Tearable aerosol mask and preparation method thereof
By using composite film-forming agents and azone pre-coating technology, the problems of easy atomization and unstable adhesion of aerosol masks during spraying are solved, achieving flexible film formation and efficient hydration and moisturizing, meeting the needs of portability and immediacy.
Patent Information
- Application Number
- CN202511725428.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-01-06
AI Technical Summary
Existing aerosol masks struggle to balance the balance between low viscosity and easy atomization during spraying and high viscosity and stable adhesion after covering the skin. Furthermore, the film is prone to breakage after formation, resulting in film fragment residue and skin irritation.
A composite film-forming agent consisting of acetylated pullulan, seaweed polysaccharide, and azone and polyvinylpyrrolidone was used. Through shear force changes, a complementary effect was formed. Combined with azone pre-coating and high-pressure homogenization technology, an azone-polysaccharide inclusion complex was prepared to achieve flexibility and stable adhesion.
Aerosol masks are easy to atomize and adhere stably during spraying. After forming a film, they are flexible and not easy to break. They can be peeled off in one piece, reducing the burden of cleaning and skin irritation, and achieving immediate soothing repair and long-lasting moisturizing.
Smart Images
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Abstract
Description
Technical Field
[0001] This application relates to the field of cosmetic technology, and more specifically, to a peelable aerosol mask and a method for preparing the same. Background Technology
[0002] With the fast pace of modern life and the widespread use of transportation, business trips and leisure travel are becoming increasingly frequent. Especially after long journeys in enclosed spaces like high-speed trains and airplanes, or after prolonged exposure to the sun, skin is susceptible to dryness and UV damage, urgently requiring immediate cooling, soothing, and deep hydration. Traditional sheet masks suffer from bulky individual packaging, inconvenient portability, and cumbersome application, failing to meet consumers' growing demand for convenient skincare products while traveling.
[0003] Aerosol masks work by spraying onto the face to quickly form a hydrogel-like transparent skincare film. After 15-20 minutes of absorption, the moisture gradually evaporates, leaving a peelable film on the face. This provides timely and effective hydration and repair, and due to its portability, immediacy, and high efficiency, it has gradually become an ideal skincare choice for mobile settings.
[0004] Regarding the aforementioned technologies, the inventors discovered that existing aerosol masks typically struggle to balance the low viscosity and easy atomization during spraying with the high viscosity and stable adhesion after covering the skin. In most products, the atomized liquid is difficult to adhere to the skin surface in time during use, easily flowing and dripping from the skin surface, staining clothing. Furthermore, once the film is formed, it is prone to insufficient adhesion, preventing the effective ingredients from remaining on the skin surface for a long time to form a stable working layer, making it difficult to penetrate the stratum corneum and exert their effects.
[0005] In addition, to achieve the effects of being peelable and providing long-lasting hydration, most existing aerosol masks use polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP) as the mainstream film-forming agents. However, due to the high brittleness and poor flexibility of PVA / PVP films, they are prone to breakage during peeling or wiping, leaving film fragments on the skin surface. This not only increases the cleansing burden, but the brittle film layer also exerts a strong mechanical pulling force on the skin when peeled. This is especially true for sensitive skin whose barrier has been damaged after long-term travel. This pulling force can directly irritate the stratum corneum, leading to further damage to the skin barrier. Due to its sensitivity and discomfort, long-term use may also cause facial skin sagging and increase the risk of wrinkles. Summary of the Invention
[0006] In order to improve the film-forming properties of aerosol masks and enhance the penetration efficiency of the active ingredients in aerosol masks, this application provides a peelable aerosol mask and its preparation method.
[0007] In a first aspect, this application provides a peelable aerosol mask, employing the following technical solution: A peelable aerosol mask, the raw materials of which include a moisturizer, a thickener, a composite film-forming agent, an active ingredient and water, wherein the raw materials of the composite film-forming agent include acetylated modified pullulan, seaweed polysaccharide, azone and polyvinylpyrrolidone.
[0008] Acetylated pullulan introduces flexible hydrophobic segments, giving the polysaccharide molecular chains both hydrophilic hydroxyl groups and hydrophobic acetyl groups. This endows pullulan with moderate hydrophobicity, resulting in a loosely coiled structure in aqueous solution. During spraying, the molecular chains unwind under high shear forces, causing a rapid decrease in solution viscosity, meeting atomization requirements. Upon contact with skin, when the shear force decreases, the molecular chains re-entwine and form a dense network through hydrophobic interactions, rapidly increasing viscosity and smoothly transitioning from solution to gel to solid film. This facilitates the formation of a denser and more uniform film layer, achieving a stable, anti-sagging adhesion effect. Furthermore, the introduction of acetyl groups creates hydrophobic cavities and microregions in the polysaccharide chains. These hydrophobic microregions exhibit strong hydrophobic interactions and van der Waals forces with the long alkyl chains of azone, enabling pre-coating of azone in subsequent preparation processes.
[0009] As a linear water-soluble polymer, PVP forms chemical bonds with the hydroxyl groups of acetylated pullulan, creating a complementary shear response effect that varies with shear force, thus ensuring a fine and uniform spray. When PVP is blended with acetylated pullulan, an interpenetrating structure is formed during film formation. When the film is subjected to tearing stress, the rigid PVP can bear the main load, while the flexible acetylated pullulan phase effectively disperses and absorbs stress through the movement, extension, and deformation of its chain segments, preventing the propagation of microcracks. This greatly enhances the flexibility of the film layer, allowing it to be easily peeled off in one piece, reducing the cleaning burden and damage to the skin.
[0010] The use of water-soluble seaweed polysaccharides further accelerates the rapid film formation of the aerosol mask after contact with the skin. In an environment with a skin temperature of 33-35℃, combined with trace amounts of calcium ions in the skin surface, the seaweed polysaccharides can quickly gel upon contact with the skin, causing the cohesion of the aerosol liquid to increase dramatically and the viscosity to jump instantly, thus firmly anchoring it to the skin surface and effectively preventing it from flowing and dripping.
[0011] Azone acts as a penetration bridge, effectively promoting the even spreading of film-forming agents on the skin surface and the transdermal absorption of active ingredients. This allows the active ingredients of the aerosol mask to be fully absorbed within approximately 15-20 minutes of use, thereby achieving efficient and immediate soothing and repair of the skin barrier, rapid hydration, and long-lasting moisturizing.
[0012] By adopting the above technical solution, the composite film-forming agent of this application, combined with the aerosol form, forms a film quickly and evenly. It is a fluid when sprayed and a gel after adhesion. The dispersion characteristics of the aerosol make the raw material ingredients more gentle when in contact with the skin. After film formation, it provides refreshing nourishment to the skin without a heavy or sticky feeling, achieving highly effective skin repair and moisturizing effects. The toughness and adhesion of the film are suitable for tear-off requirements. It is not easy to break when peeled off and can also clean excess substances on the skin surface.
[0013] Optionally, the mass ratio of the acetylated pullulan, seaweed polysaccharide, azone and polyvinylpyrrolidone is (4-5):(0.5-1):(0.8-1.2):(2-3).
[0014] Optionally, the amount of the composite film-forming agent is 8.2-10.5% by weight.
[0015] By adopting the above technical solution, within the limited formulation range of this application, the composite film-forming agent can form an optimal response system, so that azone is released in an orderly manner during use, synergistically enhancing the flexible structure of the film, and effectively balancing the balance between low viscosity and easy atomization during spraying and high viscosity and stable adhesion after covering the skin.
[0016] When the amount of composite film-forming agent is too low, it is difficult to form a complete and continuous film layer quickly. It is also easy to cause insufficient toughness of the film layer, which is easy to break during separation, resulting in film fragments remaining on the skin surface. When the amount is too high, it will lead to difficulty in spraying, excessively thick film layer, and sticky skin feel.
[0017] Optionally, the preparation method of the acetylated modified pullulan includes the following steps: Pullulan polysaccharide was added to 1-butyl-3-methylimidazolium chloride ionic liquid, heated and stirred to dissolve, anhydrous sodium acetate and acetic anhydride were added, and the reaction was continued for 8-12 hours. The reactants were added to anhydrous ethanol, allowed to stand for 4-6 hours, centrifuged to collect the precipitate, washed with water and anhydrous ethanol, dialyzed and dried to obtain the final product.
[0018] Optionally, the mass ratio of pullulan to acetic anhydride is 1:(0.3-0.5).
[0019] Optionally, the active ingredients include psyllium husk extract, centella asiatica extract, and bisabolol.
[0020] By adopting the above technical solutions, plantain seed husk extract has the effects of immediate soothing and cooling, and locking in moisture; centella asiatica extract has the effects of soothing and repairing the skin barrier; and bisabolol has anti-inflammatory and anti-allergic effects, effectively relieving the burning sensation of the skin after sun exposure. The three active ingredients are combined as active substances, and work synergistically with the instant penetration-enhancing system formed by the composite film-forming agent to provide skin exposed to the sun or subjected to long-term dry environments with immediate cooling, short-term effective hydration, and rapid skin barrier repair.
[0021] Furthermore, the inventors discovered that the plantain seed husk extract can synergistically enhance the toughness of the formed aerosol mask by interacting with the composite film-forming agent. This strengthens the balance between the low viscosity and easy atomization during spraying and the high viscosity and stable adhesion after application to the skin. This may be because the branched polysaccharide chains of the plantain seed husk extract can form a semi-interpenetrating network with the linear chain structure of pullulan. Under the high shear force generated during spraying, the branched chains easily untangle, resulting in a decrease in the viscosity of the mixture and a more uniform droplet size. After application to the skin, the branched chains and linear chains quickly entangle, promoting an increase in system viscosity and further preventing the atomized liquid from flowing and dripping on the skin surface.
[0022] Optionally, the thickener includes D-panthenol and xanthan gum.
[0023] Secondly, this application provides a method for preparing a peelable aerosol mask, using the following technical solution: A method for preparing a peelable aerosol facial mask includes the following steps: Weigh all the raw materials according to the raw material ratio, mix the acetylated pullulan polysaccharide and seaweed polysaccharide and add them to water, heat to 60-70℃, stir and mix at 800-1000 rpm to form a blend; Cool the blend to 50-60℃ and add azone dropwise at 3000-5000 rpm. After the addition is complete, continue shearing for 10-15 min to obtain a crude emulsion. The crude emulsion was homogenized to obtain a nano-inclusion complex emulsion, which was then spray-dried to obtain an azone-polysaccharide inclusion complex. The inner material is prepared by mixing the azone-polysaccharide inclusion complex with polyvinylpyrrolidone, humectant, thickener, active ingredient and water. After mixing and stirring evenly, the inner material is obtained by canning, sealing the valve, filling with nitrogen, and covering with a cap.
[0024] By adopting the above technical solution, the lipid-soluble azone was pre-assembled in the preparation process of the composite film-forming agent of this application. Acetylated pullulan, seaweed polysaccharide and azone were prepared into an azone-polysaccharide inclusion complex by high-speed shearing, high-pressure homogenization and spray drying. The huge shear force of high-pressure homogenization continuously broke the azone droplets, so that they were embedded in the hydrophobic microdomains of acetylated pullulan and the chain network formed by seaweed polysaccharide under the action of high shear force, thereby effectively reducing the problem of oil phase precipitation and helping to preserve it for a long time.
[0025] Furthermore, when the aerosol mask is sprayed onto the skin's surface, it undergoes instantaneous cross-linking under the influence of higher skin temperature and calcium ions in the epidermis. Some azone is released as the mask becomes moist, opening the channels in the stratum corneum and promoting the penetration of active ingredients such as the mask's active ingredients. The remaining azone is released slowly as the moisture in the aerosol mask evaporates and dries on the skin's surface, continuously promoting the deep penetration of moisturizing and functional ingredients in the mask. The dual-stage penetration promotion of azone through its immediate and slow release allows the aerosol mask to effectively achieve immediate soothing and repair after sun exposure and long-lasting hydration within approximately 15-20 minutes of use.
[0026] Furthermore, the inventors discovered that the addition of azone helps reduce the tearing force on the skin when peeling off the aerosol mask after use. This is because, as the mask dries, azone penetrates into the underlying stratum corneum. Azone can temporarily increase the fluidity of intercellular cytoplasm by gently softening the stratum corneum, thereby reducing the resistance of the skin barrier and allowing the mask to be separated with less tearing force. As the mask's moisture evaporates, the friction between the mask and the skin increases, and the interference of azone with lipids in the stratum corneum also provides a certain lubricating effect, further reducing the resistance to tearing the mask apart.
[0027] In summary, this application has the following beneficial effects: 1. Because this application uses acetylated modified pullulan as the main film-forming agent and combines it with seaweed polysaccharide and polyvinylpyrrolidone as a composite film-forming agent, on the one hand, it significantly enables the aerosol mask to meet the atomization requirements when sprayed, and can quickly form a film and stably adhere to the skin surface after covering the skin, effectively reducing the occurrence of liquid flow and dripping. On the other hand, it significantly improves the film layer flexibility of the aerosol mask, and can achieve whole-piece separation when peeled off, significantly reducing the cleaning burden and damage to the skin.
[0028] 2. This application pre-assembles lipid-soluble azone during the preparation of the composite film-forming agent. By using high shear force and high pressure homogenization, azone is embedded into the hydrophobic microdomains of acetylated pullulan polysaccharide and the network formed by seaweed polysaccharide, forming an azone-polysaccharide inclusion complex. This effectively reduces the problem of oil phase precipitation and helps with long-term preservation. After covering the skin, azone is released as the film layer becomes moist, opening the channels of the stratum corneum and enabling the transdermal penetration of active ingredients such as mask active ingredients. As the film layer dries, it is further released, continuously promoting the deep penetration of moisturizing and functional ingredients in the mask. The dual-stage penetration promotion of azone, with its immediate and slow release, enables the aerosol mask to effectively achieve immediate soothing and repair after sun exposure and long-lasting moisturizing within about 15-20 minutes of use.
[0029] 3. The composite film-forming agent of this application, combined with the aerosol mask prepared in aerosol form, forms a film quickly and evenly. It is a fluid when sprayed and a gel after adhesion. The dispersion characteristics of the aerosol make the raw materials more gentle when in contact with the skin. After film formation, it provides refreshing nourishment to the skin without a heavy or sticky feeling, achieving highly effective instant skin repair and moisturizing effects. The toughness and adhesion of the film are suitable for tear-off requirements. It is not easy to break when removed and can also clean excess substances on the skin surface. It can effectively meet people's needs for portable, immediate and efficient skin care in mobile environments. Detailed Implementation
[0030] The present application will be further described in detail below with reference to embodiments and comparative examples.
[0031] raw material Unless otherwise specified, the raw materials used in the embodiments and comparative examples in this application are all commercially available cosmetic-grade products, which meet the requirements of the safety technical specifications for cosmetic raw materials, specifically: Pullulan polysaccharide, selected from Jiangsu Caiwei Biotechnology Co., Ltd., with a purity ≥99%; Sodium alginate, selected from Qingdao Mingyue Seaweed Group Co., Ltd.; Azone, selected from Jiangxi Cedar Natural Medicinal Oil Co., Ltd., with a purity of ≥99%; PEG-40 hydrogenated castor oil, sourced from BASF, Germany, CAS: 61788-85-0; Centella asiatica extract, selected from Shaanxi Benhe Biotechnology Co., Ltd., bh-20191121-03; Spirulina extract, selected from Xi'an Tianhe Pharmaceutical Co., Ltd., TH-NHYTR; Bisabolol, selected from Shanxi Lanyuan Biotechnology Co., Ltd., LY20231231002; The extract of plantain seed husk was prepared by the following method: the plantain seed husk was dried, pulverized and passed through a 40-mesh sieve, and then added to deionized water at a material-to-liquid ratio of 1:10. The mixture was extracted at 60°C with stirring for a total of 3 extractions, each extraction lasting 2 hours. The extracts from each extraction were filtered through filter paper and combined. The mixture was then concentrated to 1 / 10 of its original volume in a rotary evaporator at 60°C. Three times the volume of anhydrous ethanol was then added to the concentrate while stirring. After standing for 4 hours, the precipitate was collected by centrifugation, washed three times with 70% ethanol solution, and then freeze-dried.
[0032] Preparation Example 1 of Acetylated Modified Pullulan The preparation method of acetylated modified pullulan includes the following steps: S1: Heat 100g of 1-butyl-3-methylimidazolium chloride to 85℃ and stir at 200rpm to form a transparent liquid 1-butyl-3-methylimidazolium chloride ionic liquid. Add 10g of pullulan polysaccharide and stir for 2.5h to dissolve. Then add 6g of anhydrous sodium acetate and 3g of acetic anhydride and continue the reaction for 8h. S2: The reactants obtained in S1 were added to anhydrous ethanol at a material-to-liquid ratio of 1:10 under stirring at 400 rpm. After stirring for 150 min, the mixture was allowed to stand for 4 h. The precipitate was collected by centrifugation, washed three times with water and anhydrous ethanol, and then dialyzed and dried to obtain the final product.
[0033] Preparation Example 2 The preparation method of acetylated modified pullulan includes the following steps: S1: Heat 100g of 1-butyl-3-methylimidazolium chloride to 85℃ and stir at 200rpm to form a transparent liquid 1-butyl-3-methylimidazolium chloride ionic liquid. Add 10g pullulan polysaccharide and stir for 2.5h to dissolve. Then add 6g of anhydrous sodium acetate and 4g of acetic anhydride and continue the reaction for 9.7h. S2: The reactants obtained in S1 were added to anhydrous ethanol at a material-to-liquid ratio of 1:10 and stirred at 400 rpm. After stirring for 150 min, the mixture was allowed to stand for 5 h. The precipitate was collected by centrifugation, washed three times with water and anhydrous ethanol, and then dialyzed and dried to obtain the final product.
[0034] Preparation Example 3 The preparation method of acetylated modified pullulan includes the following steps: S1: Heat 100g of 1-butyl-3-methylimidazolium chloride to 85℃ and stir at 200rpm to form a transparent liquid 1-butyl-3-methylimidazolium chloride ionic liquid. Add 10g pullulan polysaccharide and stir for 2.5h to dissolve. Then add 6g of anhydrous sodium acetate and 5g of acetic anhydride and continue the reaction for 12h. S2: The reactants obtained in S1 were added to anhydrous ethanol at a material-to-liquid ratio of 1:10 under stirring at 400 rpm. After stirring for 150 min, the mixture was allowed to stand for 6 h. The precipitate was collected by centrifugation, washed three times with water and anhydrous ethanol, and then dialyzed and dried to obtain the final product. Example
[0035] Example 1 A peelable aerosol mask, by weight percentage, comprises 3% glycerin, 0.05% sodium hyaluronate, 0.5% niacinamide, 0.5% D-panthenol, 0.3% vitamin E, 1.5% PEG-40 hydrogenated castor oil, 2% caprylic / capric glyceride, 0.1% Centella asiatica extract, 0.1% plantain seed husk extract, 0.1% bisabolol, 0.5% xanthan gum, 0.15% ethylhexylglycerin, 0.15% phenoxyethanol, 0.05% EDTA2Na, 0.05% fragrance, 8.2% composite film-forming agent, 2% spirulina extract, and the balance being water. The composite film-forming agent is acetylated modified pullulan, sodium alginate, azone, and polyvinylpyrrolidone prepared in Preparation Example 1 with a weight ratio of 4:0.5:0.8:2. The preparation method of the above-mentioned peelable aerosol mask includes the following steps: S1: Weigh all raw materials according to the raw material ratio, add water, glycerin, sodium hyaluronate, nicotinamide and D-panthenol in sequence to a sterilized mixing pot, heat to 85℃, stir at 300rpm for 10min to obtain phase A; S2: In another sterilized mixing pot, add VE, PEG-40 hydrogenated castor oil, caprylic acid glyceride, Centella asiatica extract, plantain seed husk extract and bisabolol in sequence, heat to 85℃, stir at 300rpm for 10min to obtain phase B; S3: Add phase B to phase A at a constant temperature of 85℃ and 1000rpm, and homogenize for 10min to obtain a mixed phase; S4: Mix acetylated pullulan polysaccharide and sodium alginate, add water at a ratio of 1:10, heat to 60°C, and stir at 800 rpm to form a blend; The blend was cooled to 50°C and azone was added dropwise to the blend at 3000 rpm. After the addition was complete, high-speed shearing was continued for 15 min to obtain a crude emulsion. The crude emulsion was homogenized under high pressure for 5 min to obtain a nano-inclusion complex emulsion, which was then spray-dried to obtain an azone-polysaccharide inclusion complex. S5: Cool the mixed phase to 70℃, then add xanthan gum, EDTA2Na, nitrogen-ketone-polysaccharide inclusion complex and polyvinylpyrrolidone in sequence. Stir at 1000 rpm for 20 min, then cool to 40℃ and add ethylhexylglycerin, phenoxyethanol, spirulina extract and fragrance. Stir at 800 rpm for 10 min to obtain the inner material. After filling, sealing the valve, filling with nitrogen, and covering with the integrated cap, the product is obtained.
[0036] Example 2 A peelable aerosol mask differs from Example 1 in that the composite film-forming agent is the acetylated modified pullulan polysaccharide, sodium alginate, azone and polyvinylpyrrolidone obtained in Preparation Example 2 with a mass ratio of 4:0.8:1:2.4. The preparation method of the above-mentioned peelable aerosol mask includes the following steps: S1: Weigh all raw materials according to the raw material ratio, add water, glycerin, sodium hyaluronate, nicotinamide and D-panthenol in sequence to a sterilized mixing pot, heat to 90℃, stir at 300rpm for 10min to obtain phase A; S2: In another sterilized mixing pot, add VE, PEG-40 hydrogenated castor oil, caprylic acid glyceride, Centella asiatica extract, plantain seed husk extract and bisabolol in sequence, heat to 90℃, stir at 300rpm for 10min to obtain phase B; S3: Add phase B to phase A at a constant temperature of 90℃ and 1000rpm, and homogenize for 10min to obtain a mixed phase; S4: Mix acetylated pullulan polysaccharide and sodium alginate, add water at a ratio of 1:10, heat to 70°C, and stir at 1000 rpm to form a blend; The blend was cooled to 60°C and azone was added dropwise to the blend at 5000 rpm. After the addition was complete, high-speed shearing was continued for 10 min to obtain a crude emulsion. The crude emulsion was homogenized under high pressure for 5 min to obtain a nano-inclusion complex emulsion, which was then spray-dried to obtain an azone-polysaccharide inclusion complex. S5: Cool the mixed phase to 75℃, then add xanthan gum, EDTA2Na, azone-polysaccharide inclusion complex and polyvinylpyrrolidone in sequence. Stir at 1000 rpm for 20 min, then cool to 40℃ and add ethylhexylglycerin, phenoxyethanol, spirulina extract and fragrance. Stir at 600 rpm for 10 min to obtain the inner material. After filling, sealing the valve, filling with nitrogen, and covering with the integrated cap, the product is obtained.
[0037] Example 3 A peelable aerosol mask, which differs from Example 1 in that the composite film-forming agent is acetylated modified pullulan polysaccharide, sodium alginate, azone and polyvinylpyrrolidone obtained in Preparation Example 3 with a mass ratio of 5:1:1.2:3; The preparation method of the above-mentioned peelable aerosol mask includes the following steps: S1: Weigh all raw materials according to the raw material ratio, add water, glycerin, sodium hyaluronate, nicotinamide and D-panthenol in sequence to a sterilized mixing pot, heat to 90℃, stir at 300rpm for 10min to obtain phase A; S2: In another sterilized mixing pot, add VE, PEG-40 hydrogenated castor oil, caprylic acid glyceride, Centella asiatica extract, plantain seed husk extract and bisabolol in sequence, heat to 85℃, stir at 300rpm for 10min to obtain phase B; S3: Add phase B to phase A at a constant temperature of 90℃ and 1000rpm, and homogenize for 10min to obtain a mixed phase; S4: Mix acetylated pullulan polysaccharide and sodium alginate, add water at a ratio of 1:10, heat to 60°C, and stir at 900 rpm to form a blend; The blend was cooled to 50°C and azone was added dropwise to the blend at 4000 rpm. After the addition was complete, high-speed shearing was continued for 15 min to obtain a crude emulsion. The crude emulsion was homogenized under high pressure for 5 min to obtain a nano-inclusion complex emulsion, which was then spray-dried to obtain an azone-polysaccharide inclusion complex. S5: Cool the mixed phase to 70℃, then add xanthan gum, EDTA2Na, azone-polysaccharide inclusion complex and polyvinylpyrrolidone in sequence. Stir at 1000 rpm for 20 min, then cool to 40℃ and add ethylhexylglycerin, phenoxyethanol, spirulina extract and fragrance. Stir at 500 rpm for 10 min to obtain the inner material. After filling, sealing the valve, filling with nitrogen, and covering with the integrated cap, the product is obtained.
[0038] Example 4 A peelable aerosol mask differs from Example 1 in that the amount of composite film-forming agent in the raw materials is 9.4%, while the other steps are the same as in Example 1.
[0039] Example 5 A peelable aerosol mask differs from Example 1 in that the amount of composite film-forming agent in the raw materials is 10.5%, while the other steps are the same as in Example 1.
[0040] Example 6 A peelable aerosol mask differs from Example 1 in that the amount of composite film-forming agent in the raw materials is 8%, while the other steps are the same as in Example 1.
[0041] Example 7 A peelable aerosol mask differs from Example 1 in that the amount of composite film-forming agent in the raw materials is 11%, while the other steps are the same as in Example 1.
[0042] Example 8 A peelable aerosol mask, differing from Example 1 in that the preparation method of the peelable aerosol mask includes the following steps: S1: Weigh all raw materials according to the raw material ratio, add water, glycerin, sodium hyaluronate, nicotinamide and D-panthenol in sequence to a sterilized mixing pot, heat to 85℃, stir at 300rpm for 10min to obtain phase A; S2: In another sterilized mixing pot, add VE, PEG-40 hydrogenated castor oil, caprylic acid glyceride, Centella asiatica extract, plantain seed husk extract and bisabolol in sequence, heat to 85℃, stir at 300rpm for 10min to obtain phase B; S3: Add phase B to phase A at a constant temperature of 85℃ and 1000rpm, and homogenize for 10min to obtain a mixed phase; S4: Cool the mixed phase to 70°C, then add xanthan gum, EDTA2Na, acetylated pullulan, sodium alginate, azone, and polyvinylpyrrolidone in sequence. Stir at 1000 rpm for 20 min, then cool to 40°C and add ethylhexylglycerin, phenoxyethanol, spirulina extract, and fragrance. Stir at 800 rpm for 10 min to obtain the inner material. After filling, sealing the valve, filling with nitrogen, and covering with the integrated cap, the product is obtained.
[0043] Example 9 A peelable aerosol mask differs from Example 1 in that it does not contain psyllium husk extract, and the psyllium husk extract in the raw materials is replaced with an equal mass of water.
[0044] Comparative Example Comparative Example 1 A peelable aerosol mask differs from Example 1 in that the acetylated pullulan in the raw material composite film-forming agent is replaced with an equal mass of unmodified pullulan, while all other steps are the same as in Example 1.
[0045] Comparative Example 2 A peelable aerosol mask differs from Example 1 in that the acetylated modified pullulan in the raw material compounding film-forming agent is replaced with an equal mass of sodium alginate, while all other steps are the same as in Example 1.
[0046] Comparative Example 3 A peelable aerosol mask differs from Example 1 in that sodium alginate is not added to the raw material composite film-forming agent, while all other steps are the same as in Example 1.
[0047] Comparative Example 4 A peelable aerosol mask differs from Example 8 in that no azone is added to the raw material composite film-forming agent, while all other steps are the same as in Example 8.
[0048] Comparative Example 5 A peelable aerosol mask differs from Example 1 in that polyvinylpyrrolidone is not added to the raw material composite film-forming agent, while all other steps are the same as in Example 1.
[0049] Comparative Example 6 A peelable aerosol mask differs from Example 8 in that the raw material composite film-forming agent is only polyvinylpyrrolidone, while the other steps are the same as in Example 8.
[0050] Performance testing The following performance tests were conducted on the tearable aerosol masks obtained in Examples 1-9 and Comparative Examples 1-6.
[0051] Test Example 1 1. Flowing and dripping test: Using the tearable aerosol masks obtained in Examples 1-9 and Comparative Examples 1-6 respectively, the nozzle was positioned and distanced from the palm of the hand, and the nozzle was pressed with the same force so that all the sprayed atomized liquid was sprayed onto the palm. An empty plate was placed directly under the palm to catch the liquid dripping from the palm. The mass m1 of the empty plate was measured before spraying. After spraying 3 times, the mass m2 of the plate was measured again after 5 minutes. The difference between the two, m2-m1, is the mass of the dripping liquid. Each test was performed 3 times, and the average of the 3 results was recorded as the final result in Table 1. 2. Moisturizing effect test: Under the conditions of 25±1℃ and 50±5% humidity, 45 healthy adult women aged 25-30 years were selected as subjects and randomly divided into 15 groups of 3 people each. After washing the skin on the inner side of their forearms and patting it dry with a tissue, the baseline value of the skin moisture content on the inner side of the forearms of the subjects was measured. Then, the peelable aerosol masks obtained in Examples 1-9 and Comparative Examples 1-6 were sprayed on respectively to ensure that the sprayed dosage was the same. After 15 minutes, the formed film layer was peeled off, and the skin moisture content of the subjects was measured after 1 hour and 2 hours of rest. The skin moisture enhancement rate was calculated to measure the moisturizing effect of the aerosol mask. Enhancement rate = (skin moisture content after use - skin moisture content before use) / skin moisture content before use × 100%. Each group was tested 3 times, and the average of the 3 results was recorded as the final result in Table 1.
[0052] Table 1 Test Example 2 Sensory Detection Fifty-five healthy adult women aged 25-30 were randomly divided into 11 groups of 5 each. Each group used the peelable aerosol masks prepared in Examples 1, 6-9, and 1-6, respectively. The evaluation method was as follows: after cleansing, the test sample was sprayed onto the skin surface and peeled off after 15-20 minutes. The aerosol spraying characteristics (including atomization uniformity and spraying smoothness), film adhesion (including film formation speed and whether it drips or causes inconvenience), tear-off effect (including tear integrity and tear gentleness), and post-use skin feel (including immediate soothing, skin hydration, softness, and no tightness) of the aerosol mask were scored on a 5-point scale, with 5 being the best and 1 being the worst. The mean of the evaluation results for each group was recorded as the final result in Table 2.
[0053] Table 2 Group Spraying Film-forming properties Easy to tear Skin feel after use Example 1 4.8 5 5 5 Example 6 4.8 4.4 4.6 4.8 Example 7 4 4.8 4.2 4 Example 8 4.2 4 4 3.6 Example 9 4.8 4.4 4.2 4.2 Comparative Example 1 3.4 3 2.6 3 Comparative Example 2 3 2.6 2.4 2.6 Comparative Example 3 3.8 3.4 4 3.8 Comparative Example 4 4.6 4.6 3.8 4 Comparative Example 5 4.4 4.2 3.4 3.6 Comparative Example 6 4 2 1.8 2 According to the performance test results of Examples 1-5 in Table 1-2 compared to Comparative Example 6 which only used PVP as a film-forming agent, the tearable aerosol mask of this application has the characteristics of low viscosity and easy atomization during spraying. After the mask comes into contact with and covers the skin, it can quickly form a film and stably cover the skin surface. It has the characteristics of high viscosity and stable adhesion, which significantly improves the problems of staining clothes due to the flow and dripping of atomized liquid droplets or insufficient adhesion after film formation, which prevents the effective ingredients of the mask from penetrating effectively. After use, the aerosol mask of this application can be torn off the skin in one piece. The flexibility of the film layer is significantly improved, which effectively improves the problem of traditional aerosol masks being brittle and easily breaking during tearing or wiping, resulting in film fragments remaining on the skin surface, which increases the cleaning burden or causes strong irritation to the skin. The aerosol mask of this application can meet people's needs for portable, immediate and efficient skin care in mobile environments. In particular, it can quickly moisturize and repair skin that has been exposed to the sun or in a dry environment for a long time, and improve the skin environment.
[0054] According to the performance test results of Example 1, Comparative Examples 1-3 and Comparative Example 5, it can be seen that the acetylated modified pullulan polysaccharide used in this application, as the main film-forming agent, works synergistically with the rapid cross-linking gel response effect of sodium alginate. Sodium alginate can promote the gelation process and promote film formation, achieving a balance between the hydrophilic and hydrophobic properties of the aerosol components. This achieves a balance between the low viscosity and easy atomization of the aerosol during spraying and the high viscosity and stable adhesion after covering the skin. On the one hand, it significantly promotes the film-forming effect of the aerosol after contacting the skin, and can quickly form a film and stably adhere to the skin surface after covering the skin, effectively reducing the occurrence of liquid flow and dripping. On the other hand, the modified pullulan polysaccharide, in synergy with PVPV, significantly improves the film layer flexibility of the aerosol mask, enabling the whole sheet to be separated when peeled off, reducing the cleaning burden and the damage to the skin caused by tearing force.
[0055] In addition, the introduction of acetyl groups creates hydrophobic cavities and microregions for the polysaccharide chains. These hydrophobic microregions have strong hydrophobic interactions and van der Waals forces with the long alkyl chains of azone. In this application, azone-polysaccharide inclusion complex was prepared by high-speed shearing, high-pressure homogenization and spray drying to achieve pre-coating of azone. The azone droplets were continuously broken, so that they could be embedded in the hydrophobic microregions of acetylated pullulan polysaccharide and the chain network formed by seaweed polysaccharide under the action of high shear force.
[0056] As shown in Example 8, where azone is directly mixed with other raw materials, and in Comparative Example 1 where pullulan was not acetylated, it can be seen that this application effectively reduces the problems of droplet flow or poor azone effect caused by droplet atomization imbalance due to oil phase precipitation, while also contributing to long-term preservation. In Comparative Example 4, where no azone was added, the moisturizing and hydrating effects of the aerosol mask were significantly reduced. This demonstrates that azone, acting as a penetration bridge, through a pre-coating preparation process, can effectively promote the even spread and transdermal absorption of the mask's active ingredients on the skin surface after contact. This allows the active ingredients of the aerosol mask to be fully absorbed within approximately 15-20 minutes of use, thereby achieving efficient, immediate soothing and repair of the skin barrier, rapid hydration, and long-lasting moisturizing. Furthermore, the addition of azone improves the mask's tearability, making separation easier and further reducing the skin damage caused by the peelable aerosol mask.
[0057] The performance test results of Examples 1-5 and Examples 6-7 show that, within the limited formulation range of this application, the composite film-forming agent can form an optimal response system, allowing azone to be released in an orderly manner during use. This synergistically enhances the flexible structure of the film and promotes a balance between low viscosity and easy atomization during spraying and high viscosity and stable adhesion after covering the skin. If the amount of composite film-forming agent is too low, it is difficult to quickly form a complete and continuous film layer, leading to the atomized liquid flowing. It also easily causes insufficient film toughness, making it prone to breakage during separation, resulting in film fragments remaining on the skin surface. If the amount is too high, it will lead to difficulty in spraying, an excessively thick film layer, a sticky feel, and reduced effectiveness of the aerosol mask.
[0058] The performance test results of Examples 1 and 9 show that the addition of plantain seed husk extract not only enhances the efficacy of the aerosol mask but also synergizes with the composite film-forming agent to further strengthen the toughness of the formed aerosol mask. This strengthens the balance between the low viscosity and easy atomization during spraying and the high viscosity and stable adhesion after covering the skin. This may be because the branched polysaccharide chains of plantain seed husk extract can form a semi-interpenetrating network with the linear chain structure of pullulan polysaccharide. Under the high shear force generated during spraying, the branched chains easily untangle, resulting in a decrease in the viscosity of the mixture and a more uniform droplet size. After covering the skin, the branched chains and linear chains quickly entangle, promoting an increase in system viscosity, thereby further preventing the atomized liquid from flowing and dripping on the skin surface.
[0059] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A tearable aerosol face mask, characterized in that, The raw materials include moisturizing agent, thickening agent, complex film forming agent, active substance and water, and the raw materials of the complex film forming agent include acetylated modified pullulan, fucoidan, azone and polyvinylpyrrolidone.
2. The tearable aerosol mask of claim 1, wherein, The mass ratio of the acetylated modified pullulan, fucoidan, azone and polyvinylpyrrolidone is (4-5):(0.5-1):(0.8-1.2):(2-3).
3. The tearable aerosol mask of claim 2, wherein, The amount of the complex film forming agent is 8.2-10.5% by mass percentage.
4. The tearable aerosol mask of claim 1, wherein, The preparation method of the acetylated modified pullulan comprises the following steps: The pullulan is added into 1-butyl-3-methylimidazolium chloride ionic liquid, heated and stirred to dissolve, anhydrous sodium acetate and acetic anhydride are added, and the reaction is continued for 8-12 hours, the reaction is added into anhydrous ethanol, and after standing for 4-6 hours, the precipitate is collected by centrifugation, washed with water and anhydrous ethanol, and then dialyzed, dried to obtain the acetylated modified pullulan.
5. The tearable aerosol mask of claim 4, wherein, The mass ratio of the pullulan and acetic anhydride is 1:(0.3-0.5).
6. The tearable aerosol mask of claim 1, wherein, The active substance includes psyllium seed shell extract, centella asiatica extract and bisabalol.
7. The tearable aerosol mask of claim 1, wherein, The thickening agent includes D-panthenol and xanthan gum.
8. The method of making the tearable aerosol mask of any one of claims 1-7, characterized in that, The method comprises the following steps: Various raw materials are weighed according to the raw material ratio, the acetylated modified pullulan and fucoidan are mixed and added into water, heated to 60-70 DEG C, and mixed under the condition of 800-1000 rpm stirring to form a blend; The blend is cooled to 50-60 DEG C, and the azone is added dropwise under the condition of 3000-5000 rpm, and after the dropwise addition is completed, the shearing is continued for 10-15 minutes to obtain a coarse emulsion; The coarse emulsion is homogenized to obtain a nano-inclusion emulsion, and then spray dried to obtain an azone-polyose inclusion complex; The azone-polyose inclusion complex is mixed and stirred with polyvinylpyrrolidone, moisturizing agent, thickening agent, active substance and water to obtain an inner material, and then subjected to canning, valve sealing, nitrogen filling and cover connection to obtain the product.