Shampoo with hair loss preventing and hair strengthening functions and preparation method thereof

Abstract

The invention provides shampoo with hair loss preventing and hair strengthening functions. The shampoo is prepared from the following components in percentage by mass: 15 to 25 percent of a modified plant extract compound, 10 to 20 percent of a surfactant, 0.5 to 1 percent of a functional composition, 1 to 2 percent of an acid-base regulator, 0.2 to 0.4 percent of a finishing agent, 0.08 to 0.15 percent of a preservative and the balance of a solvent. According to the shampoo disclosed by the invention, various plant extract components are compounded and modified, so that the shampoo has good bioavailability on hair and scalp surfaces, can improve alopecia symptoms, and particularly has a good effect on alopecia caused by hair tension reduction due to bacterial infection in a 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 degree of damage to the scalp caused by ultraviolet rays and has a certain protective effect. In recent years, social competition pressure has continued to increase. Affected by multiple factors such as psychology, physiology, hair dyeing, and perming, the proportion of hair loss has become increasingly higher and is gradually developing towards 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 the cleaning effect, but also pay more attention to multiple functions such as hair solidification, anti-hair loss, and anti-dandruff. Especially for the increasingly younger consumer groups, how to improve the anti-hair loss and hair solidification 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 characteristics, and have broad application prospects in the field of cosmetics. Plant anti-hair loss and hair solidifying shampoo came into being, which not only conforms to the concept of green and sustainable development, but also can improve the nourishing, anti-hair loss and hair solidifying effects of shampoo, but its durability, anti-hair loss and hair solidifying effects are still not ideal. In addition, the existing plant anti-hair loss and hair solidifying shampoos on the market are usually for oily, dry and mixed hair. Many consumers are prone to choose the wrong shampoo due to inaccurate understanding of their own hair quality, resulting in the shampoo's effectiveness not being maximized. Summary of the invention

[0004] The purpose of the present invention is to provide a shampoo with anti-hair loss and hair strengthening functions and a preparation method thereof. By compounding and modifying a plurality of plant extract components, the shampoo has good bioavailability on the surface of hair and scalp, can improve the symptoms of hair loss, and has a good effect on hair loss caused by decreased hair tension due to bacterial infection in the scalp area. In addition, the shampoo can also play the role of repairing and preventing 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 include, 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 supplemented to a balance of 100%.

[0010] Preferably, the plant extract complex includes, 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 them are 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 and evenly, then add the plant extract complex and stir until a 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 a nozzle and dried to obtain a modified plant extract complex.

[0014] S1 The modifier 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 in a mass ratio of 8:2.

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

[0018] Applying plant extracts to shampoo has become the main research and development direction at this stage. However, due to the complex ingredients in the extracts and poor compatibility with the surface of the hair and the surface of the scalp, if they are directly added to the shampoo formulation method, the active ingredients in the plant extracts cannot be fully utilized, resulting in low bioavailability, and the antibacterial, anti-hair loss, and hair-fixing effects do not reach the optimal level. The inventor unexpectedly discovered that when the plant extracts are modified with zein, the anti-hair loss and hair-fixing effects of the shampoo can be effectively improved. This may be due to the good compatibility of zein between the scalp, hair and plant extracts. On the one hand, it can increase the uniformity between the powders of various plant extracts, and the modified plant extract complex has a good dispersion in the shampoo system to avoid stratification; on the other hand, during the rubbing of the hair and scalp in the shampoo, the active ingredients such as flavonoids, polyphenols, and terpenoid derivatives in the plant extracts are more easily absorbed and utilized, providing rich nutrients for nourishing the hair, effectively reducing the growth of bacteria on the scalp surface, and enhancing hair tension, especially for 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 surfactant is sodium pentadecyl sulfate, sodium dodecyl alcohol ether sulfate, and lauryl cocamidopropyl hydroxysulfobetaine, with a mass ratio of 7:10:4. The sodium pentadecyl sulfate CAS number: 27415-94-7, purchased from Shandong Hangjie New Materials Co., Ltd.; sodium dodecyl alcohol ether sulfate CAS number: 68585-34-2, purchased from Wuhan Lanabai Pharmaceutical Chemical Co., Ltd.; lauryl cocamidopropyl hydroxysulfobetaine CAS number: 4292-10-8, purchased from Guangzhou Zhonghai Chemical Co., Ltd.

[0021] The functional composition comprises 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 is glycerol, proline, and keratin, with a mass ratio of (2.4-3.7): (1.8-2.3): (0.2-0.8). The glycerol CAS number: 56-81-5, purchased from Taishan Changshun Glycerol Products Co., Ltd.; proline CAS number: 609-36-9, purchased from Shanghai MacLean Biochemical Technology Co., Ltd.; keratin CAS number: 68238-35-7, 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. The citric acid CAS number is 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 is 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, it can better prevent and nourish the hair. The cationic cellulose ether, cationic guar gum, and zinc pyrrolidone carboxylate are compounded and used, which can synergize with the modified plant extract complex to achieve multiple effects of softening, cleaning, anti-hair loss, hair solidification, and anti-dandruff. After a lot of research, the inventor 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, and it is 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. Under the premise of not affecting the absorption of plant extracts, the shampoo can better achieve the functions of anti-hair loss, hair solidification, and anti-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 preservative is phenoxyethanol and DMDM ​​hydantoin in a mass ratio of (0.2-0.4): (2-4). The phenoxyethanol CAS number: 204-589-7, purchased from Shanxi Jinyang Pharmaceutical Excipients Co., Ltd.; DMDM ​​hydantoin CAS number: 6440-58-0, purchased from Zhongshan Dixin Chemical Co., Ltd.

[0030] The solvent is water.

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

[0032] Add a surfactant into water, stir continuously and heat to 70-75°C, then add a finishing agent, stir until fully dissolved, 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 plays a bridging role, so that the effective ingredients in the plant extract can be 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 modified plant extract complex preparation method 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 structure of the complex 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 powder structure of the complex may be irregular and the sphericity may be uneven, resulting in poor stability and absorption of the shampoo, which will have an adverse effect on the anti-hair loss and hair solidification effects of the shampoo.

[0037] 3. The present invention uses a compound surfactant to give full play to the efficacy of the shampoo. When the surfactant is sodium pentadecyl sulfate, sodium lauryl alcohol ether sulfate, and lauryl cocamidopropyl hydroxysulfobetaine in a mass ratio of 7:10:4, it can better absorb grease and dirt on the hair and remove them with water, and the cleanliness and stability of the shampoo are better.

[0038] 4. The present invention adds 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) to shampoo, which can synergize with the zein in the modified plant extract complex, and can better prevent and nourish hair on the basis of improving the problem of hair loss.

[0039] 5. The shampoo with anti-hair loss and hair-fixing function provided by the present invention contains ingredients such as a modified plant extract complex, a surfactant, a finishing agent, and a functional composition, and is suitable for oily, dry, and mixed hair, and has a wider range of applications. At the same time, it has good bioavailability and good anti-hair loss and hair-fixing functions, especially for hair loss caused by bacterial infection in the scalp area. In addition, the appearance, cold resistance, and heat resistance of the obtained shampoo meet the requirements of GB / T29679-2013. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1

[0042] The present embodiment provides a shampoo with the function of preventing hair loss and strengthening hair. The shampoo 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 and evenly, then add the plant extract complex and stir until a 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 a 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 in a mass ratio of 8:2.

[0048] The plant extract complex described in S1 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. The extracts were all purchased from Xi'an Anao Biotechnology Co., Ltd.

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

[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 is 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 the shampoo, comprising the following steps:

[0057] Add a surfactant into water, stir continuously and heat to 70°C, then add a finishing agent, stir until fully dissolved, 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] The present 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 and evenly, then add the plant extract complex and stir until a 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 a 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 in 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 6wt% and the concentration of the plant extract complex is 3wt%.

[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 is 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 the shampoo, comprising the following steps:

[0074] Add a surfactant into water, stir continuously and heat to 75°C, then add a finishing agent, stir until fully dissolved, 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 6.5 with an acid-base regulator to obtain the shampoo.

[0075] Example 3

[0076] The present 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 and evenly, then add the plant extract complex and stir until a 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 a 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 in 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 is 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 the shampoo, comprising the following steps:

[0091] Add a surfactant into water, stir continuously and heat to 75°C, then add a finishing agent, stir until fully dissolved, lower the temperature to 40°C, add a modified plant extract complex and a preservative, stir continuously until dissolved, and 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 of 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 of 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 1:3:2 ratio of cationic cellulose ether, cationic guar gum and zinc pyrrolidonecarboxylate.

[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 old, healthy, including 15 women and 5 men, with hair length of 5-40 cm) with hair loss caused by 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 the results were fed back according to the 60-times combing method every week. 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 left front to left back and right front to right back, and count the number of hairs that fall out.

[0112] Usage: straighten the hair to avoid tangles, soak the hair at 40±2℃, take 15mL of the shampoo of Example 3 and put it on the palm, rub the bubbles and apply it to the hair, massage the 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] 90 volunteers aged 20-60 were invited and randomly divided into 9 groups, each group used the shampoo described in Examples 1-3 and Comparative Examples 1-6 for two months (the method of use is the same as the anti-hair loss effect test). Under an environment of 25±0.5℃ and humidity of 55±1.5%, the average water content of the stratum corneum of the scalp skin of each group before using the product and after using the shampoo for 2 months was calculated using Corneometer CM825 of German CK Company. 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 in 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 the scope of protection of the present invention.

Claims

1. A shampoo with anti-hair loss and hair strengthening functions, wherein the raw materials for preparing the shampoo include, by weight: 3-10 parts of Platycladus orientalis leaf extract and 1-8 parts of Norway spruce extract.

2. The shampoo with hair loss prevention and hair strengthening function according to claim 1, characterized in that: 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.

3. The shampoo with hair loss prevention and hair strengthening function according to claim 2, characterized in that: The raw materials for preparing the shampoo include, by weight, 4 parts of Platycladus orientalis leaf extract and 3 parts of Norway spruce extract.

4. The shampoo with hair loss prevention and hair strengthening function according to claim 3, characterized in that: The raw materials for preparing the shampoo further include, by mass percentage: 15-25% of a modified plant extract compound, 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 supplemented to a balance of 100%; 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.

5. The shampoo with hair loss prevention and hair strengthening function according to claim 4, characterized in that: The preparation method of the modified plant extract complex comprises the following steps: S1: dissolving the modifier in a mixed solvent, mixing thoroughly and evenly, adding the plant extract complex, and stirring to obtain a modified initial solution; 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 a nozzle and dried to obtain a modified plant extract complex.

6. The shampoo with hair loss prevention and hair strengthening function according to claim 5, characterized in that: S1 The modifier is one or more of water-soluble chitosan, zein, soy protein, wheat protein, and peanut protein.

7. The shampoo with hair loss prevention and hair strengthening function according to claim 5, 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.

8. The shampoo with hair loss prevention and hair strengthening function according to claim 4, characterized in that: The finishing agent is 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).

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

10. The method for preparing the shampoo with hair loss prevention and hair strengthening function according to any one of claims 4 to 9, characterized in that: The following steps are involved: Add a surfactant into water, stir continuously and heat to 70-75°C, then add a finishing agent, stir until fully dissolved, 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.

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