A mask and a method of preparing the same

Abstract

The application discloses a mask and a preparation method thereof. The mask is composed of a bio-fiber mask paper and a mask emulsion. The mask emulsion comprises a first skin conditioner, an oil phase mixture, water, pearl powder, a second skin conditioner, a fragrance, a plant soothing agent, carbopol 941, a low lipophilic emulsifier, a high lipophilic emulsifier, sodium hyaluronate, palmitoyl pentapeptide-4, isooctyl palmitate 2-EHP and triethanolamine in a specific ratio. The preparation method comprises steps of step-by-step emulsification, cooling thickening, pH adjustment and the like, so as to ensure the stability and efficacy of the mask emulsion. Through scientific proportioning and a special process, the mask realizes the triple effects of moisturizing, whitening and repairing, and improves the use experience of consumers and market competitiveness.

Description

Technical Field

[0001] This invention relates to the field of skincare technology. Specifically, it relates to a facial mask and its preparation method. Background Technology

[0002] While there is a wide variety of existing facial mask products, most focus on a single or a few functions, failing to meet consumers' diverse skincare needs. Furthermore, facial mask products on the market generally suffer from problems such as unreasonable ingredient ratios, insignificant effects, or skin irritation. Therefore, developing a multi-functional, gentle, and highly effective facial mask formula has significant market demand and technological importance. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this invention is to provide a facial mask with moisturizing, whitening, and repairing functions, and its preparation method. The facial mask comprises a bio-cellulose mask sheet and a mask emulsion made of various active ingredients, such as sodium lactate, panthenol, glycerin, almond oil, olive oil, arbutin, and sodium hyaluronate, which can meet skin care needs. The preparation method achieves gentle moisturizing, whitening, and repairing effects on the skin by optimizing the combination of the emulsification system and active ingredients. Test results show that after using this facial mask, transepidermal water loss (TEWL) and erythema index of the skin are significantly reduced, exhibiting good immediate repair and anti-inflammatory effects, and is suitable for use on various skin types.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A facial mask includes a bio-cellulose mask sheet and a mask emulsion, the mask emulsion being made from the following raw materials in parts by weight: 6.2-15 parts by weight of a first skin conditioning agent, 3-15 parts by weight of an oil phase mixture, 60-80 parts by weight of water, 0.1-1 parts by weight of pearl powder, 2.0-8 parts by weight of a second skin conditioning agent, 0.1-1 parts by weight of a soothing agent, 0.5-1 parts by weight of a plant-based soothing agent, 0.1-1 parts by weight of Carbomer 941, 1-5 parts by weight of a low-lipophilic emulsifier, 1-3 parts by weight of a high-lipophilic emulsifier, 0.1-0.5 parts by weight of sodium hyaluronate, 0.1-1 parts by weight of palmitoyl pentapeptide-4, 0.1-1 parts by weight of isooctyl palmitate 2-EHP, and 0.1-1 parts by weight of triethanolamine.

[0006] The above-mentioned facial mask contains the following components and weight parts of the first skin conditioning agent: sodium lactate 0.1-1 part by weight, panthenol 1-3 parts by weight, glycerin 3-5 parts by weight, 1,3-propanediol 2-5 parts by weight, and chitosan 0.1-1 part by weight.

[0007] The composition and weight percentage of the oil phase mixture in the above-mentioned face mask are as follows: 1-5 parts by weight of almond oil, 1-5 parts by weight of olive oil, and 1-5 parts by weight of caprylic / capric triglyceride.

[0008] The above-mentioned face mask contains the following components and weight parts of the second skin conditioning agent: arbutin 1-3 parts by weight, ceramide 0.1-1 parts by weight, angelica extract 0.1-1 parts by weight, bisabolol 0.2-0.5 parts by weight, eucommia seed oil 0.5-2 parts by weight, and vitamin E acetate 0.1-1 parts by weight.

[0009] In the aforementioned face mask, the low lipophilic emulsifier is cetearyl alcohol, and the high lipophilic emulsifier is cetearyl alcohol polyether-6.

[0010] In the preparation of the aforementioned face mask emulsion, arbutin is first dispersed in an oil phase mixture, and then water containing a first skin conditioning agent is added to the oil phase mixture containing arbutin. When adding water containing the first skin conditioning agent to the oil phase mixture containing arbutin, the highly lipophilic emulsifier is added. The low lipophilic emulsifier is added to the face mask emulsion preparation system after the highly lipophilic emulsifier.

[0011] The method for preparing the facial mask involves immersing a bio-cellulose mask sheet in a mask emulsion to prepare the aforementioned facial mask; the method for preparing the mask emulsion is as follows:

[0012] S1. Disperse the first skin conditioning agent in water and stir evenly to obtain the first premixed solution;

[0013] S2. Heat the oil phase mixture and keep it warm, then add the second skin conditioning agent to the oil phase mixture and stir to obtain the second premix;

[0014] S3. Add the first premix, triethanolamine, and highly lipophilic emulsifier to the second premix and stir until a homogeneous emulsion system is formed to obtain the third premix:

[0015] S4. Add a low lipophilic emulsifier to the third premix, then cool the third premix, and add palmitoyl pentapeptide-4, Xinminshu, plant soothing agent, pearl powder and sodium hyaluronate to the third premix in sequence, and stir to obtain the fourth premix.

[0016] S5. Heat the fourth premix to room temperature, then add Carbomer 941 and isooctyl palmitate 2-EHP, stir well, and adjust the pH to obtain the facial mask emulsion.

[0017] In the above preparation method, the components and weight parts of the first skin conditioning agent are as follows: sodium lactate 0.1-1 parts by weight, panthenol 1-3 parts by weight, glycerin 3-5 parts by weight, 1,3-propanediol 2-5 parts by weight, and chitosan 0.1-1 parts by weight; in step S1, sodium lactate, panthenol, glycerin and 1,3-propanediol are first added to water, and then chitosan is added to water; before adding chitosan to water, the pH of the mixture is adjusted to 5-5.5.

[0018] In the above preparation method, the components and weight parts of the oil phase mixture are: 1-5 parts by weight of almond oil, 1-5 parts by weight of olive oil, and 1-5 parts by weight of caprylic / capric triglyceride.

[0019] The second skin conditioning agent contains the following components and weight parts: arbutin 1-3 parts by weight, ceramide 0.1-1 parts by weight, angelica extract 0.1-1 parts by weight, bisabolol 0.2-0.5 parts by weight, eucommia seed oil 0.5-2 parts by weight, and vitamin E acetate 0.1-1 parts by weight;

[0020] In step S2, the heating and holding temperatures of the oil phase mixture are both 40–45°C;

[0021] In step S4, the temperature of the third premixed liquid after cooling is 4–8°C;

[0022] In step S5, the pH is adjusted to 6.5-7.

[0023] In the above preparation method, in step S3, the high lipophilic emulsifier is cetearyl alcohol polyether-6; in step S4, the low lipophilic emulsifier is cetearyl alcohol.

[0024] Highly lipophilic emulsifiers, with their strong lipophilic properties, can effectively encapsulate the components of the oil phase mixture, forming a relatively stable primary emulsion. At this point, the aqueous phase gradually disperses within the oil phase mixture, and the emulsion initially maintains a water-in-oil (W / O) structure, which is beneficial for the protection of arbutin.

[0025] Compared to highly lipophilic emulsifiers, low-lipophilic emulsifiers have stronger hydrophilicity, which helps the aqueous phase disperse better and gradually transition to an oil-in-water (O / W) structure. This stepwise process effectively improves the hydrophilicity and final stability of the emulsion.

[0026] Cetearyl alcohol polyether-6 has an HLB value of 10.7, while cetearyl alcohol has an HLB value of 16.7. By adding a low-HLB emulsifier first, the oil phase mixture is better stabilized in the initial stage, preventing the aqueous phase from infiltrating the oil phase mixture too quickly, thus avoiding premature stratification or inhomogeneity of the emulsion. After adding a high-HLB emulsifier in the second step, the aqueous phase can be more evenly dispersed throughout the emulsion system, resulting in a more homogeneous and stable emulsion structure.

[0027] The functions of each main component are as follows:

[0028] Sodium lactate: As a humectant and pH adjuster, it has good water-retention properties.

[0029] Panthenol: Enhances the moisturizing effect of face masks and repairs damaged skin barriers.

[0030] Almond oil and olive oil: plant oils that provide moisturizing and repairing effects.

[0031] Arbutin: A highly effective whitening ingredient that reduces skin pigmentation.

[0032] Pearl powder: a whitening and antioxidant ingredient that improves skin tone.

[0033] Sodium hyaluronate: a highly effective moisturizer that enhances the moisturizing effect of face masks.

[0034] Ceramides: Moisturizers and skin barrier repair ingredients that enhance skin's defense.

[0035] Glycerin and 1,3-propanediol: as humectants and solvents, they improve the stability of the formulation.

[0036] Eucommia seed oil: It has a combination of anti-inflammatory, antioxidant and moisturizing effects.

[0037] GTCC (Caprylic and Caprylic Triglycerides): Lubricant and solvent, improves user experience.

[0038] Xinminshu: Soothing and anti-allergic ingredients to relieve skin discomfort.

[0039] Plant-based soothing agents: effectively inhibit the production of "inflammatory factors" and protect the skin from external damage.

[0040] Angelica extract: anti-inflammatory and repairing components that promote skin health.

[0041] Carbopol 941: Thickener, enhances the texture of the formula.

[0042] Cetearyl alcohol (1618 alcohol) / Cetearyl alcohol polyether-6 (OL IVEM 800): Emulsifier and stabilizer, improving the emulsion stability of the formulation. Cetearyl alcohol polyether-6 has an HLB value of 10.7, and cetearyl alcohol has an HLB value of 16.7.

[0043] 2-EHP (isooctyl palmitate): Preservative to ensure formulation safety.

[0044] Vitamin E acetate: an antioxidant that extends product shelf life.

[0045] Bisabolol: It typically has anti-inflammatory, wound-healing, and skin-soothing effects.

[0046] Water: as a solvent, it dissolves and disperses other components.

[0047] Triethanolamine: Adjusts pH value and improves formulation stability.

[0048] Palmitoyl pentapeptide-4: A repairing ingredient that improves skin elasticity, thickness, and hydration.

[0049] Chitosan: a moisturizing and antibacterial ingredient.

[0050] The technical solution of the present invention achieves the following beneficial technical effects:

[0051] 1. Arbutin is a water-soluble component, but it is easily decomposed under acidic conditions, while chitosan is generally soluble in acids and difficult to dissolve in neutral or alkaline environments. The method provided in this invention disperses arbutin in an oil-phase mixture and adds triethanolamine, which has a pH-regulating function, during the first emulsification process. Furthermore, a highly lipophilic emulsifier is added first, followed by a less lipophilic emulsifier, which simultaneously increases the pH of the aqueous phase and prevents the aqueous phase from rapidly penetrating the oil-phase mixture, thus improving the stability of arbutin and effectively enhancing its whitening effect.

[0052] 2. This invention employs a secondary emulsification process, adding a thickener during cooling. This process not only improves the stability of the mask but also makes its texture finer, facilitating application and absorption. This process significantly improves the mask's feel on the skin, enhancing the user experience. The innovative combination of moisturizers (such as sodium lactate and panthenol), repairing ingredients (such as angelica extract), and whitening ingredients (arbutin) achieves a unified effect of moisturizing, whitening, and repairing while maintaining gentleness. This comprehensive functional combination gives this formula a significant competitive advantage in the market. Detailed Implementation

[0053] Example 1

[0054] In this embodiment, the following raw materials are used to manufacture the mask emulsion when preparing the mask:

[0055] Sodium lactate 0.1 parts by weight, panthenol 1 part by weight, almond oil 3 parts by weight, olive oil 3 parts by weight, arbutin 1 part by weight, pearl powder 1 part by weight, sodium hyaluronate 0.1 parts by weight, ceramide 0.5 parts by weight, glycerin 3 parts by weight, 1,3-propanediol 2 parts by weight, eucommia seed oil 1 part by weight, GTCC 1 part by weight, Xinminshu 0.1 parts by weight, plant soothing agent 1 part by weight, angelica extract 1 part by weight, bisabolol 0.2 parts by weight, carbomer 941 0.3 parts by weight, cetearyl alcohol 1 part by weight, 2-EHP 1 part by weight, vitamin E acetate 0.1 parts by weight, water 61.6 parts by weight, triethanolamine 0.3 parts by weight, palmitoyl pentapeptide-4 0.5 parts by weight, chitosan 0.1 parts by weight, and OL IVEM 800 (cetearyl alcohol polyether-6) 1 part by weight.

[0056] All of the above raw materials are commercially available cosmetic-grade raw materials. Among them, almond oil was purchased from Ji'an Guoguang Fragrance Factory; olive oil was purchased from Shaanxi Baichuan Biotechnology; eucommia seed oil was purchased from Xi'an Sailis Biotechnology; and angelica extract, a 10:1 extract with artemisinin as its main component, was purchased from Xi'an Meihe Biotechnology.

[0057] After the above raw materials are made into a mask emulsion, the emulsion is soaked in a bio-cellulose mask sheet, and then sealed and packaged as a mask. The mass ratio of the bio-cellulose mask sheet to the mask emulsion during soaking is approximately 2:8.

[0058] The preparation steps for facial mask lotion are as follows:

[0059] 1. Preparation of the first premix: Add water to a clean, stirred container, then slowly add sodium lactate to the water while stirring continuously until the sodium lactate dissolves. Next, add panthenol, glycerol, and 1,3-propanediol and continue stirring until homogeneous. The stirring temperature is 35°C, and the stirring speed is 160 rpm.

[0060] After stirring until homogeneous, adjust the pH to 5.5 using lactic acid, add chitosan to the mixture, and stir at 160 rpm at 35°C until the chitosan dissolves. Once the chitosan is dissolved, the first premix is ​​obtained.

[0061] 2. Preparation of the second premix: In another container, add almond oil, olive oil, and GTCC to obtain the oil phase mixture. Heat the oil phase mixture to 45°C to help the three substances in the oil phase mixture mix thoroughly. Add bisabolol, eucommia seed oil, arbutin, ceramide, angelica extract, and vitamin E acetate to the oil phase mixture. Maintain the stirring temperature at 45°C and the stirring speed at 160 rpm, and continue stirring until homogeneous to obtain the second premix.

[0062] Arbutin is typically water-soluble, but it decomposes easily under acidic conditions. In this embodiment, adding arbutin to the oil phase mixture effectively protects it and improves its stability in the mask.

[0063] 3. Emulsification: Keep the second premix at 45°C, slowly add the first premix, triethanolamine and OL IVEM800 to the second premix, and stir using a high-shear mixer at a speed of 3000 rpm to form a uniform emulsion system, thus obtaining the third premix.

[0064] 4. Secondary emulsification and thickening: Cetearyl alcohol is added to the third premix, and the third premix is ​​cooled to 4°C. Then, while stirring at 60 rpm, palmitoyl pentapeptide-4, acetaminophen, plant-based soothing agent, pearl powder, and sodium hyaluronate are added sequentially. Stirring continues at 60 rpm for 2 hours to promote the dissolution of sodium hyaluronate. After the sodium hyaluronate is dissolved, the fourth premix is ​​obtained.

[0065] 5. Add preservatives and thicken again: Let the fourth premixed liquid naturally warm to room temperature, then add Carbopol 941 and 2-EHP, and stir at 60 rpm until all ingredients are evenly mixed to obtain the mask lotion.

[0066] The pH of the facial mask lotion is tested, and the pH is adjusted to 6.5 using lactic acid or sodium hydroxide. Then, the bio-cellulose facial mask sheet is soaked in the facial mask lotion, sterilized, and packaged to complete the preparation.

[0067] Example 2

[0068] In this embodiment, the following raw materials are used to manufacture the mask emulsion when preparing the mask:

[0069] Sodium lactate 0.5 parts by weight, panthenol 2 parts by weight, almond oil 1 part by weight, olive oil 1 part by weight, arbutin 2 parts by weight, pearl powder 0.5 parts by weight, sodium hyaluronate 0.3 parts by weight, ceramide 0.1 parts by weight, glycerin 4 parts by weight, 1,3-propanediol 3 parts by weight, eucommia seed oil 1 part by weight, GTCC 3 parts by weight, Xinminshu 0.5 parts by weight, plant soothing agent 0.5 parts by weight, angelica extract 0.5 parts by weight, bisabolol 0.5 parts by weight, carbomer 941 0.5 parts by weight, cetearyl alcohol 3 parts by weight, 2-EHP 0.5 parts by weight, vitamin E acetate 0.5 parts by weight, water 70 parts by weight, triethanolamine 0.5 parts by weight, palmitoyl pentapeptide-4 0.1 parts by weight, chitosan 0.5 parts by weight, and OL IVEM 800 (cetearyl alcohol polyether-6) 1 part by weight.

[0070] After the above raw materials are made into a mask emulsion, the emulsion is soaked in a bio-cellulose mask sheet, and then sealed and packaged as a mask. The mass ratio of the bio-cellulose mask sheet to the mask emulsion during soaking is approximately 2:8.

[0071] Prepare according to the following steps:

[0072] 1. Preparation of the first premix: Add water to a clean, stirred container, and slowly add sodium lactate to the water while stirring continuously until the sodium lactate is completely dissolved. The stirring temperature should be set at 30°C and the stirring speed at 120 rpm. After the sodium lactate has dissolved, add panthenol, glycerol, and 1,3-propanediol, and continue stirring until homogeneous.

[0073] After stirring until homogeneous, adjust the pH to 5 using lactic acid. Then, add chitosan to the aqueous phase and stir at 120 rpm at 30°C until the chitosan dissolves. Once the chitosan is dissolved, the first premix is ​​obtained.

[0074] 2. Preparation of the second premix: In another container, add almond oil, olive oil, and GTCC to obtain the oil phase mixture. Heat the oil phase mixture to 40°C to help the three substances mix thoroughly. Add bisabolol, eucommia seed oil, arbutin, ceramide, angelica extract, and vitamin E acetate to the oil phase mixture. Maintain the stirring temperature at 40°C and the stirring speed at 120 rpm until homogeneous to obtain the second premix.

[0075] 3. Emulsification: While maintaining the second premix at 40°C, slowly add the first premix, triethanolamine, and OL IVEM800 to the second premix. At this point, use a high-shear mixer to stir at 2500 rpm until a homogeneous emulsion system is formed, thus obtaining the third premix.

[0076] 4. Secondary emulsification and thickening: Cetearyl alcohol is added to the third premix, and the third premix is ​​cooled to 8°C while stirring at 80 rpm. While stirring, palmitoyl pentapeptide-4, acetaminophen, plant-based soothing agent, pearl powder, and sodium hyaluronate are added sequentially, and stirring continues at 80 rpm for 1.5 hours to promote the dissolution of sodium hyaluronate. Once the sodium hyaluronate has dissolved, the fourth premix is ​​obtained.

[0077] 5. Add preservatives and perform secondary thickening:

[0078] Allow the fourth premix to warm naturally to room temperature (approximately 25°C), then add Carbopol 941 and 2-EHP, and continue stirring at 80 rpm until all ingredients are evenly mixed to obtain the mask lotion.

[0079] The pH of the mask lotion is tested, and the pH is adjusted to 7.0 using lactic acid or sodium hydroxide. Then, the mask lotion is used to soak the bio-cellulose mask sheet, which is then sterilized and packaged to complete the preparation.

[0080] The formulations of the facial mask lotion in Examples 1 and 2 are compared in Table 1.

[0081] Table 1

[0082]

[0083]

[0084] Comparative Example 1

[0085] A facial mask differs from Example 1 in that the order of emulsifier addition is adjusted. In step 3 of preparing the facial mask emulsion, cetearyl alcohol (instead of OL IVEM 800) is added to the second premix; and in step 5, after sodium hyaluronate is dissolved, OL IVEM 800 (instead of cetearyl alcohol) is added to the third premix.

[0086] Comparative Example 2

[0087] A facial mask, differing from Example 1, involves adding all ingredients to water and stirring at 160 rpm for 2 hours at 35°C during the preparation of the mask emulsion. The pH is then adjusted using lactic acid and sodium hydroxide. This comparative example differs from Example 1 in that the mixing order of the ingredients is altered.

[0088] Comparative Example 3

[0089] A facial mask differs from Example 1 in that, in this comparative example, only 6.2 parts by weight of glycerin were added to water when preparing the first premix. In other words, this comparative example uses fewer types of moisturizers compared to Example 1.

[0090] Comparative Example 4

[0091] A face mask, which differs from Example 1 in that, in the preparation of the second premix, 7 parts by weight of almond oil were used instead of the oil phase mixture in this comparative example, while the other conditions remained unchanged; that is, compared with Example 1, the oil phase mixture in this comparative example was changed to a single type of vegetable oil.

[0092] Comparative Example 5

[0093] A facial mask, which differs from Example 1 in that arbutin is not added when preparing the second premix in this comparative example; that is, compared with Example 1, the whitening ingredients in the facial mask emulsion are reduced, and the ratio of moisturizing ingredients to whitening ingredients is changed.

[0094] Face mask effect test

[0095] 1. Whitening effect test

[0096] Experimental methods:

[0097] Volunteers aged 25 to 45 were selected and divided into two experimental groups and five control groups, with 15 participants in each group. One experimental group used the mask described in Example 1 daily for 28 consecutive days, while the other experimental group used the mask prepared in Example 2 daily for the same 28 consecutive days. The five control groups used masks prepared in Comparative Examples 1, 2, 3, 4, and 5, respectively. From seven days before the start of the experiment and throughout the entire experiment, all volunteers did not use any other skincare products. Before the start of the experiment and on days 7, 14, and 28, the L* value (representing skin brightness; a higher value indicates brighter skin) of the volunteers' faces was measured using a skin colorimeter. The measurement results for the same experimental or control group were averaged. The results are shown in Table 2.

[0098] Table 2. Changes in L* value (skin brightness)

[0099]

[0100] Experimental results:

[0101] In Example 1, volunteers showed a 2.3% increase in L* value after 7 days of mask use, a 5.1% increase after 14 days, and an 8.7% increase after 28 days. The increase in L* value in Example 2 was similar to that of Example 1, with a 2.1% increase after 7 days, a 4.6% increase after 14 days, and an 8.0% increase after 28 days. The L* value measurements in both Example 1 and Example 2 were significantly better than those in Comparative Examples 1 and 2. The results of Comparative Example 3 indicated that a reduction in the variety of moisturizing ingredients in the mask lotion would affect the whitening effect of the mask to some extent. The results in Comparative Example 4 showed that replacing the oil phase mixture with a single almond oil slightly reduced the whitening effect of the mask. The mask lotion prepared in Comparative Example 5, lacking arbutin, had a poorer whitening effect. In summary, the masks prepared in Examples 1 and 2 exhibited significant whitening effects.

[0102] 2. Moisturizing effect test

[0103] Experimental methods:

[0104] Volunteers were selected using the same groupings as those in the whitening effect test. The moisturizing effect was tested on each volunteer. During the test, each volunteer applied the mask for 30 minutes, removed it after 30 minutes, and then wiped away any remaining mask lotion with a cotton pad. The moisture content of the stratum corneum on the volunteers' faces was measured before the experiment and 30 minutes (immediately after removing the mask), 2 hours, and 4 hours after the first application. The moisture content of the stratum corneum was compared at these times to evaluate the immediate and lasting moisturizing effects of the mask. The results are shown in Table 3.

[0105] Table 3. Changes in water content of the stratum corneum of facial skin.

[0106]

[0107] Experimental results:

[0108] In Examples 1 and 2, the moisture content of the facial skin stratum corneum increased by 11 wt% and 13.5 wt% respectively 30 minutes after using the mask. After 2 hours, the increases were still 5.8 wt% and 8.2 wt% respectively compared to before the experiment, and after 4 hours, the increases were still 3.9 wt% and 4.1 wt% respectively. In contrast, in Comparative Examples 1 and 2, the skin moisture content decreased more rapidly within the same time period, returning to essentially the same level as before the experiment after 4 hours. This may be because the emulsions in the mask lotions of Comparative Examples 1 and 2 were relatively poorly emulsified, with most of the moisturizing ingredients in the lotion remaining in the aqueous phase, failing to blend well with the oil phase mixture and thus having poor penetration into the stratum corneum, resulting in a poorer sustained moisturizing effect. Comparative Example 3 used fewer types of moisturizers, resulting in a poorer moisturizing effect. The moisturizing effects of the masks prepared in Comparative Examples 4 and 5 were similar to those of Example 1, but overall slightly worse.

[0109] 3. Repair effect test

[0110] Experimental methods:

[0111] Thirty volunteers aged 25 to 45 years with mild skin barrier damage due to sun exposure were randomly divided into three groups: two experimental groups and one control group. Volunteers stopped using any skincare products with repairing effects one week before the test, and relevant indicators were measured as baseline values ​​before using the mask. Ten volunteers with undamaged skin barriers were selected as controls. Volunteers in the experimental groups used the masks described in Examples 1 and 2, respectively, while volunteers in the control and undamaged groups used mask sheets soaked in water (blank control). The masks were used continuously for 7 days, 30 minutes each time. TEWL values ​​and Erythema Index (EI) on the volunteers' noses were measured using a TEWL meter before the start of the experiment and on days 1, 3, and 7 to evaluate the mask's effects on skin barrier repair and anti-inflammation. In addition, on the first day, TEWL values ​​and EI were measured 30 minutes after application (i.e., immediately after removing the mask), 2 hours, and 4 hours after application to evaluate the mask's immediate repair effect. A lower TEWL value indicates better skin barrier function. The Erythema Index (EI) reflects the condition of facial capillaries, directly indicating the degree of inflammation, and is an objective evaluation method. A lower EI value indicates a better effect of the product in repairing the skin and improving skin erythema. Table 4 shows the evaluation results.

[0112] Table 4. Evaluation Results of TEWL and EI

[0113]

[0114] Experimental results:

[0115] In both Example 1 and Example 2 groups, volunteers showed a significant decrease in TEWL and skin erythema index after applying the masks, indicating that the masks in Examples 1 and 2 had ideal immediate repair performance. After 3 days, the TEWL values ​​and skin erythema index in both experimental groups decreased significantly, and by around day 7, they had essentially returned to the levels of the undamaged group. The rate of decrease in TEWL values ​​and skin erythema index in the blank control group was significantly lower than that in Example 1 and Example 2 groups. The results indicate that the masks prepared in Examples 1 and 2 have significant skin repair and anti-inflammatory effects.

[0116] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A mask comprising a bio-fiber mask paper and a mask emulsion, characterized in that, The mask emulsion is prepared from the following raw materials by weight: 6.2-15 parts by weight of the first skin conditioner, 3-15 parts by weight of the oil phase mixture, 60-80 parts by weight of water, 0.1-1 parts by weight of pearl powder, 2.0-8 parts by weight of the second skin conditioner, 0.1-1 parts by weight of ximenisu, 0.5-1 parts by weight of the plant soothing agent, 0.1-1 parts by weight of carbopol 941, 1-5 parts by weight of the low oil affinity emulsifier, 1-3 parts by weight of the high oil affinity emulsifier, 0.1-0.5 parts by weight of sodium hyaluronate, 0.1-1 parts by weight of palmitoyl pentapeptide-4, 0.1-1 parts by weight of isooctyl palmitate 2-EHP, and 0.1-1 parts by weight of triethanolamine; The components and weight parts of the first skin conditioner are: 0.1-1 parts by weight of sodium lactate, 1-3 parts by weight of panthenol, 3-5 parts by weight of glycerol, 2-5 parts by weight of 1,3-propanediol, and 0.1-1 parts by weight of chitosan; The components and weight parts of the oil phase mixture are: 1-5 parts by weight of almond oil, 1-5 parts by weight of olive oil, and 1-5 parts by weight of caprylic capric triglyceride; The components and weight parts of the second skin conditioner are: 1-3 parts by weight of arbutin, 0.1-1 parts by weight of ceramide, 0.1-1 parts by weight of angelica extract, 0.2-0.5 parts by weight of bisabalol, 0.5-2 parts by weight of eucommia seed oil, and 0.1-1 parts by weight of VE acetate.

2. The facial mask of claim 1, wherein, The low oil affinity emulsifier is cetyl stearyl alcohol, and the high oil affinity emulsifier is cetyl stearyl alcohol polyether-6.

3. A method for preparing a facial mask, characterized by, In the preparation of the mask, the bio-fiber mask paper is immersed in the mask emulsion to prepare the mask as claimed in any one of claims 1-2; the preparation method of the mask emulsion is as follows: S1, dispersing the first skin conditioner in water and stirring until uniform to obtain a first premix; S2, heating the oil phase mixture and keeping warm, then adding the second skin conditioner to the oil phase mixture and stirring to obtain a second premix; S3, adding the first premix, triethanolamine, and the high oil affinity emulsifier to the second premix and stirring until a uniform emulsion system is formed to obtain a third premix; S4, adding the low oil affinity emulsifier to the third premix, then cooling the third premix, and sequentially adding palmitoyl pentapeptide-4, ximenisu, the plant soothing agent, pearl powder, and sodium hyaluronate to the third premix and stirring to obtain a fourth premix; S5, warming the fourth premix to room temperature, then adding carbopol 941 and isooctyl palmitate 2-EHP and stirring until uniform, and adjusting the pH to obtain the mask emulsion.

4. The production method according to claim 3, characterized by, The components and weight parts of the first skin conditioner are: 0.1-1 parts by weight of sodium lactate, 1-3 parts by weight of panthenol, 3-5 parts by weight of glycerol, 2-5 parts by weight of 1,3-propanediol, and 0.1-1 parts by weight of chitosan; in step S1, first add sodium lactate, panthenol, glycerol, and 1,3-propanediol to water, then add chitosan to water; before adding chitosan to water, adjust the pH of the mixture to 5-5.

5.

5. The preparation method according to claim 3, characterized in that, The components and weight parts of the oil phase mixture are: 1-5 parts by weight of almond oil, 1-5 parts by weight of olive oil, and 1-5 parts by weight of caprylic capric triglyceride; The second skin conditioning agent comprises arbutin 1-3 parts by weight, ceramide 0.1-1 parts by weight, angelica extract 0.1-1 parts by weight, bisabalol 0.2-0.5 parts by weight, eucommia seed oil 0.5-2 parts by weight, and VE acetate 0.1-1 parts by weight; In step S2, the temperature of the oil phase mixture is 40-45℃ during heating and holding; In step S4, the temperature of the third premixing solution after cooling is 4-8℃; In step S5, the pH is adjusted to 6.5-7.

6. The preparation method according to claim 3, characterized in that, In step S3, the high lipophilic emulsifier is ceteareth-6; in step S4, the low lipophilic emulsifier is cetearyl alcohol.

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