An anti-dandruff shampoo composition and its preparation method

Abstract

This invention provides an anti-dandruff shampoo composition and its preparation method, belonging to the field of daily cosmetics. The anti-dandruff shampoo composition comprises the following raw materials in weight percentages: 5-35% surfactant, 0.1-8% plant saponins, 0.1-10% polysaccharides, 1-10% compound fermentation liquid, 0.5-15% conditioning agent, and the remainder being water. The compound fermentation liquid comprises Platycladus orientalis leaves, Sophora flavescens, Cnidium monnieri, Dictamnus dasycarpus root bark, and Rehmannia glutinosa. The anti-dandruff shampoo composition of this invention effectively solves dandruff problems and also has advantages such as being mild and safe, having good stability, providing a good user experience, and being environmentally friendly and sustainable, thus providing consumers with a high-quality anti-dandruff shampoo solution.

Description

Technical Field

[0001] This invention belongs to the field of daily cosmetics, and specifically relates to an anti-dandruff shampoo composition and its preparation method. Background Technology

[0002] With rising living standards and increasing demand for personal care products, anti-dandruff shampoo has become an indispensable product in the market. The main function of anti-dandruff shampoo is to cleanse the scalp, remove dandruff, and maintain scalp health. Early anti-dandruff shampoos relied primarily on single chemical ingredients to achieve their dandruff-removing effect. While these chemicals could quickly and effectively remove dandruff, they often came with a series of side effects, such as scalp dryness, irritation, and allergies. As consumers increasingly seek healthier and more natural products, more and more anti-dandruff shampoos with natural ingredients have appeared on the market. These products typically combine plant extracts, natural oils, and other natural ingredients to provide a gentler and safer dandruff solution.

[0003] While natural anti-dandruff shampoos have mitigated some of the side effects associated with chemical ingredients, they still face numerous challenges in formulation design and manufacturing processes. First, the extraction and purification of natural ingredients are relatively complex, requiring precise process control and high-quality raw material sources. Second, natural ingredients tend to have poor stability and solubility, easily forming sediment or flocculent substances in shampoos, affecting the product's appearance and effectiveness. Furthermore, the antibacterial and antifungal effects of natural ingredients are generally weaker than those of chemical ingredients; therefore, scientific formulation design and appropriate proportions are necessary to enhance their anti-dandruff efficacy.

[0004] In recent years, with the development of biotechnology and fermentation technology, more and more research has focused on using fermentation technology to improve the activity and stability of natural ingredients. Fermentation technology can not only enhance the antibacterial and antifungal effects of plant extracts, but also improve their solubility and stability in shampoos. By selecting suitable fermentation strains and optimizing fermentation conditions, it is possible to prepare anti-dandruff shampoos with higher bioactivity and better stability. The application of this technology not only improves the dandruff-removing effect of the product, but also enhances its gentleness and safety, meeting consumers' demand for high-quality personal care products.

[0005] However, despite significant progress in the application of fermentation technology in natural anti-dandruff shampoos, several challenges remain in practical application. First, the control and management of microorganisms during fermentation is crucial, requiring assurance that no harmful substances are produced while maintaining the purity and stability of the fermentation products. Second, the selection of the fermentation substrate and the amount of fermentation products added also need careful consideration to ensure they enhance dandruff control while maintaining even distribution and stability within the shampoo.

[0006] Therefore, there is an urgent need for a natural anti-dandruff shampoo with higher bioactivity and better stability, which can not only effectively remove dandruff but also protect scalp health and meet consumers' demand for high-quality personal care products. Summary of the Invention

[0007] The purpose of this invention is to provide an anti-dandruff shampoo composition and its preparation method, which can effectively solve the problem of dandruff and has the advantages of being mild and safe, having good stability, providing a good user experience, and being environmentally friendly and sustainable, thus providing consumers with a high-quality anti-dandruff shampoo solution.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] This invention provides an anti-dandruff shampoo composition comprising the following raw materials in weight percentages: 5-35% surfactant, 0.1-8% plant saponins, 0.1-10% polysaccharide, 1-10% compound fermentation liquid, 0.5-15% conditioning agent, and the remainder being water. The raw materials of the compound fermentation liquid include arborvitae leaves, sophora flavescens, cnidium monnieri, dictamnus dasycarpus, and rehmannia glutinosa.

[0010] Furthermore, the anti-dandruff shampoo composition comprises the following raw materials in weight percentages: 10-30% surfactant, 0.5-2% plant saponins, 0.5-2% polysaccharides, 3-6% compound fermentation liquid, 5-10% conditioning agent, and the remainder being water.

[0011] Furthermore, the surfactant is a mixture of anionic surfactant, nonionic surfactant, and amphoteric surfactant, with a mass ratio of 3–5:1–2:0.5–1.5;

[0012] Furthermore, the anionic surfactant is lauryl ether sulfate or lauryl sulfate, the nonionic surfactant is cocamide MEA or cocamide DEA, and the amphoteric surfactant is cocamidopropyl betaine or disodium cocoamphodiacetate.

[0013] This invention utilizes a mixture of anionic, nonionic, and amphoteric surfactants. Anionic surfactants possess strong detergency, effectively removing oil and dirt from the scalp and hair, and producing rich foam, enhancing the user experience. Nonionic surfactants offer good wetting and dispersibility, contributing to improved cleaning efficiency. Amphoteric surfactants maintain activity under varying pH conditions, further enhancing cleaning effectiveness. Both nonionic and amphoteric surfactants also improve foam stability and persistence, resulting in finer and richer foam. While anionic surfactants offer strong cleaning power, they may irritate the skin and scalp when used alone. Nonionic and amphoteric surfactants are gentler, mitigating the irritation of anionic surfactants and making the overall formulation milder. Anionic surfactants have good solubility, helping other ingredients dissolve better in water, improving the uniformity and stability of the formulation. Nonionic and amphoteric surfactants have good dispersibility, ensuring uniform dispersion of other ingredients (such as plant saponins and polysaccharides), improving the overall performance of the product. Using surfactants in combination can further improve the overall stability of shampoo and prevent stratification, sedimentation or discoloration under different temperatures and storage conditions.

[0014] Furthermore, the plant saponins are camellia seed saponins, soapberry seed saponins, and soapberry saponins in a mass ratio of 1:0.4-0.6:0.1-0.5.

[0015] This invention incorporates plant saponins into an anti-dandruff composition. Plant saponins possess strong antibacterial and anti-inflammatory properties, as well as excellent cleansing and moisturizing effects. This invention preferably uses a combination of camellia seed saponins, soapberry seed saponins, and sapote saponins. The combination of these three further enhances the multiple effects of antibacterial, antifungal, cleansing, moisturizing, soothing, and repairing. Specifically, camellia seed saponins and sapote saponins have strong antibacterial and antifungal activity, effectively inhibiting Malassezia on the scalp and reducing dandruff production. While soapberry seed saponins have relatively weaker antibacterial activity, they provide good moisturizing effects and enhance the scalp's resistance. When camellia seed saponins and sapote saponins are used in combination with soapberry seed saponins, irritation is significantly reduced, making the entire formula gentler. Sapote saponins have strong cleansing power, effectively removing oil and dirt from the scalp, while camellia seed saponins and soapberry seed saponins provide a gentle cleansing effect, avoiding scalp dryness and irritation caused by over-cleansing.

[0016] Furthermore, the polysaccharide is fructotetrasaccharide and maltotetrasaccharide in a mass ratio of 1:3 to 5.

[0017] This invention incorporates polysaccharides into an anti-dandruff composition, enhancing its moisturizing and antioxidant properties. This provides essential moisture to the scalp and hair, maintaining scalp hydration. The combined use of fructotetrasaccharide and maltotetrasaccharide is particularly effective. Fructotetrasaccharide possesses strong antioxidant capabilities, scavenging free radicals and protecting the scalp from oxidative damage. Maltotetrasaccharide also exhibits antioxidant properties, contributing to scalp health. Maltotetrasaccharide promotes scalp cell metabolism and repair, enhancing scalp resistance and reducing dandruff production. Fructotetrasaccharide provides essential nutrients, supporting normal scalp cell function. Both fructotetrasaccharide and maltotetrasaccharide are natural polysaccharides with good skin compatibility, causing no irritation or allergic reactions. They act gently on the scalp, providing a comfortable user experience.

[0018] Furthermore, the preparation method of the composite fermentation broth includes the following steps:

[0019] (i) Clean the arborvitae leaves, sophora flavescens, cnidium monnieri, dictamnus dasycarpus root bark and rehmannia glutinosa, cut them into small pieces or crush them, mix them together to obtain mixed plant materials;

[0020] (ii) Add distilled water to the mixed plant materials, with a mass ratio of mixed plant materials to distilled water of 1:2 to 3. Then add 1 to 2% of glucose by mass of the mixed plant materials and adjust the pH value to 6.0 to 7.0 to obtain a mixture.

[0021] (iii) Add a compound fermentation strain to the mixture, which includes lactobacillus, yeast, and Bacillus subtilis, with the amount of lactobacillus added being 10. 9 -10 10 CFU / g mixed plant materials, with yeast added at a rate of 10. 8 -10 9 The amount of CFU / g mixed plant raw materials, with Bacillus subtilis added at 10g. 6 -10 7 CFU / g mixed plant materials;

[0022] (iv) Place the inoculated mixture into a fermentation tank, set the temperature to 30℃~35°C, and ferment for 7~10 days. Stir once a day during the fermentation period to ensure uniform fermentation.

[0023] (v) After fermentation, the fermented material is filtered to remove solid residues, and a clear fermentation broth is obtained. The fermentation broth is then sterilized to obtain a compound fermentation broth.

[0024] Further, in step (i), the mass ratio of Platycladus orientalis leaves, Sophora flavescens, Cnidium monnieri, Dictamnus dasycarpus root bark, and Rehmannia glutinosa is 2-3:1-2:1-2:0.5-1:1-2;

[0025] Furthermore, in step (ii), citric acid or sodium hydroxide is used to adjust the pH value.

[0026] The active ingredients in the compound fermentation liquid prepared by this invention can effectively inhibit Malassezia on the scalp, reducing dandruff production. The metabolites produced during fermentation provide essential nutrients and bioactive substances, promoting scalp cell metabolism and repair, and enhancing scalp resistance. The application of natural plant ingredients and fermentation technology makes the compound fermentation liquid highly mild and safe, reducing scalp irritation and the risk of allergies. The plant materials used in this invention include Platycladus orientalis leaves, Sophora flavescens, Cnidium monnieri, Dictamnus dasycarpus root bark, and Rehmannia glutinosa, achieving a balance in antibacterial and anti-inflammatory effects, avoiding side effects caused by excessive use of a single ingredient. Platycladus orientalis leaves contain various volatile oils and flavonoids, exhibiting strong antibacterial and antifungal activity, effectively inhibiting Malassezia on the scalp. Sophora flavescens contains alkaloids such as matrine, possessing strong antibacterial and anti-inflammatory effects, reducing the risk of scalp inflammation and infection. Cnidium monnieri promotes scalp blood circulation and improves scalp health. Dictamnus dasycarpus root bark has antipruritic and soothing effects, relieving scalp itching and discomfort. Rehmannia glutinosa has heat-clearing and detoxifying effects, improving the scalp microenvironment and promoting scalp health. The active ingredients in different plant materials work synergistically to enhance antibacterial, antifungal, anti-inflammatory, and antipruritic effects, providing more comprehensive scalp care. During fermentation, a compound fermentation strain of Lactobacillus, yeast, and Bacillus subtilis is used. This mixed fermentation of multiple strains produces a wider variety of metabolites, improving the biological activity and functional diversity of the fermentation liquid. The mixed fermentation of different strains also improves the stability of the fermentation liquid, preventing stratification, precipitation, or discoloration under different temperatures and storage conditions.

[0027] Further, the conditioning agent is one or more of fatty alcohols, quaternary ammonium salts, polyquaternary ammonium salts, cationic polymers, siloxane compounds, ethylene glycol distearate, and glycerides;

[0028] Preferably, the fatty alcohol is one or both of cetyl alcohol and stearyl alcohol;

[0029] Preferably, the quaternary ammonium salt is one or both of hexadecyltrimethylammonium chloride and octadecyltrimethylammonium chloride;

[0030] Preferably, the polyquaternium salt is one or both of polyquaternium salt-7 and polyquaternium salt-10;

[0031] Preferably, the cationic polymer is guar hydroxypropyltrimethylammonium chloride;

[0032] Preferably, the siloxane compound is one or both of dimethylsiloxane and cyclomethylsiloxane;

[0033] Preferably, the glycerides are one or both of glyceryl stearate and glyceryl monostearate.

[0034] In another aspect, the present invention provides a method for preparing the anti-dandruff shampoo composition, comprising the following steps:

[0035] (1) Disperse plant saponins and polysaccharides in water and stir evenly to obtain mixture 1;

[0036] (2) Mix the surfactant and conditioner and stir until homogeneous to obtain mixture 2;

[0037] (3) Add mixture 1 to mixture 2 and homogenize it using a high-speed shear or homogenizer to ensure uniform mixing and form a stable emulsion system.

[0038] (4) Add the compound fermentation liquid to the emulsification system, continue to stir evenly, adjust the pH value to between 5.5 and 7.0, sterilize, and obtain the anti-dandruff shampoo composition.

[0039] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0040] 1. Highly effective dandruff removal: By using specific natural plant ingredients and compound fermentation liquid, the dandruff shampoo composition of the present invention can effectively inhibit Malassezia on the scalp and reduce the production of dandruff.

[0041] 2. Gentle and safe: The anti-dandruff shampoo composition of the present invention uses natural plant ingredients, avoiding problems such as scalp dryness, irritation and allergies that may be caused by traditional chemical ingredients.

[0042] 3. Good stability: Through scientific formula design and reasonable preparation process, the anti-dandruff shampoo composition of the present invention can maintain good stability during long-term storage.

[0043] 4. Environmentally friendly and sustainable: The natural plant ingredients and fermentation technology used in this invention not only reduce the use of chemical components and reduce the impact on the environment, but also promote the sustainable use of resources.

[0044] 5. Multifunctionality: The anti-dandruff shampoo composition of the present invention not only has excellent anti-dandruff effect, but also provides necessary nutrition and moisturization to the hair while cleaning the scalp, thus comprehensively improving the health of the scalp and hair. Detailed Implementation

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In addition, it is worth noting that the raw materials involved in the present invention are all commercially available products unless otherwise specified.

[0046] The following sources of raw materials are provided as examples:

[0047] Camellia seed saponins, Sapindus mukorossi seed saponins, and Gleditsia sinensis saponins were purchased from Beijing Bailingwei Technology Co., Ltd.

[0048] Fructose tetrasaccharide and maltotetrasaccharide were purchased from Shanghai Myriel Biochemical Technology Co., Ltd.

[0049] Lactobacillus was purchased from the China Industrial Microbial Culture Collection Center, number: CICC 10217.

[0050] Bacillus subtilis was purchased from the China Industrial Microbial Culture Collection Center, number: CICC 10003.

[0051] The yeast was purchased from the China Industrial Microbial Culture Collection Center, number: CICC 1301.

[0052] Malassezia was purchased from the China Industrial Microbial Culture Collection Center, catalog number: CICC 13020.

[0053] Example 1

[0054] This embodiment provides an anti-dandruff shampoo composition comprising the following raw materials by weight percentage: 25% surfactant, 1% plant saponins, 1% polysaccharide, 5% compound fermentation liquid, 8% conditioning agent, and the remainder being water.

[0055] The surfactants are sodium lauryl ether sulfate, cocamide MEA, and cocamidopropyl betaine in a mass ratio of 4:1.5:1.

[0056] The plant saponins are camellia seed saponins, soapberry seed saponins and ginseng saponins, with a mass ratio of 1:0.5:0.3;

[0057] The polysaccharides are fructotetraose and maltotetraose, with a mass ratio of 1:4;

[0058] The conditioning agents are cetyl alcohol, polyquaternium-7, guar hydroxypropyltrimethylammonium chloride, and glyceryl stearate, in a mass ratio of 1:1:1:1.

[0059] The compound fermentation broth was prepared using the following method:

[0060] (i) Wash the arborvitae leaves, sophora flavescens, cnidium monnieri, dictamnus dasycarpus root bark and rehmannia glutinosa in a mass ratio of 2:1.5:1.5:0.8:1.5, cut them into small pieces, mix them together to obtain mixed plant materials;

[0061] (ii) Add distilled water to the mixed plant materials, with a mass ratio of mixed plant materials to distilled water of 1:2.5. Then add 1% glucose by mass of the mixed plant materials and adjust the pH value to 6.5 to obtain the mixture.

[0062] (iii) Add a compound fermentation strain to the mixture, which includes lactobacillus, yeast, and Bacillus subtilis, with the amount of lactobacillus added being 10. 10 CFU / g mixed plant materials, with yeast added at a rate of 10. 9 The amount of CFU / g mixed plant raw materials, with Bacillus subtilis added at 10g. 7 CFU / g mixed plant materials;

[0063] (iv) Place the inoculated mixture into a fermentation tank, set the temperature to 33°C, and ferment for 9 days. Stir once a day during the fermentation period to ensure uniform fermentation.

[0064] (v) After fermentation, the fermented material is filtered to remove solid residues, and a clear fermentation broth is obtained. The fermentation broth is then sterilized at 121°C for 15 minutes to obtain a compound fermentation broth.

[0065] The method for preparing the anti-dandruff shampoo composition includes the following steps:

[0066] (1) Weigh out plant saponins, polysaccharides and water according to the formula, disperse the plant saponins and polysaccharides in water, stir evenly, stir for 15 minutes to obtain mixture 1;

[0067] (2) Weigh out the surfactant and conditioner according to the formula, mix them together, stir evenly for 20 minutes until the mixture becomes uniform and there is no obvious layering, to obtain mixture 2;

[0068] (3) Add mixture 1 to mixture 2 and homogenize using a homogenizer for 10 minutes to ensure uniform mixing and form a stable emulsion system.

[0069] (4) Add the compound fermentation liquid to the emulsion system, continue to stir evenly for 20 minutes, adjust the pH value to 6.5, sterilize, and obtain the anti-dandruff shampoo composition.

[0070] Example 2

[0071] This embodiment provides an anti-dandruff shampoo composition comprising the following raw materials in weight percentages: 30% surfactant, 2% plant saponins, 0.5% polysaccharide, 4% compound fermentation liquid, 10% conditioning agent, and the remainder being water.

[0072] The surfactants are ammonium lauryl sulfate, cocamide DEA and cocamidopropyl betaine, in a mass ratio of 3:2:1.

[0073] The plant saponins are camellia seed saponins, soapberry seed saponins and ginseng saponins, with a mass ratio of 1:0.4:0.4;

[0074] The polysaccharides are fructotetraose and maltotetraose, with a mass ratio of 1:3;

[0075] The rest is the same as in Example 1.

[0076] Comparative Example 1

[0077] This comparative example provides an anti-dandruff shampoo composition comprising the following raw materials in weight percentages: 40% surfactant, 1% plant saponins, 1% polysaccharide, 1% compound fermentation liquid, 8% conditioning agent, and the remainder being water;

[0078] The rest is the same as in Example 1.

[0079] Comparative Example 2

[0080] This comparative example provides an anti-dandruff shampoo composition, which differs from Example 1 in that the surfactant is sodium lauryl ether sulfate, ammonium lauryl sulfate, and cocamide MEA in a mass ratio of 1:1:1.

[0081] Comparative Example 3

[0082] This comparative example provides an anti-dandruff shampoo composition, which differs from Example 1 in that plant saponins are replaced with glucosides.

[0083] Comparative Example 4

[0084] This comparative example provides an anti-dandruff shampoo composition, which differs from Example 1 in that the amount of plant saponins added is 10%.

[0085] Comparative Example 5

[0086] This comparative example provides an anti-dandruff shampoo composition, which differs from Example 1 in that the polysaccharide is replaced with hyaluronic acid.

[0087] Comparative Example 6

[0088] This comparative example provides an anti-dandruff shampoo composition, which differs from Example 1 in that the raw materials for preparing the compound fermentation liquid are replaced with ginger, sophora flavescens, green tea, dandelion root and rehmannia, in a mass ratio of 1:1:1:1:1.

[0089] Comparative Example 7

[0090] This comparative example provides an anti-dandruff shampoo composition, which differs from Example 1 in that the compound fermentation broth preparation uses a single lactobacillus instead of a compound fermentation bacteria.

[0091] Performance Test 1 Stability Test

[0092] The anti-dandruff shampoo compositions prepared in Examples 1-2 and Comparative Examples 1-7 were prepared as test samples. Three parallel samples were prepared for each sample and stored at 4℃, 25℃ and 40℃ respectively for one month. The presence of layering, precipitation or discoloration was observed. The results are shown in Table 1.

[0093] Table 1 Stability test results

[0094]

[0095]

[0096] The above test results show that the anti-dandruff composition prepared by this invention remained clear under all test conditions, without layering, precipitation, or discoloration, proving that the formulation design of this invention is reasonable, the components are stable, and it can maintain good stability at different temperatures. Comparative Example 2 used sodium lauryl ether sulfate, ammonium lauryl sulfate, and cocamide MEA in a mass ratio of 1:1:1. This ratio leads to poor compatibility between surfactants, especially at low temperatures, easily causing turbidity and precipitation. In Comparative Example 4, the amount of plant saponins added was 10%. High concentrations of plant saponins have reduced solubility at low temperatures and can disrupt the balance of the formulation, easily causing turbidity and precipitation, affecting overall stability.

[0097] Performance Test 2: Dandruff Removal Performance Test

[0098] Test samples: anti-dandruff shampoo compositions prepared in Examples 1-2, Comparative Examples 1, 3, and 5-7.

[0099] Test Method: Malassezia strains were inoculated onto yeast extract glucose agar medium and incubated at 30°C for 48 hours. Colonies were scraped from the cultured plates and a bacterial suspension of approximately 10^6 CFU / mL was prepared with sterile water. The shampoo sample was diluted to 1.0% for later use. 10 mL of yeast extract glucose agar medium was added to each sterile petri dish, followed by 100 μL of the bacterial suspension. The mixture was spread evenly. Different shampoo samples were added to different locations on each petri dish using a pipette. Three replicates were prepared for each sample, with 20 μL added to each sample. The petri dishes were incubated at 30°C for 48 hours, and the diameter of the inhibition zone around each drop point was recorded. The results are shown in Table 2.

[0100] Table 2. Results of dandruff removal performance test

[0101]

[0102] The above results indicate that the shampoo prepared in this invention has a very significant inhibitory effect on Malassezia, demonstrating its strong dandruff-removing properties. Comparative Example 1 had a surfactant content of 40%. While high concentrations of surfactant can enhance the cleaning effect, they may disrupt the shampoo's balance and reduce the effectiveness of other ingredients. High concentrations of surfactant can also interfere with the action of plant saponins and polysaccharides, affecting their antibacterial effects. Furthermore, high concentrations of surfactant may cause pH instability in the shampoo, affecting its inhibitory effect on Malassezia. In Comparative Example 3, plant saponins were replaced with glucosides. Although glucosides have certain moisturizing and antioxidant effects, their antibacterial and antifungal effects are weak, and they cannot effectively inhibit the growth of Malassezia. In Comparative Example 5, polysaccharides were replaced with hyaluronic acid. Although hyaluronic acid has excellent moisturizing effects, its antibacterial and antifungal effects are weak, and it cannot effectively replace the role of polysaccharides. In Comparative Example 6, the raw materials for preparing the compound fermentation broth were replaced with ginger, sophora flavescens, green tea, dandelion root, and rehmannia root. These raw materials were not as effective as the arborvitae leaves, sophora flavescens, cnidium monnieri, dictamnus dasycarpus root bark, and rehmannia root in the formula of this invention. In Comparative Example 7, the compound fermentation bacteria were replaced with a single lactobacillus. The mixed fermentation of multiple strains can produce more metabolites and enhance the antibacterial effect. A single strain cannot provide a similar synergistic effect.

[0103] Performance Test 3: Moisturizing Performance Test

[0104] Test samples: anti-dandruff shampoo compositions prepared in Examples 1-2, Comparative Examples 1, 3, and 5-7.

[0105] Volunteer Recruitment: 35 healthy volunteers aged 20-40, without serious skin diseases, and ensuring they do not use any skin care products or medications that affect skin hydration.

[0106] Test Method: Volunteers were randomly divided into 7 groups of 5 people each. They then used the shampoos from Examples 1-2, Comparative Examples 1, 3, and 5-7, respectively. Volunteers used the designated shampoos continuously for 14 days, once a day, allowing their hair to air dry after each use, avoiding the use of other hair care products. Scalp moisture content was measured before and after 14 days of shampoo use using a skin moisture meter. Hair quality was measured using a mass assay method before and after 14 days of shampoo use. The change in scalp moisture content (the change in moisture content before and after use) and the rate of change in hair moisture content (the ratio of the change in moisture content before and after use to the initial moisture content) were calculated. The average value for each group was calculated. The results are shown in Table 3.

[0107] Table 3. Results of Moisturizing Performance Test

[0108]

[0109] The above results indicate that the anti-dandruff composition prepared in this invention has a significant moisturizing effect and can significantly increase the moisture content of the scalp and hair. Comparative Example 1 has a surfactant content of 40%, and high concentrations of surfactant may damage the natural barrier of the scalp and hair, leading to moisture loss. In Comparative Example 3, plant saponins were replaced with glucosides. Although glucosides have certain moisturizing and antioxidant effects, their moisturizing effect is weak and cannot effectively replace the function of plant saponins. In Comparative Example 5, polysaccharides were replaced with hyaluronic acid. Hyaluronic acid has a good moisturizing effect, but its moisturizing mechanism differs from that of polysaccharides. In Comparative Example 6, the raw materials for preparing the compound fermentation liquid were replaced with ginger, sophora flavescens, green tea, dandelion root, and rehmannia glutinosa. The moisturizing effect of these raw materials is not as effective as the original formula. In Comparative Example 7, the compound fermentation bacteria were replaced with a single lactobacillus, which is less complex and diverse than the fermentation products of multiple bacterial strains, resulting in a decrease in moisturizing effect.

[0110] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An anti-dandruff shampoo composition comprising the following raw materials in weight percentages: 5-35% surfactant, 0.1-8% plant saponins, 0.1-10% polysaccharides, 1-10% compound fermentation broth, 0.5-15% conditioning agent, and the remainder being water; wherein, The raw materials for the compound fermentation liquid include arborvitae leaves, sophora flavescens, cnidium monnieri, dictamnus dasycarpus root bark, and rehmannia glutinosa. The surfactant is a mixture of anionic surfactant, nonionic surfactant and amphoteric surfactant in a mass ratio of 3~5:1~2:0.5~1.

5. The anionic surfactant is lauryl ether sulfate or lauryl sulfate, the nonionic surfactant is cocamide MEA or cocamide DEA, and the amphoteric surfactant is cocamidopropyl betaine or disodium cocoamphodiacetate. The plant saponins are camellia seed saponins, soapberry seed saponins, and soapberry saponins in a mass ratio of 1:0.4~0.6:0.1~0.

5. The polysaccharides are fructotetraose and maltotetraose in a mass ratio of 1:3~5; The preparation method of the compound fermentation broth includes the following steps: (i) Wash the arborvitae leaves, sophora flavescens, cnidium monnieri, dictamnus dasycarpus root bark and rehmannia glutinosa separately, cut them into small pieces or crush them, mix them together to obtain mixed plant materials; (ii) Add distilled water to the mixed plant materials, with a mass ratio of mixed plant materials to distilled water of 1:2~3, then add glucose at 1~2% of the mass of the mixed plant materials, and adjust the pH value to 6.0~7.0 to obtain a mixture; (iii) Add a compound fermentation strain to the mixture, which includes lactobacillus, yeast, and Bacillus subtilis, with the amount of lactobacillus added being 10. 9 -10 10 CFU / g mixed plant materials, with yeast added at a rate of 10. 8 -10 9 The amount of CFU / g mixed plant raw materials, with Bacillus subtilis added at 10g. 6 -10 7 CFU / g mixed plant materials; (iv) Place the inoculated mixture into a fermentation tank, set the temperature to 30°C~35°C, and ferment for 7~10 days. Stir once a day during the fermentation period to ensure uniform fermentation. (v) After fermentation, the fermented material is filtered to remove solid residues, and a clear fermentation broth is obtained. The fermentation broth is then sterilized to obtain a compound fermentation broth. In step (i), the mass ratio of Platycladus orientalis leaves, Sophora flavescens, Cnidium monnieri, Dictamnus dasycarpus root bark and Rehmannia glutinosa is 2~3:1~2:1~2:0.5~1:1~2.

2. The anti-dandruff shampoo composition according to claim 1, characterized in that, It contains the following raw materials by weight percentage: surfactant 10~30%, plant saponins 0.5~2%, polysaccharides 0.5~2%, compound fermentation broth 3~6%, conditioning agent 5~10%, and the remainder is water.

3. The anti-dandruff shampoo composition according to claim 1 or 2, characterized in that, In step (ii), citric acid or sodium hydroxide is used to adjust the pH value.

4. The anti-dandruff shampoo composition according to claim 1 or 2, characterized in that, The conditioning agent is one or more of the following: fatty alcohols, quaternary ammonium salts, polyquaternary ammonium salts, cationic polymers, siloxane compounds, ethylene glycol distearate, and glycerides.

5. The anti-dandruff shampoo composition according to claim 4, characterized in that, The fatty alcohol is one or both of cetyl alcohol and stearyl alcohol; the quaternary ammonium salt is one or both of hexadecyltrimethylammonium chloride and octadecyltrimethylammonium chloride; the polyquaternary ammonium salt is one or both of polyquaternary ammonium salt-7 and polyquaternary ammonium salt-10; the cationic polymer is guar hydroxypropyltrimethylammonium chloride; the siloxane compound is one or both of dimethylsiloxane and cyclomethylsiloxane; and the glycerides are one or both of glyceryl stearate and glyceryl monostearate.

6. A method for preparing the anti-dandruff shampoo composition according to any one of claims 1-5, characterized in that, The steps include: (1) Disperse plant saponins and polysaccharides in water and stir evenly to obtain mixture 1; (2) Mix the surfactant and conditioner and stir until homogeneous to obtain mixture 2; (3) Add mixture 1 to mixture 2 and homogenize it using a high-speed shear machine or homogenizer to ensure uniform mixing and form a stable emulsion system; (4) Add the compound fermentation liquid to the emulsion system, continue to stir evenly, adjust the pH value to between 5.5 and 7.0, sterilize, and obtain the anti-dandruff shampoo composition.

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