Highly effective sunscreen mousse aerosol and method of making same

Abstract

This invention belongs to the field of daily chemical product technology, specifically relating to a high-efficiency sunscreen mousse aerosol and its preparation method. The high-efficiency sunscreen mousse aerosol provided by this invention comprises the following components and their mass percentages: 10%-18% sunscreen agent combination, 1.5%-3% film-forming agent, 2%-5% moisturizer, 1%-2.5% emulsifier, 0.5%-1.5% dispersing aid, 20%-30% propellant, 0.1%-0.3% preservative, 0.05%-0.1% masking agent, and the balance being water; the film-forming agent includes cyclopentamethoxysiloxane and trimethylsiloxysilicate. This invention offers high sun protection efficiency and uniform dispersion of the sunscreen agent, avoiding the severe "whitening" problem of traditional products. It exhibits excellent adhesion to the skin surface, reducing sunscreen film peeling due to sweating and wiping, achieving long-lasting protection. Furthermore, the formula system is stable, forming a thin and breathable protective film after spraying, providing a refreshing and safe feel on the skin.

Description

Technical Field

[0001] This invention belongs to the field of daily chemical products technology, specifically relating to a high-efficiency sunscreen mousse aerosol and its preparation method. Background Technology

[0002] Sunscreen is the foundation of skincare and key to protecting skin health. Its core purpose is not simply to prevent tanning, but to protect the skin from the multiple damages caused by UVA and UVB rays. UVB easily causes acute damage such as sunburn, redness, and peeling, while the highly penetrating UVA reaches the dermis, damaging collagen and elastin fibers, inducing irreversible photoaging problems such as melanin deposition, age spots, fine lines, and sagging. It can also damage skin cell DNA, increasing the risk of pigmented skin diseases and even skin cancer. Simultaneously, ultraviolet rays damage the skin barrier, leading to dryness, sensitivity, and reduced effectiveness of subsequent skincare products. Therefore, proper sun protection is the most cost-effective and efficient way to delay skin aging, maintain a healthy skin barrier, ensure overall skin condition, and make whitening and anti-aging skincare efforts more effective. As people become more aware of sun protection, sunscreen products have become essential for daily skincare. The mainstream formulations on the market are sunscreen cream, sunscreen spray, and sunscreen lotion. However, each formulation has obvious drawbacks: sunscreen cream has a thick texture, is sticky when applied, and is difficult to apply evenly; traditional sunscreen spray is convenient to use, but the spray particles are uneven, the sunscreen ingredients do not adhere well, and oil-based mists can be irritating to the nose, and the direct dispersion of sunscreen agents can easily cause skin irritation; sunscreen lotion, on the other hand, feels sticky on the skin and is inconvenient to carry.

[0003] Regarding the formulation improvement of sunscreen aerosols and mousse-type sunscreen products, relevant research has been published in the prior art. For example, Chinese patent application CN113350250A discloses a multi-effect sunscreen aerosol with high SPF and PFA values ​​and its preparation method, including a multi-effect sunscreen emulsion and a propellant. The multi-effect sunscreen emulsion includes sunscreen agents, licorice root extract, purslane extract, aloe vera leaf juice, cetyl dimethicone, dipotassium glycyrrhizate, bisabolol, solubilizer, synthetic oil, emulsifier, solvent, emollient, and preservative, wherein the solvent is deionized water. Although it improves the basic sun protection effect by combining chemical and physical sunscreen agents, the titanium dioxide physical sunscreen agent in this sunscreen aerosol is prone to aggregation, resulting in severe whitening of the skin; the product is also prone to stratification under high and low temperature environments, indicating insufficient system stability. Existing mousse-type sunscreen products suffer from poor adhesion to the skin surface and short-lasting sun protection.

[0004] In conclusion, the development of a sunscreen product that combines high sun protection efficacy, excellent adhesion to the skin surface, long-lasting protection, stable formula, and a pleasant application experience has become an urgent need in this field. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a high-efficiency sunscreen mousse aerosol and its preparation method. The product of this invention offers high sun protection efficiency, effectively blocking UVA and UVB rays. The sunscreen agent is evenly dispersed, avoiding the severe "whitening" problem of traditional products. It exhibits excellent adhesion to the skin surface, reducing the loss of the sunscreen film due to sweating and wiping, achieving long-lasting protection. Furthermore, the formula is stable, forming a thin, breathable protective film after spraying, without stickiness, clogging pores, and providing a refreshing and safe feel with a superior application experience.

[0006] The technical solution of this invention is: A high-efficiency sunscreen mousse aerosol comprises the following components and their mass percentages: 10%-18% sunscreen agent combination, 1.5%-3% film-forming agent, 2%-5% moisturizer, 1%-2.5% emulsifier, 0.5%-1.5% dispersing agent, 20%-30% propellant, 0.1%-0.3% preservative, 0.05%-0.1% masking agent, and the balance being water; wherein the film-forming agent comprises cyclopentamethoxysiloxane and trimethylsiloxysilicate.

[0007] Furthermore, the high-efficiency sunscreen mousse aerosol comprises the following components and their mass percentages: 15% sunscreen agent combination, 2.5% film-forming agent, 4% moisturizer, 2% emulsifier, 1.2% dispersant, 28% propellant, 0.25% preservative, 0.1% masking agent, and 46.95% water.

[0008] Furthermore, the sunscreen combination is composed of physical sunscreens and organic sunscreens in a mass ratio of 5-10:5-8; Furthermore, the physical sunscreen agent is one or both of rutile nano titanium dioxide and nano zinc oxide; Furthermore, the physical sunscreen agent is composed of rutile nano-titanium dioxide and nano-zinc oxide in a mass ratio of 1-3:1; This invention uses a combination of physical and organic sunscreens for synergistic effects, which can improve the sun protection factor, effectively block UVA and UVB rays, and enhance the sun protection effect.

[0009] Furthermore, the rutile nano-titanium dioxide has a particle size of 10-40 nm; the nano-zinc oxide has a particle size of 20-60 nm.

[0010] Furthermore, the organic sunscreen agent is selected from two of the following: ethylhexyl methoxycinnamate, octocrylene, and ethylhexyl salicylate.

[0011] Furthermore, the film-forming agent is composed of cyclopentadimethylsiloxane and trimethylsiloxysilicate in a mass ratio of 3-6:1.

[0012] Through extensive creative experiments, this invention has discovered that a film-forming agent composed of cyclopentamethoxysiloxane and trimethylsiloxysilicate in a specific mass ratio can not only make the formed film denser, improve its abrasion and water resistance, and solve the problem of poor adhesion of sunscreen films, but also reduce the hardness of the film layer, avoid whitening and stickiness. Furthermore, it can work synergistically with emulsifiers and dispersants in the system to form a continuous system of "dispersion-emulsification-film formation". After the foam breaks down, it quickly forms a uniform, thin, transparent, and abrasion-resistant sunscreen film, solving the problems of uneven film formation and decreased sun protection efficiency over time in existing mousse aerosols, and enhancing the durability of sun protection.

[0013] Furthermore, the emulsifier is composed of cetyl polydimethylsiloxane, polyglycerol-3 diisostearate and sodium bis(lauramide-glutamine)lysine in a mass ratio of 10-15:4-7:1-2.

[0014] In this invention, the emulsifier composed of cetyl polydimethylsiloxane, polyglycerol-3 diisostearate, and sodium bis(lauramide-glutamine)lysine not only ensures the emulsification and dispersion stability of inorganic / organic sunscreens, avoids powder agglomeration, improves the long-term storage stability of the product, and guarantees the sunscreen effect after long-term storage, but also enhances the compatibility of the components in the system, reduces the surface tension of the foam, makes the foam finer and more uniform, ensures that the propellant and liquid are highly uniform under high pressure in the can, and quickly solidifies after spraying, greatly improving the spreading uniformity of the sunscreen and facilitating the formation of a more uniform sunscreen layer on the skin surface.

[0015] Furthermore, the dispersing aid is composed of polyhydroxystearic acid and acrylate / C10-30 alkanol acrylate crosslinked polymers in a mass ratio of 4-8:1.

[0016] In this invention, the dispersing agent composed of polyhydroxystearic acid and acrylic (ester) / C10-30 alkanol acrylate crosspolymers not only ensures that physical sunscreens and organic sunscreens remain homogeneous in the presence of high-pressure propellants, preventing corrosion or sedimentation and agglomeration on the inner wall of the aerosol metal can, but also works with the emulsification system to improve the sun protection effect. It also keeps the sprayed mousse in a "peak-shaped" stacked form (without collapsing), making it easy for consumers to apply precisely. Furthermore, it quickly breaks down and spreads after contact with the skin and friction, thus achieving the functions of "stable suspension in the can, maintaining the sprayed form, and rapid breaking down of the emulsion upon application".

[0017] Furthermore, the moisturizer is selected from two of glycerin, sodium hyaluronate, and panthenol.

[0018] Furthermore, the propellant is one or both of pharmaceutical-grade dimethyl ether and cosmetic-grade liquefied petroleum gas; Furthermore, the cosmetic-grade liquefied petroleum gas is composed of propane, butane, and isobutane in a mass ratio of 1:1 to 2:1; Furthermore, the preservative is selected from phenoxyethanol and methylparaben.

[0019] Furthermore, the masking agent is a plant essential oil or plant extract.

[0020] The preparation method of the high-efficiency sunscreen mousse aerosol is as follows: S1 Add humectant and preservative to water, stir and heat to 70-75℃, keep warm and stir for 15-20 minutes, then homogenize at 4500-5500r / min for 2-4 minutes to obtain an aqueous phase system; S2 mixes sunscreen agents, film-forming agents, emulsifiers, and dispersing agents, stirs and heats to 70-75℃, keeps warm and stirs for 20-30 minutes to uniformly disperse the components and obtain an oil phase system; S3. Add the oil phase system obtained in step S2 to the aqueous phase system obtained in step S1, stir and emulsify at 70-75℃ for 10-15 min, homogenize 2-3 times, 3-5 min each time, to obtain a uniform emulsion. S4. Cool the emulsion obtained in step S3 to 30-35℃, add the masking agent, stir for 5-10 minutes, adjust the pH of the system to 6.0-7.0, and obtain the muski material; S5. Pour the mousse material obtained in step S4 into an aerosol can, seal it, fill the can with propellant, shake it evenly, and you will get the high-efficiency sunscreen mousse aerosol product.

[0021] Compared with the prior art, the present invention has the following advantages: (1) The present invention has high sun protection efficiency, effectively blocks UVA and UVB rays, and the sunscreen agent is evenly dispersed, avoiding the serious "whitening" problem of traditional products.

[0022] (2) The product of this invention forms a thin and breathable protective film after spraying. It is non-sticky, does not clog pores, and feels refreshing and safe on the skin. At the same time, the addition of moisturizers improves the skin's hydration and improves the "dry and tight" defect of sunscreen products.

[0023] (3) The present invention is easy to use: it adopts an aerosol formulation, which forms a fine mousse-like foam after pressing. It is easy to apply, has good spreadability, can quickly and evenly cover the skin, avoid missing any parts, and is portable and easy to carry, making it suitable for touch-up anytime outdoors.

[0024] (4) The present invention has strong stability: the propellant is made of pharmaceutical grade / cosmetic grade raw materials, and the internal pressure of the system is stable; the film-forming agent can improve the adhesion of the sunscreen to the skin surface, reduce the peeling of the sunscreen film caused by sweating and wiping, and prolong the sun protection time; at the same time, there are no easily decomposed ingredients in the formula, the sunscreen has good stability and is not easy to fail under light.

[0025] (5) The present invention is highly safe: the selected raw materials all meet the cosmetic safety standards, the particle size of the nano sunscreen is controlled within the safe range, there is no risk of allergy, the dispersing agent reduces particle aggregation, further reducing the risk of irritation, and it is suitable for people with sensitive skin. Detailed Implementation

[0026] The present invention will be further described below through specific embodiments, but this is not a limitation of the present invention. Those skilled in the art can make various modifications or improvements based on the basic idea of ​​the present invention, but as long as they do not depart from the basic idea of ​​the present invention, they are all within the scope of the present invention.

[0027] Unless otherwise specified, all raw materials used in this invention are commercially available.

[0028] Example 1: A high-efficiency sunscreen mousse aerosol The high-efficiency sunscreen mousse aerosol comprises the following components and their mass percentages: 10% sunscreen agent combination, 1.5% film-forming agent, 2% moisturizer, 1% emulsifier, 0.5% dispersant, 30% propellant, 0.1% preservative, 0.05% masking agent, and 54.85% water; the sunscreen agent combination is a mixture of physical sunscreen and organic sunscreen in a mass ratio of 5:8; the physical sunscreen is composed of rutile nano-titanium dioxide with a particle size of 10nm and nano-zinc oxide with a particle size of 20nm in a mass ratio of 1:1; the organic sunscreen is composed of ethylhexyl methoxycinnamate and octocrylene in a mass ratio of 3: 2. Composition: The film-forming agent is composed of cyclopentamethoxysiloxane and trimethylsiloxane in a mass ratio of 3:1; the emulsifier is composed of cetyl polydimethylsiloxane, polyglycerol-3 diisostearate, and sodium bis(lauramide-glutamine)lysine in a mass ratio of 10:7:2; the dispersing aid is composed of polyhydroxystearic acid and acrylate / C10-30 alkanol acrylate crosspolymer in a mass ratio of 4:1; the humectant is composed of glycerin and sodium hyaluronate in a mass ratio of 4:1; the propellant is pharmaceutical grade dimethyl ether; the preservative is phenoxyethanol; and the flavor masking agent is plant essential oil.

[0029] The preparation method of the high-efficiency sunscreen mousse aerosol is as follows: S1 Add humectant and preservative to water, stir and heat to 70°C, keep warm and stir for 15 min, then homogenize at 4500 r / min for 2 min to obtain an aqueous phase system; S2 mixes sunscreen agents, film-forming agents, emulsifiers, and dispersing aids, stirs and heats to 75°C, keeps warm and stirs for 20 minutes to ensure uniform dispersion of each component, and obtains an oil phase system; S3. Add the oil phase system obtained in step S2 to the aqueous phase system obtained in step S1, stir and emulsify at 70°C for 10 min, homogenize twice for 5 min each time, and obtain a uniform emulsion. S4. Cool the emulsion obtained in step S3 to 30°C, add the masking agent, stir for 5 minutes, adjust the pH of the system to 6.0, and obtain the muski material. S5. Pour the mousse material obtained in step S4 into an aerosol can, seal it, fill the can with propellant, shake it evenly, and you will get the high-efficiency sunscreen mousse aerosol product.

[0030] Example 2: A high-efficiency sunscreen mousse aerosol The high-efficiency sunscreen mousse aerosol comprises the following components and their mass percentages: 18% sunscreen agent combination, 3% film-forming agent, 5% moisturizer, 2.5% emulsifier, 1.5% dispersant, 20% propellant, 0.3% preservative, 0.1% masking agent, and 49.6% water; the sunscreen agent combination is a mixture of physical sunscreen and organic sunscreen in a mass ratio of 10:5; the physical sunscreen is composed of rutile nano-titanium dioxide with a particle size of 40nm and nano-zinc oxide with a particle size of 60nm in a mass ratio of 3:1; the organic sunscreen is composed of ethylhexyl methoxycinnamate and ethylhexyl salicylate in a mass ratio of 3:2; the film-forming agent is composed of cyclopentamethoxydimethylamine... The composition comprises: siloxane and trimethylsiloxane in a mass ratio of 6:1; emulsifier composed of cetyl polydimethylsiloxane, polyglycerol-3 diisostearate, and sodium bis(lauramide-glutamine)lysine in a mass ratio of 15:4:1; dispersant composed of polyhydroxystearic acid and acrylate / C10-30 alkanol acrylate crosspolymer in a mass ratio of 8:1; humectant composed of glycerin and panthenol in a mass ratio of 3:1; propellant cosmetic-grade liquefied petroleum gas (LPG); LPG composed of propane, butane, and isobutane in a mass ratio of 1:1:1; preservative phenoxyethanol; and flavor masking agent plant essential oil.

[0031] The preparation method of the high-efficiency sunscreen mousse aerosol is as follows: S1 Add humectant and preservative to water, stir and heat to 75°C, keep warm and stir for 20 min, then homogenize at 5500 r / min for 4 min to obtain an aqueous phase system; S2 mixes sunscreen agents, film-forming agents, emulsifiers, and dispersing aids, stirs and heats to 75°C, keeps warm and stirs for 30 minutes to ensure uniform dispersion of each component, thus obtaining an oil phase system; S3. Add the oil phase system obtained in step S2 to the aqueous phase system obtained in step S1, stir and emulsify at 75°C for 15 min, homogenize 3 times for 3 min each time, and obtain a uniform emulsion. S4. Cool the emulsion obtained in step S3 to 35°C, add a masking agent, stir for 10 minutes, adjust the pH of the system to 7.0, and obtain the muski material. S5. Pour the mousse material obtained in step S4 into an aerosol can, seal it, fill the can with propellant, shake it evenly, and you will get the high-efficiency sunscreen mousse aerosol product.

[0032] Example 3: A high-efficiency sunscreen mousse aerosol The high-efficiency sunscreen mousse aerosol comprises the following components and their mass percentages: 12% sunscreen agent combination, 2% film-forming agent, 3% moisturizer, 1.5% emulsifier, 0.8% dispersant, 25% propellant, 0.2% preservative, 0.08% masking agent, and 55.42% water; the sunscreen agent combination is a mixture of physical sunscreen and organic sunscreen in a mass ratio of 7:5; the physical sunscreen is composed of rutile nano-titanium dioxide with a particle size of 20nm and nano-zinc oxide with a particle size of 50nm in a mass ratio of 4:3; the organic sunscreen is composed of ethylhexyl methoxycinnamate and ethylhexyl salicylate in a mass ratio of 3:2; the film-forming agent is composed of cyclopentamethoxydimethyl... The composition comprises siloxane and trimethylsiloxane in a mass ratio of 4:1; the emulsifier comprises cetyl polydimethylsiloxane, polyglycerol-3 diisostearate, and sodium bis(lauramide-glutamine)lysine in a mass ratio of 13:6:2; the dispersing agent comprises polyhydroxystearic acid and acrylate / C10-30 alkanol acrylate crosspolymer in a mass ratio of 5:1; the humectant comprises glycerin and sodium hyaluronate in a mass ratio of 3:1; the propellant is cosmetic-grade liquefied petroleum gas; the cosmetic-grade liquefied petroleum gas comprises propane, butane, and isobutane in a mass ratio of 1:2:1; the preservative is phenoxyethanol; and the masking agent is plant essential oil.

[0033] The preparation method of the high-efficiency sunscreen mousse aerosol is as follows: S1 Add humectant and preservative to water, stir and heat to 72°C, keep warm and stir for 18 min, then homogenize at 5000 r / min for 3 min to obtain an aqueous phase system; S2 mixes sunscreen agents, film-forming agents, emulsifiers, and dispersing agents, stirs and heats to 72°C, keeps warm and stirs for 25 minutes to ensure uniform dispersion of each component, and obtains an oil phase system; S3. Add the oil phase system obtained in step S2 to the aqueous phase system obtained in step S1, stir and emulsify at 72°C for 13 min, homogenize 3 times for 4 min each time, and obtain a uniform emulsion. S4. Cool the emulsion obtained in step S3 to 32°C, add a masking agent, stir for 7 minutes, adjust the pH of the system to 6.5, and obtain the muski material. S5. Pour the mousse material obtained in step S4 into an aerosol can, seal it, fill the can with propellant, shake it evenly, and you will get the high-efficiency sunscreen mousse aerosol product.

[0034] Example 4: A high-efficiency sunscreen mousse aerosol The high-efficiency sunscreen mousse aerosol comprises the following components and their mass percentages: 15% sunscreen agent combination, 2.5% film-forming agent, 4% moisturizer, 2% emulsifier, 1.2% dispersant, 28% propellant, 0.25% preservative, 0.1% masking agent, and 46.95% water; the sunscreen agent combination is a mixture of physical sunscreen and organic sunscreen in a mass ratio of 10:5; the physical sunscreen is composed of rutile nano-titanium dioxide with a particle size of 20nm and nano-zinc oxide with a particle size of 50nm in a mass ratio of 2:1; the organic sunscreen is composed of ethylhexyl methoxycinnamate and ethylhexyl salicylate in a mass ratio of 3:2; the film-forming agent is composed of cyclopentamethoxydimethylamine... The composition comprises: siloxane and trimethylsiloxane in a mass ratio of 5:1; the emulsifier comprises cetyl polydimethylsiloxane, polyglycerol-3 diisostearate, and sodium bis(lauramide-glutamine)lysine in a mass ratio of 12:5:2; the dispersing agent comprises polyhydroxystearic acid and acrylate / C10-30 alkanol acrylate crosspolymer in a mass ratio of 6:1; the humectant comprises glycerin and sodium hyaluronate in a mass ratio of 3:1; the propellant is cosmetic-grade liquefied petroleum gas (LPG); the cosmetic-grade LPG comprises propane, butane, and isobutane in a mass ratio of 1:2:1; the preservative is phenoxyethanol; and the masking agent is plant essential oil.

[0035] The preparation method of the high-efficiency sunscreen mousse aerosol is as follows: S1 Add humectant and preservative to water, stir and heat to 72°C, keep warm and stir for 18 min, then homogenize at 5000 r / min for 3 min to obtain an aqueous phase system; S2 mixes sunscreen agents, film-forming agents, emulsifiers, and dispersing agents, stirs and heats to 72°C, keeps warm and stirs for 25 minutes to ensure uniform dispersion of each component, and obtains an oil phase system; S3. Add the oil phase system obtained in step S2 to the aqueous phase system obtained in step S1, stir and emulsify at 72°C for 13 min, homogenize 3 times for 4 min each time, and obtain a uniform emulsion. S4. Cool the emulsion obtained in step S3 to 32°C, add a masking agent, stir for 7 minutes, adjust the pH of the system to 6.5, and obtain the muski material. S5. Pour the mousse material obtained in step S4 into an aerosol can, seal it, fill the can with propellant, shake it evenly, and you will get the high-efficiency sunscreen mousse aerosol product.

[0036] Comparative Example 1: A sunscreen mousse aerosol The composition of the sunscreen mousse aerosol is similar to that of Example 4, except that the film-forming agent is composed of cyclopentamethoxysiloxane and trimethylsiloxysilicate in a mass ratio of 1:5.

[0037] Comparative Example 2: A sunscreen mousse aerosol The composition of the sunscreen mousse aerosol is similar to that of Example 4. The difference is that the film-forming agent is composed of cyclopentamethoxysiloxane and styrene / acrylate copolymer in a mass ratio of 5:1, that is, trimethylsiloxysilicate in the film-forming agent is replaced with styrene / acrylate copolymer.

[0038] Comparative Example 3: A sunscreen mousse aerosol The composition of the sunscreen mousse aerosol is similar to that of Example 4, except that the emulsifier is composed of cetyl polydimethylsiloxane, polyglycerol-3 diisostearate and sodium di(lauramide-glutamine)lysine in a mass ratio of 2:5:12.

[0039] Comparative Example 4: A sunscreen mousse aerosol The composition of the sunscreen mousse aerosol is similar to that of Example 4. The difference is that the emulsifier is composed of cetyl polydimethylsiloxane, polyglycerol-3 diisostearate and sodium stearoyl glutamate in a mass ratio of 12:5:2. That is, the sodium bis(lauramide-glutamine)lysine in the emulsifier is replaced with sodium stearoyl glutamate.

[0040] Comparative Example 5: A sunscreen mousse aerosol The composition of the sunscreen mousse aerosol is similar to that of Example 4. The difference is that the dispersing agent is composed of glyceryl monostearate and acrylate / C10-30 alkanol acrylate crosspolymer in a mass ratio of 6:1, that is, the polyhydroxystearic acid in the dispersing agent is replaced with glyceryl monostearate.

[0041] Test Example 1: Sunscreen Performance Test 1. Experimental Materials The high-efficiency sunscreen mousse aerosol prepared in Example 4 of this invention, and the sunscreen mousse aerosol prepared in Comparative Examples 3 and 4.

[0042] 2. Experimental Methods The SPF and PFA values ​​of the product were determined according to the relevant methods in Chapter 8, Human Efficacy Evaluation Testing Methods, of the "Cosmetic Safety Technical Specifications" (2015 Edition). When the PFA value is <2, UVA protection effect should not be labeled; when the PFA value is 2-3, it should be labeled PA+; when the PFA value is 4-7, it should be labeled PA++; when the PFA value is 8-15, it should be labeled PA+++; and when the PFA value is ≥16, it should be labeled PA++++. The more "+" signs, the better the UVA protection effect and the longer the effective protection time.

[0043] 3. Experimental Results The results of the sun protection performance test are shown in Table 1.

[0044] Table 1. Sunscreen Performance Test Results

[0045] As shown in Table 1, the high-efficiency sunscreen mousse aerosol prepared in Example 4 of this invention has an SPF value of 62, a PFA value of 19.3, and a PA rating of ++++. In contrast, the sunscreen mousse aerosols prepared in Comparative Examples 3 and 4 have SPF values ​​of 57 and 54, and PFA values ​​of 18.6 and 17.8, respectively. Therefore, the high-efficiency sunscreen mousse aerosol prepared in this invention exhibits superior sun protection capabilities, effectively resisting both UVB (sunburn) and UVA (tanning, photoaging).

[0046] Experimental Example 2: Skin Feel Test 1. Experimental Materials The high-efficiency sunscreen mousse aerosol prepared in Examples 3 and 4 of this invention, and the sunscreen mousse aerosol prepared in Comparative Examples 1 and 2.

[0047] 2. Experimental Methods Follow the guidelines for non-food categories in GB / T 16860-2025 "Sensory Analysis Methods - Texture Profile Inspection".

[0048] 3. Experimental Results The results of the skin feel test are shown in Table 2.

[0049] Table 2 Results of Skin Feel Test

[0050] As shown in Table 2, the high-efficiency sunscreen mousse aerosols prepared in Examples 3 and 4 of this invention have a refreshing and non-sticky feel on the skin. Compared with the products of Comparative Examples 1 and 2, the examples of this invention perform better in terms of skin feel and provide a better user experience. After spraying, the product of this invention forms a thin and breathable protective film, without stickiness, without clogging pores, and with a refreshing and safe feel on the skin.

[0051] Experimental Example 3: Whitening Degree Test 1. Experimental Materials The high-efficiency sunscreen mousse aerosol prepared in Examples 3 and 4 of this invention, and the sunscreen mousse aerosol prepared in Comparative Examples 2 and 5.

[0052] 2. Experimental Methods Spray the product evenly onto your arm from a distance of 10-15cm from the surface to be coated, and observe the state of the product on your arm.

[0053] 3. Experimental Results The results of the whitening test are shown in Table 3.

[0054] Table 3 Results of Whitening Degree Test

[0055] As shown in Table 3, the high-efficiency sunscreen mousse aerosols prepared using Examples 3 and 4 of this invention showed no obvious whitening, indicating that the products prepared using this invention do not leave a white cast and adhere naturally to the skin. However, the products obtained using Comparative Examples 2 and 5 showed severe whitening.

[0056] Test Example 4: Skin Irritation Test 1. Experimental Materials The high-efficiency sunscreen mousse aerosol prepared in Examples 1, 2, 3 and 4 of this invention.

[0057] 2. Experimental Methods The skin irritation / corrosion test shall be performed in accordance with Chapter 6 Toxicology Test Methods of the Cosmetic Safety Technical Specifications (2015 Edition).

[0058] 3. Experimental Results The results of the skin irritation test are shown in Table 4.

[0059] Table 4 Results of Skin Irritation Test

[0060] As shown in Table 4, the high-efficiency sunscreen mousse aerosols prepared in Examples 1, 2, 3, and 4 of this invention are all non-allergenic and non-irritating to the skin. Therefore, the high-efficiency sunscreen mousse aerosol of this invention is gentle and safe, non-irritating and non-allergenic to the skin, and suitable for a wide range of people.

[0061] Experimental Example 5: Stability Test 1. Experimental Materials The high-efficiency sunscreen mousse aerosol prepared in Example 4 of this invention, and the sunscreen mousse aerosol prepared in Comparative Examples 3 and 4.

[0062] 2. Experimental Methods Place the product in a 45℃ oven for 90 days.

[0063] 3. Experimental Results After the experiment, the product's condition was observed, and its SPF and PFA values ​​were measured to test its stability. The stability test results are shown in Table 5.

[0064] Table 5 Stability Test Results

[0065] As shown in Table 5, the high-efficiency sunscreen mousse aerosol prepared in Example 4 of this invention exhibits an SPF value decay rate of only 18% after being stored at 45℃ for 90 days, maintaining stable sun protection performance. The PA rating remains ++++ after 90 days at 45℃, showing no degradation, indicating sustained and stable UVA protection. The product system of this invention remains homogeneous, without stratification or precipitation after 90 days of high-temperature storage, meeting the system stability requirements. In contrast, the sunscreen mousse aerosols prepared in Comparative Examples 3 and 4 show high SPF value decay rates and significant PA rating degradation after 90 days at 45℃. In summary, the high-efficiency sunscreen mousse aerosol of this invention demonstrates excellent thermal stability, maintaining good sun protection effect and product condition even after long-term storage, indicating reliable quality.

[0066] Test Example 6: Abrasion Resistance Test 1. Experimental Materials The high-efficiency sunscreen mousse aerosol prepared in Example 4 of this invention, and the sunscreen mousse aerosol prepared in Comparative Examples 1 and 2.

[0067] 2. Experimental Methods Apply 1.3 mg / cm² to the PMMA plate. 2 The coating was evenly applied to each experimental material, and after air drying for 15 minutes, the SPF (SPF before friction) was measured using an SPF sun protection index analyzer. Subsequently, a friction tester was used to apply a 100g load to a 2×2cm² terminal covered with cotton cloth, wiping the cosmetic-coated area of ​​the PMMA plate. The SPF (SPF after friction) was measured again using an SPF sun protection index analyzer, and the abrasion resistance was evaluated by the SPF retention rate. SPF retention rate (%) = SPF after friction / SPF before friction × 100%. A higher SPF retention rate indicates higher abrasion resistance.

[0068] 3. Experimental Results The results of the abrasion resistance test are shown in Table 6.

[0069] Table 6 Results of abrasion resistance test

[0070] As shown in Table 6, the SPF retention rate of the high-efficiency sunscreen mousse aerosol prepared in Example 4 of this invention is as high as 87%, while the SPF retention rates of the sunscreen mousse aerosols prepared in Comparative Examples 1 and 2 are 75% and 68%, respectively. Therefore, the abrasion resistance of the high-efficiency sunscreen mousse aerosol prepared in this invention is significantly better than that of Comparative Examples 1 and 2.

Claims

1. A high-efficiency sunscreen mousse aerosol, characterized in that, It comprises the following components and their mass percentages: 10%-18% sunscreen agent combination, 1.5%-3% film-forming agent, 2%-5% moisturizer, 1%-2.5% emulsifier, 0.5%-1.5% dispersant, 20%-30% propellant, 0.1%-0.3% preservative, 0.05%-0.1% masking agent, and the balance being water; the film-forming agent includes cyclopentasiloxane and trimethylsiloxysilicate.

2. The high-efficiency sunscreen mousse aerosol according to claim 1, characterized in that, It includes the following components and their mass percentages: sunscreen combination 15%, film-forming agent 2.5%, moisturizer 4%, emulsifier 2%, dispersant 1.2%, propellant 28%, preservative 0.25%, masking agent 0.1%, and water 46.95%.

3. The high-efficiency sunscreen mousse aerosol according to claim 1 or 2, characterized in that, The sunscreen combination is composed of physical sunscreens and organic sunscreens in a mass ratio of 5-10:5-8; the physical sunscreen is one or two of rutile nano titanium dioxide and nano zinc oxide; the organic sunscreen is selected from two of ethylhexyl methoxycinnamate, octocrylene, and ethylhexyl salicylate.

4. The high-efficiency sunscreen mousse aerosol according to claim 1 or 2, characterized in that, The film-forming agent is composed of cyclopentadimethylsiloxane and trimethylsiloxysilicate in a mass ratio of 3-6:

1.

5. The high-efficiency sunscreen mousse aerosol according to claim 1 or 2, characterized in that, The emulsifier is composed of cetyl polydimethylsiloxane, polyglycerol-3 diisostearate and sodium di(lauramide-glutamine)lysine in a mass ratio of 10-15:4-7:1-2.

6. The high-efficiency sunscreen mousse aerosol according to claim 1 or 2, characterized in that, The dispersing agent is composed of polyhydroxystearic acid and acrylate / C10-30 alkanol acrylate crosspolymers in a mass ratio of 4-8:

1.

7. The high-efficiency sunscreen mousse aerosol according to claim 1 or 2, characterized in that, The moisturizer is selected from two of glycerin, sodium hyaluronate, and panthenol.

8. The high-efficiency sunscreen mousse aerosol according to claim 1 or 2, characterized in that, The propellant is one or both of pharmaceutical-grade dimethyl ether and cosmetic-grade liquefied petroleum gas.

9. The high-efficiency sunscreen mousse aerosol according to claim 8, characterized in that, The cosmetic-grade liquefied petroleum gas is composed of propane, butane, and isobutane in a mass ratio of 1:1 to 2:

1.

10. The method for preparing the high-efficiency sunscreen mousse aerosol according to any one of claims 1-9, characterized in that, Includes the following steps: S1 Add humectant and preservative to water, stir and heat to 70-75℃, keep warm and stir for 15-20 minutes, then homogenize at 4500-5500r / min for 2-4 minutes to obtain an aqueous phase system; S2 mixes sunscreen agents, film-forming agents, emulsifiers, and dispersing agents, stirs and heats to 70-75℃, keeps warm and stirs for 20-30 minutes to ensure uniform dispersion of all components, thus obtaining an oil phase system; S3. Add the oil phase system obtained in step S2 to the aqueous phase system obtained in step S1, stir and emulsify at 70-75℃ for 10-15 min, homogenize 2-3 times, 3-5 min each time, to obtain a uniform emulsion. S4. Cool the emulsion obtained in step S3 to 30-35℃, add the masking agent, stir for 5-10 minutes, adjust the pH of the system to 6.0-7.0, and obtain the muski material. S5. Pour the mousse material obtained in step S4 into an aerosol can, seal it, fill the can with propellant, shake it evenly, and you will get the high-efficiency sunscreen mousse aerosol product.

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