Anti-dandruff shampoo and preparation method therefor

Abstract

An anti-dandruff shampoo and a preparation method therefor. The shampoo comprises the following components in parts by weight: 20-40 parts of a surfactant, 0.1-0.5 parts of piroctone olamine, 0.2-0.6 parts of a plant composition 1, 0.2-0.5 parts of a plant composition 2, 0.3-1 part of a plant composition 3, 0.5-2 parts of a conditioner, 1-2 parts of a thickening agent, 0.01-0.05 parts of a chelating agent, 0.2-1 part of a preservative, 0.2-0.4 parts of a fragrance, 0.1-0.3 parts of a pH regulator, and 50-70 parts of water. On the basis that piroctone olamine is a basic anti-dandruff ingredient, the plant compositions comprising a spiraea ulmaria extract, a verbena officinalis extract, a hamamelis virginiana bark / leaf / stem extract, a rubus idaeus fruit extract, and a portulaca oleracea extract are added as active ingredients, exert synergistic efficacy, and can significantly increase the anti-dandruff effect. Tests show that compared to before use, after the anti-dandruff shampoo is used for 28 days, the change rate of the amount of dandruff is as high as -40.59%, and the change rate of the area of dandruff is as high as -40.13%.

Description

An anti-dandruff shampoo and its preparation method Technical Field

[0001] This invention relates to the field of hair care products technology, specifically to an anti-dandruff shampoo and its preparation method. Background Technology

[0002] Dandruff is the shedding of keratinocytes from the scalp. Normally, the shedding of keratinocytes is minimal and slow, and not noticeable. However, under certain stimuli, immature keratinocytes are produced in large quantities, clump together, and shed, forming a fluttering "snowflake" phenomenon, commonly known as dandruff. The main causes of dandruff include accelerated dermal cell division due to microbial infection (such as Malassezia furfur and other fungi and bacteria); and excessive sebum secretion, causing sebum to adhere to the scalp along with the shed cells, which dry and become fine dandruff flakes.

[0003] Dandruff problems severely impact people's lives and social interactions, and existing anti-dandruff shampoos are often unsatisfactory. Repeated use can lead to drug resistance, actually exacerbating dandruff formation; some anti-dandruff shampoos are ineffective; and some contain ingredients that can cause skin allergies and other problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an anti-dandruff shampoo and its preparation method.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides an anti-dandruff shampoo comprising the following components in parts by weight: 20-40 parts surfactant, 0.1-0.5 parts piroctone olamine salt, 10.2-0.6 parts plant composition, 20.2-0.5 parts plant composition, 30.3-1 parts plant composition; 0.5-2 parts conditioning agent, 1-2 parts thickener, 0.01-0.05 parts chelating agent, 0.2-1 parts preservative, 0.2-0.4 parts fragrance, 0.1-0.3 parts pH adjuster, and 50-70 parts water.

[0007] Preferably, the plant extract 1 is a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone.

[0008] Preferably, the plant extract 2 is a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water.

[0009] Preferably, the plant extract 3 is a mixture of glycerin, water, and purslane extract.

[0010] More preferably, the weight ratio of plant extract 2 to plant extract 3 is 1:1-2.

[0011] Preferably, the surfactant includes water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, and water / sodium cocoyl methyl taurate / sodium chloride.

[0012] More preferably, the weight ratio of water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, and water / sodium cocoyl methyl taurate / sodium chloride is 10-15:10-15:4-8.

[0013] Preferably, the conditioning agent includes water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate.

[0014] More preferably, the weight ratio of water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate is 0.5-1:0.1-0.3:0.1-0.3:0.1-0.3.

[0015] Preferably, the thickener is sorbitan octanoate.

[0016] Preferably, the preservative includes phenoxyethanol and sodium benzoate.

[0017] Preferably, the pH adjuster is citric acid.

[0018] Preferably, the chelating agent is disodium EDTA.

[0019] Preferably, the fragrance is a flavoring.

[0020] Preferably, the anti-dandruff shampoo comprises the following raw materials in parts by weight: 10-15 parts water / sodium lauryl ether sulfate, 10-15 parts water / cocamidopropyl betaine / citric acid, 4-8 parts water / sodium cocoyl methyl taurate / sodium chloride, 0.1-0.5 parts piroctone ketone ethanolamine salt, 10.2-0.6 parts plant extract, 20.2-0.5 parts plant extract, and 30.3-1 parts plant extract. Water / polyquaternium-7 / sodium benzoate 0.5-1 parts, water / polyquaternium-10 0.1-0.3 parts, menthol 0.1-0.3 parts, dipotassium glycyrrhizate 0.1-0.3 parts, sorbitan caprylate 1-2 parts, phenoxyethanol 0.1-0.5 parts, sodium benzoate 0.1-0.5 parts, citric acid 0.2-0.5 parts, disodium EDTA 0.01-0.05 parts, fragrance 0.2-0.4 parts, water to make up to 100 parts.

[0021] Secondly, the present invention also provides a method for preparing an anti-dandruff shampoo, comprising the following steps:

[0022] The surfactant, pyrrolidone ethanolamine salt, plant composition 1, plant composition 2, plant composition 3, conditioning agent, thickener, pH adjuster, chelating agent, preservative and fragrance are weighed according to the weight parts, added to water and stirred evenly to obtain the anti-dandruff shampoo.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This invention, based on piroctone olamine salt as a dandruff-reducing agent, adds a plant composition containing meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, raspberry fruit extract, and purslane extract as active ingredients. This composition works synergistically to significantly enhance dandruff control. Testing showed that after 28 days of use, the amount of dandruff decreased by 40.59% (i.e., a 40.59% reduction), and the area of ​​dandruff decreased by 40.13% (i.e., a 40.13% reduction). Attached Figure Description

[0025] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 shows the dandruff-reducing effect of the shampoo prepared in Example 1 on subjects before use (D0) and after 28 days of use (D28). Detailed Implementation

[0027] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0028] The terms "preferred," "more preferably," and "more suitable" used in this invention refer to embodiments of the invention that provide certain beneficial effects under certain circumstances. However, other embodiments may also be preferred under the same or other circumstances. Furthermore, the description of one or more preferred embodiments does not imply that other embodiments are unavailable, nor is it intended to exclude other embodiments from the scope of this invention.

[0029] It should be understood that, except in any operational instance or otherwise indicated, all figures representing the amounts of ingredients used, for example, in the specification and claims, should be understood to be modified in all cases by the term "about". Therefore, unless otherwise stated, the numerical parameters set forth in the following specification and appended claims are approximations varying with the desired performance to be obtained according to the invention. It is not at all an attempt to limit the application of the doctrine of equivalents to the scope of the claims; each numerical parameter should be interpreted at least according to the number of significant figures reported and by applying ordinary rounding techniques.

[0030] Although the numerical ranges and parameters illustrating the broad scope of the invention are approximate, the values ​​listed in the specific examples are reported as precisely as possible. However, any numerical value inherently contains some error that is necessarily caused by the standard deviation found in their respective test measurements.

[0031] The following embodiments provide an anti-dandruff shampoo comprising the following components in parts by weight: 20-40 parts surfactant, 0.1-0.5 parts piroctone olamine salt, 10.2-0.6 parts plant composition, 20.2-0.5 parts plant composition, 30.3-1 parts plant composition, 0.5-2 parts conditioning agent, 1-2 parts thickener, 0.01-0.05 parts chelating agent, 0.2-1 parts preservative, 0.2-0.4 parts fragrance, 0.1-0.3 parts pH adjuster, and 50-70 parts water.

[0032] In one specific embodiment, the surfactant includes water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, and water / sodium cocoyl methyl taurate taurate / sodium chloride. In a further specific embodiment, the water / sodium lauryl ether sulfate is from the commercial product Texapon@N70 (manufactured by BASF (China) Co., Ltd.), and its components are water and sodium lauryl ether sulfate. The water / cocamidopropyl betaine / citric acid is from the commercial product... Betain F 50 (manufactured by Evonik Operations GmbH) consists of water, cocamidopropyl betaine, and citric acid. The water / sodium cocoyl methyl taurate / sodium chloride is from the commercial product NEOSCOAP CDT-30-SF (manufactured by Toho Chemical (Shanghai) Co., Ltd.), which consists of water, sodium cocoyl methyl taurate, and sodium chloride. The active ingredients of the surfactant are sodium lauryl ether sulfate, cocamidopropyl betaine, and sodium cocoyl methyl taurate.

[0033] In one specific embodiment, the plant extract 1 is a mixture of Verbena officinalis extract, Spiraea ulmaria extract, butylene glycol, Hamamelis virginiana bark / leaf / stem extract, 1,2-hexanediol, and p-hydroxyacetophenone, derived from a commercial plant-based oil-controlling pore-tightening agent (manufactured by NCKemical Biotechnology SL), whose active ingredients are: Verbena officinalis extract, Spiraea ulmaria extract, and Hamamelis virginiana bark / leaf / stem extract.

[0034] In one specific embodiment, the plant extract 2 is a mixture of raspberry (RUBUS IDAEUS) fruit extract, butylene glycol, phenoxyethanol, and water, derived from the commercial RUBUS IDAEUS FRUIT EXTRACT (manufactured by HYUNDAI BIOLAND CO.,Ltd.). Its active ingredient is raspberry (RUBUS IDAEUS) fruit extract.

[0035] In one specific embodiment, the plant extract 3 is a mixture of glycerin, water, and purslane extract, derived from commercial purslane extract (manufactured by Shanghai Jiakai Biotechnology Co., Ltd.). Its active ingredient is purslane extract.

[0036] In one specific embodiment, the conditioning agent includes water / polyquaternium-7 / sodium benzoate, polyquaternium-10, menthol, and dipotassium glycyrrhizate;

[0037] The thickener is sorbitan octanoate;

[0038] The preservatives include phenoxyethanol and sodium benzoate;

[0039] The pH adjuster is citric acid;

[0040] The chelating agent is disodium EDTA;

[0041] The fragrance is a flavoring.

[0042] In the following examples, all the conditioning agents, thickeners, preservatives, pH adjusters, chelating agents, fragrances and other raw materials used are commercially available.

[0043] In one specific embodiment, the anti-dandruff shampoo comprises the following raw materials in parts by weight: 10-15 parts water / sodium lauryl ether sulfate, 10-15 parts water / cocamidopropyl betaine / citric acid, 4-8 parts water / sodium cocoyl methyl taurate / sodium chloride, 0.1-0.5 parts piroctone ketone ethanolamine salt, 10.2-0.6 parts plant extract, 20.2-0.5 parts plant extract, and 30.3- 1 part, water / polyquaternium-7 / sodium benzoate 0.5-1 part, water / polyquaternium-10 0.1-0.3 parts, menthol 0.1-0.3 parts, dipotassium glycyrrhizate 0.1-0.3 parts, sorbitan caprylate 1-2 parts, phenoxyethanol 0.1-0.5 parts, sodium benzoate 0.1-0.5 parts, citric acid 0.2-0.5 parts, disodium EDTA 0.01-0.05 parts, fragrance 0.2-0.4 parts, water to make up to 100 parts.

[0044] The preparation of the anti-dandruff shampoo described below can be carried out using conventional methods, and this invention does not impose any particular limitations.

[0045] Example 1

[0046] This embodiment provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts are 100) are shown in Table 1.

[0047] The specific preparation steps for the anti-dandruff shampoo are as follows:

[0048] 1) Add phase A (water / sodium lauryl ether sulfate, appropriate amount of water) to the main pot, heat and stir until completely dissolved;

[0049] 2) Add phase B (water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride, disodium EDTA, sorbitan caprylate) to the main pot and stir until dissolved.

[0050] 3) Pre-disperse phase C (water / polyquaternium-10, appropriate amount of water), homogenize it, add it to the main pot, and stir to mix evenly;

[0051] 4) After pre-dispersing phase D (pyrrolidone ethanolamine salt, appropriate amount of water) evenly, add it to the main pot and stir to mix evenly;

[0052] 5) Cool down to 45-50℃, then add phase E (menthol), dissolved phase F (dipotassium glycyrrhizate, appropriate amount of water), dissolved phase G (sodium benzoate, appropriate amount of water), and phase H (plant extract 1, plant extract 2, plant extract 3, water / polyquaternium-7 / sodium benzoate, phenoxyethanol, fragrance, citric acid) to the main pot in sequence. Stir well, filter, and discharge to obtain the anti-dandruff shampoo.

[0053] Example 2

[0054] This embodiment provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts are 100) are shown in Table 1.

[0055] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 1.

[0056] Example 3

[0057] This embodiment provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts are 100) are shown in Table 1.

[0058] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 1.

[0059] Example 4

[0060] This embodiment provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts are 100) are shown in Table 1.

[0061] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 1.

[0062] Example 5

[0063] This embodiment provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts are 100) are shown in Table 1.

[0064] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 1.

[0065] Table 1

[0066] Comparative Example 1

[0067] This comparative example provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts of 100) are shown in Table 2. Compared with Example 1, the only difference is that the weight parts of plant composition 1 are 0 parts and the weight parts of plant composition 3 are 0.8 parts.

[0068] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 1.

[0069] Comparative Example 2

[0070] This comparative example provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts of 100) are shown in Table 2. Compared with Example 1, the only difference is that the weight parts of plant composition 2 are 0 parts and the weight parts of plant composition 3 are 1 part.

[0071] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 1.

[0072] Comparative Example 3

[0073] This comparative example provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts of 100) are shown in Table 2. Compared with Example 1, the only difference is that the weight parts of plant composition 1 are 0.8 parts and the weight parts of plant composition 3 are 0 parts.

[0074] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 1.

[0075] Comparative Example 4

[0076] This comparative example provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts are 100) are shown in Table 2. The only difference from Example 2 is that the weight part of plant composition 1 is 1 part.

[0077] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 2.

[0078] Comparative Example 5

[0079] This comparative example provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts are 100) are shown in Table 2. Compared with Example 2, the only difference is that the weight parts of plant composition 2 are 0.6 parts.

[0080] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 2.

[0081] Comparative Example 6

[0082] This comparative example provides an anti-dandruff shampoo comprising the following components: surfactant (water / sodium lauryl ether sulfate, water / cocamidopropyl betaine / citric acid, water / sodium cocoyl methyl taurate / sodium chloride), piroctone ketone ethanolamine salt, plant composition 1 (a mixture of meadowsweet extract, verbena extract, witch hazel bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone), plant composition 2 (a mixture of raspberry fruit extract, butylene glycol, phenoxyethanol, and water), plant composition 3 (a mixture of glycerin, water, and purslane extract), conditioning agent (water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizate), thickener (sorbitan caprylate), chelating agent (disodium EDTA), preservative (phenoxyethanol, sodium benzoate), fragrance (perfume), pH adjuster (citric acid), and water. The composition and weight ratio of each raw material (total weight parts are 100) are shown in Table 2. Compared with Example 3, the only difference is that the weight parts of plant composition 3 are 1.2 parts.

[0083] The specific preparation steps of the anti-dandruff shampoo are the same as in Example 3.

[0084] Table 2

[0085] Efficacy verification:

[0086] The anti-dandruff shampoos prepared in Examples 1-5 and Comparative Examples 1-6 were used as test samples to test their anti-dandruff effects.

[0087] The specific testing method is as follows:

[0088] 1) The trial subjects were healthy men aged 18-60 years who had dandruff problems (clinical scores of ≥3 points in any 4 test areas of the scalp (3 points or above before and after the dandruff period)).

[0089] 2) After the test subjects were grouped, during the shampooing period (within 2 weeks before the use of the test samples), the shampooing product (the shampooing product formula is the same as the anti-dandruff shampoo in Example 1, except that it does not contain piroctone ethanolamine salt, plant composition 1, plant composition 2, and plant composition 3, and is made up with water to make up the corresponding weight parts) was used instead of the daily shampoo. After the shampooing period and before the use of each test sample (day 0 of sample use, D0), each test subject used a DandruffMeter DA20 scalp tester to collect images and obtain the dandruff count and dandruff area before use.

[0090] 3) Each test subject used the test sample to wash their hair according to the group. After using the test sample for 28 days (D28), the DandruffMeter DA20 scalp tester was used again to collect images and obtain the dandruff count and dandruff area after 28 days of use.

[0091] During the shampooing period and the sample testing period, the specific steps for washing hair are as follows: After wetting the hair, take an appropriate amount of the shampooing product or test sample and massage until the foam covers the entire head, then rinse thoroughly with water. The washing frequency is: once a day or at least once every two days.

[0092] The anti-dandruff shampoos prepared in Examples 1-5 and Comparative Examples 1-6 were used as test samples. Based on the dandruff count and dandruff area test results (average) of each group of subjects, the change rates were calculated as shown in Table 3. The change rates were calculated using the following formula:

[0093] Change rate (%) = (Test value after 28 days of use - Test value before use) / Test value before use * 100%

[0094] Table 3

[0095] As shown in Table 3, the anti-dandruff shampoos prepared in Examples 1-5 have a very good effect in inhibiting dandruff formation. Compared with before use, the dandruff count decreased by more than 32.94% and the dandruff area decreased by more than 33.32% after 28 days of use. Furthermore, compared with the shampoos prepared in Examples 1 and 5, and compared with the shampoos prepared in Examples 4 and 3, the use of a specific weight ratio of plant extract 2 to plant extract 3 of 1:1-2 can further inhibit dandruff formation. The anti-dandruff effect of the subjects using the shampoo prepared in Example 1 before use (D0) and after 28 days of use (D28) is shown in Figure 1. As can be seen from Figure 1, the dandruff on D28 was significantly reduced compared with D0.

[0096] Comparing the results of Example 1 with those of Comparative Examples 1-3, it can be seen that the absence of any one of plant composition 1, plant composition 2, or plant composition 3 resulted in a significantly lower rate of decrease in dandruff count and dandruff area compared to Example 1. That is, Example 1 significantly reduced dandruff count and dandruff area through the combined effect of plant composition 1, plant composition 2, and plant composition 3.

[0097] Comparing the results of Example 2 with Comparative Examples 4-5, and Example 3 with Comparative Example 6, it is evident that increasing the weight percentage of any one of plant composition 1, plant composition 2, or plant composition 3 alone resulted in a significantly lower rate of decrease in dandruff count and dandruff area in Comparative Examples 4-6 compared to Examples 2 and 3. That is, Example 1, by employing a specific content range of plant composition 1, plant composition 2, and plant composition 3, can significantly reduce dandruff count and dandruff area.

[0098] This invention has many specific applications, and the above description is only a preferred embodiment. It should be noted that the above embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this invention. For those skilled in the art, several improvements can be made without departing from the principle of this invention, and these improvements should also be considered within the scope of protection of this invention.

Claims

1. An anti-dandruff shampoo, characterized by comprising: The shampoo comprises the following components by weight: surfactant 20-40 parts, piroctone olamine 0.1-0.5 parts, plant composition 10.2-0.6 parts, plant composition 20.2-0.5 parts, plant composition 30.3-1 part, conditioning agent 0.5-2 parts, thickening agent 1-2 parts, chelating agent 0.01-0.05 parts, preservative 0.2-1 part, fragrance 0.2-0.4 parts, pH regulator 0.1-0.3 parts, and water 50-70 parts.

2. The antidandruff shampoo according to claim 1, characterized by, The plant extract 1 is a mixture of Spiraea prunifolia extract, Verbena officinalis extract, Hamamelis virginiana bark / leaf / stem extract, butylene glycol, 1,2-hexanediol, and p-hydroxyacetophenone; The plant extract 2 is a mixture of Rubus chingii fruit extract, butylene glycol, phenoxyethanol, and water; The plant extract 3 is a mixture of glycerin, water, and Portulaca oleracea extract.

3. The antidandruff shampoo according to claim 2, characterized by, The weight ratio of the plant extract 2 to the plant extract 3 is 1:1-2.

4. The antidandruff shampoo according to claim 1, characterized by, The surfactant comprises water / sodium laureth sulfate, water / cocamidopropyl betaine / citric acid, and water / cocamidomethyl hydroxyethyltaurate / sodium chloride.

5. The antidandruff shampoo according to claim 4, characterized by, The weight ratio of the water / sodium laureth sulfate, water / cocamidopropyl betaine / citric acid, and water / cocamidomethyl hydroxyethyltaurate / sodium chloride is 10-15:10-15:4-8.

6. The antidandruff shampoo according to claim 1, characterized by, The conditioning agent comprises water / polyquaternium-7 / sodium benzoate, polyquaternium-10, menthol, and dipotassium glycyrrhizinate.

7. The antidandruff shampoo according to claim 6, characterized by, The weight ratio of the water / polyquaternium-7 / sodium benzoate, water / polyquaternium-10, menthol, and dipotassium glycyrrhizinate is 0.5-1:0.1-0.3:0.1-0.3:0.1-0.

3.

8. The antidandruff shampoo according to claim 1, characterized by, The thickening agent is sorbitan caprylate; The preservative comprises phenoxyethanol and sodium benzoate; The pH regulator is citric acid; The chelating agent is disodium EDTA; The fragrance is fragrance.

9. The anti-dandruff shampoo according to claim 1, wherein The anti-dandruff shampoo comprises the following components by weight: water / sodium laureth sulfate 10-15 parts, water / cocamidopropyl betaine / citric acid 10-15 parts, water / cocamidomethyl hydroxyethyltaurate / sodium chloride 4-8 parts, piroctone olamine 0.1-0.5 parts, plant extract 10.2-0.6 parts, plant extract 20.2-0.5 parts, plant extract 30.3-1 part, water / polyquaternium-7 / sodium benzoate 0.5-1 part, water / polyquaternium-10 0.1-0.3 part, menthol 0.1-0.3 part, dipotassium glycyrrhizinate 0.1-0.3 part, sorbitan caprylate 1-2 parts, phenoxyethanol 0.1-0.5 part, sodium benzoate 0.1-0.5 part, citric acid 0.2-0.5 part, disodium EDTA 0.01-0.05 part, fragrance 0.2-0.4 part, and water to 100 parts.

10. A method of preparing the antidandruff shampoo according to any one of claims 1 to 9, characterized by, The method comprises the following steps: The surfactant, piroctone olamine, plant composition 1, plant composition 2, plant composition 3, conditioning agent, thickening agent, pH regulator, chelating agent, preservative, and fragrance are weighed and then added to water, and stirred to obtain the anti-dandruff shampoo.

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