Skin care composition containing Kakadu plum extract and preparation method thereof

Abstract

The invention relates to a skincare composition containing a Kakadu plum extract and a preparation method of the skincare composition. The skincare composition containing the Kakadu plum extract comprises the Kakadu plum extract, a centella asiatica extract, betaine, a humectant, a thickening agent, a chelating agent, a preservative, a solubilizer, essence, citric acid, sodium citrate and pure water. The Kakadu plum extract, the centella asiatica extract and the betaine are added into the skin care product to form the skin care composition, the advantages of the Kakadu plum extract, the centella asiatica extract and the betaine are fully played through selection of effective components and reasonable matching of the use amounts of the components, and the Kakadu plum extract, the centella asiatica extract and the betaine supplement each other to achieve a synergistic effect, so that skin inflammation can be effectively relieved, and the skin care effect is improved. Uncomfortable symptoms such as redness and swelling and pruritus are relieved, so that the occurrence of acnes is reduced, the effect of soothing the skin is achieved, and the skin is helped to recover a healthy state.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of daily chemicals, and particularly relates to a skin care composition containing Kakadu plum extract and a preparation method thereof. BACKGROUND

[0002] With the improvement of people's living standards and the increase of attention to their own health, skin health problems are increasingly valued. Sensitive skin and acne skin are two common skin problems, which bring many troubles to consumers. Sensitive skin usually shows impaired skin barrier function, and is easily irritated by external stimuli to cause redness, itching, stinging and other symptoms. Acne skin is usually caused by excessive sebum secretion, abnormal keratinization of hair follicles and infection of Propionibacterium acnes, and shows pimples, papules, pustules and even nodules on the face, back and other parts.

[0003] At present, although there are various skin care products for sensitive skin and acne skin on the market, there are still some problems. For sensitive skin, although some products have certain soothing effect, they may further damage the skin barrier in the long-term use, making the skin more susceptible to Propionibacterium acnes infection and causing acne. For acne skin, although some acne-removing products can relieve symptoms in the short term, they may cause side effects such as dry skin and peeling, and even aggravate skin sensitivity. In addition, many products lack specificity and synergy in ingredients, and are difficult to meet the dual needs of sensitive skin and acne skin. Therefore, there is an urgent need to develop a skin care composition that can simultaneously target sensitive skin and acne skin problems, and has multiple functions such as soothing, repairing and acne-removing. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a skin care composition containing Kakadu plum extract and a preparation method thereof. The present application uses the extract of natural effective ingredient Kakadu plum as the main active substance from the perspective of skin care products, and applies it to people with acne skin and sensitive skin. Through the selection and reasonable collocation of Kakadu plum extract, asiaticoside extract and betaine components, the skin inflammation can be relieved, the redness can be reduced, the recovery of acne can be promoted, the skin can be soothed, and the skin can be helped to return to a healthy state.

[0005] The technical solution adopted by the present application to solve the above problems is as follows:

[0006] On the one hand, the present application provides a skin care composition containing Kakadu plum extract, which comprises the following components by weight percentage:

[0007] (A) Kakadu plum extract 2%-10%;

[0008] (B) asiaticoside extract 0.5%-5%;

[0009] (C) Betaine 0.5% - 5%;

[0010] (D) Humectant 2% - 10%;

[0011] (E) Thickening agent 0.01% - 0.5%;

[0012] (F) Chelating agent 0.01% - 0.5%;

[0013] (G) Preservative 0.5% - 2%;

[0014] (H) Solubilizer 0.1% - 2%;

[0015] (I) Fragrance 0.01% - 0.1%;

[0016] (J) Citric acid 0.001% - 0.1%;

[0017] (K) Sodium citrate 0.001% - 0.1%;

[0018] (L) Pure water to 100%.

[0019] In the above technical solution, vitamin C in the Kakadu plum extract has an antioxidant effect, can scavenge free radicals in the body, reduce the production of inflammatory mediators, and reduce inflammatory reactions; at the same time, it also participates in the synthesis of collagen, helps to maintain the integrity of tissues such as skin, and promotes the repair of damaged tissues, thereby playing a soothing effect. The Centella asiatica extract can soften the stratum corneum and increase the gap between keratinocytes while resisting inflammation and acne soothing, thereby promoting the penetration of effective ingredients into the deep layer of the skin, so that the Kakadu plum extract has better acne soothing effect. At the same time, betaine can prevent skin water evaporation, enhance the barrier function of the skin, reduce the loss of water on the surface of the skin, and thus maintain the water balance of the skin.

[0020] The skin care composition containing Kakadu plum extract of the present application fully utilizes the advantages of Kakadu plum extract, Centella asiatica extract and betaine by selecting effective ingredients and reasonably matching the use amount of each component, and the three components are complementary and synergistic, which can effectively relieve skin inflammation, reduce symptoms such as redness and itching, thereby reducing the occurrence of acne and playing a soothing effect on the skin, and helping the skin to restore to a healthy state.

[0021] Further, the preparation method of the Kakadu plum extract comprises the following steps:

[0022] S1. The Kakadu plum is washed, dried, and ultra-finely pulverized to pass through a 100-mesh sieve, and then added to a propylene glycol aqueous solution, mixed uniformly, and filtered to obtain a Kakadu plum filtrate;

[0023] S2. Compound biological enzymes are added to the Kakadu plum filtrate for enzymolysis, and the enzyme is inactivated to obtain an enzymolysis liquid;

[0024] S3. mixing the enzymatic solution with an extraction solvent, extracting using ultrasonic extraction method, and obtaining a separation solution after filtration, wherein the separation solution is the Vaccinium bracteatum extract.

[0025] Preferably, in the step S1, the drying temperature is 75-80℃, the propylene glycol solution is 30vol%-45vol% propylene glycol aqueous solution; the mass ratio of the Vaccinium bracteatum to the propylene glycol solution is (2.5-3):1.

[0026] Preferably, in the step S2, the complex biological enzyme is cellulase, phospholipase and transglycosidase; the weight ratio of the cellulase, phospholipase and transglycosidase is 2:(1-2):(1-2); the added amount of the complex biological enzyme is 0.3%-3.0% of the weight of the Vaccinium bracteatum filtrate; in the step S2, the enzymatic conditions include pH 5.5-6.5 and temperature 50-65℃; in the step S2, the enzyme inactivation step includes rapidly increasing the temperature to 90-100℃ after enzymolysis for rapid inactivation for 1 minute, and then decreasing the temperature to 50-65℃.

[0027] Preferably, in the step S3, the extraction solvent is an alcohol solution, and the added amount of the extraction solvent is 80%-85% of the weight of the enzymatic solution; in the step S3, the specific steps of ultrasonic extraction include: inputting the enzymatic solution from the feeding port of the ultrasonic extraction machine to the extraction tube, and inputting the extraction solvent from the residue discharge end of the ultrasonic extraction machine to the extraction tube after heating, and then performing countercurrent ultrasonic extraction under normal pressure in the extraction tube.

[0028] Further, the humectant is one or more of glycerol, glycerol polyether, allantoin and hyaluronic acid.

[0029] The role of the humectant is to form a thin film on the skin surface, seal the moisture in the skin, prevent water evaporation, and also hinder the absorption of moisture in the air by the skin, so as to maintain the proper moisture of the skin. The humectant is used to simulate the natural moisturizing system composed of oil, water and NMF in human skin, and acts to delay water loss, increase dermal-epidermal water penetration, temporarily protect the skin, reduce damage and promote the repair process. Among them, glycerol is a commonly used humectant, which is relatively mild and has no obvious irritation to the body, and has the effect of moisturizing and nourishing; and allantoin and sodium hyaluronate are also the most commonly used humectants in skin care cosmetics.

[0030] Further, the thickening agent is one or more of starch, guar gum, gum arabic, xanthan gum, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl starch, sodium polypropylate, and polyethylene glycol derivatives.

[0031] Thickeners can increase the viscosity of cosmetic systems, change their rheological properties, so that the cosmetics have suitable consistency, texture and stability. Such substances can make the dispersed phase (such as oil droplets, pigment particles, etc.) in the cosmetics uniformly dispersed in the continuous phase through various mechanisms, such as increasing the intermolecular interaction force, forming a spatial network structure, etc., to prevent phenomena such as delamination, precipitation, etc., while also improving the spreadability, spreadability and makeup retention of the cosmetics, etc., to enhance the sensory experience of the user and the quality stability of the product.

[0032] Further, the chelating agent is one or more of sodium pyrophosphate, sodium metasilicate, ethylenediaminetetraacetic acid, disodium ethylenediaminetetraacetate, citric acid, citrate, chitosan, hydroxyethyl ethylenediaminetriacetate, dithioglyceral, sodium gluconate, modified starch.

[0033] Chelating agents can form stable chelates with metal ions (such as iron, copper, zinc, etc.) brought in by cosmetic raw materials or packaging materials, preventing metal ions from causing oxidation reactions, thereby extending the shelf life of cosmetics and maintaining their color, aroma and texture stability. By binding to trace metal ions on the surface of the skin, chelating agents can regulate the ionic environment of the skin, helping active ingredients to penetrate and function better. At the same time, it can also improve the texture and skin feel of cosmetics, making the product smoother and more uniform when applied, improving the user's experience.

[0034] Further, the preservative is one or more of Freshone, hexylene glycol, sodium benzoate.

[0035] Preservatives can interfere with the enzyme system of microorganisms, disrupt their normal metabolism, inhibit enzyme activity, and cause protein coagulation and denaturation, interfering with their survival and reproduction. The role of preservatives in cosmetics is to prevent the growth of heat-resistant Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, mold and yeast, etc.

[0036] Further, the solubilizing agent is one or more of Tween solubilizing agent, hydrogenated castor oil solubilizing agent, polyethylene glycol solubilizing agent.

[0037] Solubilizing agents are surfactants with hydrophilic and hydrophobic groups. In cosmetics, when the concentration of solubilizing agents reaches a certain value, micelles will be formed, and the insoluble substances will be wrapped in the internal hydrophobic region of the micelles, while the external hydrophilic region of the micelles interacts with the water phase in the cosmetics, so that the insoluble substances are uniformly dispersed in the solution in the form of molecules or small particles, achieving the effect of solubilization. Solubilizing agents can help improve the odor, color and texture of cosmetics, and enhance the user's experience.

[0038] In another aspect, the present application also provides a preparation method of the above-mentioned skin care composition, characterized in that it comprises the following steps:

[0039] ① Put moisturizer, thickening agent and chelating agent into a beaker, add 85-90℃ pure water, homogenize until uniform and no particles, cool to room temperature while stirring, to obtain material 1;

[0040] ② Add preservative to another beaker and heat to no particle state, and add to material 1 and stir until uniform, to obtain material 2;

[0041] ③ Dissolve betaine into an aqueous solution and add to material 2 and stir until uniform, to obtain material 3;

[0042] ④ Add Kakadu plum extract and Centella asiatica extract to material 3 and stir until uniform, to obtain material 4;

[0043] ⑤ Mix essence and solubilizer until uniform, and add to material 4 and stir until uniform, to obtain material 5;

[0044] ⑥ Add citric acid and sodium citrate to material 5, adjust pH to 5.5-6.5, and supplement with pure water to 100%, to obtain the final product.

[0045] The present application has the following beneficial effects:

[0046] 1. The skin care composition containing Kakadu plum extract of the present application, by adding Kakadu plum extract, Centella asiatica extract and betaine to the skin care product to form a skin care composition, through the selection of effective ingredients and the reasonable collocation of the amount of each component, the advantages of Kakadu plum extract, Centella asiatica extract and betaine are fully played, and the three components are complementary and synergistic, which can effectively relieve skin inflammation, reduce discomfort symptoms such as redness and itching, thereby reducing the occurrence of acne, playing the role of soothing the skin, and can enhance the skin barrier and help the skin to restore to a healthy state.

[0047] 2. The present application uses enzyme extraction method and ultrasonic assisted extraction method to prepare and extract Kakadu plum extract, and the collocation of the two extraction methods can greatly shorten the extraction time and improve the extraction efficiency, ensure complete extraction, and obtain extract with high purity. The preparation method of Kakadu plum extract of the present application has the advantages of high efficiency, safety, environmental protection, simple process, easy operation, no influence on the structure and activity of the extract, and can maximize the retention of the biological activity of the effective components, and the obtained extract has less impurities, and the effective components are easy to separate and purify. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and technical advantages of the present application clearer, specific examples will be described in detail below, but the protection scope of the present application is not limited to the following specific examples, the described examples are only a part of the examples of the present application, rather than all the examples, and are not a limitation of the present application. Based on the examples in the present application, all other examples obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0049] Unless otherwise defined, all the professional terms used below have the same meaning as generally understood by those skilled in the art. The professional terms used in the present application are only for the purpose of describing specific examples, and are not intended to limit the protection scope of the present application.

[0050] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application can be purchased from the market or can be prepared by existing methods.

[0051] Examples 1-4 of the present application each provide a skin care composition containing Kakadu plum extract, and Comparative Examples 1-7 each provide a skin care composition, the amount of preparation raw materials of which is shown in Table 1 below; the unit is weight percentage.

[0052] Table 1 Preparation raw material formula table of examples and comparative examples

[0053]

[0054]

[0055] Among them, the extract of Centella asiatica is purchased from Guilin Lain Bio-technology Co., Ltd.

[0056] Among them, the preparation method of Kakadu plum extract comprises the following steps:

[0057] S1. Wash and dry Kakadu plum, and super-micro powder it to pass through a 100-mesh sieve, add propylene glycol aqueous solution, mix uniformly, and filter to obtain Kakadu plum filtrate;

[0058] S2. Add composite biological enzyme to the Kakadu plum filtrate for enzymolysis, and obtain enzyme hydrolysate after enzyme inactivation;

[0059] S3. Mix the enzyme hydrolysate uniformly with an extraction solvent, use ultrasonic extraction method for extraction, and obtain separation liquid after filtration, which is the Kakadu plum extract.

[0060] Specifically, in the step S1, the drying temperature is 75℃, the propylene glycol solution is 40vol% propylene glycol aqueous solution; and the mass ratio of the Kakadu plum to the propylene glycol solution is 2.5:1.

[0061] In the step S2, the complex biological enzyme is cellulase, phospholipase and transglycosidase; the weight ratio of the cellulase, phospholipase and transglycosidase is 2:1.5:1.5; the adding amount of the complex biological enzyme is 2% of the weight of the Kakadu plum filtrate; in the step S2, the enzymolysis condition includes pH 5 and temperature 60℃; in the step S2, the enzyme inactivation step includes rapidly increasing the temperature to 95℃ after the enzymolysis to rapidly inactivate for 1 minute and decreasing the temperature to 60℃.

[0062] In the step S3, the extraction solvent is alcohol solution, and the adding amount of the extraction solvent is 82% of the weight of the enzymolysis solution; in the step S3, the specific step of the ultrasonic extraction includes inputting the enzymolysis solution from the feeding port of the ultrasonic extraction machine to the extraction tube, inputting the extraction solvent from the residue discharging end of the ultrasonic extraction machine to the extraction tube by heating, and performing countercurrent ultrasonic extraction under normal pressure in the extraction tube.

[0063] The preparation method of the skin care composition of the above embodiment is as follows:

[0064] ① Put the moisturizing agent, thickening agent and chelating agent into a beaker, add 85℃ pure water, homogenize to a uniform and particle-free state, cool to room temperature while stirring, and obtain material 1;

[0065] ② Add the preservative to another beaker and heat to a particle-free state, and then add to material 1 and stir uniformly to obtain material 2;

[0066] ③ Dissolve the betaine into an aqueous solution and add to material 2 and stir uniformly to obtain material 3;

[0067] ④ Add the Kakadu plum extract and centella asiatica extract to material 3 and stir uniformly to obtain material 4;

[0068] ⑤ Mix the essence and solubilizer uniformly and add to material 4 and stir uniformly to obtain material 5;

[0069] ⑥ Add citric acid and sodium citrate to material 5, adjust the pH to 6, and supplement pure water to 100% to obtain the material.

[0070] The preparation method of the skin care composition of the comparative example can be obtained in the same way. If there is no added component, it can be deleted in the corresponding preparation step.

[0071] Select volunteers to use the skin care compositions of the examples and the comparative example and perform instrument efficacy evaluation, which includes skin a* value change value, skin hemoglobin change value, and trans-epidermal water loss change value test. In addition, the volunteers for testing the skin hemoglobin change value fill out a questionnaire to score the soothing effect and acne-removing effect.

[0072] The instrument efficacy evaluation test method is as follows:

[0073] 1. Skin a* value change value

[0074] Test instrument and principle: Multifunctional 3D skin imaging analyzer (HC1023Q) was used to obtain skin three-dimensional image and calculate skin a* value. The higher the skin a* value, the redder the skin. Before and after using the product, the a* value decreased significantly, indicating that the test sample had soothing effect, otherwise it did not have soothing effect.

[0075] Test method: 66 sensitive skin volunteers were selected and divided into 11 groups, each group corresponding to any one of the examples or comparative examples. The test site cannot use any sample (cosmetics or external medicine) for 3 days before testing, and cannot contact water for 3 hours. Before the test, the subjects need to clean the left forearm inside uniformly, the cleaning method is to wipe clean with dry facial tissue paper; mark the test area on the left forearm inside of the test subject, the test area is 5*5 cm; paste the adhesive tape on the skin, press for about 3 seconds, quickly tear vertically upward, change the new adhesive tape each time, repeat 10 times, until the skin is slightly red; before testing, the test subjects sit in the laboratory with temperature of 20-22℃ and relative humidity of 40-60% for at least 30 minutes, cannot drink water and beverages, the forearm is exposed, in the test state, keep relaxed; image acquisition is carried out on the test area, and skin a* value is analyzed; (5.5±0.1) mg / cm 2 Test sample is used on the test area, image acquisition is carried out on the test area 30 min after using the sample, and skin a* value is analyzed. Calculate the skin a* value change value, and take the average value of the calculation results of multiple subjects for each test sample.

[0076] 2. Skin hematin change value

[0077] Test instrument and principle: Skin color test probe (Delfin Skin Color Catch) was used to obtain quantitative hematin value based on the principle of light reflection. The decrease of hematin value indicates that the skin is soothed.

[0078] ​Test method: 66 volunteers with acne-prone skin were selected and evenly divided into 11 groups, each corresponding to any one of the examples or comparative examples. The test site could not use any samples (cosmetics or external drugs) for 3 days before the test, and could not contact water for 3 hours. Before the test, the subjects sat in a laboratory with a temperature of 20-22°C and a relative humidity of 40-60% for at least 10 minutes, could not drink water and beverages, the face was exposed, and was kept relaxed; the initial value of the skin hemoglobin of the test area was determined. The samples were distributed and the subjects were informed of the product usage instructions, and an appropriate amount of product was applied to the facial skin and gently massaged until absorbed. It can be used once a day in the morning and evening, and the skin hemoglobin of the test area is determined after using the sample for 14 days. Calculate the change value of skin hemoglobin, and take the average value of the calculation results of multiple subjects for each test sample.

[0079] 3. Change value of transepidermal water loss:

[0080] Test instrument and principle: A skin transepidermal water loss probe (Courage + Khazaka Tewameter TM300) was used to obtain the transepidermal water loss value based on the water vapor pressure gradient of different points per unit time and unit cross-sectional area according to Fick's diffusion law. The lower the value, the slower the skin water evaporation speed, and the skin barrier function is improved.

[0081] Test method: 66 volunteers with sensitive skin were selected and evenly divided into 11 groups, each corresponding to any one of the examples or comparative examples. The test site could not use any samples (cosmetics or external drugs) for 3 days before the test, and could not contact water for 3 hours. Before the test, the subjects needed to clean the right forearm inside uniformly, the cleaning method was to wipe clean with dry facial tissues; the subjects marked the test area on the right forearm inside, and the test area was 3*3 cm2; Before the test, the subjects sat in a laboratory with a temperature of 20-22°C and a relative humidity of 40-60% for at least 30 minutes, could not drink water and beverages, the forearm was exposed, and was placed in a test state, and was kept relaxed; The transepidermal water loss of the test area was determined; The samples were distributed and the subjects were informed of the product usage instructions, and an appropriate amount of product was applied to the right forearm skin and gently massaged until absorbed. It can be used once a day in the morning and evening, and the transepidermal water loss of the test area is determined after using the sample for 5 days. Calculate the change value of transepidermal water loss, and take the average value of the calculation results of multiple subjects for each test sample.

[0082] The final average results shown in Table 2 were obtained.

[0083] Table 2 Test results of examples and comparative examples

[0084]

[0085]

[0086] It can be concluded from the test results of Examples 1-4 that the skin care composition containing betaine and extract of Centella asiatica and extract of Kakadu plum can relieve skin inflammation, reduce discomfort such as redness and itching, thereby reducing the occurrence of acne, soothing the skin, and enhancing the skin barrier to help the skin return to a healthy state; and the addition of 1.5% betaine, 8% extract of Kakadu plum and 3% extract of Centella asiatica in the skin care composition can have better acne soothing effect, providing good help for the skin to return to a healthy state.

[0087] It can be concluded from the test results of Example 3 and Comparative Examples 1-7 that if any one or two of betaine, extract of Centella asiatica and extract of Kakadu plum is removed from the skin care composition, it will have a great influence on the acne soothing effect, indicating that the three components of betaine, extract of Centella asiatica and extract of Kakadu plum in the skin care composition have a synergistic effect.

[0088] The above describes the preferred embodiments of the present application, but the present application is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0089] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present application will not further describe various possible combinations.

[0090] In addition, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the technical concept of the present application, and it should be considered as disclosed by the present application.

Claims

1. A skincare composition containing Kakadu plum extract, characterized in that, Includes the following components by weight percentage: (A) Kakadu plum extract 2%-10%; (B) Centella asiatica extract 0.5%-5%; (C) Betaine 0.5%-5%; (D) Moisturizer 2%-10%; (E) Thickener 0.01%-0.5%; (F) Chelating agent 0.01%-0.5%; (G) Preservatives 0.5%-2%; (H) Solubilizer 0.1%-2%; (I) Fragrance 0.01%-0.1%; (J) Citric acid 0.001%-0.1%; (K) Sodium citrate 0.001%-0.1%; (L) Add pure water to bring the volume to 100%.

2. The skincare composition according to claim 1, characterized in that, The preparation method of the Kakadu plum extract includes the following steps: S1. Wash and dry the Kakadu plum, then pulverize it into ultrafine powder so that it can pass through a 100-mesh sieve. Add propylene glycol aqueous solution, mix well, and filter to obtain Kakadu plum filtrate. S2. Add a complex biological enzyme to the Kakadu plum filtrate for enzymatic hydrolysis, and obtain the enzymatic hydrolysate after enzyme inactivation; S3. Mix the enzymatic hydrolysate and the extraction solvent evenly, extract using ultrasonic extraction, filter to obtain the separation liquid, which is the Kakadu plum extract.

3. The skincare composition according to claim 2, characterized in that, In step S1, the drying temperature is 75-80℃, the propylene glycol solution is a 30 vol%-45 vol% aqueous solution of propylene glycol, and the mass ratio of Kakadu plum to the propylene glycol solution is (2.5-3):

1.

4. The skincare composition according to claim 2, characterized in that, In step S2, the composite bio-enzyme is cellulase, phospholipase, and transglycosidase; the weight ratio of cellulase, phospholipase, and transglycosidase is 2:(1-2):(1-2); the amount of the composite bio-enzyme added is 0.3%-3.0% of the weight of the Kakadu plum filtrate; in step S2, the enzymatic hydrolysis conditions include a pH of 5.5-6.5 and a temperature of 50-65℃. In step S2, the enzyme inactivation step includes: rapidly heating to 90℃-100℃ for 1 minute after enzymatic hydrolysis, and then cooling to 50-65℃.

5. The skincare composition according to claim 2, characterized in that, In step S3, the extraction solvent is an alcohol solution, and the amount of extraction solvent added is 80%-85% of the weight of the enzymatic hydrolysate. In step S3, the specific steps of ultrasonic extraction include: inputting the enzymatic hydrolysate into the extraction tube from the feed port of the ultrasonic extractor, and simultaneously inputting the extraction solvent into the extraction tube from the slag discharge end of the ultrasonic extractor after heating, and performing countercurrent ultrasonic extraction under normal pressure in the extraction tube.

6. The skincare composition according to claim 1, characterized in that, The moisturizer is one or more of glycerin, glycerin polyethers, allantoin, and hyaluronic acid.

7. The skincare composition according to claim 1, characterized in that, The thickener is one or more of starch, guar gum, gum arabic, xanthan gum, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl starch, sodium polyacrylate, and polyethylene glycol derivatives.

8. The skincare composition according to claim 1, characterized in that, The chelating agent is one or more of the following: sodium pyrophosphate, sodium metasilicate, ethylenediaminetetraacetic acid, disodium ethylenediaminetetraacetic acid, citric acid, citrate, chitosan, hydroxyethylethylenediaminetriacetic acid, dithiopropanol, sodium gluconate, and modified starch.

9. The skincare composition according to claim 1, characterized in that, The preservative is one or more of ketone, hexanediol, and sodium benzoate; the solubilizer is one or more of Tween-based solubilizers, hydrogenated castor oil-based solubilizers, and polyethylene glycol-based solubilizers.

10. A method for preparing a skincare composition according to any one of claims 1-9, characterized in that, Includes the following steps: ① Place the humectant, thickener and chelating agent into a beaker, add pure water at 85-90℃, homogenize until uniform and free of particles, and cool to room temperature while stirring to obtain material 1; ② Add the preservative to another beaker and heat until there are no particles. Then add it to material 1 and stir well to obtain material 2. ③ Dissolve betaine in an aqueous solution and add it to material 2 and stir well to obtain material 3; ④ Add Kakadu plum extract and Centella asiatica extract to material 3 and stir well to obtain material 4; ⑤ Mix the fragrance and solubilizer evenly, and add them to the mixture 4 and stir evenly to obtain the mixture 5; ⑥ Add citric acid and sodium citrate to material 5, adjust the pH to 5.5-6.5, and add pure water to 100% before discharging.

Images