Plant-based carrier material, method of preparation and use thereof in a skin care product

Abstract

This invention discloses a plant-based carrier material, its preparation method, and its application in skincare products. The plant-based carrier material is a powder of leaves from a Lamiaceae plant with an internal porous structure. This porous structure gives the material a good loading capacity and allows it to adsorb and slowly release small molecule liquid components. The preparation process of this carrier material is simple and mild. Furthermore, the Lamiaceae plant leaf raw material has antibacterial, antioxidant, and anti-inflammatory effects, making it suitable as a mask carrier. The cleansing mask obtained using this material as a carrier has excellent oil control and skin cleansing effects.

Description

Technical Field

[0001] This invention belongs to the field of skin care product technology, and relates to a skin care product carrier, its preparation method and application, specifically to a plant-based carrier material, its preparation method and its application in skin care products. Background Technology

[0002] With the rapid development of society, economy and technology, people have higher and higher requirements for quality of life. Skin care products and cosmetics, as an integral part of most people's daily lives, have received more and more attention, and there are higher requirements for the ingredients of skin care products. Among them, skin care products made from natural plants that are safe, effective, gentle, non-toxic and non-irritating have been widely welcomed.

[0003] Among numerous skincare products, face masks can quickly replenish the skin's lost moisture or nutrients, achieving skincare goals and offering benefits such as moisturizing, nourishing, and cleansing. Structurally, face masks can be divided into sheet masks and wash-off masks. Wash-off masks are applied directly to the face and left on for a period of time before rinsing off with water to achieve their intended effects. They mainly consist of a carrier and skincare ingredients. Traditional wash-off masks suffer from low carrier material loading capacity and lack antibacterial and anti-inflammatory properties, resulting in limited moisturizing and cleansing effects that fail to meet consumer needs.

[0004] In view of this, it is necessary to further improve the carrier material of the existing water-washable facial mask. Summary of the Invention

[0005] Therefore, the technical problem to be solved by this invention is that traditional water-washable mask carrier materials have low loading rate, few effects, and poor skin care results. Thus, this invention proposes a plant-based carrier material with high loading rate, good cleaning and antibacterial effects, as well as its preparation method and skin care products.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] The first aspect of the present invention provides a plant-based carrier material, wherein the plant-based carrier material is powder of leaves of Lamiaceae plants with internal porous structures.

[0008] Preferably, the plant powder has an average particle size of 0.5-1.5 μm and the pore structure has a diameter of 50-1000 nm.

[0009] Preferably, the leaves of the Lamiaceae plant are at least one of rosemary leaves, thyme leaves, and mint leaves.

[0010] A second aspect of the present invention provides a method for preparing the plant-based carrier material, comprising the following steps:

[0011] S1. The leaves of plants in the Lamiaceae family are steamed at high temperature to obtain steamed leaves;

[0012] S2. The boiled leaves are dried, and the dried leaves are mixed with solvent and kept at a constant temperature to obtain a mixed solution.

[0013] S3. Filter the mixed solution and dry the filter residue;

[0014] S4. Crush the dried filter residue to obtain the plant-based carrier material.

[0015] Preferably, in step S1, the pressure of the high-temperature steam is not higher than 0.2 MPa, the temperature is 105-115°C, and the cooking time is 20-40 min.

[0016] Preferably, in step S2, the solvent is obtained by mixing a first solvent, a second solvent, and a third solvent, wherein the first solvent is ethanol or isopropanol, the second solvent is ethyl acetate or isopropyl acetate, and the third solvent is water, and the volume ratio of the first solvent, the second solvent, and the third solvent is 1-8:1:1; the amount of solvent added is 8-15 times the mass of the dried leaf.

[0017] Preferably, in step S2, the temperature during the constant temperature heat preservation process is 60-80℃, and the heat preservation time is 12-20h.

[0018] Preferably, in step S2, the moisture content of the dried leaves is 2-10%; and in step S3, the solvent content in the dried filter residue is not higher than 0.5%.

[0019] Preferably, in step S4, the pulverization process involves vibrating and pulverizing the filter residue at a frequency of 25-30Hz.

[0020] A third aspect of the present invention provides the application of the plant-based carrier material described above in a skin care product, wherein the skin care product is a wash-off mask, and the wash-off mask comprises, by weight percentage: 10-20% of the plant-based carrier material, 1-2% of a thickener, 0.1-0.5% of a preservative, 10-20% of a hydrosol, and 60-80% of sterilizing water.

[0021] The technical solution of the present invention has the following advantages compared with the prior art:

[0022] The plant-based carrier material provided by this invention is a powder of Lamiaceae plant leaves with an internal porous structure. This porous structure gives the material a good loading capacity and allows it to adsorb and slowly release small molecule liquid components. The preparation process of this carrier material is simple and mild, and the Lamiaceae plant leaf raw material has antibacterial, antioxidant, and anti-inflammatory effects, making it suitable as a mask carrier. The cleansing mask made from this material has good oil control and skin cleansing effects. Attached Figure Description

[0023] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0024] Figure 1 This is a SEM image of the plant-based carrier material provided in Embodiment 1 of the present invention;

[0025] Figure 2 This is a SEM image of the plant-based carrier material provided in Embodiment 2 of the present invention;

[0026] Figure 3 This is the SEM image of sample 1;

[0027] Figure 4 This is the SEM image of sample 2;

[0028] Figure 5 This is the SEM image of sample 3;

[0029] Figure 6 This is the SEM image of sample 4;

[0030] Figure 7 This is the SEM image of sample 5;

[0031] Figure 8 This is the SEM image of sample 6;

[0032] Figure 9 This is the BET test spectrum of the plant-based carrier material provided in Example 1;

[0033] Figure 10 It is a comparison chart of Sdr values ​​before and after product use;

[0034] Figure 11 It is a comparison chart of Sa values ​​before and after product use;

[0035] Figure 12 This is a comparison chart showing the difference in the amount of sebum on the skin surface before and after product use. Detailed Implementation

[0036] Example 1

[0037] This embodiment provides a plant-based carrier material, which is rosemary leaf powder with an internal porous structure. The diameter of the internal porous structure of the plant-based carrier is 50-1000 nm, and the average particle size of the rosemary leaf powder is 1 μm.

[0038] The plant-based carrier material provided in this embodiment is prepared through the following steps:

[0039] S1. Fresh rosemary leaves are steamed for 30 minutes under high-temperature steam at a pressure of 0.12 MPa and a temperature of 110°C to obtain steamed leaves.

[0040] S2. After steaming, the leaves are dried in a drying oven until the moisture content of the leaves is 4.2%. 500g of dried leaves are mixed with a solvent, the mass of which is 10 times that of the dried leaves. The solvent is obtained by mixing a first solvent, a second solvent, and a third solvent. The first solvent is ethanol, the second solvent is ethyl acetate, and the third solvent is water. In this embodiment, the volume ratio of ethanol, ethyl acetate, and water is 5:1:1. After mixing the dried leaves with the solvent, the mixture is kept at 65°C for 15 hours to obtain a mixed solution.

[0041] S3. Filter the mixed solution obtained in step S2, concentrate the filtrate under reduced pressure and recover it for later use, and vacuum dry the filter residue for 14 hours until the solvent content is less than 0.5%. In this embodiment, the solvent content in the dried filter residue is 0.32%.

[0042] S4. The dried filter residue is ultra-finely pulverized at a frequency of 25 Hz to obtain plant-based carrier material.

[0043] The plant-based carrier material provided in this embodiment uses the leaves of Lamiaceae plants as raw materials. Through high-temperature steam cooking and mixing with solvents containing specific components, a carrier material with high porosity is obtained. This carrier material has a high loading rate and good adsorption and sustained-release effects. It can adsorb and release small molecule liquid components. The preparation process of this carrier material is simple and mild. Moreover, the raw material of Lamiaceae plant leaves has antibacterial, antioxidant, and anti-inflammatory effects, making it suitable as a mask carrier. The cleansing mask obtained by using it as a carrier has good oil control and skin cleansing effects.

[0044] This embodiment also provides a skin care product, which is a wash-off mask. The wash-off mask comprises, by weight percentage, 15% of the above-mentioned plant-based carrier material, 1.5% of thickener, 0.3% of preservative, 15% hydrosol, and 68.2% of sterilized water.

[0045] Example 2

[0046] This embodiment provides a plant-based carrier material, which is rosemary leaf powder with an internal porous structure. The diameter of the porous structure of the plant-based carrier is 50-1000 nm, and the average particle size of the rosemary leaf powder is 0.5 μm.

[0047] The plant-based carrier material provided in this embodiment is prepared through the following steps:

[0048] S1. Fresh rosemary leaves are steamed for 25 minutes with high-temperature steam at a pressure of 0.17 MPa and a temperature of 105°C to obtain steamed leaves.

[0049] S2. After steaming, the leaves are dried in a drying oven until the moisture content of the leaves is 5.3%. 500g of dried leaves are mixed with a solvent, the mass of which is 8 times that of the dried leaves. The solvent is obtained by mixing a first solvent, a second solvent, and a third solvent. The first solvent is ethanol, the second solvent is ethyl acetate, and the third solvent is water. In this embodiment, the volume ratio of ethanol, ethyl acetate, and water is 7:1:1. After mixing the dried leaves with the solvent, the mixture is kept at 80°C for 14 hours to obtain a mixed solution.

[0050] S3. Filter the mixed solution obtained in step S2, concentrate the filtrate under reduced pressure and recover it for later use, and vacuum dry the filter residue for 15 hours until the solvent content is less than 0.5%. In this embodiment, the solvent content in the dried filter residue is 0.25%.

[0051] S4. The dried filter residue is ultra-finely pulverized at a frequency of 28 Hz to obtain plant-based carrier material.

[0052] This embodiment also provides a skin care product, which is a wash-off mask. The wash-off mask comprises, by weight percentage, 13% of the above-mentioned plant-based carrier material, 1.3% of thickener, 0.2% of preservative, 12% hydrosol, and 73.5% of sterilized water.

[0053] Example 3

[0054] This embodiment provides a plant-based carrier material, which is thyme leaf powder with an internal porous structure. The diameter of the porous structure of the plant-based carrier is 50-1000 nm, and the average particle size of the thyme leaf powder is 1.5 μm.

[0055] The plant-based carrier material provided in this embodiment is prepared through the following steps:

[0056] S1. Fresh thyme leaves are steamed for 20 minutes with high-temperature steam at a pressure of 0.14 MPa and a temperature of 115°C to obtain steamed leaves.

[0057] S2. After steaming, the leaves are dried in a drying oven until the moisture content of the leaves is 2%. 500g of dried leaves are mixed with a solvent, the mass of which is 15 times that of the dried leaves. The solvent is obtained by mixing a first solvent, a second solvent, and a third solvent. The first solvent is isopropanol, the second solvent is ethyl acetate, and the third solvent is water. In this embodiment, the volume ratio of isopropanol, ethyl acetate, and water is 8:1:1. After mixing the dried leaves with the solvent, the mixture is kept at 60°C for 20 hours to obtain a mixed solution.

[0058] S3. Filter the mixed solution obtained in step S2, concentrate the filtrate under reduced pressure and recover it for later use, and vacuum dry the filter residue for 13 hours until the solvent content is less than 0.5%. In this embodiment, the solvent content in the dried filter residue is 0.35%.

[0059] S4. The dried filter residue is ultra-finely pulverized at a frequency of 30Hz to obtain plant-based carrier material.

[0060] This embodiment also provides a skin care product, which is a wash-off mask. The wash-off mask comprises, by weight percentage, 20% of the above-mentioned plant-based carrier material, 1% thickener, 0.5% preservative, 10% hydrosol, and 68.5% sterilized water.

[0061] Example 4

[0062] This embodiment provides a plant-based carrier material, which is thyme leaf powder with an internal porous structure. The diameter of the porous structure of the plant-based carrier is 50-1000 nm, and the average particle size of the thyme leaf powder is 1.2 μm.

[0063] The plant-based carrier material provided in this embodiment is prepared through the following steps:

[0064] S1. Fresh thyme leaves are steamed for 40 minutes with high-temperature steam at a pressure of 0.18 MPa and a temperature of 108°C to obtain steamed leaves.

[0065] S2. After steaming, the leaves are dried in a drying oven until the moisture content of the leaves is 10%. 500g of dried leaves are mixed with a solvent, the mass of which is 15 times that of the dried leaves. The solvent is obtained by mixing a first solvent, a second solvent, and a third solvent. The first solvent is isopropanol, the second solvent is isopropyl acetate, and the third solvent is water. In this embodiment, the volume ratio of isopropanol, isopropyl acetate, and water is 4:1:1. After mixing the dried leaves with the solvent, the mixture is kept at 65°C for 12 hours to obtain a mixed solution.

[0066] S3. Filter the mixed solution obtained in step S2, concentrate the filtrate under reduced pressure and recover it for later use, and vacuum dry the filter residue for 13 hours until the solvent content is less than 0.5%. In this embodiment, the solvent content in the dried filter residue is 0.32%.

[0067] S4. The dried filter residue is ultra-finely pulverized at a frequency of 30Hz to obtain plant-based carrier material.

[0068] This embodiment also provides a skin care product, which is a wash-off mask. The wash-off mask comprises, by weight percentage, 10% of the above-mentioned plant-based carrier material, 2% thickener, 0.1% preservative, 20% hydrosol, and 67.9% sterilized water.

[0069] Example 5

[0070] This embodiment provides a plant-based carrier material, which is thyme leaf powder with an internal porous structure. The diameter of the porous structure of the plant-based carrier is 50-1000 nm, and the average particle size of the thyme leaf powder is 0.8 μm.

[0071] The plant-based carrier material provided in this embodiment is prepared through the following steps:

[0072] S1. Fresh mint leaves are steamed for 35 minutes with high-temperature steam at a pressure of 0.15 MPa and a temperature of 110°C to obtain steamed leaves.

[0073] S2. After steaming, the leaves are dried in a drying oven until the moisture content of the leaves is 6%. 500g of dried leaves are mixed with a solvent, the mass of which is 10 times that of the dried leaves. The solvent is obtained by mixing a first solvent, a second solvent, and a third solvent. The first solvent is isopropanol, the second solvent is ethyl acetate, and the third solvent is water. In this embodiment, the volume ratio of isopropanol, ethyl acetate, and water is 6:1:1. After mixing the dried leaves with the solvent, the mixture is kept at 70°C for 17 hours to obtain a mixed solution.

[0074] S3. Filter the mixed solution obtained in step S2, concentrate the filtrate under reduced pressure and recover it for later use, and vacuum dry the filter residue for 14 hours until the solvent content is less than 0.5%. In this embodiment, the solvent content in the dried filter residue is 0.34%.

[0075] S4. The dried filter residue is ultra-finely pulverized at a frequency of 30Hz to obtain plant-based carrier material.

[0076] This embodiment also provides a skin care product, which is a wash-off mask. The wash-off mask comprises, by weight percentage, 12% of the above-mentioned plant-based carrier material, 1.6% of thickener, 0.4% of preservative, 16% of hydrosol, and 70% of sterilized water.

[0077] Experimental Example

[0078] 1. Characterization of the pore structure morphology

[0079] The scanning electron microscope (SEM) image of the plant-based carrier material provided in Example 1 is shown in the following figure. Figure 1 As shown, the scanning electron microscope (SEM) image of the plant-based carrier material provided in Example 2 is presented. The test results are as follows. Figure 2 As shown.

[0080] As can be seen from the figure, the plant-based carrier material prepared by the methods of Examples 1 and 2 of this application has a large number of surface pores, forming a porous structure, which gives it a high loading rate.

[0081] To compare the porosity of plant-based carrier materials under different reaction conditions, the following comparative experiments were also conducted:

[0082] Comparative Experiment 1

[0083] Fresh rosemary leaves were used as raw material and dried in an oven until the moisture content of the leaves was 3.2%. The dried leaves were then subjected to ultrafine grinding (ultrafine powder frequency 25Hz) to obtain sample 1. The SEM image of sample 1 is shown below. Figure 3 As shown.

[0084] Fresh rosemary leaves were steamed for 20 minutes using high-temperature steam (0.15 MPa). After cooling, the wet leaves were dried in an oven until the moisture content was 3.6%. The dried leaves were then subjected to ultrafine grinding (ultrafine powder frequency 25 Hz) to obtain sample 2. The SEM image of sample 2 is shown below. Figure 4 As shown.

[0085] from Figures 3-4 It can be seen that the surface structure of fresh plant leaves is destroyed after being steamed at high temperatures, which facilitates the formation of internal pore structures later.

[0086] Comparative Experiment 2

[0087] Fresh rosemary leaves were used as raw material. The leaves were dried in an oven until the moisture content was 3.2%. 500g of dried leaves were mixed with 15 times their weight of solvent (ethanol:ethyl acetate:water = 3:2:1), and kept at 65℃ for 12 hours. The mixture was then filtered, and the filtrate was concentrated under reduced pressure and collected for later use. The filter residue was vacuum dried for approximately 13 hours, and its solvent content was found to be 0.42%. The residue was then subjected to ultrafine grinding (ultrafine powder frequency 25Hz) to obtain sample 3. The SEM image of sample 3 is shown below. Figure 5 As shown.

[0088] Fresh rosemary leaves were steamed for 20 minutes using high-temperature steam (0.15 MPa). After cooling, the wet leaves were dried in an oven until the moisture content was 3.6%. 500g of dried leaves were mixed with 15 times their weight of solvent (ethanol:ethyl acetate:water = 3:2:1) and kept at 65℃ for 12 hours. The mixture was then filtered, and the filtrate was concentrated under reduced pressure and collected for later use. The filter residue was vacuum dried for approximately 13 hours, and its solvent content was found to be 0.47%. The residue was then subjected to ultrafine grinding (ultrafine powder frequency 25 Hz) to obtain sample 4. The SEM image of sample 4 is shown below. Figure 6 As shown.

[0089] from Figures 5-6 It can be seen that the pore structure obtained by immersing fresh plant leaves in a solvent after high-temperature steam treatment is better than that obtained by pore etching without high-temperature steam treatment.

[0090] Comparative Experiment 3

[0091] Fresh rosemary leaves were steamed for 20 minutes using high-temperature steam (0.15 MPa). After cooling, the wet leaves were dried in an oven until the moisture content was 3.6%. 500g of dried leaves were added to a water-saturated ethyl acetate solution (15 times the weight of the dried leaves), and kept at 65℃ for 12 hours. The solution was then filtered, and the filtrate was concentrated under reduced pressure and collected for later use. The filter residue was vacuum dried for approximately 10 hours, and its solvent content was found to be 0.38%. The residue was then subjected to ultrafine grinding (25 Hz) to obtain sample 5. The SEM image of sample 5 is shown below. Figure 7 As shown.

[0092] Fresh rosemary leaves were steamed for 20 minutes using high-temperature steam (0.15 MPa). After cooling, the wet leaves were dried in an oven until the moisture content was 3.6%. 500g of dried leaves were mixed with 15 times their weight of the solvent (ethanol:water = 7:1), and kept at 65℃ for 12 hours. The mixture was then filtered, and the filtrate was concentrated under reduced pressure and collected for later use. The filter residue was vacuum dried for approximately 13 hours, and its solvent content was found to be 0.42%. The residue was then subjected to ultrafine grinding (ultrafine powder frequency 25 Hz) to obtain sample 6. The SEM image of sample 6 is shown below. Figure 8 As shown.

[0093] like Figure 6-8 As shown in the figure, the effects of different mixed solvents on etching the inside of the blade were compared. It can be seen from the figure that the mixed solvent of ethanol, ethyl acetate and water has the best effect on etching the channel.

[0094] 2. BET test of the plant-based carrier material provided in Example 1

[0095] Test results are as follows Figure 9As shown in the figure, the test results indicate that the plant-based carrier material has good adsorption performance.

[0096] 3. Efficacy test of the skincare product provided in Example 1

[0097] a. Test method basis

[0098] Methods: Instrumental analysis and image analysis;

[0099] Source: PONY-SOPR-23014.02 "Test Methods for Cleansing and Makeup Removal Effects of Cosmetics"; PONY-SOPR-22014.01 "Test Methods for Oil Control Efficacy of Cosmetics".

[0100] b. Subject Information

[0101] Participants: A total of 30 participants, including 8 males and 22 females, aged 21 to 42 years, with a mean age of 28.97 ± 5.37 years, meeting the criteria for voluntary inclusion.

[0102] c. Testing instruments

[0103] 1. PRIMOS CR, a rapid 3D skin imaging system;

[0104] 2. MPA580 Skin Elasticity Tester (with built-in elasticity and oil probes);

[0105] 3. Analyze the balance scale.

[0106] d. Test environment

[0107] The test should be conducted in an environment with a temperature of 21±1℃ and a relative humidity of 50±10% RH. Subjects should acclimatize to these conditions for at least 30 minutes before evaluation and testing. This test meets the requirements.

[0108] e. Test metrics

[0109] Table 1 Efficacy Tests

[0110]

[0111] f. Evaluation Indicators

[0112] This trial design employed a self-controlled pre- and post-trial approach, using randomization and double-blinding to minimize or control bias. Feedback on product use was collected from participants via questionnaires. This was a placebo trial. The evaluation metrics are as follows:

[0113] Table 2 Evaluation Indicators

[0114]

[0115] Note: Excel software was used for statistical analysis of the test data. The percentage of participants who gave positive ratings (4 or 5 points) for each indicator was calculated based on their evaluation of the product's usability at various test time points after use.

[0116] g. Data Statistics

[0117] Statistical analysis software was used to perform statistical analysis on the data. Quantitative data were expressed as mean ± standard deviation and subjected to a normality test. If the data met the normality requirement, paired t-tests were used for comparisons of the data before and after the same period; otherwise, two-sample rank-sum tests were used. Ordinal data were compared using two-sample rank-sum tests. Comparisons between the experimental product and the control group were performed using independent samples t-tests or rank-sum tests. All statistical analyses were two-tailed tests, with a significance level of α = 0.05.

[0118] h. Result Judgment

[0119] If any parameter in the instrument test after cleaning shows a significant difference compared to the initial value (P < 0.05), the test product is considered to have a cleaning effect; otherwise, the test product is considered to have no cleaning effect. If the difference in sebum measurement value in the sample application area is significant compared to the control area (P < 0.05), the tested sample has an oil-controlling effect. If the difference in sebum measurement value in the sample application area is not significant compared to the control area, the tested sample has no oil-controlling effect.

[0120] i. Test Results

[0121] (1) Adverse skin reactions during trial use

[0122] Human trials are conducted to observe the safety of the sample on human skin. During follow-up visits with the subjects, any adverse events that occurred during the subjects' use of the sample are carefully inquired about, examined, and recorded, including the manifestation of the adverse event, the time of occurrence, the treatment measures, and the outcome. The relationship between the adverse event and the sample used is also assessed.

[0123] Table 3. Adverse skin reactions in human trials.

[0124] Skin reaction Classification Before use Immediately after use 1 hour after use 4 hours after use No response 0 30 cases 30 cases 30 cases 30 cases faint erythema 1 0 cases 0 cases 0 cases 0 cases Erythema, infiltration, papules 2 0 cases 0 cases 0 cases 0 cases Erythema, edema, papules, vesicles 3 0 cases 0 cases 0 cases 0 cases Erythema, edema, bullae 4 0 cases 0 cases 0 cases 0 cases

[0125] Test results show that the washable face mask provided in this application embodiment has no adverse effects on human skin.

[0126] (2) Sdr value results

[0127] Table 4. Sdr values ​​at different time points (mean ± standard deviation) (unit: %)

[0128] Group Before use (0h) Immediately after use (0.25h) Test sample 12.70±7.74 18.10±8.59

[0129] Table 5. Rate of change of Sdr value

[0130] Group Immediately after use (0.25h) Test sample 42.52％

[0131] Table 6. Test results of Sdr value

[0132] Time point Comparison methods N Statistical methods p-value Significance Immediately after use (0.25h) Compared with before use 30 Paired t-test 0.0000 ***

[0133] (Significance notation: "ns" indicates no statistical difference, P > 0.05; "*" indicates a significant difference, 0.01 ≤ P < 0.05; "**" indicates a highly significant difference, 0.001 ≤ P < 0.01; "***" indicates an extremely significant difference, P < 0.001. "N" indicates the number of users = 30.)

[0134] For example, the Sdr values ​​before and after product use are compared. Figure 10 As shown, “ns” indicates no statistical difference (P>0.05); “*” indicates a significant difference (0.01≤P<0.05); “**” indicates a highly significant difference (0.001≤P<0.01); and “***” indicates an extremely significant difference (P<0.001).

[0135] The results showed that immediately after using the test product, the Sdr value of the test sample area of ​​the subjects was significantly different from that before use.

[0136] (3) Sa value results

[0137] Table 7. Sa values ​​at different time points (mean ± standard deviation) (unit: μm)

[0138] Group Before use (0h) Immediately after use (0.25h) Test sample 38.03±14.17 43.47±14.87

[0139] Table 8. Rate of change of Sa value

[0140] Group Immediately after use (0.25h) Test sample 14.30％

[0141] Table 9 Sa value test results

[0142]

[0143] (Significance notation: "ns" indicates no statistical difference, P > 0.05; "*" indicates a significant difference, 0.01 ≤ P < 0.05; "**" indicates a highly significant difference, 0.001 ≤ P < 0.01; "***" indicates an extremely significant difference, P < 0.001. "N" indicates the number of users = 30.)

[0144] Comparison of Sa values ​​before and after sample use Figure 11As shown, “ns” indicates no statistical difference (P>0.05); “*” indicates a significant difference (0.01≤P<0.05); “**” indicates a highly significant difference (0.001≤P<0.01); and “***” indicates an extremely significant difference (P<0.001).

[0145] The results showed that immediately after using the test product, the Sa value of the test sample area of ​​the subjects was significantly different from that before use.

[0146] (4) Skin surface sebum test

[0147] Table 10 Data on sebum levels on the skin surface at different time points (mean ± standard deviation) (unit: μg / cm²) 2 )

[0148]

[0149] Table 11 Changes in sebum content on skin surface (mean ± standard deviation) (unit: μg / cm³) 2 )

[0150]

[0151] Table 12 Results of the test on the difference in sebum content on the skin surface

[0152]

[0153] (Significance notation: "ns" indicates no statistical difference, P > 0.05; "*" indicates a significant difference, 0.01 ≤ P < 0.05; "**" indicates a highly significant difference, 0.001 ≤ P < 0.01; "***" indicates an extremely significant difference, P < 0.001. "N" indicates the number of users = 30.)

[0154] The difference in sebum content on the skin before and after sample use is as follows: Figure 12 As shown, “ns” indicates no statistical difference (P>0.05); “*” indicates a significant difference (0.01≤P<0.05); “**” indicates a highly significant difference (0.001≤P<0.01); and “***” indicates an extremely significant difference (P<0.001).

[0155] The results showed that immediately after using the test product, the difference in the amount of sebum on the skin surface of the test sample area of ​​the subjects was significantly different from that of the blank control area.

[0156] After using the test product for 1 hour, the difference in the amount of sebum on the skin surface of the test sample area of ​​the subjects was significantly different from that of the blank control area.

[0157] After using the test product for 4 hours, the difference in the amount of sebum on the skin surface of the test sample area of ​​the subjects was significantly different from that of the blank control area.

[0158] (5) Self-assessment and statistical analysis

[0159] Table 13 Evaluation of Subjects' Use of Test Products

[0160] Evaluation indicators Evaluation time (4 hours) 1. The cleanliness of the product. 100.00％ 2. The product's oil control effect. 100.00％ 3. The refreshing feeling on the skin after using the product. 93.00％ 4. Evaluation of satisfaction with the product's gentleness after use. 87.00％ 5. Overall satisfaction evaluation after using the product for a period of time. 100.00％

[0161] (Evaluation criteria: 1 point for "Very dissatisfied", 2 points for "Dissatisfied", 3 points for "Neutral", 4 points for "Satisfied", 5 points for "Very satisfied". The percentage of users with a score N ≥ 4 is calculated. "N" represents the number of product users = 30.)

[0162] Test Conclusion: The instrument test and evaluation results show that:

[0163] Immediately after using the test product, the Sdr value of the test sample area of ​​the subjects was significantly different from that before use;

[0164] Immediately after using the test product, the Sa value of the test sample area of ​​the subjects was significantly different from that before use;

[0165] Immediately after using the test product, the difference in the amount of sebum on the skin surface of the test sample area of ​​the subjects was significantly different from that of the blank control area;

[0166] After using the test product for 1 hour, the difference in the amount of sebum on the skin surface of the test sample area of ​​the subjects was significantly different from that of the blank control area.

[0167] After using the test product for 4 hours, the difference in the amount of sebum on the skin surface of the test sample area of ​​the subjects was significantly different from that of the blank control area.

[0168] The subjects' self-report results showed:

[0169] After 4 hours of continuous use, 100.00% of the test subjects were satisfied with the product's cleaning effect.

[0170] 100.00% of the participants were satisfied with the product's oil-controlling effect after use; 93.00% of the participants were satisfied with the refreshing feeling on their skin after use; 87.00% of the participants were satisfied with the product's gentleness after use; and 100.00% of the participants were generally satisfied after use.

[0171] In summary: After using the tested product, it has immediate cleansing and oil-controlling effects on the skin; after 1 hour of use, it has oil-controlling effects on the skin; after 4 hours of use, it has oil-controlling effects on the skin.

[0172] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A plant-based carrier material, characterized in that, The plant-based carrier material is a Labiatae plant leaf powder with a pore structure inside, the Labiatae plant leaf is at least one of rosemary leaf, thyme leaf and mint leaf, and the plant-based carrier material is prepared by the following steps: S1, the Labiatae plant leaf is cooked by high-temperature steam, and the cooked leaf is obtained, the pressure of the high-temperature steam is not higher than 0.2 MPa, the temperature is 105-115 ℃, and the cooking time is 20-40 min; S2, the cooked leaf is dried, and the dried leaf is mixed with a solvent, and constant temperature and heat preservation treatment is carried out to obtain a mixed solution, the temperature during the constant temperature and heat preservation treatment is 60-80 ℃, and the heat preservation time is 12-20 h; the solvent is obtained by mixing a first solvent, a second solvent and a third solvent, wherein the first solvent is ethanol or isopropyl alcohol, the second solvent is ethyl acetate or isopropyl acetate, and the third solvent is water, the volume ratio of the first solvent, the second solvent and the third solvent is 1-8:1:1; the adding amount of the solvent is 8-15 times of the mass of the dried leaf; S3, the mixed solution is filtered, and the filter residue is dried; S4, the dried filter residue is crushed to obtain the plant-based carrier material; The plant-based carrier material is used for skin care products, and the skin care product is a water-washing mask, which comprises 10-20% of the plant-based carrier material, 1-2% of a thickening agent, 0.1-0.5% of a preservative, 10-20% of a hydrolate, and the balance of sterilized water.

2. The plant-based carrier material of claim 1, wherein, The diameter of the pore structure is 50-1000 nm.

3. The plant-based carrier material of claim 2, wherein, In step S2, the moisture content of the dried leaf is 2-10%; in step S3, the solvent content in the dried filter residue is not higher than 0.5%.

4. The plant-based carrier material of claim 3, wherein, In step S4, the crushing process is: the filter residue is ultra-finely crushed at a frequency of 25-30 Hz.

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