A cleansing gel mask

Abstract

The present invention relates to the field of cosmetic technology, in particular to the field of IPC A61K8, and further to a cleansing gel mask. In parts by mass, the raw materials include: 0.5-6 parts of alginate, 0.3-3 parts of ionic crosslinking agent, 1-5 parts of surfactant, 0.5-50 parts of adsorbent and 150-250 parts of deionized water. The present invention uses hydrogel as a mask matrix. Since the hydrogel has the function of keeping the skin moist, long-term application will not cause dry skin, can absorb acne pus and blackheads, effectively repair acne and pimples, and make the skin smoother; the dual effects of hydrogel and adsorbent make the cleansing gel mask have a good cleaning effect while presenting good water retention performance, so that the skin will not feel tight.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, in particular to the field of IPC A61K8, and further to a cleansing gel mask. Background Art

[0002] Cleansing mask is a novel cosmetic for cleaning, health care and beauty. It is mainly used to achieve deep cleansing of the skin, especially the epidermis, because this mask has an adsorption effect and is used to remove excess oil in the stratum corneum and dirt remaining on the skin surface. In addition to removing dirt on the skin surface, the cleansing mask can also unclog pores, clean pores, and remove acne and blackheads. Regular use of cleansing masks can remove garbage from the environment and makeup residues in the skin. After applying the cleansing mask, a thin film can be quickly formed to form a protective skin barrier, thereby isolating the skin from the outside air, softening the stratum corneum, inhibiting water evaporation, and dilating pores. The blood circulation is improved, and the skin can be enhanced to absorb various additives in the mask, thereby achieving the effect of enhancing the physiological function of the skin. When the mask is removed, the impurities and dirt on the skin are also discarded, which can not only clean the skin, but also make the skin white, tender and comfortable. In addition, a suitable cleansing mask keeps the epidermis in a highly hydrated state, which can effectively improve the skin tone and fine lines of the facial skin.

[0003] Currently, the main types of cleansing masks on the market include mud type, peel-off type, etc. These masks usually make the skin drier because they remove the oils on the skin surface. If they are applied for too long, the mask will become drier and will pull the skin when removed, causing the skin to feel tighter, which may eventually lead to adverse reactions such as skin redness and swelling. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a cleansing gel mask, whose raw materials include, by weight: 0.5-6 parts of alginate, 0.3-3 parts of ionic crosslinking agent, 1-5 parts of surfactant, 0.5-50 parts of adsorbent and 150-250 parts of deionized water.

[0005] Alginate is a natural high-molecular polysaccharide with no adverse effects on the skin. It acts on the surface of the facial skin to form a nourishing film on the face, which can effectively improve dry skin, promote skin metabolism, penetrate skin cells, and make the skin more delicate and smooth.

[0006] In some preferred embodiments, the alginate and the ionic crosslinker are both food grade.

[0007] In some preferred embodiments, the cleansing gel mask is prepared by the following method:

[0008] (1) preparing solution A: uniformly mixing alginate, adsorbent, all or part of surfactant and deionized water to obtain solution A;

[0009] (2) preparing solution B: uniformly mixing the ionic crosslinking agent, the remaining surfactant and deionized water to obtain solution B;

[0010] (3) Solution A is evenly applied to the skin surface, and then solution B is sprayed onto the surface of solution A. After film formation, a cleansing gel mask is obtained.

[0011] If the surfactant is non-irritating or has very low irritation, adding all of it to the alginate aqueous solution will not have too many adverse effects on the skin. However, since some surfactants are irritating to the skin, adding part of the surfactant to the alginate aqueous solution and part of it to the ion crosslinker aqueous solution can effectively reduce the degree of irritation to the skin and reduce the occurrence of adverse reactions.

[0012] In some preferred embodiments, 30-90% of the surfactant is added to solution A, preferably 70-90% of the surfactant is added to solution A.

[0013] In order to improve the cleansing effect of the cleansing gel mask, in some preferred embodiments, 30-90% of the surfactant is added to solution A, preferably 70-90% of the surfactant is added to solution A. Adding part of the surfactant to solution A can greatly reduce the irritation that the surfactant may cause, but since the surfactant needs to gradually penetrate from the surface layer to the inside, when the amount of surfactant added to solution A is small, the amount of surfactant that penetrates into the skin surface in a short time is small, and it cannot play a good cleansing role, resulting in poor cleaning effect; but when the amount of surfactant added to solution A is too much, the concentration directly contacted by the skin is high, and the release speed is fast, which is prone to adverse reactions.

[0014] The applicant has found through a large number of experiments that adding a relatively large amount of surfactant to the solution A that directly contacts the skin helps improve the cleaning effect. This separate addition method reduces the irritation caused by the high concentration of surfactant when the skin contacts the mask; on the other hand, it achieves a good sustained release effect, further increases the action time of the surfactant, and maintains a relatively stable action between the surfactant and the skin, thereby improving the cleaning effect.

[0015] In some preferred embodiments, the alginate is one or a combination of sodium alginate, potassium alginate, lithium alginate, and calcium alginate.

[0016] In some preferred embodiments, alginate is added into deionized water to prepare an alginate aqueous solution.

[0017] In some preferred embodiments, the mass ratio of alginate to deionized water in the solution A is (1-6):100.

[0018] In order to reduce the gelation time of the cleansing gel mask and avoid slippage during application, in some preferred embodiments, the mass ratio of alginate to deionized water is (1-6):100. If the concentration of alginate in the alginate aqueous solution is low, the viscosity of the alginate aqueous solution is low and the gelation speed is slow; but if the concentration of alginate is too high, the viscosity of the alginate aqueous solution will be too high, which is not conducive to the penetration of the ionic crosslinking agent and prolongs the gelation time. In addition, when the mass ratio of alginate to deionized water in solution A is (1-6):100, a suitable release rate and release amount of the surfactant can also be obtained. The applicant speculates that when the concentration of alginate in the alginate aqueous solution is high, the viscosity of the alginate aqueous solution is high, which is not conducive to the penetration of the ionic crosslinking agent. A dense gel structure will be formed on the surface, but the interior is loose, resulting in the "explosive release" of the surfactant in a short time, which is not conducive to reducing irritation.

[0019] In some preferred embodiments, the alginate aqueous solution is a sodium alginate aqueous solution; sodium alginate contains a large amount of -COO-, can exhibit polyanionic behavior in aqueous solution, has certain adhesion, and sodium alginate can quickly form a gel under extremely mild conditions. 2+ , Sr 2+ In the presence of cations, the Na on the G unit + Ion exchange reaction occurs with divalent cations, and the G units stack to form a cross-linked network structure, thereby forming a hydrogel.

[0020] In some preferred embodiments, the ionic crosslinking agent is selected from one or a combination of calcium gluconate, strontium gluconate, calcium chloride, lithium chloride, magnesium chloride, strontium chloride, and calcium sulfate.

[0021] In some preferred embodiments, the ionic crosslinking agent is added into deionized water to prepare an ionic crosslinking agent aqueous solution.

[0022] In some preferred embodiments, the mass ratio of the ionic crosslinking agent to the deionized water in the solution B is (0.5-3.5):100.

[0023] In order to increase the gelation speed of the cleansing gel mask and reduce the gelation time, in some preferred embodiments, the mass ratio of the ionic crosslinker to deionized water is (0.5-3.5):100. The lower concentration of the ionic crosslinker leads to a slower gelation speed and incomplete gelation, which makes the prepared mask have a larger falling distance; when the concentration of the ionic crosslinker is high, the high concentration of the ionic crosslinker quickly undergoes a crosslinking reaction on the surface of the sodium alginate aqueous solution to form a dense film layer, which hinders the penetration of the ionic crosslinker and prolongs the gelation time. In addition, when the mass ratio of the ionic crosslinker to deionized water is (0.5-3.5):100, a suitable release rate and release amount of the surfactant can also be obtained. The applicant speculates that: after the excessively high concentration of the ionic crosslinker is sprayed on the surface of the alginate aqueous solution, a relatively dense film layer will be quickly formed, which hinders the penetration of the ionic crosslinker, making the interior of the formed cleansing gel mask loose, resulting in the "explosive release" of the surfactant in a short time, which is not conducive to reducing irritation.

[0024] In some preferred embodiments, the aqueous solution of the ionic crosslinking agent is an aqueous solution of calcium gluconate.

[0025] In order to improve the moisturizing performance and gelation speed of the cleansing gel mask gel, in some preferred embodiments, the volume ratio of the sodium alginate aqueous solution to the calcium gluconate aqueous solution is 1: (0.2-2), preferably 1: (0.5-1). If the amount of calcium gluconate aqueous solution is too small, the gelation process will be slow and the gelation integrity will be poor. If the amount is too large, it will cause dripping, which will cause waste on the one hand and affect the user experience on the other.

[0026] In some preferred embodiments, the surfactant is one or a combination of glycerol polyether modified oils, polyethylene glycol modified oils, and sorbitan polyether-30 tetraoleate.

[0027] In some preferred embodiments, the surfactant is added in an amount of 2 to 5 parts by weight of glycerol polyether modified oil, 2 to 5 parts by weight of polyethylene glycol modified oil, and 1 to 5 parts by weight of sorbitan polyether-30 tetraoleate.

[0028] In some preferred embodiments, the adsorbent is one or a combination of mineral mud, activated carbon, bentonite, kaolin, and diatom mud.

[0029] In some preferred embodiments, the adsorbent is activated carbon.

[0030] In some preferred embodiments, the adsorbent is added in an amount ranging from 0.5 to 20 parts by mass of activated carbon, and from 5 to 50 parts by mass of mineral mud, bentonite, kaolin, and diatom mud.

[0031] In some preferred embodiments, the adsorbent is added to the alginate aqueous solution. The dual effects of the hydrogel and the adsorbent allow the gel mask to have a good cleansing effect while showing good water retention performance, so that the skin will not feel tight, achieving a balance between the cleansing effect and the moisturizing effect, unlike traditional mud cleansing masks, which do not sacrifice the moisturizing effect in order to improve the cleansing effect.

[0032] In some preferred embodiments, the step (1) is specifically as follows: adding alginate to deionized water, stirring at 400-1000 rpm for 2-4 hours, and completely dissolving to obtain an alginate aqueous solution; adding an adsorbent and all or part of a surfactant, stirring at 400-1000 rpm for 20-40 minutes, and completely dissolving to obtain a solution A;

[0033] The step (2) is specifically as follows: adding the ionic crosslinking agent into deionized water, stirring at 400-1000 rpm for 0.5-1 h, and completely dissolving the ionic crosslinking agent aqueous solution; adding the remaining surfactant, stirring at 400-1000 rpm for 20-40 min, and completely dissolving the solution B.

[0034] In some preferred embodiments, the volume ratio of solution A to solution B in step (3) is 1:(0.1-2).

[0035] In some preferred embodiments, the volume ratio of solution A to solution B in step (3) is 1:(0.5-1).

[0036] Beneficial effects:

[0037] 1. The present invention uses hydrogel as the mask matrix. Since the hydrogel has the function of keeping the skin moist, long-term application will not cause dry skin. At the same time, the viscosity of the hydrogel can clean and absorb skin impurities. In addition, since the hydrogel is absorbent, it can absorb acne pus and blackheads, effectively repair acne and pimples, and make the skin smoother. The dual effects of hydrogel and adsorbent make the gel mask have good cleaning effect and good water retention performance, so that the skin will not feel tight.

[0038] 2. The cleansing gel mask of the present invention adopts the method of first coating the alginate aqueous solution and then spraying the ionic crosslinking agent aqueous solution, which can be selectively sprayed according to actual needs, and has the advantages of controllable spraying range and shape. In addition, the cleansing gel mask formed has a moist texture, good fit with the skin, and a comfortable feeling when used.

[0039] 3. In the present invention, the surfactant is added separately into the alginate aqueous solution and the ion crosslinker aqueous solution. This separate addition method, on the one hand, reduces the irritation caused by the high concentration of surfactant when the skin comes into contact with the mask, and on the other hand, achieves a good sustained-release effect, further prolongs the action time of the surfactant, maintains a relatively stable action between the surfactant and the skin, and improves the cleansing effect.

[0040] 4. In the present invention, when the mass ratio of alginate to deionized water is (1-6):100, and the mass ratio of ionic crosslinking agent to deionized water is (0.5-3.5):100, the gelling time of the cleansing gel mask can be reduced, slipping during application can be avoided, and the release rate and amount of the surfactant can be reduced.

[0041] 5. In the present invention, the surfactant added to solution A accounts for 30% to 90% of the total mass of the surfactant, which can reduce irritation and obtain a better cleaning effect. DETAILED DESCRIPTION

[0042] Example 1

[0043] Example 1 provides a cleansing gel mask, the raw materials of which include, by weight: 2 parts of alginate, 1 part of ionic crosslinking agent, 3 parts of surfactant, 10 parts of adsorbent and 200 parts of deionized water.

[0044] The alginate is sodium alginate, CAS number: 9005-38-3.

[0045] The ionic crosslinking agent is calcium gluconate, CAS number: 299-28-5.

[0046] The surfactant is sorbitan polyether-30 tetraoleate, CAS number: 63089-86-1.

[0047] The adsorbent is activated carbon, purchased from Jiangsu Hengyuan Activated Carbon Company.

[0048] A preparation method and application of a cleansing gel mask, comprising the following steps:

[0049] (1) Preparation of solution A: Sodium alginate was added to 100 parts of deionized water, stirred for 2 hours at a stirring rate of 800 rpm, and the sodium alginate aqueous solution was obtained after it was completely dissolved; 2.4 parts of sorbitan polyether-30 tetraoleate and activated carbon were added, stirred for 30 minutes at a stirring rate of 500 rpm, and the sodium alginate aqueous solution was obtained after it was completely dissolved.

[0050] (2) Preparation of Solution B: Add calcium gluconate to 100 parts of deionized water, stir for 2 hours at a stirring rate of 800 rpm, and completely dissolve to obtain a calcium gluconate aqueous solution; add 0.6 parts of sorbitan polyether-30 tetraoleate, stir for 30 minutes at a stirring rate of 500 rpm, and completely dissolve to obtain Solution B.

[0051] (3) How to use the cleansing gel mask: Apply solution A evenly to the skin surface, and then spray solution B on the surface of solution A, with the volume ratio of the two being 1:1. After the film is formed, the cleansing gel mask is obtained. After applying it on the skin surface for 30 minutes, the entire piece can be removed.

[0052] Example 2

[0053] Example 2 provides a cleansing gel mask, the raw materials of which include, by weight: 1 part of alginate, 1 part of ionic crosslinking agent, 3 parts of surfactant, 10 parts of adsorbent and 200 parts of deionized water.

[0054] The alginate is potassium alginate, CAS number: 9005-36-1.

[0055] The ionic crosslinking agent is calcium chloride, CAS number: 10043-52-4.

[0056] The surfactant is sorbitan polyether-30 tetraoleate, CAS number: 63089-86-1.

[0057] The adsorbent is activated carbon, purchased from Jiangsu Hengyuan Activated Carbon Company.

[0058] A preparation method and application of a cleansing gel mask, comprising the following steps:

[0059] (1) Preparation of Solution A: Add potassium alginate to 100 parts of deionized water, stir for 2 hours at a stirring rate of 800 rpm, and completely dissolve the potassium alginate aqueous solution; add 2.4 parts of sorbitan polyether-30 tetraoleate and activated carbon, stir for 30 minutes at a stirring rate of 500 rpm, and completely dissolve to obtain Solution A.

[0060] (2) Preparation of Solution B: Add calcium chloride to 100 parts of deionized water, stir for 2 hours at a stirring rate of 800 rpm, and completely dissolve to obtain a calcium chloride aqueous solution; add 0.6 parts of sorbitan polyether-30 tetraoleate, stir for 30 minutes at a stirring rate of 500 rpm, and completely dissolve to obtain Solution B.

[0061] (3) How to use the cleansing gel mask: Apply solution A evenly to the skin surface, and then spray solution B on the surface of solution A, with the volume ratio of the two being 1:1. After the film is formed, the cleansing gel mask is obtained. After applying it on the skin surface for 30 minutes, the entire piece can be removed.

[0062] Example 3

[0063] Example 3 provides a cleansing gel mask, the raw materials of which include, by weight: 5 parts of alginate, 3 parts of ionic crosslinking agent, 3 parts of surfactant, 10 parts of adsorbent and 200 parts of deionized water.

[0064] The alginate is sodium alginate, CAS number: 9005-38-3.

[0065] The ionic crosslinking agent is calcium gluconate, CAS number: 299-28-5.

[0066] The surfactant is sorbitan polyether-30 tetraoleate, CAS number: 63089-86-1.

[0067] The adsorbent is activated carbon, purchased from Jiangsu Hengyuan Activated Carbon Company.

[0068] A preparation method and application of a cleansing gel mask, comprising the following steps:

[0069] (1) Preparation of solution A: Sodium alginate was added to 100 parts of deionized water, stirred for 2 hours at a stirring rate of 800 rpm, and the sodium alginate aqueous solution was obtained after it was completely dissolved; 2.4 parts of sorbitan polyether-30 tetraoleate and activated carbon were added, stirred for 30 minutes at a stirring rate of 500 rpm, and the sodium alginate aqueous solution was obtained after it was completely dissolved.

[0070] (2) Preparation of Solution B: Add calcium gluconate to 100 parts of deionized water, stir for 2 hours at a stirring rate of 800 rpm, and completely dissolve to obtain a calcium gluconate aqueous solution; add 0.6 parts of sorbitan polyether-30 tetraoleate, stir for 30 minutes at a stirring rate of 500 rpm, and completely dissolve to obtain Solution B.

[0071] (3) How to use the cleansing gel mask: Apply solution A evenly to the skin surface, and then spray solution B on the surface of solution A, with the volume ratio of the two being 1:1. After the film is formed, the cleansing gel mask is obtained. After applying it on the skin surface for 30 minutes, the entire piece can be removed.

[0072] Example 4

[0073] Example 4 provides a cleansing gel mask, the raw materials of which include, by weight: 3 parts of alginate, 2 parts of ionic crosslinking agent, 3 parts of surfactant, 10 parts of adsorbent and 200 parts of deionized water.

[0074] The alginate is sodium alginate, CAS number: 9005-38-3.

[0075] The ionic crosslinking agent is calcium gluconate, CAS number: 299-28-5.

[0076] The surfactant is sorbitan polyether-30 tetraoleate, CAS number: 63089-86-1.

[0077] The adsorbent is activated carbon, purchased from Jiangsu Hengyuan Activated Carbon Company.

[0078] A preparation method and application of a cleansing gel mask, comprising the following steps:

[0079] (1) Preparation of solution A: Sodium alginate was added to 100 parts of deionized water, stirred for 2 hours at a stirring rate of 700 rpm, and the sodium alginate aqueous solution was obtained after it was completely dissolved; 2.4 parts of sorbitan polyether-30 tetraoleate and activated carbon were added, stirred for 30 minutes at a stirring rate of 500 rpm, and the sodium alginate aqueous solution was obtained after it was completely dissolved.

[0080] (2) Preparation of Solution B: Add calcium gluconate to 100 parts of deionized water, stir for 2 hours at a stirring rate of 700 rpm, and completely dissolve to obtain a calcium gluconate aqueous solution; add 0.6 parts of sorbitan polyether-30 tetraoleate, stir for 30 minutes at a stirring rate of 500 rpm, and completely dissolve to obtain Solution B.

[0081] (3) How to use the cleansing gel mask: Apply solution A evenly to the skin surface, and then spray solution B onto the surface of solution A, with the volume ratio of the two being 1:0.5. After the film is formed, the cleansing gel mask is obtained. After applying it on the skin surface for 30 minutes, the entire piece can be removed.

[0082] Example 5

[0083] Example 5 provides a cleansing gel mask, and its specific implementation is the same as that of Example 4, except that in the preparation method and application step (3) of the gel mask: the volume ratio of solution A to solution B is 1:0.1.

[0084] Example 6

[0085] Example 6 provides a cleansing gel mask, and its specific implementation is the same as that of Example 4, except that the ionic crosslinking agent is 0.5 parts.

[0086] Example 7

[0087] Example 7 provides a cleansing gel mask, and its specific implementation is the same as that of Example 4, except that in the preparation method and application step (3) of the gel mask: the volume ratio of solution A to solution B is 1:1.

[0088] Example 8

[0089] Example 8 provides a cleansing gel mask, and its specific implementation is the same as that of Example 4, except that in the preparation method and application step (3) of the gel mask: the volume ratio of solution A to solution B is 1:2.

[0090] Example 9

[0091] Example 9 provides a cleansing gel mask, and its specific implementation method is the same as that of Example 4, except that, in the preparation method and application of the gel mask: the surfactant in solution A is 1 part, and the surfactant in solution B is 2 parts.

[0092] Example 10

[0093] Example 10 provides a cleansing gel mask, and its specific implementation method is the same as that of Example 4, except that, in the preparation method and application of the gel mask: the surfactant in solution A is 2.1 parts, and the surfactant in solution B is 0.9 parts.

[0094] Embodiment 11

[0095] Example 11 provides a cleansing gel mask, and its specific implementation method is the same as that of Example 4, except that, in the preparation method and application of the gel mask: the surfactant in solution A is 2.7 parts, and the surfactant in solution B is 0.3 parts.

[0096] Example 12

[0097] Example 12 provides a cleansing gel mask, and its specific implementation method is the same as that of Example 4, except that, in the preparation method and application of the gel mask: the surfactant in solution A is 3 parts, and the surfactant in solution B is 0 parts.

[0098] Comparative Example 1

[0099] Comparative Example 1 provides a cleansing gel mask, the specific implementation of which is the same as that of Example 4, except that the amount of alginate is 7 parts.

[0100] Comparative Example 2

[0101] Comparative Example 2 provides a cleansing gel mask, and its specific implementation is the same as that of Example 3, except that the ionic crosslinking agent is 4 parts.

[0102] Comparative Example 3

[0103] Comparative Example 3 provides a cleansing gel mask, the specific implementation of which is the same as that of Example 2, except that the ionic crosslinking agent is 0.5 parts.

[0104] During the film-forming experiment, it was found that after solution A was applied to the skin surface and then solution B was sprayed, a complete film structure could not be formed for a long time, and the formed film could not be completely torn off. This may be because the concentration of alginate in solution A and the concentration of ionic crosslinker in solution B were both low, so the ionic crosslinking reaction was less and insufficient to form a complete film structure. Therefore, the performance test of the formula of comparative example 3 was no longer carried out subsequently.

[0105] Comparative Example 4

[0106] Comparative Example 4 provides a cleansing gel mask, the specific implementation of which is the same as that of Example 4, except that no surfactant is added.

[0107] Comparative Example 5

[0108] Comparative Example 5 provides a cleansing gel mask, the specific implementation of which is the same as that of Example 4, except that the preparation and application step (3) of the gel mask is as follows: injecting the solutions obtained in step (1) and step (2) into a mold at a volume ratio of 1:1, stirring evenly and then molding to obtain a gel mask.

[0109] Performance Testing Methods

[0110] Mask performance test: The following test method was used to test the cleansing gel masks prepared in Examples 1 to 12, Comparative Examples 1 to 2, and Comparative Examples 4 to 5. All volunteers applied the gel mask to their cheeks according to the correct application method for 20 minutes.

[0111] 1. Fit performance: For the tested embodiments and comparative examples, 20 volunteers aged 20 to 40 were selected for trial experiments. During the mask application, the volunteers maintained normal sitting and simple activities, and the highest position of the mask at the beginning and the end of the application was recorded respectively. The difference between the two was the falling distance (each volunteer was tested 3 times and the average value was taken). The test results are shown in Table 1.

[0112] 2. Gel formation time: For the tested examples and comparative examples, 20 volunteers aged 20 to 40 were selected for each group for trial experiments. Cleansing gel masks were prepared using the methods provided in the examples and comparative examples, and skin tests were performed to observe the gel formation time of the cleansing gel (each volunteer was tested 3 times and the average value was taken). The measured results are recorded in Table 1.

[0113] 3. Mechanical properties: Vaseline was evenly coated on the surface of the prepared cleansing gel mask to avoid a large amount of dehydration, and then the tensile strength of the cleansing gel was tested using a universal mechanical testing machine. The hydrogel was compressed at a speed of 1 mm / min, and the compression strength of the cleansing gel was tested. For each example comparative test, 10 samples were tested (average value was taken), and the average value of the measured values ​​was recorded in Table 1.

[0114] Mask effect test:

[0115] The cleansing gel masks prepared in Examples 1 to 12, Comparative Examples 1 to 2, and Comparative Examples 4 to 5 were tested. All volunteers applied the gel mask to their cheeks according to the correct application method for 20 minutes.

[0116] 1. Moisturizing performance: Referring to the test method of QB / T 4256-2011 "Guidelines for Evaluation of Moisturizing Efficacy of Cosmetics", a capacitance method skin moisture meter was used. For the embodiments and comparative examples to be tested, 30 volunteers aged 20 to 40 were selected for trial use in each group. The volunteers were tested for skin moisture before and after using the cleansing gel mask (each volunteer was measured in three areas, namely the forehead and both cheeks, and the average value was taken). The average value of the measured values ​​was recorded in Table 2.

[0117] 2. Cleanliness: For the tested embodiments and comparative examples, 20 volunteers aged 20 to 40 were selected for trial use. After use, the cleansing gel mask was tested for cleanliness, with 10 being the full score, and the volunteers' experience was recorded. The average of the measured values ​​was recorded in Table 2.

[0118] 3. Physical cooling performance: For the tested embodiments and comparative examples, 10 volunteers aged 20 to 40 were selected in each group for trial experiments. The volunteers were tested for physical cooling performance before and after using the cleansing gel mask (each volunteer was measured in three areas, namely the forehead and both cheeks, and the average value was taken). The average value of the measured values ​​is recorded in Table 2.

[0119] Irritation test:

[0120] The following test method was used to test the cleansing gel masks prepared in Examples 1 to 12, Comparative Examples 1 to 2, and Comparative Examples 4 to 5. For the tested examples and comparative examples, 30 volunteers aged 20 to 45 were selected in each group for trial experiments, and the volunteers did not use any cosmetic products within three days before and after. The cleansing gel mask was evenly applied on the left half of the cheek, and the left and right cheeks were used as controls during the wet application process. The use of the volunteers was observed (if there was irritation during use, it was recorded as irritation), and the skin condition of the patients within three days of using the mask was observed (if there was redness on the skin of the use site, it was recorded as redness). The results were recorded in Table 3.

[0121] Sustained release performance test:

[0122] The alginate aqueous solution prepared in Examples 1 to 12 and Comparative Examples 1 to 2 (the mass of the solution used in each example and comparative example is equal) is poured into a mold to spread it evenly, and then the ionic crosslinking agent aqueous solution is sprayed on its surface according to the formula ratio of the corresponding example or comparative example, and taken out from the mold after molding to obtain a cleansing gel mask with substantially the same shape; the alginate aqueous solution and the ionic crosslinking agent aqueous solution prepared in Comparative Example 5 are poured into the mold in proportion, stirred evenly and waited for molding, and taken out after molding to obtain a gel mask with substantially the same shape. The obtained gel masks are immersed in 200 mL of PBS buffer respectively and placed in a constant temperature water bath shaker at 37°C. 2 mL of liquid is drawn at fixed intervals, and 2 mL of fresh PBS buffer is added to ensure that the total volume is constant. The sustained release of the anti-acne component is measured by HPLC method (3 samples are tested for each sample and the average value is taken). The results are recorded in Table 4.

[0123] Performance test data

[0124] Table 1:

[0125]

[0126] It can be seen from the data in Table 1 that the gel mask prepared in the present invention has excellent moisturizing and hydrating properties, cleaning properties and physical cooling properties, and the mask of the present invention has a short gelling time, is easy to use, has good adhesion, and has good mechanical properties.

[0127] Among them, the gelation time of Example 1, Examples 3-4 and Examples 7-12 is short, basically gelation in about 10 seconds, and the falling distance is less than 1mm. The prepared gel mask can be quickly formed and can be well maintained in the application position to avoid sliding during the application process. The falling distance of Example 2 and Examples 5-6 reaches <5mm, and the gelation time is also relatively long. This is because the concentration of alginate in the alginate aqueous solution used in Example 2 is relatively low, resulting in a lower solution viscosity and a slower gelation speed. The alginate aqueous solution with a lower viscosity is prone to sliding during the gelation process, resulting in a larger falling distance. The amount of ionic crosslinker aqueous solution used in Example 5 is relatively small, resulting in a slow gelation process and poor gelation integrity. The lower concentration of the ionic crosslinker in Example 6 causes the gelation speed to slow down, and the gelation is not complete, so that the prepared mask has a larger falling distance.

[0128] The gelation time of Comparative Example 1 is about 15s, which is longer than that of Example 4. The possible reason is that the alginate concentration is significantly increased in Comparative Example 1, which makes the viscosity of the alginate aqueous solution too high, which is not conducive to the penetration of the ionic crosslinking agent and prolongs the gelation time. Comparative Example 2 is similar to Comparative Example 1 and also has a longer gelation time. The possible reason is that the concentration of the ionic crosslinking agent is increased in Comparative Example 2, and the high concentration of the ionic crosslinking agent quickly undergoes a crosslinking reaction on the surface of the sodium alginate aqueous solution to form a dense film layer, which hinders the penetration of the ionic crosslinking agent and prolongs the gelation time.

[0129] Table 2:

[0130]

[0131] As can be seen from Table 2, there are differences in the scores of cleanliness during the use of volunteers. Among them, the score of Example 3 after use was 8.1, which is slightly low. The possible reason for the analysis is that the higher ion crosslinker concentration in the ion crosslinker aqueous solution causes it to quickly form a film on the surface of the alginate aqueous solution after spraying, which hinders the penetration of the ion crosslinker and the surfactant in the ion crosslinker aqueous solution into the inside, thereby affecting the amount of surfactant reaching the skin surface, resulting in a slightly poor cleaning effect. The cleanliness score of Example 9 after use is low, only 6.9 points. The possible reason for the analysis is that in Example 9, only about 33.3% of the surfactant is added to the alginate aqueous solution that directly contacts the skin. Although the irritation that may be caused by the surfactant can be greatly reduced, a large amount of surfactant needs to gradually penetrate from the surface layer to the inside, resulting in a small amount of surfactant penetrating into the skin surface during the 20-minute application time, which cannot play a good cleaning role, resulting in a poor cleaning effect. The cleaning effects of Examples 10 to 12 are all good.

[0132] No surfactant was added in Comparative Example 4, so the cleaning effect was the worst. In Comparative Example 5, the alginate aqueous solution and the ion crosslinking agent aqueous solution were directly stirred evenly and formed into a mask and then applied to the skin surface. The cleanliness score was only 7.1 points. This may be because the two solutions were stirred evenly and then formed to form a relatively complete and dense gel structure, which firmly trapped the surfactant in the gel system and was difficult to release to the skin surface, so that the solubility in skin oil was poor, which was not conducive to cleaning the skin.

[0133] Table 3:

[0134] Irritant (human) Redness (people) Example 1 0 0 Example 2 0 0 Example 3 0 0 Example 4 0 0 Example 5 0 1 Example 6 1 0 Example 7 0 0 Example 8 0 0 Example 9 0 0 Example 10 0 0 Embodiment 11 0 1 Example 12 1 2 Comparative Example 1 0 1 Comparative Example 2 1 0 Comparative Example 4 0 0 Comparative Example 5 1 0

[0135] It can be seen from the statistical data in Table 3 that only the volunteers who used the gel mask of Example 12 had a higher probability of adverse reactions after use, while the gel masks of other embodiments and comparative examples had a relatively mild actual use effect and a lower probability of adverse reactions. The reason for this may be that the surfactant sorbitol polyether-30 tetraoleate used in Example 12 is irritating, and adding it all to the alginate aqueous solution that directly contacts the skin makes the concentration directly contacted by the skin higher on the one hand, and the release rate is faster on the other hand, so that adverse reactions are prone to occur. It can be seen that although adding all the surfactants to the alginate aqueous solution shows a better cleaning effect (the highest cleanliness in Table 2), it will also produce a higher irritation to the skin. Therefore, it is necessary to find a balance between cleanliness and irritation. The present application adds 30% to 90% (preferably 70% to 90%) of the surfactant to the alginate aqueous solution to achieve this balance well.

[0136] Table 4:

[0137]

[0138] It can be seen from the results in Table 4 that the surfactant release rate and release amount of the gel mask prepared in each embodiment are good. Among them, in Example 3, it may be because the higher concentration of the ion crosslinker aqueous solution sprayed on the surface of the alginate aqueous solution quickly formed a denser film layer, which hindered the penetration of the ion crosslinker into the interior, making the interior of the gel mask loose, and the initial 5min release rate of the surfactant was faster. Examples 5 to 6 respectively used less and lower concentration ion exchanger aqueous solutions, and the gelation was incomplete, making the overall structure of the gel relatively loose, so the release rate of the surfactant at 5min and 15min was faster. In Example 9, more surfactants were added to the ion crosslinker aqueous solution. Since the gel structure was relatively complete, the release amount at 5min was not much different, but the release amount reached 50.56% at 15min. The possible reason for the analysis was that too much surfactant accumulated in the surface layer and failed to penetrate deeply into the gel, resulting in a higher release amount at 15min. In Examples 11 to 12, more surfactants are added to the alginate aqueous solution. The 5-min release amounts of both are relatively high, but the 15-min release amount is not much different from that of Example 4. The possible reason is that the gel structure formed by the coating-first-and-then-spraying method is close to a "trumpet" shape from the surface to the inside. The closer to the inside (the skin side or the alginate aqueous solution coating side), the larger the channel diameter, the easier it is for the effective ingredients carried in the gel to be released, and the subsequent release gradually tends to balance, resulting in a higher release amount around 5 minutes, and the release amount at 15 minutes is not much different from that of Example 4.

[0139] The active ingredient release of Comparative Example 1 reached 50.79% at 15 minutes. The possible reason is that the concentration of the alginate aqueous solution in Comparative Example 1 is too high, and the viscosity of the solution is high, which hinders the penetration of the ionic crosslinking agent, resulting in the formation of a dense gel structure on the surface, but the interior is loose, causing the surfactant to "explode" in a short time. Comparative Example 2 is similar to Comparative Example 1. The surfactant is released quickly in a short time. The possible reason is that the concentration of the ionic crosslinking agent in Comparative Example 2 is too high, resulting in the rapid formation of a dense crosslinked network on the surface, which hinders the penetration of the ionic crosslinking agent, making the interior of the formed gel mask loose, and also causing the surfactant to "explode" in a short time.

[0140] The overall release rate of the surfactant in Comparative Example 5 is slow, and the total amount released is low. The possible reason is that in the preparation process of Comparative Example 5, the alginate aqueous solution and the ion crosslinker aqueous solution are evenly stirred and then formed, and the formed gel structure is relatively complete and dense, which blocks the surfactant in the gel system, which is not conducive to the release of the surfactant, resulting in a slow overall release rate and a low total amount released.

Claims

1. A cleansing gel mask, characterized in that: The raw materials include, by weight: 2-5 parts of alginate, 1-3 parts of ionic crosslinking agent, 1-5 parts of surfactant, 0.5-50 parts of adsorbent and 150-250 parts of deionized water; It is prepared by the following method: (1) Preparation of solution A: Add alginate to part of deionized water, stir at 400-1000 rpm for 2-4 hours, and completely dissolve to obtain alginate aqueous solution; add adsorbent and 70-80 wt% surfactant, stir at 400-1000 rpm for 20-40 minutes, and completely dissolve to obtain solution A; (2) Preparation of solution B: Add the ionic crosslinker to the remaining deionized water, stir at 400-1000 rpm for 0.5-1 h, and completely dissolve to obtain an aqueous solution of the ionic crosslinker; add the remaining surfactant, stir at 400-1000 rpm for 20-40 min, and completely dissolve to obtain solution B; (3) evenly applying solution A to the skin surface, and then spraying solution B onto the surface of solution A. After film formation, a cleansing gel mask is obtained; The ionic crosslinking agent is calcium gluconate; The surfactant is sorbitan polyether-30 tetraoleate; The mass ratio of alginate to part of deionized water in the solution A is (2-6):100; the mass ratio of ionic crosslinking agent to the remaining deionized water in the solution B is (1-2):100; In step (3), the volume ratio of solution A to solution B is 1:(0.5-1); The gelling time of the cleansing gel mask is within 10 seconds.

2. The cleansing gel mask according to claim 1, characterized in that: The alginate is one or a combination of sodium alginate, potassium alginate, lithium alginate and calcium alginate.

3. The cleansing gel mask according to claim 1, characterized in that: The adsorbent is mineral mud.

4. The cleansing gel mask according to claim 1, characterized in that: The adsorbent is one or a combination of activated carbon, bentonite, kaolin and diatom mud.

5. The cleansing gel mask according to claim 1, characterized in that: The adsorbent is activated carbon.

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