Plant extract composition with repairing, anti-wrinkle and tightening effects as well as preparation method and application thereof

Abstract

The invention discloses a plant extract composition with repairing, anti-wrinkle and tightening effects as well as a preparation method and application thereof, the plant extract composition comprises a kelp extract and a moutan bark extract, and the feeding mass ratio of the kelp extract to the moutan bark extract is 1: (0.6-1.0); during preparation, all the components are uniformly mixed according to the formula. Practice shows that the composition obtained by combining the kelp extract and the moutan bark extract according to a specific proportion can obtain surprising effects in the aspects of repairing effect, tightening effect, anti-wrinkle effect and the like, and compared with a single component, the composition is remarkable in progress and has an excellent synergistic effect; particularly, extracts from natural plants are combined, so that the composition is high in safety, relatively low in cost and beneficial to being used in cosmetics.

Description

Technical Field

[0001] This invention relates to the field of daily chemical products, specifically to a plant extract composition with repairing, anti-wrinkle, and firming effects, its preparation method, and its application. Background Technology

[0002] Modern cell biology and molecular biology research suggests that skin aging is both an inevitable part of human gene metabolism and is influenced by exogenous damage. Exogenous damage includes environmental radiation, air pollution, diet quality, and fatigue. Currently, the free radical theory is widely accepted as a method to delay skin aging. This theory states that the body's natural ability to fight free radicals declines, leading to cell aging and rougher skin. Eliminating excess free radicals in the body primarily involves antioxidant activity. Most free radicals in the body are oxygen free radicals, and antioxidants inhibit the oxidation reaction of free radicals. Reactive oxygen species (ROS) are produced during physiological metabolism. Under normal circumstances, the body has an antioxidant defense system that maintains a balance between oxidation and antioxidation, slowing down the production of ROS and free radicals. However, environmental pollutants such as ultraviolet radiation, air pollution, and chemicals stimulate the body to continuously produce free radicals. The large amount of free radicals produced reduces the skin's antioxidant defense capacity, causing skin damage and resulting in signs of aging such as dark lines, fine lines, and wrinkles.

[0003] Meanwhile, modern people are exposed to ultraviolet (UV) radiation for extended periods. UV-induced photoaging leads to increased activity of elastase in the skin. Elastase is distributed in various tissues and cells; increased elastase activity causes hydrolysis of elastic fibers in the skin, accelerating the breakdown of collagen and elastin in the dermis, resulting in loss of skin elasticity and the appearance of wrinkles and other signs of aging. Furthermore, skin elasticity is closely related to skin moisture content. When the stratum corneum is rich in moisture, skin elasticity is good; a dry stratum corneum leads to decreased skin elasticity, causing dryness, tightness, and cracking.

[0004] Currently, there is a lack of products that can simultaneously possess excellent repair, anti-wrinkle, and firming effects, especially those derived from natural plants. Summary of the Invention

[0005] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide a new plant extract composition that can simultaneously possess superior repair, anti-wrinkle and firming effects, and all components are of natural plant origin.

[0006] The present invention also provides a method for preparing the above-mentioned plant extract composition and its application in the preparation of cosmetics.

[0007] To achieve the above objectives, the present invention employs the following technical solution: A plant extract composition comprising kelp extract and peony bark extract, wherein the mass ratio of kelp extract to peony bark extract is 1:0.6-1.0.

[0008] In some embodiments of the present invention, the mass ratio of the kelp extract to the peony bark extract is 1:0.64-0.99.

[0009] According to some specific aspects of the present invention, the mass ratio of the kelp extract to the peony bark extract is 1:0.7-0.90.

[0010] According to certain specific aspects of the present invention, the numerical range "0.6-1.0" in "feed mass ratio of 1:0.6-1.0" includes, but is not limited to, 0.6, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.75, 0.76, 0.77, 0.78, 0.79, 0.80, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, etc.

[0011] In some embodiments of the present invention, based on a total weight of 100 wt.% of kelp extract and peony bark extract, the kelp extract accounts for 50 wt.%-61 wt.% and the peony bark extract accounts for 39 wt.%-50 wt.%.

[0012] Furthermore, based on a total weight of 100 wt.% for kelp extract and peony bark extract, the kelp extract accounts for 52 wt.%-58 wt.% and the peony bark extract accounts for 42 wt.%-48 wt.%.

[0013] According to certain aspects of the present invention, the numerical range "50wt.%-61wt.%" in "the kelp extract accounts for 50wt.%-61wt.%" includes, but is not limited to, 50wt.%, 50.3wt.%, 50.5wt.%, 51wt.%, 51.5wt.%, 52wt.%, 52.5wt.%, 53wt.%, 53.5wt.%, 54wt.%, 54.5wt.%, 55wt.%, 55.5wt.%, 56wt.%, 56.5wt.%, 57wt.%, 57.5wt.%, 58wt.%, 58.5wt.%, 59wt.%, 59.5wt.%, 60wt.%, 60.5wt.%, 60.8wt.%, etc.

[0014] According to certain aspects of the present invention, the numerical range "39wt.%-50wt.%" in "the peony bark extract accounts for 39wt.%-50wt.%" includes, but is not limited to, 39wt.%, 39.3wt.%, 39.5wt.%, 40wt.%, 40.5wt.%, 41wt.%, 41.5wt.%, 42wt.%, 42.5wt.%, 43wt.%, 43.5wt.%, 44wt.%, 44.5wt.%, 45wt.%, 45.5wt.%, 46wt.%, 46.5wt.%, 47wt.%, 47.5wt.%, 48wt.%, 48.5wt.%, 49wt.%, 49.5wt.%, 49.8wt.%, etc.

[0015] In some embodiments of the present invention, the kelp extract is obtained by immersing kelp in a first solvent.

[0016] In some embodiments of the present invention, the peony bark extract is obtained by extracting peony bark in a second solvent.

[0017] In some embodiments of the present invention, both the first solvent and the second solvent contain alcohol solvents or aqueous solutions thereof.

[0018] Furthermore, the alcohol solvent comprises one or more combinations of ethanol, propanol, and dipropylene glycol.

[0019] Furthermore, the extraction is carried out at 70-90℃.

[0020] In some embodiments of the present invention, the kelp extract is added in the form of a kelp extract solution, which is prepared by the following method: kelp is added to a dipropylene glycol aqueous solution and extracted at 70-90°C. After extraction, the residue is removed by filtration to obtain the kelp extract solution. Further, the mass concentration of dipropylene glycol in the dipropylene glycol aqueous solution is 25%-35%.

[0021] Furthermore, the mass ratio of the kelp to the dipropylene glycol aqueous solution is 1:8-10.

[0022] Kelp, also known as "black vegetable" or "goose foot vegetable," belongs to the class Phaeophyta and family Laminariaceae. It grows in relatively cold ocean waters, often epiphytically on rocky reefs 1-3 meters below the low tide line, and is distributed along the coast of Shandong and Liaoning provinces. Listed as aquatic plants in the Compendium of Materia Medica, it possesses medicinal value, including the ability to resolve phlegm, soften hardened masses, dissipate nodules, and promote diuresis and reduce swelling.

[0023] Moutan bark is the root of the peony, a traditional Chinese medicine, and is an important and commonly used medicinal herb. Modern pharmacological studies have shown that moutan bark has various pharmacological effects, including anti-inflammatory, anti-tumor, cardiovascular protection, liver protection, blood sugar lowering, and relief of diabetic complications. At the same time, moutan bark contains a variety of natural bioactive components, such as phenols, monoterpenes, and minerals; polysaccharides are also one of the main active components of moutan bark.

[0024] In some embodiments of the present invention, the peony bark extract is added in the form of a peony bark extract solution, which is prepared by the following method: adding peony bark to a dipropylene glycol aqueous solution and extracting at 70-90°C; after extraction, filtering to remove residue to obtain the peony bark extract solution. Further, the mass concentration of dipropylene glycol in the dipropylene glycol aqueous solution is 25%-35%.

[0025] Furthermore, the mass ratio of the peony bark to the dipropylene glycol aqueous solution is 1:8-10.

[0026] In some embodiments of the present invention, the mass concentration of kelp extract in the kelp extract solution is 1.55%-1.70%, more specifically 1.55%-1.65%.

[0027] In some embodiments of the present invention, the mass concentration of peony bark extract in the peony bark extract solution is 1.85%-2.00%, and more specifically 1.88%-1.98%.

[0028] In this invention, the mass concentration of kelp extract in the kelp extract solution and the mass concentration of peony bark extract in the peony bark extract solution can both be determined using conventional methods. For example, a halogen moisture analyzer can be used. First, the mass percentage A of the substance remaining after the solvent used in the preparation process is evaporated to dryness is measured, and then the mass percentage B of the substance remaining after the corresponding extract solution is evaporated to dryness is measured. Then, the mass concentration of the corresponding extract is C=BA.

[0029] Another technical solution provided by the present invention: a method for preparing the above-mentioned plant extract composition, the preparation method comprising: mixing kelp extract and peony bark extract according to the formula.

[0030] Another technical solution provided by the present invention: the application of the above-described plant extract composition in the preparation of cosmetics.

[0031] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: During extensive experimental research, the inventors of this invention unexpectedly discovered that a specific combination of kelp extract and peony bark extract can achieve surprising results in terms of repair, firming, and anti-wrinkle effects, demonstrating significant improvement over single-ingredient formulations and exhibiting excellent synergistic effects. In particular, this invention uses extracts from natural plants, resulting in high safety and relatively low cost, making it suitable for use in cosmetics. Attached Figure Description

[0032] Figure 1 This is a statistical chart showing the moisturizing effect test results of the samples obtained in Example 1 and Comparative Examples 1, 2, 3, 4, and 5 of the present invention. Figure 2 This is a statistical chart showing the skin elasticity (R2) effect test of the samples obtained in Example 1 and Comparative Examples 1, 2, 3, 4, and 5 of the present invention; Figure 3 This is a statistical chart showing the skin firmness (F4) effect test of the samples obtained in Example 1 and Comparative Examples 1, 2, 3, 4, and 5 of the present invention; Figure 4 This is a statistical chart showing the number of wrinkles in the anti-wrinkle test of the samples obtained in Example 1 and Comparative Examples 1, 2, 3, 4, and 5 of the present invention; Figure 5 This is a statistical chart of wrinkle volume in the anti-wrinkle test of the samples obtained in Example 1 and Comparative Examples 1, 2, 3, 4, and 5 of the present invention. Detailed Implementation

[0033] The above-mentioned solution will be further described below with reference to specific embodiments; it should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited to the scope of the following embodiments; the implementation conditions used in the embodiments can be further adjusted according to specific requirements, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0034] Unless otherwise specified in the following examples, all raw materials are commercially available or prepared by conventional methods in the art.

[0035] The kelp extract solution was prepared as follows: Kelp was cleaned and then added to a 30% dipropylene glycol solution (the mass ratio of kelp to the 30% dipropylene glycol solution was controlled to be 1:9). Extraction was carried out at a temperature of 80±10℃ for 2 hours. After extraction, the residue was removed by filtration to obtain the kelp extract solution (the mass concentration of the kelp extract was measured to be 1.60%).

[0036] The peony bark extract solution was prepared as follows: Peony bark was cleaned and then added to a 30% dipropylene glycol solution (the mass ratio of peony bark to 30% dipropylene glycol solution was controlled at 1:9). Extraction was carried out at 80±10℃ for 2 hours. After extraction, the residue was removed by filtration to obtain the peony bark extract solution (the mass concentration of the peony bark extract was measured to be 1.92%).

[0037] The lily extract solution was prepared as follows: The lily bulbs were cleaned and then added to a 30% dipropylene glycol solution (the mass ratio of lily bulbs to 30% dipropylene glycol solution was controlled at 1:9). The extraction was carried out at a temperature of 80±10℃ for 2 hours. After extraction, the residue was removed by filtration to obtain the lily extract solution (the mass concentration of the lily extract was measured to be 1.81%).

[0038] Example 1: This example provides a plant extract composition and its preparation method. The plant extract composition contains kelp extract and peony bark extract. The kelp extract is added in the form of a kelp extract solution, and the peony bark extract is added in the form of a peony bark extract solution. The formulation of the plant extract composition is shown in Table 1.

[0039] Table 1 The preparation method of the plant extract composition includes: mixing kelp extract solution and peony bark extract solution according to the formula amount to prepare the plant extract composition.

[0040] Example 2: This example provides a plant extract composition and its preparation method. The plant extract composition contains kelp extract and peony bark extract. The kelp extract is added in the form of a kelp extract solution, and the peony bark extract is added in the form of a peony bark extract solution. The formulation of the plant extract composition is shown in Table 2.

[0041] Table 2 The preparation method of the plant extract composition includes: mixing kelp extract solution and peony bark extract solution according to the formula amount to prepare the plant extract composition.

[0042] Example 3: This example provides a plant extract composition and its preparation method. The plant extract composition contains kelp extract and peony bark extract. The kelp extract is added in the form of a kelp extract solution, and the peony bark extract is added in the form of a peony bark extract solution. The formulation of the plant extract composition is shown in Table 3.

[0043] Table 3 The preparation method of the plant extract composition includes: mixing kelp extract solution and peony bark extract solution according to the formula amount to prepare the plant extract composition.

[0044] Comparative Example 1: This example provides a plant extract that uses a single kelp extract, which is added in the form of a kelp extract solution.

[0045] Comparative Example 2: This example provides a plant extract that uses a single peony bark extract, which is added in the form of a peony bark extract solution.

[0046] Comparative Example 3: This example provides a plant extract composition and its preparation method. The plant extract composition contains kelp extract and peony bark extract. The kelp extract is added in the form of a kelp extract solution, and the peony bark extract is added in the form of a peony bark extract solution. The formulation of the plant extract composition is shown in Table 4.

[0047] Table 4 The preparation method of the plant extract composition includes: mixing kelp extract solution and peony bark extract solution according to the formula amount to prepare the plant extract composition.

[0048] Comparative Example 4: This example provides a plant extract composition and its preparation method. The plant extract composition contains kelp extract and peony bark extract. The kelp extract is added in the form of a kelp extract solution, and the peony bark extract is added in the form of a peony bark extract solution. The formulation of the plant extract composition is shown in Table 5.

[0049] Table 5 The preparation method of the plant extract composition includes: mixing kelp extract solution and peony bark extract solution according to the formula amount to prepare the plant extract composition.

[0050] Comparative Example 5: This example provides a plant extract composition and its preparation method. The plant extract composition contains kelp extract and lily extract. The kelp extract is added in the form of a kelp extract solution, and the lily extract is added in the form of a lily extract solution. The formulation of the plant extract composition is shown in Table 6.

[0051] Table 6 The preparation method of the plant extract composition includes: mixing kelp extract solution and lily extract solution according to the formula amount to prepare the plant extract composition.

[0052] Performance testing: The following tests were conducted on the samples obtained in Example 1 and Comparative Examples 1-5, including repair tests, firming tests, and anti-wrinkle tests. During the tests, the samples obtained in Example 1 and Comparative Examples 1-5 were diluted with water at a ratio of 1:4 (sample:water) before testing.

[0053] I. Repair Test (1) Test method: 1) The test area (face) is placed in a constant temperature and humidity environment for 30 minutes. 2) The transepidermal water loss rate of the skin is measured before use, 7 days after use, and 14 days after use. 3) The sample is taken twice a day. Take an appropriate amount (about 2mL) in the palm of your hand and gently pat it on the whole face until absorbed.

[0054] The testing method refers to T / CAB 0152-2022 "Test Methods for Seven Efficacy Items of Cosmetics: Anti-wrinkle, Firming, Moisturizing, Oil Control, Repairing, Nourishing and Soothing"; Testing instrument: Corneometer (skin moisture content meter); Test environment: Temperature: 21±1℃; Humidity: 50±10%.

[0055] (2) Evaluation criteria: Improvement value of skin transepidermal water loss rate = skin transepidermal water loss rate before use - skin transepidermal water loss rate after use.

[0056] (3) Test results are shown in Table 7 and Figure 1 .

[0057] Table 7 (4) Analysis of test results: 1) Data analysis showed that, compared with before product use, the transepidermal water loss rate of the plant extract composition of the present invention was significantly improved and decreased after 7 days and 14 days of use, respectively, by 0.74 and 3.29, indicating that the tested product has a significant repair effect.

[0058] 2) Comparative Example 1 showed only a slight decrease in transepidermal water loss rate after 7 and 14 days of use compared to before use, decreasing by 0.02 and 0.37 respectively. The decrease values ​​were significantly lower than those of the plant extract composition of the present invention, indicating that the repair effect of Comparative Example 1 was significantly worse than that of the plant extract composition of the present invention.

[0059] 3) Comparative Example 2 showed no decreasing trend in transepidermal water loss rate after 7 and 14 days of use compared to before use, and even increased after 7 days of use, indicating that the repair effect of Comparative Example 2 was significantly worse than that of the plant extract composition of the present invention.

[0060] 4) Comparative Example 3 showed a decreasing trend in transepidermal water loss rate after 7 and 14 days of use compared to before use, decreasing by 1.16 and 0.75 respectively. On the one hand, the decrease was lower than that of the plant extract composition of the present invention. On the other hand, after 14 days of use, there was a rebound compared to 7 days of use, and the transepidermal water loss rate of the skin increased. This indicates that the repair effect of Comparative Example 3 is worse than that of the plant extract composition of the present invention.

[0061] 5) Comparative Example 4 showed a decreasing trend in transepidermal water loss rate after 7 and 14 days of use compared to before use, decreasing by 0.17 and 1.39 respectively. The decrease values ​​were significantly lower than those of the plant extract composition of the present invention, indicating that the repair effect of Comparative Example 4 was worse than that of the plant extract composition of the present invention.

[0062] 6) Comparative Example 5 showed a decreasing trend in transepidermal water loss rate after 7 and 14 days of use compared to before use, decreasing by 0.47 and 0.63 respectively. The decrease values ​​were significantly lower than those of the plant extract composition of the present invention, indicating that the repair effect of Comparative Example 5 was worse than that of the plant extract composition of the present invention.

[0063] 7) Comparing the repair test results of Example 1 and Comparative Examples 1, 2, 3, 4, and 5 of the plant extract composition of the present invention, it is shown that the plant extract composition of the present invention has a better repair effect than a single plant extract, and is also better than other plant extract compositions.

[0064] II. Tightness Test (1) Test method: 1. The test area (face) is placed in a constant temperature and humidity environment for 30 minutes. 2. The skin elasticity (R2) (the higher the skin elasticity (R2) is, the better) and skin firmness (F4) (the lower the skin firmness (F4) is, are measured before product use, 7 days after use, and 14 days after use. 3. Take an appropriate amount (about 2mL) twice a day, pat it into the palm of your hand, and massage until absorbed.

[0065] The testing method refers to T / CAB 0152-2022 "Test Methods for Seven Efficacy Items of Cosmetics: Anti-wrinkle, Firming, Moisturizing, Oil Control, Repairing, Nourishing and Soothing"; Testing instrument: Cutometer (skin elasticity tester); Test environment: Temperature: 21±1℃; Humidity: 50±10%.

[0066] (2) Evaluation criteria: Skin elasticity improvement value = Skin elasticity after use - Skin elasticity before use; Skin firmness improvement value = Skin firmness before use - Skin firmness after use.

[0067] (3) Test results are shown in Tables 8 and 9. Figure 2 and Figure 3 .

[0068] Table 8 Table 9 (4) Analysis of test results: 1) Data analysis showed that, compared with before product use, the plant extract composition of the present invention showed a significant improvement in skin elasticity (R2) after 7 and 14 days of use, with increases of 1.83 and 6.17 respectively; and a significant improvement in skin firmness (F4) after 7 and 14 days of use, with decreases of 0.44 and 0.67 respectively, indicating that the product tested by the present invention has a significant firming effect.

[0069] 2) Comparative Example 1 showed an increasing trend in skin elasticity (R2) after 7 and 14 days of use compared to before use, but the increase was only 0.60 and 3.42, respectively, and the increase was significantly lower than that of the plant extract composition of the present invention. After 7 days of use, skin firmness (F4) showed an increasing trend compared to before use, with an increase of 0.15, which is obviously unfavorable. After 14 days, skin firmness (F4) showed a decreasing trend compared to before use, with a decrease of only 0.36, and the decrease was significantly lower than that of the plant extract composition of the present invention. This indicates that the firming effect of Comparative Example 1 is significantly worse than that of the plant extract composition of the present invention.

[0070] 3) Comparative Example 2 showed an increasing trend in skin elasticity (R2) after 7 and 14 days of use compared to before use, with increases of 1.90 and 2.20 respectively, but the increases were lower than those of the plant extract composition of the present invention; skin firmness (F4) showed a decreasing trend after 7 and 14 days of use compared to before use, with decreases of 0.13 and 0.52 respectively, but the decreases were lower than those of the plant extract composition of the present invention; indicating that the firming effect of Comparative Example 2 was inferior to that of the plant extract composition of the present invention.

[0071] 4) Comparative Example 3 showed an increasing trend in skin elasticity (R2) after 7 and 14 days of use compared to before use, increasing by 1.20 and 4.10 respectively, but the increase was lower than that of the plant extract composition of the present invention; after 7 days of use compared to before use, skin firmness (F4) showed an increasing trend, increasing by 0.01; after 14 days of use compared to before use, skin firmness (F4) also showed no decreasing trend, but instead increased; indicating that the firming effect of Comparative Example 3 was significantly worse than that of the plant extract composition of the present invention.

[0072] 5) Comparative Example 4 showed an increasing trend in skin elasticity (R2) after 7 and 14 days of use compared to before use, with increases of 1.31 and 2.84 respectively, but the increases were lower than those of the plant extract composition of the present invention; skin firmness (F4) showed a decreasing trend after 7 and 14 days of use compared to before use, with decreases of 0.09 and 0.12 respectively, but the decreases were significantly lower than those of the plant extract composition of the present invention; indicating that the firming effect of Comparative Example 4 was inferior to that of the plant extract composition of the present invention.

[0073] 6) Comparative Example 5 showed an increasing trend in skin elasticity (R2) after 7 and 14 days of use compared to before use, with increases of only 1.09 and 2.99, respectively, but the increases were significantly lower than those of the plant extract composition of the present invention; skin firmness (F4) showed a decreasing trend after 7 and 14 days of use compared to before use, with decreases of 0.09 and 0.23, respectively, but the decreases were significantly lower than those of the plant extract composition of the present invention; indicating that the firming effect of Comparative Example 5 was inferior to that of the plant extract composition of the present invention.

[0074] 7) Comparing the firming test results of Example 1 and Comparative Examples 1, 2, 3, 4, and 5 of the plant extract composition of the present invention, it is shown that the plant extract composition of the present invention has a better firming effect than single raw materials, and is also better than other plant extract compositions.

[0075] III. Anti-wrinkle test (1) Test method: 1. The test area (face) is placed in a constant temperature and humidity environment for 30 minutes. 2. Measure the wrinkle parameters before and 14 days after product use. 3. Take an appropriate amount (about 2mL) twice a day, pat it on the whole face in the palm of your hand, and massage until absorbed.

[0076] The testing method refers to T / CAB 0152-2022 "Test Methods for Seven Efficacy Items of Cosmetics: Anti-wrinkle, Firming, Moisturizing, Oil Control, Repairing, Nourishing and Soothing"; Testing instrument: Primos CR tester; Test environment: Temperature: 21±1℃; Humidity: 50±10%.

[0077] (2) Evaluation criteria: The smaller the values ​​of wrinkle number and wrinkle volume in the wrinkle parameters, the better the wrinkle condition.

[0078] (3) Test results are shown in Tables 10 and 11. Figure 4 and Figure 5 .

[0079] Table 10 Table 11 (4) Analysis of test results: 1) Data analysis showed that, compared with before using the product, the plant extract composition of the present invention showed a significant improvement in the number of wrinkles after 14 days of use, with a decrease of 80%; and a significant improvement in the volume of wrinkles after 14 days of use, with a decrease of 1.25%. This indicates that the test product of the present invention has a significant anti-wrinkle effect.

[0080] 2) Comparative Example 1 showed a significant decrease in the number of wrinkles after 14 days of use compared to before use, decreasing by 64, but lower than the plant extract composition of the present invention; the wrinkle volume also decreased after 14 days of use compared to before use, decreasing by 0.94, but lower than the plant extract composition of the present invention; indicating that the tested product has an anti-wrinkle effect, but lower than that of the present invention.

[0081] 3) Comparative Example 2 showed an improved decrease in the number of wrinkles after 14 days of use compared to before use, with a decrease of 45; and a significant improvement in the volume of wrinkles after 14 days of use compared to before use, with a decrease of 0.64. However, both indicators were significantly lower than the plant extract composition of the present invention. Although this indicates that the tested product has an anti-wrinkle effect, the effect is significantly worse than that of the present invention.

[0082] 4) Comparative Example 3 showed an improved decrease in the number of wrinkles after 14 days of use compared to before use, with a decrease of 59; and a significant improvement in the volume of wrinkles after 14 days of use compared to before use, with a decrease of 0.57. However, both indicators were significantly lower than the plant extract composition of the present invention. Although this indicates that the tested product has an anti-wrinkle effect, the effect is significantly worse than that of the present invention.

[0083] 5) Comparative Example 4 showed an improved decrease in the number of wrinkles after 14 days of use compared to before use, with a decrease of 69; and a significant improvement in the volume of wrinkles after 14 days of use compared to before use, with a decrease of 0.81. However, both indicators were lower than those of the plant extract composition of the present invention. Although this indicates that the tested product has an anti-wrinkle effect, the effect is inferior to that of the present invention.

[0084] 6) Comparative Example 5 showed a significant improvement in the number of wrinkles after 14 days of use compared to before use, decreasing by 66; and a significant improvement in the volume of wrinkles after 14 days of use compared to before use, decreasing by 0.95. This indicates that the tested product has an anti-wrinkle effect, but the effect is worse than that of the present invention.

[0085] 7) Comparing the anti-wrinkle test results of Example 1 and Comparative Examples 1, 2, 3, 4, and 5 of the plant extract composition of the present invention, it is shown that the plant extract composition of the present invention has a better anti-wrinkle effect than single raw materials, and is also better than other plant extract compositions.

[0086] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

[0087] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

Claims

1. A plant extract composition, characterized by, The plant extract composition comprises kelp extract and peony bark extract, wherein the mass ratio of kelp extract to peony bark extract is 1:0.6-1.

0.

2. The plant extract composition according to claim 1, characterized by, The mass ratio of the kelp extract to the peony bark extract is 1:0.64-0.99, and more specifically 1:0.7-0.

90.

3. The plant extract composition according to claim 1 or 2, characterized by, Based on a total weight of 100 wt.% for kelp extract and peony bark extract, the kelp extract accounts for 50 wt.%-61 wt.% and the peony bark extract accounts for 39 wt.%-50 wt.%.

4. The plant extract composition according to claim 3, characterized by, Based on a total weight of 100 wt.% for kelp extract and peony bark extract, the kelp extract accounts for 52 wt.%-58 wt.% and the peony bark extract accounts for 42 wt.%-48 wt.%.

5. The plant extract composition according to claim 1, characterized by, The kelp extract is obtained by extracting kelp in a first solvent, and the peony bark extract is obtained by extracting peony bark in a second solvent.

6. The plant extract composition according to claim 5, characterized in that, Both the first solvent and the second solvent contain alcohol solvents or aqueous solutions thereof. Further, the alcohol solvent contains one or more combinations of ethanol, propanol and dipropylene glycol; and / or, the extraction is controlled at 70-90°C.

7. The plant extract composition according to claim 5, characterized by, The kelp extract is added in the form of a kelp extract solution, which is prepared by the following method: kelp is added to a dipropylene glycol aqueous solution and extracted at 70-90°C. After extraction, the residue is removed by filtration to obtain the kelp extract solution. Further, the mass concentration of dipropylene glycol in the dipropylene glycol aqueous solution is 25%-35%, and the mass ratio of kelp to the dipropylene glycol aqueous solution is 1:8-10; and / or, The peony bark extract is added in the form of a peony bark extract solution, which is prepared by the following method: peony bark is added to a dipropylene glycol aqueous solution and extracted at 70-90℃. After extraction, the residue is removed by filtration to obtain the peony bark extract solution. Further, the mass concentration of dipropylene glycol in the dipropylene glycol aqueous solution is 25%-35%, and the mass ratio of peony bark to the dipropylene glycol aqueous solution is 1:8-10.

8. The plant extract composition according to claim 7, characterized by, The kelp extract solution contains 1.55%-1.70% by mass, more preferably 1.55%-1.65% by mass; and / or, the peony bark extract solution contains 1.85%-2.00% by mass, more preferably 1.88%-1.98% by mass.

9. A method of preparing a plant extract composition according to any one of claims 1 to 8, characterized in that, The preparation method includes: mixing kelp extract and peony bark extract according to the formula.

10. The use of a plant extract composition according to any one of claims 1-8 in the preparation of cosmetics.

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