An oil-purifying facial cleansing mud and its preparation method

Abstract

This invention provides an oil-purifying cleansing mud and its preparation method. The cleansing mud, by weight, comprises 1-5 parts of a viscosity modifier, 0.01-0.1 parts of a chelating agent, 10-20 parts of a moisturizer, 15-25 parts of a surfactant, 0.1-1 parts of a thickener, 0.1-5 parts of a cleanser, 0.1-2 parts of an antioxidant, 0.1-1 parts of a fragrance, and 50-75 parts of water. The surfactant is a combination of sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate, and cetearyl alcohol polyether-25. This oil-purifying cleansing mud, through the use of surfactants, cleansers, and moisturizers, gently cleanses pores, absorbs oil and dirt, and simultaneously soothes the skin, preventing dryness and tightness. The synergistic combination of these components achieves a balance between cleansing, oil removal, and gentleness, precisely regulating the skin's balance and thus enhancing the consumer experience.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology, specifically relating to an oil-purifying cleansing mud and its preparation method. Background Technology

[0002] With the fast pace of life, changes in dietary structure, and increased environmental pollutants, the proportion of people with oily skin is rising year by year. At the same time, people with normal and combination skin often experience problems such as excessive localized sebum secretion, clogged pores, and dull skin tone, making the demand for facial cleansers with deep oil removal and pore-cleansing effects increasingly urgent. Cleansing clay products, as a type of facial cleanser that combines cleansing and conditioning effects, can quickly remove excess oil from the skin's surface and pores through the adsorption of powder, making them one of the preferred facial cleanser categories for people with oily and combination skin.

[0003] CN110151666A discloses an ultrafine particle cleansing mud facial cleanser and its preparation method. The ultrafine particle cleansing mud facial cleanser comprises the following components in parts by weight: 5-10 parts eggshell powder, 8-15 parts kaolin, 1-8 parts plant extracts, 1-3 parts anionic surfactant, 3-8 parts stearic acid, 0.1-1 parts xanthan gum, 0.05-0.5 parts citric acid, 0.3-1 parts phenoxyethanol, and 30-50 parts deionized water; the plant extracts include deer hoof grass extract, lemon balm extract, and bitter melon extract. The facial cleanser is mildly acidic, produces rich and dense foam that is easy to rinse off. It contains ultra-fine mud made from eggshell powder and kaolin clay, which gently exfoliates and deeply cleanses pores. It also absorbs and removes dirt, sebum, and other impurities from the skin, providing a deep and gentle cleansing effect. In addition, it contains deer hoof grass extract, lemon balm extract, and bitter melon extract, which leave the skin feeling refreshed during cleansing and hydrated without feeling tight after use.

[0004] CN107648123A discloses a gentle, oil-free cleansing mud mask, comprising kaolin, glycerin, butylene glycol, bentonite, trehalose, titanium dioxide, glacial sea mud, thickener, preservative, colorant, plant extract, and fragrance. The invention also discloses a method for preparing this gentle, oil-free cleansing mud mask. This mud mask is free of emollients, thoroughly removes excess oil and dirt from pores, leaving skin refreshed and non-greasy; it is also free of emulsifiers, making it gentle and non-irritating, leaving skin soft, smooth, and exceptionally clear after washing.

[0005] However, current cleansing clay products on the market still have limitations. While they can achieve deep cleansing in the short term, long-term use can damage the skin barrier, leading to moisture loss, tightness, dryness, and even stimulating the sebaceous glands to produce compensatory oil. Therefore, developing a product that is deep-cleansing, gentle, non-irritating, has a stable formula, and can synergistically regulate the skin's oil-water balance has become a pressing technical challenge in the current facial cleansing product industry. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an oil-purifying facial cleansing mud and its preparation method.

[0007] To achieve this objective, the present invention adopts the following technical solution: In a first aspect, the present invention provides an oil-purifying facial cleansing mud, which, by weight, comprises 1-5 parts of viscosity modifier, 0.01-0.1 parts of chelating agent, 10-20 parts of moisturizer, 15-25 parts of surfactant, 0.1-1 parts of thickener, 0.1-5 parts of detergent, 0.1-2 parts of antioxidant, 0.1-1 parts of fragrance and 50-75 parts of water; The surfactant is a combination of sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate, and cetearyl alcohol polyether-25.

[0008] The cleansing mud of this invention uses surfactants, cleansers, moisturizers and other components to gently cleanse pores and absorb oil and dirt, while also soothing the skin and preventing dryness and tightness. The synergistic combination of the components can achieve a balance between cleansing, oil removal and gentleness, and precisely regulate the skin's balance, thereby improving the consumer's experience.

[0009] In particular, the surfactants are a combination of sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate, and cetearyl alcohol polyether-25. The combination of sodium cocoyl glycinate, potassium cocoyl glycinate, and cocoyl glutamic acid allows for synergistic cleaning power while reducing the concentration of individual surfactants. Lauryl hydroxysulfonate betaine avoids the irritation caused by pH fluctuations in the three amino acid surfactants, and its emulsifying synergy enhances the cleaning efficiency of the amino acid surfactants. The nonionic nature of decyl glucoside makes it compatible with all ionic surfactants, and its deep emulsification ability compensates for the insufficient cleaning of stubborn sebum in pores by amino acid surfactants, directly increasing the upper limit of cleaning power. Meanwhile, cetearyl alcohol polyether-25... 25 can improve the dispersibility of all surfactants, allowing the cleansing ingredients to act evenly on the skin and avoid spot irritation caused by excessive local surfactant concentration. At the same time, it can improve the utilization rate of effective ingredients and indirectly improve the cleansing power. When used together, the six can maximize the cleansing power of the cleansing and oil-removing system without increasing irritation.

[0010] The amount of viscosity modifier added in the cleansing mud of the present invention can be 0.15 parts, 0.2 parts, 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, or 0.45 parts, etc.; The amount of the chelating agent added can be 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts, 0.06 parts, 0.07 parts, 0.08 parts, or 0.09 parts, etc.; The amount of the humectant added can be 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, or 19 parts, etc. The amount of surfactant added can be 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, or 24 parts, etc. The amount of the thickener added can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, or 0.9 parts, etc.; The amount of the cleaning agent added can be 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, or 4.5 parts, etc.; The amount of antioxidant added can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, or 1.9 parts, etc.; The amount of the fragrance added can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, or 0.9 parts, etc.; The amount of water added can be 52 parts, 55 parts, 58 parts, 60 parts, 62 parts, 65 parts, 68 parts, 70 parts, 72 parts, or 74 parts, etc.

[0011] Preferably, the mass ratio of sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate and cetearyl alcohol polyether-25 is (10-15): (1-2): (2-4): (0.5-1.5): (0.5-2): (0.1-1).

[0012] "10-15" can be 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, or 14.5, etc. "2-4" can be 2.1, 2.3, 2.5, 2.8, 3, 3.2, 3.5, 3.7, or 3.9, etc.; "0.5-1.5" can be 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3 or 1.4, etc.; "0.5-2" can be 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, or 1.9, etc. "0.1-1" can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, etc.

[0013] Preferably, the humectant comprises any one or a combination of at least two of glycerin, 1,2-hexanediol, panthenol, or ergothioneine.

[0014] Preferably, the thickener comprises modified corn starch and / or acrylic (ester) copolymer.

[0015] Preferably, the viscosity modifier comprises sodium chloride.

[0016] Preferably, the antioxidant includes p-hydroxyacetophenone.

[0017] Preferably, the chelating agent comprises disodium EDTA.

[0018] Preferably, the fragrance agent includes a flavoring. Preferably, the cleaning agent comprises any one or a combination of at least two of kaolin, Manegugen glacial mud, or fermented activated mineral mud.

[0019] Preferably, the cleaning agent is a combination of kaolin, Manegugen glacial mud, and fermented activated mineral mud.

[0020] The fermented activated mineral mud mentioned above is MeTrix-FT Clay, a fermented activated mineral mud from Zhejiang Meicuishi Biotechnology Co., Ltd. Its components include yeast / Acetobacter xylinum / black tea fermentation products, Norway spruce (PICEA EXCELSA) leaf extract, humus extract, rose (ROSA RUGOSA) flower extract, kaolin, marine silt, dipropylene glycol, butylene glycol, 1,2-hexanediol, bentonite, p-hydroxyacetophenone, and xanthan gum.

[0021] As a preferred technical solution of the present invention, the kaolin, Manegugen glacial mud and fermented activated mineral mud are used in combination, which has a synergistic effect. The three can remove oil and dirt through physical adsorption. Due to the differences in mineralization characteristics, particle size structure and component modification, the three complement each other in terms of adsorption capacity, oil control targeting, skin compatibility and added skin care value. They can also work synergistically with the surfactant system in the product to achieve a dual oil control and cleaning effect of "powder physical adsorption and surfactant chemical cleaning".

[0022] Preferably, the components of the cleansing mud also include acne-removing agents and / or pH adjusters.

[0023] Preferably, the components of the cleansing mud, by weight, further include 0.01-1 parts of acne-removing agent (e.g., 0.03 parts, 0.05 parts, 0.08 parts, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, or 0.9 parts, etc.) and 0.01-1 parts of pH adjuster (e.g., 0.03 parts, 0.05 parts, 0.08 parts, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, or 0.9 parts, etc.).

[0024] Preferably, the acne treatment agent comprises colloidal sulfur.

[0025] Preferably, the pH adjuster includes citric acid and / or sodium citrate.

[0026] Preferably, the components of the cleansing mud also include skin conditioning agents.

[0027] Preferably, the components of the cleansing mud also include 0.1-3 parts of skin conditioning agent by weight, for example, 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, or 2.8 parts, etc.

[0028] Preferably, the skin conditioning agent comprises any one or a combination of at least two of the following: Sapindus mukorossi extract, dipotassium glycyrrhizate, collagen, lactobionic acid, Centella asiatica extract, or anti-wrinkle complex peptides.

[0029] Preferably, the skin conditioning agent is a combination of Sapindus mukorossi extract, collagen, Centella asiatica extract, and anti-wrinkle complex peptides.

[0030] The skin conditioning agent of this invention works synergistically with core cleansing and oil-controlling ingredients such as surfactants and mineral mud to solve the problems of traditional cleansing and oil-removing products, which have strong cleansing power but poor skin feel, are prone to drying out the skin due to oil control, and damage the skin barrier with long-term cleansing. It can form a thin protective film on the skin surface after rinsing, reducing dryness and tightness caused by moisture loss from the stratum corneum after cleansing, and improving the smoothness of the skin after using the product.

[0031] Preferably, the collagen includes any one or at least two of recombinant human type III collagen, recombinant human type IV collagen, or recombinant human type XVII collagen.

[0032] Preferably, the anti-wrinkle complex peptide is the 4D anti-wrinkle complex peptide from Shenzhen Jianyuan Pharmaceutical Technology Co., Ltd., whose components are water, glycerin, ethylhexylglycerin, dipeptide diaminobutyryl benzylamide diacetate, and... 1,2-Hexanediol, acetyl hexapeptide-8, hexapeptide-9, and arginine / lysine peptides.

[0033] All the specific point values ​​within the above range can be selected, and will not be elaborated on here.

[0034] Secondly, the present invention provides a method for preparing the oil-purifying facial cleansing mud as described in the first aspect, the method comprising: (1) Heat the water, then add humectant, viscosity modifier, thickener and antioxidant, and homogenize to obtain an aqueous phase liquid; The chelating agent and surfactant were heated and homogenized to obtain an oil phase liquid; (2) Mix the aqueous phase liquid and the oil phase liquid together, cool down, add the detergent and fragrance, stir evenly to obtain the cleansing mud.

[0035] Preferably, in step (1), the aqueous phase liquid is prepared at a temperature of 85-95°C (e.g., 86°C, 88°C, 90°C, 92°C, or 94°C), and the homogenization is carried out by stirring at a speed of 10-50 rpm (e.g., 15 rpm, 20 rpm, 25 rpm, 30 rpm, 35 rpm, 40 rpm, or 45 rpm) for a time of 5-30 min (e.g., 10 min, 15 min, 20 min, or 25 min).

[0036] Preferably, in step (1), the oil phase liquid is heated to 85-95℃ (e.g., 86℃, 88℃, 90℃, 92℃ or 94℃, etc.), and the homogenization is carried out by stirring. The stirring speed is 10-50 rpm (e.g., 15 rpm, 20 rpm, 25 rpm, 30 rpm, 35 rpm, 40 rpm or 45 rpm, etc.), and the time is 5-30 min (e.g., 10 min, 15 min, 20 min or 25 min, etc.).

[0037] Preferably, the temperature reduction to 35-50℃ in step (2) can be, for example, 36℃, 38℃, 40℃, 42℃, 44℃, 46℃ or 48℃.

[0038] Preferably, step (2) after cooling further includes adding any one or a combination of at least two of the following: a skin conditioning agent, an acne treatment agent, or a pH adjuster.

[0039] All the specific point values ​​within the above range can be selected, and will not be elaborated on here.

[0040] Compared with the prior art, the present invention has the following beneficial effects: The cleansing mud of this invention uses surfactants, cleansers, moisturizers and other components to gently cleanse pores and absorb oil and dirt, while also soothing the skin and preventing dryness and tightness. The synergistic combination of the components can achieve a balance between cleansing, oil removal and gentleness, and precisely regulate the skin's balance, thereby improving the consumer's experience. Detailed Implementation

[0041] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention.

[0042] The weight parts mentioned in the following examples and comparative examples are based on the actual active ingredients contained in commercially available raw materials. These commercially available raw materials may also selectively contain any one or a combination of at least two of the following: solvents, fillers, diluents, stabilizers, pH adjusters, antibacterial agents, antioxidants, or impurities within permissible limits.

[0043] The sources of some of the raw materials used in the embodiments or comparative examples of this invention are shown in the table below: All other raw materials can be used as long as they are purchased from authorized distributors.

[0044] Examples 1-3 The embodiments provide three types of oil-purifying facial mud, the components of which are shown in the table below. The preparation method of the oil-purifying cleansing mud in Example 1 is as follows: (1) Heat the water to 90°C, then add humectant, viscosity modifier, thickener and antioxidant, and homogenize at 40 rpm for 20 min to obtain an aqueous phase liquid; (2) The chelating agent and surfactant were heated to 90°C and homogenized at 30 rpm for 30 min to obtain an oil phase liquid; (3) Mix the aqueous phase and oil phase homogenize, cool to 40°C, add skin conditioning agent, acne removal agent, cleanser, fragrance and pH adjuster, stir evenly to obtain the cleansing mud.

[0045] The preparation methods for the products of Examples 2 and 3 are the same as those described above.

[0046] Example 4 This embodiment provides an oil-purifying cleansing mud. The only difference between the oil-purifying cleansing mud and that of Embodiment 1 is that the skin conditioning agent is not present in the composition. The reduction is made up by water. The remaining components and dosages are the same as those of Embodiment 1. The preparation method is the same as that of Embodiment 1.

[0047] Example 5 This embodiment provides an oil-purifying cleansing mud. The only difference between the oil-purifying cleansing mud and that of Example 1 is that the soapberry extract is not included in the composition. The reduced amount is made up by recombinant human type III collagen, centella asiatica extract and anti-wrinkle complex peptide in proportion. The remaining components and dosages are the same as in Example 1, and the preparation method is the same as in Example 1.

[0048] Example 6 This embodiment provides an oil-purifying cleansing mud. The only difference between the oil-purifying cleansing mud and that of Example 1 is that the recombinant human type III collagen is not present in the composition. The reduction is made up by Sapindus mukorossi extract, Centella asiatica extract and anti-wrinkle complex peptide in proportion. The remaining components and dosages are the same as in Example 1, and the preparation method is the same as in Example 1.

[0049] Example 7 This embodiment provides an oil-purifying cleansing mud. The only difference between the oil-purifying cleansing mud and that of Example 1 is that it does not contain Centella asiatica extract. The reduction is made up by Sapindus mukorossi extract, recombinant human type III collagen and anti-wrinkle complex peptide in proportion. The remaining components and dosages are the same as in Example 1. The preparation method is the same as in Example 1.

[0050] Example 8 This embodiment provides an oil-purifying cleansing mud. The only difference between the oil-purifying cleansing mud and that of Example 1 is that the anti-wrinkle complex peptide is not present in the composition. The reduction is made up by Sapindus mukorossi extract, recombinant human type III collagen and Centella asiatica extract in proportion to the number of parts. The remaining components and dosages are the same as in Example 1. The preparation method is the same as in Example 1.

[0051] Example 9 This embodiment provides an oil-purifying facial cleansing mud. The only difference between this oil-purifying facial cleansing mud and that of Embodiment 1 is that it does not contain kaolin. The reduction in kaolin is made up by Manegugen glacial mud and fermented activated mineral mud in a fractional ratio. The remaining components and amounts are the same as in Embodiment 1, and the preparation method is the same as in Embodiment 1.

[0052] Example 10 This embodiment provides an oil-purifying facial cleansing mud. The only difference between this oil-purifying facial cleansing mud and that of Embodiment 1 is that it does not contain Manicugen glacial mud. The reduction in its content is made up by kaolin and fermented activated mineral mud in a fractional ratio. The remaining components and amounts are the same as those in Embodiment 1, and the preparation method is the same as that in Embodiment 1.

[0053] Example 11 This embodiment provides an oil-purifying facial cleansing mud. The only difference between this oil-purifying facial cleansing mud and that of Embodiment 1 is that it does not contain fermented activated mineral mud. The reduction in its content is made up by kaolin and Manegug glacial mud in a fractional ratio. The remaining components and amounts are the same as in Embodiment 1, and the preparation method is the same as in Embodiment 1.

[0054] Comparative Example 1 This comparative example provides an oil-purifying facial cleansing mud. The only difference between this cleansing mud and Example 1 is that it does not include sodium cocoyl glycinate in its components. The reduction in sodium cocoyl glycinate is made up by lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate, and cetearyl alcohol polyether-25 in proportion to the number of parts. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.

[0055] Comparative Example 2 This comparative example provides an oil-purifying facial cleansing mud. The only difference between the oil-purifying facial cleansing mud and Example 1 is that it does not include lauryl hydroxysulfonate betaine in its components. The reduced amount is made up by sodium cocoyl glycinate, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate, and cetearyl alcohol polyether-25 in proportion to the parts. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.

[0056] Comparative Example 3 This comparative example provides an oil-purifying cleansing mud, which differs from Example 1 only in that it does not contain cocoyl glutamic acid. The reduction in its amount is made up by sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, decyl glucoside, potassium cocoyl glycinate, and cetearyl alcohol polyether-25 in proportion to the number of parts. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.

[0057] Comparative Example 4 This comparative example provides an oil-purifying facial cleansing mud. The only difference between the oil-purifying facial cleansing mud and Example 1 is that it does not include decyl glucoside in its components. The reduction in its amount is made up by sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, potassium cocoyl glycinate, and cetearyl alcohol polyether-25 in proportion to the parts. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.

[0058] Comparative Example 5 This comparative example provides an oil-purifying cleansing mud, which differs from Example 1 only in that it does not include potassium cocoyl glycinate in its components. The reduction is made up by sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, and cetearyl alcohol polyether-25 in proportion to the number of parts. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.

[0059] Comparative Example 6 This comparative example provides an oil-purifying cleansing mud, which differs from Example 1 only in that it does not include cetearyl alcohol polyether-25 in its components. The reduction in cetearyl alcohol polyether-25 is made up by sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside and potassium cocoyl glycinate in proportion to the amount of cetearyl glycinate. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.

[0060] Test Example 1: Oil Control Effect Test Test subjects: Samples provided in Examples 1-11 and Comparative Examples 1-6.

[0061] Test Method: 119 volunteers, aged 18-50, were randomly divided into 17 groups of 7. Each volunteer applied an appropriate amount of sample evenly to their entire face after cleansing in the morning and evening, left it on for 15 minutes, and then washed it off with water. This was continued for 28 days. Before, after 14 days of product use, and after 28 days of product use, volunteers underwent oil-control efficacy tests to obtain skin oil content. The oil-control efficacy test used a cuotometer MPA580 sebum testing probe (Sebumeter) manufactured by Courage+Khazaka (CK GmbH, Germany) to test the forehead area 5 times, and the average value was taken.

[0062] Calculate the rate of change after 14 and 28 days of product use using the following formula: In the formula, D0 represents the baseline skin parameters of the test area before product use; D14 represents the skin parameter values ​​of the test area after 14 days of product use; and D28 represents the skin parameter values ​​of the test area after 28 days of product use.

[0063] The test results are shown in Table 1: Table 1 Test Example 2 Antioxidant Test Test subjects: Samples provided in Examples 1-11 and Comparative Examples 1-6 were used to evaluate the antioxidant effect of DPPH.

[0064] Test method: Take 1 g of product, add 2 mL of anhydrous ethanol, dissolve completely, then add 2 mL of 60 μmol / L DPPH solution and mix well. Let stand for 30 min, zero the instrument with anhydrous ethanol, and measure the absorbance at 517 nm as Ai; In the same way, take 2 mL of anhydrous ethanol solvent + 2 mL of DPPH solution, mix well and measure the absorbance as Ac; Take another 1 g of product, dissolve it, add 2 mL of anhydrous ethanol, then add another 2 mL of anhydrous ethanol solvent, mix well and measure the absorbance as Aj.

[0065] Calculate its free radical scavenging rate using the following formula.

[0066] Clearance rate (%) = [1 - (Ai - Aj) / Ac] × 100% Where Aj represents the contribution of the sample itself to the absorbance; Ai represents the absorbance of the sample after the DPPH treatment; and Ac represents the absorption of DPPH itself at the measurement wavelength.

[0067] The higher the DPPH scavenging rate, the stronger the antioxidant capacity of the composition to scavenge free radicals. The results are shown in Table 2 (each sample was measured in parallel 5 times, and the data are presented as average values).

[0068] The results are shown in Table 2: Table 2 Test Example 3: Consumer Sensory Effect Evaluation After completing Test Example 1, volunteers evaluated the product using a 5-point scale: 4.5 points and above indicated excellent (very satisfied); 4-4.5 points indicated good; 3-4 points indicated moderately acceptable; and below 3 points indicated poor (unacceptable). Each group's score was the average of 10 participants, and the results are shown in Table 3.

[0069] Table 3 As shown in Tables 1-3, the products of Examples 1-3 of the present invention have excellent oil control effect after use due to the synergistic effect of each component. Long-term use can regulate the water-oil balance of the skin. They also have very good removal ability. After use, the skin is not dry or tight, and has a good sense of comfort and moisturizing effect.

[0070] As can be seen from Examples 4-8, the addition of skin conditioning agents to the product, in combination with surfactants and cleansers, can improve the comfort after product use, and the choice of skin conditioning agents has an impact on the efficacy of the product. As can be seen from Examples 9-11, the choice of cleaning agent has an impact on the degreasing effect, and the combination of kaolin, Manegug glacial mud and fermented activated mineral mud has a synergistic effect.

[0071] As can be seen from Comparative Examples 1-6, the choice of surfactant has a significant impact on the oil control, moisturizing and antioxidant effects of the product.

[0072] Test Example 4: Safety Evaluation Experiment Safety assessment: The specific method was as follows: Forty volunteers aged 20-35 years (half male and half female) with no history of allergies were selected. Each subject used the samples prepared in Examples 1-3. After cleaning the subject's arm, the patch applicator containing the sample was applied to the selected location on the arm using non-irritating adhesive tape. After application, the patch was gently pressed with the fingers to ensure even application to the skin, and left for 24 hours. During these 24 hours, the subject kept the patch area dry and avoided strenuous exercise, scratching, and prolonged sun exposure. After 24 hours, the applicator was removed and marked. After 30 minutes, once the pressure marks disappeared, the applicator was evaluated under sufficient light.

[0073] The grading criteria for adverse skin reactions are shown in Table 4: Table 4 The results are shown in Table 5: Table 5 As shown in Table 5, all subjects had negative reactions, indicating that the product prepared according to the present invention has no adverse reactions on the human body and is highly safe.

[0074] The applicant declares that this invention illustrates an oil-purifying facial cleansing mud and its preparation method through the above embodiments, but this invention is not limited to the above embodiments, that is, it does not mean that this invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of the raw materials of this invention, addition of auxiliary components, and selection of specific methods, etc., all fall within the protection scope and disclosure scope of this invention.

[0075] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0076] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. An oil-purifying facial cleansing mud, characterized in that, The cleansing mud, by weight, comprises 1-5 parts viscosity modifier, 0.01-0.1 parts chelating agent, 10-20 parts moisturizer, 15-25 parts surfactant, 0.1-1 parts thickener, 0.1-5 parts detergent, 0.1-2 parts antioxidant, 0.1-1 parts fragrance and 50-75 parts water; The surfactant is a combination of sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate, and cetearyl alcohol polyether-25.

2. The cleansing mud as described in claim 1, characterized in that, The mass ratio of sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate and cetearyl alcohol polyether-25 is (10-15): (1-2): (2-4): (0.5-1.5): (0.5-2): (0.1-1).

3. The cleansing mud as described in claim 1 or 2, characterized in that, The humectant includes any one or a combination of at least two of glycerin, 1,2-hexanediol, panthenol, or ergothioneine. Preferably, the thickener comprises modified corn starch and / or acrylic (ester) copolymers; Preferably, the viscosity modifier comprises sodium chloride.

4. The cleansing mud as described in any one of claims 1-3, characterized in that, The antioxidant includes p-hydroxyacetophenone; Preferably, the chelating agent comprises disodium EDTA; Preferably, the fragrance agent includes a flavoring. Preferably, the cleaning agent comprises any one or a combination of at least two of kaolin, Manegugen glacial mud, or fermented activated mineral mud.

5. The cleansing mud as described in claim 4, characterized in that, The cleaning agent is a combination of kaolin, Manegugen glacial mud, and fermented activated mineral mud.

6. The cleansing mud as described in any one of claims 1-5, characterized in that, The components of the cleansing mud also include acne-removing agents and / or pH adjusters; Preferably, the components of the cleansing mud further include 0.01-1 parts of acne-removing agent and 0.01-1 parts of pH adjuster by weight; Preferably, the acne treatment agent comprises colloidal sulfur; Preferably, the pH adjuster includes citric acid and / or sodium citrate.

7. The cleansing mud as described in claim 6, characterized in that, The ingredients of the cleansing mud also include skin conditioning agents; Preferably, the composition of the cleansing mud also includes 0.1-3 parts by weight of a skin conditioning agent.

8. The cleansing mud as described in claim 7, characterized in that, The skin conditioning agent includes any one or a combination of at least two of the following: Sapindus mukorossi extract, dipotassium glycyrrhizate, collagen, lactobionic acid, Centella asiatica extract, or anti-wrinkle complex peptides. Preferably, the skin conditioning agent is a combination of Sapindus mukorossi extract, collagen, Centella asiatica extract, and anti-wrinkle complex peptides.

9. A method for preparing an oil-purifying facial cleansing mud as described in any one of claims 1-8, characterized in that, The preparation method includes: (1) Heat the water, then add humectant, viscosity modifier, thickener and antioxidant, and homogenize to obtain an aqueous phase liquid; The chelating agent and surfactant were heated and homogenized to obtain an oil phase liquid; (2) Mix the aqueous phase liquid and the oil phase liquid together, cool down, add the detergent and fragrance, stir evenly to obtain the cleansing mud.

10. The preparation method according to claim 9, characterized in that, In step (1), the aqueous phase liquid is prepared by heating to 85-95℃, and the homogenization is carried out by stirring. The stirring speed is 10-50 rpm and the time is 5-30 min. Preferably, in step (1), the oil phase liquid is heated to 85-95°C, and the homogenization is carried out by stirring, with a stirring speed of 10-50 rpm and a time of 5-30 min; Preferably, the temperature is reduced to 35-50°C in step (2); Preferably, step (2) after cooling further includes adding any one or a combination of at least two of the following: a skin conditioning agent, an acne treatment agent, or a pH adjuster.

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