Oil-control washing mask and preparation method thereof

Abstract

The invention provides an oil-control washing mask and a preparation method thereof, and the oil-control washing mask comprises the following components in percentage by weight: 88-90% of a solvent, 5-6% of a humectant, 0.3-0.4% of a thickener, 0.45-0.95% of an emulsifier, 0.2-0.6% of an antioxidant, 0.03-0.1% of a chelating agent, 0.1-0.2% of a pH regulator, 3-4% of a skin conditioner and 0.1-0.5% of salt mine mud. The oil-control washing mask obtained by the scheme is fresh and cool in texture and not greasy, and can take away skin dirt when being washed off, so that nutritional ingredients are easier to absorb, water-oil balance of the skin is maintained, and no burden is brought to the skin.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical processing, and particularly relates to an oil-controlling washable facial mask and a preparation method thereof. Background Art

[0002] Facial masks are the general trend of cosmetics today. Therefore, if you want to stand out in the red ocean, you need to: 1) continue to explore application scenarios to meet more scenario needs and experiences of consumers; 2) innovate dosage forms, and use them together under specific needs to give consumers a bright feeling. According to data, the sales of patch masks on the promotional platform account for 52%, but by comparing the sales volume of each year, it is found that the sales growth rate of smear-type washable masks is 19% higher than that of patch masks. The main reasons are: 1) Washable masks have a higher degree of adherence, which is unattainable by other types of masks; 2) The effective essence of washable masks can be directly applied to the face, which has better cleaning, hydrating, moisturizing, and oil control effects, and the nutrients are more easily absorbed; 3) The use range of washable masks is not limited. They can be used on the neck, chest, back, knees or elbows. They can also be used for local reinforcement and special parts of the face, which is more convenient to use; 4) Washable masks are environmentally friendly; the above advantages are enough to encourage consumers to pay for high-quality products.

[0003] Among various skin problems, oily and sensitive skin is a major problem. There are many reasons for oily skin, especially in today's fast-paced life and high pressure, which will inevitably cause problems such as lack of sleep and endocrine disorders; or because the skin itself has strong oil secretion. At present, there are many acid-brushing products on the market. They mainly achieve oil control by exfoliating and unclogging pores. Although the effect is significant in the short term, long-term use is not friendly to users with sensitive skin. Summary of the invention

[0004] The purpose of the embodiments of this specification is to provide an oil-controlling washable facial mask and a preparation method thereof.

[0005] To solve the above technical problems, the embodiments of the present application are implemented in the following ways:

[0006] In a first aspect, the present application provides an oil-control washable facial mask, comprising, by weight percentage:

[0007] 88-90% solvent, 5-6% moisturizer, 0.3-0.4% thickener, 0.45-0.95% emulsifier, 0.2-0.6% antioxidant, 0.03-0.1% chelating agent, 0.1-0.2% pH adjuster, 3-4% skin conditioner and 0.1-0.5% salt mine mud.

[0008] In one embodiment, the moisturizing agent includes at least one of glycerin, sodium hyaluronate, allantoin, 1,2-hexanediol, and panthenol.

[0009] In one embodiment, the thickener includes at least one of ammonium acryloyldimethyltaurate / VP copolymer and carbomer.

[0010] In one embodiment, the emulsifier includes at least one of hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and cetearyl alcohol.

[0011] In one embodiment, the antioxidant is p-hydroxyacetophenone.

[0012] In one embodiment, the pH adjusting agent is arginine.

[0013] In one embodiment, the skin conditioning agent includes at least one of squalane, isohexadecane, menthyl lactate, bisabolol / ginger (ZINGIBER OFFICINALE) root extract, and lactobacillus / soy milk fermentation product filtrate.

[0014] In a second aspect, the present application provides a method for preparing the oil-control washable facial mask according to the first aspect, the method comprising:

[0015] Weigh the solvent, moisturizer, thickener, emulsifier, antioxidant, chelating agent, pH regulator, skin conditioner and salt mine mud according to weight proportion; the moisturizer includes high-temperature moisturizer and low-temperature moisturizer; the emulsifier includes a main emulsifier and an auxiliary emulsifier; the skin conditioner includes an oil phase part and a part to be added at low temperature after emulsification;

[0016] Add the solvent to the emulsifying kettle, continue to add the high-temperature moisturizing agent and the main emulsifier, thickener, chelating agent and salt mine slurry to the emulsifying kettle, stir and heat to 80-85° C., vacuum homogenize for 2-4 minutes, keep warm and stir for 30 minutes, until the material body is completely dissolved, to obtain the first material body;

[0017] Mix the co-emulsifier and the oil phase part of the skin conditioner evenly, and heat to 75-80° C. to obtain a standby material;

[0018] Add the reserved material into the emulsifying kettle containing the first material, start vacuum homogenization and stirring, and vacuum homogenize for 4-6 minutes until the material is uniform to obtain the second material;

[0019] The second material in the emulsifying kettle is stirred and cooled to 70-75°C, an antioxidant is added, and stirred for 5-10 minutes until the material is uniform, to obtain a third material;

[0020] When the third material is cooled to 45-50°C, a low-temperature moisturizer, a portion of the skin conditioner that needs to be emulsified and a pH adjuster are added, and the mixture is stirred in vacuum for 10-15 minutes until the material is evenly mixed to obtain an oil-controlling washable facial mask.

[0021] In a third aspect, the present application provides a method for preparing the oil-control washable facial mask according to the first aspect, the method comprising:

[0022] Weigh the solvent, moisturizer, thickener, emulsifier, antioxidant, chelating agent, pH regulator, skin conditioner and salt mine mud according to weight proportion; the moisturizer includes a high-temperature moisturizer; the emulsifier includes a primary emulsifier and an auxiliary emulsifier; the skin conditioner includes an oil phase part and a part to be added at low temperature after emulsification;

[0023] Add the solvent to the emulsifying kettle, continue to add the high-temperature moisturizing agent and the main emulsifier, thickener, chelating agent and salt mine slurry to the emulsifying kettle, stir and heat to 80-85° C., vacuum homogenize for 2-4 minutes, keep warm and stir for 30 minutes, until the material body is completely dissolved, to obtain the first material body;

[0024] Mix the co-emulsifier and the oil phase part of the skin conditioner evenly, and heat to 75-80° C. to obtain a standby material;

[0025] Add the reserved material into the emulsifying kettle containing the first material, start vacuum homogenization and stirring, and vacuum homogenize for 4-6 minutes until the material is uniform to obtain the second material;

[0026] The second material in the emulsifying kettle is stirred and cooled to 70-75°C, an antioxidant is added, and stirred for 5-10 minutes until the material is uniform, to obtain a third material;

[0027] When the temperature of the third material is reduced to 45-50°C, the skin conditioner to be emulsified and the pH adjuster are added at low temperature, and the mixture is stirred in vacuum for 10-15 minutes until the material is evenly mixed to obtain an oil-controlling washable facial mask.

[0028] In a fourth aspect, the present application provides a method for preparing the oil-control washable facial mask according to the first aspect, the method comprising:

[0029] Weigh the solvent, moisturizer, thickener, emulsifier, antioxidant, chelating agent, pH regulator, skin conditioner and salt mine mud according to weight proportion; the moisturizer includes a low-temperature moisturizer; the emulsifier includes a primary emulsifier and an auxiliary emulsifier; the skin conditioner includes an oil phase part and a part to be added at low temperature after emulsification;

[0030] Add the solvent to the emulsifying kettle, continue to add the main emulsifier, thickener, chelating agent and salt mine slurry to the emulsifying kettle, stir and heat to 80-85°C, vacuum homogenize for 2-4 minutes, keep warm and stir for 30 minutes, until the material is completely dissolved, to obtain the first material;

[0031] Mix the co-emulsifier and the oil phase part of the skin conditioner evenly, and heat to 75-80° C. to obtain a standby material;

[0032] Add the reserved material into the emulsifying kettle containing the first material, start vacuum homogenization and stirring, and vacuum homogenize for 4-6 minutes until the material is uniform, to obtain the second material;

[0033] The second material in the emulsifying kettle is stirred and cooled to 70-75°C, an antioxidant is added, and stirred for 5-10 minutes until the material is uniform, to obtain a third material;

[0034] When the third material is cooled to 45-50°C, a low-temperature moisturizer, a portion of the skin conditioner that needs to be emulsified and a pH adjuster are added, and the mixture is stirred in vacuum for 10-15 minutes until the material is evenly mixed to obtain an oil-controlling washable facial mask.

[0035] It can be seen from the technical solutions provided in the above embodiments of this specification that the oil-control water-washable facial mask provided by the solution has a refreshing and non-greasy texture. It can take away skin dirt when washed off, making the nutrients more easily absorbed, maintaining the water-oil balance of the skin, and not burdening the skin. Salt mine mud has excellent functional ingredients for water-washable facial masks, rich in nutrients, and rich in a variety of mineral crystal ions, which have the effects of deep cleaning, moisturizing, and conditioning the skin; its moisturizing performance, oil control performance, skin fineness, mild performance, and skin feel after use are significant, and it has obvious skin care and health care effects. According to the characteristics of each component, the research process optimizes the ingredient ratio to the best. At the same time, adding a suitable salt mine mud dry powder content can not only ensure the efficacy of the product, but also maintain the stability of the system. On the basis of meeting consumer needs, it effectively opens up broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 A schematic diagram of the process for preparing the oil-control washable facial mask provided in the present application. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0039] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0040] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present application description without departing from the scope or spirit of the present application. Other embodiments derived from the present application description will be apparent to those skilled in the art. The present application description and examples are exemplary only.

[0041] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0042] Among various skin problems, oily and sensitive skin is a major problem. At present, the market mainly uses acid-based products for oily and sensitive skin. This type of product mainly achieves oil control by exfoliating and unclogging pores. Although the effect is significant in the short term, long-term use is not friendly to users with sensitive skin.

[0043] Research has found that salt mine mud is rich in 38 mineral elements needed by the human body, including potassium, sodium, calcium, magnesium, phosphorus, chlorine, fluorine, iodine, carbonate, sulfate, etc., 17% organic matter (including humic acid, active fulvic acid, protein, polysaccharide, fat, vitamin E), 16 kinds of amino acids, and a large amount of colloidal substances. This special composition is different from other soil (volcanic mud, kaolin, bentonite, diatomaceous earth, etc.) skin care products. Salt mine mud has become a new favorite in oil control and cleansing, healthy skin care, and health care. Therefore, using the characteristics of salt mine mud itself and assisting other active ingredients will more effectively alleviate problems such as excessive oil secretion of the skin and return the skin to a refreshing and natural state.

[0044] Based on the above, the present application provides an oil-controlling water-washable facial mask, which can effectively regulate the oil secretion of the skin while replenishing moisture and maintaining the moisture of the skin; consumers can adopt the correct usage method to experience and obtain the best product usage effect.

[0045] The present invention is further described in detail below with reference to the embodiments.

[0046] Example 1

[0047] A method for preparing an oil-controlling washable facial mask comprises the following steps:

[0048] Step 1. Weigh the raw materials according to weight proportion: 88.99% solvent, 5.63% moisturizer, 0.4% thickener, 0.95% emulsifier, 0.5% antioxidant, 0.05% chelating agent, 0.15% pH adjuster, 3.22% skin conditioner and 0.11% salt mine mud.

[0049] Specifically, the solvent may be water.

[0050] The moisturizer contains both excellent moisturizing ingredients and good transdermal absorption promoters, which can effectively calm inflammation and accelerate wound healing. In one embodiment, the moisturizer can be at least one of glycerol, sodium hyaluronate, allantoin, 1,2-hexanediol, and panthenol, wherein glycerol, sodium hyaluronate, and allantoin are high-temperature moisturizers, and 1,2-hexanediol and panthenol are low-temperature moisturizers. In this embodiment, the moisturizer is shown as a mixture containing glycerol, sodium hyaluronate, allantoin, 1,2-hexanediol, and panthenol. Exemplarily, the moisturizer includes 4% glycerol, 0.02% sodium hyaluronate, 0.11% allantoin, 0.5% 1,2-hexanediol, and 1% panthenol.

[0051] A thickener is a substance that can increase the viscosity of latex or liquid, and can increase the viscosity of a system, so that the system maintains a uniform and stable suspension state or an emulsified state, or forms a gel. In one embodiment, the thickener includes at least one of ammonium acryloyldimethyltaurate / VP copolymer and carbomer. In the embodiment of the present application, the thickener is shown as a mixture containing 0.2% ammonium acryloyldimethyltaurate / VP copolymer and 0.2% carbomer. Among them, carbomer can be carbomer U30, carbomer U21, carbomer 980, carbomer 981, etc. In the embodiment of the present application, carbomer is shown as carbomer U30.

[0052] Emulsifiers are a type of substance that can make a mixed liquid of two or more immiscible components form a stable emulsion. Emulsifiers include at least one of hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and cetearyl alcohol. Among them, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer has excellent effects of emulsification and thickening, and serves as the main emulsifier; the cetearyl alcohol is an emulsification stabilizer, and serves as an auxiliary emulsifier. In the embodiments of the present application, the emulsifier is shown as a mixture containing 0.45% of hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and 0.5% of cetearyl alcohol.

[0053] The antioxidant is p-hydroxyacetophenone and the pH adjuster is arginine.

[0054] Chelating agents play a stabilizing role in cosmetics and have a certain synergistic effect on the preservative system and the antioxidant system. In one embodiment, the chelating agent is disodium EDTA.

[0055] The skin conditioner includes at least one of squalane, isohexadecane, menthol lactate, bisabolol / ginger (Zingiber Officinale) root extract, and lactobacillus / soy milk fermentation product filtrate. Among them, squalane and isohexadecane have the effects of promoting epidermal skin metabolism, nourishing and moisturizing, and enhancing the barrier; the menthol lactate has the effects of cooling the skin, sterilizing and anti-inflammatory, and its cooling effect is mild and lasting, and the smell is light and fragrant; the bisabolol / ginger (Zingiber Officinale) root extract and lactobacillus / soy milk fermentation product filtrate have soothing, anti-allergic and repairing effects. The skin conditioner can be divided into an oil phase part and a low-temperature addition part after emulsification. Among them, squalane, isohexadecane, and bisabolol / ginger (Zingiber Officinale) root extract are the oil phase part of the skin conditioner, and the lactobacillus / soy milk fermentation product filtrate and menthol lactate are the low-temperature addition part of the skin conditioner after emulsification. In the embodiment of the present application, the skin conditioning agent includes a mixture of squalane, isohexadecane, menthol lactate, bisabolol / ginger (ZINGIBER OFFICINALE) root extract, and lactobacillus / soy milk fermentation product filtrate. Exemplarily, the skin conditioning agent includes 1% squalane, 1% isohexadecane, 0.11% menthol lactate, 0.11% bisabolol / ginger (ZINGIBER OFFICINALE) root extract, and 1% lactobacillus / soy milk fermentation product filtrate.

[0056] Salt mine mud has the functions of skin cleansing and regulating oil secretion. Salt mine mud can be collected from the salt lake in Yuncheng, Shanxi Province. It is rich in various minerals needed by the human body, 17% organic matter, 16 kinds of amino acids, and a large amount of colloidal substances.

[0057] Step 2: Add water to the emulsifying kettle, and continue to add glycerin, sodium hyaluronate, allantoin, ammonium acryloyldimethyltaurate / VP copolymer, carbomer U30, hydroxyethyl acrylate / sodium acryloyldimethyltaurate copolymer, disodium EDTA, and salt mine mud; stir and heat to 80-85° C., vacuum homogenize for 2-4 minutes, and keep warm and stir for 30 minutes until the material is completely dissolved to obtain the first material.

[0058] Step 3: Mix cetearyl alcohol, squalane, isohexadecane, and bisabolol / ginger (Zingiber officinale) root extract, stir evenly, and heat to 75-80° C. to obtain standby materials for standby use.

[0059] Step 4: Slowly add the spare materials in step 3 to the emulsifying kettle in step 2, start vacuum homogenization and stirring, and vacuum homogenize for 4-6 minutes until the material is uniform to obtain the second material.

[0060] Step 5, stirring the second material in the emulsifying kettle in step 4 and cooling it to 70-75° C., adding p-hydroxyacetophenone, and stirring for 5-10 minutes until the material is uniform, to obtain a third material.

[0061] Step 6: When the third material of step 5 is cooled to 45-50°C, 1,2-hexanediol, panthenol, lactobacillus / soy milk fermentation product filtrate, menthol lactate, and arginine are added, and vacuum stirring is performed for 10-15 minutes until the materials are evenly mixed. The preparation process is completed to obtain an oil-control washable facial mask.

[0062] Example 2

[0063] A method for preparing an oil-controlling washable facial mask comprises the following steps:

[0064] Step 1

[0065] The solvent is 88.8%, the moisturizer is 5.63%, the thickener is 0.4%, the emulsifier is 0.95%, the antioxidant is 0.5%, the chelating agent is 0.1%, the pH regulator is 0.1%, the skin conditioner is 3.22% and the salt mine mud is 0.3%.

[0066] In this embodiment, the moisturizing agent only includes high temperature moisturizing agents, namely glycerin, sodium hyaluronate, and allantoin.

[0067] Step 2 to step 5 are the same as those in Example 1.

[0068] Step 6: When the third material of step 5 is cooled to 45-50°C, add lactobacillus / soy milk fermentation product filtrate, menthol lactate, and arginine, and vacuum stir for 10-15 minutes until the material is evenly mixed. The preparation process is completed to obtain an oil-control washable facial mask.

[0069] Example 3

[0070] A method for preparing an oil-controlling washable facial mask comprises the following steps:

[0071] Step 1: Weigh 88.69% of solvent, 5.63% of moisturizer, 0.3% of thickener, 0.83% of emulsifier, 0.5% of antioxidant, 0.1% of chelating agent, 0.2% of pH regulator, 3.5% of skin conditioner and 0.25% of salt mine slurry according to weight proportion.

[0072] In this embodiment, the moisturizing agent only includes low-temperature moisturizing agents, namely 1,2-hexanediol and panthenol.

[0073] Step 2: Add water to the emulsifying kettle, and continue to add ammonium acryloyldimethyltaurate / VP copolymer, carbomer U30, hydroxyethyl acrylate / sodium acryloyldimethyltaurate copolymer, disodium EDTA, and salt mine mud; stir and heat to 80-85° C., vacuum homogenize for 2-4 minutes, and keep stirring for 30 minutes until the material is completely dissolved to obtain the first material.

[0074] Steps 3 to 6 are the same as those in Example 1.

[0075] Example 4

[0076] A method for preparing an oil-controlling washable facial mask comprises the following steps:

[0077] Step 1: Weigh 88% of solvent, 6% of moisturizer, 0.4% of thickener, 0.95% of emulsifier, 0.2% of antioxidant, 0.03% of chelating agent, 0.15% of pH regulator, 4% of skin conditioner and 0.27% of salt mine slurry according to weight proportion.

[0078] In this embodiment, the moisturizing agent includes a high-temperature moisturizing agent and a low-temperature moisturizing agent.

[0079] Step 2 to step 6 are the same as those in Example 1.

[0080] Example 5

[0081] A method for preparing an oil-controlling washable facial mask comprises the following steps:

[0082] Step 1: Weigh 90% of solvent, 5.5% of moisturizer, 0.35% of thickener, 0.45% of emulsifier, 0.4% of antioxidant, 0.06% of chelating agent, 0.14% of pH regulator, 3% of skin conditioner and 0.1% of salt mine mud according to weight proportion.

[0083] In this embodiment, the moisturizing agent includes a high-temperature moisturizing agent and a low-temperature moisturizing agent.

[0084] Step 2 to step 6 are the same as those in Example 1.

[0085] Example 6

[0086] A method for preparing an oil-controlling washable facial mask comprises the following steps:

[0087] Step 1: Weigh 89% of solvent, 5% of moisturizer, 0.3% of thickener, 0.75% of emulsifier, 0.6% of antioxidant, 0.1% of chelating agent, 0.2% of pH regulator, 3.55% of skin conditioner and 0.5% of salt mine slurry according to weight proportion.

[0088] In this embodiment, the moisturizing agent includes a high-temperature moisturizing agent and a low-temperature moisturizing agent.

[0089] Step 2 to step 6 are the same as those in Example 1.

[0090] Evaluation tests were conducted on the salt mine mud oil-control washable facial masks prepared in Examples 1 to 6:

[0091] Testing method: 30 healthy male / female testers were selected, with an age range of 25-60 years old and an average age of 34.3 years old, including 5 males and 25 females. The before-and-after control method was used, before using the product and after using the product for 28 days, and the tester self-evaluation questionnaire method and human efficacy experimental data were used to provide a basis for the product's efficacy claims.

[0092] Test indicators: Table 1 shows the self-assessment questionnaire of the testers, and Table 2 shows the test indicators of the testers.

[0093] Table 1 Tester self-assessment questionnaire

[0094]

[0095] Table 2 Tester detection indicators

[0096]

[0097]

[0098] Testing environment: The test environment temperature is 20-22℃, humidity is 40-60%RH.

[0099] Testing process: As shown in Table 3, it is the testing process for testers; as shown in Table 4, it is the self-assessment process for consumers.

[0100] Table 3 Tester detection process

[0101]

[0102]

[0103] Table 4 Consumer self-assessment process

[0104]

[0105] Statistical methods

[0106] 1) Δ (difference) after 28 days of using the product = D28 - D0.

[0107] 2)

[0108] Wherein, D0 is the basic value of skin parameters before using the product in the test area; D28 is the value of skin parameters after using the product for 28 days in the test area. Mean() is the average value of all testers.

[0109] Test results

[0110] (1) Sample completion status

[0111] When the salt mine mud content in the oil-control washable mask was 0.11%, 0.3%, and 0.5%, 31 testers were enrolled respectively, and finally 30 testers were counted, including 5 males and 25 females. The age range was 25-60 years old, with an average age of 34.3 years old. The test samples were used on the face according to the product usage requirements.

[0112] (2) Product usage feedback

[0113] After the testers used the product as required, they were questioned, examined, and their records were kept of any skin reactions or systemic adverse reactions they had during the test. According to the 2015 edition of the "Technical Specifications for Safety of Cosmetics", the adverse reaction record results showed that no adverse reactions occurred.

[0114] (3) Instrument test results and statistical analysis results

[0115] Oil-control wash-off mask containing 0.11% salt mine mud

[0116] 1) Detection of transepidermal water loss value: Before using the product and after using the product for 28 days, the transepidermal water loss of the test subjects is shown in Table 5; the improvement rate of transepidermal water loss of the test subjects is shown in Table 6.

[0117] Table 5 Transepidermal water loss of test subjects

[0118]

[0119] Table 6 Improvement rate of transepidermal water loss of test subjects

[0120] Product Name Improvement rate after using the product for 28 days Oil-control wash-off mask containing 0.11% salt mine mud 10.54

[0121] According to Tables 5 and 6, after using the oil-control washable mask containing 0.11% salt mine mud for 28 days, the transepidermal water loss value of the test subject's cheek decreased by 10.54%. The transepidermal water loss value decreased, the skin water loss decreased, and the barrier function improved.

[0122] 2) Skin oil content detection: The skin oil content of the test subjects before using the product and after using the product for 28 days is shown in Table 7; the improvement rate of the skin oil content of the test subjects is shown in Table 8.

[0123] Table 7 Test subjects' skin oil content

[0124]

[0125] Table 8. Improvement rate of skin oil content of test subjects

[0126] Product Name Improvement rate after using the product for 28 days Oil-control wash-off mask containing 0.11% salt mine mud 12.68

[0127] According to Tables 7 and 8, after using the oil-control washable mask containing 0.11% salt mine mud for 28 days, the skin oil content on the cheeks of the test subjects decreased by 12.68%. The skin oil content decreased, and the product has an oil-control effect.

[0128] The test results of the above two indicators show that after using the oil-control washable mask containing 0.11% salt mine mud for 28 days continuously, the transepidermal water loss value of the test subject's cheek decreased by 10.54%, and the skin oil content decreased by 12.68%.

[0129] Oil-control wash-off mask containing 0.3% salt mine mud

[0130] 1) Detection of transepidermal water loss value: Before using the product and after using the product for 28 days, the transepidermal water loss of the test subjects is shown in Table 9; the improvement rate of transepidermal water loss of the test subjects is shown in Table 10.

[0131] Table 9 Transepidermal Water Loss of Test Subjects

[0132]

[0133] Table 10 Improvement rate of transepidermal water loss of test subjects

[0134] Product Name Improvement rate after using the product for 28 days Oil-control wash-off mask containing 0.3% salt mine mud 10.91

[0135] According to Tables 7 and 8, after using the oil-control washable mask containing 0.3% salt mine mud for 28 days, the transepidermal water loss value of the test subject's cheek decreased by 10.91%. The transepidermal water loss value decreased, the skin water loss decreased, and the barrier function improved.

[0136] 2) Skin oil content detection: The skin oil content of the test subjects before using the product and after using the product for 28 days is shown in Table 11; the improvement rate of the skin oil content of the test subjects is shown in Table 12.

[0137] Table 11 Test subjects' skin oil content

[0138]

[0139] Table 12 Improvement rate of skin oil content of test subjects

[0140] Product Name Improvement rate after using the product for 28 days Oil-control wash-off mask containing 0.3% salt mine mud 12.80

[0141] According to Tables 11 and 12, after using the oil-control washable mask containing 0.3% salt mine mud for 28 days, the skin oil content on the cheeks of the test subjects decreased by 12.80%. The skin oil content decreased, and the product has an oil-control effect.

[0142] The test results of the above two indicators show that after using the oil-control washable mask containing 0.3% salt mine mud for 28 days continuously, the transepidermal water loss value of the test subject's cheek decreased by 10.91%, and the skin oil content decreased by 12.80%.

[0143] Oil-control wash-off mask containing 0.5% salt mine mud

[0144] 1) Detection of transepidermal water loss value: Before using the product and after using the product for 28 days, the transepidermal water loss of the test subjects is shown in Table 13; the improvement rate of transepidermal water loss of the test subjects is shown in Table 14.

[0145] Table 13 Transepidermal water loss of test subjects

[0146]

[0147] Table 14 Improvement rate of transepidermal water loss of test subjects

[0148] Product Name Improvement rate after using the product for 28 days Oil-control wash-off mask containing 0.5% salt mine mud 11.17

[0149] According to Tables 13 and 14, after using the oil-control washable mask containing 0.5% salt mine mud for 28 days, the transepidermal water loss value of the test subject's cheek decreased by 11.17%. The transepidermal water loss value decreased, the skin water loss decreased, and the barrier function improved.

[0150] 2) Skin oil content detection: The skin oil content of the test subjects before using the product and after using the product for 28 days is shown in Table 15; the improvement rate of the skin oil content of the test subjects is shown in Table 16.

[0151] Table 15 Test subjects' skin oil content

[0152]

[0153] Table 16 Improvement rate of skin oil content of test subjects

[0154] Product Name Improvement rate after using the product for 28 days Oil-control wash-off mask containing 0.5% salt mine mud 12.99

[0155] According to Tables 13 and 14, after using the oil-control washable mask containing 0.5% salt mine mud for 28 days, the skin oil content on the cheeks of the test subjects decreased by 12.99%. The skin oil content decreased, and the product has an oil-control effect.

[0156] The test results of the above two indicators show that after using the oil-control washable mask containing 0.5% salt mine mud for 28 days continuously, the transepidermal water loss value of the test subject's cheek decreased by 11.17%, and the skin oil content decreased by 12.99%.

[0157] (4) Testers use the test

[0158] The testers' evaluation after using the Salt Mine Mud Oil Control Washable Mask for 28 days is as follows: as shown in Table 17.

[0159] Table 17 Testers' evaluation after using the product oil-control washable mask for 28 days

[0160] Evaluation indicators Evaluation results Testers felt that their skin felt clean and not tight after using the product 100％ Testers felt that the oiliness of the skin was alleviated after using the product 100％ The testers felt that their acne spots became smaller after using the product 93.3％ Testers felt that the skin felt light, translucent and soft after using the product 100％ The testers were satisfied with the skin effect after using the product 100％

[0161] After using the product as per the instructions for 28 days, 100% of the testers believed that their skin felt clean and not tight after using the product; 100% of the testers believed that their skin oiliness was alleviated after using the product; 93.3% of the testers believed that their skin acne became smaller after using the product; 100% of the testers believed that their skin felt light, translucent and soft after using the product; 100% of the testers were satisfied with the skin effect after using the product.

[0162] In summary, after using the oil-control washable facial mask provided by the present application for 28 consecutive days, 30 testers had no adverse skin reactions, and the product was used continuously for 28 days and had the effects of moisturizing, oil control and acne removal.

[0163] Product safety evaluation

[0164] After the tester uses the product as required, the tester is asked, examined, and records are made of any skin reactions or systemic adverse reactions during the test, including the manifestation, time of occurrence, treatment measures, and outcome of the adverse events, and a judgment is made on the relationship between the adverse events and the samples used, as shown in Table 18 below:

[0165] Table 18 Testers' evaluation after using the oil-control washable mask for 28 days

[0166] Skin reactions Grading D0 D28 No response 0 30 cases 30 cases Faint erythema 1 0 cases 0 cases Erythema, infiltration, papules 2 0 cases 0 cases Erythema, edema, papules, blisters 3 0 cases 0 cases Erythema, edema, bullae 4 0 cases 0 cases

[0167] With reference to the grading standards for adverse skin reactions in human trial tests specified in the 2015 edition of the “Technical Specifications for Safety of Cosmetics”, a human trial study was conducted on 30 testers, and no adverse skin reactions were observed.

[0168] Product stability evaluation

[0169] The salt mine mud oil-control washable facial mask obtained in the implementation case was packaged into 30g bottles each, and a total of 10 bottles were packaged. Every two bottles were labeled with a different label. Stability tests were conducted for 6 months under five environments (room temperature, accelerated aging, high temperature, low temperature, and high and low temperature). The results are shown in Table 19 below:

[0170] Table 19 Study on the stability of salt mine mud oil-control washable mask

[0171]

[0172] The investigation results showed that the product's pH, viscosity and sensory visual inspection (color, smell, skin feel) and other test indicators had no significant changes after 6 months.

[0173] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0174] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

Claims

1. An oil-controlling washable facial mask, characterized in that: In terms of weight percentage, it includes: 88-90% solvent, 5-6% moisturizer, 0.3-0.4% thickener, 0.45-0.95% emulsifier, 0.2-0.6% antioxidant, 0.03-0.1% chelating agent, 0.1-0.2% pH adjuster, 3-4% skin conditioner and 0.1-0.5% salt mine mud.

2. The oil-control washable facial mask according to claim 1, characterized in that: The moisturizing agent includes at least one of glycerin, sodium hyaluronate, allantoin, 1,2-hexanediol and panthenol.

3. The oil-control washable facial mask according to claim 1, characterized in that: The thickener includes at least one of ammonium acryloyldimethyltaurate / VP copolymer and carbomer.

4. The oil-control washable facial mask according to claim 1, characterized in that: The emulsifier includes at least one of hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and cetearyl alcohol.

5. The oil-control washable facial mask according to claim 1, characterized in that: The antioxidant is p-hydroxyacetophenone.

6. The oil-control washable facial mask according to claim 1, characterized in that: The pH regulator is arginine.

7. The oil-control washable facial mask according to claim 1, characterized in that: The skin conditioning agent includes at least one of squalane, isohexadecane, menthol lactate, bisabolol / ginger (ZINGIBER OFFICINALE) root extract, and lactobacillus / soy milk fermentation product filtrate.

8. A method for preparing the oil-controlling washable facial mask according to any one of claims 1 to 7, characterized in that: The method comprises: Weigh the solvent, moisturizer, thickener, emulsifier, antioxidant, chelating agent, pH regulator, skin conditioner and salt mine mud according to weight proportion; the moisturizer includes high-temperature moisturizer and low-temperature moisturizer; the emulsifier includes a main emulsifier and an auxiliary emulsifier; the skin conditioner includes an oil phase part and a part to be added at low temperature after emulsification; Add the solvent to the emulsifying kettle, continue to add the high-temperature moisturizing agent and the main emulsifier, thickener, chelating agent and salt mine slurry to the emulsifying kettle, stir and heat to 80-85° C., vacuum homogenize for 2-4 minutes, keep warm and stir for 30 minutes, until the material body is completely dissolved, to obtain the first material body; Mix the co-emulsifier and the oil phase part of the skin conditioner evenly, and heat to 75-80° C. to obtain a standby material; Add the reserved material into the emulsifying kettle containing the first material, start vacuum homogenization and stirring, and vacuum homogenize for 4-6 minutes until the material is uniform to obtain the second material; The second material in the emulsifying kettle is stirred and cooled to 70-75°C, an antioxidant is added, and stirred for 5-10 minutes until the material is uniform, to obtain a third material; When the third material is cooled to 45-50°C, a low-temperature moisturizer, a portion of the skin conditioner that needs to be emulsified and a pH adjuster are added, and the mixture is stirred in vacuum for 10-15 minutes until the material is evenly mixed to obtain an oil-controlling washable facial mask.

9. A method for preparing the oil-controlling washable facial mask according to any one of claims 1 to 7, characterized in that: The method comprises: Weigh the solvent, moisturizer, thickener, emulsifier, antioxidant, chelating agent, pH regulator, skin conditioner and salt mine mud according to weight proportion; the moisturizer includes a high-temperature moisturizer; the emulsifier includes a primary emulsifier and an auxiliary emulsifier; the skin conditioner includes an oil phase part and a part to be added at low temperature after emulsification; Add the solvent to the emulsifying kettle, continue to add the high-temperature moisturizing agent and the main emulsifier, thickener, chelating agent and salt mine slurry to the emulsifying kettle, stir and heat to 80-85° C., vacuum homogenize for 2-4 minutes, keep warm and stir for 30 minutes, until the material body is completely dissolved, to obtain the first material body; Mix the co-emulsifier and the oil phase part of the skin conditioner evenly, and heat to 75-80° C. to obtain a standby material; Add the reserved material into the emulsifying kettle containing the first material, start vacuum homogenization and stirring, and vacuum homogenize for 4-6 minutes until the material is uniform to obtain the second material; The second material in the emulsifying kettle is stirred and cooled to 70-75°C, an antioxidant is added, and stirred for 5-10 minutes until the material is uniform, to obtain a third material; When the temperature of the third material is reduced to 45-50°C, the skin conditioner to be emulsified and the pH adjuster are added at low temperature, and the mixture is stirred in vacuum for 10-15 minutes until the material is evenly mixed to obtain an oil-controlling washable facial mask.

10. A method for preparing the oil-control washable facial mask according to any one of claims 1 to 7, characterized in that: The method comprises: Weigh the solvent, moisturizer, thickener, emulsifier, antioxidant, chelating agent, pH regulator, skin conditioner and salt mine mud according to weight proportion; the moisturizer includes a low-temperature moisturizer; the emulsifier includes a primary emulsifier and an auxiliary emulsifier; the skin conditioner includes an oil phase part and a part to be added at low temperature after emulsification; Add the solvent to the emulsifying kettle, continue to add the main emulsifier, thickener, chelating agent and salt mine slurry to the emulsifying kettle, stir and heat to 80-85°C, vacuum homogenize for 2-4 minutes, keep warm and stir for 30 minutes, until the material is completely dissolved, to obtain the first material; Mix the co-emulsifier and the oil phase part of the skin conditioner evenly, and heat to 75-80° C. to obtain a standby material; Add the reserved material into the emulsifying kettle containing the first material, start vacuum homogenization and stirring, and vacuum homogenize for 4-6 minutes until the material is uniform to obtain the second material; The second material in the emulsifying kettle is stirred and cooled to 70-75°C, an antioxidant is added, and stirred for 5-10 minutes until the material is uniform, to obtain a third material; When the third material is cooled to 45-50°C, a low-temperature moisturizer, a portion of the skin conditioner that needs to be emulsified and a pH adjuster are added, and the mixture is stirred in vacuum for 10-15 minutes until the material is evenly mixed to obtain an oil-controlling washable facial mask.

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