Skin care mask and preparation method thereof

Abstract

The invention belongs to the technical field of skin care products, and particularly relates to a skin care mask and a preparation method thereof. The skin care mask is prepared from the following raw materials: glycerol, low-molecular sodium hyaluronate, high-molecular sodium hyaluronate, allantoin, nicotinamide, arbutin, tranexamic acid, glucose, squalane, tocopherol, carbomer, resveratrol, panthenol, 1, 3-butanediol, triethanolamine, citric acid, an emulsifier, a preservative and deionized water. The mask product is comprehensive in effect and has the functions of moisturizing, whitening and brightening, resisting oxidation and the like; the composition is mild and stable and adapts to sensitive skin; and the cream is light in texture, good in ductility, non-sticky in thick application and good in use feeling.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of skin care products, and particularly relates to a skin care mask and a preparation method thereof. BACKGROUND

[0002] In recent years, consumers have increasingly diverse demands for the efficacy of skin care products, not only requiring basic moisturization, but also pursuing multiple functions such as whitening, brightening, antioxidant repair, and the like. In particular, in the context of night skin care, products with multiple functions have become a market hotspot. However, traditional skin care products have many limitations: single efficacy ingredients are difficult to achieve multi-dimensional improvement, such as whitening ingredients that are often limited in effect due to single mechanism and are prone to cause skin irritation; when moisturizing and barrier repair ingredients are not reasonably matched, either the water retention capacity is insufficient, or the texture is thick, heavy and sticky, affecting the use experience. In addition, sensitive skin groups have strict requirements for product mildness, and ordinary skin care products often cause redness, itching and other discomfort due to deviation of the pH value from the weak acid environment of the skin or the presence of irritating preservatives and emulsifiers.

[0003] Therefore, developing a skin care product with multiple functions, suitable for sensitive skin and good use experience has become the key to solving the industry's pain points. SUMMARY

[0004] To solve the above technical problems, the present application provides a skin care mask and a preparation method thereof. The mask product has comprehensive functions, including moisturizing, whitening, brightening, and antioxidant functions; it is mild and stable, suitable for sensitive skin; it has a light cream texture, good extensibility, no stickiness when applied thickly, and good use experience.

[0005] To achieve the above-mentioned purposes, the technical solution adopted by the present application is as follows: A skin care mask is prepared from the following raw materials in mass percentage: glycerin 4%~6%, sodium hyaluronate 0.1%~0.2%, allantoin 0.1%~0.3%, nicotinamide 3%~4%, arbutin 1%~1.5%, tranexamic acid 1%~1.5%, glucose 1.5%~2%, squalane 2%~4%, tocopherol 0.5%~0.6%, carbomer 0.1%~0.3%, resveratrol 0.2%~0.4%, panthenol 1%~2%, 1,3-butanediol 2%~3%, triethanolamine 0.05%~0.1%, citric acid 0.01%~0.05%, emulsifier 2.5%~3.0%, preservative 1.6%~1.8%, and the balance is water, totaling 100%.

[0006] Further, the sodium hyaluronate is low molecular weight sodium hyaluronate and high molecular weight sodium hyaluronate, the molecular weight of the low molecular weight sodium hyaluronate is 200kDa~400kDa, and the molecular weight of the high molecular weight sodium hyaluronate is ≥1.8MDa.

[0007] Further, the mass ratio of the glycerin, low-molecular sodium hyaluronate and high-molecular sodium hyaluronate is 5:0.1:0.05.

[0008] Further, the mass ratio of the nicotinamide, tranexamic acid, tocopherol and arbutin is 3:1:0.5:1.

[0009] Further, the emulsifier is sucrose stearate and PEG-60 hydrogenated castor oil.

[0010] Further, the preservative is 1,2-hexanediol and potassium sorbate.

[0011] The skin care mask provided by the present application realizes the synergistic effect of multiple functions through scientific compounding. The moisturizing ingredients synergize: the moisturizing ingredients such as glycerin, sodium hyaluronate (low-molecular and high-molecular), glucose and panthenol cooperate with each other, the low-molecular sodium hyaluronate deeply moisturizes the dermis layer, the high-molecular sodium hyaluronate forms a film on the surface to lock water, glycerin absorbs water to maintain the feeling of moisture, glucose further enhances the moisturizing effect and promotes skin renewal, and panthenol assists in repairing the barrier to maintain moisture, thereby improving the moisturizing capacity together. The whitening ingredients synergize: nicotinamide blocks the transfer of melanin, arbutin inhibits the activity of tyrosinase, and tranexamic acid inhibits the generation of melanin, so that the three ingredients inhibit melanin from different aspects, and the whitening and spot-fading effects are synergistically exerted by optimizing the ratio of raw materials. The antioxidant ingredients synergize: tocopherol and resveratrol jointly act, the former prevents lipid peroxidation, the latter cooperates to scavenge free radicals, and allantoin relieves inflammation, thereby jointly enhancing the antioxidant and relieving capacities. The emulsification and thickening system synergizes: sucrose stearate as an emulsifier stabilizes the oil-water phase, PEG-60 hydrogenated castor oil assists in solubilization and improves the smoothness of texture, and the combination of carbomer makes the product form a stable, uniform and good-touch texture. The pH adjustment synergizes: triethanolamine neutralizes carbomer to form a three-dimensional network gel structure, and citric acid further adjusts the pH to the appropriate range, so that the product pH is stably in the weak acidic environment suitable for the skin, thereby ensuring the mildness and stability of the product and better meeting the needs of sensitive skin.

[0012] The present application further provides a preparation method of the skin care mask, which comprises the following steps: Carbomer is stirred in water until it is completely swollen, glycerin, sodium hyaluronate, allantoin and glucose are added, and stirring and dissolution are carried out at 70-75℃, then a solution of nicotinamide, tranexamic acid, arbutin and resveratrol is added in a light-proof environment with a temperature not exceeding 45℃, and the water phase matrix is obtained after uniform mixing; Squalane and tocopherol are heated to 70-75℃, an emulsifier is added, and uniform stirring is carried out to obtain the oil phase matrix; The water phase base and the oil phase base are mixed, then the ubiquinol and the preservative are added under the condition that the temperature is not more than 40 DEG C, and stirred uniformly, and then the pH of the system is adjusted to 5.5-6.0 by triethanolamine and citric acid in sequence, so that the multifunctional skin care mask is obtained.

[0013] Further, the resveratrol solution is prepared by dissolving resveratrol in 1,3-butanediol, and resveratrol is a fat-soluble component, which needs to be dissolved in 1,3-butanediol first and then added into the water phase to avoid precipitation.

[0014] Further, the specific process of adjusting the pH of the system by triethanolamine and citric acid is as follows: first, adjust to pH 6.0 by triethanolamine, form a gel structure through neutralization reaction, and then adjust to pH 5.5-6.0 by citric acid.

[0015] Compared with the prior art, the present application has the following beneficial effects: The skin care mask provided by the present application realizes multiple effects through the synergy of multiple components: 1) in terms of water replenishment and moisturization, low-molecular hyaluronic acid provides deep water replenishment, high-molecular hyaluronic acid locks water on the surface, glycerol absorbs water and maintains moisture, glucose promotes skin renewal, ubiquinol assists in repairing the barrier to maintain moisture, and a three-dimensional moisturizing network is formed; 2) in terms of whitening, niacinamide blocks the transfer of melanin, arbutin inhibits the activity of tyrosinase, and tranexamic acid reduces the generation of melanin, so that the skin is brightened through the synergy of the three pathways; and 3) in terms of antioxidant, tocopherol prevents lipid oxidation, resveratrol scavenges free radicals, and allantoin relieves inflammation, so that triple protection is achieved. In addition, the present application uses carbomer as a gel base, and the pH is precisely adjusted to weak acidity by triethanolamine and citric acid to adapt to the weak acidic environment of the skin. The mask product provided by the present application has a light cream texture, good extensibility, and does not feel sticky when applied thickly at night, which can significantly improve the user experience. Through scientific proportioning, the effects are superimposed, and the product is especially suitable for sensitive skin care. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 A is the expression amount of tyrosinase TYR, and B is the expression amount of transcription factor MITF.

[0018] Figure 2The melanin content in the cell supernatant, wherein a is the control group, b is the whitening composition dilution ratio 1:100 group, c is the whitening composition dilution ratio 1:1000 group, d is the mask product dilution ratio 1:100 group, and e is the mask product dilution ratio 1:1000 group.

[0019] Figure 3 The mask product antioxidant effect test diagram.

[0020] Figure 4 The zebrafish yolk sac fluorescence intensity diagram.

[0021] Figure 5 The relative expression amount of aqp3a gene. DETAILED DESCRIPTION

[0022] The specific embodiments of the present application are described in detail below, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments. Based on the examples in the present application, all other examples obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application. The experimental methods described in the embodiments of the present application are conventional methods, and the materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

[0023] Example 1 A skin care mask is made from the following mass percentage of raw materials: glycerol 5%, low molecular weight sodium hyaluronate 0.1%, high molecular weight sodium hyaluronate 0.05%, allantoin 0.2%, nicotinamide 3%, arbutin 1%, tranexamic acid 1%, glucose 2%, squalane 3%, tocopherol 0.5%, sucrose stearate 1.5%, PEG-60 hydrogenated castor oil 1%, carbomer 0.2%, resveratrol 0.3%, panthenol 2%, 1,2-hexanediol 1.5%, 1,3-butanediol 3%, potassium sorbate 0.1%, triethanolamine 0.1%, citric acid 0.05%, and the balance is deionized water, totaling 100%; wherein the molecular weight of the low molecular weight sodium hyaluronate is 200kDa-400kDa, and the molecular weight of the high molecular weight sodium hyaluronate is ≥1.8MDa.

[0024] A method for preparing a skin care mask is as follows: S1. Water phase preparation: disperse carbomer in cold deionized water and stir until completely swollen; then add glycerol, low / high molecular weight sodium hyaluronate, allantoin, and glucose in sequence, heat to 75°C, and stir to dissolve; in the dark, at a temperature not exceeding 45°C, add nicotinamide, tranexamic acid, and arbutin in sequence, and finally add resveratrol pre-dissolved in 1,3-butanediol to the system, stir uniformly, and obtain the water phase; S2. Oil phase preparation: heat squalane and tocopherol to 75℃, add sucrose stearate and PEG-60 hydrogenated castor oil, stir until uniform, to obtain the oil phase; S3. Emulsification and homogenization: slowly add the oil phase to the water phase, homogenize at 3000 rpm for 5 min to form a stable cream base, then add panthenol, 1,2-hexanediol and potassium sorbate, stir until uniform; S4. pH adjustment: first adjust the pH of the product obtained in step S3 to 6.0 with triethanolamine, then fine-tune to pH 5.5-6.0 with citric acid.

[0025] Example 2 A skin care mask is prepared from the following raw materials in mass percentage: glycerin 4%, low molecular weight sodium hyaluronate 0.15%, high molecular weight sodium hyaluronate 0.05%, allantoin 0.2%, nicotinamide 4%, arbutin 1.5%, tranexamic acid 1%, glucose 2%, squalane 3%, tocopherol 0.5%, sucrose stearate 1.5%, PEG-60 hydrogenated castor oil 1%, carbomer 0.2%, resveratrol 0.3%, panthenol 2%, 1,2-hexanediol 1.5%, 1,3-butanediol 3%, potassium sorbate 0.1%, triethanolamine 0.1%, citric acid 0.05%, and the balance is deionized water, totaling 100%; wherein the molecular weight of the low molecular weight sodium hyaluronate is 200-400 kDa, and the molecular weight of the high molecular weight sodium hyaluronate is ≥1.8 MDa.

[0026] A method for preparing a skin care mask, prepared according to the method described in Example 1.

[0027] Example 3 A skin care mask is prepared from the following raw materials in mass percentage: glycerin 6%, low molecular weight sodium hyaluronate 0.05%, high molecular weight sodium hyaluronate 0.05%, allantoin 0.2%, nicotinamide 3%, arbutin 1.5%, tranexamic acid 1%, glucose 2%, squalane 3%, tocopherol 0.6%, sucrose stearate 1.5%, PEG-60 hydrogenated castor oil 1%, carbomer 0.2%, resveratrol 0.3%, panthenol 2%, 1,2-hexanediol 1.5%, 1,3-butanediol 3%, potassium sorbate 0.1%, triethanolamine 0.1%, citric acid 0.05%, and the balance is deionized water, totaling 100%; wherein the molecular weight of the low molecular weight sodium hyaluronate is 200-400 kDa, and the molecular weight of the high molecular weight sodium hyaluronate is ≥1.8 MDa.

[0028] A method for preparing a skin care mask, prepared according to the method described in Example 1.

[0029] Example 4 A preparation method of a skin care mask, prepared according to the method described in Example 1, with the difference that in step S1, after adding glycerol, low / high molecular weight sodium hyaluronate, allantoin and glucose, heat to 70°C and stir to dissolve; in step S2, add emulsifier after heating squalane and tocopherol to 70°C.

[0030] Comparative Example 1 A skin care mask and a preparation method thereof, prepared according to the method described in Example 1, with the difference that the percentage content of glycerol is 10%, the percentage content of low molecular weight sodium hyaluronate is 0.2%, and the percentage content of high molecular weight sodium hyaluronate is 0.1%.

[0031] The product obtained in this comparative example has a sticky and not smooth appearance.

[0032] Comparative Example 2 A skin care mask and a preparation method thereof, prepared according to the method described in Example 1, with the difference that glycerol is 10%, low molecular weight sodium hyaluronate is 0.3%, and high molecular weight sodium hyaluronate is 0.1%.

[0033] The product obtained in this comparative example has an improved appearance compared to Comparative Example 1, and is much smoother to apply, but is still sticky to apply.

[0034] Test and analysis I. Cell model proves whitening and spot-fading efficacy The ingredients with whitening efficacy, nicotinamide, tranexamic acid, tocopherol and arbutin, are mixed together according to the formula proportion in Example 1 to obtain a composition. In melanocyte B16F10, the effect of the composition on inhibiting melanin production is detected. The composition is diluted with DMEM medium (high sugar, containing 10% fetal bovine serum) to different proportions (1:100, 1:1000, control group (Ctl) without adding the composition); a 12-well plate is laid, melanocyte B16F10 is added (cell confluence is 90%-95%), and is placed in a 37°C carbon dioxide incubator for 24h of static culture until the cell confluence is about 90%. The culture medium is replaced with the diluted composition solution, and the static culture is continued in a 37°C carbon dioxide incubator for 24h. After the culture is completed, the cell supernatant is collected, and then centrifuged at 1000 rpm for 5min. Melanin is deposited at the bottom of the centrifuge tube. The secretion of melanin in the cells and the expression of genes related to melanin synthesis are observed and detected, and the results are shown in Figure 1 , wherein, Figure 1 A is the expression amount of tyrosinase TYR, Figure 1 B is the expression amount of transcription factor MITF, and ***p<0.001 compared with the control group.

[0035] Figure 1The results show that the expression of tyrosinase TYR in the key pathway of melanin secretion decreases sharply with the increase of the concentration of whitening components (Figure A). When the volume concentration of whitening components is 1%, the expression of TYR in the cell is 36% of that of the control cell, and when the volume concentration of whitening components is 1‰, the expression of TYR in the cell is 69% of that of the control cell. In addition, MITF, another important transcription factor, is a key transcription factor for regulating melanin production, controlling the synthesis of tyrosinase and other enzymes, and thus affecting the synthesis and secretion of melanin. The expression of MITF is also severely inhibited (Figure B). When the volume concentration of whitening components is 1%, the expression of MITF in the cell is 21% of that of the control cell, and when the volume concentration of whitening components is 1‰, the expression of MITF in the cell is 52% of that of the control cell. The results of the cell show that the whitening components have a significant ability to inhibit the expression of genes related to melanin production and secretion.

[0036] Using the above method, the above composition with whitening effect and the mask finished product prepared in Example 1 were diluted into different proportions (1:100, 1:1000), and the control group (Ctl) was not added with the composition and the mask finished product. The melanocyte B16F10 was treated for 24h, the supernatant was collected, and the melanin content in the cell supernatant was observed after centrifugation, and the results are shown in Figure 2

[0037] Figure 2 Among them, a is the control group, b is the whitening composition dilution ratio 1:100 group, c is the whitening composition dilution ratio 1:1000 group, d is the mask finished product dilution ratio 1:100 group, and e is the mask finished product dilution ratio 1:1000 group. From Figure 2 It can be seen that the melanin secretion content in the composition with whitening effect and the mask finished product is less than that of the control group. The results show that the whitening components and the mask finished product have the effect of inhibiting melanin secretion.

[0038] II. Zebrafish model confirms antioxidant effect The antioxidant effect of the mask finished product prepared in Example 1 was tested.

[0039] Test system: albino zebrafish with melanin allele mutation. Zebrafish age: 2 days after fertilization (2dpf). Number of experimental samples in each group: 15 (n=10).

[0040] Experimental steps: 1. Randomly select zebrafish in a 6-well plate, 15 per well; 2. Water-soluble administration of samples, while setting up normal control group and model control group (control group is given water), and the volume of each well is 3mL; ​3. Except for the normal control group, the rest of the experimental groups were given water-soluble menadione to establish zebrafish oxidative stress model; 4. Incubate at 28℃ in the dark for 22h; 5. Zebrafish were stained with specific ROS fluorescent reagent, after staining, 10 zebrafish from each experimental group were randomly selected and placed under a fluorescence microscope for photography, and the data were analyzed and collected using advanced image processing software, the fluorescence intensity (S) of zebrafish yolk sac was analyzed, and whether the sample had antioxidant effect was calculated and judged according to the formula, the calculation formula was as follows: Antioxidant effect (%) = (S 模型对照组 -S 样品组 ) / (S 模型对照组 -S 正常对照组 ) x 100%; The results are shown in Table 1, Figure 3 , Figure 4 , compared with the model control group ***p<0.001.

[0041] Table 1. Results of antioxidant effect detection experiment of samples (n=10) The detection concentration of 0.1% refers to the dilution of 10 times of the finished mask product (recorded as finished product 0.1%), and the antioxidant effect is detected.

[0042] Figure 3 The middle yellow dashed line part is the quantitative area, the brighter the fluorescence brightness in the figure, the stronger the oxidative stress ability produced in the zebrafish body. In this experiment, zebrafish treated with menadione were used as the model control group, which could obviously induce strong oxidative stress reaction in the zebrafish body. According to the fluorescence brightness, the finished mask product prepared in Example 1 showed significant antioxidant capacity compared with the model control group.

[0043] Figure 4 The fluorescence intensity of the normal control group was 1319214, the fluorescence intensity of the model control group was 2964518, and the fluorescence intensity of the finished mask product was 2327146. The antioxidant effect in Table 1 refers to the results compared with the model control group, which is a method widely recognized in the industry. The antioxidant effect of 39% is calculated according to the above formula. It is analyzed that there is significant difference.

[0044] Table 1, Figure 3 , Figure 4 The experimental results show that the fluorescence intensity of zebrafish yolk sac of the finished mask product obtained in Example 1 is significantly reduced compared with the model control group, which reveals that the sample has antioxidant effect.

[0045] III. Zebrafish model confirms the moisturizing effect The prepared facial mask product of Example 1 was subjected to moisturizing efficacy test.

[0046] Test system: albino zebrafish with melanin allele mutation. Zebrafish age: 2 days post fertilization (2dpf). Sample size of each experimental group: 30 (n=3).

[0047] Experimental procedure: 1. Randomly select zebrafish in a 6-well plate, 30 per well; 2. Water-soluble administration of samples, while setting up normal control group and model control group (control group was given water), each well capacity was 3mL; 3. Except for the normal control group, the rest of the experimental groups were water-soluble administration of sodium chloride to establish zebrafish skin dehydration model.

[0048] 4. Incubate at 28℃ in the dark for 22h; 5. Extract total RNA from each experimental group of zebrafish, synthesize cDNA, and use q-PCR to detect the gene expression of β-actin and target gene.

[0049] 6. Use β-actin as the internal reference for gene expression, calculate the RNA relative expression of the target gene, and the calculation formula is as follows: RNA relative expression = 2 ∆∆Ct ; ∆∆Ct = ∆Ct 模型对照组 - ∆Ct 样品组 ; ∆Ct = Ct 目的基因 - Ct β-actin ; The experimental results are shown in Table 2, Figure 5 , compared with the model control group, * p<0.05, ***p<0.001.

[0050] Table 2 Experimental results of sample moisturizing efficacy detection (n=3) 0.25% detection concentration refers to the detection of moisturizing efficacy after diluting the facial mask product by 25 times (recorded as product 0.25%). Since the zebrafish eggs are small, in this experiment, 30 eggs in each group were taken together to extract RNA as one sample, repeated in 3 wells, so n=3, and the detection results are shown in Table 2, Figure 5 . The detection results take the model control group as the control group, set to 1, after diluting the facial mask product by 25 times, the relative expression of aqp3a gene in the skin of zebrafish in the facial mask product group is 2.11 times that of the control group, while the expression of aqp3a gene in the normal control group is 3.23 times that of the model control group. The results show that the facial mask product can relieve the shrinkage caused by sodium chloride and has good water-locking efficacy.

[0051] Table 2, Figure 5 The experimental results show that the relative expression of aqp3a gene of the finished mask product of Example 1 is significantly up-regulated compared with the model control group, revealing that the mask has good water and moisture retention effect.

[0052] Although preferred embodiments of the application have been described, those skilled in the art will be able to make additional changes and modifications to these embodiments once they have been given the inventive concept of the present application, and these changes and modifications all fall within the scope of the present application.

[0053] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. If these modifications and variations of the present application fall within the scope of the equivalent technology of the present application, the present application also intends to include these modifications and variations.

Claims

1. A skin care mask, characterized in that: It is made from the following raw materials in percentage by weight: glycerin 4%~6%, sodium hyaluronate 0.1%~0.2%, allantoin 0.1%~0.3%, niacinamide 3%~4%, arbutin 1%~1.5%, tranexamic acid 1%~1.5%, glucose 1.5%~2%, squalane 2%~4%, tocopherol 0.5%~0.6%, carbomer 0.1%~0.3%, resveratrol 0.2%~0.4%, panthenol 1%~2%, 1,3-butylene glycol 2%~3%, triethanolamine 0.05%~0.1%, citric acid 0.01%~0.05%, emulsifier 2.5%~3.0%, preservative 1.6%~1.8%, and the balance is water, totaling 100%.

2. The skin care mask according to claim 1, characterized in that The sodium hyaluronate is low-molecular sodium hyaluronate and high-molecular sodium hyaluronate. The molecular weight of the low-molecular sodium hyaluronate is 200kDa~400kDa, and the molecular weight of the high-molecular sodium hyaluronate is ≥1.8MDa.

3. The skin care mask according to claim 2, characterized in that The mass ratio of the glycerol, low-molecular sodium hyaluronate and high-molecular sodium hyaluronate is 5:0.1:0.

05.

4. The skin care mask according to claim 1, characterized in that The mass ratio of the nicotinamide, tranexamic acid, tocopherol and arbutin is 3:1:0.5:

1.

5. The skin care mask according to claim 1, characterized in that The emulsifiers are sucrose stearate and PEG-60 hydrogenated castor oil.

6. The skin care mask according to claim 1, characterized in that The preservatives are 1,2-hexanediol and potassium sorbate.

7. The method for preparing the skin care mask according to any one of claims 1 to 6, characterized in that: The following steps are involved: Stir carbomer in water until completely swollen, add glycerol, sodium hyaluronate, allantoin, and glucose, and stir to dissolve at 70-75°C. Then, add niacinamide, tranexamic acid, arbutin, and resveratrol solution in a dark environment at a temperature not exceeding 45°C, and mix thoroughly to obtain an aqueous matrix. Heat squalane and tocopherol to 70-75°C, add emulsifier, and stir evenly to obtain an oil phase matrix; After mixing the aqueous phase matrix and the oil phase matrix, add panthenol and preservatives at a temperature not exceeding 40°C, stir evenly, and adjust the pH of the system to 5.5~6.0 with triethanolamine and citric acid in sequence to obtain a multifunctional skin care mask.

8. The method for preparing the skin care mask according to claim 7, wherein: The resveratrol solution is prepared by dissolving resveratrol in 1,3-butanediol.

9. The method for preparing a skin care mask according to claim 7, wherein: The specific process of adjusting the pH of the system with triethanolamine and citric acid is: first adjust the pH to 6.0 with triethanolamine, and then adjust the pH to 5.5~6.0 with citric acid.

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