Essence for repairing pet skin problems and preparation method thereof

Abstract

The present invention provides an essence for repairing pet skin problems and a preparation method thereof, and belongs to the technical field of pet skin care. The essence comprises the following components by weight percentage: 0.1-1% plant extract; 0.1-0.5% moisturizer; 0.1-1% film former; 0.6-0.9% preservative and water remainder. The present invention is a mixture of Zanthoxylum fruit extract, pepper seed extract and peony root extract as a plant extract; a mixture of saccharide isomers, citric acid, sodium citrate and water as a moisturizer; and carboxymethyl deacetylated chitosan as a film former. During the implementation process, it is unexpectedly found that controlling the mass ratio of plant extract, moisturizer and film former can effectively improve the antibacterial effect of the essence, thereby improving the repair effect of the essence on the skin.

Description

Technical Field

[0001] The invention belongs to the technical field of pet skin care, and in particular relates to an essence for repairing pet skin problems and a preparation method thereof. Background Art

[0002] With the development and improvement of living standards and science and technology, the research on pet skin has become more and more detailed and in-depth. In the care of pet skin, in addition to the skin physical barrier that needs attention, the skin microbial barrier is also inseparable from the pet's skin health.

[0003] Having a good microbial barrier is crucial for the skin to be in good condition. Skin health depends largely on the types of microorganisms present on the skin surface. Most microorganisms are harmless to the skin and can even prevent the invasion of pathogens. However, once the microbial barrier is unbalanced, it will lead to serious skin problems. Most skin diseases are caused by mixed infections of fungi and mites and secondary bacterial infections. The most common skin diseases in pets include fungal skin diseases, bacterial skin diseases and complex skin diseases. The specific symptoms mainly include seborrheic dermatitis, acne, atopic dermatitis, itching, etc. Clinical manifestations include hair loss, scabs, dandruff, redness, swelling, pustules and cat black chins. In order to better improve pet skin problems from the root, existing technologies have developed a variety of products for skin microecological balance.

[0004] For example, Chinese patent CN112826790A discloses a pet shower gel for improving skin microecology and a preparation method thereof, wherein the raw materials for preparing the pet shower gel include the following components: probiotic fermentation extract, eco-nutrients, surfactants, chelating agents, moisturizers, thickeners, pH regulators, preservatives and water. The pet shower gel involved in the invention creatively combines probiotic fermentation extracts, eco-nutrients and other conventional additives, so that the shower gel has excellent effects of improving skin microecological balance and repairing skin barrier, and has significant moisturizing effect, and is safe and non-irritating.

[0005] Another example is Chinese patent CN112587553A, which discloses a composition for regulating the microecological balance of pet skin and its application, wherein the active ingredients include bacillus metabolites, chitosan and β-glucan, wherein the bacillus metabolites are composed of sodium polyglutamate with a molecular weight of less than 300 kDa, sodium polyglutamate with a molecular weight of more than 700 kDa and bacillus fermentation filtrate. The invention applies probiotic fermentation products to the study of pet skin microecology, and provides a composition for regulating the microecological balance of pet skin composed of bacillus metabolites, chitosan and β-glucan, etc., which regulates the water environment on the skin surface through the dual moisturizing factors of sodium polyglutamate with small molecular weight and medium molecular weight, and cooperates with the skin prebiotics in the filtrate of bacillus fermentation products, as well as chitosan and β-glucan, etc., to improve skin resistance and regulate the microbial community on the surface of pet skin, with simple preparation and significant application effect.

[0006] The compositions disclosed in the prior art can improve the balance of skin microecology, but generally have problems such as long medication time and easy recurrence. Therefore, it is urgent to develop an essence with good efficacy, low recurrence rate and good antibacterial properties for repairing pet skin problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention aims to provide an essence for repairing pet skin problems and a preparation method thereof. The essence is used in combination with plant extracts and moisturizers, which significantly improves the repair effect of pet skin problems. The essence has the characteristics of good efficacy, low recurrence rate and good antibacterial properties.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] In one aspect, the present invention provides an essence for repairing pet skin problems, comprising the following components by weight percentage:

[0010] Plant extract 0.1-1%; humectant 0.1-0.5%; film former 0.1-1%; preservative 0.6-0.9% and water as the balance.

[0011] in,

[0012] The plant extract is selected from one or more of Zanthoxylum bungeanum fruit extract, Pipernigrum seed extract and Paeonia albiflora root extract;

[0013] Preferably, the plant extract is a mixture of Zanthoxylum bungeanum fruit extract, Piper nigrum seed extract and Paeonia albiflora root extract;

[0014] More preferably, the plant extracts are Zanthoxylum bungeanum fruit extract, Piper nigrum seed extract and Paeonia albiflora root extract in a mass ratio of 4.5:1:4.5.

[0015] Further preferably, the plant extract is a product purchased from Guangzhou Ximu Biotechnology Co., Ltd. with the trade name of Shuangjiao Antipruritic Agent XM-225.

[0016] The preservative is a mixture of phenoxyethanol, caprylyl glycol and ethylhexylglycerin.

[0017] The moisturizing agent is a mixture of sugar isomers, citric acid, sodium citrate and water.

[0018] Preferably, the moisturizing agent is a product purchased from DSM with the trade name PENTAVITING.

[0019] The film-forming agent is carboxymethyl deacetylated chitosan.

[0020] The present invention uses a mixture of Zanthoxylum bungeanum fruit extract, Piper nigrum seed extract and Paeonia albiflora root extract as a plant extract; uses a mixture of saccharide isomers, citric acid, sodium citrate and water as a humectant; and uses carboxymethyl chitosan as a film-forming agent. During the implementation process, it is unexpectedly found that controlling the mass ratio of the plant extract, the humectant and the film-forming agent can effectively improve the antibacterial effect of the essence, thereby improving the repairing effect of the essence on the skin.

[0021] Preferably, the mass ratio of the plant extract, the moisturizing agent and the film-forming agent is 1-5:1:1-5; such as 1:1:1, 5:1:5, 1:1:2, 1:1:3, 1:1:4, 1:1:5, 2:1:1, 2:1:2, 2:1:3, 2:1:4, 2:1:5, 3:1:1, 3:1:2, 3:1:3, 3:1:4, 3:1:5, 4:1:1, 4:1:2, 4:1:3, 4:1:4, 4:1:5, etc. Other specific values ​​within this numerical range can be selected and will not be described one by one here. More preferably, it is 5:1:5.

[0022] When the plant extract, moisturizing agent and film-forming agent meet the above mass ratio, the long-term antibacterial effect of the essence can be effectively improved, and the reproduction and stability of beneficial bacteria can be stimulated to a certain extent.

[0023] As a preferred embodiment, the essence for repairing pet skin problems comprises the following components by weight percentage:

[0024] Plant extract 0.5%; humectant 0.1%; film former 0.5%; preservative 0.8% and water as the balance.

[0025] As some preferred embodiments, the essence for repairing pet skin problems further comprises, by weight percentage, 0.1-0.5% octadecyl dimethyl betaine and 0.02-0.06% polyethylene glycol glucoside.

[0026] During the implementation of the present invention, it is unexpectedly found that controlling the mass ratio of octadecyl dimethyl betaine and polyethylene glycol glucoside can make the antibacterial effect of the essence last longer and the product more stable.

[0027] Preferably, the mass ratio of octadecyl dimethyl betaine and polyethylene glycol glucoside is 5-20:1; such as 5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 11:1, 12:1, 13:1, 14:1, 15:1, 16:1, 17:1, 18:1, 19:1, 20:1, etc. Other specific point values ​​within this numerical range can be selected, which will not be described one by one here.

[0028] On the other hand, the present invention also provides a method for preparing the above-mentioned essence for repairing pet skin problems, comprising the following steps:

[0029] Heat water to 85-90°C, keep the temperature constant for 15 minutes, cool down to below 40°C, add plant extract, moisturizer, film-forming agent and preservative in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

[0030] On the other hand, the present application also provides a method for preparing the above-mentioned essence for repairing pet skin problems, comprising the following steps:

[0031] Heat water to 85-90°C, keep the temperature constant for 15 minutes, cool to below 40°C, add plant extract, moisturizer, film former, preservative, octadecyl dimethyl betaine and polyethylene glycol glucoside in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The present invention uses a mixture of Zanthoxylum bungeanum fruit extract, Piper nigrum seed extract and Paeonia albiflora root extract as a plant extract; a mixture of saccharide isomers, citric acid, sodium citrate and water as a humectant; and carboxymethyl chitosan as a film-forming agent. During the implementation process, it was unexpectedly found that controlling the mass ratio of the plant extract, the humectant and the film-forming agent can effectively improve the antibacterial effect of the essence, thereby improving the moisturizing effect of the essence on the skin. Preferably, the mass ratio of the plant extract, the humectant and the film-forming agent is 5-10:1:5-10.

[0034] (2) During the implementation of the present invention, it was unexpectedly found that controlling the mass ratio of octadecyl dimethyl betaine and polyethylene glycol glucoside can make the antibacterial effect of the essence last longer and the product more stable; preferably, the mass ratio of octadecyl dimethyl betaine and polyethylene glycol glucoside is 10-20:1. DETAILED DESCRIPTION

[0035] In order to further explain the technical means and effects adopted by the present invention, the technical solution of the present invention is further described below in conjunction with the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.

[0036] The source information of the raw materials involved in the following examples or comparative examples is as follows in Table 1:

[0037] Table 1

[0038]

[0039] Other raw materials for preparation can also be purchased from commercial sources.

[0040] Example 1 A serum for repairing pet skin problems

[0041] The components in percentage by weight are shown in Table 2 below:

[0042] Table 2

[0043]

[0044] Preparation method:

[0045] Heat water to 90°C, keep the temperature constant for 15 minutes, cool down to below 40°C, add plant extract, moisturizer, film-forming agent and preservative in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

[0046] Example 2 A serum for repairing pet skin problems

[0047] The components in percentage by weight are shown in Table 3 below:

[0048] Table 3

[0049]

[0050] Preparation method:

[0051] Heat water to 90°C, keep the temperature constant for 15 minutes, cool down to below 40°C, add plant extract, moisturizer, film-forming agent and preservative in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

[0052] Example 3 A serum for repairing pet skin problems

[0053] The components in percentage by weight are shown in Table 4 below:

[0054] Table 4

[0055]

[0056] Preparation method:

[0057] Heat water to 90°C, keep the temperature constant for 15 minutes, cool down to below 40°C, add plant extract, moisturizer, film-forming agent and preservative in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

[0058] Example 4: A serum for repairing pet skin problems

[0059] The components are as follows in Table 5 by weight percentage:

[0060] Table 5

[0061]

[0062] Preparation method:

[0063] Heat water to 90°C, keep the temperature constant for 15 minutes, cool to below 40°C, add plant extract, moisturizer, film former, preservative, octadecyl dimethyl betaine, polyethylene glycol glucoside in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

[0064] Example 5: A serum for repairing pet skin problems

[0065] The components in percentage by weight are shown in Table 6 below:

[0066] Table 6

[0067]

[0068] Preparation method:

[0069] Heat water to 90°C, keep the temperature constant for 15 minutes, cool to below 40°C, add plant extract, moisturizer, film former, preservative, octadecyl dimethyl betaine, polyethylene glycol glucoside in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

[0070] Example 6: A serum for repairing pet skin problems

[0071] The components in percentage by weight are shown in Table 7 below:

[0072] Table 7

[0073]

[0074] Preparation method:

[0075] Heat water to 90°C, keep the temperature constant for 15 minutes, cool to below 40°C, add plant extract, moisturizer, film former, preservative, octadecyl dimethyl betaine and polyethylene glycol glucoside in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

[0076] Comparative Example 1

[0077] The difference from Example 3 is that the mass ratio of the plant extract, the moisturizing agent and the film-forming agent is 2:1:7, as shown in Table 8 below:

[0078] Table 8

[0079]

[0080] The other components, contents and preparation method are the same as those in Example 3.

[0081] Comparative Example 2

[0082] The difference from Example 3 is that the mass ratio of the plant extract, the moisturizing agent and the film-forming agent is 2:7:1, as shown in Table 9 below:

[0083] Table 9

[0084]

[0085] The other components, contents and preparation method are the same as those in Example 3.

[0086] Comparative Example 3

[0087] The difference from Example 6 is that polyethylene glycol glucoside is replaced by octadecyl dimethyl betaine, and other components, contents and preparation methods are the same as those of Example 6.

[0088] Comparative Example 4

[0089] The difference from Example 6 is that octadecyl dimethyl betaine glycoside is replaced by cocamidopropyl betaine, and other components, contents and preparation methods are the same as those of Example 6.

[0090] Comparative Example 5

[0091] The difference from Example 6 is that the mass ratio of octadecyl dimethyl betaine and polyethylene glycol glucoside is 1:1, that is, 0.16% octadecyl dimethyl betaine and 0.16% polyethylene glycol glucoside, and the other components, contents and preparation method are the same as those in Example 6.

[0092] Comparative Example 6

[0093] The difference from Example 6 is that the mass ratio of octadecyl dimethyl betaine to polyethylene glycol glucoside is 1:4, that is, 0.064% of octadecyl dimethyl betaine and 0.256% of polyethylene glycol glucoside, and the other components, contents and preparation method are the same as those in Example 6.

[0094] Effect experiment

[0095] 1. Irritation test

[0096] 1.1 Experimental animals and housing conditions

[0097] Experimental animals: 6 New Zealand rabbits (ordinary grade, female. Weight 2.0-2.5 kg), animal certificate number: NO.430730241100185185.

[0098] Source of animals: purchased from Hunan Tianping Biotechnology Co., Ltd., the experimental animal production license number is: SCXK (Xiang) 2023-0011.

[0099] Breeding environment: normal environment, temperature 20.7-23.4℃, relative humidity 60.9-66.2RH%, experimental animal environment use license number: SYXK (Guangdong) 2023-0216.

[0100] Feed: Provided by Jiangquan Feed Factory of Linyi Shengquan Oil Chemical Co., Ltd., license number: Lu Feed Certificate (2024) 16062, quality certificate number: NO.2024061500223.

[0101] Experimental procedures: Take 6 adult, healthy rabbits with intact skin. About 24 hours before the test, trim the hair on both sides of the rabbit's back spine without damaging the epidermis. The hair removal area is 3cm×3cm on the left and right, and the application area is 2.5cm×2.5cm.

[0102] Take 0.5 mL of the test substance prepared in Examples 1-6 and apply it on the left skin, and apply the same amount of distilled water on the right skin as a control. Apply once a day for 14 consecutive days. Starting from the second day, hair should be removed before each application, and the residual test substance should be removed with warm water. After one hour, observe the skin irritation reaction and determine the irritation according to the test method of Toxicology Test Method 4 Skin Irritation / Corrosion Test in Chapter VI of the "Technical Specifications for Safety of Cosmetics" (2015 Edition).

[0103] Experimental results:

[0104] With reference to the test method of skin irritation / corrosion test in Chapter VI of the "Technical Specifications for Safety of Cosmetics" (2015 edition), the mild-non-irritating effect of the essences prepared in Examples 1-6 was tested in an animal study. This test is based on the irritation of the test product to the skin of New Zealand rabbits as an objective indicator. The results are: the test product irritates the rabbits multiple times, and the average score of the skin irritation reaction of each animal per day is 0.00, which is non-irritating, indicating that the essence is mild and non-irritating.

[0105] 2. Moisturizing performance test

[0106] 1.1 Experimental animals and housing conditions

[0107] Experimental animals: 5 New Zealand rabbits (ordinary grade, female. Weight 2.0-2.5 kg), animal certificate number: NO.430730241100185185.

[0108] Source of animals: purchased from Hunan Tianping Biotechnology Co., Ltd., the experimental animal production license number is: SCXK (Xiang) 2023-0011.

[0109] Breeding environment: normal environment, temperature 20.7-23.4℃, relative humidity 60.9-66.2RH%, experimental animal environment use license number: SYXK (Guangdong) 2023-0216.

[0110] Feed: Provided by Jiangquan Feed Factory of Linyi Shengquan Oil Chemical Co., Ltd., license number: Lu Feed Certificate (2024) 16062, quality certificate number: NO.2024061500223.

[0111] Experimental procedures: Take 5 adult, healthy rabbits with intact skin. About 24 hours before the test, trim the hair on one side of the rabbit's back spine without damaging the epidermis. The trimmed area is 3cm×3cm, and the application area is 2.5cm×2.5cm.

[0112] Take 0.5 mL of the test substance prepared in Examples 1-3 and Comparative Examples 1-2 and apply it on the depilated skin. Apply once a day for 7 consecutive days. Before each application, the hair should be removed and the residual test substance should be removed with warm water.

[0113] The skin moisture content of the experimental animals was measured before and after use. The skin moisture content was measured using a skin moisture meter. The test results were expressed by the set humidity measurement value (Moisture Measurement Value, MMV / %). At the same time, the hydrating and moisturizing effect of the product was detected by the skin moisture content change rate, where the change rate was (moisture content after use = moisture content before use) / moisture content before use * 100%. The larger the value, the better the hydrating and moisturizing effect of the product. The measurement results are shown in Table 10.

[0114] Table 10

[0115]

[0116] According to the test results in Table 10 above, the essences prepared in Examples 1-3 of the present invention have better moisturizing effects, especially in Example 3, the essence obtained by controlling the mass ratio of the plant extract, the moisturizing agent and the film-forming agent to be 5:1:5 has the best moisturizing effect. When the mass ratio of the plant extract, the moisturizing agent and the film-forming agent in the comparative example is changed and is not within the protection scope of the present application, the moisturizing property of the essence will be affected, because the moisturizing agent will directly affect the hydrating and moisturizing effects of the essence, and the film-forming agent will affect the loss of water. Therefore, only when it is controlled within the protection scope of the present application, the obtained essence has better moisturizing performance.

[0117] 3. Antibacterial test

[0118] Test bacteria: Staphylococcus aureus (ATCC6538), Escherichia coli (ATCC8739), Candida albicans (ATCC10231);

[0119] Three liquid culture media were prepared: bile salt lactose liquid culture medium (BL), 7.5% sodium chloride broth and malt extract powder liquid culture medium, and sterilized by high pressure steam sterilization at 121°C for 15 minutes. The liquid culture medium containing three different test bacteria was placed in a constant temperature shaker at 28°C and 128rpm / min for constant temperature shaking culture for 24 hours to activate the strains; after shaking culture to the stable period, it was taken out from the constant temperature shaker, plate counts were performed, and the bacterial suspensions of the three test strains were placed in a refrigerator for storage and standby.

[0120] Prepare TSA medium and sterilize it for later use. Dilute Escherichia coli, Candida albicans, and Staphylococcus aureus with sterile water to make the number of live bacteria in the bacterial suspension reach 10. 6 -10 7 cfu / mL for future use.

[0121] Pour the sterilized TSA culture medium evenly into a sterile culture dish with a diameter of 9 cm to complete the pouring of the plate culture medium. Use a sterile pipette to transfer the diluted bacterial suspension and apply it to the plate. Take the Oxford cup and gently place it on the culture medium plate. Add 100 μL of essence sample (Example 1-6 and Comparative Example 3-6) to the Oxford cup, and conduct three parallel experiments, using sterile water as a negative control and penicillin as a positive control. After the experimental operation, the fungal culture dish was placed in a 28°C constant temperature incubator for 1 hour for observation and recording, and the bacterial culture dish was placed in a 37°C constant temperature incubator for 1 hour for observation and recording. Observation results show that the sample to be tested diffuses around the Oxford cup as the origin to form a circular area where the colony does not grow as an inhibition zone. Use a vernier caliper to measure the diameter of each inhibition zone, take the average value, and the size of the inhibition zone determines the antibacterial effect of the essential oil. The test results are shown in Table 11 below.

[0122] Table 11

[0123]

[0124] According to the detection in Table 11 above, the essences prepared in Examples 1-3 of the present invention all have good antibacterial effects, especially the essence prepared in Example 3 has the best antibacterial effect, indicating that the mixture of Zanthoxylum bungeanum fruit extract, Piper nigrum seed extract and Paeonia albiflora root extract is the plant extract; the mixture of saccharide isomers, citric acid, sodium citrate and water is the humectant; and carboxymethyl chitosan is the film-forming agent. During the implementation process, it was unexpectedly found that the essence obtained by controlling the mass ratio of the plant extract, the humectant and the film-forming agent to 5:1:1 had the best antibacterial effect, while the addition of octadecyl dimethyl betaine and polyethylene glycol glucoside in Examples 4-6 did not have a significant effect on the antibacterial performance.

[0125] 4. Antibacterial stability test

[0126] The above "3. Antibacterial Test" was continued, that is, after the experimental operation, the Staphylococcus aureus culture dish was placed in a constant temperature incubator at 28°C for 48 hours and then observed and recorded, and the antibacterial stability results of the essences prepared in Examples 3-6 and Comparative Examples 3-6 were observed, and the diameters of the antibacterial circles were measured with a vernier caliper, and the average value was taken. The size of the antibacterial circle was used to judge the antibacterial effect of the essential oil. The test results are shown in Table 12 below.

[0127] Table 12

[0128]

[0129] According to the test data in Table 12 above, in Example 3, no octadecyl dimethyl betaine and polyethylene glycol glucoside were added, and the antibacterial stability thereof was significantly reduced, while in Examples 4-6, a mixture of octadecyl dimethyl betaine and polyethylene glycol glucoside was added, and the antibacterial stability of the essence was improved, especially when the mass ratio of octadecyl dimethyl betaine and polyethylene glycol glucoside was controlled to be 15:1 in Example 6, the antibacterial stability of the obtained essence was the best, while changing the types of octadecyl dimethyl betaine and polyethylene glycol glucoside in Comparative Examples 3-4, or changing the mass ratio of octadecyl dimethyl betaine and polyethylene glycol glucoside in Comparative Examples 5-6 would affect the effect.

[0130] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. An essence for repairing pet skin problems, characterized in that: The composition includes the following components by weight percentage: Plant extract 0.1-1%; moisturizer 0.1-0.5%; film former 0.1-1%; preservative 0.6-0.9% and water balance; The moisturizing agent is a mixture of sugar isomers, citric acid, sodium citrate and water; The film-forming agent is carboxymethyl deacetylated chitosan; The plant extracts are Zanthoxylum bungeanum fruit extract, pepper seed extract and peony root extract in a mass ratio of 4.5:1:4.5; The mass ratio of the plant extract, the moisturizing agent and the film-forming agent is 1-5:1:1-5.

2. The essence according to claim 1, characterized in that: The preservative is a mixture of phenoxyethanol, caprylyl glycol and ethylhexylglycerin.

3. The essence according to claim 1, characterized in that: The mass ratio of the plant extract, the moisturizing agent and the film-forming agent is 5:1:

5.

4. The essence according to any one of claims 1 to 3, characterized in that: The composition includes the following components by weight percentage: Plant extract 0.5%; humectant 0.1%; film former 0.5%; preservative 0.8% and water as the balance.

5. The essence according to claim 1, characterized in that: The essence for repairing pet skin problems further comprises, by weight percentage, 0.1-0.5% of octadecyl dimethyl betaine and 0.02-0.06% of polyethylene glycol glucoside.

6. The essence according to claim 5, characterized in that: The mass ratio of octadecyl dimethyl betaine to polyethylene glycol glucoside is 5-20:

1.

7. The essence according to claim 6, characterized in that: The mass ratio of octadecyl dimethyl betaine to polyethylene glycol glucoside is 15:

1.

8. The method for preparing the essence according to any one of claims 1 to 4, characterized in that: The steps include: Heat water to 85-90°C, keep the temperature constant for 15 minutes, cool down to below 40°C, add plant extract, moisturizer, film-forming agent and preservative in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

9. The method for preparing the essence according to any one of claims 5 to 7, characterized in that: The steps include: Heat water to 85-90°C, keep the temperature constant for 15 minutes, cool to below 40°C, add plant extract, moisturizer, film former, preservative, octadecyl dimethyl betaine and polyethylene glycol glucoside in sequence and stir evenly until there are no solid particles, and cool to room temperature to obtain the essence.

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