An anti-photoaging skincare composition, its preparation method and application

Abstract

This invention discloses an anti-photoaging skincare composition, its preparation method, and its application. The composition of this invention is a compound of sodium hyaluronate-ferulic acid grafted material and one or two of the following: Viola yedoensis flower extract and Calendula officinalis flower extract. Experimental verification shows that the anti-photoaging composition of this invention and products containing the anti-photoaging composition can achieve anti-aging effects by promoting the production of elastic fibers and Collagen IV. It can be used in cosmetics to improve skin aging problems caused by photoaging and has good application prospects in anti-photoaging cosmetics.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, specifically to an anti-photoaging skincare composition, its preparation method, and its application. Background Technology

[0002] Aging, also known as degeneration, is the process by which an organism gradually loses and deteriorates its constituent substances, tissue structure, and physiological functions over time or with increasing age, eventually leading to death. It is a complex and irreversible natural phenomenon. Skin aging is a direct manifestation of bodily aging, mainly characterized by increased wrinkles, dry and atrophic skin, and loss of elasticity. Influenced by endogenous aging processes and external environmental factors such as ultraviolet radiation and environmental pollution, the skin gradually ages over time, severely impacting people's quality of life.

[0003] Ultraviolet (UV) radiation is divided into three bands. Short-wave UVC is absorbed by the atmosphere and cannot reach the ground, while some medium-wave UVB and almost all long-wave UVA can penetrate the atmosphere and reach the ground. UVB has higher energy but weaker penetrating power, primarily damaging epidermal cells, disrupting the skin barrier, suppressing immune function, and causing erythema and pigmentation. UVA has lower energy but stronger penetrating power, reaching the dermis and damaging collagen, elastin fibers, and proteoglycans in the dermal layer. Photoaging of the skin is the result of the combined effects of UVB and UVA. Photoaging is mainly manifested as skin laxity, roughness, deepening and thickening of wrinkles, irregular pigmentation, vasodilation, epidermal keratinization, and abnormal proliferation in exposed areas. From a microscopic tissue structure and biological indicator analysis, the content of collagen, collagen fibers, and elastin fibers significantly decreases after UV irradiation. Collagen IV is the main protein at the dermal-epidermal junction (DEJ region); a decrease in Collagen IV content reduces the related functions of the dermis, leading to wrinkles. Elastic fibers are composed of microfibrils and elastin. They are elastic but lack resilience. Elastic fibers cross-link with collagen fibers to maintain the skin's elasticity and resilience. Therefore, promoting the synthesis of Collagen IV and elastic fibers can achieve anti-photoaging and thus anti-aging effects.

[0004] To combat photoaging of the skin, we need not only to find and develop more effective ingredients, but also to study how to apply these effective ingredients to cosmetics to truly improve the skin health of the general public. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-photoaging skincare composition, its preparation method, and its application. The composition of this invention is a compound of sodium hyaluronate-ferulic acid grafted material and one or two of the following: Viola yedoensis flower extract and Calendula officinalis flower extract. Experimental verification has shown that it has good anti-photoaging effects and can be used in cosmetics to improve skin aging problems caused by photoaging, demonstrating promising application prospects in anti-photoaging cosmetics.

[0006] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution: an anti-photoaging skin care composition comprising the following components in parts by weight: 0.1-1.5 parts of sodium hyaluronate-ferulic acid graft, and simultaneously comprising one or both of the following two extracts: 1.0-15.0 parts of Viola mandshurica flower extract and 1.0-15.0 parts of Calendula officinalis flower extract.

[0007] Preferably, the components and their mass parts of the composition are: 0.3-1.0 parts of sodium hyaluronate-ferulic acid graft, 5.0-10.0 parts of Viola mandshurica flower extract, and 5.0-10.0 parts of Calendula officinalis flower extract.

[0008] Preparation method: Sodium hyaluronate-ferulic acid graft, Viola mandshurica flower extract, and Calendula officinalis flower extract are mixed together and dissolved in purified water (to make up to 100 parts).

[0009] The preparation method of the sodium hyaluronate-ferulic acid graft is as follows: Sodium hyaluronate and ferulic acid are added to water, then vitamin C is added and activated under nitrogen protection. Then hydrogen peroxide is added and reacted under nitrogen. After the reaction is completed, the supernatant is collected by centrifugation. The supernatant is dialyzed through a dialysis membrane and freeze-dried at low temperature to obtain the preferred product. Sodium hyaluronate (average molecular weight of 9KD) is dissolved in water (10mg / ml). Ferulic acid and vitamin C are added according to the weight ratio of sodium hyaluronate 1:1 and 5:1, respectively. Nitrogen gas is turned on and activated under nitrogen protection for 30min. 5mol / L hydrogen peroxide is added according to the above 2% volume ratio. The reaction is stirred under nitrogen at room temperature for 12h. Dialysis is performed in a 3500D dialysis bag for 48h. The product is freeze-dried to obtain a white flocculent powder.

[0010] The Viola mandshurica flower extract can be obtained commercially. The preferred method is to obtain it by ultrasonic extraction of Viola mandshurica flowers with glycerol at a temperature of 25-45℃. The concentration of the Viola mandshurica flower extract is 0.17-0.25 g / mL, based on the amount of crude drug (the amount of Viola mandshurica flower powder used).

[0011] The calendula flower extract can be obtained commercially. A preferred method is as follows: Calendula petals are decocted in water at 70-90℃, the extract is concentrated under vacuum, and then 1.0-1.2 times the mass of glycerol is added to the calendula petal concentrate. The mixture is stirred evenly, filtered, and the calendula flower extract is obtained. The concentration of the calendula flower extract, based on the amount of crude drug (the amount of raw calendula petal powder), is 0.18-0.30 g / mL.

[0012] A second aspect of this invention provides the application of the above-described composition in the preparation of anti-photoaging skincare cosmetics. Through experimental verification, this invention demonstrates that the above-described composition can effectively combat photoaging by promoting the synthesis of Collagen IV and elastic fibers, while remaining safe and free of toxic side effects. Therefore, it can be applied to anti-photoaging skincare cosmetics.

[0013] A third aspect of the present invention provides a cosmetic for anti-photoaging skin care, the cosmetic comprising an anti-photoaging skin care composition.

[0014] Furthermore, based on the total mass of the anti-photoaging skincare cosmetic, the amount of the anti-photoaging skincare composition added is 0.5-30%, preferably 2-30%.

[0015] The aforementioned anti-photoaging skincare cosmetics may also contain any other raw materials permitted to be added in the cosmetics field, including but not limited to emulsifiers, emollients, moisturizers, and thickeners.

[0016] The anti-photoaging skincare cosmetic comprises the following components, based on the total mass of the anti-photoaging skincare cosmetic: 0.5-30% anti-photoaging skincare composition, 1-6% emulsifier, 6-30% emollient, 2-15% moisturizer, 0.02-1.0% thickener, and the balance being water and other excipients (preservatives, pH adjusters, etc.).

[0017] Preferably, the anti-photoaging skincare cosmetic comprises the following components, based on the total mass of the anti-photoaging skincare cosmetic: 2-30% anti-photoaging skincare composition, 2-5% emulsifier, 10-25% emollient, 5-12% moisturizer, and 0.05-0.8% thickener.

[0018] Preferably, the emulsifier comprises any one or a combination of two or more of the following: PEG-100 stearate, glyceryl stearate, polyglycerol-6 stearate, polyglycerol-6 behenate, polyglycerol-6 distearate, polyglycerol-3 beeswax ester, C14-22 alcohol, C12-20 alkyl glucoside, cetearyl oleate, sorbitan oleate, hydrogenated lecithin, cetyl alcohol, stearyl alcohol, glyceryl stearate derivatives, jojoba esters, sunflower seed wax, sodium stearoyl glutamate, polyglycerol-3, polyglycerol-10 laurate, and sodium di(lauramide-glutamine)lysine.

[0019] Preferably, the emollient comprises any one or a combination of two or more of the following: cetearyl alcohol, isononyl isononanoate, squalane, caprylic / capric triglyceride, beeswax, mineral oil, burdock seed oil, meadowfoam seed oil, polydimethylsiloxane, cyclopentamethoxysiloxane, isododecane, jojoba seed oil, triglyceride (ethylhexanoate), behenol, shea butter, pentaerythritol tetraisostearate, dioctyl carbonate, and tocopheryl acetate.

[0020] Preferably, the moisturizer includes any one or a combination of two or more of the following: glycerin, butylene glycol, dipropylene glycol, 1,3-propanediol, 1,2-hexanediol, ethylhexylglycerin, betaine, sodium hyaluronate, panthenol, and trehalose.

[0021] Preferably, the thickener comprises any one or a combination of two or more of sodium polyacrylate, sodium polyacrylate-grafted starch, carbomer, xanthan gum, hydroxyethyl cellulose, polyacrylate crosspolymer-6, ammonium acryloyldimethyl taurate / VP copolymer, and hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer.

[0022] Preferably, the preservative includes any one or a combination of two or more of p-hydroxyacetophenone, octanoyl hydroxamic acid, and phenoxyethanol.

[0023] Preferably, the pH adjuster includes any one of tromethamine, triethanolamine, and arginine.

[0024] Furthermore, by rationally adding the above-mentioned raw material components, this invention can also prepare different cosmetic formulations, such as essence water, essence lotion, essence cream, etc. In addition, based on the above-mentioned basic cosmetic categories, further derivative cosmetic categories can be obtained, which obviously all fall within the protection scope of this application.

[0025] A fourth aspect of the present invention provides a method for preparing the above-mentioned anti-photoaging skin care cosmetic, characterized in that the anti-photoaging skin care composition and other raw material components are mixed.

[0026] The beneficial technical effects of this invention are:

[0027] 1. Experiments have shown that the anti-photoaging composition of the present invention and products containing the anti-photoaging composition can achieve anti-aging effects by promoting the generation of elastic fibers and Collagen IV, and have significant effects when used in skin care products.

[0028] 2. The preparation method of the anti-photoaging skin care cosmetic of the present invention is simple and easy to implement, the raw materials are easy to obtain, and it is suitable for mass production, thus having good practical application value. Detailed Implementation

[0029] The present invention will be further illustrated below by way of embodiments, but these embodiments are not intended to limit the invention to their scope. Based on the embodiments of the present invention, any modifications to the invention by those skilled in the art without inventive step are within the scope of protection of the present invention. Furthermore, in the embodiments of the present invention, unless otherwise specified, all raw materials used in the preparation are commercially available products well known to those skilled in the art.

[0030] Examples 1-5:

[0031] An anti-photoaging skincare composition comprising sodium hyaluronate-ferulic acid graft, Viola mandshurica flower extract, and Calendula officinalis flower extract.

[0032] Preparation methods for Examples 1-5 and Comparative Examples 1-4: Sodium hyaluronate-ferulic acid graft, Viola mandshurica flower extract, and Calendula officinalis flower extract (according to the components and amounts in Table 1) were mixed together and dissolved in purified water. The specific schemes are shown in Table 1 below, calculated by mass ratio.

[0033] Table 1: List of ingredients (mass ratio) for specific embodiments and comparative examples

[0034]

[0035] The preparation method of sodium hyaluronate-ferulic acid graft is as follows: Sodium hyaluronate (average molecular weight (measured by Ubbelohde viscometer method) is 9KD) is dissolved in water (10mg / ml) in a stoppered conical flask. Ferulic acid and vitamin C are added in weight ratios of 1:1 and 5:1 with sodium hyaluronate, respectively. Nitrogen gas is introduced and activated under nitrogen protection for 30min. 5mol / L hydrogen peroxide is added in a volume ratio of 2% as described above. The reaction is stirred under nitrogen gas at room temperature for 12h. Dialysis is performed in a 3500D dialysis bag for 48h. The product is then freeze-dried to obtain a white flocculent powder.

[0036] The preparation method of Viola northeasternis flower extract is as follows:

[0037] (1) Take dried Viola yedoensis flowers, remove impurities, crush them, and set aside;

[0038] (2) Place the crushed Viola yedoensis flowers in an ultrasonic extractor, add glycerin and soak for 1-2 hours, ultrasonically treat at 35℃ for 30 minutes, filter after extraction, let the filtrate stand at 4℃ for 24 hours, and centrifuge by plate to obtain Viola yedoensis flower extract. The concentration of Viola yedoensis flower extract is 0.18 g / mL based on the amount of crude drug (the amount of raw Viola yedoensis flower powder).

[0039] The method for obtaining calendula flower extract is as follows:

[0040] (1) Take dried marigold petals, remove impurities, crush them, and pass them through a 100-mesh sieve for later use;

[0041] (2) Add 13 times the weight of deionized water to the crushed calendula petals, reflux and decoct at 80°C under normal pressure for no less than twice, each reflux decoction time for no less than 60 min. After extraction, filter and combine the extracts, concentrate the extract under vacuum, add 1.1 times the weight of glycerol to the calendula petal concentrate, stir evenly, filter, and obtain calendula flower extract. The concentration of calendula flower extract is 0.25 g / mL based on the amount of crude drug (the amount of raw calendula petal powder).

[0042] Example 6: Essence Water

[0043] The above-mentioned anti-photoaging skincare composition is used to prepare an essence water product containing the anti-photoaging composition, and the formula is shown in Table 2.

[0044] Table 2: Formula of Essence Water Products

[0045]

[0046] Preparation method of essence water:

[0047] S1: Aqueous phase preparation: Add the raw materials from phase A separately, heat to 85℃ and stir to dissolve;

[0048] S2: Oil phase preparation: Heat the B phase raw material to 80℃ to melt;

[0049] S3: Combine phase A and phase B, turn on the homogenizer (3000 rpm), and homogenize for 12 min;

[0050] S4: When the temperature drops to 45℃, add phase C and phase D components in sequence, stir to dissolve and disperse evenly, and the essence water product is obtained.

[0051] The preparation method of Comparative Example 5 is the same as that of Example 6, except that Comparative Example 5 does not contain the anti-photoaging skin care composition, and the amount of anti-photoaging composition used in Example 6 is made up by adding water.

[0052] Example 7: Essence Lotion

[0053] The above-mentioned anti-photoaging skincare composition is used to prepare an essence product containing the anti-photoaging skincare composition, and the formula is shown in Table 3.

[0054] Table 3: Formulas of Essence Lotions

[0055]

[0056] Preparation method of essence lotion:

[0057] S1: Preparation of the aqueous phase: Add the raw materials from phase A separately, heat to 85℃ and stir to dissolve;

[0058] S2: Preparation of the oil phase: Add the raw materials from phase B separately and heat to 80℃ to melt;

[0059] S3: Combine phase A and phase B, turn on the homogenizer (3000 rpm), and homogenize for 12 min;

[0060] S4: After homogenization, add phase C, stir well, and start cooling;

[0061] S5: When the temperature drops to 70℃, add phase D, stir to dissolve, and continue to cool down after dissolution is complete;

[0062] S6: When the temperature drops to 45℃, add phase E, stir to dissolve and disperse evenly to obtain the essence lotion product.

[0063] Example 8: Essence Cream

[0064] The above-mentioned anti-photoaging skincare composition is used to prepare an essence cream product containing the anti-photoaging skincare composition, and the formula is shown in Table 4.

[0065] Table 4: Formula of Essence Cream Products

[0066]

[0067] Preparation method of essence cream:

[0068] S1: Preparation of the aqueous phase: Add the raw materials from phase A separately, heat to 85℃ and stir to dissolve;

[0069] S2: Preparation of the oil phase: Add the raw materials from phase B separately and heat to 80℃ to melt;

[0070] S3: Combine phase A and phase B, start homogenization (3000 r / min), and homogenize for 12 min;

[0071] S4: After homogenization is complete, start cooling. When the temperature drops to 70℃, add phase C, stir to dissolve, and continue cooling after dissolution is complete.

[0072] S5: When the temperature drops to 45℃, add phase D components, stir to dissolve and disperse evenly to obtain the essence cream product.

[0073] Experiment 1: Safety Testing Experiment

[0074] In accordance with SN / T 2329-2009 "Eye Irritation of Cosmetics / Chicken Embryo Villi Allantoic Membrane Test", the product was subjected to an eye irritation test, which is also known as a safety test.

[0075] Experimental method: Fertilized chicken embryos under 7 days old were incubated for 9 days in an incubator at 37.6±0.5℃ and 50%~70% humidity.

[0076] CAM preparation: Candling is performed to check the egg. The location of the air cell is marked on the eggshell surface. The marked portion of the eggshell is peeled off with tweezers to expose the white egg membrane. Care should be taken not to damage the integrity of the egg membrane. 0.5 mL of 0.9% NaCl solution is added to fully moisten the egg membrane. The surface liquid is gently absorbed with a paper towel, and the inner membrane is carefully removed with tweezers, ensuring that the vascular membrane is not damaged.

[0077] Reaction endpoint method: Take 0.3 mL of transparent test substance and add it evenly or apply it to the CAM surface. After 3 min of action, wash off the test substance with 0.9% NaCl solution and observe the degree of change of each toxic effect of CAM.

[0078] Endpoint score (ES): For tests using the reaction endpoint method, an endpoint score (ES) should be calculated, with the result rounded to two decimal places. The score per chicken embryo = the sum of observed hemorrhage, coagulation, and vascularization in each embryo; ES = the mathematical sum of the scores of all six embryos. Based on the ES values, classify the eye irritation of the test substance according to Table 5.

[0079] Table 5: Criteria for Judging Results of Reaction Endpoint Method

[0080] Irritant Classification Non-irritating / mildly irritating moderate irritation Strongly irritating / corrosive

[0081] The test results are shown in Table 6. The chicken embryo chorioallantoic membrane test of the anti-photoaging skin care compositions in Examples 1-5 showed no irritation, indicating that the combination of sodium hyaluronate-ferulic acid graft with one or two of the extracts of Viola yedoensis and Calendula officinalis is safe and has no toxic side effects.

[0082] Table 6 Statistical Table of Stimulation Test Results

[0083]

[0084] Experimental Example 2: In vitro detection of elastic fiber and Collagen IV content

[0085] This test is based on an in vitro model of UVR-stimulated ex vivo skin tissue. Victoria blue staining and immunohistochemistry were used to detect changes in elastic fiber and Collagen IV content to evaluate the anti-photoaging ability of the test substance. The specific test protocol is shown in Table 7.

[0086] Tissue processing: Freshly obtained skin tissue (from Guangdong Boxi Biotechnology Co., Ltd.) was immersed in 75% alcohol for 30 seconds, and then washed three times with sterile PBS buffer. After that, the skin tissue was cut into small round slices with a diameter of 0.6 cm using a disposable sterile skin sampler, with the epidermis side up and the dermis side down. The slices were placed in a culture mold, and then the culture mold was transferred into a 6-well plate. 3.7 mL of culture medium (FSK4, Boxi Biotechnology) was added to each well, and the plate was incubated at 37°C in a 5% CO2 incubator. The medium was changed daily.

[0087] Administration: Two days after ex vivo skin tissue culture, UVR irradiation and drug administration were initiated according to the experimental groups and corresponding treatment conditions in Table 7; the UVR irradiation dose was UVA (30 J / cm²). 2 ) and UVB (50mJ / cm 2 (UVA irradiation is performed first, followed by UVB irradiation. The irradiation time is calculated using the following formula: Irradiation time (s) = Irradiation dose (J / cm²)) 2 ) / Irradiation intensity (W / cm) 2 The irradiation intensity was measured using an intensity dosimeter. In this experiment, UVA irradiation lasted 29 minutes, followed by UVB irradiation for 21 seconds, for four consecutive days. After each irradiation, the culture medium was replaced with fresh medium, and drug administration was performed. Positive controls (VC+VE) were administered submersibly, while test samples were administered topically. After four days of continuous irradiation, the excised skin tissue was cultured for another three days. During this period, no UVR stimulation was applied; only sample drug administration was performed.

[0088] Elastic fiber detection: After drug administration, skin tissue was fixed in 4% paraformaldehyde, embedded, sectioned, stained with Victoria blue, and the sections were recovered and photographed under a microscope. The image processing software Plus was used for analysis.

[0089] Immunohistochemical detection: The model used for detection was circumcised and fixed with 4% paraformaldehyde. After 24 hours of fixation, the content of Collagen IV was detected by immunohistochemistry. The images were taken and analyzed under a microscope.

[0090] Table 7 Test Plan

[0091]

[0092]

[0093] The test results are shown in Tables 8 and 9.

[0094] Table 8 Summary of Elastic Fiber Content Test Results

[0095] BC 1.00 0.10 / / NC 0.59 0.04 <![CDATA[0.0028 ## ]]> / PC 1.33 0.09 <![CDATA[0.0002 ** ]]> / Example 1 0.73 0.05 0.0177* 23.73％ Example 2 0.95 0.07 0.0015** 61.02％ Example 3 0.90 0.1 0.0081** 52.54％ Example 4 0.78 0.06 0.0096** 32.20％ Example 5 0.80 0.05 0.0053** 35.59％ Comparative Example 1 0.65 0.01 0.0453* 10.17％ Comparative Example 2 0.61 0.02 0.4818 / Comparative Example 3 0.59 0.03 1.000 / Comparative Example 4 0.60 0.02 0.7183 / Example 6 0.92 0.09 0.0044** 55.93％ Comparative Example 5 0.63 0.02 0.1963 /

[0096] (Note: ## indicates p < 0.01 compared to the blank control; ** indicates p < 0.01 compared to the negative control; * indicates 0.01 < p < 0.05 compared to the negative control)

[0097] As shown in Table 8, compared with group BC, the elastic fiber content in group NC decreased significantly, indicating that the stimulation conditions in this test were effective. Compared with group NC, the elastic fiber content in group PC increased significantly, indicating that the positive control in this test was effective. Compared with group NC, the elastic fiber content in Examples 1-6 and Comparative Example 1 increased significantly, while the elastic fiber content in Comparative Examples 2-5 showed no significant change. Comparing Examples 1-5 with Comparative Examples 1-4, it is shown that the sodium hyaluronate-ferulic acid graft compound can significantly promote the generation of elastic fibers, and the sodium hyaluronate-ferulic acid graft compound has a synergistic effect with one or both of the extracts of Viola yedoensis and Calendula officinalis, while one or both of the extracts of Viola yedoensis and Calendula officinalis alone do not have the effect of promoting the generation of elastic fibers. Comparing Example 6 with Comparative Example 5, it is shown that cosmetics containing this anti-photoaging composition have a significant effect of promoting the generation of elastic fibers. The anti-photoaging composition and cosmetics containing the anti-photoaging composition can achieve effective anti-photoaging effects by promoting the synthesis of elastic fibers.

[0098] Table 9 Summary of Average Optical Density Values ​​of Collagen IV

[0099]

[0100] (Note: ## indicates p < 0.01 compared to the blank control; ** indicates p < 0.01 compared to the negative control; * indicates p < 0.01 compared to the negative control.) <p<0.05。)

[0101] As shown in Table 9, compared with the BC group, the Collagen IV in the NC group decreased significantly, indicating that the stimulation conditions in this test were effective. Compared with the NC group, the Collagen IV in the PC group increased significantly, indicating that the positive control in this test was effective. Compared with the NC group, the Collagen IV in Examples 1-6 and Comparative Example 1 increased significantly, while the Collagen IV in Comparative Examples 2-5 showed no significant change. Comparing Examples 1-5 with Comparative Examples 1-4 shows that the sodium hyaluronate-ferulic acid graft compound can significantly promote the production of Collagen IV, and that the sodium hyaluronate-ferulic acid graft compound has a synergistic effect with one or both of the extracts of Viola yedoensis and Calendula officinalis, while one or both of the extracts of Viola yedoensis and Calendula officinalis alone do not have the effect of promoting Collagen IV production. Comparing Example 6 with Comparative Example 5 shows that cosmetics containing this anti-photoaging composition have a significant effect of promoting Collagen IV production. The anti-photoaging composition and cosmetics containing the anti-photoaging composition can achieve effective anti-photoaging effects by promoting Collagen IV production.

[0102] The above results indicate that this anti-photoaging composition and products containing it can achieve anti-aging effects by promoting the production of elastic fibers and Collagen IV, and have significant effects when used in skin care products.

[0103] It should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the given examples, those skilled in the art can modify or make equivalent substitutions to the technical solutions of the present invention as needed, without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An anti-photoaging skin care composition characterized in that, Its active ingredients and their mass fractions are: 0.1-1.5 parts of sodium hyaluronate-ferulic acid graft, and also contain one or both of the following two extracts: 1.0-15.0 parts of Viola yedoensis flower extract and 1.0-15.0 parts of Calendula officinalis flower extract. The extract of Viola yedoensis flower is obtained by ultrasonic extraction of Viola yedoensis flower with glycerol at a temperature of 25-45℃, and the concentration of Viola yedoensis flower extract is 0.17-0.25 g / mL based on crude drug. The calendula flower extract is obtained by decocting calendula petals in water at 70-90℃, concentrating the extract under vacuum, adding 1.0-1.2 times the mass of glycerol to the calendula petal concentrate, stirring evenly, and filtering. The concentration of the calendula flower extract, calculated as crude drug, is 0.18-0.30 g / mL. The preparation method of the sodium hyaluronate-ferulic acid graft is as follows: sodium hyaluronate and ferulic acid are added to water, vitamin C is added and activated under nitrogen protection, hydrogen peroxide is added and reacted under nitrogen. After the reaction is completed, the supernatant is collected by centrifugation, the supernatant is dialyzed through a membrane, and then freeze-dried at low temperature to obtain the product.

2. The anti-photoaging skincare composition as described in claim 1, characterized in that, Its active ingredients and their weight percentages are as follows: 0.3-1.0 parts of sodium hyaluronate-ferulic acid graft, 5.0-10.0 parts of Viola mandshurica flower extract, and 5.0-10.0 parts of Calendula officinalis flower extract.

3. A photoprotective skin care composition according to claim 1 or 2, wherein The preparation method of the sodium hyaluronate-ferulic acid graft is as follows: Sodium hyaluronate with an average molecular weight of 9KD is dissolved in water at a concentration of 10mg / ml; ferulic acid and vitamin C are added at weight ratios of 1:1 and 5:1 with sodium hyaluronate, respectively; nitrogen gas is introduced, and the mixture is activated under nitrogen protection for 30min; 5mol / L hydrogen peroxide is added at a volume ratio of 2%; the mixture is stirred under nitrogen gas at room temperature for 12h; the mixture is dialyzed in a 3500D dialysis bag for 48h; and then freeze-dried to obtain the final product.

4. A process for the preparation of the anti-photoaging skin care composition according to claim 1 or 2, characterized in that, Mix one or both of the following: Viola mandshurica flower extract and Calendula officinalis flower extract, along with sodium hyaluronate-ferulic acid graft, dissolve in purified water, and make up to 100 parts by weight of purified water.

5. The use of the anti-photoaging skincare composition according to claim 1 or 2 in the preparation of anti-photoaging skincare cosmetics.

6. The use according to claim 5, characterized in that, The anti-photoaging skincare composition effectively combats photoaging by promoting the synthesis of Collagen IV and elastin fibers.

7. An anti-photoaging skin care cosmetic, wherein the cosmetic comprises the anti-photoaging skin care composition according to claim 1 or 2.

8. An anti-photoaging skincare cosmetic as described in claim 7, comprising the following components, based on the total mass of the anti-photoaging skincare cosmetic: 0.5-30% anti-photoaging skincare composition, 1-6% emulsifier, 6-30% emollient, 2-15% moisturizer, 0.02-1.0% thickener, with the balance being water and other excipients; the anti-photoaging skincare composition is prepared according to the method of claim 6.

9. The anti-photoaging skincare cosmetic as described in claim 8, characterized in that, The emulsifier is any one or a combination of two or more of the following: PEG-100 stearate, glyceryl stearate, polyglycerol-6 stearate, polyglycerol-6 behenate, polyglycerol-6 distearate, polyglycerol-3 beeswax ester, C14-22 alcohol, C12-20 alkyl glucoside, cetearyl oleate, sorbitan oleate, hydrogenated lecithin, cetyl alcohol, stearyl alcohol, glyceryl stearate derivatives, jojoba esters, sunflower seed wax, sodium stearoyl glutamate, polyglycerol-3, polyglycerol-10 laurate, and sodium di(lauramide-glutamine)lysine. The emollient is any one or a combination of two or more of the following: cetearyl alcohol, isononyl isononanoate, squalane, caprylic / capric triglyceride, beeswax, mineral oil, burdock seed oil, meadowfoam seed oil, dimethicone, cyclopentamethicone, isododecane, jojoba seed oil, triglyceride (ethylhexanoate), behenol, shea butter, pentaerythritol tetraisostearate, dioctyl carbonate, and tocopheryl acetate. The moisturizer is any one or a combination of two or more of the following: glycerin, butylene glycol, dipropylene glycol, 1,3-propanediol, 1,2-hexanediol, ethylhexylglycerin, betaine, sodium hyaluronate, panthenol, and trehalose. The thickener is any one or a combination of two or more of the following: sodium polyacrylate, sodium polyacrylate grafted starch, carbomer, xanthan gum, hydroxyethyl cellulose, polyacrylate crosspolymer-6, ammonium acryloyl dimethyl taurate / VP copolymer, and hydroxyethyl acrylate / sodium acryloyl dimethyl taurate copolymer.

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