled naturally to room temperature, and then placed in a muffle furnace and heated to 350° C. at a heating rate of 5° C. / min and calcined for 1 h, and cooled naturally to room temperature; (d) Loading precious metal catalysts: The material prepared in step (c) is impregnated in a solution of chloroplatinic acid by an equal volume impregnation method and dried in an inert atmosphere. The photoanode finally obtained is 3 wt.% Pt / titanic bismuth acid / titanium oxide / titanium.

[0029] (2) Electrochemical modification to prepare alcohol ether carboxylates: 3 wt.% Pt / titanic bismuth acid / titanium oxide / titanium photoanode and platinum cathode were respectively inserted into an electrolytic cell solution, wherein the electrolyte solution was an emulsion composed of 17.5 g fatty alcohol polyoxyethylene ether, 1.25 g sodium chloride, and 625 mL deionized water. A DC voltage was used with a voltage intensity of 25 V, a xenon lamp was used as the light source, and the light intensity was 25 mW / cm 2 , temperature is 30°C, stirring speed is 200rpm, time is 11h; (3) Concentrate by vacuum distillation to obtain the modified surfactant. Example 2

[0030] A method for preparing a surfactant, wherein the main component of the surfactant is fatty alcohol polyoxyethylene ether carboxylic acid or its corresponding salt, and the corresponding preparation method is as follows: (1) Preparation of photoanode: (a) Titanium sheet pretreatment: After mechanical polishing, the titanium sheet was ultrasonically cleaned with acetone, ethanol and deionized water in sequence to obtain a smooth titanium sheet substrate; (b) Anodic oxidation to obtain nanoarrays: The surface-treated titanium sheet is used as the anode and the platinum sheet is used as the cathode. The two sheets are placed in an anodic oxidation electrolyte. The composition of the anodic oxidation electrolyte is as follows: 0.25 wt.% ammonium fluoride, 95 vol.% ethanol aqueous solution, and an appropriate amount of sulfuric acid to adjust the pH to 5.8. The anodic oxidation is carried out at a constant voltage of 50 V for 2 hours at a temperature of 25°C. After the anodic oxidation, the anodic oxidation is washed with deionized water. (c) Loading precious metal catalysts: The material prepared in step (c) is impregnated in a solution of chloroplatinic acid by an equal volume impregnation method and dried in an inert atmosphere. The photoanode finally obtained is 3 wt.% Pt / titanic bismuth acid / titanium oxide / titanium.

[0031] (2) Preparation of alcohol ether carboxylates by electrochemical modification: 3 wt.% Pt / titanic bismuth acid / titanium oxide / titanium photoanode and platinum cathode were respectively inserted into an electrolytic cell solution, wherein the electrolyte solution was an emulsion consisting of 17.5 g fatty alcohol polyoxyethylene ether, 1.25 g sodium chloride, and 625 mL deionized water, using a DC voltage, a temperature of 30 °C, a stirring speed of 200 rpm, and a time of 11 h; (3) Concentrate by vacuum distillation to obtain the modified surfactant.

[0032] Example 2 can be briefly described as removing the titanium oxide / bismuth titanate heterojunction and light source of the photoanode, and mainly relying on the anode and the catalyst platinum metal to catalyze the oxidation of fatty alcohol polyoxyethylene ether. Example 3

[0033] A surfactant composition: Surfactant product obtained from Example 1: 5.625 wt.%; IgeponA 3.25wt.%; Alkyl polyglycosides 2wt.%; The balance is deionized water. Example 4

[0034] A surfactant composition: Surfactant product obtained from Example 2: 5.625 wt.%; IgeponA 3.25wt.%; Alkyl polyglycosides 2wt.%; The balance is deionized water.

[0035] The surfactant composition prepared in Examples 3-4 was formulated into a stable solution, left for 24 hours, and its surface performance parameters were tested: The surface activity of the fatty alcohol polyoxyethylene ether carboxylic acid or sodium prepared in Example 1 was tested, and the corresponding cmc , minimum surface tension γ cmc、 Saturated adsorption capacity Γmax and minimum occupied area A min They are 117.23 mg / L, 32.78 mN / m, and 1.49 μmol / m 2 , 1.13nm 2 .

[0036] ρ corresponding to Example 2 cmc , minimum surface tension γ cmc、 Saturated adsorption capacity Γ max and minimum occupied area A min They are 298.7 mg / L, 28.46 mN / m, and 1.44 μmol / m 2 , 1.18nm 2 .

[0037] Example 3 corresponding to ρ cmc , minimum surface tension γ cmc、 Saturated adsorption capacity Γ max and minimum occupied area A min They are 22.41 mg / L, 29.15 mN / m, and 2.13 μmol / m 2 、0.76nm 2 .

[0038] Example 4 corresponding to ρ cmc , minimum surface tension γ cmc、 Saturated adsorption capacity Γ max and minimum occupied area A min They are 20.18 mg / L, 31.01 mN / m, and 1.85 μmol / m 2 、0.90nm 2 .

[0039] From the above parameters, it can be seen that the surfactant prepared in Example 1 is significantly better than that in Example 2, among which Example 3 has the largest saturated adsorption capacity and the smallest cross-sectional area occupied by the polar head group, that is, the corresponding surface activity is the strongest, and its effect is better than that of Example 4. Example 5

[0040] The corresponding shampoo was prepared using the surfactant prepared in Example 1: Fatty alcohol polyoxyethylene ether carboxylic acid or sodium fatty alcohol polyoxyethylene ether carboxylate 22.5 wt.%; IgeponA 13wt.%; Alkyl polyglycosides 8wt.%; Ethylene glycol distearate 1 wt.%; Coconut oil monoethanolamide 1 wt.%; Pyrithione salt 1.5wt.%; Preservatives 0.01 wt. %; Fragrance 0.02 wt.%; Antioxidant 0.02 wt.%; Add deionized water to 100.00; The pH was adjusted to 6.0 ± 0.2 with citric acid. Example 6

[0041] The corresponding shampoo was prepared using the surfactant prepared in Example 2: Fatty alcohol polyoxyethylene ether carboxylic acid or sodium fatty alcohol polyoxyethylene ether carboxylate 22.5 wt.%; IgeponA 13wt.%; Alkyl polyglycosides 8wt.%; Ethylene glycol distearate 1 wt.%; Coconut oil monoethanolamide 1 wt.%; Pyrithione salt 1.5wt.%; Preservatives 0.01 wt. %; Fragrance 0.02 wt.%; Antioxidant 0.02 wt.%; Add deionized water to 100.00; The pH was adjusted to 6.0 ± 0.2 with citric acid.

[0042] The shampoo of Example 5-6 is subjected to combing test, see attached Figure 2 The dynamic friction coefficient of Example 5 is about 0.122, and the dynamic friction coefficient of Example 6 is about 0.142. The test results show that the shampoo prepared in Example 5 of the present invention has better hair care and conditioning performance.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for preparing a highly effective repairing anti-dandruff shampoo, characterized in that The shampoo at least includes a novel surfactant having dual anionic and nonionic properties obtained by photoelectrochemical modification, anionic surfactant and nonionic surfactant, wherein the novel surfactant having dual anionic and nonionic properties accounts for 15.0% to 30% of the weight of the composition; the anionic surfactant accounts for 12% to 14% of the weight of the composition; and the nonionic surfactant accounts for 7% to 9% of the weight of the composition.

2. The method for preparing a highly effective repairing anti-dandruff shampoo according to claim 1, characterized in that The novel surfactant having both anionic and nonionic properties is preferably an alcohol ether carboxylate, such as fatty alcohol polyoxyethylene ether carboxylic acid or its salt.

3. The method for preparing a highly effective repairing anti-dandruff shampoo according to claim 1, characterized in that The anionic surfactant is a sulfonalkyl ester of a fatty acid, such as IgeponA, or a sulfonalkyl amide of a fatty acid, such as IgeponT.

4. The method for preparing a highly effective repairing anti-dandruff shampoo according to claim 1, characterized in that The nonionic surfactant is selected from alkanolamide nonionic surfactants, such as fatty acid diethanolamide or alkyl polyglycoside.

5. The method for preparing a highly effective repairing anti-dandruff shampoo according to claim 1, characterized in that The invention also comprises an anti-dandruff agent, which is a pyridinethione salt and is used in an amount of 1-2 wt.%.

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