A sunscreen composition containing tea extract and its application

Abstract

The present invention discloses a sunscreen composition containing tea extract ingredients and its application. The sunscreen composition provided by the present invention comprises: epigallocatechin gallate, theanine, flavonols, anthocyanidins. The sunscreen composition prepared by the present invention through reasonable compounding of components such as epigallocatechin gallate, theanine, flavonols, anthocyanidins, etc. has good sunscreen effect, a high sun protection index, obvious sunscreen effect, and a certain whitening effect. The four components have a synergistic effect, and the effect is significantly better than that of a single component or any two components. Compared with the traditional use of green tea powder or green tea crude, the present invention can more efficiently utilize natural tea extracts as cosmetic raw materials, and provide certain technical support for the preparation of more green, safe, and non-irritating natural sunscreen cosmetics.

Description

Technical Field

[0001] The present invention belongs to the technical field of cosmetics, and more specifically, relates to a sunscreen composition containing tea extract ingredients and application thereof. Background Art

[0002] In daily life, there are two types of damage to the skin caused by ultraviolet rays: one is immediate damage - sunburn and tanning; the other is long-term damage - sun spots and pigmentation, fine lines and wrinkles appear, which can lead to skin cancer. Therefore, daily UV protection is one of the important measures for skin care. Due to the traditional beauty concept of "whiteness covers three ugliness", Asian women's pursuit of whitening is just like the pursuit of light by humans. Rouge and powder are almost a must-have for every adult woman. There are also a variety of whitening families such as concealer, foundation, loose powder, setting powder, and pressed powder, which whiten whiteness and whiten peace. In fact, whitening is like curing a disease. It is better to treat the root cause than to treat the symptoms. Only by conditioning the inner skin quality and curing the culprit that affects whitening - melanin, can it be most effective. Melanin is a protein present in the basal layer of everyone's skin. Ultraviolet radiation will cause melanin to change and generate a substance that protects the skin. Then melanin moves through layers of cell metabolism to the epidermis of the skin, forming the skin problems we see, such as spots and uneven skin color. Therefore, whitening is also a care project from the inside out.

[0003] Tea contains many bioactive substances, and the key bioactive ingredients include flavonols, theanine, caffeine, etc. The flavonols in green tea have been widely studied for their antioxidant, anti-inflammatory, anti-cancer, anti-obesity and anti-diabetic health protection effects. Epigallocatechin gallate has sunscreen, antioxidant, anti-aging, anti-cancer, anti-cancer, bactericidal and anti-inflammatory effects. Theanine has the effect of reaching deep into the skin, and can gradually dissolve the melanin accumulated in the inner layer of the skin for a long time, avoid long-term pigmentation, and effectively improve the dull and sallow skin.

[0004] With the continuous research on natural plant extracts, more and more sunscreen products are also adding natural plant extract ingredients. Using natural plant extracts to replace all or part of chemical sunscreens to prepare sunscreen can reduce the irritation of sunscreen products, but natural plant extracts have poor stability and are easily oxidized and decomposed, and their sunscreen effect needs to be improved. Tea extracts have been used in food, health care, medicine, daily chemical industry and other fields, but their use in cosmetics is still lacking, resulting in the use of crude tea extracts during use. The addition of tea extracts will affect the stability and appearance of the sunscreen formula system, increase the difficulty of formula development, and result in low efficiency and pertinence during use, and its sunscreen effect is very limited. Therefore, it is urgent to develop and research more and more efficient sunscreen products containing natural tea extracts to provide support for the preparation of more green, safe, efficient and non-irritating natural sunscreen cosmetics. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a sunscreen composition containing tea extract ingredients, which has good whitening and sunscreen effects.

[0006] The main purpose of the present invention is to provide a sunscreen composition containing tea extract ingredients.

[0007] Another object of the present invention is to provide application of the sunscreen composition.

[0008] Another object of the present invention is to provide a whitening and sunscreen product.

[0009] Another object of the present invention is to provide a method for preparing whitening and sunscreen products.

[0010] The above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0011] The invention provides a sunscreen composition containing tea extract ingredients, which comprises the following components in parts by weight: 3-4 parts of epigallocatechin gallate, 3-4 parts of anthocyanidins, 3-5 parts of theanine, and 2-3 parts of flavonols.

[0012] Epigallocatechin gallate (EGCG), molecular formula is C 22 H 18 O 11 It is the main component of green tea polyphenols and is a catechin monomer isolated from tea leaves. EGCG has very strong antioxidant activity and has anti-tumor, anti-ultraviolet radiation and antibacterial effects.

[0013] Anthocyanidin, also known as flower pigment, is a type of water-soluble natural pigment widely found in plants. It is a colored aglycone obtained by hydrolysis of anthocyanin. Tea also contains anthocyanidin. The most effective effect of anthocyanidin is that it can delay aging. Anthocyanidin can make the skin smooth and delicate. Supplementing anthocyanidin can also protect joints. In addition, anthocyanidin can inhibit inflammation, can assist in the treatment of inflammatory diseases, and can also be used to prevent allergies.

[0014] L-Theanine is isolated from green tea and is a characteristic amino acid of tea. Its chemical formula is C7H 14 N2O3, accounting for 1%-2% by weight in dry tea. Theanine has the effects of lowering blood pressure, assisting in tumor inhibition, relaxing nervous tension, relaxing, and resisting fatigue.

[0015] Flavonol (3-Hydroxyflavone) The flavonol used in the present invention refers to tea flavonol, which can be extracted from tea leaves and has a molecular formula of C 15 H 10 O3. The main flavonols in tea are quercetin, myricetin and kaempferol, which account for 2-3% of the water-soluble extract of tea. Flavonols mainly exist in the form of glycosides. Flavonols have antioxidant and anti-tumor functions.

[0016] The sunscreen composition prepared by the present invention has good sunscreen effect after reasonable compounding of epigallocatechin gallate, theanine, flavonols and anthocyanidins components in specific proportions, and the four components have a synergistic enhancement effect. The sunscreen composition has a high sun protection index, obvious sunscreen effect, and whitening effect, and its effect is significantly better than that of a single component or any two or three components. Compared with the traditional use of green tea powder or green tea crude, the present invention can more efficiently utilize natural tea extracts as cosmetic raw materials, and provide certain technical support for the preparation of more green, safe and non-irritating natural sunscreen cosmetics.

[0017] Preferably, the following components are included in parts by weight: 3-4 parts of epigallocatechin gallate, 3-4 parts of anthocyanidins, 4-5 parts of theanine, and 2-3 parts of flavonols.

[0018] Epigallocatechin gallate, theanine, flavonols and anthocyanidins used in the present invention are active ingredients of tea extracts, which can be purchased through commercial channels or purified by extracting tea leaves.

[0019] Furthermore, the sunscreen composition further comprises the following components in parts by weight: 20-35 parts of butylene glycol and 5-10 parts of n-propanol. Butylene glycol and n-propanol can dissolve the above four components and reduce irritation to the skin.

[0020] The present invention provides application of a sunscreen composition in whitening, sunscreening, or in the preparation of whitening and sunscreening products.

[0021] Preferably, the product is a cosmetic or a skin care product.

[0022] The present invention provides a whitening and sunscreen agent, which comprises the sunscreen composition containing the tea extract component.

[0023] Preferably, it also contains a basic cream material, which is prepared by mixing terpineol, phenoxyethanol, isohexadecane, octyl carbonate and sodium dodecylbenzene sulfonate. Among them, terpineol, phenoxyethanol, isohexadecane, octyl carbonate and sodium dodecylbenzene sulfonate are commonly used basic materials for creams and are carriers for sunscreen combinations applied to the skin surface.

[0024] Preferably, the composition further comprises a basic cream material, which is prepared by mixing 1-3 parts of terpineol, 0.5-2 parts of phenoxyethanol, 1-2 parts of isohexadecane, 2-4 parts of octyl carbonate and 1-2 parts of sodium dodecylbenzene sulfonate by weight.

[0025] Preferably, the basic cream-like material is prepared from 3 parts of terpineol, 1 part of phenoxyethanol, 2 parts of isohexadecane, 2 parts of octyl carbonate and 1 part of sodium dodecylbenzene sulfonate.

[0026] Preferably, the mass ratio of the sunscreen composition to the basic cream material is (11-16):(9-13).

[0027] The present invention also provides a preparation method of the whitening and sunscreen agent: after epigallocatechin gallate, theanine and anthocyanidin are mixed, butylene glycol is added, the mixture is evenly mixed, and then n-propanol and water are added and evenly mixed to prepare phase A; then flavonol and basic cream material are mixed to prepare phase B; phase A and phase B are mixed and homogenized to obtain the whitening and sunscreen agent.

[0028] Preferably, 52-54 parts by weight of water is used.

[0029] Preferably, the homogenization conditions are a rotation speed of 8000 rpm / min and a time of 5 min.

[0030] As the most preferred embodiment, the present invention provides a method for preparing a whitening and sunscreen product: epigallocatechin gallate, theanine, and anthocyanidin are mixed uniformly according to a proportion, added to a butanediol solution at room temperature, shaken to dissolve, and then n-propanol and a certain amount of water are added and mixed uniformly to prepare phase A. Flavonols and a certain amount of basic cream material are weighed to prepare phase B. Phases AB are mixed, and homogenized using a homogenizer at a speed of 8000 rpm / min for 5 minutes to complete the preparation. The prepared whitening and sunscreen agent is stored in a glass bottle and stored at 4°C.

[0031] The present invention has the following beneficial effects:

[0032] The present invention studies that after rationally compounding components such as epigallocatechin gallate, theanine, flavonols, anthocyanins, etc., the prepared sunscreen composition has a good sunscreen effect, and the four components have a synergistic enhancement effect. The prepared sunscreen composition has a high sun protection index, has a significant sunscreen effect, and also has a whitening effect, and its effect is significantly better than that of a single component or any two components. Compared with the traditional use of green tea powder or green tea crude, the present invention can more efficiently utilize natural tea extracts as cosmetic raw materials, and provide certain technical support for the preparation of more green, safe, and non-irritating natural sunscreen cosmetics. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific examples, but the examples are intended to explain the present invention and are not to be construed as limiting the present invention. Specific techniques or conditions not specified in the examples shall be carried out in accordance with the techniques or conditions described in the literature in the art or in accordance with the product instructions.

[0034] In a specific embodiment of the present invention, epigallocatechin gallate, theanine, flavonols and anthocyanins are all derived from commercially available products, wherein the purity of epigallocatechin gallate is 98%, CAS No. 989-51-5; the concentration of theanine is 98%, CAS No. 3081-61-6; the CAS No. of anthocyanins is 13306-05-3, and the CAS No. of flavonols is 577-85-5.

[0035] The basic cream material used in the following preparation of the present invention belongs to the commonly used auxiliary materials in the field of cosmetics, which plays a role in moisturizing and storage; the basic cream material is prepared by mixing 1-3 parts of terpineol, 0.5-2 parts of phenoxyethanol, 1-2 parts of isohexadecanes, 2-4 parts of octyl carbonate and 1-2 parts of sodium dodecylbenzene sulfonate by weight, and is prepared by mixing 3 parts of terpineol, 1 part of phenoxyethanol, 2 parts of isohexadecanes, 2 parts of octyl carbonate and 1 part of sodium dodecylbenzene sulfonate in the following embodiments. Other conventional auxiliary materials in the field can also be used for preparation, and the amount used is adjusted according to different auxiliary materials to prepare different emulsions, creams, sprays or essence products, which are not limited to the sunscreen prepared by the present invention, and only play an auxiliary role, so the use ratio of auxiliary materials is not too limited.

[0036] Example 1

[0037] A method for preparing a sunscreen composition containing tea extract comprises the following steps: according to weight proportions, 3 parts of epigallocatechin gallate, 3 parts of anthocyanin and 3 parts of theanine are put into a sterile centrifuge tube, and the tube is placed on a vortex shaker for shaking; after the substances in the centrifuge tube are evenly mixed, 30 parts of a butanediol solution is added for shaking for 5 minutes; after the shaking is completed, 54 parts of deionized water and 8 parts of n-propanol are added into the centrifuge tube, and after evenly mixing, the centrifuge tube is recorded as a water phase at room temperature.

[0038] Then, 2 parts of flavonol and 10 parts of the basic cream material were weighed in a beaker, stirred evenly and recorded as the oil phase. The water phase and the oil phase were mixed and homogenized and emulsified using a homogenizer. The homogenization conditions were a speed of 8000 rpm / min and an average time of 5 min. Sunscreen A1 was prepared and stored in a brown glass bottle in a 4°C refrigerator for later use.

[0039] Example 2

[0040] A method for preparing a sunscreen composition containing tea extract comprises the following steps: according to weight proportions, 3 parts of epigallocatechin gallate, 4 parts of anthocyanidin and 3 parts of theanine are put into a sterile centrifuge tube, and the tube is placed on a vortex shaker for shaking; after the substances in the centrifuge tube are evenly mixed, 24 parts of a butanediol solution is added for shaking for 5 minutes; after the shaking is completed, 53 parts of deionized water and 10 parts of n-propanol are added into the centrifuge tube, and after evenly mixing, the centrifuge tube is recorded as a water phase at room temperature.

[0041] Then, 3 parts of flavonol and 13 parts of basic cream material were weighed in a beaker, stirred evenly and recorded as the oil phase. The aqueous phase and the oil phase were mixed and homogenized and emulsified using a homogenizer. The homogenization conditions were a speed of 8000 rpm / min and an average time of 5 min. Sunscreen A2 was prepared and stored in a brown glass bottle in a 4°C refrigerator for later use.

[0042] Example 3

[0043] A method for preparing a sunscreen composition containing a tea extract component comprises the following steps: according to weight proportions, 3 parts of epigallocatechin gallate, 4 parts of anthocyanin and 4 parts of theanine are loaded into a sterile centrifuge tube, and the tube is placed on a vortex shaker for shaking; after the substances in the centrifuge tube are evenly mixed, 24 parts of a butanediol solution is added for shaking for 5 minutes; after the shaking is completed, 53 parts of deionized water and 5 parts of n-propanol are added into the centrifuge tube, and after evenly mixing, the centrifuge tube is recorded as a water phase at room temperature.

[0044] Then, 2 parts of flavonol and 9 parts of the basic cream material were weighed in a beaker, and the mixture was stirred evenly and recorded as the oil phase. The aqueous phase and the oil phase were mixed and homogenized and emulsified using a homogenizer. The homogenization conditions were a speed of 8000 rpm / min and an average time of 5 min. Sunscreen A3 was prepared and stored in a brown glass bottle in a 4°C refrigerator for later use.

[0045] Example 4

[0046] A method for preparing a sunscreen composition containing a tea extract component comprises the following steps: according to weight proportions, 4 parts of epigallocatechin gallate, 3 parts of anthocyanidins and 4 parts of theanine are put into a sterile centrifuge tube, and the tube is placed on a vortex shaker for shaking; after the substances in the centrifuge tube are evenly mixed, 32 parts of a butanediol solution is added for shaking for 5 minutes; after the shaking is completed, 52 parts of deionized water and 5 parts of n-propanol are added into the centrifuge tube, and after evenly mixing, the centrifuge tube is recorded as a water phase at room temperature.

[0047] Then, 3 parts of flavonol and 9 parts of basic cream material were weighed in a beaker, stirred evenly and recorded as the oil phase. The aqueous phase and the oil phase were mixed and homogenized and emulsified using a homogenizer. The homogenization conditions were a speed of 8000 rpm / min and an average time of 5 min. Sunscreen A4 was prepared and stored in a brown glass bottle in a 4°C refrigerator for later use.

[0048] Example 5

[0049] A method for preparing a sunscreen composition containing a tea extract component comprises the following steps: according to weight proportions, 4 parts of epigallocatechin gallate, 3 parts of anthocyanidin and 5 parts of theanine are put into a sterile centrifuge tube, and the tube is placed on a vortex shaker for shaking; after the substances in the centrifuge tube are evenly mixed, 32 parts of a butanediol solution is added for shaking for 5 minutes; after the shaking is completed, 52 parts of deionized water and 5 parts of n-propanol are added into the centrifuge tube, and after evenly mixing, the centrifuge tube is recorded as a water phase at room temperature.

[0050] Then, 2 parts of flavonol and 9 parts of the basic cream material were weighed in a beaker, stirred evenly and recorded as the oil phase. The aqueous phase and the oil phase were mixed and homogenized and emulsified using a homogenizer. The homogenization conditions were a speed of 8000 rpm / min and an average time of 5 min. Sunscreen A5 was prepared and stored in a brown glass bottle in a 4°C refrigerator for later use.

[0051] Example 6

[0052] A method for preparing a sunscreen composition containing a tea extract component comprises the following steps: according to weight proportions, 4 parts of epigallocatechin gallate, 4 parts of anthocyanidin and 5 parts of theanine are put into a sterile centrifuge tube, and the tube is placed on a vortex shaker for shaking; after the substances in the centrifuge tube are evenly mixed, 32 parts of a butanediol solution is added for shaking for 5 minutes; after the shaking is completed, 52 parts of deionized water and 5 parts of n-propanol are added into the centrifuge tube, and after evenly mixing, the centrifuge tube is recorded as a water phase at room temperature.

[0053] Then, 3 parts of flavonol and 9 parts of basic cream material were weighed in a beaker, stirred evenly and recorded as the oil phase. The aqueous phase and the oil phase were mixed and homogenized and emulsified using a homogenizer. The homogenization conditions were a speed of 8000 rpm / min and an average time of 5 min. Sunscreen A6 was prepared and stored in a brown glass bottle in a 4°C refrigerator for later use.

[0054] Example 7

[0055] A method for preparing a sunscreen composition containing a tea extract component comprises the following steps: according to weight proportions, 4 parts of epigallocatechin gallate, 3 parts of anthocyanidin and 5 parts of theanine are put into a sterile centrifuge tube, and the tube is placed on a vortex shaker for shaking; after the substances in the centrifuge tube are evenly mixed, 32 parts of a butanediol solution is added for shaking for 5 minutes; after the shaking is completed, 52 parts of deionized water and 5 parts of n-propanol are added into the centrifuge tube, and after evenly mixing, the centrifuge tube is recorded as a water phase at room temperature.

[0056] Then, 3 parts of flavonol and 10 parts of basic cream material (prepared by mixing pinene alcohol, phenoxyethanol, isohexadecane, octyl carbonate and sodium dodecylbenzene sulfonate) were weighed in a beaker, and the mixture was stirred evenly and recorded as the oil phase. The aqueous phase and the oil phase were mixed and homogenized and emulsified using a homogenizer, with a homogenization condition of 8000 rpm / min and an average time of 5 min. Sunscreen A7 was prepared and stored in a glass bottle in a refrigerator at 4°C for later use.

[0057] Comparative Example 1

[0058] In this comparative example, different sunscreens were prepared by using different amounts of raw material components. The specific amounts are shown in Table 1 below. Other method conditions remained the same as in Example 3. The prepared sunscreens were used in subsequent test experiments.

[0059] Table 1 Sunscreen ingredients with different raw material component amounts

[0060]

[0061] In addition, the present invention also uses epigallocatechin gallate, anthocyanin or theanine alone to carry out sunscreen test determination, which shows that the sunscreen effect of using these three substances alone is not very good, and the effect is lower than the effect of the comparative example of the present invention. This may be because the use of these three substances alone will lead to poor effects due to their unstable properties and easy oxidation; while the present invention makes full use of the antioxidant activity of each component after compounding different components, and after preparing the water phase and the oil phase and mixing with the basic cream and other auxiliary materials, the properties of each component are stabilized, and they interact with each other to enhance their effects. At the same time, the present invention also uses the basic cream material alone as a blank control for sunscreen determination, which shows that the use of only the basic cream material does not have whitening and sunscreen activity, but only plays a moisturizing and storage role.

[0062] Test experiment 1: sun protection performance test

[0063] The sunscreens prepared in Examples 1-7 and Comparative Examples 1-9 were tested for sun protection index, which is a protective index for evaluating the ability of sunscreen cosmetics to protect the skin from sunburn / sunburn. An SPF (sun protection index)-290s analysis system was used to draw a blank background curve of the carrier on the SPF-290s analysis system, and a spotter was used to evenly spot 2 mg / cm 2 After drying, randomly test 10 points of the sample, depict the corresponding light wavelength, calculate the sample test results, and obtain the SPF value and standard deviation. Each sample is tested 5 times and the test results are statistically analyzed.

[0064] The results are shown in Table 2, which show that Example 4 has the best sunscreen effect, slightly better than other examples, and the sunscreen prepared by using epigallocatechin gallate, anthocyanidin, theanine, and flavonol in a certain proportion has a synergistic effect, and its sunscreen effect is significantly better than the effect of any two or three components. And the larger the SPF value, the better the sunscreen effect of preventing sunburn / sunburn. It shows that the sunscreen products A1 to A7 provided by the present invention have good ability to protect against medium-wave ultraviolet rays.

[0065] Table 2 Sun Protection Index

[0066] project Example 1 Example 2 Example 3 Example 4 Example 5 SPF 48±1.71 48±1.82 49±1.76 50±1.33 49±1.88 project Example 6 Example 7 Comparative Example 1 Comparative Example 2 Comparative Example 3 SPF 49±1.62 49±1.78 31±2.37 37±1.74 33±2.41 project Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 SPF 37±2.13 36±1.96 34±2.31 29±2.37 40±1.92 project Comparative Example 9 SPF 42±1.87

[0067] Test experiment 2 Whitening effect experiment

[0068] 108 volunteers aged between 25 and 40 were selected, and they were divided into 18 groups while ensuring that the average age of each group was not much different, and volunteers of each age group were ensured as much as possible. The initial skin chromaticity and melanin value of each volunteer were recorded as L0, and then the sunscreens prepared by the above-mentioned Examples 1-7 and Comparative Examples 1-9 were respectively used for two weeks, and the skin brightness L* value was measured using a Lab colorimetric system spectrophotometer. The larger the L* value, the more the color tends to be white, and the smaller the L* value, the more it tends to be black. The test was repeated three times in a row, and the average value was taken. The ΔL value obtained by subtracting the initial L0 value from the L* value after two weeks was the whitening value.

[0069] The measurement results are shown in Table 3 below. The higher the ΔL value, the better the whitening effect. The sunscreen prepared in Example 5 of the present invention has the highest ΔL after use, and its whitening effect is the best, which is significantly better than other groups, especially Comparative Examples 1 to 9. It is shown that epigallocatechin gallate, anthocyanidin, theanine, and flavonol are compounded in a certain proportion and used with a synergistic effect, and its whitening effect is better than that of a single component or any two components.

[0070] Table 3 Skin ΔL value

[0071] project ΔL Example 1 5.1 Example 2 5.3 Example 3 5.4 Example 4 5.7 Example 5 6.2 Example 6 5.9 Example 7 6.1 Comparative Example 1 3.2 Comparative Example 2 2.1 Comparative Example 3 1.9 Comparative Example 4 3.4 Comparative Example 5 2.7 Comparative Example 6 3.2 Comparative Example 7 2.4 Comparative Example 8 3.7 Comparative Example 9 4.5

[0072] In summary, the present invention shows that the composition containing tea extract ingredients prepared by using epigallocatechin gallate, theanine, flavonols, and anthocyanidins has a good sunscreen effect. The four components have a synergistic effect after reasonable compounding. The sun protection index is high, and it has a significant sunscreen effect. It also has a certain whitening effect. After mixing with basic cream materials, it is less irritating to people and has a certain moisturizing effect. Compared with the traditional use of green tea powder or green tea crude, the present invention can use tea extracts more efficiently and specifically, and at the same time provide a basis for preparing tea extracts in sunscreen cosmetics, and the component configuration ratio and preparation process can be further improved and optimized according to actual use conditions.

[0073] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A sunscreen composition containing tea extract, characterized in that: The invention comprises the following components in parts by weight: 3-4 parts of epigallocatechin gallate, 3-4 parts of anthocyanidin, 3-5 parts of theanine and 2-3 parts of flavonol.

2. The composition according to claim 1, characterized in that The invention comprises the following components in parts by weight: 3-4 parts of epigallocatechin gallate, 3-4 parts of anthocyanidin, 4-5 parts of theanine and 2-3 parts of flavonol.

3. The composition according to claim 1 or 2, characterized in that The invention also comprises the following components in parts by weight: 24-32 parts of butanediol and 5-10 parts of n-propanol.

4. Use of the composition according to any one of claims 1 to 3 in whitening and sun protection.

5. Use of the composition according to any one of claims 1 to 3 in the preparation of whitening and sunscreen products.

6. The use according to claim 5, characterized in that: The product is a cosmetic or a skin care product.

7. A whitening and sunscreen agent, characterized in that: A sunscreen composition comprising any one of claims 1 to 3.

8. The whitening and sunscreen agent according to claim 7, characterized in that: The invention also contains a basic cream material, which is prepared by mixing 1-3 parts of pineol, 0.5-2 parts of phenoxyethanol, 1-2 parts of isohexadecane, 2-4 parts of octyl carbonate and 1-2 parts of sodium dodecylbenzene sulfonate by weight.

9. The whitening and sunscreen agent according to claim 8, characterized in that: The weight ratio of the sunscreen composition to the basic cream material is (11-16):(9-13).

10. The method for preparing the whitening and sunscreen agent according to any one of claims 7 to 9, characterized in that: Epigallocatechin gallate, theanine and anthocyanidin are mixed, butanediol is added, and the mixture is evenly mixed. Then, n-propanol and water are added and the mixture is evenly mixed to prepare phase A. Then, flavonol and basic cream material are mixed to prepare phase B. Phase A and phase B are mixed and homogenized to obtain a whitening and sunscreen agent.

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