Gel with oil control and moisturizing effects as well as preparation method and application thereof

Abstract

The invention provides gel with oil control and moisturizing effects as well as a preparation method and application thereof, and belongs to the technical field of daily chemicals. The gel provided by the invention comprises the following components in percentage by weight: 0.25-3% of polyquaternium-37; 2%-6.5% of glycerol; 2%-8.5% of butanediol; 70.15% to 90.55% of water; 0.8%-8% of ethanol; 0.25% to 4% of D-panthenol; 1%-2.5% of nicotinamide; and 0.15%-0.35% of a rosewood seed extract. The gel obtained by the invention has the effects of astringing, controlling oil, moisturizing and scavenging free radicals. By adopting the gel obtained by the invention, the skin acid-base balance, charge balance and grease secretion balance can be regulated while timely and long-acting oil control is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of daily chemicals, and in particular relates to a gel with oil-controlling and moisturizing effects, and a preparation method and application thereof. Background Art

[0002] The skin covers the entire surface of the human body. It is flexible and elastic, and can be pushed and stretched within a certain range. The thickness of the skin varies with age, gender, and location. As the largest organ in the human body, it accounts for about 8% of the total weight of the body. The skin contains about 1 / 3 of the body's circulating blood and 1 / 4 of the water. It is composed of three parts: the epidermis, dermis, and subcutaneous tissue. It is also part of the respiratory system, with the functions of absorption and excretion, protecting the body from pollution and damage, and can continuously renew itself every 27 days.

[0003] Each square inch of skin has 65 hair follicles, which contain sebaceous glands that secrete oil and sweat glands that secrete water. The acid mantle is a natural mixture of this oil and water that covers and protects the outer layer of skin from bacteria, sunlight and pollution. The pH value of healthy skin is between 4.5 and 6. The integrity of the acid mantle depends on whether the secretion of sebaceous glands and sweat glands is balanced. Human skin is in a negative ion state under physiological pH conditions. The epidermis is the thinnest layer of the skin and protects the human body from the harsh environment. The epidermis includes different types to determine the hardness of the skin, the color of the skin, and the body's defense against foreign objects. The dermis is the last layer of the skin and includes blood vessels, hair follicles, sebaceous glands, and pain and sensory cells. The fibrous cells in this layer secrete collagen, which has a supporting role, and proteins that make the skin elastic. Collagen is the most abundant protein in the skin. 75% of the skin is made up of collagen. It prevents the skin from wrinkles and fine lines. Elastin makes the skin and organs well-defined and elastic. Aging skin and environmental factors, such as sunburn, reduce the skin's ability to secrete collagen and elastin, causing wrinkles. The subcutaneous tissue contains sweat glands, fat, and collagen cells. It helps maintain the body's temperature and protects the internal organs. The blood vessels in this layer are directly connected to the internal organs. Arteries deliver oxygen and nutrients to the skin, while veins carry away metabolic waste. As people age, their body functions decline and the nutrient supply is insufficient. The subcutaneous tissue thins, causing the skin to sag. The millions of pores and hair follicles on the surface of the body are essential to the body's natural cleansing function. Healthy skin must have unobstructed pores, balanced secretion of sebaceous glands and sweat glands, an intact acid mantle, and pure blood. Such skin is naturally as natural as a pearl. To keep the skin, a complex and fragile system, full of vitality, it needs proper nutrition, balance, and cleansing, just like other organs in the body. Only in this way can the skin glow with inherent health and beauty.

[0004] However, there are many types of oil-controlling and moisturizing cosmetics, and the quality of the products varies. Some products may also cause obvious negative effects such as allergies, dry skin, and roughness. The main reason is that these cosmetics contain preservatives or irritating ingredients that are prone to allergies. Some oil-controlling and moisturizing cosmetics may also cause skin acid-base and nutritional imbalances, resulting in poor oil-control and moisturizing effects. Therefore, there is an urgent need for an oil-controlling and moisturizing cosmetic that can adjust the skin's acid-base balance, charge balance, and oil secretion balance. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a gel with oil-controlling and moisturizing effects, and a preparation method and application thereof. The present invention balances the negative ions on the skin surface by using cationic raw materials, and utilizes the transdermal properties of vitamin B3 and D-panthenol and cationic active substances to jointly inhibit excessive secretion of sebaceous glands. Adding mahogany seed extract can effectively inhibit the differentiation of sebaceous gland cells and block excessive keratinization, thereby obtaining a gel with astringent, oil-controlling, moisturizing, and free radical scavenging effects. While timely and long-lasting oil control, the gel can regulate the skin's acid-base balance, charge balance, and oil secretion balance.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] The present invention provides a gel with oil-controlling and moisturizing effects, the gel comprising the following components in percentage by weight:

[0008] Polyquaternium-37 0.25%~3%; Glycerin 2%~6.5%; Butylene glycol 2%~8.5%; Water 70.15%~90.55%; Ethanol 0.8%~8%; D-panthenol 0.25%~4%; Niacinamide 1%~2.5%; Redwood seed extract 0.15%~0.35%.

[0009] Preferably, the water is deionized water.

[0010] The present invention provides a method for preparing the gel, comprising the following steps:

[0011] (1) After uniformly mixing polyquaternium-37, glycerol, butylene glycol and 60.15% to 80.55% of water, the mixture is heated to 80 to 90° C. under vacuum conditions to obtain material 1;

[0012] (2) When the temperature of material 1 is reduced to 40-50° C., the material 1 is mixed with ethanol and stirred to obtain material 2;

[0013] (3) D-panthenol, niacinamide, and mahogany seed extract are mixed with the remaining water, and then mixed with material 2 to obtain a gel with oil-controlling and moisturizing effects.

[0014] Preferably, the vacuum degree of the vacuum condition is -0.03 to -0.07 MPa.

[0015] Preferably, the stirring time is 5 to 15 minutes.

[0016] The present invention also provides the use of the gel or the gel obtained according to the preparation method in preparing cosmetics with oil-controlling and moisturizing effects.

[0017] The present invention also provides a cosmetic with oil-controlling and moisturizing effects, wherein the cosmetic contains the gel.

[0018] Preferably, the cosmetics include lotion, cream and mask.

[0019] Compared with the prior art, the present invention has the following beneficial effects: first, the present invention uses the positive charge in the raw material of polyquaternium-37 to balance the negative ions on the surface of the skin, which softens the skin and removes free radicals while having the effect of sterilization and anti-inflammatory. Then, by utilizing the good transdermal properties of vitamin B3 and D-panthenol, some cationic active substances, D-panthenol and vitamin B3 act together on the epidermis and dermis, inhibiting the activity of 5α-reductase and then achieving the function of inhibiting excessive secretion of sebaceous glands. Vitamin B3 is converted into NDA and NDAP coenzymes in skin cells, thereby enhancing the DNA repair mechanism, stimulating the production of structural proteins and lipids in the epidermis and collagen in the dermis, and helping the cell structure to gradually restore its integrity. Finally, the use of mahogany seed extract can reduce the sebum synthesis induced by serum, effectively inhibit the differentiation of sebaceous gland cells, block the signals causing excessive keratinization, and avoid enlarged pores. The present invention obtains a gel with astringent, oil-controlling, moisturizing and free radical scavenging effects by optimizing the ratio of several raw materials. While timely and long-lasting oil control, it can regulate the skin's acid-base balance, charge balance and oil secretion balance. DETAILED DESCRIPTION

[0020] The present invention provides a gel with oil-controlling and moisturizing effects, the gel comprising the following components in percentage by weight:

[0021] Polyquaternium salt-370.25% to 3%, preferably 0.3% to 1.8%, more preferably 0.5%;

[0022] Glycerol 2% to 6.5%, preferably 4% to 6%, more preferably 4.5%;

[0023] Butanediol 2% to 8.5%, preferably 2.5% to 7.5%, more preferably 6%;

[0024] Water 70.15% to 90.55%, preferably 77.4% to 84%, more preferably 79.77%, wherein the water is deionized water;

[0025] Ethanol 0.8% to 8%, preferably 2% to 7%, more preferably 5%;

[0026] D-panthenol 0.25% to 4%, preferably 1.5% to 3%, more preferably 2.5%;

[0027] Niacinamide 1% to 2.5%, preferably 1.3% to 2.3%, more preferably 1.5%;

[0028] The content of the annatto seed extract is 0.15% to 0.35%, preferably 0.2% to 0.3%, and more preferably 0.23%.

[0029] In the present invention, polyquaternium-37 is a homopolymer of quaternary ammonium salt, has significant cationic properties, has very obvious affinity on the skin surface, has softening, bactericidal and antibacterial functions, and can inhibit the activity of 5α-reductase, and has a significant effect on oil control;

[0030] Glycerin, also known as propylene glycol, is a hygroscopic agent that can absorb or retain moisture from the air, help keep the skin moist and reduce water loss; it can soften the stratum corneum, make the skin softer, and help improve dryness and peeling; it helps repair damaged skin barriers and enhance the skin's defense capabilities; it helps create a moist environment, which is conducive to cell regeneration and helps promote wound healing; it can provide a protective layer to reduce direct contact of external substances with the skin, thereby reducing skin irritation;

[0031] Butylene glycol, also known as 1,3-butylene glycol, is a small molecule moisturizer that can penetrate the skin surface, help the skin retain moisture, and reduce water evaporation, thereby playing a moisturizing role; it can help dissolve other ingredients in skin care products to make the product texture more uniform; it can help other skin care ingredients better penetrate into the skin and improve the efficacy of the product; the anti-inflammatory effect of butanediol can help reduce skin inflammation and soothe the skin; the antibacterial effect of butanediol can help products maintain hygiene, reduce the risk of skin infection, and increase product stability and extend the shelf life of products;

[0032] Ethanol is one of the common ingredients in skin care products. It can dissolve many other skin care ingredients, making the product texture uniform and easy to apply. It can help active ingredients penetrate the skin better and improve the efficacy of the product. It can shrink pores and make the skin surface look smoother and tighter. The disinfection and bactericidal effects of ethanol can reduce bacteria on the skin surface and prevent acne and other skin infections. Ethanol evaporates quickly and can bring a cool and refreshing feeling to the user, helping to control the oiliness of the skin surface and reduce greasiness. It is suitable for oily and combination skin.

[0033] D-panthenol, common name: provitamin B5, chemical name: D-2,4-dihydroxy-N-(3-hydroxypropyl)-3,3-dimethylbutyramide, colorless, transparent and viscous liquid. D-panthenol is a precursor of coenzyme A, which can promote the metabolism of human protein, fat and sugar, protect the skin and mucous membranes, improve the color and luster of hair, and prevent the occurrence of diseases. The skin care effect is manifested as a deeply penetrating moisturizer, stimulating the growth of epithelial cells, promoting wound healing, and playing an anti-inflammatory role;

[0034] Niacinamide, also known as vitamin B3, is widely recognized for its whitening, anti-aging, and metabolism-promoting effects on the skin. The water-soluble micromolecules of vitamin B3 can penetrate deeply into the skin and be converted into NDA and NDAP coenzymes in skin cells, thereby enhancing the DNA repair mechanism, stimulating the production of structural proteins and lipids in the epidermis and collagen in the dermis, helping the cell structure to gradually restore its integrity, thereby effectively improving various skin problems. The whitening effect of vitamin B3 is reflected in three aspects: first, it inhibits the transfer of melanin from melanocytes to protein cells and reduces excessive pigmentation; this function is different from the previous whitening ingredients that only focus on inhibiting the production of melanin, but acts on the melanin that has already been produced, so that people can improve the skin color from the production to the shedding of melanin; second, it accelerates skin metabolism, promotes the shedding of keratinocytes containing melanin, and at the same time maintains the cell balance level, showing a youthful state; third, it promotes the synthesis of epidermal protein, enhances the water content of the skin, and thus improves skin quality;

[0035] Rosewood seed extract. Rosewood originated in tropical America, but has also been cultivated in South Asia since the 17th century. After the fruit is harvested, it is dried and the wax around the seed is extracted, which is rich in carotene. Rosewood seed extract can reduce serum-induced sebum synthesis; effectively inhibit the differentiation of sebaceous gland cells; effectively inhibit lipid synthesis; block the signal that causes excessive keratinization and avoid enlarged pores.

[0036] The present invention provides a method for preparing the gel, comprising the following steps:

[0037] (1) After uniformly mixing polyquaternium-37, glycerol, butylene glycol and 60.15% to 80.55% of water, the mixture is heated to 80 to 90° C. under vacuum conditions to obtain material 1;

[0038] (2) When the temperature of material 1 is reduced to 40-50° C., the material 1 is mixed with ethanol and stirred to obtain material 2;

[0039] (3) D-panthenol, niacinamide, and mahogany seed extract are mixed with the remaining water, and then mixed with material 2 to obtain a gel with oil-controlling and moisturizing effects.

[0040] In the present invention, polyquaternium-37, glycerol, butylene glycol and 60.15% to 80.55% water are uniformly mixed and heated to 80 to 90° C. under vacuum conditions to obtain material 1; the 60.15% to 80.55% water is 60.15% to 80.55% of the gel weight percentage of water, preferably 67.4% to 74%, more preferably 69.77%. The vacuum degree of the vacuum condition is -0.03 to -0.07 MPa, preferably -0.05 MPa; the heating is preferably heated to 85° C., and the heating process is preferably accompanied by stirring, and the stirring speed is 500 to 1500 rpm, preferably 800 to 1200 rpm, and more preferably 1000 rpm; in the specific implementation of the present invention, the above operation is preferably carried out in an emulsifying pot.

[0041] In the present invention, when the temperature of material 1 is reduced to 40-50°C, it is mixed with ethanol and stirred to obtain material 2; the temperature is preferably reduced to 45°C; the stirring speed is 500-1500rpm, preferably 800-1200rpm, more preferably 1000rpm, and the stirring time is 5-15min, preferably 7-12min, more preferably 10min; in the specific implementation process of the present invention, the above operation is preferably carried out in an emulsifying pot; the vacuum degree of the emulsifying pot is -0.03-0.07mpa, preferably -0.05mpa.

[0042] In the present invention, after D-panthenol, niacinamide, and rosewood seed extract are mixed with the remaining water, the mixture is mixed with material 2 to obtain a gel having an oil-controlling and moisturizing effect; after D-panthenol, niacinamide, and rosewood seed extract are dispersed in the remaining water, the mixture is mixed with material 2 to obtain a gel having an oil-controlling and moisturizing effect. In the specific implementation of the present invention, the above operation is preferably performed in an emulsifying pot.

[0043] The present invention also provides the use of the gel or the gel obtained according to the preparation method in preparing cosmetics with oil-controlling and moisturizing effects.

[0044] The present invention also provides a cosmetic with oil-controlling and moisturizing effects, wherein the cosmetic contains the gel.

[0045] In the present invention, the cosmetics include lotions, creams and facial masks.

[0046] In the present invention, the use of cosmetics containing the gel can significantly improve the oil content of the skin, the moisture content of the stratum corneum, and enhance the skin barrier function.

[0047] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0048] Example 1

[0049] A gel with oil-controlling and moisturizing effects, the formula of which is: 0.3 g of polyquaternium-37; 2 g of glycerin; 7.5 g of butylene glycol; 84 g of deionized water; 2 g of ethanol; 3 g of D-panthenol; 1 g of niacinamide; and 0.2 g of mahogany seed extract.

[0050] Preparation method:

[0051] (1) After polyquaternium-37, glycerol, butylene glycol and 74 g of deionized water are mixed uniformly, the mixture is added to an emulsifying pot, the vacuum degree of the emulsifying pot is set to -0.05 MPa, and the mixture is stirred and heated to 85° C. at 1000 rpm to obtain material 1;

[0052] (2) Turn on the cooling mode, when the temperature of material 1 drops to 45°C, add ethanol, and stir at 1000 rpm for 5 min to obtain material 2;

[0053] (3) D-panthenol, niacinamide, and mahogany seed extract are mixed with the remaining deionized water, and then mixed with material 2 to obtain a gel with oil-controlling and moisturizing effects.

[0054] Example 2

[0055] A gel with oil-controlling and moisturizing effects, the formula of which is: 370.5 g of polyquaternium salt; 4.5 g of glycerin; 6 g of butylene glycol; 79.77 g of deionized water; 5 g of ethanol; 2.5 g of D-panthenol; 1.5 g of niacinamide; and 0.23 g of mahogany seed extract.

[0056] Preparation method:

[0057] (1) After polyquaternium-37, glycerol, butylene glycol and 69.77 g of deionized water are mixed evenly, the mixture is added to an emulsifying pot, the vacuum degree of the emulsifying pot is set to -0.05 MPa, and the mixture is stirred and heated to 85° C. at 1000 rpm to obtain material 1;

[0058] (2) Turn on the cooling mode, when the temperature of material 1 drops to 45°C, add ethanol, and stir at 1000 rpm for 5 min to obtain material 2;

[0059] (3) D-panthenol, niacinamide, and mahogany seed extract are mixed with the remaining deionized water, and then mixed with material 2 to obtain a gel with oil-controlling and moisturizing effects.

[0060] Example 3

[0061] A gel with oil-controlling and moisturizing effects, the formula of which is: 371 g of polyquaternium salt; 5.5 g of glycerin; 4.5 g of butylene glycol; 78.25 g of deionized water; 6.5 g of ethanol; 2 g of D-panthenol; 2 g of niacinamide; and 0.25 g of mahogany seed extract.

[0062] Preparation method:

[0063] (1) After polyquaternium-37, glycerol, butylene glycol and 68.25 g of deionized water are mixed evenly, the mixture is added to an emulsifying pot, the vacuum degree of the emulsifying pot is set to -0.03 MPa, and the mixture is stirred and heated to 80° C. at 1000 rpm to obtain material 1;

[0064] (2) Turn on the cooling mode, when the temperature of material 1 drops to 40°C, add ethanol, and stir at 1000 rpm for 5 min to obtain material 2;

[0065] (3) D-panthenol, niacinamide, and mahogany seed extract are mixed with the remaining deionized water, and then mixed with material 2 to obtain a gel with oil-controlling and moisturizing effects.

[0066] Example 4

[0067] A gel with oil-controlling and moisturizing effects, the formula of which is: 371.8g of polyquaternium salt; 6g of glycerin; 2.5g of butylene glycol; 77.4g of deionized water; 8g of ethanol; 1.5g of D-panthenol; 2.5g of niacinamide; and 0.3g of mahogany seed extract.

[0068] Preparation method:

[0069] (1) After polyquaternium-37, glycerol, butylene glycol and 67.4 g of deionized water are mixed evenly, the mixture is added to an emulsifying pot, the vacuum degree of the emulsifying pot is set to -0.07 MPa, and the mixture is stirred and heated to 85° C. at 1000 rpm to obtain material 1;

[0070] (2) Turn on the cooling mode, when the temperature of material 1 drops to 45°C, add ethanol, and stir at 1000 rpm for 15 min to obtain material 2;

[0071] (3) D-panthenol, niacinamide, and mahogany seed extract are mixed with the remaining deionized water, and then mixed with material 2 to obtain a gel with oil-controlling and moisturizing effects.

[0072] Experimental example: Product performance test

[0073] 1. Subjects

[0074] A total of 18 eligible subjects (11 females and 7 males) were enrolled, 17 of whom completed the study, with valid data for 16 cases (10 females and 6 males).

[0075] 2. Inclusion criteria

[0076] Female (60%) or male (40%), aged 18 to 45 years old (age calculated from the start date of the test); physically and mentally healthy; self-reported facial skin as insensitive; self-reported facial skin as oily or mixed oily; the test area has not participated in any cosmetic clinical research within three months; able to read and understand all contents of the informed consent form and voluntarily sign the informed consent form; agree to provide accurate personal information; be willing to report to the researchers immediately if they feel unwell during the study; be able to cooperate well with the experimenters, attend all research sessions on time, and comply with all requirements.

[0077] This trial is a single-center test with a single-blind design and full-face use. Each subject uses one product. The test items include image capture and instrument testing.

[0078] 3. Test steps

[0079] 1) Explain the study to the subjects and have them sign the informed consent form;

[0080] 2) The subject cleans the face with warm water and facial cleanser, then uses dust-free paper to dry the water, enters the constant temperature and humidity laboratory (test environment temperature: 21.0±1.0℃, humidity: 50%±10%RH), and sits quietly for 20 minutes;

[0081] 3) The researchers will conduct on-site screening of the visiting subjects according to the requirements of the research protocol;

[0082] 4) Perform image capture and probe testing on subjects who have passed the screening;

[0083] 5) The subjects used the test product on site according to the instructions;

[0084] 6) Distribute the product and provide product usage instructions to the subjects;

[0085] 7) During the test, the subjects used the product at home;

[0086] 8) The subjects used the samples for 4 consecutive weeks and were followed up after one week (W1), two weeks (W2), and four weeks (W4) of use for image capture and probe testing, which were compared with the results before use (W0).

[0087] 4. Completion status of the trial, see Table 1: 30 people were screened, 19 were enrolled, 17 were actually completed, and 16 cases had valid data.

[0088] Table 1 Subject information

[0089]

[0090] Note: 2 cases of early termination were due to the subjects’ early withdrawal due to personal reasons, and 1 case of invalid data was due to the abnormal skin condition of the subject.

[0091] 5. Test result statistical method

[0092] SPSS software was used to perform descriptive statistics on the measured values ​​of each test area, including quantity, mean, and standard deviation, etc. The difference between the samples before and after use was calculated.

[0093] Difference analysis: The measured values ​​at each time point were tested for normal distribution. If they were normally distributed, a t-test was performed. If they were not normally distributed, a Wilcoxon test was performed for the comparison before and after.

[0094] The above statistical analyses were all two-tailed tests, with a significance level of α = 0.05.

[0095] 6. Oil control related parameters

[0096] The product obtained in Example 1 was used as a sample, and the skin oil content of the subjects was tested at W0, W1, W2, and W4 using a skin oil tester (Sebumeter SM815, Courageand Khazaka, Germany). The results are shown in Tables 2 and 3. The smaller the value, the less skin oil content.

[0097] Table 2 Results of skin oil content test on subjects at different periods

[0098]

[0099] Table 3 Oil control related parameters before and after use

[0100]

[0101] Note: Compared with W0 before use, the significant difference level: * indicates p<0.05, ** indicates p<0.01, *** indicates p<0.001.

[0102] It can be seen from Table 2 and Table 3 that, compared with before use, after using the product of Example 1 for 1 week, 2 weeks and 4 weeks, the skin oil content decreased, showing a significant improvement.

[0103] 7. Moisturizing related parameters

[0104] The product obtained in Example 2 was used as a sample, and the moisture content of the stratum corneum of the subjects' skin was tested at W0, W1, W2, and W4 using a skin moisture tester (Corneometer, CM825, C&K, Germany). The specific results are shown in Tables 4 and 5. The larger the value, the more hydrated the skin.

[0105] Table 4 Test results of moisture content of the stratum corneum of the subjects' skin at different periods

[0106]

[0107] Table 5 Moisturizing related parameters before and after use

[0108]

[0109] It can be seen from Tables 4 and 5 that, compared with before use, after using the product of Example 2 for 1 week, 2 weeks and 4 weeks, the moisture content of the stratum corneum increased, showing a significant improvement.

[0110] 8. Repair related parameters

[0111] The product obtained in Example 2 was used as a sample, and the transepidermal water loss (TEWL) of the subjects' skin was tested at W0, W1, W2, and W4 using a skin water loss tester (Vapometer, Delfin, Finland). The results are shown in Tables 6 and 7. The smaller the value, the less transepidermal water loss and the better the skin barrier function.

[0112] Table 6 Results of transepidermal water loss test on subjects at different periods

[0113]

[0114] Table 7 Repair related parameters before and after use

[0115]

[0116] It can be seen from Tables 6 and 7 that, compared with before use, TEWL decreased after using the product for 4 weeks, showing a significant improvement.

[0117] A total of 17 subjects completed this test, with a total of 16 valid data. All 16 subjects were East Asian skin types with mild or moderate oil secretion on their faces. 62% were female subjects and 38% were male subjects. No adverse events were reported in this test. Among them, compared with before use, the data after using the product obtained by the present invention for 1 week showed that the improvement rate of skin oil content was 14.4%, and the improvement rate of stratum corneum moisture content was 13.2%, both of which were significantly improved. After using the product obtained by the present invention for 4 weeks, the TEWL improvement rate was 11.6%, which was significantly improved, indicating that the product of the present invention has good oil control and moisturizing effects.

[0118] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A gel with oil-controlling and moisturizing effects, characterized in that: The gel comprises the following components in weight percentage: Polyquaternium-37 0.25%~3%; Glycerin 2%~6.5%; Butylene glycol 2%~8.5%; Water 70.15%~90.55%; Ethanol 0.8%~8%; D-panthenol 0.25%~4%; Niacinamide 1%~2.5%; Redwood seed extract 0.15%~0.35%.

2. The gel according to claim 1, characterized in that The water is deionized water.

3. The method for preparing the gel according to claim 1 or 2, characterized in that: The following steps are involved: (1) After uniformly mixing polyquaternium-37, glycerol, butylene glycol and 60.15% to 80.55% of water, the mixture is heated to 80 to 90° C. under vacuum conditions to obtain material 1; (2) When the temperature of material 1 is reduced to 40-50° C., the material 1 is mixed with ethanol and stirred to obtain material 2; (3) D-panthenol, niacinamide, and mahogany seed extract are mixed with the remaining water, and then mixed with material 2 to obtain a gel with oil-controlling and moisturizing effects.

4. The preparation method according to claim 3, characterized in that: The vacuum degree of the vacuum condition is -0.03 to -0.07 MPa.

5. The preparation method according to claim 3, characterized in that: The stirring time is 5 to 15 minutes.

6. Use of the gel according to claim 1 or 2 or the gel obtained by the preparation method according to claims 3 to 6 in preparing cosmetics with oil-controlling and moisturizing effects.

7. A cosmetic with oil control and moisturizing effects, characterized in that: The cosmetic contains the gel according to claim 1.

8. The cosmetic according to claim 7, characterized in that: The cosmetics include lotions, creams and facial masks.

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