Mask with mild nourishing effect and preparation method

Abstract

The invention relates to a mask with a mild nourishing effect and a preparation method of the mask. The mask liquid is prepared from the following components in parts by weight: 0.05 to 0.3 part of N-acetylneuraminic acid, 0.01 to 0.05 part of histidine, 0.1 to 0.5 part of tetrahydromethylpyrimidine carboxylic acid and 0.4 to 9.5 parts of emollient. The three active components are matched with the emollient to be compounded to obtain the mask with the mild nourishing effect, all the components are matched with one another, the nourishing and repairing effect of the mask can be remarkably improved, the skin smoothness and the overall glossiness can be improved, the multi-way and excellent nourishing and moisturizing effects of the mask are achieved, and the mask is suitable for being used in a large scale. The skin care demands of consumers on overall and comprehensive improvement of dry and rough skin and other states are met.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a facial mask with mild nourishing effect and a preparation method thereof. Background Art

[0002] With the continuous development of the skin care market, facial masks, as a convenient and effective skin care product, have received widespread attention and use. Most of the common facial masks on the market are water-based, designed to provide instant hydration and instant moisture, but they often lack sufficient oil ingredients, resulting in limited moisturizing effects. The rapid evaporation of water causes the skin to become dry again soon after use, and it is impossible to maintain a moist state for a long time. In addition, the absorption effect of water-based ingredients on the surface of the skin is also limited, and it is impossible to deeply nourish the skin. The oil on the surface of the skin is an important component for maintaining skin moisture and barrier function, and pure water-based products cannot effectively penetrate into the deep layers of the skin, and the long-term moisturizing and nourishing effects are greatly reduced. Therefore, skin care products containing certain oil ingredients can better promote the absorption of nutrients and improve skin care effects. The oil ingredients can form a protective film to slow down water evaporation and help maintain the moisture balance of the skin.

[0003] Therefore, in order to meet consumers' higher demands for skin care effects, developing a composite mask with oil ingredients, and then using the unique skin care method of the facial mask to form a closed environment with the skin to improve the efficiency of nutrient absorption is an important direction for the development of future skin care products. This can not only improve user experience, but also more effectively solve skin problems such as dryness and dehydration, and achieve a lasting nourishing effect. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a facial mask with mild nourishing effect and a preparation method thereof.

[0005] To achieve the above objectives, the technical solutions adopted by the present invention include:

[0006] In a first aspect, the present invention provides a facial mask with mild nourishing effect, comprising a facial mask liquid and a facial mask cloth, wherein the facial mask liquid comprises the following components in parts by weight: 0.05-0.3 parts of N-acetylneuraminic acid, 0.01-0.05 parts of histidine, 0.1-0.5 parts of ectoine and 0.4-9.5 parts of an emollient.

[0007] The tetrahydromethylpyrimidine carboxylic acid described in the present invention can promote the metabolism of skin cells and promote collagen synthesis, thereby achieving soothing and repairing effects; N-acetylneuraminic acid can enhance skin hydration, improve dry skin problems, and enhance the antioxidant effect of the mask and brighten the skin tone; histidine is a natural moisturizing factor that can effectively maintain the moisture balance of the skin and prevent moisture loss, and can enhance the permeability of other active ingredients in the skin and promote ingredient absorption, thereby improving the overall efficacy of the product.

[0008] The present invention has found through a large number of experiments and investigations that a facial mask with mild nourishing effect is prepared by compounding three active components of N-acetylneuraminic acid, histidine, and ectoine with a moisturizer. The components cooperate with each other and influence each other, which can significantly enhance the nourishing and repairing effect of the facial mask, improve skin smoothness and overall glossiness, and is suitable for various skin types, especially sensitive and dry skin. Moreover, there is an obvious synergistic effect between the three active ingredients of ectoine, histidine, and N-acetylneuraminic acid. When any one or more of the three components are missing, the nourishing and repairing effect of the prepared facial mask is significantly reduced.

[0009] In addition, the inventors explored the dosage of each component and found that when the dosage ratio of the three active ingredients, ectoine, histidine and N-acetylneuraminic acid, exceeds the specified range of the present invention, the synergistic effect between the components is not obvious and even produces an antagonistic effect, which leads to a decrease in the moisturizing, repairing and mild nourishing effects of the facial mask, indicating that the above three components have an ideal synergistic effect within the preferred range of the present invention.

[0010] Preferably, the facial mask liquid comprises the following components in parts by weight: 0.05-0.2 parts of N-acetylneuraminic acid, 0.02-0.05 parts of histidine, 0.2-0.3 parts of ectoine and 3.2-9.3 parts of emollient.

[0011] Preferably, the facial mask liquid comprises the following components in parts by weight: 0.15 parts of N-acetylneuraminic acid, 0.05 parts of histidine, 0.3 parts of ectoine and 3.2 parts of emollient.

[0012] Through experimental research, it was found that when the components of the present invention are combined using the optimal dosage ratio specified above, the resulting facial mask has the best nourishing and skin-lightening effect and the highest cost-effectiveness.

[0013] Preferably, the emollient comprises the following components in parts by weight: 0.1-3 parts of caprylic / capric triglyceride, 0.1-0.5 parts of tocopheryl acetate, 0.1-3 parts of rice bran oil and 0.1-3 parts of wheat germ oil.

[0014] The present invention uses the above four components as emollients, which can better promote the absorption of active ingredients, and can slow down the evaporation of water, help maintain the moisture balance of the skin, and thus significantly improve the nourishing and skin care effect of the mask. Wherein, caprylic acid / capric acid triglyceride has good moisturizing effect, can effectively moisturize the skin, make the skin smooth and soft, and contribute to the dissolution and penetration of other active ingredients, and improve the overall effect of the mask; tocopherol acetate, as a vitamin E derivative, has a good antioxidant effect, and enhances the skin barrier function, thereby slowing down the skin aging process, and keeping the skin moist and comfortable; rice bran oil and wheat germ oil, as oil components, can deeply nourish the skin, improve the problems of dry skin and roughness, and can stimulate the microcirculation of the skin, and help the skin absorb more active ingredients. When the four components are compounded and used in the above preferred ratio, they can better lock the skin moisture, synergistically improve the skin's moisturizing ability, and strengthen the antioxidant protection of the mask, slow down the skin aging problem, and achieve a long-term nourishing and moisturizing effect.

[0015] Preferably, the emollient comprises the following components in parts by weight: 1-3 parts of caprylic / capric triglyceride, 0.2-0.3 parts of tocopherol acetate, 1-3 parts of rice bran oil and 1-3 parts of wheat germ oil.

[0016] More preferably, the emollient comprises the following components in parts by weight: 1 part of caprylic / capric triglyceride, 0.2 parts of tocopheryl acetate, 1 part of rice bran oil and 1 part of wheat germ oil.

[0017] Preferably, the facial mask liquid further comprises the following components in parts by weight: 0.1-2 parts of niacinamide, 4-15 parts of moisturizer, 0.1-0.5 parts of thickener, 0.4-1.5 parts of emulsifier, 0.05-0.3 parts of solubilizer, 0.01-0.05 parts of chelating agent, 0.1-0.3 parts of fragrance and 1-1.5 parts of preservative.

[0018] Preferably, the moisturizer includes at least one of glycerin, glyceryl polyether-26, betaine, allantoin, histidine and butylene glycol; the thickener includes at least one of polyacrylate crosspolymer-6, xanthan gum and hydroxyethyl cellulose; the emulsifier includes glyceryl stearate / PEG-100 stearate and / or tri(laureth-4) phosphate.

[0019] Preferably, the chelating agent comprises disodium EDTA; the solubilizing agent comprises PEG-40 hydrogenated castor oil; and the preservative comprises p-hydroxyacetophenone and / or 1,2-hexanediol.

[0020] In a second aspect, the present invention provides a method for preparing the facial mask, comprising the following steps:

[0021] S1. Add moisturizer, thickener, chelating agent and niacinamide into an emulsifying pot in sequence, stir to dissolve, heat to 80-85°C, keep warm and stir for 10-15 minutes to obtain phase A;

[0022] S2. Add emulsifier and emollient into the oil phase pot, heat to 80-85°C, stir evenly to obtain phase B;

[0023] S3. Add phase B into the emulsifying pot, homogenize until emulsified, keep warm and stir for 10-15 minutes, and cool down to 55-60℃;

[0024] S4. Mix the preservative and moisturizer, heat to 55-60°C until completely dissolved to obtain phase C, add phase C to the emulsifier, stir evenly, and cool to 40-45°C;

[0025] S5, mixing and dissolving N-acetylneuraminic acid, histidine, and ectoine with water to obtain phase D, adding phase D to an emulsifying pot, and stirring evenly;

[0026] S6. Mix and dissolve the solubilizer and the fragrance to obtain phase E, add phase E into an emulsifying pot, stir evenly, cool to 38-40° C. to obtain a facial mask liquid, and immerse a facial mask cloth in the facial mask liquid to obtain the facial mask.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The present invention prepares a facial mask with mild nourishing effect by compounding three active ingredients, namely, N-acetylneuraminic acid, histidine, and ectoine, with an emollient. The components cooperate with each other and influence each other, which can significantly enhance the nourishing and repairing effect of the facial mask, improve skin smoothness and overall glossiness, and is suitable for various skin types, especially sensitive and dry skin. In addition, there is an obvious synergistic effect between the three active ingredients, namely, ectoine, histidine, and N-acetylneuraminic acid, to achieve multi-channel and excellent nourishing and moisturizing effects of the facial mask, and meet consumers' skin care demands for overall comprehensive improvement of dry and rough skin.

[0029] (2) The present invention uses caprylic / capric triglyceride, tocopherol acetate, rice bran oil and wheat germ oil as emollients to better promote the absorption of active ingredients, slow down water evaporation, and help maintain the moisture balance of the skin, thereby significantly improving the nourishing and skin care effect of the mask. Among them, rice bran oil and wheat germ oil, as oil components, can deeply nourish the skin, improve dry and rough skin problems, and stimulate the skin's microcirculation to improve nutrient absorption efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1This is a diagram of the irritation of the facial mask liquid (10% test concentration) prepared in Example 1 using a chicken embryo experiment, wherein: Figure 1 A is a picture of the chicken embryo chorioallantoic membrane before the sample was tested. Figure 1 B is a picture of the chicken embryo chorioallantoic membrane 5 minutes after the sample was tested. DETAILED DESCRIPTION

[0031] To better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments. It should be understood by those skilled in the art that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Unless otherwise specified, all raw materials involved in the following examples and comparative examples are commercially available general materials.

[0033] Examples 1-7

[0034] Embodiments 1-7 of the present invention provide a facial mask with mild nourishing effect, and the specific formula is shown in Table 1. The preparation method of the facial mask with mild nourishing effect comprises the following steps:

[0035] S1. Add moisturizer, thickener, chelating agent and niacinamide into an emulsifying pot in sequence, stir to dissolve, heat to 80-85°C, keep warm and stir for 10-15 minutes to obtain phase A;

[0036] S2. Add emulsifier and emollient into the oil phase pot, heat to 80-85°C, stir evenly to obtain phase B;

[0037] S3. Add phase B into the emulsifying pot, homogenize until emulsified, keep warm and stir for 10-15 minutes, and cool down to 55-60℃;

[0038] S4. Mix the preservative and moisturizer, heat to 55-60°C until completely dissolved to obtain phase C, add phase C to the emulsifier, stir evenly, and cool to 40-45°C;

[0039] S5, mixing and dissolving N-acetylneuraminic acid, histidine, and ectoine with water to obtain phase D, adding phase D to an emulsifying pot, and stirring evenly;

[0040] S6. Mix and dissolve the solubilizer and the fragrance to obtain phase E, add phase E into an emulsifying pot, stir evenly, cool to 38-40° C. to obtain a facial mask liquid, and immerse a facial mask cloth in the facial mask liquid to obtain the facial mask.

[0041] Table 1: Formula of the facial mask liquid with mild nourishing effect described in Examples 1-7 (parts by weight)

[0042]

[0043]

[0044] Comparative Examples 1-12

[0045] The present invention also provides the formula of the facial mask with mild nourishing effect of comparative examples 1-12, as shown in Table 2. The preparation method of the facial mask with mild nourishing effect provided by comparative examples 1-12 is similar to that of embodiment 1-7, except that the formula is different.

[0046] Table 2: Formula of the facial mask liquid with mild nourishing effect described in Comparative Examples 1-12 (parts by weight)

[0047]

[0048]

[0049] Effect example

[0050] 1. Safety test:

[0051] The facial mask liquids prepared in Examples 1-7 and Comparative Examples 1-12 were used as samples to test their safety, and the specific method is as follows.

[0052] Number of testers: 37 people, 12 males, 25 females, aged 20-55 years old. The volunteers met the selection criteria for subjects in human skin patch tests in the "Technical Specifications for Safety of Cosmetics" (2015 edition).

[0053] Test method: The facial mask liquids prepared in Examples 1-7 and Comparative Examples 1-12 were subjected to patch tests. Qualified patch test equipment was selected and a closed patch test method was used. About 0.020-0.025 ml of the test substance was placed in the patch tester. Medical tape was applied to the curved side of the subject's forearm. The palm of the hand was used to gently press the test substance to evenly adhere to the skin. The test substance patch tester was removed after 24 hours. The skin reaction was observed at 0.5, 24, and 48 hours after the removal of the test substance patch tester, and the results were recorded according to the skin reaction grading standards in the "Technical Specification for Safety of Cosmetics" (2015 edition).

[0054] The results of the human skin patch test showed that there was no positive reaction among 37 people. According to the "Technical Specifications for Safety of Cosmetics" (2015 edition), the test substance will not cause adverse skin reactions and the sample is safe and non-irritating.

[0055] Figure 1(AB) is a graph showing the irritation of the facial mask liquid (10% test concentration) prepared in Example 1 using a conventional chicken embryo experiment. The results show that at a test concentration of 10%, there is no significant change in the chicken embryo chorioallantoic membrane 5 minutes after the test compared to before the test, and there is no bleeding in the blood vessels or capillaries, which also proves that the facial mask liquid prepared in the example of the present invention is mild and non-irritating, and has better safety.

[0056] 2. Human testing:

[0057] 190 volunteers with normal skin (14 males, 176 females, aged 20-50 years old) were selected and divided into 19 groups, 10 people in each group, and the masks of Examples 1-7 and Comparative Examples 1-12 were tried respectively to test the improvement of skin gloss, skin elasticity and skin roughness. After cleansing their faces at night, the volunteers tried the masks of Examples 1-7 and Comparative Examples 1-12 according to the groups, 3 times a week, 15 minutes each time, and used them continuously for 14 days. On the 14th night, the products were tried and the face was tested after cleansing.

[0058] (1) Changes in ITA° values

[0059] Whitening is the appearance of whiteness after skin color correction. The principle of whitening analysis is to use the L*a*b color system method, where L represents brightness, the change from black to white, a represents the change from green to red, and b represents the change from blue to yellow. The individual type angle (ITA°) measures the skin L*a*b* color space data through a skin colorimeter or reflectance spectrophotometer to characterize the parameters of facial skin color.

[0060] The skin detector Canfield VISIA 7 was used to collect the face of the subjects before and after using the mask, and the skin image analysis software PIMIA was used to analyze it to obtain the ITA° test value and calculate the ITA° value improvement rate. ITA° value improvement rate = (test value - initial value) / initial value, the test results are taken as the average value of each group, and the specific results are shown in Table 3.

[0061] (2) Changes in skin elasticity

[0062] The multi-probe skin tester was used to test the face of the subjects before and after using the mask. Based on the suction and stretching principle, a constant negative pressure was applied to the skin in the vertical direction, and then the negative pressure was eliminated. The displacement change of the skin within a specified time period was measured. The larger the value, the higher the skin elasticity. The skin elasticity improvement rate was calculated, and the skin elasticity improvement rate = (test value - initial value) / initial value. The test results were taken as the average value of each group. The specific results are shown in Table 3.

[0063] (3) Changes in skin roughness

[0064] The skin detector Canfield VISIA 7 was used to collect the face of the subjects before and after using the mask, and the skin image analysis software PIMIA was used for analysis. Skin roughness is an important indicator that objectively reflects the skin condition and aging degree. Skin roughness intuitively shows the fineness and texture changes of the skin on the human body surface. The statistical changes in the number of characteristic mutation points per unit area of ​​the skin surface reflect the care of a person's skin, indirectly indicate the skin moisture retention status, and can track the progress of cosmetic skin care efficacy treatment. Roughness variance, statistical texture and texture dispersion parameters characterize the statistical results of characteristic mutation points per unit area and quantify the roughness of facial skin. Skin roughness reduction rate = (initial value - test value) / initial value. The test results take the average value of each group. The specific results are shown in Table 3.

[0065] Table 3

[0066]

[0067] It can be seen from the results in Table 3 that the facial masks prepared in Examples 1-7 have excellent nourishing and repairing effects, can effectively improve skin elasticity and roughness, keep the skin moisturized and comfortable while achieving the effect of brightening the skin tone, especially the facial mask described in Example 1 has the best mild nourishing effect. However, when any one or two of the three active ingredients of histidine, ectoine and N-acetylneuraminic acid are lacking in Comparative Examples 1-5, the nourishing effect of the prepared facial masks is significantly reduced compared with the embodiments, and when the dosage ratio of the three active ingredients described in Comparative Examples 11-12 exceeds the specified range of the present invention, the nourishing effect of the facial masks is also reduced, and the problem of dry and rough skin cannot be effectively improved. The above results show that the above three components can better play a synergistic role within the preferred range of the present invention, thereby significantly enhancing the nourishing and skin-lightening effect of the facial mask, and none of the three is dispensable; Comparative Examples 6-9 lack caprylic / capric triglyceride and tocopherol in the emollient respectively. When any one or two of the components of acetate, rice bran oil and wheat germ oil are present, the nourishing effect of the prepared facial mask also decreases, especially when the two oil components of rice bran oil and wheat germ oil are lacking, the effect decreases most significantly. In Comparative Example 10, when rice bran oil, wheat germ oil, histidine and tetrahydromethylpyrimidine carboxylic acid active ingredients are lacking, the nourishing and repairing effect of the facial mask also decreases significantly, indicating that when the specific active ingredients of the present invention are combined with the emollient, the components cooperate with each other, so that the prepared facial mask can deeply nourish the skin, improve skin dryness, roughness and other problems, significantly improve nutrient absorption efficiency, and meet consumers' skin care demands for overall comprehensive improvement of skin dryness, roughness and other conditions.

[0068] 3. Stability test:

[0069] The facial mask liquids prepared in Examples 1-5 were used as samples to test their stability, and the specific method is as follows.

[0070] The internal control standard (high temperature 45±2℃ test for 2 months, low temperature -18±2℃ test for 2 months) is higher than the national standard and light industry standard; high and low temperature cycle test 3 times: 24 hours at high temperature 45±1℃ and low temperature -15±2℃ for one cycle. The results are shown in Table 4.

[0071] Table 4

[0072]

[0073] The results in Table 4 show that the facial mask liquid prepared in the embodiment of the present invention has good stability in product application.

[0074] Finally, it should be noted that the above embodiments are intended to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A facial mask with mild nourishing effect, comprising a facial mask liquid and a facial mask cloth, characterized in that: The facial mask liquid comprises the following components in parts by weight: 0.05-0.3 parts of N-acetylneuraminic acid, 0.01-0.05 parts of histidine, 0.1-0.5 parts of ectoine and 0.4-9.5 parts of emollient.

2. The facial mask according to claim 1, characterized in that The facial mask liquid comprises the following components in parts by weight: 0.05-0.2 parts of N-acetylneuraminic acid, 0.02-0.05 parts of histidine, 0.2-0.3 parts of ectoine and 3.2-9.3 parts of emollient.

3. The facial mask according to claim 2, characterized in that, The facial mask liquid comprises the following components in parts by weight: 0.15 parts of N-acetylneuraminic acid, 0.05 parts of histidine, 0.3 parts of ectoine and 3.2 parts of emollient.

4. The facial mask according to any one of claims 1 to 3, characterized in that: The emollient comprises the following components in parts by weight: 0.1-3 parts of caprylic / capric triglyceride, 0.1-0.5 parts of tocopherol acetate, 0.1-3 parts of rice bran oil and 0.1-3 parts of wheat germ oil.

5. The facial mask as claimed in claim 4, wherein the emollient comprises the following components in parts by weight: 1-3 parts of caprylic / capric triglyceride, 0.2-0.3 parts of tocopherol acetate, 1-3 parts of rice bran oil and 1-3 parts of wheat germ oil.

6. The facial mask according to any one of claims 1 to 3, characterized in that: The facial mask liquid also includes the following components in parts by weight: 0.1-2 parts of niacinamide, 4-15 parts of moisturizer, 0.1-0.5 parts of thickener, 0.4-1.5 parts of emulsifier, 0.05-0.3 parts of solubilizer, 0.01-0.05 parts of chelating agent, 0.1-0.3 parts of fragrance and 1-1.5 parts of preservative.

7. The facial mask according to claim 6, characterized in that The moisturizer includes at least one of glycerin, glyceryl polyether-26, betaine, allantoin, histidine and butylene glycol; the thickener includes at least one of polyacrylate cross-linked polymer-6, xanthan gum and hydroxyethyl cellulose; the emulsifier includes glyceryl stearate / PEG-100 stearate and / or tri(laureth-4) phosphate.

8. The facial mask according to claim 6, wherein The chelating agent includes disodium EDTA; the solubilizing agent includes PEG-40 hydrogenated castor oil; and the preservative includes p-hydroxyacetophenone and / or 1,2-hexanediol.

9. The method for preparing a facial mask according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Add moisturizer, thickener, chelating agent and niacinamide into an emulsifying pot in sequence, stir to dissolve, raise the temperature to 80-85°C, keep warm and stir for 10-15 minutes to obtain phase A; S2. Add emulsifier and emollient into the oil phase pot, heat to 80-85°C, stir evenly to obtain phase B; S3. Add phase B into the emulsifying pot, homogenize until emulsified, keep warm and stir for 10-15 minutes, and cool down to 55-60℃; S4. Mix the preservative and moisturizer, heat to 55-60°C until completely dissolved to obtain phase C, add phase C to the emulsifier, stir evenly, and cool to 40-45°C; S5, mixing and dissolving N-acetylneuraminic acid, histidine, and ectoine with water to obtain phase D, adding phase D to an emulsifying pot, and stirring evenly; S6. Mix and dissolve the solubilizer and the fragrance to obtain phase E, add phase E into an emulsifying pot, stir evenly, cool to 38-40° C. to obtain a facial mask liquid, and immerse a facial mask cloth in the facial mask liquid to obtain the facial mask.

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