A white yam almond face mask liquid and a preparation method and application thereof

Abstract

The application provides a white-borneol apricot kernel face mask liquid and a preparation method and application thereof, and relates to the technical field of cosmetics. The preparation raw materials of the white-borneol apricot kernel face mask liquid provided by the application include white petrolatum 5-20 parts, mono-diglyceride 1-10 parts, methyl p-hydroxybenzoate 0.01-8 parts, glycerol 1-10 parts, butanediol 0.05-10 parts, Tween-80 0.05-12 parts and compound extraction liquid 10-30 parts in terms of weight percentage. The white-borneol apricot kernel face mask liquid provided by the application has good moisturizing effect, is cold and heat resistant, has good stability and meets the microbial detection standard of cosmetics.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, specifically to a Bletilla striata and almond moisturizing facial mask liquid, its preparation method, and its application. Background Technology

[0002] Dry skin is a common skin problem caused by a decreased ability to retain moisture, which is regulated by the skin barrier function. Symptoms of dry skin mainly include tightness, dryness and peeling in certain areas, and itching all over the body after bathing, which is particularly pronounced in northern China. Currently, many methods for treating dry skin involve using moisturizers and other chemical agents to achieve a hydrating effect. However, this method does not fundamentally solve the problem of dry skin, and these chemical agents can also cause some damage to the skin.

[0003] Facial mask products on the market are mainly divided into chemical, natural plant, and biological types. Chemical moisturizers are highly effective, but many have some degree of cytotoxicity or can cause some damage to the human body. Biological moisturizers, due to their relatively safe source and objective effects, have become one of the main research focuses in recent years; however, due to limitations in technological development, most have long production cycles, low yields, and high costs. Natural plant moisturizers, on the other hand, are derived from nature, have good safety, and are abundant, readily available, and inexpensive; however, the moisturizing effect and stability of natural plant moisturizers currently need improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a Bletilla striata and almond moisturizing facial mask liquid, its preparation method and application. The Bletilla striata and almond moisturizing facial mask liquid provided by this invention has good moisturizing effect, cold and heat resistance, good stability and meets the cosmetic microbial testing standards.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] This invention provides a Bletilla striata and almond moisturizing facial mask liquid. By weight, the raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid include 5-20 parts of white petrolatum, 1-10 parts of mono- and distearate glyceryl monostearate, 0.01-8 parts of methylparaben, 1-10 parts of glycerin, 0.05-10 parts of butylene glycol, 0.05-12 parts of Tween-80, and 10-30 parts of compound extract.

[0007] The compound extract includes Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract and licorice aqueous extract; the volume ratio of Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract and licorice aqueous extract is 7-15:6-14:2-7:3-7.

[0008] Preferably, the preparation method of Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract, or licorice aqueous extract includes:

[0009] The Chinese medicinal materials to be extracted are soaked in water to obtain a mixed system; the Chinese medicinal materials to be extracted are Bletilla striata powder, apricot kernel powder, Kochia scoparia powder or licorice powder;

[0010] The mixture was subjected to a first heating and reflux process, followed by a first solid-liquid separation, to obtain a first filtrate and a first filter residue.

[0011] The first filter residue is heated and refluxed a second time, and after the second solid-liquid separation, the second filtrate is obtained;

[0012] The first filtrate and the second filtrate are mixed to obtain a Bletilla striata aqueous extract, an apricot kernel aqueous extract, a Kochia scoparia aqueous extract, or a licorice aqueous extract.

[0013] Preferably, the mass ratio of the medicinal material to be extracted to water is 1-7:5-20.

[0014] Preferably, the soaking temperature is room temperature, and the soaking time is 0 to 5 hours.

[0015] Preferably, the time for the first heating reflux and the second heating reflux is independently 0.5 to 5 hours.

[0016] This invention provides a method for preparing the Bletilla striata and almond moisturizing facial mask liquid described in the above technical solution, comprising the following steps:

[0017] White petrolatum and glyceryl mono- and distearate stearates were first mixed to obtain the oil phase;

[0018] Glycerin, butanediol, Tween-80, and the composite extract were mixed a second time to obtain an aqueous phase.

[0019] The oil phase was added to the aqueous phase, and methylparaben was added to obtain Bletilla striata and almond moisturizing facial mask liquid.

[0020] Preferably, the temperature of the first mixing is 70–90°C.

[0021] Preferably, the temperature of the second mixing is 70–90°C.

[0022] This invention provides the application of the Bletilla striata and almond moisturizing facial mask liquid described in the above technical solution or the Bletilla striata and almond moisturizing facial mask liquid prepared by the preparation method described in the above technical solution in skin care products.

[0023] This invention provides a Bletilla striata and almond moisturizing facial mask liquid. This invention offers a pure natural facial mask with good moisturizing effect, cold and heat resistance, good stability, and compliance with cosmetic microbiological testing standards. Pure natural Chinese herbal extracts have a mild effect, few toxic side effects, and a unique advantage—the ability to treat facial diseases. Therefore, using Chinese herbs or their extracts as a method to solve dry skin problems has better effectiveness and safety compared to chemical moisturizers.

[0024] From the perspective of Traditional Chinese Medicine (TCM), there are two causes of dry skin: one is the depletion and insufficiency of body fluids, and the other is the obstruction of body fluid distribution. The *Suwen Yin Yang Ying Xiang Da Lun* states, "Dryness prevails, leading to dryness." Dryness belongs to Yang pathogens; it is dry and astringent in nature, easily consuming the body's fluids and causing the skin to become dry and lack moisture. This shows that the distribution of body fluids is closely related to the lungs' dispersing and descending functions, the spleen's transporting and transforming functions, and the kidneys' vaporizing and qi-transforming functions. Therefore, using moisturizing Chinese herbs to regulate the lungs, spleen, and kidneys helps to normalize the distribution of body fluids. The Bletilla striata and Almond Nourishing Facial Mask provided by this invention is a pure TCM facial mask prescription, based on numerous ancient prescriptions and guided by TCM theory. It selects Xinjiang specialty medicinal materials and some herbal extracts in combination, showing significant efficacy in treating common facial dryness. Attached Figure Description

[0025] Figure 1 A positive test for Staphylococcus aureus;

[0026] Figure 2 A positive test for Pseudomonas aeruginosa;

[0027] Figure 3 A positive result for the Bletilla striata and almond moisturizing facial mask liquid;

[0028] Figure 4 The scoring criteria used for sensory evaluation in this example;

[0029] Figure 5 The scoring criteria used to optimize the mask liquid matrix. Detailed Implementation

[0030] This invention provides a Bletilla striata and almond moisturizing facial mask liquid. By weight, the raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid include 5-20 parts of white petrolatum, 1-10 parts of mono- and distearate glyceryl monostearate, 0.01-8 parts of methylparaben, 1-10 parts of glycerin, 0.05-10 parts of butylene glycol, 0.05-12 parts of Tween-80, and 10-30 parts of compound extract.

[0031] The compound extract includes Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract and licorice aqueous extract; the volume ratio of Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract and licorice aqueous extract is 7-15:6-14:2-7:3-7.

[0032] The raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid provided by the present invention include 5 to 20 parts of white petrolatum, preferably 10 to 15 parts, by weight.

[0033] Based on the weight percentage of the white petrolatum, the raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid provided by the present invention include 1 to 10 parts of mono- and di-stearyl glycerides, preferably 1.5 to 8 parts. In the present invention, the mono- and di-stearyl glycerides function as emulsifiers.

[0034] Based on the weight percentage of the white petrolatum, the raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid provided by the present invention include 0.01 to 8 parts of methylparaben, preferably 0.02 to 6 parts. In the present invention, the function of methylparaben is bactericidal and preservative.

[0035] Based on the weight parts of the white petrolatum, the raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid provided by the present invention include 1 to 10 parts of glycerin, preferably 3 to 8 parts. In the present invention, the glycerin functions as a moisturizer.

[0036] Based on the weight percentage of the white petrolatum, the raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid provided by the present invention include 0.05 to 10 parts of butylene glycol, preferably 0.25 to 0.75 parts. In a specific embodiment of the present invention, the butylene glycol is 1,2-butanediol. In the present invention, the function of the butylene glycol is moisturizing and thickening.

[0037] Based on the weight percentage of the white petrolatum, the raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid provided by the present invention include 0.05 to 12 parts of Tween-80, preferably 0.25 to 1 part. In the present invention, the function of Tween-80 is as an emulsifier, etc.

[0038] Based on the weight percentage of the white petrolatum, the raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid provided by the present invention include 10-30 parts of a compound extract, preferably 18-20 parts. In the present invention, the compound extract includes Bletilla striata aqueous extract, almond aqueous extract, Kochia scoparia aqueous extract, and licorice aqueous extract; the volume ratio of the Bletilla striata aqueous extract, almond aqueous extract, Kochia scoparia aqueous extract, and licorice aqueous extract is 7-15:6-14:2-7:3-7, preferably 7:6:2:3.

[0039] In this invention, the preparation method of Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract, or licorice aqueous extract includes: soaking the medicinal materials to be extracted in water to obtain a mixed system; the medicinal materials to be extracted are Bletilla striata powder, apricot kernel powder, Kochia scoparia powder, or licorice powder; subjecting the mixed system to a first heating and reflux, and after a first solid-liquid separation, obtaining a first filtrate and a first filter residue; subjecting the first filter residue to a second heating and reflux, and after a second solid-liquid separation, obtaining a second filtrate; mixing the first filtrate and the second filtrate to obtain the Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract, or licorice aqueous extract. In this invention, the preferred mass ratio of the medicinal materials to be extracted to water is 1-7:5-20, more preferably 1-5:10-15. In this invention, the preferred particle size of the Bletilla striata powder, apricot kernel powder, Kochia scoparia powder, and licorice powder is 20 mesh. In this invention, the soaking temperature is preferably room temperature, and the soaking time is preferably 0-5 hours, more preferably 0.5-3 hours. In this invention, the times for the first and second heating reflux are independently preferably 0.5-5 hours, more preferably 1.5-3 hours.

[0040] In this invention, the pH values ​​of the Bletilla striata aqueous extract, almond aqueous extract, Kochia scoparia aqueous extract and licorice aqueous extract are preferably 5 to 8, and more preferably 6.0.

[0041] This invention provides a method for preparing the Bletilla striata and almond moisturizing facial mask liquid described in the above technical solution, comprising the following steps:

[0042] White petrolatum and glyceryl mono- and distearate stearates were first mixed to obtain the oil phase;

[0043] Glycerin, butanediol, the composite extract and Tween-80 were mixed a second time to obtain the aqueous phase;

[0044] The oil phase was added to the aqueous phase, and methylparaben was added to obtain Bletilla striata and almond moisturizing facial mask liquid.

[0045] In this invention, white petrolatum and glyceryl mono- and glyceryl distearate are first mixed to obtain an oil phase. In this invention, the temperature of the first mixing is preferably 70–90°C, more preferably 80°C. In this invention, the first mixing is preferably carried out under water bath conditions.

[0046] This invention involves a second mixing of glycerol, butylene glycol, a composite extract, and Tween-80 to obtain an aqueous phase. In this invention, the temperature of the second mixing is preferably 70–90°C, more preferably 80°C. Preferably, the second mixing process includes heating glycerol and the composite extract to the temperature for the second mixing, melting them, and then adding Tween-80 and butylene glycol.

[0047] After obtaining the oil phase and the aqueous phase, the present invention adds the oil phase to the aqueous phase and adds methylparaben to obtain a Bletilla striata and almond moisturizing facial mask liquid. In the present invention, the oil phase is preferably added to the aqueous phase while it is hot.

[0048] This invention provides the application of the Bletilla striata and almond moisturizing facial mask liquid described in the above-described technical solution, or the Bletilla striata and almond moisturizing facial mask liquid prepared by the preparation method described in the above-described technical solution, in skin care products. In this invention, the skin care product preferably includes a cream mask or a moisturizer.

[0049] The technical solutions of this invention will be clearly and completely described below with reference to the embodiments thereof. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0050] This invention uses a four-factor, three-level orthogonal design experiment to determine the prescription of four kinds of traditional Chinese medicinal materials, and a five-factor, four-level orthogonal design experiment to obtain the optimal ratio of the mask matrix. After producing the Bletilla striata and almond moisturizing mask liquid, the moisture content was tested using a skin tester. The stability, physicochemical properties, and bacterial tests of the Bletilla striata and almond moisturizing mask liquid were also performed. After formula and matrix ratio optimization, the finished product achieved a moisture content of 43% after application. There was no significant difference between placing it in an electric thermostatic incubator and a refrigerator, and no layering or floating oil phenomenon was observed. No Staphylococcus aureus or Pseudomonas aeruginosa grew on the mask inoculated on blood agar plates. The mask has a fine and smooth texture, is easy to spread, has a fresh and elegant scent, good moisturizing feel, is sticky but not greasy, and has strong absorption. The Bletilla striata and almond moisturizing mask liquid provided by this invention is a pure natural mask with good moisturizing effect, cold and heat resistance, good stability, and meets the microbial testing standards for cosmetics.

[0051] Conditional filtering

[0052] (1) Optimization of extraction conditions

[0053] Take appropriate amounts of medicinal materials (Bletilla striata, apricot kernel, Kochia scoparia and licorice), grind them into powder using a pulverizer, pass them through a 20-mesh sieve, and then perform water reflux extraction and ethanol reflux extraction respectively.

[0054] Water reflux extraction: Take 5g of herbal powder, add 50mL of distilled water, soak at room temperature for 0.5 hours, use reflux extraction method, heat for 1.5 hours and filter, take the filtrate, leave the filter residue for the next extraction, extract twice in total, combine the two filtrates, wait for the solution to cool to room temperature, seal with plastic wrap, put the herbal extract in the refrigerator for later use.

[0055] Ethanol reflux extraction: Take 5g of herbal powder, add 50mL of 95vol% ethanol solution, soak at room temperature for 0.5 hours, and use the reflux extraction method. After heating and extracting for 1.5 hours, filter, collect the filtrate, and leave the residue for the next extraction. After a total of three extractions, combine the filtrates from the three extractions, let the solution cool to room temperature, seal with plastic wrap, and put the herbal extract in the refrigerator for later use.

[0056] Optimal extraction conditions were optimized by applying the herbal extract to the skin and using a skin analyzer to test the skin's moisture content, oil content, and elasticity to assess the moisturizing properties of the herbal extract. Three measurements were taken, and the average value was calculated to select the optimal extraction solvent.

[0057] Table 1 Selection of Optimal Extraction Conditions for Four Medicinal Herbs

[0058]

[0059]

[0060] Table 1 shows that, based on the values ​​of moisture, oil content, elasticity, and pH, the optimal conditions for extracting the four Chinese medicinal herbs were water extraction. The water extract of *Bletilla striata* had a moisture content of 35%, an oil content of 45.33%, and an elasticity value of 50.67. The water extract of *Prunus armeniaca* had a moisture content of 27%, an oil content of 54%, and an elasticity value of 44.00. The water extract of *Glycyrrhiza uralensis* had a moisture content of 32%, an oil content of 52.67%, and an elasticity value of 48.33. The water extract of *Kochia scoparia* had a moisture content of 34.33%, an oil content of 52.67%, and an elasticity value of 48.33. The pH value of all four water extracts was 6.0, which is closer to the pH value of human face.

[0061] (2) Optimization of drug dosage

[0062] Orthogonal experimental design was used to design different proportions of Bletilla striata aqueous extract, almond aqueous extract, licorice aqueous extract, and Kochia scoparia aqueous extract. The researchers applied the herbal extracts to the skin surface using the mixed extracts of 9 different formulas, and used a skin tester to test the skin surface moisture content, oil content, and elasticity value. The measurements were taken three times and the average value was taken to determine the optimal formula of the mask extract.

[0063] Table 2. Experimental Factor Levels

[0064]

[0065] Table 3. Orthogonal Experiment Table: Four Factors, Three Levels

[0066]

[0067]

[0068] Table 3 shows that when the concentrations of Bletilla striata aqueous extract (7 mL), apricot kernel aqueous extract (6 mL), Kochia scoparia aqueous extract (2 mL), and licorice aqueous extract (3 mL) are combined, the highest measured moisture content (39.33%), oil content (49.33%), and elasticity value (53.00) are achieved. This ratio represents the optimal formulation for the herbal extracts. Range analysis of the four-factor, three-level orthogonal experiment results indicates that the main factor affecting skin moisture content is licorice aqueous extract. Apricot kernel aqueous extract and licorice aqueous extract are important factors affecting skin oil content, while licorice aqueous extract is the main factor affecting skin elasticity value. The effects of Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract, and licorice aqueous extract on moisture content are the most significant, followed by elasticity, and then moisture.

[0069] Table 4. Analysis of Variance for Moisture Content

[0070] Source of variance Sum of Squares of Deviations Degrees of freedom variance F P A 16.200 2 8.1000 0.632 0.563 B 32.101 2 16.051 1.580 0.281 C 3.635 2 1.817 0.122 0.887 D 41.130 2 20.565 2.376 0.174 sum 93.067 8 - - -

[0071] Table 4 shows that the p-values ​​for factors A, B, C, and D are all greater than 0.05, indicating that none of the four factors have a significant individual effect on moisture content. According to traditional Chinese medicine theory, these four factors act as a whole, collectively influencing moisture content.

[0072] Table 5. Analysis of Variance for Oil Content

[0073] Source of variance Sum of Squares of Deviations Degrees of freedom variance F P A 2.532 2 1.266 0.556 0.600 B 5.372 2 2.686 1.490 0.298 C 1.885 2 0.942 0.395 0.690 D 6.4 2 3.200 1.961 0.221 sum 16.189 8 - - -

[0074] As shown in Table 5, the p-values ​​of factors A, B, C, and D are all greater than 0.05, indicating that the individual effects of the four factors on oil content are not significant. According to traditional Chinese medicine theory, the four factors form a whole and jointly affect the oil content.

[0075] Table 6 Elasticity Variance Analysis Table

[0076] Source of variance Sum of Squares of Deviations Degrees of freedom variance F P A 8.173 2 4.087 0.949 0.438 B 9.946 2 4.973 1.240 0.354 C 2.239 2 1.120 0.211 0.815 D 13.649 2 6.845 2.011 0.215 sum 34.008 8 - - -

[0077] As shown in Table 6, the p-values ​​of factors A, B, C, and D are all greater than 0.05. Individually, these four factors have no significant effect on elasticity. According to traditional Chinese medicine theory, these four factors form a whole and jointly affect the elasticity value.

[0078] (3) Optimization of mask liquid matrix

[0079] Orthogonal experimental design was used to design different proportions of white petrolatum, glyceryl mono- and glyceryl distearate, glycerin, Tween-80, and 1,2-butanediol. Researchers analyzed 16 groups of mask liquid samples with different formulations, considering factors such as appearance, texture, hydration, odor, irritation, and absorption. Figure 5 Sensory evaluation was conducted, with a total score of 10 points. The average score of each sensory item was used to determine the optimal formula for the mask liquid base.

[0080] Table 7 Experimental Factor Levels

[0081]

[0082] Table 8. Five-Factor Four-Level Orthogonal Experiment Table

[0083]

[0084]

[0085] As shown in Table 8, the highest score for product k is 9.8. Range analysis reveals that the most significant factor influencing the appearance, texture, hydration, odor, irritation, and absorption of the Bletilla striata and Almond Nourishing Facial Mask is white petrolatum, followed by Tween-80, while mono- and di-stearyl glycerides have the least impact.

[0086] Table 9. Analysis of Variance for Five-Factor, Four-Level Orthogonal Experiment

[0087] Source of variance Sum of Squares of Deviations Degrees of freedom variance F Significance E 3.247 3 1.082 15.601 0.000 F 0.097 3 0.032 0.097 0.960 G 0.232 3 0.077 0.241 0.866 H 0.177 3 0.059 0.181 0.907 I 0.127 3 0.042 0.128 0.941 sum 4.079 15 - - -

[0088] As shown in Table 9, E has a significant impact on the ratio of the mask base. Based on comprehensive analysis, the optimal ratio of the Bletilla striata and almond moisturizing mask base is: 10g white petrolatum, 1.5g mono- and distearate glyceryl esters, 0.75mL 1,2-butanediol, 0.25mL Tween-80, and 3mL glycerin.

[0089] Example 1

[0090] The formula of the Bletilla striata and almond moisturizing facial mask liquid in this embodiment is shown in Table 10. The composition of the compound extract in Table 10 is: 7 mL of Bletilla striata water extract, 6 mL of almond water extract, 2 mL of Kochia scoparia water extract, and 3 mL of licorice water extract.

[0091] The preparation methods for the aqueous extracts of Bletilla striata, apricot kernel, Kochia scoparia, and licorice are as follows:

[0092] Bletilla striata, apricot kernel, Kochia scoparia and licorice were ground into powder using a pulverizer and passed through a 20-mesh sieve to obtain Bletilla striata powder, apricot kernel powder, Kochia scoparia powder and licorice powder.

[0093] Add 50 mL of distilled water to each of the following powders: Bletilla striata powder, apricot kernel powder, Kochia scoparia powder, and licorice powder. Soak for 0.5 hours at room temperature. Use reflux extraction method, heat for 1.5 hours, filter, collect the filtrate, and leave the residue for the next extraction. After two extractions, combine the two filtrates and let the solution cool to room temperature to obtain Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract, and licorice aqueous extract, respectively.

[0094] Table 10 Formula of Bletilla striata and Almond Moisturizing Facial Mask

[0095]

[0096] White petrolatum and mono- and di-stearate glycerides were placed together in a dry 500mL beaker and heated in a water bath. The temperature of the water bath was adjusted to 80℃, and the beaker was placed in the water bath to heat until the two were completely melted, thus obtaining the oil phase.

[0097] Glycerin and the compound extract were placed together in a dry 500mL beaker and heated in a water bath at 80℃ until completely melted. Tween-80 and 1,2-butanediol were then added to obtain the aqueous phase.

[0098] The oil phase was added to the aqueous phase while still hot, and the mixture was stirred rapidly with a glass rod. Methylparaben was added, and the mixture was stirred until homogeneous. The mixture was then cooled to room temperature to obtain the Bletilla striata and almond moisturizing facial mask liquid.

[0099] Test case

[0100] The performance of the Bletilla striata and almond moisturizing facial mask liquid prepared in Example 1 was tested:

[0101] 1. Stability and physicochemical experiments

[0102] 1.1 Heat resistance test

[0103] Heat resistance test procedure: Adjust the electric thermostatic incubator to (40±1)℃, take two samples of Bletilla striata and almond moisturizing facial mask liquid, place one sample in the electric thermostatic incubator for 24 hours, remove it and let it return to room temperature, and compare it with the other sample. Observe whether the color of the sample changes, whether there is any layering or hardness change, and whether it becomes thicker or thinner, in order to judge the heat resistance performance of the Bletilla striata and almond moisturizing facial mask liquid.

[0104] 1.2 Cold Resistance Test

[0105] Cold resistance test procedure: First, adjust the refrigerator to -10℃±1℃. Then, take two samples of Bletilla striata and almond moisturizing facial mask liquid. Place one sample in the refrigerator for 24 hours, then take it out and let it return to room temperature. Compare it with the other sample. Observe whether the color of the sample changes, whether there is layering or hardness, and whether it becomes thicker or thinner. This is to determine the cold resistance performance of the Bletilla striata and almond moisturizing facial mask liquid.

[0106] 1.3 Physicochemical property testing

[0107] Stability: Take a small amount of the prepared Bletilla striata and almond moisturizing facial mask liquid, add it to an EP tube, centrifuge (3500 r / min, 20 min), and observe whether water is released from the sample.

[0108] pH: Take a small amount of the prepared Bletilla striata and almond moisturizing facial mask liquid with a glass rod, apply it to pH test paper, and compare it with the color on the color chart to determine the pH value of the Bletilla striata and almond moisturizing facial mask liquid.

[0109] Stickiness: Apply the Bletilla striata and almond moisturizing facial mask liquid to the back of your hand to check if it feels sticky.

[0110] Table 11 Results of Stability and Physicochemical Properties Experiments

[0111]

[0112] Table 11 shows that the Bletilla striata and almond moisturizing facial mask liquid has suitable viscosity, is easy to apply evenly, and does not easily form pores. At room temperature, the pH of the Bletilla striata and almond moisturizing facial mask liquid meets the relevant standards for facial masks. After being placed at 40℃ and -10℃ for 24 hours, the color and luster of the Bletilla striata and almond moisturizing facial mask liquid showed no significant difference from its initial properties, and there was no layering or floating oil phenomenon, indicating that the Bletilla striata and almond moisturizing facial mask liquid has strong heat and cold resistance. After centrifugation, no water precipitation or layering was observed in the Bletilla striata and almond moisturizing facial mask liquid, indicating that the mask is stable.

[0113] 2. Moisturizing effect test

[0114] The sample of Bletilla striata and almond moisturizing facial mask liquid was evenly applied to the surface of the back of the hand. After the sample of Bletilla striata and almond moisturizing facial mask liquid was completely absorbed by the skin, the change in the moisture content of the skin on the back of the hand was measured with a skin moisture meter within 30 minutes. The measurement was performed at the same location each time, and the average value was taken after measuring the moisture content three times.

[0115] Table 12 Results of Moisturizing Test

[0116]

[0117] As shown in Table 12, the moisture content of the Bletilla striata and almond moisturizing facial mask liquid was 27% before application, indicating good moisturizing properties. One minute after application, the moisture content reached 43%. From 4 to 13 minutes after application, the moisture content stabilized at around 38%, and from 24 to 30 minutes after application, the moisture content was 30%. This is 3% higher than the moisture content before application, demonstrating the good moisturizing properties of the Bletilla striata and almond moisturizing facial mask liquid.

[0118] 3. Microbial testing

[0119] After sterilizing under ultraviolet light in the laminar flow hood for 30 minutes, remove a disposable inoculation loop, dip it into a certain amount of Staphylococcus aureus solution, streak it in a zigzag pattern, and inoculate it onto a blood agar plate. Place the plate in a thermostatic incubator and incubate for 18 hours, observing once to see if bacteria have grown on the plate; observe again after 36 hours. This serves as a positive control 1.

[0120] After UV sterilization in the clean bench for 30 minutes, a certain amount of *Pseudomonas aeruginosa* bacterial suspension was dipped into a disposable inoculation loop and streaked onto a blood agar plate. The plate was then placed in a thermostatic incubator and incubated for 18 hours. Observation was performed once to check for bacterial growth. Observation was performed again after 36 hours. This served as a positive control 2.

[0121] After sterilizing under ultraviolet light in a clean bench for 30 minutes, remove a disposable inoculation loop and use it to pick up a certain amount of Bletilla striata and almond facial mask liquid. Draw a zigzag line and inoculate it onto a blood agar plate. Place the plate in an electric thermostatic incubator and incubate for 18 hours. Observe once to see if bacteria grow on the plate. Observe again after 36 hours. The observation serves as a negative control.

[0122] Table 13 Results of bacterial detection experiments

[0123]

[0124] As shown in Table 13, bacterial detection revealed that after 18 hours of incubation, a small number of yellowish-white Staphylococcus aureus bacteria grew on the blood agar plate of positive control 1. The surface of the bacteria was smooth and free of other microorganisms. After 36 hours of incubation, as... Figure 1 As shown, the colonies darken in color, turning golden yellow. The colonies are large with small protrusions, opaque, and have a smooth surface, without any other bacteria growing on them.

[0125] After 18 hours of incubation, *Pseudomonas aeruginosa* grew on the blood agar plate of positive control 2. Its colonies were grayish-white and showed no signs of contamination. After 36 hours of incubation, if... Figure 2 As shown, the colonies are flat, slightly spreading, and grayish-white.

[0126] After 18 hours of incubation, the Bletilla striata and almond facial mask liquid showed no bacterial growth on blood agar plates, indicating the absence of any contaminating bacteria. After 36 hours of incubation, as... Figure 3 As shown, the blood agar plate contained various bacteria, but no Staphylococcus aureus or Pseudomonas aeruginosa.

[0127] 4. Sensory evaluation

[0128] Twenty volunteers with healthy skin were randomly selected, and an appropriate amount of the Bletilla striata and almond moisturizing facial mask liquid was applied to the back of each hand, covering an area of ​​4 cm². 2 After 30 minutes, the skin condition of the volunteers who had applied the Bletilla striata and almond moisturizing mask liquid to the back of their hands was observed, with the other hand of the same volunteer used as a control. Figure 4 Sensory evaluation was conducted, and the face mask samples were scored out of 10. The tests were conducted for 3 consecutive days, and the average value of the recorded data was taken. See Table 14.

[0129] Appearance and fineness: Take a sample of the prepared Bletilla striata and almond moisturizing facial mask liquid, observe its appearance, apply it to the skin, and use sensory indicators to evaluate its fineness.

[0130] Drying time: The adhesiveness of Bletilla striata and almond moisturizing facial mask liquid is determined by the length of the drying time. Too short or too long a drying time is not suitable.

[0131] Table 14 Results of Sensory Experiments

[0132]

[0133]

[0134] As shown in Table 14, the sensory test results indicate that the Bletilla striata and almond moisturizing facial mask liquid has a fine and smooth texture, is easy to spread, has a fresh and elegant scent, provides good hydration, is sticky but not greasy, and has strong absorption. After applying the Bletilla striata and almond moisturizing facial mask liquid, the volunteers' hands showed more moisturized and fair skin, without any adverse reactions such as redness, rashes, itching, or allergies. Therefore, this mask is gentle and non-irritating to the skin.

[0135] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A facial mask liquid containing Bletilla striata and almond, characterized in that, The raw materials for preparing the Bletilla striata and almond moisturizing facial mask liquid are: 10g white petrolatum, 1.5g mono- and distearate glyceryl monostearate, 0.02g methylparaben, 3mL glycerin, 0.75mL butylene glycol, 0.25mL Tween-80, and 18mL compound extract. The compound extract consists of Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract, and licorice aqueous extract; the volume ratio of the Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract, and licorice aqueous extract is 7:6:2:

3.

2. The Bletilla striata and almond moisturizing facial mask liquid according to claim 1, characterized in that, The preparation methods for Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract, or licorice aqueous extract include: The Chinese medicinal materials to be extracted were soaked in water to obtain a mixed system; the Chinese medicinal materials to be extracted were Bletilla striata powder, apricot kernel powder, Kochia scoparia powder or licorice powder; The mixture was subjected to a first heating and reflux process, followed by a first solid-liquid separation, to obtain a first filtrate and a first filter residue. The first filter residue is heated and refluxed a second time, and after the second solid-liquid separation, the second filtrate is obtained; The first filtrate and the second filtrate are mixed to obtain Bletilla striata aqueous extract, apricot kernel aqueous extract, Kochia scoparia aqueous extract or licorice aqueous extract, respectively.

3. The Bletilla striata and almond moisturizing facial mask liquid according to claim 2, characterized in that, The mass ratio of the medicinal materials to be extracted to water is 1~7:5~20.

4. The Bletilla striata and almond moisturizing facial mask liquid according to claim 2, characterized in that, The soaking temperature is room temperature, and the soaking time is 0-5 hours.

5. The Bletilla striata and almond moisturizing facial mask liquid according to claim 2, characterized in that, The duration of the first and second heating reflux is independently 0.5 to 5 hours.

6. A method for preparing the Bletilla striata and almond facial mask liquid according to any one of claims 1 to 5, comprising the following steps: White petrolatum and glyceryl mono- and distearate stearates were first mixed to obtain the oil phase; Glycerin, butanediol, Tween-80, and the composite extract were mixed a second time to obtain an aqueous phase. The oil phase was added to the aqueous phase, and methylparaben was added to obtain Bletilla striata and almond moisturizing facial mask liquid.

7. The preparation method according to claim 6, characterized in that, The temperature of the first mixture is 70~90℃.

8. The preparation method according to claim 6, characterized in that, The temperature of the second mixture is 70~90℃.

9. The use of the Bletilla striata and almond moisturizing facial mask liquid according to any one of claims 1 to 5 or the Bletilla striata and almond moisturizing facial mask liquid prepared by the preparation method according to any one of claims 6 to 8 in the preparation of skin care products.

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