Whitening composition as well as preparation method and application thereof

Abstract

The invention relates to the field of cosmetics, in particular to a whitening composition as well as a preparation method and application thereof. The whitening composition is prepared from the following components in percentage by mass: 0.1 to 1 percent of kava pepper leaf / root / stem extract, 0.5 to 2 percent of pelargonium graveolens flower / leaf / stem extract, 0.1 to 1 percent of terminalia chinensis fruit extract, a solvent and 0.1 to 3 percent of an auxiliary agent. The invention provides a whitening composition as well as a preparation method and application thereof, and aims to develop a whitening composition with a better effect by scientifically proportioning a plurality of natural plant extracts and functional components so as to meet diversified requirements of consumers on whitening products and promote further development and application of the whitening products.

Description

Technical Field

[0001] The present application relates to the field of cosmetics, and more specifically, to a whitening composition, a preparation method thereof, and an application thereof. Background Art

[0002] In the cosmetics industry, whitening products have always been a hot topic for consumers. With the improvement of people's living standards and the change of aesthetic concepts, the demand for whitening products is growing, and the requirements for the safety and effectiveness of products are getting higher and higher. However, there are many shortcomings in the whitening products on the market, such as insignificant whitening effect, long use cycle, easy to cause skin allergies, etc. These problems limit the further development and application of whitening products.

[0003] Traditional whitening products mostly rely on physical covering or chemical bleaching. Although these methods can achieve whitening effects in a short period of time, they are often accompanied by side effects such as skin irritation and dryness. Long-term use may also cause damage to the skin. In recent years, with the advancement of science and technology, more and more research has begun to focus on the application of natural plant extracts in the field of whitening. These natural ingredients not only have whitening effects, but also can improve skin texture and improve skin health, so they are very popular.

[0004] However, the whitening effect of a single ingredient is often limited, so it is particularly important to develop a whitening composition with synergistic effects of multiple ingredients. Summary of the invention

[0005] In order to solve the above problems, the present application provides a whitening composition, a preparation method thereof and an application thereof, aiming to develop a whitening composition with better effect by scientifically matching a variety of natural plant extracts and functional ingredients, so as to meet the diversified needs of consumers for whitening products and promote the further development and application of whitening products.

[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 by mass percentage: 0.1-1% of Piper methysticum leaf / root / stem extract, 0.5-2% of Pelargonium graveolens flower / leaf / stem extract, 0.1-1% of Terminalia fathy fruit extract, a solvent, and 0.1-3% of an auxiliary agent.

[0007] By adopting the above technical solution, the geranium flower / leaf / stem extract, kava leaf / root / stem extract, and Terminalia fadyensis fruit extract work synergistically to improve uneven skin tone, dullness, and other problems in multiple dimensions. Geranium flower / leaf / stem extract and Terminalia fadyensis fruit extract achieve whitening and brightening by reducing melanin production and promoting skin metabolism; while kava flower extract, through its penetration-promoting effect, helps whitening ingredients such as geranium flower / leaf / stem extract and Terminalia fadyensis fruit extract to act more deeply on the skin.

[0008] In addition, the antibacterial and anti-inflammatory effects of geranium extract can reduce skin inflammation, the antioxidant effect of Terminalia tatarica extract can remove free radicals and prevent skin aging, and the antioxidant and anti-aging abilities of kava extract further consolidate this effect. The three work together to comprehensively improve the health of the skin and provide a solid foundation for whitening.

[0009] Pelargonium graveolens flower / leaf / stem extract, Kava pepper leaf / root / stem extract, Terminalia tataricus fruit extract are all from natural plants and have high safety and applicability. Their synergistic effect not only enhances the whitening effect, but also reduces the side effects that may be caused by a single ingredient, making the whitening combination more gentle and safe, suitable for a variety of skin types.

[0010] Preferably, according to the mass percentage of the whitening composition, the Piper mesona leaf / root / stem extract is 0.3%, the Pelargonium graveolens flower / leaf / stem extract is 1.05%, and the Terminalia tataricus fruit extract is 0.12%.

[0011] Preferably, the solvent includes butanediol, glycerol, 1,2-hexanediol, and water.

[0012] Preferably, according to the mass percentage of the whitening composition, the butylene glycol is 5-10%, the glycerol is 5-10%, and the 1,2-hexanediol is 0.1-1%.

[0013] By adopting the above technical scheme, the dosage and coordination relationship of Pelargonium graveolens flower / leaf / stem extract, Kava pepper leaf / root / stem extract, Terminalia tataricus fruit extract and solvent in the system is further limited, which can have a better mixing effect and skin feel during use, thereby giving full play to the coordination effect of the three.

[0014] Preferably, the adjuvant comprises an antioxidant.

[0015] Preferably, the antioxidant comprises p-hydroxyacetophenone and ergothioneine. According to the mass percentage of the whitening composition, p-hydroxyacetophenone is 0.1-0.5%, and ergothioneine is 0.1-2%.

[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: Step 1: Prepare the Pelargonium graveolens flower / leaf / stem extract: Step 1a: washing and cutting the flowers, leaves and stems of geranium, mixing them with water, and crushing them into a paste to obtain a pre-treated product; Step 1b: adding bronze micromonospora and olive candida to the pre-treated product at 25-30° C., stirring until uniform, and then standing for 1-2 days to obtain an intermediate treated product; the mass ratio of bronze micromonospora, olive candida to geranium flowers, leaves and stems is (0.0005-0.001): (0.0005-0.001): 1, based on the mass of geranium flowers, leaves and stems; Step 1c: freeze-drying the intermediate product in vacuo, mixing the obtained solid product with an organic extractant until uniform; centrifuging in a water bath, and distilling the organic solvent layer obtained by centrifugation under reduced pressure to obtain a pelargonium flower / leaf / stem extract; Step 2: Mix the raw materials until uniform to obtain a whitening composition.

[0017] By adopting the above technical solution, using Bronze Micromonospora and Olive Candida to treat the flowers, leaves and stems of Geranium, the cell walls and cell membranes of Geranium can be more efficiently and fully decomposed, thereby releasing more effective ingredients. This not only shortens the extraction time and reduces energy consumption, but also improves the purity and quality of the Geranium flower / leaf / stem extract. In addition, Bronze Micromonospora and Olive Candida can also biotransform some components in the Geranium flower / leaf / stem to generate new compounds with higher biological activity, enhance the overall efficacy of the extract, and make it more stable.

[0018] The specially extracted geranium flower / leaf / stem extract can show stronger permeability and whitening effect when it works in synergy with natural ingredients such as kava leaf, root, stem extract and terminalia fadi fruit extract. As a result, the whitening composition can penetrate deeper into the skin more quickly, effectively inhibit the formation of melanin, reduce spots, and make the skin more even and bright. It can also promote skin metabolism, improve skin quality, and provide comprehensive whitening and maintenance for the skin.

[0019] Preferably, in step 1a, the mass ratio of the Pelargonium odoratissimum flowers, leaves and stems to water is 1:(2-4), based on the mass of the Pelargonium odoratissimum flowers, leaves and stems.

[0020] Preferably, the mass ratio of Micromonospora bronze, Candida olive to the flowers, leaves and stems of Pelargonium odoratissimum is 0.0008:0.0008:1, based on the mass of the flowers, leaves and stems of Pelargonium odoratissimum.

[0021] In a third aspect, the present application provides an application of a whitening composition in cosmetics, using the following technical solution: Preferably, the whitening composition is added in an amount of 0.01-10% in the cosmetics.

[0022] In summary, this application has the following beneficial effects: 1. Since the present application adopts geranium flower / leaf / stem extract, kava pepper leaf / root / stem extract, and terminalia fadi fruit extract, under the synergistic effect of the three, they can quickly penetrate and act on the skin, which can reduce melanin production and promote skin metabolism, achieving whitening and brightening.

[0023] 2. Geranium flower / leaf / stem extract, Kava leaf / root / stem extract, Terminalia tatarica fruit extract are all from natural plants and have high safety and applicability. Their synergistic effect not only enhances the whitening effect, but also reduces the side effects that may be caused by a single ingredient, making the whitening combination more gentle and safe, suitable for a variety of skin types.

[0024] 3. Using Micromonospora bronze and Candida olive to treat the flowers, leaves and stems of geranium can more efficiently and fully decompose the cell walls and cell membranes of geranium, thereby releasing more effective ingredients; the synergistic effect between the specially prepared geranium flower / leaf / stem extract and the Kava Piper melongena leaf, root, stem extract and Terminalia fadi fruit extract can be more fully exerted, thereby further enhancing the whitening effect. 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. Example

[0027] Example 1 A whitening composition comprises the following components: kava leaf / root / stem extract, geranium flower / leaf / stem extract, terminalia fadyensis fruit extract, solvent and auxiliary agent.

[0028] Kava Piper melongena leaf / root / stem extract was commercially available from Guangzhou Kefan Cosmetics Co., Ltd.

[0029] Terminalia tataricus fruit extract is commercially available from Lucas Meyer Cosmetics.

[0030] The pelargonium officinale flower / leaf / stem extract is homemade.

[0031] Solvents include butylene glycol, glycerol, 1,2-hexanediol and water.

[0032] The auxiliary agent is an antioxidant, specifically including p-hydroxyacetophenone and ergothioneine.

[0033] The contents of various raw materials are shown in Table 1.

[0034] The present application also provides a method for preparing a whitening composition, comprising the following steps: Step 1: Prepare the Pelargonium graveolens flower / leaf / stem extract: Step 1a: Wash the geranium flowers, leaves and stems in clean water and dry them. Then cut the geranium flowers, leaves and stems.

[0035] The cut flowers, leaves and stems of Pelargonium graveolens were mixed with water at a mass ratio of 1:3 (based on the mass of the flowers, leaves and stems of Pelargonium graveolens), and crushed into a paste to obtain a pretreated material.

[0036] Step 1b: Prepare bronze micromonospora and olive candida according to the mass ratio of bronze micromonospora, olive candida and geranium flowers, leaves and stems of 0.0008:0.0008:1. The mass of geranium flowers, leaves and stems is used as the basis.

[0037] Under the condition of 28°C, Micromonospora bronzii and Candida olivolucrata were added to the pretreated material and stirred until uniform.

[0038] The mixture was allowed to stand for 1.5 days to obtain an intermediate processed product.

[0039] Step 1c: The intermediate product is freeze-dried in vacuo, and the obtained solid product is mixed with an organic extractant (ethanol) until uniform, placed in a water bath at 80° C. for 4 hours and centrifuged. The organic solvent layer obtained by centrifugation is then subjected to reduced pressure distillation to obtain a pelargonium flower / leaf / stem extract.

[0040] Step 2: Mix various raw materials and stir until uniform to obtain a whitening composition.

[0041] Micromonospora bronzii was purchased from Beijing Bio-Bowei Biotechnology Co., Ltd. under the platform number Bio-17482.

[0042] Candida oliveri is commercially available from China Industrial Microbiological Culture Collection Center with strain number CICC31860.

[0043] Example 2 A whitening composition, which is different from Example 1 in that the specific content of each raw material is different, see Table 1 for details.

[0044] A method for preparing a whitening composition, which is different from that of Example 1, comprises the following steps: Step 1: Prepare the Pelargonium graveolens flower / leaf / stem extract: Step 1a: Wash the geranium flowers, leaves and stems in clean water and dry them. Then cut the geranium flowers, leaves and stems.

[0045] The cut geranium flowers, leaves and stems were mixed with water at a mass ratio of 1:2 and crushed into a paste to obtain a pretreated material.

[0046] Step 1b: Prepare bronze micromonospora and olive candida according to the mass ratio of bronze micromonospora, olive candida and geranium flowers, leaves and stems of 0.0005:0.0005:1. The mass of geranium flowers, leaves and stems is used as the basis.

[0047] Under the condition of 25°C, Micromonospora bronzii and Candida olivolucrata were added to the pretreated material and stirred until uniform.

[0048] The mixture was allowed to stand for 2 days to obtain an intermediate product.

[0049] Step 1c: The intermediate product is freeze-dried in vacuo, and the obtained solid product is mixed with an organic extractant (ethanol) until uniform, placed in a water bath at 80° C. for 4 hours and centrifuged. The organic solvent layer obtained by centrifugation is then subjected to reduced pressure distillation to obtain a pelargonium flower / leaf / stem extract.

[0050] Step 2: Mix various raw materials and stir until uniform to obtain a whitening composition.

[0051] Micromonospora bronzii was purchased from Beijing Bio-Bowei Biotechnology Co., Ltd. under the platform number Bio-17482.

[0052] Candida oliveri is commercially available from China Industrial Microbiological Culture Collection Center with strain number CICC31860.

[0053] Example 3 A whitening composition, which is different from Example 1 in that the specific content of each raw material is different, see Table 1 for details.

[0054] A method for preparing a whitening composition, which is different from that of Example 1, comprises the following steps: Step 1: Prepare the Pelargonium graveolens flower / leaf / stem extract: Step 1a: Wash the geranium flowers, leaves and stems in clean water and dry them. Then cut the geranium flowers, leaves and stems.

[0055] The cut geranium flowers, leaves and stems were mixed with water at a mass ratio of 1:4 and crushed into a paste to obtain a pretreated material.

[0056] Step 1b: Prepare bronze micromonospora and olive candida according to the mass ratio of bronze micromonospora, olive candida and geranium flowers, leaves and stems of 0.001:0.001:1. The mass of geranium flowers, leaves and stems is used as the basis.

[0057] Under the condition of 30°C, Micromonospora bronzii and Candida olivolucrata were added to the pretreated material and stirred until uniform.

[0058] The mixture was allowed to stand for 1 day to obtain an intermediate processed product.

[0059] Step 1c: The intermediate product is freeze-dried in vacuo, and the obtained solid product is mixed with an organic extractant (ethanol) until uniform, placed in a water bath at 80° C. for 4 hours and centrifuged. The organic solvent layer obtained by centrifugation is then subjected to reduced pressure distillation to obtain a pelargonium flower / leaf / stem extract.

[0060] Step 2: Mix various raw materials and stir until uniform to obtain a whitening composition.

[0061] Micromonospora bronzii was purchased from Beijing Bio-Bowei Biotechnology Co., Ltd. under the platform number Bio-17482.

[0062] Candida oliveri is commercially available from China Industrial Microbiological Culture Collection Center with strain number CICC31860.

[0063] Table 1 Comparative Example Comparative Example 1 A whitening composition, which is different from Example 1 in that the Piper methysticum leaf / root / stem extract is replaced by Centella asiatica extract.

[0064] Centella asiatica extract was commercially available from Shanyang Lianfeng Biotechnology Co., Ltd.

[0065] Comparative Example 2 A whitening composition, which is different from Example 1 in that the Terminalia tataricus fruit extract is replaced by a Matricaria chamomilla extract.

[0066] Chamomile flower extract was commercially available from Lanzhou Waterless Biotechnology Co., Ltd.

[0067] Comparative Example 3 A whitening composition, which is different from Example 1 in that the pelargonium flower / leaf / stem extract is replaced by grape seed extract.

[0068] Grape seed extract was commercially available from Shaanxi Yuanbeibei Biotechnology Co., Ltd.

[0069] Comparative Example 4 A method for preparing a whitening composition, which is different from that of Example 1, comprises the following steps: Step 1: Prepare the Pelargonium graveolens flower / leaf / stem extract: Step 1a: Wash the geranium flowers, leaves and stems in clean water and dry them. Then cut the geranium flowers, leaves and stems.

[0070] The cut geranium flowers, leaves and stems were mixed with water at a mass ratio of 1:3 and crushed into a paste to obtain a pretreated material.

[0071] Step 1b: Prepare the bronze micromonospora according to the mass ratio of bronze micromonospora to the flowers, leaves and stems of geranium at 0.0016:1. The mass of the flowers, leaves and stems of geranium is used as the basis.

[0072] Under the condition of 28°C, Micromonospora bronzii was added to the pretreated material and stirred until uniform.

[0073] The mixture was allowed to stand for 1.5 days to obtain an intermediate processed product.

[0074] Step 1c: The intermediate product is freeze-dried in vacuo, and the obtained solid product is mixed with an organic extractant (ethanol) until uniform, placed in a water bath at 80° C. for 4 hours and centrifuged. The organic solvent layer obtained by centrifugation is then subjected to reduced pressure distillation to obtain a pelargonium flower / leaf / stem extract.

[0075] Step 2: Mix various raw materials and stir until uniform to obtain a whitening composition.

[0076] Micromonospora bronzii was purchased from Beijing Bio-Bowei Biotechnology Co., Ltd. under the platform number Bio-17482.

[0077] Comparative Example 5 A method for preparing a whitening composition, which is different from that of Example 1, comprises the following steps: Step 1: Prepare the Pelargonium graveolens flower / leaf / stem extract: Step 1a: Wash the geranium flowers, leaves and stems in clean water and dry them. Then cut the geranium flowers, leaves and stems.

[0078] The cut geranium flowers, leaves and stems were mixed with water at a mass ratio of 1:3 and crushed into a paste to obtain a pretreated material.

[0079] Step 1b: Prepare olive Candida according to the mass ratio of olive Candida to geranium flower, leaf and stem of 0.0016:1. The mass of geranium flower, leaf and stem is used as the basis.

[0080] At 28°C, Candida olivelis was added to the pretreated material and stirred until uniform.

[0081] The mixture was allowed to stand for 1.5 days to obtain an intermediate processed product.

[0082] Step 1c: The intermediate product is freeze-dried in vacuo, and the obtained solid product is mixed with an organic extractant (ethanol) until uniform, placed in a water bath at 80° C. for 4 hours and centrifuged. The organic solvent layer obtained by centrifugation is then subjected to reduced pressure distillation to obtain a pelargonium flower / leaf / stem extract.

[0083] Step 2: Mix various raw materials and stir until uniform to obtain a whitening composition.

[0084] Candida oliveri is commercially available from China Industrial Microbiological Culture Collection Center with strain number CICC31860.

[0085] Comparative Example 6 A method for preparing a whitening composition, which is different from that of Example 1, comprises the following steps: Step 1: Prepare the Pelargonium graveolens flower / leaf / stem extract: Step 1a: Wash the geranium flowers, leaves and stems in clean water and dry them. Then cut the geranium flowers, leaves and stems.

[0086] The cut geranium flowers, leaves and stems were mixed with water at a mass ratio of 1:3 and crushed into a paste to obtain a pretreated material.

[0087] Step 1b: Prepare Micromonospora bronze and Candida olive according to the mass ratio of Micromonospora bronze, Candida olive to the flowers, leaves and stems of Pelargonium odoratum of 0.0001:0.0015:1.

[0088] Under the condition of 28°C, Micromonospora bronzii and Candida olivolucrata were added to the pretreated material and stirred until uniform.

[0089] The mixture was allowed to stand for 1.5 days to obtain an intermediate processed product.

[0090] Step 1c: The intermediate product is freeze-dried in vacuo, and the obtained solid product is mixed with an organic extractant (ethanol) until uniform, placed in a water bath at 80° C. for 4 hours and centrifuged. The organic solvent layer obtained by centrifugation is then subjected to reduced pressure distillation to obtain a pelargonium flower / leaf / stem extract.

[0091] Step 2: Mix various raw materials and stir until uniform to obtain a whitening composition.

[0092] Micromonospora bronzii was purchased from Beijing Bio-Bowei Biotechnology Co., Ltd. under the platform number Bio-17482.

[0093] Candida oliveri is commercially available from China Industrial Microbiological Culture Collection Center with strain number CICC31860.

[0094] Application Examples Application Example 1 An application of a whitening composition is used for preparing an essence water.

[0095] An essence water comprises the following components in percentage by mass: water, 5% butylene glycol, 0.1% sodium hyaluronate, 10% whitening composition, 2% glyceryl polyether-26, 0.5% 1,2-hexanediol, and 0.5% p-hydroxyacetophenone.

[0096] Make up the balance to 100% with water.

[0097] Add water, butylene glycol, sodium hyaluronate and whitening composition into the main pot and mix until uniform. Stir and heat to 82°C and keep warm for 15 minutes.

[0098] Glycerol polyether-26, 1,2-hexanediol and p-hydroxyacetophenone are uniformly mixed and completely dissolved at 80° C. to obtain a standby mixture.

[0099] After the temperature of the main pot drops to 45°C, add the reserved mixture into the main pot while stirring and stir until uniform.

[0100] The temperature was continued to be lowered to 35°C, and the material was discharged to obtain essence water.

[0101] The whitening composition used in this application example is the whitening composition of Example 1.

[0102] Application Example 2 An application of a whitening composition is different from Application Example 1 in that the whitening composition used is the whitening composition of Example 2.

[0103] Application Example 3 An application of a whitening composition, which is different from Application Example 1 in that the whitening composition used is the whitening composition of Example 3.

[0104] Application Example 4 An application of a whitening composition is different from Application Example 1 in that the whitening composition used is the whitening composition of Comparative Example 1.

[0105] Application Example 5 An application of a whitening composition is different from Application Example 1 in that the whitening composition used is the whitening composition of Comparative Example 2.

[0106] Application Example 6 An application of a whitening composition is different from Application Example 1 in that the whitening composition used is the whitening composition of Comparative Example 3.

[0107] Application Example 7 An application of a whitening composition, which is different from Application Example 1 in that the whitening composition used is the whitening composition of Comparative Example 4.

[0108] Application Example 8 An application of a whitening composition is different from Application Example 1 in that the whitening composition used is the whitening composition of Comparative Example 5.

[0109] Application Example 9 An application of a whitening composition is different from Application Example 1 in that the whitening composition used is the whitening composition of Comparative Example 6.

[0110] Application Example 10 An application of a whitening composition, which is different from Application Example 1 in that the content of the whitening composition is 0.01%.

[0111] Performance testing Test 1: 90 female volunteers aged 25-30 were selected and randomly divided into 9 groups, with 10 people in each group. One group corresponds to an essence water in Application Examples 1-9.

[0112] Use clean water to cleanse the face and spray toner. After complete absorption, use a skin colorimeter to measure the ITA° value of the volunteer's face and record it in the book.

[0113] Then take 2mL of essence water and apply it evenly on the face, once in the morning and once in the evening, for 28 days.

[0114] At 14d and 28d, the ITA° values ​​of the volunteers' faces were measured again using a skin colorimeter.

[0115] Calculate the whitening improvement rate according to the following formula and record the results in Table 2.

[0116] Table 2 Category 14d whitening improvement rate (%) 28d whitening improvement rate (%) Application Example 1 10.6 14.6 Application Example 2 8.2 12.0 Application Example 3 11.3 14.9 Application Example 4 2.0 3.8 Application Example 5 1.2 2.3 Application Example 6 1.7 3.1 Application Example 7 3.3 4.6 Application Example 8 4.5 5.9 Application Example 9 5.2 6.7 Application Examples 4-6 use a whitening composition based on Example 1, wherein the Pelargonium graveolens flower / leaf / stem extract, Piper methysticum leaf / root / stem extract, and Terminalia tataricus fruit extract are replaced with other plant extracts.

[0117] According to the test data in Table 2, although other plant extracts were used in Application Examples 4-6, the special combination of Pelargonium graveolens flower / leaf / stem extract, Piper methysticum leaf / root / stem extract, and Terminalia tataricus fruit extract was destroyed, so that the synergistic combination could not be fully exerted, resulting in the whitening improvement effect not being as significant as that in Application Examples 1-3.

[0118] This shows that the special combination of geranium flower / leaf / stem extract, kava leaf / root / stem extract and terminalia fagioli fruit extract needs to be strictly limited in order to achieve a good whitening and improvement effect.

[0119] Application Examples 7-9 are based on Example 1, so that Micromonospora bronze and Candida oleifera cannot be used together to treat the flowers, leaves and stems of Pelargonium odoratum under a specific ratio. According to the test data in Table 2, the improvement of the whitening effect of Application Examples 7-9 is obviously not as good as that of Application Examples 1-3.

[0120] This indicates that the preparation method and raw materials of the pelargonium officinale flower, leaf and stem extracts need to be further limited in order to give full play to the special combination with the kava leaf / root / stem extract and the terminalia fagioli fruit extract.

[0121] Test 2: A questionnaire was distributed to the volunteers who had taken Test 1, and they were asked to rate their usage on a scale of 0 to 10. The average score of the same group of volunteers was the result of the group, which is recorded in Table 3.

[0122] Use cases that require scoring include: (1) During the test, was the essence water absorbed quickly when applied to the face? The better the absorption effect, the closer to 10 points.

[0123] 0-3 points represent slow absorption and poor effect; 4-7 points represent average absorption and average effect; 8-10 points represent fast absorption and good effect.

[0124] (2) After completing the test, is your face noticeably whiter? The more obvious the whitening effect, the closer the score is to 10.

[0125] 0-3 points represent no obvious whitening; 4-7 points represent average whitening effect; 8-10 points represent obvious whitening.

[0126] Table 3 Category (1) (2) Application Example 1 9.3 8.9 Application Example 2 9.5 8.4 Application Example 3 8.9 9.0 Application Example 4 7.0 7.0 Application Example 5 7.8 6.2 Application Example 6 7.2 6.6 Application Example 7 7.3 7.1 Application Example 8 7.2 7.2 Application Example 9 7.5 7.5 According to the test data in Table 3, the volunteers who used the essence water in Application Examples 1-3 all believed that the essence water was absorbed quickly, had good effects, and had significant whitening effects. The volunteers who used Application Examples 4-9 generally believed that the absorption effects were average and the whitening effects were average.

[0127] 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 terms of mass percentage: 0.1-1% of Kava Piper methysticum leaf / root / stem extract, 0.5-2% of Geranium odoratum flower / leaf / stem extract, 0.1-1% of Terminalia tataricus fruit extract, solvent and 0.1-3% of auxiliary agent.

2. The whitening composition according to claim 1, characterized in that: According to the mass percentage of the whitening composition, the extract of Piper methysticum leaf / root / stem is 0.3%, the extract of Pelargonium graveolens flower / leaf / stem is 1.05%, and the extract of Terminalia tataricus fruit is 0.12%.

3. The whitening composition according to claim 1, characterized in that: The solvent includes butanediol, glycerol, 1,2-hexanediol and water.

4. The whitening composition according to claim 3, characterized in that: According to the mass percentage of the whitening composition, the butylene glycol is 5-10%, the glycerol is 5-10%, and the 1,2-hexanediol is 0.01-1%.

5. A method for preparing the whitening composition according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Prepare the Pelargonium graveolens flower / leaf / stem extract: Step 1a: washing, cutting, mixing, and crushing the flowers, leaves, and stems of geranium with water to form a paste to obtain a pre-treated product; Step 1b: adding bronze Micromonospora and olive Candida to the pretreated product at 25-30° C., stirring until uniform, and then standing for 1-2 days to obtain an intermediate treated product; the mass ratio of bronze Micromonospora, olive Candida to geranium flowers, leaves and stems is (0.0005-0.001): (0.0005-0.001): 1, based on the mass of geranium flowers, leaves and stems; Step 1c: freeze-drying the intermediate product in vacuo, mixing the obtained solid product with an organic extractant until uniform; centrifuging in a water bath, and distilling the organic solvent layer obtained by centrifugation under reduced pressure to obtain a pelargonium flower / leaf / stem extract; Step 2: Mix the raw materials until uniform to obtain a whitening composition.

6. The method for preparing the whitening composition according to claim 5, characterized in that: In the step 1a, the mass ratio of the geranium flowers, leaves and stems to water is 1:(2-4), based on the mass of the geranium flowers, leaves and stems.

7. The method for preparing the whitening composition according to claim 5, characterized in that: The mass ratio of the bronze Micromonospora, olive Candida, and the flowers, leaves, and stems of Pelargonium graveolens is 0.0008:0.0008:1, with the mass of the flowers, leaves, and stems of Pelargonium graveolens as the benchmark.

8. Use of a whitening composition prepared by the whitening composition according to any one of claims 1 to 4 or the preparation method of the whitening composition according to any one of claims 5 to 7 in cosmetics.

9. The use of the whitening composition according to claim 8, characterized in that: The whitening composition is added in an amount of 0.01-10% in cosmetics.

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