Whitening composition and application thereof

Abstract

The invention relates to the field of whitening external products, in particular to a whitening composition and application thereof. The whitening composition is prepared from the following components in parts by mass: 0.5 to 2 parts of alcohol solvent, 1 to 3 parts of pomegranate peel extract, 0.5 to 2 parts of rhizoma bletillae root extract, 0.1 to 1 part of parthenocissus parviflora extract, 0.1 to 1 part of supplementary plant extract and 0.05 to 0.15 part of ellagic acid. The whitening composition provided by the invention can achieve a remarkable whitening effect more safely and mildly, can also improve the function of skin barrier, and has a plurality of advantages.

Description

Technical Field

[0001] The present application relates to the field of whitening external products, and more specifically, to a whitening composition and application thereof. Background Art

[0002] With the significant improvement of living standards in modern society, people's demand for skin care has also continued to grow, especially in the pursuit of skin whitening. As an important branch of the skin care field, whitening products have a wide variety of products on the market, aiming to meet the personalized needs of different consumers. However, despite the large number of whitening products on the market, most of them still rely on chemical ingredients as their core whitening ingredients, such as vitamin A, hydroquinone, etc.

[0003] Vitamin A and its derivatives are widely used in whitening products. They mainly achieve whitening effects by promoting the renewal and metabolism of epidermal cells and reducing the deposition of pigments in the skin. Hydroquinone is a more direct whitening ingredient that effectively blocks the formation of melanin by inhibiting the activity of tyrosinase. Although these chemical ingredients perform well in whitening effects, they are also relatively irritating. Long-term use may cause adverse reactions such as skin sensitivity, redness, and peeling, and may even damage the skin's natural barrier function and cause more serious skin problems.

[0004] Therefore, there is room for improvement. Summary of the invention

[0005] In order to solve the above problems and achieve a significant whitening effect in a safer and gentler manner, the present application provides a whitening composition and its application.

[0006] In the first aspect, the present application provides a whitening composition, which adopts the following technical solution: A whitening composition comprises the following components in parts by mass: 0.5-2 parts of alcohol solvent, 1-3 parts of pomegranate peel extract, 0.5-2 parts of bletilla striata root extract, 0.1-1 parts of feverfew extract, 0.1-1 parts of supplementary plant extract, and 0.05-0.15 parts of ellagic acid.

[0007] Preferably, in terms of weight percentage, the pomegranate peel extract is 1.2-2 parts, the bletilla striata root extract is 0.8-1.3 parts, and the feverfew extract is 0.1-0.5 parts.

[0008] By adopting the above technical scheme, the present application, under the joint cooperation of pomegranate peel extract, white schizonepeta root extract and feverfew extract, the contained active ingredients can effectively inhibit the generation of melanin, promote the metabolism of melanin, and make the skin brighter and more uniform. And substances such as polysaccharides can form a protective film on the skin surface, which can not only lock moisture, keep the skin moist and elastic, but also maintain the moisture balance of the skin, making the skin softer and smoother. This protective film can also effectively block the invasion of harmful substances from the outside world, further strengthening the function of the skin barrier. The cooperation of pomegranate peel extract, white schizonepeta root extract and feverfew extract not only helps to slow down skin aging, but also virtually enhances the stability of the skin barrier, providing a good absorption environment for subsequent skin care ingredients.

[0009] It can also give full play to the rich antioxidant ingredients such as polyphenols and vitamin C contained in the pomegranate peel extract, penetrate deep into the bottom layer of the skin, effectively neutralize free radicals, and reduce skin oxidative damage caused by external factors such as ultraviolet rays and environmental pollution. The active ingredients such as polysaccharides, saponins and vitamins in the root extract of Bletilla striata can not only whiten the skin, but also show a strong barrier repair ability. These ingredients can penetrate deep into the skin, inhibit the synthesis and deposition of melanin, promote skin metabolism, and accelerate the metabolism and excretion of melanin. The diterpene lactone compounds, volatile oils and flavonoid compounds in the feverfew extract can not only quickly relieve skin sensitivity symptoms, reduce skin inflammation, and create favorable conditions for skin barrier repair, but also further consolidate the stability of the skin barrier through its soothing and whitening effects.

[0010] The present application also adds ellagic acid. Ellagic acid is derived from pomegranate fruit, a natural polyphenol antioxidant molecule that can reduce various intermediates in the synthesis of melanin, thereby blocking the formation of melanin and helping to improve the effect of the whitening composition. In addition, ellagic acid does not cause skin sensitivity, redness and peeling, so it is milder than vitamin A and hydroquinone.

[0011] The whitening composition provided in this application uses specially selected plant extracts as the main whitening ingredients, which are more natural, gentle, and less irritating to the skin. In addition, the special combination of pomegranate peel extract, white radix root extract, and feverfew extract also has the function of repairing and strengthening the skin barrier, further improving the skin quality. In the face of damage and tanning caused to the skin after sun exposure, the toughness of the skin barrier can more effectively resist the stimulation of external harmful substances such as ultraviolet rays and pollutants, and reduce the production of melanin from the source; and the tough skin barrier also helps to better absorb active substances to play a whitening role. Thereby forming a good whitening cycle and improving the whitening effect.

[0012] Preferably, the supplementary plant extract comprises a mixture of one or more of Dendrobium officinale stem extract and Magnolia purpurogenum bud extract.

[0013] Preferably, the supplementary plant extracts are Dendrobium officinale stem extract and Magnolia purpurogenum flower bud extract; in terms of mass fraction, the Dendrobium officinale stem extract is 0.3-0.8 parts, and the Magnolia purpurogenum flower bud extract is 0.1-0.5 parts.

[0014] By adopting the above technical scheme, the supplementary plant extracts are further limited to Dendrobium officinale stem extract and Magnolia purpurogenum flower bud extract. The use of both can not only enhance the skin's antioxidant capacity, but also effectively inhibit the production of melanin, making the skin whitening effect more significant.

[0015] Preferably, in terms of weight parts, the pomegranate peel extract is 1.5 parts, the bletilla striata root extract is 1 part, the feverfew extract is 0.2 parts, the dendrobium officinale stem extract is 0.5 parts, and the purple magnolia bud extract is 0.2 parts.

[0016] In a second aspect, the present application provides a method for preparing a whitening composition, using the following technical solution: A method for preparing a whitening composition comprises the following steps: mixing raw materials until they are uniform to obtain the whitening composition.

[0017] In a third aspect, the present application provides a whitening composition for use in cosmetics, using the following technical solution: a whitening composition is used in cosmetics, and the amount of the whitening composition is 1-10% according to the mass percentage of the cosmetics.

[0018] By adopting the above technical solution, the main substance of the whitening composition is a specially selected plant extract, which has little harm to the skin and has a significant whitening effect. Therefore, even if the dosage is 1%, the whitening effect is relatively good; even if the dosage is 10%, such a large amount will not damage the skin.

[0019] Preferably, the cosmetic is a skin softener, and comprises the following components according to the mass percentage of the skin softener: 10-20% moisturizer, 0.1-0.5% thickener, 0.5-2% skin conditioner, 0.1-1% preservative, 1-10% whitening composition, and water.

[0020] The whitening composition provided in the present application has strong compatibility with other formulas, has low requirements on the formula, can be applied to a variety of formulas, and can play a good role in whitening and repairing the skin barrier.

[0021] In summary, this application has the following beneficial effects: 1. It uses natural plant ingredients such as pomegranate peel extract, white ginseng root extract, and feverfew extract. These extracts are rich in active ingredients and can effectively inhibit the production of melanin and promote the metabolism of melanin, making the skin brighter and more even. At the same time, these ingredients also have excellent moisturizing effects, jointly maintaining the moisture balance of the skin and making the skin soft and smooth.

[0022] 2. The main active ingredients in the whitening composition are plant extracts, which are derived from nature and have little irritation to the skin. Even when used at high concentrations, they will not cause damage to the skin, truly achieving the perfect combination of high-efficiency whitening and gentle skin care.

[0023] 3. The whitening composition not only focuses on the whitening effect, but also forms a protective film on the skin surface through polysaccharides and other substances, effectively blocking the invasion of harmful substances from the outside world and strengthening the function of the skin barrier. At the same time, the special combination of pomegranate peel extract, Bletilla striata root extract, and feverfew extract also shows a strong barrier repair ability, which can penetrate deep into the skin, inhibit the synthesis and deposition of melanin, promote skin metabolism, and further consolidate the stability of the skin barrier.

[0024] 4. When facing problems such as skin damage and tanning after sun exposure, the whitening composition can also more effectively resist the stimulation of external harmful substances such as ultraviolet rays and pollutants, reduce the production of melanin from the source, and enhance the absorption effect of subsequent skin care ingredients. DETAILED DESCRIPTION

[0025] The present application is further described in detail below with reference to the embodiments.

[0026] The raw materials used in the following examples and comparative examples are all commercially available products.

[0027] The following are some sources of raw materials: Leukocyte extracts were purchased from Guangzhou Ruiran Biotechnology Co., Ltd.

[0028] Dendrobium officinale stem extract was purchased from Bozhou Xier Chinese Herbal Medicine Co., Ltd.

[0029] Bletilla striata root extract was purchased from Bozhou Xier Chinese Herbal Medicine Co., Ltd.

[0030] Ellagic acid was purchased from Aiximei (Zhuhai).

[0031] Pomegranate (PUNICAGRANATUM) peel extract was purchased from Aiximei (Zhuhai).

[0032] Feverfew (CHRYSANTHEMUMPARTHENIUM) extract was purchased from Guangzhou Baoyi Biotechnology Co., Ltd.

[0033] Magnolia liliflora bud extract was purchased from Guangzhou Baoyi Biotechnology Co., Ltd.

[0034] Zein was purchased from Guangzhou Baoyi Biotechnology Co., Ltd.

[0035] Amino acid moisturizer was purchased from Yaxi Pharmaceutical. Example

[0036] Example 1 A whitening composition comprises the following components: an alcohol solvent, a pomegranate peel extract, a bletilla striata root extract, a feverfew extract, a supplementary plant extract, and ellagic acid.

[0037] The alcohol solvent is 1,2-hexanediol.

[0038] The supplementary plant extracts are Dendrobium officinale stem extract and Magnolia purpurogenum flower bud extract.

[0039] The specific amount of each raw material is shown in Table 1.

[0040] This embodiment also provides a method for preparing a whitening composition, comprising the following steps: mixing all raw materials until uniform to obtain a whitening composition.

[0041] Example 2 A whitening composition, which is different from Example 1 in that the specific amounts of the raw materials are different, see Table 1 for details.

[0042] Example 3 A whitening composition, which is different from Example 1 in that the specific amounts of the raw materials are different, see Table 1 for details.

[0043] Example 4 A whitening composition, which is different from Example 1 in that the supplementary plant extract is omitted.

[0044] The specific amounts of the remaining raw materials are also different, see Table 1 for details.

[0045] Example 5 A whitening composition, which is different from Example 1 in that the supplementary plant extract is omitted.

[0046] The specific amounts of the remaining raw materials are also different, see Table 1 for details.

[0047] Table 1 Comparative Example Comparative Example 1 A whitening composition, which is different from Example 1 in that the pomegranate peel extract is replaced with Guangxi mandarin orange peel extract.

[0048] CITRUS NOBILIS peel extract was commercially available from Shenzhen Ruijit Biotechnology Co., Ltd.

[0049] Comparative Example 2 A whitening composition, which is different from Example 1 in that the Bletilla striata root extract is replaced by the Centella asiatica extract.

[0050] Centella asiatica extract was commercially available from Shanyang Lianfeng Biotechnology Co., Ltd.

[0051] Comparative Example 3 A whitening composition, which is different from Example 1 in that the feverfew extract is replaced by a matricaria extract.

[0052] Chamomile (CHAMOMILLA RECUTITA) flower extract was commercially available from Lanzhou Waterless Biotechnology Co., Ltd.

[0053] Comparative Example 4 A whitening composition, which is different from Example 1 in that the Bletilla striata root extract and the feverfew extract are replaced with pomegranate peel extract.

[0054] Application Examples Application Example 1 A whitening composition is used in cosmetics, and the cosmetics are specifically skin softening water.

[0055] Skin softener includes the following components: moisturizer, thickener, skin conditioning agent, preservative, whitening composition, water.

[0056] The specific amount of each raw material is shown in Table 2.

[0057] The moisturizers are glycerin, butylene glycol, and amino acid moisturizer.

[0058] The thickener is xanthan gum.

[0059] Skin conditioning agents are leukocyte extract and zein.

[0060] The preservative is p-hydroxyacetophenone.

[0061] The whitening composition used is the whitening composition of Example 1.

[0062] The preparation method of the skin softener comprises the following steps: Step 1: Add water, glycerin, butylene glycol, xanthan gum, p-hydroxyacetophenone and amino acid moisturizer into an emulsifying pot, heat to 85°C, homogenize and disperse evenly, and then cool down.

[0063] Step 2: Cool the emulsifier to 35°C, add the whitening composition and zein leukocyte extract into the emulsifier while stirring, and stir to dissolve evenly.

[0064] Step 3: After the material in the emulsifier is tested and qualified, filter out the material to obtain the softening water.

[0065] Application Example 2 A whitening composition is used in cosmetics. The difference from Application Example 1 is that the whitening composition adopts the whitening composition of Example 2.

[0066] The specific dosage is shown in Table 2.

[0067] Application Example 3 A whitening composition is used in cosmetics. The difference from Application Example 1 is that the whitening composition adopts the whitening composition of Example 3.

[0068] The specific dosage is shown in Table 2.

[0069] Application Example 4 A whitening composition is used in cosmetics, which is different from Application Example 1 in that the specific amounts of the raw materials are different, and the whitening composition adopts the whitening composition of Example 4.

[0070] The specific dosage is shown in Table 2.

[0071] Application Example 5 A whitening composition is used in cosmetics, which is different from Application Example 1 in that the specific amounts of the raw materials are different, and the whitening composition adopts the whitening composition of Example 5.

[0072] The specific dosage is shown in Table 2.

[0073] Table 2 Application Example 6 A whitening composition is used in cosmetics, which is different from Application Example 1 in that the whitening composition adopts the whitening composition of Comparative Example 1.

[0074] Application Example 7 A whitening composition is used in cosmetics. The difference from Application Example 1 is that the whitening composition adopts the whitening composition of Comparative Example 2.

[0075] Application Example 8 A whitening composition is used in cosmetics. The difference from Application Example 1 is that the whitening composition adopts the whitening composition of Comparative Example 3.

[0076] Application Example 9 A whitening composition is used in cosmetics. The difference from Application Example 1 is that the whitening composition adopts the whitening composition of Comparative Example 4.

[0077] Performance testing 1. Efficacy test: 90 volunteers who self-tested as having sensitive skin were selected and randomly divided into 9 groups, with 10 people in each group, and each group corresponded to a skin softener in Application Examples 1-9.

[0078] After cleansing your face with water every morning and evening, apply the softener to your face and gently massage until absorbed. Continue for 28 days.

[0079] 1. Whitening: Before starting the test, cleanse your face with clean water, and then use a skin colorimeter to measure the volunteer's initial ITA° value.

[0080] After using the softening water for 28 days, the volunteers cleansed their faces with water again, and then used a skin colorimeter to measure the ITA° value of the volunteers at 28 days.

[0081] The larger the ITA° value, the lighter the skin color; conversely, the darker the skin color.

[0082] The whitening improvement rate was calculated according to the following formula, and the average whitening improvement rate of the volunteers in the same group was taken as the result of the group and recorded in Table 3.

[0083] 2. Skin barrier: On the first day, before volunteers used lotion, they waited for 20 minutes at a temperature of 21±1°C and a humidity of 50±10%. Then, a transepidermal water loss meter was used to measure the transepidermal water loss rate of the face. This was the initial value.

[0084] After using the softening lotion for 28 days, wait for 20 minutes at a temperature of 21±1℃ and a humidity of 50±10%, and measure the transepidermal water loss rate of the face. This is the test value.

[0085] The percutaneous water loss reduction rate was calculated according to the following formula, and the average value of the percutaneous water loss reduction rate of the volunteers in the same group was taken as the result of the group and recorded in Table 3.

[0086] Table 3 The skin softener of application examples 6-9 uses any whitening composition obtained by replacing pomegranate peel extract, bletilla root extract, and feverfew extract with other plant extracts. According to the test data in Table 3, the whitening improvement rate of the skin softener of application examples 6-9 is 6-13%, and the transepidermal water loss reduction rate is between 10-15%. The whitening improvement rate of the skin softener of application example 1 is 16.5%, and the transepidermal water loss reduction rate is 23.6%. Comparison of the data of application examples 1 and application examples 6-9 shows that application example 1 has a more significant improvement effect in whitening, and can also more effectively toughen the skin barrier. It is worth noting that although Centella asiatica extract is a plant extract with good whitening effect, the use of Centella asiatica extract cannot achieve the synergistic effect of the special combination of pomegranate peel extract, bletilla root extract, and feverfew extract, and cannot have the effect of significant whitening and improving the skin barrier. It shows that after destroying the special combination of pomegranate peel extract, bletilla root extract, and feverfew extract, the special synergistic coordination cannot be exerted, and it cannot play a significant role.

[0087] The whitening composition used in the skin softener of Application Examples 4-5 omits the Dendrobium officinale stem extract and the Magnolia violet bud extract. According to the test data in Table 3, Application Example 1 contains the Dendrobium officinale stem extract and the Magnolia violet bud extract, and the effect on whitening and skin barrier is more significant.

[0088] 2. Irritation test: 1. Test substance: the skin softener in Application Example 1-9.

[0089] 2. Volunteers: 100 volunteers who self-tested for sensitive skin were randomly divided into groups.

[0090] 3. Test method: A closed test method was used. The test substance was placed in a suitable patch tester and applied to the curved side of the subject's arm with a low-allergenic tape. The test substance was gently pressed with the palm of the hand to evenly apply it to the skin for 24 hours. The blank control group consisted of subjects who did not use the product.

[0091] Remove the test device, observe the skin reaction after 24 hours, and record the reaction results.

[0092] The levels of adverse skin reactions are shown in Table 4, and the test results are shown in Table 5.

[0093] Table 4 Table 5 According to the test data in Table 5, the whitening composition provided in the present application will not cause adverse reactions to sensitive skin when applied to cosmetics, indicating that it is very gentle and safe.

[0094] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A whitening composition, characterized in that: The invention comprises the following components in parts by mass: 0.5-2 parts of alcohol solvent, 1-3 parts of pomegranate peel extract, 0.5-2 parts of bletilla striata root extract, 0.1-1 parts of feverfew extract, 0.1-1 parts of supplementary plant extract, and 0.05-0.15 parts of ellagic acid.

2. The whitening composition according to claim 1, characterized in that: In terms of weight, the pomegranate peel extract is 1.2-2 parts, the bletilla striata root extract is 0.8-1.3 parts, and the feverfew extract is 0.1-0.5 parts.

3. The whitening composition according to claim 1, characterized in that: The supplementary plant extract comprises a mixture of one or more of a Dendrobium officinale stem extract and a Magnolia purpurogenum bud extract.

4. The whitening composition according to claim 3, characterized in that: The supplementary plant extracts are Dendrobium officinale stem extract and Magnolia purpurogenum flower bud extract; in terms of weight, the Dendrobium officinale stem extract is 0.3-0.8 parts, and the Magnolia purpurogenum flower bud extract is 0.1-0.5 parts.

5. The whitening composition according to claim 4, characterized in that: In terms of weight, the pomegranate peel extract is 1.5 parts, the bletilla striata root extract is 1 part, the feverfew extract is 0.2 parts, the dendrobium officinale stem extract is 0.5 parts, and the purple magnolia bud extract is 0.2 parts.

6. A method for preparing the whitening composition according to any one of claims 1 to 5, characterized in that: The following steps are involved: The raw materials are mixed until uniform to obtain a whitening composition.

7. A whitening composition according to any one of claims 1 to 5 used in cosmetics, characterized in that: According to the mass percentage of the cosmetics, the amount of the whitening composition is 1-10%.

8. The whitening composition according to claim 7 is used in cosmetics, characterized in that: The cosmetic is a skin softener, and comprises the following components according to the mass percentage of the skin softener: 10-20% moisturizer, 0.1-0.5% thickener, 0.5-2% skin conditioner, 0.1-1% preservative, 1-10% whitening composition, and water.

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