A shampoo with hair loss prevention and hair strengthening functions and its preparation method

Abstract

The present invention provides a shampoo with hair loss prevention and hair strengthening properties. The shampoo comprises, by mass percentage, 15-25% of a modified plant extract complex, 10-20% of a surfactant, 0.5-1% of a functional composition, 1-2% of an acid-base regulator, 0.2-0.4% of a finishing agent, 0.08-0.15% of a preservative, and the remainder of solvent to 100%. By compounding and modifying multiple plant extract components, the shampoo has good bioavailability on the hair and scalp surfaces, improving hair loss symptoms, particularly against hair loss caused by decreased hair tension due to bacterial infection in the scalp area.

Description

Technical Field

[0001] The invention belongs to the technical field of shampoo, and particularly relates to a shampoo with hair loss prevention and hair strengthening functions and a preparation method thereof. Background Art

[0002] Hair can effectively reduce the damage caused by ultraviolet radiation to the scalp and has a certain protective effect. In recent years, social competition pressure has continued to increase. Affected by multiple factors such as psychological, physiological, hair dyeing, and perming, the proportion of hair loss has become increasingly higher and is gradually developing among younger people. Shampoo is the most commonly used hair cosmetic. With the promotion of consumers' health awareness and concepts, consumers' requirements for shampoo are not limited to cleansing effects, but also pay more attention to multiple functions such as hair strengthening, anti-hair loss, and anti-dandruff. Especially for the increasingly younger consumer groups, how to improve the anti-hair loss and hair strengthening effects of shampoo while ensuring the basic functions has become one of the key work directions of researchers.

[0003] According to statistics, the production of anti-hair loss shampoo in 2023 will be 1.2135 million tons, and the demand will be 1.1979 million tons. At the same time, anti-hair loss shampoo is also developing in a greener and more sustainable direction. Plant extracts come from nature and have natural, mild, antibacterial and other properties, and have broad application prospects in the cosmetics field. Plant-based anti-hair loss and hair strengthening shampoo came into being. It not only conforms to the concept of green and sustainable development, but also can improve the nourishing, anti-hair loss and hair strengthening effects of shampoo, but its durability, anti-hair loss and hair strengthening effects are still not ideal. In addition, the existing plant-based anti-hair loss and hair strengthening shampoos on the market are usually for oily, dry and mixed hair. Many consumers tend to choose the wrong shampoo due to inaccurate understanding of their own hair quality, resulting in the shampoo's efficacy not being maximized. Summary of the Invention

[0004] The present invention aims to provide a shampoo with hair loss prevention and strengthening properties, and a preparation method thereof. By compounding and modifying multiple plant extract components, the shampoo exhibits good bioavailability on the hair and scalp surfaces, improving hair loss symptoms, particularly those caused by decreased hair tension due to bacterial infection in the scalp area. Furthermore, the shampoo can also repair and prevent hair loss.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A shampoo with hair loss prevention and hair strengthening functions. The raw materials for preparing the shampoo comprise, by weight, 3-10 parts of Platycladus orientalis leaf extract and 1-8 parts of Norway spruce extract.

[0007] Preferably, the raw materials for preparing the shampoo include, by weight, 3-5 parts of Platycladus orientalis leaf extract and 2-4 parts of Norway spruce extract.

[0008] Further preferably, the raw materials for preparing the shampoo include, by weight, 4 parts of Platycladus orientalis leaf extract and 3 parts of Norway spruce extract.

[0009] As a more preferred technical solution of the present invention, the shampoo comprises, by mass percentage, 15-25% of a modified plant extract complex, 10-20% of a surfactant, 0.5-1% of a functional composition, 1-2% of an acid-base regulator, 0.2-0.4% of a finishing agent, 0.08-0.15% of a preservative, and the solvent is replenished to a balance of 100%.

[0010] Preferably, the plant extract complex comprises, by weight, 4 parts of Platycladus orientalis leaf extract, 3 parts of Norway spruce extract, 1-2 parts of ginseng leaf extract, 1-2 parts of ginger extract, 2-3 parts of rosemary extract, 1-2 parts of pomegranate fruit extract, 2-4 parts of peony flower extract, 2-4 parts of olive leaf extract, and 1-3 parts of snow lotus extract. All of these were purchased from Xi'an Anao Biotechnology Co., Ltd.

[0011] The preparation method of the modified plant extract complex comprises the following steps:

[0012] S1: Dissolve the modifier in the mixed solvent, mix thoroughly, then add the plant extract complex and stir until the modified initial solution is obtained.

[0013] S2: The modified initial solution described in S1 is placed in an electrostatic sprayer. Under the conditions of a voltage of 15-20 kV, a propulsion flow rate of 1-2 mL / h, and a receiving distance of 20-30 cm, the modified initial solution is sprayed out through the nozzle and dried to obtain a modified plant extract complex.

[0014] The modifier described in S1 is one or more of water-soluble chitosan, zein, soy protein, wheat protein, and peanut protein.

[0015] As a more preferred technical solution of the present invention, the modifier described in S1 is zein, purchased from Wuhan Shuer Biotechnology Co., Ltd., model number 9010-666.

[0016] The mixed solvent in S1 is ethanol:water with a mass ratio of 8:2.

[0017] In the modified initial solution of S1, the solubility of the modifier is 4-6 wt %, and the concentration of the plant extract complex is 1-3 wt %.

[0018] The use of plant extracts in shampoos has become a major research and development direction. However, due to the complex composition of the extracts and their poor compatibility with the hair and scalp surfaces, if they are directly added to shampoo formulations, the active ingredients in the plant extracts cannot be fully utilized, resulting in low bioavailability and suboptimal antibacterial, anti-hair loss, and hair strengthening effects. The inventors unexpectedly discovered that modifying plant extracts with zein significantly enhances the anti-hair loss and hair strengthening effects of shampoos. This is likely due to the excellent compatibility of zein with the scalp, hair, and plant extracts. On the one hand, it improves the uniformity of the various plant extract powders, allowing the modified plant extract complex to disperse well in the shampoo system, preventing stratification. On the other hand, during the shampoo's massage of the hair and scalp, the active ingredients in the plant extracts, such as flavonoids, polyphenols, and terpenoid derivatives, are more easily absorbed and utilized, providing rich nutrients for hair nourishment, effectively reducing bacterial growth on the scalp surface, and enhancing hair tension. This is particularly effective for treating hair loss caused by bacterial infection.

[0019] The surfactant includes one or more of sodium pentadecyl sulfate, sodium lauryl alcohol ether sulfate, ammonium lauryl polyoxyethylene ether sulfate, lauryl cocamidopropyl hydroxysulfobetaine, and lauryl coconut oil double-sided active ion sodium acetate.

[0020] As a more preferred technical solution of the present invention, the surfactants are sodium pentadecyl sulfate, sodium lauryl alcohol ether sulfate, and lauryl cocamidopropyl hydroxysulfobetaine in a mass ratio of 7:10:4. The sodium pentadecyl sulfate, CAS number 27415-94-7, was purchased from Shandong Hangjie New Materials Co., Ltd.; sodium lauryl alcohol ether sulfate, CAS number 68585-34-2, was purchased from Wuhan Lanabai Pharmaceutical Chemical Co., Ltd.; and lauryl cocamidopropyl hydroxysulfobetaine, CAS number 4292-10-8, was purchased from Guangzhou Zhonghai Chemical Co., Ltd.

[0021] The functional composition includes one or more of glycerol, glutamic acid, serine, proline, arginine, sorbitol, and keratin.

[0022] As a more preferred technical solution of the present invention, the functional composition comprises glycerol, proline, and keratin in a mass ratio of (2.4-3.7):(1.8-2.3):(0.2-0.8). The glycerol, CAS number 56-81-5, was purchased from Taishan Changshun Glycerol Products Co., Ltd.; the proline, CAS number 609-36-9, was purchased from Shanghai MacLean Biochemical Technology Co., Ltd.; and the keratin, CAS number 68238-35-7, was purchased from Hebei Clavier Biotechnology Co., Ltd.

[0023] The acid-base regulator is one or more of citric acid, boric acid, lactic acid, and glycolic acid.

[0024] As a preferred technical solution of the present invention, the acid-base regulator is citric acid, CAS No. 77-92-9, purchased from Hunan Dongting Citric Acid Chemical Co., Ltd.

[0025] As a preferred technical solution of the present invention, the finishing agent is cationic cellulose ether, cationic guar gum, and zinc pyrrolidonecarboxylate in a mass ratio of (2-4): (0.5-1.5): (0.2-0.6).

[0026] As a more preferred technical solution of the present invention, the finishing agent comprises cationic cellulose ether, cationic guar gum, and zinc pyrrolidone carboxylate in a mass ratio of 3:1:0.2. The cationic cellulose ether was purchased from Jiangsu Feixiang Chemical Co., Ltd.; the cationic guar gum (CAS No. 9000-30-0) was purchased from Hebei Chuangzhiyuan Biotechnology Co., Ltd.; and the zinc pyrrolidone carboxylate (CAS No. 68107-75-5) was purchased from Shenzhen Xingkaiyue Biotechnology Co., Ltd.

[0027] In order to improve the problem of hair loss and better prevent and nourish the hair, cationic cellulose ether, cationic guar gum, and zinc pyrrolidone carboxylate are compounded and used synergistically with the modified plant extract complex to achieve multiple benefits of softening, cleaning, preventing hair loss, strengthening hair, and removing dandruff. After extensive research, the inventors found that when the mass ratio of cationic cellulose ether to cationic guar gum and zinc pyrrolidone carboxylate is 3:1:0.2, it can synergize with the zein in the modified plant extract complex to enhance its adsorption capacity on the hair surface, making it easier to form a uniform and dense protective film on the scalp and hair surface. While achieving a softening effect, it can also isolate the invasion of bacteria in the environment to a certain extent. Without affecting the absorption of plant extracts, the shampoo can better achieve the functions of preventing hair loss, strengthening hair, and removing dandruff.

[0028] The preservative is one or more of phenoxyethanol and DMDM ​​hydantoin.

[0029] As a more preferred technical solution of the present invention, the preservatives are phenoxyethanol and DMDM ​​hydantoin in a mass ratio of (0.2-0.4): (2-4). The phenoxyethanol, CAS No. 204-589-7, was purchased from Shanxi Jinyang Pharmaceutical Excipients Co., Ltd.; the DMDM ​​hydantoin, CAS No. 6440-58-0, was purchased from Zhongshan Dixin Chemical Co., Ltd.

[0030] The solvent is water.

[0031] The present invention also provides a method for preparing shampoo, comprising the following steps:

[0032] Add a surfactant to water, stir continuously and heat to 70-75°C, then add a finishing agent and stir until fully dissolved, then lower the temperature to 30-40°C, add a modified plant extract complex and a preservative, stir continuously until dissolved, and finally adjust the pH to 6-6.5 with an acid-base regulator to obtain the shampoo.

[0033] The raw materials used in the present invention are all commercially available.

[0034] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0035] 1. The present invention provides a shampoo with the functions of preventing hair loss and strengthening hair. Adding a plant extract complex modified with zein to the formula can improve the dispersion uniformity of the plant extract in the shampoo system to a certain extent. Zein acts as a bridge, so that the effective ingredients in the plant extract are absorbed and utilized to the maximum extent. The prepared shampoo has the functions of moisturizing, protecting hair, preventing hair loss, strengthening hair, and inhibiting bacteria.

[0036] 2. The method for preparing the modified plant extract complex provided by the present invention can obtain a complex with uniform sphericity by strictly controlling the voltage, propulsion flow rate, and receiving distance of the electrostatic sprayer. The specific effects are as follows: (1) When the voltage is less than 15kV or the propulsion flow rate is less than 1mL / h or the receiving distance is greater than 30cm, the complex structure is mostly flaky; (2) When the voltage is greater than 20kV or the propulsion flow rate is greater than 2mL / h or the receiving distance is less than 20cm, the complex is mostly fibrous. In the above cases, the complex powder structure is irregular and the sphericity is uneven, resulting in poor stability and absorption of the shampoo, which has an adverse effect on the anti-hair loss and hair solidification effects of the shampoo.

[0037] 3. The present invention utilizes a compounded surfactant to maximize the effectiveness of the shampoo. When the surfactants are sodium pentadecyl sulfate, sodium lauryl alcohol ether sulfate, and lauryl cocamidopropyl hydroxysulfobetaine in a mass ratio of 7:10:4, they can better absorb grease and dirt from the hair and remove them with water, resulting in a shampoo with improved cleanliness and stability.

[0038] 4. The present invention adds cationic cellulose ether, cationic guar gum, and zinc pyrrolidonecarboxylate in a mass ratio of (2-4): (0.5-1.5): (0.2-0.6) to shampoo. These cellulose ethers can synergize with the zein in the modified plant extract complex, improving hair loss while also preventing and nourishing the hair.

[0039] 5. The hair loss prevention and hair strengthening shampoo provided by the present invention contains a modified plant extract complex, a surfactant, a finishing agent, a functional composition, and other ingredients. It is suitable for oily, dry, and mixed hair, and has a wider range of applications. It also has good bioavailability and excellent hair loss prevention and hair strengthening properties, especially for hair loss caused by bacterial infections in the scalp area. Furthermore, the resulting shampoo's appearance, cold resistance, and heat resistance meet the requirements of GB / T29679-2013. DETAILED DESCRIPTION

[0040] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0041] Example 1

[0042] This embodiment provides a shampoo with anti-hair loss and hair strengthening functions, which comprises, by mass percentage, 15% of a modified plant extract complex, 10% of a surfactant, 0.5% of a functional composition, 1% of an acid-base regulator, 0.2% of a finishing agent, 0.08% of a preservative, and the remainder of the solvent is supplemented to 100%.

[0043] The preparation method of the modified plant extract complex comprises the following steps:

[0044] S1: Dissolve the modifier in the mixed solvent, mix thoroughly, then add the plant extract complex and stir until the modified initial solution is obtained.

[0045] S2: The modified initial solution described in S1 is placed in an electrostatic sprayer. Under the conditions of a voltage of 15 kV, a propulsion flow rate of 1 mL / h, and a receiving distance of 20 cm, the modified initial solution is sprayed out through the nozzle and dried to obtain a modified plant extract complex.

[0046] The modifier described in S1 is zein.

[0047] The mixed solvent in S1 is ethanol:water with a mass ratio of 8:2.

[0048] The plant extract complex described in S1, by weight, comprises: 3 parts of Platycladus orientalis leaf extract, 2 parts of Norway spruce extract, 1 part of Panax ginseng leaf extract, 1 part of ginger extract, 2 parts of rosemary extract, 1 part of pomegranate fruit extract, 2 parts of peony flower extract, 2 parts of olive leaf extract, and 1 part of snow lotus extract. All of the extracts were purchased from Xi'an Anao Biotechnology Co., Ltd.

[0049] In the modified initial solution of S1, the solubility of the modifier is 4 wt % and the concentration of the plant extract complex is 1 wt %.

[0050] The surfactant is sodium pentadecyl sulfate, sodium lauryl alcohol ether sulfate, and lauryl cocamidopropyl hydroxysulfobetaine in a mass ratio of 7:10:4.

[0051] The functional composition comprises glycerol, proline and keratin in a mass ratio of 2.4:1.8:0.2.

[0052] The acid-base regulator is citric acid.

[0053] The finishing agent comprises cationic cellulose ether, cationic guar gum and zinc pyrrolidone carboxylate in a mass ratio of 2:0.5:0.2.

[0054] The preservatives are phenoxyethanol and DMDM ​​hydantoin in a mass ratio of 0.2:2.

[0055] The solvent is water.

[0056] The present invention also provides a method for preparing shampoo, comprising the following steps:

[0057] Add a surfactant to water, stir continuously and heat to 70°C, then add a finishing agent and stir until fully dissolved, then lower the temperature to 30°C, add a modified plant extract complex and a preservative, stir continuously until dissolved, and finally adjust the pH to 6 with an acid-base regulator to obtain the shampoo.

[0058] Example 2

[0059] This embodiment provides a shampoo with anti-hair loss and hair strengthening functions, which comprises, by mass percentage, 25% of a modified plant extract complex, 20% of a surfactant, 1% of a functional composition, 2% of an acid-base regulator, 0.4% of a finishing agent, 0.15% of a preservative, and the remainder of the solvent is supplemented to 100%.

[0060] The preparation method of the modified plant extract complex comprises the following steps:

[0061] S1: Dissolve the modifier in the mixed solvent, mix thoroughly, then add the plant extract complex and stir until the modified initial solution is obtained.

[0062] S2: The modified initial solution described in S1 is placed in an electrostatic sprayer. Under the conditions of a voltage of 20 kV, a propulsion flow rate of 2 mL / h, and a receiving distance of 30 cm, the modified initial solution is sprayed out through the nozzle and dried to obtain a modified plant extract complex.

[0063] The modifier described in S1 is zein.

[0064] The mixed solvent in S1 is ethanol:water with a mass ratio of 8:2.

[0065] The plant extract complex described in S1 includes, by weight: 5 parts of Platycladus orientalis leaf extract, 4 parts of Norway spruce extract, 2 parts of ginseng leaf extract, 2 parts of ginger extract, 3 parts of rosemary extract, 2 parts of pomegranate fruit extract, 4 parts of peony flower extract, 4 parts of olive leaf extract, and 3 parts of snow lotus extract.

[0066] In the modified initial solution of S1, the solubility of the modifier is 6 wt % and the concentration of the plant extract complex is 3 wt %.

[0067] The surfactant is sodium pentadecyl sulfate, sodium lauryl alcohol ether sulfate, and lauryl cocamidopropyl hydroxysulfobetaine in a mass ratio of 7:10:4.

[0068] The functional composition comprises glycerol, proline and keratin in a mass ratio of 3.7:2.3:0.8.

[0069] The acid-base regulator is citric acid.

[0070] The finishing agent comprises cationic cellulose ether, cationic guar gum and zinc pyrrolidone carboxylate in a mass ratio of 4:1.5:0.6.

[0071] The preservatives are phenoxyethanol and DMDM ​​hydantoin in a mass ratio of 0.4:4.

[0072] The solvent is water.

[0073] The present invention also provides a method for preparing shampoo, comprising the following steps:

[0074] Add a surfactant to water, stir continuously and heat to 75°C, then add a finishing agent and stir until fully dissolved. Then, after lowering the temperature to 30°C, add a modified plant extract complex and a preservative and stir continuously until dissolved. Finally, adjust the pH to 6.5 with an acid-base regulator to obtain the shampoo.

[0075] Example 3

[0076] This embodiment provides a shampoo with anti-hair loss and hair strengthening functions, which comprises, by mass percentage, 20% of a modified plant extract complex, 14% of a surfactant, 0.8% of a functional composition, 1.3% of an acid-base regulator, 0.3% of a finishing agent, 0.11% of a preservative, and the remainder of the solvent is supplemented to 100%.

[0077] The preparation method of the modified plant extract complex comprises the following steps:

[0078] S1: Dissolve the modifier in the mixed solvent, mix thoroughly, then add the plant extract complex and stir until the modified initial solution is obtained.

[0079] S2: The modified initial solution described in S1 is placed in an electrostatic sprayer. Under the conditions of a voltage of 17 kV, a propulsion flow rate of 1.5 mL / h, and a receiving distance of 26 cm, the modified initial solution is sprayed out through the nozzle and dried to obtain a modified plant extract complex.

[0080] The modifier described in S1 is zein.

[0081] The mixed solvent in S1 is ethanol:water with a mass ratio of 8:2.

[0082] The plant extract complex described in S1 includes, by weight: 4 parts of Platycladus orientalis leaf extract, 3 parts of Norway spruce extract, 2 parts of ginseng leaf extract, 1 part of ginger extract, 2 parts of rosemary extract, 1 part of pomegranate fruit extract, 1 part of peony flower extract, 3 parts of olive leaf extract, and 1 part of snow lotus extract.

[0083] In the modified initial solution of S1, the solubility of the modifier is 2 wt %, and the concentration of the plant extract complex is 2 wt %.

[0084] The surfactant is sodium pentadecyl sulfate, sodium lauryl alcohol ether sulfate, and lauryl cocamidopropyl hydroxysulfobetaine in a mass ratio of 7:10:4.

[0085] The functional composition comprises glycerol, proline and keratin in a mass ratio of 2.8:1.9:0.5.

[0086] The acid-base regulator is citric acid.

[0087] The finishing agent comprises cationic cellulose ether, cationic guar gum and zinc pyrrolidone carboxylate in a mass ratio of 3:1:0.3.

[0088] The preservatives are phenoxyethanol and DMDM ​​hydantoin in a mass ratio of 0.3:2.

[0089] The solvent is water.

[0090] The present invention also provides a method for preparing shampoo, comprising the following steps:

[0091] Add a surfactant to water, stir continuously and heat to 75°C, then add a finishing agent and stir until fully dissolved. Then, after lowering the temperature to 40°C, add a modified plant extract complex and a preservative and stir continuously until dissolved. Finally, adjust the pH to 6.5 with an acid-base regulator to obtain the shampoo.

[0092] Comparative Example 1

[0093] The difference between this comparative example and Example 3 is that the modified plant extract complex is replaced with a common plant extract complex, and the common plant extract complex comprises, by weight, 4 parts of Platycladus orientalis leaf extract, 3 parts of Norway spruce extract, 2 parts of ginseng leaf extract, 1 part of ginger extract, 2 parts of rosemary extract, 1 part of pomegranate fruit extract, 1 part of peony flower extract, 3 parts of olive leaf extract, and 1 part of snow lotus extract.

[0094] Comparative Example 2

[0095] The difference between this comparative example and Example 3 is that in the method for preparing the modified plant extract complex, the voltage in S2 is 10 kV, the propulsion flow rate is 0.8 mL / h, and the receiving distance is 33 cm.

[0096] Comparative Example 3

[0097] The difference between this comparative example and Example 3 is that in the method for preparing the modified plant extract complex, the voltage in S2 is 22 kV, the propulsion flow rate is 2.4 mL / h, and the receiving distance is 18 cm.

[0098] Comparative Example 4

[0099] The difference between this comparative example and Example 1 is that the finishing agent is cationic cellulose ether.

[0100] Comparative Example 5

[0101] The difference between this comparative example and Example 1 is that the finishing agent is cationic guar gum.

[0102] Comparative Example 6

[0103] The difference between this comparative example and Example 1 is that the finishing agent is a mixture of cationic cellulose ether, cationic guar gum, and zinc pyrrolidonecarboxylate in a ratio of 1:3:2.

[0104] Performance Testing

[0105] 1. According to GB / T29679-2013, the appearance, cold resistance and heat resistance of Examples 1-3 and Comparative Examples 1-6 were tested. The results are shown in Table 1.

[0106] Table 1 Appearance, cold resistance and heat resistance test results

[0107]

[0108] As shown in Table 1, the modification of the plant extract complex with zein has a good effect on improving the heat resistance and cold resistance stability of the shampoo system.

[0109] 2. Anti-hair loss effect test

[0110] Twenty volunteers (aged 25-60 years, healthy, 15 women and 5 men, with hair length 5-40 cm) suffering from hair loss due to bacterial infection in the scalp area were selected to participate in the experiment. Each volunteer used the shampoo provided in Example 3 of the present invention twice a week for two consecutive months, and provided feedback based on the 60-comb method weekly. The results are shown in Table 2.

[0111] 60-times combing method: Without washing your hair within 48 hours, use a comb with a tooth density of 6.0 teeth / cm2 to comb your hair 60 times from the left front to the left back and then from the right front to the right back, and count the number of hairs that fall out.

[0112] Usage: straighten your hair to avoid tangles, wet your hair at 40±2℃, take 15mL of the shampoo of Example 3 and put it on your palm, rub the bubbles and apply it to your hair, massage your scalp and hair for 3 minutes, and rinse with clean water.

[0113] Table 2 Anti-hair loss test results

[0114]

[0115] As can be seen from Table 2, the present invention has a significant effect on hair loss caused by bacterial infection by adding a modified plant extract complex and using it in combination with a surfactant, a finishing agent, etc.

[0116] 3. Moisturizing effect test

[0117] Ninety volunteers aged 20-60 were randomly divided into nine groups. Each group used the shampoos described in Examples 1-3 and Comparative Examples 1-6 for two months (using the same methods as the anti-hair loss efficacy test). Using a German CK Corneometer CM825, the average water content of the scalp stratum corneum was calculated for each group before product use and after two months of shampoo use at 25±0.5°C and 55±1.5% humidity. The results are shown in Table 3.

[0118] Among them, the change rate of scalp skin stratum corneum moisture content = (average scalp skin stratum corneum moisture content after two months of use - average scalp skin stratum corneum moisture content before use) ÷ average scalp skin stratum corneum moisture content before use × 100%

[0119] Table 3 Moisturizing effect test results

[0120]

[0121]

[0122] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A shampoo with hair loss prevention and hair strengthening functions, wherein the raw materials for preparing the shampoo include, by weight: Modified plant extract complex 15-25%, surfactant 10-20%, functional composition 0.5-1%, acid-base regulator 1-2%, finishing agent 0.2-0.4%, preservative 0.08-0.15%, and solvent to make up the balance to 100%; The preparation method of the modified plant extract complex comprises the following steps: S1: dissolving the modifier in a mixed solvent, mixing thoroughly, then adding the plant extract complex and stirring until a modified initial solution is obtained; The plant extract complex comprises, by weight, 3-5 parts of Platycladus orientalis leaf extract, 2-4 parts of Norway spruce extract, 1-2 parts of ginseng leaf extract, 1-2 parts of ginger extract, 2-3 parts of rosemary extract, 1-2 parts of pomegranate fruit extract, 2-4 parts of peony flower extract, 2-4 parts of olive leaf extract, and 1-3 parts of snow lotus extract; S2: placing the modified initial solution described in S1 in an electrostatic sprayer, spraying the modified initial solution through a nozzle under the conditions of a voltage of 15-20 kV, a propulsion flow rate of 1-2 mL / h, and a receiving distance of 20-30 cm, and drying to obtain a modified plant extract complex; wherein the modifier described in S1 is zein; The mixed solvent is ethanol: water with a mass ratio of 8:2; In the modified initial solution, the concentration of the modifier is 4-6 wt %, and the concentration of the plant extract complex is 1-3 wt %; The finishing agent comprises cationic cellulose ether, cationic guar gum, and zinc pyrrolidone carboxylate in a mass ratio of (2-4): (0.5-1.5): (0.2-0.6); The functional composition comprises glycerol, proline and keratin, with a mass ratio of (2.4-3.7): (1.8-2.3): (0.2-0.8).

2. The shampoo with hair loss prevention and hair strengthening function according to claim 1, characterized in that: The modified plant extract complex includes, by weight, 3 parts of Platycladus orientalis leaf extract, 2 parts of Norway spruce extract, 1 part of ginseng leaf extract, 1 part of ginger extract, 2 parts of rosemary extract, 1 part of pomegranate fruit extract, 2 parts of peony flower extract, 2 parts of olive leaf extract, and 1 part of snow lotus extract.

3. The shampoo with hair loss prevention and hair strengthening function according to claim 1, characterized in that: The surfactant includes one or more of sodium pentadecyl sulfate, sodium lauryl alcohol ether sulfate, ammonium lauryl polyoxyethylene ether sulfate, lauryl cocamidopropyl hydroxysulfobetaine, and lauryl coconut oil double-sided active ion sodium acetate.

4. The shampoo with hair loss prevention and hair strengthening function according to claim 1, characterized in that: The preservative is one or more of phenoxyethanol and DMDM ​​hydantoin.

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