Facial mask based on layered matching of hyaluronic acids with different molecular weights and preparation method of facial mask

Abstract

The invention discloses a mask based on hyaluronic acid layered matching and a preparation method thereof, the mask at least comprises a skin-friendly layer and a support layer, the support layer is a composite structure formed by chemically bonding middle molecular sodium hyaluronate and macromolecular sodium hyaluronate with fibers; the skin-friendly layer is of a hydrogel structure formed by compounding hydrolyzed sodium hyaluronate and gel; when the mask is in a dry state, substances in the skin-friendly layer are filled among fibers in the supporting layer, and the mask is of a two-layer structure; when the facial mask is in a wet state, substances in the skin-friendly layer swell out of fibers after meeting water and then are located on the two sides of the supporting layer, and a three-layer mechanism is formed. According to the mask prepared by layered matching of hyaluronic acids with different molecular weights, skin absorption and mask cloth physical performance requirements are accurately matched, active ingredients only exist in the skin-friendly layer and are prevented from being in direct contact with air / illumination, and the product efficacy stability is improved.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology, and in particular relates to a facial mask based on the layered combination of hyaluronic acid and its preparation method. Background Technology

[0002] As a commonly used daily skincare product, facial masks need to balance the needs of active ingredient penetration, moisturizing and water retention, and ingredient stability. Currently, most commercially available hyaluronic acid mask sheets use sodium hyaluronate with a single molecular weight, making it difficult to simultaneously meet the skin's surface water retention and deep penetration requirements. The mask sheet material is also prone to deformation and detachment during use, affecting the user experience. Furthermore, adding unstable active ingredients to the essence can easily lead to the deactivation of these active ingredients, and some mask sheet components are non-biodegradable, burdening the environment. Therefore, there is an urgent need to develop a higher-performance, more environmentally friendly hyaluronic acid-loaded mask sheet. Summary of the Invention

[0003] To overcome the problems in the prior art, the present invention provides a facial mask based on the layering of hyaluronic acid of different molecular weights and its preparation method. The facial mask prepared by layering hyaluronic acid of different molecular weights precisely matches the skin's absorption and the physical performance requirements of the mask fabric. The active ingredients exist only in the skin-friendly layer, avoiding direct contact with air / light, thus improving the stability of product efficacy.

[0004] To solve the above-mentioned technical problems, the technical solution proposed by this invention is as follows: This invention provides a face mask based on a layered combination of hyaluronic acid of different molecular weights, comprising at least a skin-friendly layer and a support layer. The support layer is a composite structure formed by the chemical bonding of medium-molecular-weight sodium hyaluronate and high-molecular-weight sodium hyaluronate with fibers. The skin-friendly layer is a hydrogel structure formed by the compounding of hydrolyzed sodium hyaluronate and a gelling agent. When the mask is dry, the substance in the skin-friendly layer fills the spaces between the fibers in the support layer, forming a two-layer structure. When the mask is wet, the substance in the skin-friendly layer swells out of the fibers after encountering water and is located on both sides of the support layer, forming a three-layer structure.

[0005] As an optional implementation, in the face mask provided by the present invention, the skin-friendly layer further includes active substances, and the hydrolyzed sodium hyaluronate, gelling agent and active substances are compounded to form a hydrogel structure.

[0006] As an optional implementation, in the face mask provided by the present invention, when the face mask is in a wet state, the substances in the skin-friendly layer swell out of the fibers after encountering water and are located on both sides of the support layer, and are embedded into the support layer from both sides of the support layer to form an interface layer.

[0007] As an optional implementation, in the face mask provided by the present invention, the mass fraction of medium molecular weight sodium hyaluronate in the support layer is 0.001-2%.

[0008] As an optional implementation, in the face mask provided by the present invention, the mass fraction of the macromolecular sodium hyaluronate in the support layer is 0.001-2%.

[0009] As an optional implementation, in the face mask provided by the present invention, the mass fraction of hydrolyzed sodium hyaluronate in the skin-friendly layer is 0.01-4%.

[0010] As an optional implementation, in the face mask provided by the present invention, the active substance is selected from astaxanthin, proto-vitamin C, or disodium pyrroloquinoline quinone (PQQ).

[0011] As an optional implementation, in the face mask provided by the present invention, the mass fraction of active substances in the skin-friendly layer is 0.5%.

[0012] As an optional implementation, in the face mask provided by the present invention, the mass fraction of the gelling agent in the skin-friendly layer is 1-25%.

[0013] As an optional implementation, in the face mask provided by the present invention, the gelling agent is selected from one or more of modified sodium polyacrylate, xanthan gum, carrageenan, hydroxyethyl cellulose, and sodium alginate.

[0014] As an optional implementation method, in the preparation method provided by the present invention, the post-drying and post-winding processing includes integration, shaping and cutting. After cutting, it is directly packaged and applied to the face after being soaked in deionized water.

[0015] Based on the same technical concept, the present invention also provides a facial mask based on a layered combination of hyaluronic acid with different molecular weights, comprising a skin-friendly layer, a support layer, and a moisturizing layer in sequence. The support layer is a composite structure formed by medium-molecular-weight sodium hyaluronate and high-molecular-weight sodium hyaluronate entering the fiber interior and chemically bonding with the fiber. The skin-friendly layer is a composite structure formed by hydrolyzed sodium hyaluronate and surface fiber chemically bonding. The moisturizing layer is a composite structure formed by high-molecular-weight sodium hyaluronate and fiber surface chemically bonding.

[0016] As an optional implementation, the skin-friendly layer of the mask provided by the present invention further includes active substances.

[0017] As an optional implementation, in the facial mask provided by the present invention, the mass fraction of medium-molecular-weight sodium hyaluronate in the support layer is 0.001-2%, and the mass fraction of macromolecular-weight sodium hyaluronate in the support layer is 0.001-2%; the mass fraction of hydrolyzed sodium hyaluronate in the skin-friendly layer is 0.01-4%; the mass fraction of macromolecular-weight sodium hyaluronate in the moisturizing layer is 0.001-2%; the active substance is selected from astaxanthin, proto-vitamin C, and disodium pyrroloquinoline quinone, and the mass fraction of the active substance in the skin-friendly layer is 0.5%.

[0018] Based on the same technical concept, the present invention also provides a method for preparing the above-mentioned mask based on the layered combination of hyaluronic acid with different molecular weights, comprising the following steps: S1. Medium-molecular-weight sodium hyaluronate and macro-molecular-weight sodium hyaluronate are compounded and added to the spinning solution, and the fibers containing the above components are spun to form fibers, and then the fibers are made into rolls B.

[0019] S2. Add the compound of hydrolyzed sodium hyaluronate and active substances to the spinning solution, and spin to form fiber A containing the above components.

[0020] S3. Add an aqueous solution of macromolecular hyaluronic acid to the spinning solution, and spin to form fiber C containing this component.

[0021] S4. The membrane roll is wound and unwound, and fibers A and C are laid on the upper and lower layers of the roll B. Hydroentangling is then used to reinforce the membrane, resulting in a mask based on the layered combination of hyaluronic acid with different molecular weights.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In this invention, different molecular weight hyaluronic acid is used to create layered masks that precisely match the skin's absorption and the physical properties of the mask fabric. A support layer is prepared by filling a macromolecular hyaluronic acid backbone with medium molecular weight hyaluronic acid. The mask fabric fibers are modified with medium molecular weight hyaluronic acid and macromolecular hyaluronic acid to obtain a high-strength and tough mask fabric matrix, which forms a filling layer as a support. The resulting mask fabric layer is not easily degraded or broken and has excellent stability.

[0023] (2) The hydrolyzed sodium hyaluronate in the skin-friendly layer of the present invention improves the water retention performance of the membrane. On the basis of the support layer, the hydrolyzed sodium hyaluronate has good permeability and can carry active ingredients to quickly penetrate the skin, exert moisturizing, soothing and repairing effects, and solve the problem of difficult absorption of active ingredients.

[0024] (3) This invention also includes an outer moisturizing layer, which utilizes macromolecular hyaluronic acid to form a 3D network support structure, sealing and locking in water, blocking air and reducing the oxidation of active ingredients, thereby enhancing the moisturizing ability and physical stability of the mask. The three-layer structure works in a gradient collaboration, synergistically enhancing the effect. This achieves the preservation of active ingredients, solving the problem of easy deactivation of active ingredients in traditional masks, and improving the stability of product efficacy.

[0025] (4) The mask of the present invention has excellent performance in terms of breathability, moisturizing power, softness and permeability, providing consumers with an efficient skin care experience. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the face mask in Examples 1-5 when it is in a wet state; Figure 2 This is a schematic diagram of the structure of the face mask in Examples 6-9. Detailed Implementation

[0028] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below in conjunction with the specification and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0029] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention.

[0030] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0031] Example 1 The preparation of a double-layered film based on the layered combination of hyaluronic acid of different molecular weights includes the following steps: Formula A: Hydrolyzed sodium hyaluronate (10 kDa) and gelling agent, with the remainder made up to 100% with deionized water.

[0032] Formula B: Macromolecular HA (1500 kDa) + Medium-molecular HA (80 kDa), with the remainder made up to 100% with deionized water.

[0033] Preparation of the mask sheet: (1) Add component B of formula to the spinning solution to form fibers containing large and medium molecular weight transparent acid, and then prepare the filling layer base fabric by hydroentangling process.

[0034] (2) The filler base fabric of Formula A is further treated by coating or impregnation process, the coating thickness and uniformity are controlled, and then dried / low temperature dried and wound up.

[0035] (3) Integrate and shape the processed multi-layer membrane fabric, and cut it according to the mask specifications.

[0036] Example 2 The preparation of a double-layered film based on the layered combination of hyaluronic acid of different molecular weights includes the following steps: Formula A: Hydrolyzed sodium hyaluronate (10 kDa) + active ingredient + gelling agent, with the remainder made up to 100% with deionized water.

[0037] Formula B: Macromolecular HA (1500 kDa) + Medium-molecular HA (80 kDa), with the remainder made up to 100% with deionized water.

[0038] Preparation of the mask sheet: (1) Add component B of formula to the spinning solution to form fibers containing large and medium molecular weight transparent acid, and then prepare the filling layer base fabric by hydroentangling process.

[0039] (2) The filler base fabric of Formula A is further treated by coating or impregnation process, the coating thickness and uniformity are controlled, and then dried / low temperature dried and wound up.

[0040] (3) Integrate and shape the processed multi-layer membrane fabric, and cut it according to the mask specifications.

[0041] The mass fractions of each substance in formulations A and B of Examples 1-5 and the base fabric material are shown in Table 1. When the mask is wet, the substances in the skin-friendly layer swell out of the fibers upon contact with water and are located on both sides of the support layer, forming a three-layer structure. A schematic diagram is shown below. Figure 1 As shown.

[0042] Table 1: Mass fraction of each substance in Examples 1-5

[0043] Example 6 The preparation of a three-layered film based on the layered combination of hyaluronic acid with different molecular weights includes the following steps: Formula E1: Hydrolyzed sodium hyaluronate (10 kDa) and active ingredients, with the remainder made up to 100% with deionized water.

[0044] Formula F: Medium molecular weight sodium hyaluronate + high molecular weight HA (1500 kDa), the remainder is made up to 100% with deionized water.

[0045] Formula G: 1% aqueous solution of macromolecular HA (2000 kDa).

[0046] Preparation of the mask sheet: (1) Add formula E1 to the spinning solution and spin to form fiber A1 containing the ingredient.

[0047] (2) Add component F of formulation to the spinning solution to form fiber B containing the component.

[0048] (3) Add component G of formulation to the spinning solution to form fiber C containing the component.

[0049] (4) Fiber B is made into roll material B through hydroentangling or spinning processes. The membrane roll material is then wound and unwound, with fiber A and fiber C laid on the upper and lower layers of roll material B, and hydroentangling reinforcement is initiated. A structural diagram is shown below. Figure 2 As shown.

[0050] Examples 7-9 The preparation of a three-layered film based on the layered combination of hyaluronic acid with different molecular weights includes the following steps: Formula E2: Hydrolyzed sodium hyaluronate (10 kDa), with the remainder made up to 100% with deionized water.

[0051] Formula F: Medium molecular weight sodium hyaluronate + high molecular weight HA (1500 kDa), the remainder is made up to 100% with deionized water.

[0052] Formula G: Aqueous solution of macromolecular HA (2000 kDa).

[0053] Preparation of the mask sheet: (1) Add formula E2 to the spinning solution and spin to form fiber A2 containing the ingredient.

[0054] (2) Add component F of formulation to the spinning solution to form fiber B containing the component.

[0055] (3) Add component G of formulation to the spinning solution to form fiber C containing the component.

[0056] (4) Through hydroentangling or spinning processes, fiber B is made into roll material B using textile or hydroentangling processes. The membrane roll material is then wound and unwound, with fiber A1 and fiber C laid on the upper and lower layers of roll material B, and hydroentangling is activated for reinforcement. The structural diagram is shown below. Figure 2 As shown.

[0057] The mass fraction of each substance and the base fabric material in Examples 6-9 are shown in Table 2 below.

[0058] Table 2: Mass fraction of each substance in the examples

[0059] Comparative Example 1 uses adhesive base fabric directly.

[0060] The preparation method for Comparative Example 2 is as follows: Prepare an aqueous solution containing 0.1% high molecular weight hyaluronic acid + 0.1% medium molecular weight hyaluronic acid + 0.1% hydrolyzed hyaluronic acid as the mask liquid. Use an adhesive mask sheet, and fill each mask with 25g of mask liquid.

[0061] The preparation method in Comparative Example 3 is as follows: Formula A: 0.5% original vitamin C + 10% glycerin, made up to 100% with deionized water. Formula A is then applied to the filling adhesive base fabric via coating or impregnation, controlling the coating thickness and uniformity. The fabric is then dried / low-temperature dried and rolled up. The treated multi-layer film fabric is then integrated, shaped, and cut according to mask specifications.

[0062] The preparation method of Comparative Example 4 is as follows: 0.5% of the original VC + 10% glycerin, and make up to 100% with deionized water, which is used as the mask liquid. Adhesive mask sheet is used, and each mask is filled with 25g of mask liquid.

[0063] Performance testing (a) Thermal aging test The membranes in the examples and comparative examples were placed in a high-temperature environment (e.g., 40°C, 50°C) for one month, and the changes in the appearance, structure and performance of the membrane were observed to evaluate their resistance to heat aging.

[0064] Test results: After the thermal aging test, the appearance and performance of the membrane fabric remained basically unchanged, and the test was passed.

[0065] (II) Stability testing of active substances Experimental method: The membrane was placed in a high-temperature environment (50℃) and under light for one month. The changes in the appearance and color of the membrane were observed, and the degree of VC yellowing and inactivation was evaluated.

[0066] Test results: After a month of high-temperature testing, the appearance and color of the membrane fabrics in Examples 2 and 6 remained basically unchanged, and the test was passed; the membrane fabric in Comparative Example 3 showed yellowing and failed the test, proving that the modified membrane fabric with multiple layers of hyaluronic acid has a certain improvement in the color change and inactivation problem of unstable active substances such as VC. The results are shown in Table 3 below.

[0067] Table 3: Protective effect of layered hyaluronic acid masks with different molecular weights on vitamin C

[0068] (III) Moisturizing performance test Water retention rate test method: The membrane cloth of Examples 1-9 is soaked with water, and the water-saturated membrane cloth is placed under certain environmental conditions (such as constant temperature and humidity) for a period of time (such as 2 hours), and then weighed again. Water retention rate = (weight of membrane cloth after placement - weight of dry membrane cloth) ÷ (weight of membrane cloth after water absorption - weight of dry membrane cloth) × 100%.

[0069] Test results: Compared with the membrane cloth without sodium hyaluronate modification, the water retention rate increased by 20-30%.

[0070] This invention demonstrates that when the modified membrane fabric comes into contact with water, the polymer on its surface combines with water molecules to form a water-retaining system, reducing the rate of water evaporation, enhancing skin retention, and effectively improving dry skin problems.

[0071] (iv) Skin feel experience Skin feel comparison test method (30 consumers) Testing Procedure: 1. After cleansing, it is recommended to moisturize the skin with toner; 2. Open the packaging, mix the mask with deionized water, unfold it and apply it to the face (remove any protective film if present); 3. Adjust the mask to fully adhere to the face, gently press with your fingers to squeeze out excess air bubbles; 4. Enjoy the 15-20 minute mask treatment, remove the mask, and massage to allow the remaining essence to be absorbed; 5. Compare the sample before and after use, with a 10-15 minute break in between.

[0072] Test method: Recruit more than 30 people to try out Examples 2, 6, and Comparative Example 1. Through self-assessment by the participants, evaluate consumers' acceptance of the product's skin feel and other aspects. Single trial. Test results are shown in Table 4.

[0073] Table 4: Results of Skin Feel Experience Test

[0074] Compared to Comparative Example 1, which uses a mask sheet without sodium hyaluronate modification, and Comparative Example 2, which uses a conventional hyaluronic acid mask liquid, in terms of skin feel, Example 2: 96% of consumers found it smoother, 95% found it more comfortable to wear, 99% found it softer, 94% of consumers recognized its good breathability, 98% of consumers found it less dripping, and 90% of consumers recognized it was less prone to deformation; Example 6: 99% of consumers found it smoother, 96% found it more comfortable to wear, 99% of consumers found it softer, 93% of consumers recognized its good breathability, 99% of consumers found it less dripping, and 95% of consumers recognized it was less prone to deformation.

[0075] (v) Permeability testing of active ingredients (1) Simulate the penetration process of active ingredients on the skin Donor pool: Place the mask sample to be tested (containing active ingredients).

[0076] Receptor pool: filled with receiving fluid (simulating subcutaneous tissue fluid) and kept at a constant temperature (32±1℃).

[0077] 3D skin model: serving as a diffusion medium to separate the donor and recipient pools.

[0078] Regularly sample and detect the concentration of active ingredients in the recipient fluid, and calculate the cumulative permeability per unit area (μg / cm²). 2 ).

[0079] (2) Data processing Cumulative permeability calculation: Qn=Cn×V+∑i=1n-1Ci×ViAQn=ACn×V+∑i=1n-1Ci×Vi QnQn: Cumulative permeability at time point n (μg / cm³) 2 ) CnCn: Concentration of the nth sample (μg / mL) VV: Receptor pool volume (mL) ViVi: Sampling volume (mL) per sample AA: Effective diffusion area (cm²) 2 ) Permeation rate calculation:

[0080] The test results are shown in Table 5.

[0081] Table 5: Results of Permeability Test of Active Ingredients

[0082] The layered structure maintains high permeability (close to a single functional layer) while reducing the loss of active ingredients through oxidation (HPLC analysis shows a 60% reduction in degradation products).

[0083] (vi) Physical performance testing (1) Liquid load test Liquid carrying capacity test: The dry membrane cloth is weighed and then immersed in a certain amount of water. After soaking for a period of time (e.g., 30 minutes), it is taken out, the surface moisture is absorbed with filter paper, and then it is weighed again. The water absorption rate is calculated according to the formula: water absorption rate = (weight of membrane cloth after water absorption - weight of dry membrane cloth) ÷ weight of dry membrane cloth × 100%.

[0084] The test results are shown in Table 6. Compared with Comparative Example 1, the liquid loading capacity of the membrane cloth in Example 2 increased by 64%, and the liquid loading capacity of the membrane cloth in Example 6 increased by 40%.

[0085] Table 6: Results of Liquid Loading Test

[0086] (2) Tensile strength test Under specified conditions, an axial tensile force is applied to the membrane fabric until it breaks. The maximum tensile force and corresponding elongation that the membrane fabric can withstand are measured to evaluate its resistance to tensile deformation and breakage. This test uses the strip method to determine the tensile properties of nonwoven fabrics. The main reference documents are as follows: GB / T 24218.3-2010 Textiles - Nonwovens - Test methods - Part 3: Determination of breaking strength and elongation at break. GB / T 6529-2008 Textiles - Standard atmosphere for conditioning and testing.

[0087] The operation procedure is carried out in accordance with the standard.

[0088] Test results: Compared with the unmodified membrane fabric, the longitudinal tensile strength of the membrane fabric in Example 2 was increased by 16.27% and the transverse tensile strength was increased by 24.15% compared with Comparative Example 1; the longitudinal tensile strength of Example 6 was increased by 3.92% and the transverse tensile strength was increased by 7.55%. The specific results are shown in Table 7 below.

[0089] Table 7: Tensile Strength Test Results

[0090] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. However, it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A mask based on layered combination of hyaluronic acid of different molecular weights, characterized in that, At least comprising a skin-friendly layer and a support layer, the support layer is a composite structure formed by chemical bonding of medium molecular weight sodium hyaluronate and large molecular weight sodium hyaluronate with fibers; the skin-friendly layer is a hydrogel structure formed by compounding of hydrolyzed sodium hyaluronate and a gelling agent; When the mask is in a dry state, the substances in the skin-friendly layer are filled between the fibers in the support layer, forming a two-layer structure; when the mask is in a wet state, the substances in the skin-friendly layer swell out of the fibers and are located on both sides of the support layer, forming a three-layer structure.

2. The mask based on layered hyaluronic acid of different molecular weights according to claim 1, characterized in that, The mass fraction of medium molecular weight sodium hyaluronate in the support layer is 0.001-2%, the mass fraction of large molecular weight sodium hyaluronate in the support layer is 0.001-2%, and the mass fraction of hydrolyzed sodium hyaluronate in the skin-friendly layer is 0.01-4%.

3. The mask based on layered hyaluronic acid of different molecular weight according to claim 1, characterized in that, When the mask is in a wet state, the substances in the skin-friendly layer swell out of the fibers and are located on both sides of the support layer, and form an interface layer embedded in the support layer from both sides of the support layer.

4. The mask based on layered hyaluronic acid of different molecular weight according to claim 1, characterized in that, The skin-friendly layer further comprises an active substance, and the active substance, the hydrolyzed sodium hyaluronate, and the gelling agent form a hydrogel structure after compounding; The active substance is selected from one of astaxanthin, protovitamin C, or pyrroloquinoline quinone disodium salt, and the mass fraction of the active substance in the skin-friendly layer is 0.5%.

5. The mask based on layered hyaluronic acid of different molecular weight according to claim 1, characterized in that, The gelling agent is selected from one or more of modified sodium polyacrylate, xanthan gum, carrageenan, hydroxyethyl cellulose, and sodium alginate, and the mass fraction of the gelling agent in the skin-friendly layer is 1-25%.

6. A method of preparing a mask based on layered combination of different molecular weight hyaluronic acid according to any one of claims 1-5, characterized in that, The method comprises the following steps: S1, compounding medium molecular weight sodium hyaluronate and large molecular weight sodium hyaluronate, adding them to a spinning solution, spinning to form fibers containing the above-mentioned components, and preparing a support layer membrane cloth through a water jet process; S2, compounding hydrolyzed sodium hyaluronate, a gelling agent, and an active substance, and processing the support layer membrane cloth obtained in step S1 through a coating or dipping process, drying, winding, and then processing to obtain a mask based on different molecular weight hyaluronic acid layering. The drying, winding, and processing process comprises integration, molding, and cutting, and the mask is directly packaged after cutting, and is used by being soaked in deionized water and then being attached to the face.

7. A mask based on layered hyaluronic acid of different molecular weights, characterized in that, In sequence, the skin-friendly layer, the support layer, and the moisturizing layer, the support layer is a composite structure formed by chemical bonding of medium molecular weight sodium hyaluronate and large molecular weight sodium hyaluronate into fibers, the skin-friendly layer is a composite structure formed by chemical bonding of hydrolyzed sodium hyaluronate and surface fibers, and the moisturizing layer is a composite structure formed by chemical bonding of large molecular weight sodium hyaluronate and fiber surface.

8. The mask based on layered hyaluronic acid of different molecular weight according to claim 7, characterized in that, The skin-friendly layer further comprises an active substance, and the active substance is selected from astaxanthin, protovitamin C, and pyrroloquinoline quinone disodium salt, and the mass fraction of the active substance in the skin-friendly layer is 0.5%. 9.The mask based on layered hyaluronic acid of different molecular weights according to claim 7, characterized in that, The mass fraction of medium molecular weight sodium hyaluronate in the support layer is 0.001-2%, the mass fraction of large molecular weight sodium hyaluronate in the support layer is 0.001-2%, the mass fraction of hydrolyzed sodium hyaluronate in the skin-friendly layer is 0.01-4%, and the mass fraction of large molecular weight sodium hyaluronate in the moisturizing layer is 0.001-2%.

10. A method of preparing a mask based on layered combination of different molecular weight hyaluronic acid according to any one of claims 7-9, characterized in that, The method comprises the following steps: S1, add the compounded medium molecular weight sodium hyaluronate and large molecular weight sodium hyaluronate to the spinning solution, spin to form fibers containing the above components, and then make the fibers into a roll B; S2, add the compounded hydrolyzed sodium hyaluronate and active substance to the spinning solution, spin to form fiber A containing the above components; S3, add the aqueous solution of large molecular weight sodium hyaluronate to the spinning solution, spin to form fiber C containing the component; S4, the film cloth roll is wound and unwound by the winding and unwinding device, and the fiber A and the fiber C are laid on the upper and lower layers of the roll B, and the water jet reinforcement is opened to obtain a mask based on different molecular weight hyaluronic acid layered collocation.

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