Water-resistant and sweat-resistant sunscreen composition capable of prolonging sunscreen time and preparation method of water-resistant and sweat-resistant sunscreen composition

Abstract

The invention relates to the technical field of cosmetics, and discloses a water-resistant, sweat-resistant and sunscreen-time-prolonging sunscreen composition and a preparation method thereof, the water-resistant, sweat-resistant and sunscreen-time-prolonging sunscreen composition comprises the following raw materials: 1-2w / t% of an acrylate copolymer; 0.5-1 w / t% of a silicon elastic body; 5-15 w / t% of hydroxyapatite microspheres loaded with a physical sun-screening agent; 7-11 w / t% of a sun-screening agent; 0.2 to 0.8 w / t% of an antioxidant; 1-2 w / t% of an emulsifier; 0.8 to 1.5 w / t% of a thickening agent; 3-5w / t% of volatile silicone oil; and the balance of deionized water. The material with high durability and low irritation is realized, and the material is particularly suitable for outdoor sports or skin care scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cosmetic technology, in particular to a sunscreen composition with water and sweat resistance and prolonged sun protection time and a preparation method thereof. BACKGROUND

[0002] Under the existing environment, there are many limitations in traditional sunscreens, and the development of sunscreen products is still focused on protecting the skin from ultraviolet (UV) radiation (UVA / UVB), ignoring many problems, such as insufficient persistence, traditional organic sunscreen agents (such as avobenzone, octocrylene) are easily photodegradable, and inorganic sunscreen agents (such as titanium dioxide, zinc oxide) are easily shed due to sweating and friction, resulting in a rapid decrease in sun protection factor (SPF). Poor water and sweat resistance, most sunscreen formulations rely on film-forming agents (such as acrylates) to form a hydrophobic film, but the film structure is easily broken after long-term exposure to water or sweat, and the sunscreen agent is lost. Contradiction between skin feel and safety, inorganic sunscreen particles are prone to whitening and stickiness; organic sunscreen agents may penetrate the skin and cause irritation, and lack free radical scavenging ability, which cannot comprehensively protect against photoaging.

[0003] Therefore, there is an urgent need for a sunscreen composition with water and sweat resistance and prolonged sun protection time and a preparation method thereof to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a sunscreen composition with water and sweat resistance and prolonged sun protection time and a preparation method thereof.

[0005] The scheme of the present application is: A sunscreen composition with water and sweat resistance and prolonged sun protection time, comprising the following raw materials in mass percentage: Acrylate copolymer 1-2w / t%; Silicone elastomer 0.5-1w / t%; Loaded physical sunscreen agent hydroxyapatite microspheres 5-15w / t%; Sunscreen agent 7-11w / t%; Antioxidant 0.2-0.8w / t%; Emulsifier 1-2w / t%; Thickening agent 0.8-1.5w / t%; Volatile silicone oil 3-5w / t%; The balance is deionized water.

[0006] As a preferred technical solution, the sunscreen agent includes ethylhexyl triazone and bis-ethylhexyloxyphenol methoxphenol triazine, the emulsifier is polyglyceryl-3 diisostearate, and the thickening agent includes xanthan gum and magnesium aluminum silicate.

[0007] As a preferred technical scheme, the acrylate copolymer comprises acrylate / C12-22 alkyl alcohol methacrylate copolymer, polyacrylate cross-linked polymer-6, and hydroxyethyl acrylate / acryloyl dimethyl sodium taurate copolymer; and the silicone elastomer comprises cyclopentasiloxane (and) dimethicone / vinyl dimethicone cross-linked polymer.

[0008] As a preferred technical scheme, the hydroxyapatite microspheres are porous hydroxyapatite microspheres; and the physical sunscreen of the hydroxyapatite microspheres loaded with the physical sunscreen is nano-zinc oxide and nano-titanium dioxide.

[0009] As a preferred technical scheme, the volatile silicone oil is cyclopentasiloxane, and the antioxidant is vitamin E.

[0010] The application further discloses a preparation method of the sunscreen composition with water and sweat resistance and prolonged sunscreen time. 1) hydroxyapatite microspheres are mixed with a physical sunscreen, ball-milled, silanized, and hydroxyapatite microspheres loaded with the physical sunscreen are obtained; the hydroxyapatite microspheres loaded with the physical sunscreen are added into sodium carboxymethyl cellulose, mixed, and ultrasonically treated to be uniformly dispersed, so as to obtain a white suspension; 2) 0.5-1 w / t% silicone elastomer is mixed with cyclohexane, stirred until transparent, 1-2 w / t% acrylate copolymer is slowly added, homogenized at 2000 rpm for 2 min, and left to stand for 30 min to defoam, so as to obtain transparent premix glue, and the viscosity of the transparent premix glue is 5000 cP; 3) 5-15 w / t% hydroxyapatite microspheres loaded with the sunscreen, 7-11 w / t% sunscreen, 0.2-0.8 w / t% antioxidant and 3-5 w / t% volatile silicone oil are mixed in a 40-50 °C water bath, and magnetically stirred at 400 rpm until uniform and no particles are observed, so as to obtain phase A; 4) deionized water is heated to 70-75 °C, 1-2 w / t% emulsifier is added, dissolved, 0.8-1.5 w / t% thickening agent is slowly added and mixed, and homogenized until transparent gel is obtained, and the homogenized gel is kept at 70-75 °C for 10-20 min, so as to obtain phase B; 5) phase A is slowly added to phase B, the temperature is kept at 75-80 °C, homogenized at 12000 rpm for 3-10 min, kept at 80 °C for 20-30 min, slowly cooled to 40-45 °C, the transparent premix glue is added, paddle stirring is performed at 200 rpm for 15-20 min, the pH value is adjusted to 6.0-6.5 by using an adjusting agent, vacuum degassing is performed, 100-mesh sieve filtration is performed, and the sunscreen composition with water and sweat resistance and prolonged sunscreen time is obtained after being left to stand for 24 h and filled.

[0011] As a preferred technical scheme, the 1) step is that hydroxyapatite microspheres, nano zinc oxide and nano titanium dioxide are mixed according to a mass ratio of 5-8:2-4:2-4, zirconium oxide balls are added, the ball-to-material ratio is 5:1, ball milling is performed for 4h at a rotating speed of 150rpm, the mixed powder is obtained, the mixed powder is dispersed in ethanol, 1-3% of the mass of the mixed powder of silane coupling agent is added, reaction is performed at 60℃ for 2h, centrifugal washing is performed, drying is performed at 60℃, and the powder is sieved through a 200-mesh screen; the silane coupling agent is 3-glycidyloxypropyltrimethoxysilane.

[0012] As a preferred technical scheme, the 3) step is that the sunscreen agent is ethylhexyl triazone and bis-ethylhexyloxyphenol methoxyphenyl triazine, and the mass ratio of the two is 1-1.2:1.

[0013] As a preferred technical scheme, the 5) adjusting agent is one of citric acid or triethanolamine.

[0014] As a preferred technical scheme, the mass ratio of the silicon elastomer and cyclohexane in the 2) step is 1:2; and vacuum degassing is performed for 10min in the 5) step.

[0015] The application discloses application of a sunscreen composition with water resistance, sweat resistance and prolonged sunscreen time in cosmetics.

[0016] Due to the adoption of the above technical scheme, the sunscreen composition with water resistance, sweat resistance and prolonged sunscreen time comprises the following raw materials: 1-2w / t% of acrylate copolymer, 0.5-1w / t% of silicon elastomer, 5-15w / t% of hydroxyapatite microspheres loaded with physical sunscreen agent, 7-11w / t% of sunscreen agent, 0.2-0.8w / t% of antioxidant, 1-2w / t% of emulsifier, 0.8-1.5w / t% of thickening agent, 3-5w / t% of volatile silicone oil and the balance of deionized water.

[0017] Advantages of the application: The composition prepared by the application can efficiently reflect ultraviolet rays, has a close refractive index to skin and reduces the whitening phenomenon. The high specific surface area of the nano hydroxyapatite (HAP) microspheres can adsorb antioxidant (such as vitamin E), moisturizing agent or organic sunscreen molecule, realizes synergistic slow release, prolongs the protection time and reduces phototoxicity.

[0018] Moreover, the balance between film-forming property and skin feeling is solved, the hydrophobic body and the hydrophilic body are copolymerized to form a water-resistant network film, but the film may be rigid and stuffy when used alone. The coating is endowed with soft elasticity, friction and peeling are reduced, and the spreading property and air permeability are improved.

[0019] By designing together hydroxyapatite microspheres, silicone elastomer and acrylate copolymer, a three-dimensional film structure of "rigidity and flexibility" is formed, which has high adhesion and resistance to sweat flushing. The hydroxyapatite is modified by silane coupling agent to enhance its dispersibility in the acrylate-silicone elastomer matrix, while leaving a channel to load active ingredients. A water-resistant and stretchable film structure is formed by the reaction of siloxane bond and carboxyl group. Hydroxyapatite reflects UV, copolymer fixes sunscreen, and silicone elastomer improves skin feel, realizing the unity of SPF durability, water and sweat resistance and skin care function.

[0020] A high-durability, low-irritation material is achieved, which is particularly suitable for outdoor sports or skin care scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The initial observation figure of the product in the water resistance experiment of the application is immersed in water; Figure 2 The initial observation figure of the product coated on the glass slide in the water resistance experiment of the application is immersed in water for 20 minutes. DETAILED DESCRIPTION

[0022] To make up for the above shortcomings, the present application provides a sunscreen composition and a preparation method thereof for prolonging sunscreen time against water and sweat to solve the problems in the above background art.

[0023] In order to make the technical means, creative features, purposes and effects achieved by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0024] Example 1 A preparation method of a sunscreen composition for prolonging sunscreen time against water and sweat, comprising the following steps: 1) Hydroxyapatite microspheres are mixed with physical sunscreen agents, ball milled, silanized to obtain hydroxyapatite microspheres loaded with physical sunscreen agents, the hydroxyapatite microspheres loaded with physical sunscreen agents are added to sodium carboxymethyl cellulose and mixed, ultrasonically treated to disperse uniformly, and a white suspension is obtained; 2) 0.5w / t% silicone elastomer is mixed with cyclohexane, stirred until transparent, 1w / t% acrylate copolymer is slowly added, homogenized at 2000rpm for 2min, and defoamed for 30min, to obtain a transparent premix gel with a viscosity of 5000cP; 3) 5w / t% hydroxyapatite microspheres loaded with sunscreen agents, 7w / t% sunscreen agents, 0.2w / t% antioxidants and 3w / t% volatile silicone oil are mixed in a 40℃ water bath, magnetically stirred at 400rpm until uniform and particle-free, to obtain phase A; 4) Deionized water is heated to 70℃, 1w / t% emulsifier is added, after dissolution, 0.8w / t% thickening agent is slowly added and mixed, homogenized to transparent gel, and kept for 10-20min, to obtain phase B; 5) Phase A is slowly added to phase B, the temperature is kept at 75℃, homogenized, 12000rpm, 3min; kept at 80℃ for 20min, then slowly cooled to 40℃, transparent premix gel is added, paddle stirring, 200rpm, 15min, pH is adjusted to 6.0 with adjusting agent; vacuum degassing, 100 mesh sieve filtration; after standing for 24h, the sunscreen composition with water and sweat resistance and prolonged sun protection time is obtained.

[0025] The emulsifier is polyglyceryl-3 diisostearate, the thickening agent includes xanthan gum and magnesium aluminum silicate, the xanthan gum is 0.7w / t%, and the magnesium aluminum silicate is 0.5w / t%.

[0026] The volatile silicone oil is cyclopentasiloxane, and the antioxidant is vitamin E.

[0027] The 1) step is that hydroxyapatite microspheres, nano zinc oxide and nano titanium dioxide are mixed according to a mass ratio of 5:2:2, zirconium oxide balls are added, the ball-to-material ratio is 5:1, ball milling is performed for 4h at a rotating speed of 150rpm, a mixed powder is obtained, the mixed powder is dispersed in ethanol, 1% of the mass of the mixed powder of silane coupling agent is added, reaction is performed at 60℃ for 2h, centrifugal washing is performed, drying is performed at 60℃, and the product is sieved through a 200 mesh sieve; the silane coupling agent is 3-glycidyloxypropyltrimethoxysilane.

[0028] The 3) step sunscreen agent is ethylhexyl triazone and bis-ethylhexyloxyphenol methoxyphenyl triazine, and the mass ratio is 1:1.

[0029] The 5) adjusting agent is one of citric acid or triethanolamine.

[0030] In the 2) step, the mass ratio of the silicone elastomer and cyclohexane is 1:2; in the 5) step, vacuum degassing is performed for 10min.

[0031] Example 2 A preparation method of a sunscreen composition with water and sweat resistance and prolonged sun protection time includes the following steps: 1) Hydroxyapatite microspheres are mixed with physical sunscreen agents, then ball milling is performed, silanization treatment is performed, hydroxyapatite microspheres loaded with physical sunscreen agents are obtained, the hydroxyapatite microspheres loaded with physical sunscreen agents are added to sodium carboxymethyl cellulose, mixed, and ultrasonic treatment is performed to disperse uniformly, to obtain a white suspension; 2) 1w / t% of a silicone elastomer is mixed with cyclohexane, stirred to be transparent, 2w / t% of an acrylate copolymer is slowly added, homogenized at 2000rpm for 2min, and left to stand for 30min to defoam, to obtain a transparent premix gel, and the viscosity is 5000cP; 3) 50℃ water bath, 15w / t% sunscreen loaded hydroxyapatite microspheres, 11w / t% sunscreen, 0.8w / t% antioxidant and 5w / t% volatile silicone oil were mixed, magnetic stirring 400rpm until uniform and no particles, to obtain phase A; 4) Deionized water was heated to 75℃, 2w / t% emulsifier was added, after dissolution, 1.5w / t% thickening agent was slowly added and mixed, homogenized to transparent gel, kept for 20min, to obtain phase B; 5) Phase A was slowly added to phase B, the temperature was kept at 80℃, homogenized, 12000rpm, 10min; after keeping at 80℃ for 30min, it was slowly cooled to 45℃, transparent premixed gel was added, paddle stirring, 200rpm, 20min, pH was adjusted to 6.5 with adjusting agent; vacuum degassing, 100 mesh sieve filtration; after standing for 24h, it was filled to obtain a sunscreen composition with water and sweat resistance and prolonged sun protection time.

[0032] The 1) step is to mix hydroxyapatite microspheres, nano zinc oxide and nano titanium dioxide at a mass ratio of 8:4:4, add zirconium oxide balls, ball-to-material ratio 5:1, ball mill for 4h at a speed of 150rpm, obtain mixed powder, disperse the mixed powder in ethanol, add 1-3% silane coupling agent based on the mass of the mixed powder, react at 60℃ for 2h, centrifugal wash, dry at 60℃, pass through a 200 mesh sieve; the silane coupling agent is 3-glycidyloxypropyltrimethoxysilane.

[0033] The 3) step sunscreen is ethylhexyl triazone and bis-ethylhexyloxyphenol methoxycinnamate, the mass ratio is 1.2:1.

[0034] The 5) adjusting agent is one of citric acid or triethanolamine.

[0035] The mass ratio of the 2) step silicone elastomer and cyclohexane is 1:2; the 5) step vacuum degassing is 10min.

[0036] The emulsifier is polyglyceryl-3 diisostearate, the thickening agent includes xanthan gum and magnesium aluminum silicate, the xanthan gum is 0.9w / t%, the magnesium aluminum silicate is 0.6w / t%.

[0037] The volatile silicone oil is cyclopentasiloxane, the antioxidant is vitamin E.

[0038] Example 3 A method for preparing a sunscreen composition with water and sweat resistance and prolonged sun protection time, comprising the following steps: 1) Hydroxyapatite microspheres are mixed with physical sunscreen agents, ball-milled, silanized to obtain hydroxyapatite microspheres loaded with physical sunscreen agents, the hydroxyapatite microspheres loaded with physical sunscreen agents are added to sodium carboxymethyl cellulose and mixed, and ultrasonic treatment is performed to disperse uniformly to obtain a white suspension; 2) 1 w / t% silicone elastomer is mixed with cyclohexane, stirred until transparent, 2 w / t% acrylate copolymer is slowly added, homogenized at 2000 rpm for 2 min, and left to stand for 30 min to defoam to obtain a transparent premix gel, and the viscosity thereof is 5000 cP; 3) 10 w / t% hydroxyapatite microspheres loaded with sunscreen agents, 8 w / t% sunscreen agents, 0.5 / t% antioxidant and 3 w / t% volatile silicone oil are mixed in a 45°C water bath, and magnetic stirring is performed at 400 rpm until uniform and free of particles to obtain phase A; 4) Deionized water is heated to 75°C, 1.5 w / t% emulsifier is added, dissolved, 0.8 w / t% thickening agent is slowly added and mixed, and homogenized until transparent gel is obtained, and the mixture is kept at 75°C for 15 min to obtain phase B; 5) Phase A is slowly added to phase B, the temperature is kept at 78°C, homogenization is performed at 12000 rpm for 3 min, the temperature is kept at 80°C for 25 min, and then slowly cooled to 45°C, the transparent premix gel is added, paddle stirring is performed at 200 rpm for 15 min, an adjusting agent is added to adjust the pH to 6.5, vacuum degassing is performed, 100-mesh sieve filtration is performed, and the sunscreen composition with water and sweat resistance and prolonged sunscreen time is obtained after standing for 24 h.

[0039] In the step 1), the hydroxyapatite microspheres, nano-zinc oxide and nano-titanium dioxide are mixed in a mass ratio of 5:2.5:2.5, zirconium oxide balls are added, the ball-to-material ratio is 5:1, ball milling is performed at a speed of 150 rpm for 4 h to obtain a mixed powder, the mixed powder is dispersed in ethanol, 1% of silane coupling agent based on the mass of the mixed powder is added, reaction is performed at 60°C for 2 h, centrifugal washing is performed, drying is performed at 60°C, and the product is sieved through a 200-mesh sieve; the silane coupling agent is 3-glycidyloxypropyltrimethoxysilane.

[0040] In the step 3), the sunscreen agents are ethylhexyl triazone and bis-ethylhexyloxyphenol methoxyphenyl triazine, and the mass ratio thereof is 1:1.

[0041] In the step 5), the adjusting agent is one of citric acid or triethanolamine.

[0042] In the step 2), the mass ratio of the silicone elastomer to cyclohexane is 1:2; and in the step 5), vacuum degassing is performed for 10 min.

[0043] The emulsifier is polyglyceryl-3 diisostearate, and the thickening agent includes xanthan gum and magnesium aluminum silicate, the mass fraction of the xanthan gum is 0.5 w / t%, and the mass fraction of the magnesium aluminum silicate is 0.3 w / t%.

[0044] The volatile silicone oil is cyclopentamethicone, and the antioxidant is vitamin E.

[0045] Comparative Example 1 The preparation method is the same as that in Example 3, except that 2) the 2w / t% acrylate copolymer is directly used in 5) the step to obtain the product.

[0046] Comparative Example 2 The preparation method is the same as that in Example 3, except that 2) 1w / t% silicone elastomer is mixed with cyclohexane, stirred until transparent, and a transparent premix gel is obtained to obtain the product.

[0047] Comparative Example 3 The preparation method is the same as that in Example 3, except that 1) the 1) step is that the hydroxyapatite microspheres are replaced by silica microspheres to obtain the product.

[0048] Comparative Example 4 A preparation method of a sunscreen composition with water and sweat resistance and prolonged sun protection time, comprising the following steps: 1) Grinding hydroxyapatite microspheres with physical sunscreen agents, silanizing treatment, to obtain hydroxyapatite microspheres loaded with physical sunscreen agents; 2) Mixing 2w / t% silicone elastomer with cyclohexane, stirring until transparent, slowly adding 0.5w / t% acrylate copolymer, homogenizing at 5000rpm for 2min, standing for 30min to defoam, and obtaining a transparent premix gel; 3) Mixing 16w / t% hydroxyapatite microspheres loaded with sunscreen agents, 12w / t% sunscreen agents, 1w / t% antioxidant, and 6w / t% volatile silicone oil in a 60℃ water bath, and magnetically stirring at 400rpm / min until uniform and particle-free to obtain phase A; 4) Heating deionized water to 75℃, adding 2.5w / t% emulsifier, slowly adding 2w / t% thickening agent after dissolution, and mixing to obtain a transparent gel to obtain phase B; 5) Slowly adding phase A to phase B, homogenizing at 12000rpm for 3min, cooling to 45℃, adding the transparent premix gel thereto, paddle stirring at 200rpm for 20min, adjusting to pH 6.5 with an adjusting agent, vacuum degassing, filtering through a 100 mesh sieve, and filling to obtain the product.

[0049] The 1) step is that hydroxyapatite microspheres, nano-zinc oxide, and nano-titanium dioxide are mixed at a mass ratio of 5:2.5:2.5, zirconium oxide balls are added at a ball-to-material ratio of 5:1, ball milling is performed at a speed of 300rpm for 4h, a mixed powder is obtained, the composite powder is dispersed in ethanol, 1% of silane coupling agent based on the mass of the mixed powder is added, reaction is performed at 60℃ for 2h, centrifugal washing is performed, drying is performed at 60℃, and the product is sieved through a 200 mesh sieve; the silane coupling agent is 3-glycidyloxypropyltrimethoxysilane.

[0050] The 3) step sunscreen is ethylhexyl triazone and bis-ethylhexyloxyphenol methoxyphenone, with a mass ratio of 1:1.2.

[0051] The 5) adjusting agent is one of citric acid or triethanolamine.

[0052] The mass ratio of the silicon elastomer and cyclohexane in the 2) step is 1:3; and the vacuum degassing in the 5) step is 10 min.

[0053] The emulsifier is polyglyceryl-3 diisostearate, the thickening agent includes xanthan gum and magnesium aluminum silicate, the xanthan gum is 1 w / t%, and the magnesium aluminum silicate is 1 w / t%.

[0054] The volatile silicone oil is cyclopentasiloxane, and the antioxidant is vitamin E.

[0055] The water resistance of Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3, and Example 4 is verified, and the sensitive skin adaptation experiment of Example 3 is performed.

[0056] Water resistance experiment The products participating in the experiment are respectively coated on glass slides, and after uniform coating, the glass slides are immersed in water, and the timing is started, and the initial observation is performed (0 min). Figure 1 ) and the observation of whether the product falls off is performed after 20 min.

[0057] After 20 min, the product of Example 3 slightly diffuses, does not fall off, and still exists on the glass slide, showing good water resistance. Figure 2 ).

[0058] However, the products of Comparative Example 1, Comparative Example 2, Comparative Example 3, and Comparative Example 4, the products of Comparative Example 1, Comparative Example 2, and Comparative Example 3, diffuse and fall off, and do not exist on the glass, and have poor water resistance; and the product of Comparative Example 4 diffuses, and one third of the product is separated from the glass slide.

[0059] Sensitive skin adaptation experiment Human skin patch test: qualified patch test materials are selected, and the closed patch test method is used, about 0.020 ml to 0.025 ml of the test substance is placed in the patch tester, and the outer low-sensitization adhesive tape is attached to the curved side of the forearm of the test subject, and after 24 hours, the test substance is removed, and the skin reaction is observed at 0.5, 24, and 48 hours after removal, respectively.

[0060]

[0061] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A water-resistant, sweat-resistant, extended sun protection time, sunscreen composition characterized in that, The raw materials include the following mass percentages: acrylate copolymer 1-2 w / t%; silicone elastomer 0.5-1 w / t%; physical sunscreen-loaded hydroxyapatite microspheres 5-15 w / t%; sunscreen 7-11 w / t%; antioxidant 0.2-0.8 w / t%; emulsifier 1-2 w / t%; thickening agent 0.8-1.5 w / t%; volatile silicone oil 3-5 w / t%; the balance is deionized water.

2. A water-resistant, sweat-resistant, sunburn-preventing sunscreen composition according to claim 1, wherein: The sunscreen includes ethylhexyl triazone and bis-ethylhexyloxyphenol methoxyphenyl triazine, the emulsifier is polyglyceryl-3 diisostearate, and the thickening agent includes xanthan gum and magnesium aluminum silicate.

3. A water-resistant, sweat-resistant, sunburn-preventing sunscreen composition according to claim 1, wherein: The hydroxyapatite microspheres are porous hydroxyapatite microspheres; the physical sunscreen of the physical sunscreen-loaded hydroxyapatite microspheres is nano-zinc oxide and nano-titanium dioxide.

4. A water-resistant, sweat-resistant, sunburn-preventing sunscreen composition according to claim 1, wherein: The volatile silicone oil is cyclopentasiloxane, and the antioxidant is vitamin E and butylated hydroxytoluene.

5. A process for the preparation of a water-resistant, sweat-resistant, long-lasting sun protection composition according to any one of claims 1 to 4, characterized in that The method includes the following steps: 1) mixing the hydroxyapatite microspheres and the physical sunscreen, ball milling, silanization treatment, obtaining the physical sunscreen-loaded hydroxyapatite microspheres, adding the physical sunscreen-loaded hydroxyapatite microspheres into sodium carboxymethyl cellulose, mixing, ultrasonic treatment, uniformly dispersing, obtaining a white suspension; 2) mixing 0.5-1 w / t% silicone elastomer and cyclohexane, stirring until transparent, slowly adding 1-2 w / t% acrylate copolymer, homogenizing at 2000 rpm for 2 min, standing for 30 min to defoam, obtaining a transparent premix gel, and the viscosity is 5000 cP; 3) water bath at 40-50 °C, mixing 5-15 w / t% sunscreen-loaded hydroxyapatite microspheres, 7-11 w / t% sunscreen, 0.2-0.8 w / t% antioxidant, and 3-5 w / t% volatile silicone oil, magnetic stirring at 400 rpm until uniform and no particles, obtaining phase A; 4) heating deionized water to 70-75 °C, adding 1-2 w / t% emulsifier, dissolving, slowly adding 0.8-1.5 w / t% thickening agent, mixing, homogenizing until transparent gel, keeping warm for 10-20 min, obtaining phase B; 5) slowly adding phase A to phase B, keeping the temperature at 75-80 °C, homogenizing at 12000 rpm for 3-10 min; keeping warm at 80 °C for 20-30 min, slowly cooling to 40-45 °C, adding the transparent premix gel, paddle stirring at 200 rpm for 15-20 min, adjusting to pH 6.0-6.5 with an adjusting agent; vacuum degassing, filtering through a 100-mesh screen; after standing for 24 h, filling to obtain a sunscreen composition with water and sweat resistance and prolonged sun protection time.

6. A process for the preparation of a water resistant, sweat resistant, long-lasting sun screen composition according to claim 1, characterized in that: The step 1) is mixing hydroxyapatite microspheres, nano-zinc oxide, and nano-titanium dioxide at a mass ratio of 5-8:2-4:2-4, adding zirconium oxide balls, ball-to-material ratio 5:1, ball milling for 4 h at a speed of 150 rpm, obtaining a mixed powder, dispersing the mixed powder in ethanol, adding 1-3% silane coupling agent based on the mass of the mixed powder, reacting at 60 °C for 2 h, centrifugal washing, drying at 60 °C, and passing through a 200-mesh screen; the silane coupling agent is 3-glycidyloxypropyltrimethoxysilane.

7. A process for the preparation of a water resistant, sweat resistant, long-lasting sun screen composition according to claim 1, characterized in that: The 3) step sunscreen is ethylhexyl triazone and bis-ethylhexyloxyphenol methoxyphenyl triazine, with a mass ratio of 1-1.2:

1.

8. A process for the preparation of a water resistant, sweat resistant, long-lasting sun screen composition according to claim 1, characterized in that: The 5) adjusting agent is one of citric acid or triethanolamine.

9. A process for the preparation of a water resistant, sweat resistant, long-lasting sun screen composition according to claim 1, characterized in that: The mass ratio of the silicon elastomer and cyclohexane in the 2) step is 1:2; and the vacuum degassing time in the 5) step is 10 min.

10. Use of a water-resistant and sweat-resistant long-lasting sunscreen composition according to any one of claims 1-4 in cosmetics.

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