A collagen mask with skin repair, anti-aging and brightening effects and its preparation method.

Abstract

This invention relates to a collagen mask with skin repair, anti-aging, and brightening effects, and its preparation method, belonging to the field of cosmetic technology. The collagen mask disclosed in this invention comprises the following raw materials: deionized water, hyaluronic acid, collagen, natural polysaccharides, plant compound extracts, carnosine, caffeine emulsion, K-carrageenan, nanocellulose, and an ionic crosslinking agent. Hyaluronic acid has a moisturizing effect and can open skin channels, allowing caffeine to be absorbed by the skin and promoting blood circulation. Combined with plant compound extracts, carnosine, and natural polysaccharides, it achieves skin repair, anti-aging, and brightening effects. Furthermore, K-carrageenan and nanocellulose are added to the mask; after combining with metal ions, they form a double crosslinked network structure, improving the elasticity of the mask and making it less prone to breakage.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology and relates to a collagen mask with skin repair, anti-aging and brightening effects and its preparation method. Background Technology

[0002] The signs of skin aging that people are concerned about mainly manifest as dryness, roughness, fine lines, sagging, thickened epidermis, and dullness, which are influenced by both internal and external factors. Currently, there are many anti-aging skincare products on the market, but most focus on eliminating free radicals or stimulating collagen production, resulting in less noticeable effects or a tendency for rebound. Face masks, as one of the important cosmetics for facial skin care, have been the subject of numerous scientific research reports.

[0003] Chinese patent CN 115813816 A discloses a gentle gel mask and its application. Compared with traditional non-woven masks, this mask has better skin affinity and fit, and excellent water retention performance, which solves the shortcomings of traditional masks that cannot lock in essence. However, the gel mask has poor mechanical properties, resulting in insufficient elasticity, and it is easy to break due to the pulling effect during use. Summary of the Invention

[0004] This invention relates to a collagen mask with skin repair, anti-aging, and brightening effects, and its preparation method, belonging to the field of cosmetic technology. The collagen mask disclosed in this invention comprises the following raw materials: deionized water, hyaluronic acid, collagen, natural polysaccharides, carnosine, caffeine emulsion, k-carrageenan, nanocellulose, and an ionic crosslinking agent. Hyaluronic acid has a moisturizing effect and can open skin channels, allowing caffeine to be absorbed by the skin and promoting blood circulation. Combined with plant compound extracts, carnosine, and natural polysaccharides, it achieves skin repair, anti-aging, and brightening effects. Furthermore, k-carrageenan and nanocellulose are added to the mask; after combining with metal ions, they form a double crosslinked network structure, improving the elasticity of the mask and making it less prone to breakage.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A collagen mask with skin repair, anti-aging, and brightening effects comprises the following ingredients by weight: 100-120 parts deionized water, 10-15 parts collagen, 5-10 parts plant compound extract, 5-14 parts natural polysaccharides, 20-30 parts hyaluronic acid, 4-8 parts carnosine, 3-7 parts caffeine emulsion, 2-4 parts k-carrageenan, 2-4 parts nanocellulose, and 5-10 parts ion crosslinking agent. The plant compound extract consists of ginkgo leaf extract and hawthorn extract in a mass ratio of 1-2:1. The caffeine emulsion is prepared by the following steps:

[0007] A1: Mix carbomer powder with distilled water, heat, then add glycerin and caffeine, stir and keep warm to form an aqueous phase, set aside;

[0008] A2: Triglyceride (ethylhexanoate) and C12-20 alkyl glucoside are mixed and heated to form an oil phase, which is then set aside.

[0009] A3: Add the oil phase to the aqueous phase, homogenize and stir at high speed, stop stirring and cool down, then add triethanolamine to adjust the pH value, and cool to room temperature to obtain the caffeine emulsion.

[0010] Furthermore, the mass ratio of the carbomer powder, distilled water, glycerin and caffeine is 0.3-0.5:60-80:3-5:2-5, and the heating refers to heating to 75-80℃.

[0011] Further, in step A2, the mass ratio of glycerol tri(ethylhexanoate) ester to C12-20 alkyl glucoside is 5:1.5-2.5, and the heating refers to heating to 80-90℃.

[0012] Furthermore, in step A3, the volume ratio of the oil phase to the water phase is 1-2:1, the speed and time of the high-speed homogenizing stirring are 1500-2000 rpm and 20-30 min, respectively, the cooling refers to cooling to 40-45℃, and the pH value is 5.5-6.5.

[0013] Furthermore, the preparation method of the collagen mask with skin repair, anti-aging, and brightening effects includes the following steps:

[0014] (1) Mix deionized water, natural polysaccharides, collagen, plant compound extract, hyaluronic acid, carnosine, k-carrageenan and nanocellulose until dissolved, then add caffeine emulsion to obtain mixture a, for later use;

[0015] (2) Mix the ionic crosslinking agent with ethanol and stir to form mixture b, and set aside;

[0016] (3) First, spray the mixture b into the mask mold, then pour the mixture a into the mold, and then spray the mixture b onto the surface of the mixture a. After cooling and forming a film, take it out and package it to make a collagen mask.

[0017] Furthermore, in step (1), the natural polysaccharide is composed of sodium alginate and potassium alginate in a mass ratio of 1:1.

[0018] Further, in step (2), the mass ratio of the ionic crosslinking agent to ethanol is 1:1-2, wherein the mass fraction of ethanol is 75%, and the ionic crosslinking agent is composed of calcium gluconate and potassium chloride in a mass ratio of 1:1.

[0019] Furthermore, in step (3), the mass ratio of mixture b to mixture a is 0.2-0.5:2, and the cooling refers to cooling to 10-15℃.

[0020] The beneficial effects of this invention are:

[0021] 1. Hyaluronic acid opens up skin channels through hydration, and then emulsified caffeine is easily absorbed by the skin to promote blood circulation, thereby improving the skin's radiance and translucency. At the same time, it is combined with plant complex extracts, carnosine, and natural polysaccharides to repair, anti-age, and brighten the skin. In addition, k-carrageenan and nanocellulose are added to the mask. After combining with calcium and potassium ions, they form a double cross-linked network structure, which improves the elasticity of the mask and makes it less prone to breakage. Detailed Implementation

[0022] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with embodiments, is provided below.

[0023] The collagen involved in this invention refers to deep-sea fish skin collagen; Ginkgo biloba extract was purchased from Lanzhou Waterles Biotechnology Co., Ltd., with a particle size of 15-20 nm; Hawthorn extract was purchased from Shandong Fangchang Biotechnology Co., Ltd., with a particle size of 8-10 nm; Hyaluronic acid has a molecular weight of 500-2000 kDa; Carnosine was purchased from Guangdong Mingtong Biotechnology Co., Ltd., CAS number 305-84-0; K-carrageenan was purchased from Shandong Aicai Biotechnology Co., Ltd., CAS number 11114-20-8; Nanocellulose was purchased from Wuhan Huaxiang Kejie Biotechnology Co., Ltd., with a length and width of 0.5-1 μm-10-20 nm.

[0024] Example 1

[0025] A collagen mask with skin repair, anti-aging, and brightening effects comprises the following ingredients by weight: 100 parts deionized water, 10 parts collagen, 5 parts natural polysaccharides, 5 parts plant compound extract, 20 parts hyaluronic acid, 4 parts carnosine, 3 parts caffeine emulsion, 2 parts k-carrageenan, 2 parts nanocellulose, and 5 parts ion crosslinking agent. The plant compound extract is composed of ginkgo leaf extract and hawthorn extract in a 1:1 mass ratio. The caffeine emulsion is prepared using the following steps:

[0026] A1: Mix carbomer powder with distilled water, heat, then add glycerin and caffeine, stir and keep warm to form an aqueous phase, set aside;

[0027] A2: Triglyceride (ethylhexanoate) and C12-20 alkyl glucoside are mixed and heated to form an oil phase, which is then set aside.

[0028] A3: Add the oil phase to the aqueous phase, homogenize and stir at high speed, stop stirring and cool down, then add triethanolamine to adjust the pH value, and cool to room temperature to obtain the caffeine emulsion.

[0029] The mass ratio of the carbomer powder, distilled water, glycerin and caffeine is 0.3:60:3:2, and the heating refers to heating to 75°C.

[0030] In step A2, the mass ratio of glycerol tri(ethylhexanoate) ester to C12-20 alkyl glucoside is 5:1.5, and the heating refers to heating to 80°C.

[0031] In step A3, the volume ratio of the oil phase to the water phase is 1:1, the speed and time of the high-speed homogenizing stirring are 1500 rpm and 20 min, respectively, the cooling refers to cooling to 40°C, and the pH value is 5.5.

[0032] The preparation method of the collagen mask with skin repair, anti-aging and brightening effects includes the following steps:

[0033] (1) Mix deionized water, natural polysaccharides, collagen, plant compound extract, hyaluronic acid, carnosine, k-carrageenan and nanocellulose until dissolved, then add caffeine emulsion to obtain mixture a, for later use;

[0034] (2) Mix the ionic crosslinking agent with ethanol and stir to form mixture b, and set aside;

[0035] (3) First, spray the mixture b into the mask mold, then pour the mixture a into the mold, and then spray the mixture b onto the surface of the mixture a. After cooling and forming a film, take it out and package it to make a collagen mask.

[0036] In step (1), the natural polysaccharide is composed of sodium alginate and potassium alginate in a mass ratio of 1:1.

[0037] In step (2), the mass ratio of the ionic crosslinking agent to ethanol is 1:1, wherein the mass fraction of ethanol is 75%, and the ionic crosslinking agent is composed of calcium gluconate and potassium chloride in a mass ratio of 1:1.

[0038] In step (3), the mass ratio of mixture b to mixture a is 0.2:2, and the cooling refers to cooling down to 10°C.

[0039] Example 2

[0040] A collagen mask with skin repair, anti-aging, and brightening effects comprises the following ingredients by weight: 110 parts deionized water, 12 parts collagen, 10 parts natural polysaccharides, 8 parts plant compound extract, 25 parts hyaluronic acid, 6 parts carnosine, 5 parts caffeine emulsion, 3 parts k-carrageenan, 3 parts nanocellulose, and 8 parts ion crosslinking agent. The plant compound extract consists of ginkgo leaf extract and hawthorn extract in a mass ratio of 1.5:1. The caffeine emulsion is prepared by the following steps:

[0041] A1: Mix carbomer powder with distilled water, heat, then add glycerin and caffeine, stir and keep warm to form an aqueous phase, set aside;

[0042] A2: Triglyceride (ethylhexanoate) and C12-20 alkyl glucoside are mixed and heated to form an oil phase, which is then set aside.

[0043] A3: Add the oil phase to the aqueous phase, homogenize and stir at high speed, stop stirring and cool down, then add triethanolamine to adjust the pH value, and cool to room temperature to obtain the caffeine emulsion.

[0044] The mass ratio of the carbomer powder, distilled water, glycerin and caffeine is 0.4:70:4:3.5, and the heating refers to heating to 78°C.

[0045] In step A2, the mass ratio of glycerol tri(ethylhexanoate) ester to C12-20 alkyl glucoside is 5:2, and the heating refers to heating to 85°C.

[0046] In step A3, the volume ratio of the oil phase to the water phase is 1.5:1, the speed and time of the high-speed homogenizing stirring are 1750 rpm and 25 min, respectively, the cooling refers to cooling to 42℃, and the pH value is 6.

[0047] The preparation method of the collagen mask with skin repair, anti-aging and brightening effects includes the following steps:

[0048] (1) Mix deionized water, natural polysaccharides, collagen, plant compound extract, hyaluronic acid, carnosine, k-carrageenan and nanocellulose until dissolved, then add caffeine emulsion to obtain mixture a, for later use;

[0049] (2) Mix the ionic crosslinking agent with ethanol and stir to form mixture b, and set aside;

[0050] (3) First, spray the mixture b into the mask mold, then pour the mixture a into the mold, and then spray the mixture b onto the surface of the mixture a. After cooling and forming a film, take it out and package it to make a collagen mask.

[0051] In step (1), the natural polysaccharide is composed of sodium alginate and potassium alginate in a mass ratio of 1:1.

[0052] In step (2), the mass ratio of the ionic crosslinking agent to ethanol is 1:1.5, wherein the mass fraction of ethanol is 75%, and the ionic crosslinking agent is composed of calcium gluconate and potassium chloride in a mass ratio of 1:1.

[0053] In step (3), the mass ratio of mixture b to mixture a is 0.35:2, and the cooling refers to cooling down to 12°C.

[0054] Example 3

[0055] A collagen mask with skin repair, anti-aging, and brightening effects comprises the following ingredients by weight: 120 parts deionized water, 15 parts collagen, 14 parts natural polysaccharides, 10 parts plant compound extract, 30 parts hyaluronic acid, 8 parts carnosine, 7 parts caffeine emulsion, 4 parts k-carrageenan, 4 parts nanocellulose, and 10 parts ion crosslinking agent. The plant compound extract is composed of ginkgo leaf extract and hawthorn extract in a mass ratio of 2:1. The preparation method of the caffeine emulsion includes the following steps:

[0056] A1: Mix carbomer powder with distilled water, heat, then add glycerin and caffeine, stir and keep warm to form an aqueous phase, set aside;

[0057] A2: Triglyceride (ethylhexanoate) and C12-20 alkyl glucoside are mixed and heated to form an oil phase, which is then set aside.

[0058] A3: Add the oil phase to the aqueous phase, homogenize and stir at high speed, stop stirring and cool down, then add triethanolamine to adjust the pH value, and cool to room temperature to obtain the caffeine emulsion.

[0059] The mass ratio of the carbomer powder, distilled water, glycerin and caffeine is 0.5:80:5:5, and the heating refers to heating to 80°C.

[0060] In step A2, the mass ratio of glycerol tri(ethylhexanoate) ester to C12-20 alkyl glucoside is 5:2.5, and the heating refers to heating to 90°C.

[0061] In step A3, the volume ratio of the oil phase to the water phase is 2:1, the speed and time of the high-speed homogenizing stirring are 2000 rpm and 30 min, respectively, the cooling refers to cooling to 45°C, and the pH value is 6.5.

[0062] The preparation method of the collagen mask with skin repair, anti-aging and brightening effects includes the following steps:

[0063] (1) Mix deionized water, natural polysaccharides, collagen, plant compound extract, hyaluronic acid, carnosine, k-carrageenan and nanocellulose until dissolved, then add caffeine emulsion to obtain mixture a, for later use;

[0064] (2) Mix the ionic crosslinking agent with ethanol and stir to form mixture b, and set aside;

[0065] (3) First, spray the mixture b into the mask mold, then pour the mixture a into the mold, and then spray the mixture b onto the surface of the mixture a. After cooling and forming a film, take it out and package it to make a collagen mask.

[0066] In step (1), the natural polysaccharide is composed of sodium alginate and potassium alginate in a mass ratio of 1:1.

[0067] In step (2), the mass ratio of the ionic crosslinking agent to ethanol is 1:2, wherein the mass fraction of ethanol is 75%, and the ionic crosslinking agent is composed of calcium gluconate and potassium chloride in a mass ratio of 1:1.

[0068] In step (3), the mass ratio of mixture b to mixture a is 0.5:2, and the cooling refers to cooling down to 15°C.

[0069] Comparative Example 1

[0070] Based on Example 2, a collagen mask with skin repair, anti-aging, and brightening effects is provided. The collagen mask comprises the following raw materials in parts by weight: 110 parts deionized water, 12 parts collagen, 10 parts natural polysaccharides, 8 parts plant compound extract, 25 parts hyaluronic acid, 6 parts carnosine, 5 parts caffeine emulsion, 3 parts k-carrageenan, 3 parts nanocellulose, and 8 parts ion crosslinking agent. The plant compound extract consists of ginkgo leaf extract and hawthorn extract in a mass ratio of 1.5:1. The preparation method of the caffeine emulsion includes the following steps:

[0071] A1: Mix carbomer powder with distilled water, heat, then add glycerin and caffeine, stir and keep warm to form an aqueous phase, set aside;

[0072] A2: Caprylic / capric triglycerides are mixed with C12-20 alkyl glucosides and heated to form an oil phase, which is then set aside.

[0073] A3: Add the oil phase to the aqueous phase, homogenize and stir at high speed, stop stirring and cool down, then add triethanolamine to adjust the pH value, and cool to room temperature to obtain the caffeine emulsion.

[0074] The mass ratio of the carbomer powder, distilled water, glycerin and caffeine is 0.4:70:4:3.5, and the heating refers to heating to 78°C.

[0075] In step A2, the mass ratio of glycerol tri(ethylhexanoate) ester to C12-20 alkyl glucoside is 5:2, and the heating refers to heating to 85°C.

[0076] In step A3, the volume ratio of the oil phase to the water phase is 1.5:1, the speed and time of the high-speed homogenizing stirring are 1750 rpm and 25 min, respectively, the cooling refers to cooling to 42℃, and the pH value is 6.

[0077] The preparation method of the collagen mask with skin repair, anti-aging and brightening effects includes the following steps:

[0078] (1) Mix deionized water, natural polysaccharides, collagen, plant compound extract, hyaluronic acid, carnosine, k-carrageenan and nanocellulose until dissolved, then add caffeine emulsion to obtain mixture a, for later use;

[0079] (2) Mix the ionic crosslinking agent with ethanol and stir to form mixture b, and set aside;

[0080] (3) First, spray the mixture b into the mask mold, then pour the mixture a into the mold, and then spray the mixture b onto the surface of the mixture a. After cooling and forming a film, take it out and package it to make a collagen mask.

[0081] In step (1), the natural polysaccharide is composed of sodium alginate and potassium alginate in a mass ratio of 1:1.

[0082] In step (2), the mass ratio of the ionic crosslinking agent to ethanol is 1:1.5, wherein the mass fraction of ethanol is 75%, and the ionic crosslinking agent is composed of calcium gluconate and potassium chloride in a mass ratio of 1:1.

[0083] In step (3), the mass ratio of mixture b to mixture a is 0.35:2, and the cooling refers to cooling down to 12°C.

[0084] Comparative Example 2

[0085] Based on Example 2, a collagen mask with skin repair, anti-aging, and brightening effects is provided. The collagen mask comprises the following ingredients in parts by weight: 110 parts deionized water, 12 parts collagen, 10 parts natural polysaccharides, 8 parts plant compound extract, 25 parts hyaluronic acid, 6 parts carnosine, 5 parts caffeine emulsion, 3 parts k-carrageenan, 3 parts nanocellulose, and 8 parts ion crosslinking agent. The plant compound extract is ginkgo leaf extract. The preparation method of the caffeine emulsion includes the following steps:

[0086] A1: Mix carbomer powder with distilled water, heat, then add glycerin and caffeine, stir and keep warm to form an aqueous phase, set aside;

[0087] A2: Triglyceride (ethylhexanoate) and C12-20 alkyl glucoside are mixed and heated to form an oil phase, which is then set aside.

[0088] A3: Add the oil phase to the aqueous phase, homogenize and stir at high speed, stop stirring and cool down, then add triethanolamine to adjust the pH value, and cool to room temperature to obtain the caffeine emulsion.

[0089] The mass ratio of the carbomer powder, distilled water, glycerin and caffeine is 0.4:70:4:3.5, and the heating refers to heating to 78°C.

[0090] In step A2, the mass ratio of glycerol tri(ethylhexanoate) ester to C12-20 alkyl glucoside is 5:2, and the heating refers to heating to 85°C.

[0091] In step A3, the volume ratio of the oil phase to the water phase is 1.5:1, the speed and time of the high-speed homogenizing stirring are 1750 rpm and 25 min, respectively, the cooling refers to cooling to 42℃, and the pH value is 6.

[0092] The preparation method of the collagen mask with skin repair, anti-aging and brightening effects includes the following steps:

[0093] (1) Mix deionized water, natural polysaccharides, collagen, plant compound extract, hyaluronic acid, carnosine, k-carrageenan and nanocellulose until dissolved, then add caffeine emulsion to obtain mixture a, for later use;

[0094] (2) Mix the ionic crosslinking agent with ethanol and stir to form mixture b, and set aside;

[0095] (3) First, spray the mixture b into the mask mold, then pour the mixture a into the mold, and then spray the mixture b onto the surface of the mixture a. After cooling and forming a film, take it out and package it to make a collagen mask.

[0096] In step (1), the natural polysaccharide is composed of sodium alginate and potassium alginate in a mass ratio of 1:1.

[0097] In step (2), the mass ratio of the ionic crosslinking agent to ethanol is 1:1.5, wherein the mass fraction of ethanol is 75%, and the ionic crosslinking agent is composed of calcium gluconate and potassium chloride in a mass ratio of 1:1.

[0098] In step (3), the mass ratio of mixture b to mixture a is 0.35:2, and the cooling refers to cooling down to 12°C.

[0099] Comparative Example 3

[0100] Based on Example 2, a collagen mask with skin repair, anti-aging, and brightening effects is provided. The collagen mask comprises the following ingredients in parts by weight: 110 parts deionized water, 12 parts collagen, 10 parts natural polysaccharides, 8 parts plant compound extract, 25 parts hyaluronic acid, 6 parts carnosine, 5 parts caffeine emulsion, 3 parts k-carrageenan, 3 parts nanocellulose, and 8 parts ion crosslinking agent. The plant compound extract is hawthorn extract. The preparation method of the caffeine emulsion includes the following steps:

[0101] A1: Mix carbomer powder with distilled water, heat, then add glycerin and caffeine, stir and keep warm to form an aqueous phase, set aside;

[0102] A2: Triglyceride (ethylhexanoate) and C12-20 alkyl glucoside are mixed and heated to form an oil phase, which is then set aside.

[0103] A3: Add the oil phase to the aqueous phase, homogenize and stir at high speed, stop stirring and cool down, then add triethanolamine to adjust the pH value, and cool to room temperature to obtain the caffeine emulsion.

[0104] The mass ratio of the carbomer powder, distilled water, glycerin and caffeine is 0.4:70:4:3.5, and the heating refers to heating to 78°C.

[0105] In step A2, the mass ratio of glycerol tri(ethylhexanoate) ester to C12-20 alkyl glucoside is 5:2, and the heating refers to heating to 85°C.

[0106] In step A3, the volume ratio of the oil phase to the water phase is 1.5:1, the speed and time of the high-speed homogenizing stirring are 1750 rpm and 25 min, respectively, the cooling refers to cooling to 42℃, and the pH value is 6.

[0107] The preparation method of the collagen mask with skin repair, anti-aging and brightening effects includes the following steps:

[0108] (1) Mix deionized water, natural polysaccharides, collagen, plant compound extract, hyaluronic acid, carnosine, k-carrageenan and nanocellulose until dissolved, then add caffeine emulsion to obtain mixture a, for later use;

[0109] (2) Mix the ionic crosslinking agent with ethanol and stir to form mixture b, and set aside;

[0110] (3) First, spray the mixture b into the mask mold, then pour the mixture a into the mold, and then spray the mixture b onto the surface of the mixture a. After cooling and forming a film, take it out and package it to make a collagen mask.

[0111] In step (1), the natural polysaccharide is composed of sodium alginate and potassium alginate in a mass ratio of 1:1.

[0112] In step (2), the mass ratio of the ionic crosslinking agent to ethanol is 1:1.5, wherein the mass fraction of ethanol is 75%, and the ionic crosslinking agent is composed of calcium gluconate and potassium chloride in a mass ratio of 1:1.

[0113] In step (3), the mass ratio of mixture b to mixture a is 0.35:2, and the cooling refers to cooling down to 12°C.

[0114] Comparative Example 4

[0115] Based on Example 2, the plant compound extract in the raw materials was removed, while other conditions remained the same as in Example 2.

[0116] Comparative Example 5

[0117] Based on Example 2, the nanocellulose in the raw materials was removed, while other conditions remained the same as in Example 2.

[0118] Comparative Example 6

[0119] Based on Example 2, in the process of preparing a collagen mask with skin repair, anti-aging and brightening effects, after cooling and film formation in step (3), the temperature was adjusted to 30°C, and other conditions were the same as in Example 2.

[0120] Comparative Example 7

[0121] Based on Example 2, in the process of preparing a collagen mask with skin repair, anti-aging and brightening effects, after cooling and film formation in step (3), the temperature was adjusted to 5°C, and other conditions were the same as in Example 2.

[0122] Performance testing

[0123] Safety test: The face masks prepared in Examples 1-3 and Comparative Examples 1-7 were used as samples, with an area not exceeding 50 mm². 2 A suitable patch applicator with a depth of approximately 1 mm was used. Approximately 0.02 ml (g) of the test substance was added to the applicator using a closed patch test method. The applicator was applied to the flexor side of the subject's forearm. Each group of samples was tested on 30 subjects. After 24 hours, the test substance was removed. Skin reactions were observed at 0.5 h, 24 h, and 48 h after removal. The number of subjects was recorded according to the skin reaction grading standards in the "Cosmetic Safety Technical Regulations 2015". The results are shown in Table 1.

[0124] Table 1 Test Results

[0125]

[0126] The test results in Table 1 show that no allergic reactions occurred in the comparative and example samples.

[0127] Skin glossiness test: 100 healthy women (25-45 years old) were selected and divided into 10 groups of 10 each. The same sample was used in each group. Every evening after cleansing, the subjects applied the mask to their faces for 12 minutes, then removed and rinsed their faces with water. The test was conducted in a room at 20-22℃ and 40-60% relative humidity. Subjects were allowed 15 minutes to acclimatize to the same environment. The test lasted for eight weeks. A GL200 skin glossiness meter was used to measure skin glossiness. (Measured values)

[0128] The larger the value, the better the skin gloss. The skin gloss increase value ∆a = a1 (after 8 weeks of the test) - a2 (before the start of the test). The average gloss value before or after the test for each group is taken. The skin gloss increase value for each group is shown in Table 2.

[0129] Table 2 Test Results

[0130]

[0131] As can be seen from Table 2, the skin radiance increase values ​​of Examples 1-3 are much greater than those of Comparative Examples 1-5. In Comparative Example 1, caprylic / capric triglycerides were used instead of triglycerides (ethylhexanoate) as the oil phase. Since triglycerides (ethylhexanoate) form a more stable water-in-oil emulsion with caffeine, more caffeine can penetrate into the skin to promote blood circulation and brighten the skin tone. Comparative Examples 2-4 lacked ginkgo leaf extract or hawthorn extract and plant compound extracts. Both of these extracts can effectively regulate complexion by regulating vasodilation, vasoconstriction and blood circulation, and working together with caffeine to promote blood circulation. In Comparative Example 5, the removal of nanocellulose reduced the cross-linking degree of the collagen mask, resulting in the loss of active ingredients and a decrease in the skin brightening effect. In Comparative Examples 6-7, the control of the collagen mask's film-forming temperature affected the stability of the mask, causing the loss of active ingredients and reducing the skin brightening effect.

[0132] Mechanical properties: The collagen masks prepared in Examples 1-3 and Comparative Examples 5-7 were used as samples. The tensile strength and elongation at break of the samples were tested using a universal mechanical testing machine. Each sample was tested 10 times and the average value was taken. The test results are shown in Table 3.

[0133] Table 3 Test Results

[0134]

[0135] Analysis of Table 3 shows that the mechanical properties of Examples 1-3 are superior to those of Comparative Examples 5-7. In Comparative Example 5, the removal of nanocellulose reduced the cross-linking degree of the collagen mask, leading to a rapid decline in mechanical properties. In Comparative Examples 6-7, due to the influence of film-forming temperature, when the temperature was low, the cooling rate was too slow, resulting in a decrease in film-forming speed and causing a small amount of nanocellulose to settle and aggregate, making the mask unstable. When the temperature was high, the temperature dropped rapidly, accelerating the film-forming speed and causing a small amount of air bubbles to form within the mask, thus affecting its stability.

[0136] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A collagen mask that combines skin repair, anti-aging, and brightening effects, characterized in that, The collagen mask comprises the following ingredients in parts by weight: 100-120 parts deionized water, 10-15 parts collagen, 5-14 parts natural polysaccharides, 5-10 parts plant compound extract, 20-30 parts hyaluronic acid, 4-8 parts carnosine, 3-7 parts caffeine emulsion, 2-4 parts k-carrageenan, 2-4 parts nanocellulose, and 5-10 parts ion crosslinking agent. The plant compound extract is composed of ginkgo leaf extract and hawthorn extract in a mass ratio of 1-2:

1. The preparation method of the caffeine emulsion includes the following steps: A1: Mix carbomer powder with distilled water, heat, then add glycerin and caffeine, stir and keep warm to form an aqueous phase, set aside; A2: Glyceryl triethylhexanoate and C12-20 alkyl glucoside are mixed and heated to form an oil phase, which is then set aside. A3: Add the oil phase to the aqueous phase, stir at high speed to homogenize, stop stirring and cool down, then add triethanolamine to adjust the pH value, and cool to room temperature to obtain the caffeine emulsion; The ginkgo leaf extract was purchased from Lanzhou Waterles Biotechnology Co., Ltd., with a particle size of 15-20 nm; the hawthorn extract was purchased from Shandong Fangchang Biotechnology Co., Ltd., with a particle size of 8-10 nm. The preparation method of the collagen mask with skin repair, anti-aging and brightening effects includes the following steps: (1) Mix deionized water, natural polysaccharides, collagen, plant compound extract, hyaluronic acid, carnosine, k-carrageenan and nanocellulose until dissolved, then add caffeine emulsion to obtain mixture a, for later use; (2) Mix the ionic crosslinking agent with ethanol and stir to form mixture b, and set aside; (3) First spray the mixture b into the mask mold, then pour the mixture a into the mold, then spray the mixture b onto the surface of the mixture a, cool it down and wait for it to form a film, then take it out and package it to make a collagen mask. The ionic crosslinking agent in step (2) is composed of calcium gluconate and potassium chloride in a mass ratio of 1:1; The step (3) cooling refers to cooling down to 10-15℃.

2. The collagen mask with skin repair, anti-aging, and brightening effects according to claim 1, characterized in that, The mass ratio of carbomer powder, distilled water, glycerin and caffeine is 0.3-0.5:60-80:3-5:2-5, and the heating refers to heating to 75-80℃.

3. The collagen mask with skin repair, anti-aging, and brightening effects according to claim 1, characterized in that, In step A2, the mass ratio of triglyceride (ethylhexanoate) to C12-20 alkyl glucoside is 5:1.5-2.5, and the heating refers to heating to 80-90℃.

4. A collagen mask with skin repair, anti-aging, and brightening effects according to claim 1, characterized in that, In step A3, the volume ratio of the oil phase to the water phase is 1-2:1, the speed and time of the high-speed homogenizing stirring are 1500-2000 rpm and 20-30 min, respectively, the cooling refers to cooling to 40-45℃, and the pH value is 5.5-6.

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5. A collagen mask with skin repair, anti-aging, and brightening effects according to claim 1, characterized in that, In step (1), the natural polysaccharide is composed of sodium alginate and potassium alginate in a mass ratio of 1:

1.

6. A collagen mask with skin repair, anti-aging, and brightening effects according to claim 1, characterized in that, In step (2), the mass ratio of the ionic crosslinking agent to ethanol is 1:1-2, wherein the mass fraction of ethanol is 75%.

7. A collagen mask with skin repair, anti-aging, and brightening effects according to claim 1, characterized in that, In step (3), the mass ratio of mixture b to mixture a is 0.2-0.5:2.

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