White tea composition with whitening and wrinkle fading effects as well as preparation method and application of white tea composition

Abstract

The invention belongs to the technical field of cosmetics, and particularly relates to a white tea composition with whitening and wrinkle fading effects as well as a preparation method and application of the white tea composition. The white tea composition is prepared from the following components in parts by weight: 1 to 5 parts of white tea extract, 0.5 to 2 parts of pachysandra glabra fruit extract and 0.5 to 2 parts of pachysandra glabra fruit extract. The composition with whitening and wrinkle fading effects is researched and developed by adopting organic combination of the white tea extract, the melaleuca glabra fruit extract and the clerodendranthus spicatus fruit extract, the three active components are scientifically compounded in a preferred range of the composition, efficacy complementation and synergistic interaction are achieved, the antioxidant range is wider, the stability is improved, and the composition has the effects of whitening and wrinkle fading. The skin aging can be radically delayed, the melanin precipitation can be improved, and the problems of fine wrinkles, darkness, laxity, skin darkness and yellowing and the like can be reduced, so that excellent whitening and wrinkle fading effects can be realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cosmetics, and particularly relates to a white tea composition with whitening and fine line lightening effects, and a preparation method and application thereof. BACKGROUND

[0002] Skin whitening and anti-aging are core needs in the field of modern skin care products. However, the existing technology still has significant deficiencies in achieving safe and efficient synergistic effects. In the current market products, whitening ingredients mostly rely on chemical or semi-synthetic substances such as vitamin C and its derivatives, nicotinamide, arbutin, etc. These ingredients generally have poor stability and are easily oxidized and lost effectiveness due to light and temperature. For example, vitamin C is prone to decomposition during storage, resulting in a decrease in efficacy, and high-concentration use can irritate the skin, possibly causing redness, sensitivity and other adverse reactions. In terms of fine line lightening, retinol ingredients can promote collagen synthesis, but they also have the limitations of strong irritation and the need for strict light avoidance, making it difficult to meet the needs of sensitive skin groups.

[0003] Another prominent deficiency of the existing technology is the single efficacy and lack of synergy. Most whitening products only target a single link of melanin production (such as inhibiting tyrosinase activity), while ignoring the synergistic effects of multiple factors such as inflammation and free radical damage during skin aging. At the same time, existing anti-aging products often focus on collagen synthesis, but do not address the problem of UV-induced pigmentation, making users need to use multiple products, which not only increases the burden on the skin, but also makes it difficult to achieve synergistic effects.

[0004] In addition, existing compositions have significant limitations in formulation design. On the one hand, physical mixing of chemical synthetic ingredients and natural extracts cannot avoid mutual interference of efficacy; on the other hand, most formulations do not consider skin microecological balance, and long-term use can lead to dysbiosis, which can exacerbate skin sensitivity problems. Although the existing technology attempts to use multiple plant extracts in combination, it still does not break through the limitations of single efficacy orientation.

[0005] Therefore, it is a technical problem to be solved in the field to develop a natural composition that has high stability, low irritation, and can simultaneously achieve whitening and fine line lightening effects through the synergistic action of multiple components. SUMMARY

[0006] The present application aims to overcome the deficiencies of the prior art and provide a white tea composition with whitening and fine line lightening effects, and a preparation method and application thereof. Through the synergistic action of the components, the product's whitening and fine line lightening effects are significantly improved, achieving an upgrade from "single efficacy" to "comprehensive care", making the skin care effects of whitening and fine line lightening more efficient, gentle, and suitable for a wider range of people.

[0007] To achieve the above purpose, the technical solution adopted by the present application includes:

[0008] In a first aspect, the present invention provides a white tea composition with whitening and wrinkle-reducing effects, the white tea composition comprising the following components: white tea extract, smooth golden tiger tail fruit extract and chandelier tree fruit extract.

[0009] Preferably, the white tea composition comprises the following components in parts by weight: 1-5 parts white tea extract, 0.5-2 parts smooth golden tiger tail fruit extract, and 0.5-2 parts chandelier tree fruit extract.

[0010] White tea typically refers to tea leaves picked from varieties such as Da Bai Cha, Shui Xian Cha, and group-grown tea trees. These leaves undergo a specific processing technique, without frying or rolling, and are produced through withering and drying. Its extracts are rich in tea polyphenols, amino acids, vitamin C, and flavonoids, which can inhibit tyrosinase activity, reduce melanin synthesis and deposition, scavenge free radicals, block oxidative stress caused by ultraviolet radiation, and prevent pigmentation. Furthermore, its excellent antioxidant capacity can combat photoaging of the skin, reduce collagen loss, help maintain skin elasticity, and indirectly improve fine lines caused by aging.

[0011] Smooth golden tiger tail fruit, also known as acerola cherry, is rich in vitamin C and other vitamins and minerals. It is an excellent natural source of vitamin C, which can effectively inhibit melanin production and promote collagen synthesis, improving dull skin tone. At the same time, it contains organic acids, flavonoids and other components that can enhance the ability to eliminate free radicals, delay skin aging, and improve fine lines and sagging skin. It can also promote the synthesis of hyaluronic acid and collagen I and III, accelerate skin repair, and improve the skin's ability to retain moisture.

[0012] Chandelier tree fruit extract is rich in polysaccharides, flavonoids, and minerals, excelling at hydrating and locking in moisture, and strengthening the skin barrier, especially effective for roughness and flaking caused by dryness. However, when used alone, its antioxidant capacity is relatively weak and it cannot address aging problems caused by free radicals, such as fine lines and sagging.

[0013] This invention utilizes a combination of white tea extract, golden privet fruit extract, and chandelier tree fruit extract to develop a composition with whitening and wrinkle-reducing effects. When these three ingredients are combined within the preferred range of this invention, they not only have a broader range of antioxidant effects and improved stability, but also delay skin aging and improve melanin deposition from the root, reducing fine lines, dullness, sagging, and yellowing skin, achieving excellent whitening and wrinkle-reducing effects.

[0014] Preferably, the white tea composition comprises the following components in parts by weight: 1.2-4.8 parts of white tea extract, 0.8-2 parts of smooth golden tiger tail fruit extract, and 0.8-1.8 parts of chandelier tree fruit extract.

[0015] Preferably, the white tea composition comprises the following components by weight: 3 parts of white tea extract, 1.5 parts of smooth Malpighia glabra fruit extract, and 1.5 parts of Radermachia hirta fruit extract.

[0016] It is found through experiments that when the three components are matched in the above optimal amount, the synergistic effect of each component can be fully stimulated, and the respective efficacy can be maximized. The composition prepared in this way has excellent effects in whitening, anti-aging, and wrinkle lightening, and has high cost performance, which can optimize the use value on the basis of ensuring efficacy.

[0017] In a second aspect, the present application provides the use of the white tea composition in cosmetics.

[0018] Preferably, the cosmetics include serums, creams, sunscreens, masks, and color cosmetics.

[0019] In a third aspect, the present application provides a lotion with whitening and wrinkle lightening effects, which comprises the white tea composition.

[0020] Preferably, the lotion further comprises a water-based moisturizer, an oil-based moisturizer, and a preservative.

[0021] Preferably, the water-based moisturizer comprises at least one of sodium hyaluronate, panthenol, 1,2-pentanediol, and glycerol glucose; and / or, the oil-based moisturizer comprises at least one of squalane, hydrogenated lecithin, and shea butter; and / or, the preservative comprises phenoxyethanol.

[0022] In a fourth aspect, the present application provides a preparation method of the lotion, comprising the following steps:

[0023] S1, adding a water-based moisturizer to water, heating to 70-75℃, and stirring uniformly to obtain phase A;

[0024] S2, adding an oil-based moisturizer to water, heating to 75-80℃, and stirring to dissolve to obtain phase B;

[0025] S3, adding phase B at a constant temperature of 75-80℃ to phase A at a constant temperature of 70-75℃, stirring and emulsifying at a speed of 800-1200 rpm for 20-30 min to obtain phase C;

[0026] S4, cooling phase C to 45-50℃, adding white tea extract, smooth Malpighia glabra fruit extract, and Radermachia hirta fruit extract, and then adding a preservative, adjusting the pH of the system to 5.5-6.5, homogenizing at 1500-2500 rpm until no clumps are formed, and filtering to obtain the lotion.

[0027] The squalane and shea nut butter in the oil-based moisturizer of the B phase are solid or semi-solid, and need to be heated to above the melting point (usually above 70 DEG C) to completely melt into a liquid state, which has good fluidity. Although the water-based moisturizer of the A phase is in a liquid state, its viscosity can be reduced by heating to a temperature close to that of the B phase, thereby enhancing the fusion ability with the B phase. If the temperature of the A phase is too low, the B phase will solidify after being poured in due to rapid cooling, forming local clumps that cannot be dispersed into fine oil droplets by stirring.

[0028] Compared with the prior art, the present application has the following advantages:

[0029] The present application adopts white tea extract, Malpighia glabra fruit extract and Rhodamnia smaragdina fruit extract to develop a composition with whitening and fine line lightening effects. The tyrosinase inhibition of white tea extract, the vitamin C whitening pathway of Malpighia glabra fruit extract and the anti-inflammatory and stability maintenance effect of Rhodamnia smaragdina fruit extract can form a triple whitening mechanism, from inhibiting melanin production, blocking deposition to improving dull skin, improving the whitening efficiency in multiple links, and the mildness is better than that of a single high-concentration whitening ingredient, which can effectively reduce the irritation risk of the product. In addition, the antioxidant and anti-photoaging of white tea extract, the collagen promotion of Malpighia glabra fruit extract and the moisturizing and repair of Rhodamnia smaragdina fruit extract can form complementary components, thereby improving fine lines from multiple dimensions such as preventing damage, active repair and maintaining state, reducing collagen loss, promoting new growth, relieving deepening of lines caused by dryness, and effectively improving fine lines. Therefore, the composition of the present application realizes complementary and synergistic effects of the three components, improves skin health while whitening and lightening fine lines, and has significant application value. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 Figure 2 is a contrastive graph of Indian lines of the subject before and after using the emulsion of Example 6. DETAILED DESCRIPTION

[0031] For the purpose of better illustrating the object, technical scheme and advantages of the present application, the present application will be further described in conjunction with specific examples. Those skilled in the art should understand that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0032] Unless otherwise specified, all raw materials involved in the following examples and comparative examples are commercially available general materials. The Malpighia glabra fruit extract, Rhodamnia smaragdina fruit extract and white tea extract described in the following examples and comparative examples are purchased from Guangzhou Huayang Biological Technology Co., Ltd.

[0033] Examples 1-5

[0034] Example 1-5 provides a white tea composition with whitening and fine line reducing efficacy. The formulation table of the white tea composition is shown in Table 1. The preparation method of the white tea composition comprises the following steps:

[0035] Mix the white tea extract, smooth Psidium guajava fruit extract and Rhodomyrtus tomentosa fruit extract evenly.

[0036] Table 1 Formulation table of the white tea composition of Example 1-5 (weight parts)

[0037]

[0038]

[0039] Example 6-10

[0040] Example 5-10 provides an emulsion with whitening and fine line reducing efficacy. The formulation table of the emulsion is shown in Table 2 (total weight parts are 100 parts). The white tea composition in Example 5-10 corresponds to the white tea composition prepared in Example 1-5 in turn. The preparation method of the emulsion comprises the following steps:

[0041] S1, add deionized water, start stirring, add sodium hyaluronate, panthenol, glycerol glucoside in turn, stir until completely dissolved, heat to 70-75°C, add 1,2-pentanediol, stir until uniform, get phase A;

[0042] S2, add squalane, hydrogenated lecithin, shea butter separately, heat to 75-80°C, stir until completely melted and mixed evenly, get phase B;

[0043] S3, slowly pour the constant temperature 75-80°C phase B into the constant temperature 70-75°C phase A, add while stirring, speed up to 1000 rpm, emulsify for 20 minutes, form a uniform emulsion, after emulsification, keep stirring, speed down to 500 rpm, get phase C;

[0044] S4, cool the phase C to 45-50°C, slowly add the white tea composition in turn, reduce the stirring speed to 400 rpm, add phenoxyethanol, adjust the system pH to 5.5-6.5 with 1% sodium citrate solution, homogenize at 2000 rpm to ensure no caking, stir until dissolved, filter, stand still, get the emulsion.

[0045] Table 2 Formulation table of the emulsion of Example 6-10 (weight parts)

[0046]

[0047] Comparative Example 1-8

[0048] Comparative Examples 1-8 provide a composition, the formulation table of which is shown in Table 3.

[0049] Table 3 Formulation table of the composition described in Comparative Examples 1-8 (parts by weight)

[0050]

[0051] In Comparative Example 6, an equal amount of green tea extract is used to replace white tea extract; in Comparative Example 7, an equal amount of fig extract is used to replace Malania aceifoli fruit extract; and in Comparative Example 9, an equal amount of ginkgo fruit extract is used to replace Pittosporium elliptifolium fruit extract.

[0052] Comparative Examples 9-16

[0053] Comparative Examples 9-16 provide an emulsion, the formulation table of which is shown in Table 4 (100 parts of total weight). The compositions described in Comparative Examples 9-16 correspond to the compositions prepared in Comparative Examples 1-8, respectively. The emulsion is prepared in the same manner as in Example 6, with the exception of the formulation.

[0054] Table 4 Formulation table of the emulsion described in Comparative Examples 9-16 (parts by weight)

[0055]

[0056] Effect Example 1

[0057] In this effect example, the compositions prepared in Examples 1-5 and Comparative Examples 1-8 are used as test samples, and a whitening test is performed thereon, in accordance with the following method:

[0058] The B16 cells of mouse melanoma are used as the research object, the B16 cells are cultured to restore the state of melanin synthesis, the test sample is dissolved in PBS solution to obtain a test solution (80 mg / mL), which is added to the B16 cell culture solution, and incubated for 24 h. An equal amount of PBS solution is added as a control group, and after incubation, centrifugation is performed, the supernatant is added to a 96-well plate, 5 mM L-Dopa solution is added, and after mixing, the mixture is incubated in a 37°C constant temperature water bath for 10 min. The absorbance of each well is measured at a wavelength of 475 nm, the relative activity of intracellular tyrosinase (%) = A0 / A1 x 100%, wherein A0 is the average absorbance value of the experimental group, and A1 is the average absorbance value of the control group. Nicotinamide is used as a positive control. The specific test results are shown in Table 5. The lower the relative activity of the cell tyrosinase, the better the whitening effect.

[0059] Table 5

[0060]

[0061] The results of Table 5 show that the white tea composition prepared by compounding white tea extract, smooth gold back fruit extract and chandelier tree fruit extract according to the present application can effectively inhibit the activity of tyrosinase, thereby achieving excellent whitening effect, and the whitening effect of the white tea composition described in Example 1 is the best.

[0062] When one of the three active components is missing in Comparative Examples 1-3, respectively, the relative activity of tyrosinase is significantly higher than that of the examples, indicating that the three components selected in the present application are not simply superimposed, and the mutual cooperation between the three components can produce a synergistic effect to exert a stronger inhibitory effect to enhance the whitening effect of the product. The three components are indispensable. When the amount of the three components in Comparative Examples 4-5 exceeds the preferred range of the present application, the relative activity of tyrosinase is also higher than that of the examples, indicating that the ratio of the three active components is a key factor affecting the whitening effect of the product. Only within the limited ratio range of the present application can the synergistic inhibitory effect be fully exerted. Once the ratio deviates slightly, the inhibitory effect will be weakened. When other components are used to replace the three original components in Comparative Examples 6-8, the relative activity of tyrosinase of the prepared composition is also significantly higher than that of the examples, indicating that white tea extract, smooth gold back fruit extract and chandelier tree fruit extract cannot be simply replaced in the composition described in the present application. The replaced components cannot achieve the synergistic inhibitory effect of the original components, further proving that the three active components selected in the present application are the core to achieve excellent whitening effect.

[0063] Effect Example 2

[0064] In this effect example, the emulsions prepared in Examples 6-10 and Comparative Examples 9-16 are used as test samples, and the anti-wrinkle and fine line effect is tested. The specific test method is as follows:

[0065] (1) Wrinkle test: three faces are photographed using VISIA, and the parameters (area and area ratio) of crow's feet, under-eye fine lines and Indian wrinkle are analyzed by IPP software.

[0066] (2) Test procedure: 140 volunteers aged 30-60 years were selected and randomly divided into 14 groups, each group of 10 volunteers used a test sample of Examples 6-10 and Comparative Examples 9-16, and a polypeptide emulsion on the market was selected as a control group for comparison, and the average value of the test results of each group was finally obtained. The patients had crow's feet, under-eye fine lines, nasolabial folds, and Indian lines on the face, according to the Skin Aging Atlas (Asian), crow's feet, under-eye fine lines, nasolabial folds, and Indian lines were ≥ grade 2, and pores were ≥ grade 2. Before using the product, the wrinkle parameters were tested and recorded as W0, respectively; after cleansing in the morning and evening, each product was applied once a day, and the use was continued for 4 weeks. At the 4th week, the skin wrinkle parameters were tested and recorded as W4, and the wrinkle area change rate of the product was calculated according to the formula, so as to reflect the anti-wrinkle improvement effect. The higher the wrinkle area change rate, the better the improvement effect.

[0067] The calculation formula of the wrinkle area change rate is:

[0068] Wrinkle area change rate (%) = (W4-W0) / W0;

[0069] Wherein, R4 represents the average value of Gloss DSC after testing 3 times by Glossymeter GL200, and R0 represents the average value of Gloss DSC after testing 3 times by Glossymeter GL200. The specific human anti-wrinkle and fine line efficacy test results are shown in Table 6.

[0070] Table 6

[0071]

[0072] The results in Table 6 show that the emulsion containing the white tea composition of the present application has excellent anti-wrinkle and fine line effect, and can significantly reduce the skin wrinkle area. In the comparative examples, due to the absence of the specific active component or the component amount ratio range exceeding the preferred range, the wrinkle area change rate of the emulsion prepared from the composition is significantly lower than that of the examples. Further prove that the specific active component and its preferred amount ratio range are the key to give the product excellent anti-wrinkle and fine line effect. Only when the specific active component is used in the preferred amount ratio range, can the skin wrinkle area be significantly reduced, and excellent anti-wrinkle and fine line effect can be achieved; if the specific active component is missing or the component amount ratio exceeds the preferred range, the same effect cannot be achieved, fully embodying the synergistic effect of the specific active component in the preferred amount ratio.

[0073] Example 3

[0074] The emulsion prepared in Example 6 was taken as a test sample, and the stability of the test sample was tested. The specific test method was as follows: the sample was placed at room temperature (25°C) and high temperature (45°C) for 1 day and 7 days, and whether the product had stratification, precipitation and other phenomena was observed. The test results showed that the emulsion prepared in Example 6 had no discoloration and precipitation, that is, the emulsion containing the composition prepared according to the technical scheme of the application had good stability.

[0075] Finally, it should be noted that the above examples are used to illustrate the technical scheme of the application and not to limit the scope of protection of the application. Although the application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical scheme of the application can be modified or replaced by equivalents without departing from the essence and scope of the technical scheme of the application.

Claims

1. A white tea composition having whitening and fine line reducing effects, characterized in that, The white tea composition comprises the following components: white tea extract, Malpighia glabra fruit extract, and Gordonia extract.

2. The white tea composition of claim 1, wherein The white tea composition comprises the following components by weight: 1-5 parts of white tea extract, 0.5-2 parts of Malpighia glabra fruit extract, and 0.5-2 parts of Gordonia extract.

3. The white tea composition of claim 2, wherein The white tea composition comprises the following components by weight: 1.2-4.8 parts of white tea extract, 0.8-2 parts of Malpighia glabra fruit extract, and 0.8-1.8 parts of Gordonia extract.

4. The white tea composition of claim 3, wherein, The white tea composition comprises the following components by weight: 3 parts of white tea extract, 1.5 parts of Malpighia glabra fruit extract, and 1.5 parts of Gordonia extract.

5. Use of the white tea composition according to any one of claims 1-4 in cosmetics.

6. An emulsion having a whitening and fine line reducing effect, characterized by, The emulsion comprises the white tea composition according to any one of claims 1-4.

7. The emulsion of claim 6, wherein, The emulsion further comprises a water-based moisturizer, an oil-based moisturizer, and a preservative.

8. The emulsion of claim 7, wherein, The water-based moisturizer comprises at least one of sodium hyaluronate, panthenol, 1,2-pentanediol, and glycerol glucose; and / or, the oil-based moisturizer comprises at least one of squalane, hydrogenated lecithin, and shea butter; and / or, the preservative comprises phenoxyethanol.

9. The method of claim 7 or 8, wherein the emulsion is prepared by, The method comprises the following steps: S1, adding a water-based moisturizer to water, heating to 70-75°C, stirring until uniform, to obtain phase A; S2, adding an oil-based moisturizer to water, heating to 75-80°C, stirring until dissolved, to obtain phase B; S3, adding phase B at a constant temperature of 75-80°C to phase A at a constant temperature of 70-75°C, stirring at a speed of 800-1200 rpm for 20-30 min to obtain phase C; S4, cooling phase C to 45-50°C, adding white tea extract, Malpighia glabra fruit extract, and Gordonia extract, then adding a preservative, adjusting the pH of the system to 5.5-6.5, homogenizing at 1500-2500 rpm until no clumps are formed, filtering, to obtain the emulsion.

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