Strong waterproof sunscreen cream and preparation method thereof

Abstract

The invention provides a strong waterproof sunscreen cream and a preparation method thereof. By specifically selecting the types and collocation of the thickening gel composition and the emulsifier, supplementing other components and combining with the specific preparation method of the thickening gel composition, the obtained sunscreen cream not only has excellent stability and sensory experience, but also has relatively strong waterproof performance while blocking light rays at the wave band of 280-500 nm, and the sunscreen cream can be applied to the field of sunscreen cosmetics. Even if a user swims, sweats and the like, the sunscreen mask can still play a better sunscreen role.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cosmetics. More particularly, it relates to a strong waterproof sunscreen and a preparation method thereof. BACKGROUND

[0002] With the popularization of sunscreen awareness, more and more people will apply sunscreen products in outdoor activity scenes. However, in outdoor activity scenes, the flushing of sweat, seawater or swimming pool water, etc. can cause the sunscreen product to be diluted, the sunscreen efficacy to decrease, and the sunscreen product to need to be frequently re-applied, which is very inconvenient. This is also one of the main pain points of people using sunscreen products. Therefore, it is crucial for the cosmetic industry to improve the waterproof performance of sunscreen products so that they can still exert good sunscreen efficacy even in scenes where the user is swimming, sweating, etc.

[0003] Currently, thickeners, emulsifiers and film formers are usually added to sunscreen products on the market to improve the waterproof performance of sunscreen products by taking advantage of their ability to stabilize emulsion structure and enhance film formation, etc. However, the addition of film formers can easily cause sunscreen products to have a sticky and other undesirable sensory experience. Therefore, it is necessary to develop a sunscreen product with good waterproof performance and sensory experience. SUMMARY

[0004] The present application aims to provide a sunscreen that does not need to add a film former, guarantees excellent sensory experience, and has strong waterproof performance, i.e. can still exert good sunscreen efficacy even in scenes where the user is swimming, sweating, etc. by specifically selecting thickening agents, emulsifiers and other ingredients and using a specific gel method for the thickening agent.

[0005] A first object of the present application is to provide a sunscreen.

[0006] A second object of the present application is to provide a preparation method of the above-mentioned sunscreen.

[0007] The above objects of the present application are achieved by the following technical solutions: The present application provides a sunscreen comprising the following components by mass percentage: sunscreen agent 18% to 29%, thickening gel composition 7.3% to 13.5%, plant-derived sunscreen ingredient 0.01% to 1%, emulsifier 3% to 5%, emollient 6% to 10%, skin feel modifier 1% to 4%, humectant 5.05% to 11%, stabilizer 0.5% to 1.5%, and water to make up to 100%. The thickening gel composition is a mixture of thickener 1, thickener 2, oil solvent 1, and oil solvent 2, and the mass proportions of thickener 1, thickener 2, oil solvent 1, and oil solvent 2 in the sunscreen are 0.8% to 1.5%, 0.5% to 1%, 4% to 6%, and 2% to 5%, respectively; thickener 1 is trihydroxystearin; thickener 2 is at least one of disteardimonium hectorite and quaternary ammonium salt-18 bentonite; oil solvent 1 is at least one of caprylic / capric triglyceride, pentaerythritol tetracocoate, and coconut oil alcohol-caprylate / caprate; oil solvent 2 is at least one of isohexadecane and hydrogenated polydecene; the preparation method of the thickening gel composition is: mixing thickener 1, oil solvent 1, and oil solvent 2 until the system is transparent, then adding thickener 2, and shearing until a gel is formed; The emulsifier is a mixture of emulsifier 1 and emulsifier 2, and the mass proportions of emulsifier 1 and emulsifier 2 in the sunscreen are 1.5% to 2.5% and 1.5% to 2.5% respectively; emulsifier 1 is at least one of polyglyceryl-2 stearate, polyglyceryl-4 oleate, polyglyceryl-6 oleate, and polyglyceryl-6 polyricinoleate; emulsifier 2 is at least one of PEG-30 dipolyhydroxystearate, sorbitan sesquioleate, and sorbitan isostearate.

[0008] By specifically selecting and combining the thickening gel composition and emulsifier, supplemented with other ingredients, and combining them with a specific preparation method for the thickening gel composition, the present invention produces a sunscreen that not only exhibits excellent stability and sensory experience, but also blocks light in the 280-500 nm wavelength range while maintaining strong water resistance, ensuring excellent sun protection even when the user is swimming or sweating. Furthermore, compared to thickening gel compositions produced using other thickening gel compositions, emulsifiers, or other methods, the sunscreen of the present invention exhibits superior stability, sensory experience, and water resistance, resulting in a more effective sunscreen.

[0009] Preferably, the sunscreen is a mixture of UVA sunscreen, UVB sunscreen and physical sunscreen; and the mass proportions of UVA sunscreen, UVB sunscreen and physical sunscreen in the sunscreen are 3% to 7%, 12% to 14% and 3% to 8% respectively.

[0010] Further preferably, the UVA sunscreen is at least two of diethylamino hydroxybenzoyl hexyl benzoate (oil-soluble), bis-ethylhexyloxyphenol methoxyphenyl triazine (oil-soluble), and terephthalylidene dicamphor sulfonic acid (water-soluble), and the mass proportions of diethylamino hydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and terephthalylidene dicamphor sulfonic acid in the sunscreen are 2% to 4%, 1% to 2%, and 0 to 1%, respectively.

[0011] Further preferably, the UVB sunscreen agent is at least two of homosalate (oil-soluble), ethylhexyl salicylate (oil-soluble), ethylhexyl methoxy cinnamate (oil-soluble), isoamyl p-methoxycinnamate (oil-soluble), phenylbenzimidazole sulfonic acid (water-soluble), and the mass proportions of homosalate, ethylhexyl salicylate, ethylhexyl methoxy cinnamate, isoamyl p-methoxycinnamate, and phenylbenzimidazole sulfonic acid in the sunscreen cream are 0-9%, 0-5%, 0-9%, 0-9%, and 3%-5%, respectively.

[0012] Further preferably, the physical sunscreen agent is a mixture of titanium dioxide and zinc oxide, and the mass proportions of titanium dioxide and zinc oxide in the sunscreen cream are 2%-4% and 1%-4%, respectively.

[0013] The sunscreen cream obtained by the specific selection of the types of sunscreen agents and their collocation, supplemented by other ingredients, has higher SPF and PFA values, realizes high-efficiency defense against the full-waveband (280-400 nm) of ultraviolet rays, and has better sunscreen efficacy.

[0014] Further, the average particle size of the titanium dioxide is ≤200 nm.

[0015] Further, the average particle size of the zinc oxide is ≤200 nm.

[0016] Preferably, the plant-derived sunscreen ingredient is at least one of osmanthus flower extract, coptis extract, and wild rosehip oil.

[0017] Sunlight is divided into ultraviolet rays, visible light, and infrared rays, among which, UVA (280-320 nm) and UVB (320-400 nm) in the ultraviolet rays and the blue light waveband (400-500 nm) in the visible light can all penetrate the skin and cause harm to human skin, and the plant-derived sunscreen ingredient and the physical sunscreen agent are specifically selected, supplemented by other ingredients, so that the anti-blue light performance of the sunscreen cream can be more significantly improved, high-efficiency defense against the light in the waveband of 280-500 nm is realized, and the damage of sunlight to human skin is better reduced.

[0018] Preferably, the emollient is at least one of isododecane and hydrogenated polyisobutene.

[0019] Preferably, the skin feel modifier is at least one of silica, polymethylsilsesquioxane, and aluminum starch octenylsuccinate.

[0020] Preferably, the humectant is a mixture of humectant 1 and humectant 2, and the mass percentage of humectant 1 and humectant 2 in the sunscreen cream is 5% to 10% and 0.05% to 1% respectively; humectant 1 is at least one of glycerol, 1,3-propanediol and butylene glycol, and humectant 2 is at least one of betaine, sodium hyaluronate and trehalose.

[0021] Preferably, the stabilizer is sodium chloride.

[0022] Preferably, the preparation process of the thickening gel composition is carried out at 65 to 75 ℃.

[0023] Preferably, the rotation speed of the shearing is 800 to 1000 rpm.

[0024] Preferably, the shearing time is 20 to 30 min.

[0025] As an optional embodiment, the sunscreen cream contains the following mass percentages of each component: sunscreen agent 18% to 29%, thickening gel composition 7.3% to 13.5%, plant-derived sunscreen ingredient 0.01% to 1%, emulsifier 3% to 5%, emollient 6% to 10%, skin feel modifier 1% to 4%, humectant 5.05% to 11%, stabilizer 0.5% to 1.5%, preservative 0.8% to 1.0%, and water to make up to 100%.

[0026] Preferably, the preservative is a mixture of phenoxyethanol and ethylhexylglycerin, and the mass percentage of phenoxyethanol and ethylhexylglycerin in the sunscreen cream is 0.68% to 0.72% and 0.18% to 0.22% respectively.

[0027] As an optional embodiment, the sunscreen cream contains the following mass percentages of each component: sunscreen agent 18% to 29%, thickening gel composition 7.3% to 13.5%, plant-derived sunscreen ingredient 0.01% to 1%, emulsifier 3% to 5%, emollient 6% to 10%, skin feel modifier 1% to 4%, humectant 5.05% to 11%, stabilizer 0.5% to 1.5%, and fragrance 0.05% to 0.3%, and water to make up to 100%.

[0028] As an optional embodiment, the sunscreen cream contains the following mass percentages of each component: sunscreen agent 18% to 29%, thickening gel composition 7.3% to 13.5%, plant-derived sunscreen ingredient 0.01% to 1%, emulsifier 3% to 5%, emollient 6% to 10%, skin feel modifier 1% to 4%, humectant 5.05% to 11%, stabilizer 0.5% to 1.5%, preservative 0.8% to 1.0%, and fragrance 0.05% to 0.3%, and water to make up to 100%.

[0029] Preferably, the preservative is a mixture of phenoxyethanol and ethylhexylglycerin, and the mass percentage of phenoxyethanol and ethylhexylglycerin in the sunscreen cream is 0.68%-0.72% and 0.18%-0.22%, respectively.

[0030] Based on this, the application further provides a preparation method of the above-mentioned sunscreen cream, comprising the following steps: S1. Water phase: add water-soluble UVA sunscreen agent, water-soluble UVB sunscreen agent, moisturizing agent, and stabilizer into water, mix uniformly, and adjust the pH to 7.2-7.8; S2. Oil phase: dissolve the oil-soluble UVA sunscreen agent and the oil-soluble UVB sunscreen agent into transparency at 60-80 ℃, then dissolve the emulsifier and the emollient into transparency, and then add the physical sunscreen agent, the thickening gel composition, and the skin feel regulator to homogenize the material body uniformly; S3. Adjust the temperature of the water phase and the oil phase to 60-65 ℃, mix the water phase and the oil phase uniformly, homogenize once, then mix the plant-derived sunscreen ingredient, the optional preservative, and the optional fragrance uniformly, homogenize twice, and then defoam to obtain.

[0031] Preferably, the pH in S1 is adjusted by a pH adjuster, such as at least one of sodium hydroxide, arginine, and tromethamine.

[0032] Preferably, the pH is adjusted in S1 while stirring until the system is transparent, such as stirring at 500-800 rpm.

[0033] Preferably, the homogenization speed in S2 is 6000-8000 rpm.

[0034] Preferably, the method for mixing the water phase and the oil phase in S3 is that the oil phase is kept rotating, and the water phase is added at a speed that there is no water accumulation on the surface of the oil phase, and the rotation is continued for 4-6 min.

[0035] Further preferably, the rotation is realized by stirring, such as stirring at 530-600 rpm.

[0036] Preferably, the first homogenization in S3 is segmented homogenization, such as homogenization at 5000-7000 rpm for 2.5-3.5 min, and then homogenization at 8000-12000 rpm for 2.5-3.5 min.

[0037] Preferably, the mixing of the plant-derived sunscreen ingredient, the optional preservative, and the optional fragrance in S3 is realized by stirring, such as stirring at 300-400 rpm.

[0038] Preferably, the second homogenization in S3 is homogenization at 8000-12000 rpm for 1.5-2.5 min.

[0039] Preferably, the defoaming of S3 is achieved by vacuuming the system.

[0040] The present application has the following advantages: The present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 Absorption curve of the sunscreen cream obtained in Example 1 in the range of 400-500 nm.

[0042] Figure 2 Absorption curve of the sunscreen cream obtained in Example 3 in the range of 400-500 nm.

[0043] Figure 3 Absorption curve of the sunscreen cream obtained in Example 7 in the range of 400-500 nm.

[0044] Figure 4 Absorption curve of the control sample in the range of 400-500 nm. DETAILED DESCRIPTION

[0045] The present application will be further described in conjunction with specific examples, but the examples do not limit the present application in any form. Unless otherwise specified, the reagents, methods and equipment used in the present application are conventional reagents, methods and equipment in the technical field.

[0046] Unless otherwise specified, the reagents and materials used in the following examples are commercially available.

[0047] Example 1: A sunscreen cream I. Preparation of the thickening gel composition At 70℃, mix the thickening agent 1, oil solvent 1 and oil solvent 2 until the system is transparent, then add the thickening agent 2, shear at 900 rpm for 25 min (at this time the gel is formed), and the thickening gel composition is obtained.

[0048] II. The sunscreen cream contains the following components in mass percentage UVA sunscreen agent: diethylamino hydroxybenzoyl hexyl benzoate 3%, bis-ethylhexyloxyphenol methoxyphenyl triazine 1.5%, p-terphenyl dimethylene dicamphor sulfonic acid 0.5%.

[0049] UVB sunscreen: Ethylhexyl salicylate 2%, Isoamyl p-methoxycinnamate 4%, Phenylbenzimidazole sulfonic acid 4%.

[0050] Physical sunscreen: Titanium dioxide 3%, Zinc oxide 3%; average particle size of titanium dioxide < 200 nm; average particle size of zinc oxide < 200 nm.

[0051] Thickener 1: Trihydroxystearin 1%.

[0052] Thickener 2: Disteardimonium hectorite 0.8%.

[0053] Oil solvent 1: Caprylic / capric triglyceride 3%, Coco-caprylate / caprate 2%.

[0054] Oil solvent 2: Isohexadecane 2%, Hydrogenated polydecene 2%.

[0055] Plant-derived sunscreen ingredient: Osmanthus fragrans extract 0.5%, Rhizoma coptidis extract 0.05%.

[0056] Emulsifier 1: Polyglyceryl-2 stearate 0.5%, Polyglyceryl-6 polyricinoleate 1.5%.

[0057] Emulsifier 2: PEG-30 dipolyhydroxystearate 1%, Sorbitan isostearate 0.5%.

[0058] Emollient: Isododecane 4%, Hydrogenated polyisobutene 4%.

[0059] Skin feel modifier: Silica 1%, Dimethicone 0.5%.

[0060] Moisturizer 1: Glycerin 2%, 1,3-Propanediol 4%, Butylene glycol 2%.

[0061] Moisturizer 2: Betaine 0.2%, Sodium hyaluronate 0.05%, Trehalose 0.2%.

[0062] Stabilizer: Sodium chloride 1%.

[0063] Water is added up to 100%.

[0064] III. Preparation of sunscreen S1. Aqueous phase: Add water-soluble UVA sunscreen, water-soluble UVB sunscreen, moisturizer, stabilizer to water, mix well, adjust pH to 7.5 with sodium hydroxide while stirring at 600 rpm until the system is transparent; S2. Oil phase: Dissolve the oil-soluble UVA sunscreen, oil-soluble UVB sunscreen at 70 ℃ until transparent, then add the emulsifier, emollient and dissolve until transparent, then add the physical sunscreen, thickening gel composition, skin feel modifier, and homogenize at 8000 rpm until the material is uniform; S3. Adjust the temperature of the water phase and oil phase to 65 ℃, keep the oil phase stirring at 580 rpm, and add the water phase at a speed that does not accumulate water on the surface of the oil phase, then continue stirring at 580 rpm for 5 min, homogenize at 6000 rpm for 3 min, then homogenize at 10000 rpm for 3 min, then add the plant-derived sunscreen ingredient, mix at 350 rpm, then homogenize at 10000 rpm for 2 min, and finally vacuum degassing to obtain.

[0065] Example 2 A sunscreen I. Preparation of the thickening gel composition The same as Example 1.

[0066] II. The sunscreen contains the following mass percentages of each component UVA sunscreen: diethylaminohydroxybenzoyl hexyl benzoate 3%, bis- ethylhexyloxyphenol methoxyphenyl triazine 1.5%, p-benzalmalonic acid 0.5%.

[0067] UVB sunscreen: ethylhexyl salicylate 2%, isopentyl p-methoxycinnamate 4%, phenyl benzimidazole sulfonic acid 4%.

[0068] Physical sunscreen: titanium dioxide 3%, zinc oxide 3%; the average particle size of titanium dioxide is ≤200 nm; the average particle size of zinc oxide is ≤200 nm.

[0069] Thickening agent 1: trihydroxystearyl alcohol 1%.

[0070] Thickening agent 2: distearyldimethylammonium hectorite 0.8%.

[0071] Oil solvent 1: caprylic / capric triglyceride 3%, cocoyl octyl / decyl ester 2%.

[0072] Oil solvent 2: isohexadecane 2%, hydrogenated polydecene 2%.

[0073] Plant-derived sunscreen ingredient: osmanthus flower extract 0.5%, goldthread extract 0.05%.

[0074] Emulsifier 1: polyglyceryl-2 stearate 0.5%, polyglyceryl-6 polyricinoleate 1.5%.

[0075] Emulsifier 2: PEG-30 dipolyhydroxystearate 1%, sorbitan isostearate 0.5%.

[0076] Emollient: isododecane 4%, hydrogenated polyisobutene 4%.

[0077] Skin feel modifier: silica 1%, polymethylsilsesquioxane 0.5%.

[0078] Moisturizer 1: glycerin 2%, 1,3-propanediol 4%, butylene glycol 2%.

[0079] Moisturizer 2: betaine 0.2%, sodium hyaluronate 0.05%, trehalose 0.2%.

[0080] Stabilizer: sodium chloride 1%.

[0081] Preservative: phenoxyethanol 0.7%, ethylhexylglycerin 0.2%.

[0082] Fragrance: 0.2%.

[0083] Water is added up to 100%.

[0084] III. Preparation of sunscreen S1. Aqueous phase: water-soluble UVA sunscreen, water-soluble UVB sunscreen, moisturizer, stabilizer are added to water, mixed, and the pH is adjusted to 7.5 with sodium hydroxide while stirring at 600 rpm until the system is transparent; S2. Oil phase: oil-soluble UVA sunscreen, oil-soluble UVB sunscreen are dissolved at 70°C until transparent, then emulsifier, emollient are added and dissolved until transparent, then physical sunscreen, thickening gel composition, skin feel modifier are added, and homogenized at 8000 rpm until the material is uniform; S3. The temperature of the aqueous phase and oil phase is adjusted to 65°C, the oil phase is stirred at 580 rpm, and the oil phase is added to the aqueous phase at a speed that there is no water accumulation on the surface of the oil phase, then continue stirring at 580 rpm for 5 min, homogenize at 6000 rpm for 3 min, then homogenize at 10000 rpm for 3 min, then add plant-derived sunscreen ingredients, preservative, fragrance, mix at 350 rpm, then homogenize at 10000 rpm for 2 min, finally vacuum degassing to obtain the product.

[0085] Example 3: A sunscreen I. Preparation of thickening gel composition At 65°C, mix thickening agent 1, oil solvent 1, oil solvent 2 until the system is transparent, then add thickening agent 2, shear at 1000 rpm for 30 min (at this time the gel is formed), to obtain the thickening gel composition.

[0086] II. Sunscreen contains the following mass percentages of each component UVA sunscreen: diethylamino hydroxybenzoyl hexyl benzoate 4%, bis- ethylhexyloxyphenol methoxyphenyl triazine 2%, terephthalylidene dicamphor sulfonic acid 1%.

[0087] UVB sunscreen: homosalate 9%, phenylbenzimidazole sulfonic acid 5%.

[0088] Physical sunscreen: titanium dioxide 4%, zinc oxide 4%; average particle size of titanium dioxide < 200 nm; average particle size of zinc oxide < 200 nm.

[0089] Thickener 1: trihydroxystearin 1.5%.

[0090] Thickener 2: disteardimonium hectorite 1%.

[0091] Oil solvent 1: caprylic / capric triglyceride 3%, coco-caprylate / caprate 3%.

[0092] Oil solvent 2: isohexadecane 2%, hydrogenated polydecene 3%.

[0093] Plant-derived sunscreen ingredient: Rosa rugosa fruit oil 0.5%, Osmanthus fragrans flower extract 0.5%.

[0094] Emulsifier 1: polyglyceryl-4 oleate 1%, polyglyceryl-6 polyricinoleate 1.5%.

[0095] Emulsifier 2: PEG-30 dipolyhydroxystearate 1.5%, sorbitan sesquioleate 1%.

[0096] Emollient: isododecane 6%, hydrogenated polyisobutene 4%.

[0097] Skin feel modifier: silica 2%, dimethicone 2%.

[0098] Moisturizer 1: glycerin 4%, 1,3-propanediol 3%, butylene glycol 3%.

[0099] Moisturizer 2: betaine 0.5%, sodium hyaluronate 0.1%, trehalose 0.4%.

[0100] Stabilizer: sodium chloride 1.5%.

[0101] Water is added up to 100%.

[0102] III. Preparation of sunscreen S1. Aqueous phase: water-soluble UVA sunscreen, water-soluble UVB sunscreen, moisturizer, stabilizer are added to water, mixed, and pH is adjusted to 7.8 with sodium hydroxide while stirring at 500 rpm until the system is transparent; S2. Oil phase: dissolve the oil-soluble UVA sunscreen, the oil-soluble UVB sunscreen at 60 ℃ until transparent, then add the emulsifier, the emollient to dissolve until transparent, then add the physical sunscreen, the thickening gel composition, the skin feel modifier, homogenize at 6000 rpm until the material is uniform; S3. Adjust the temperature of the water phase and the oil phase to 65 ℃, keep the oil phase stirring at 530 rpm, and add the water phase at a speed that there is no water accumulation on the surface of the oil phase, then continue stirring at 530 rpm for 6 min, homogenize at 5000 rpm for 3.5 min, then homogenize at 12000 rpm for 2.5 min, add the plant-derived sunscreen ingredient, mix at 400 rpm, then homogenize at 12000 rpm for 1.5 min, and finally vacuum degassing to obtain the product.

[0103] Example 4 A sunscreen cream I. Preparation of the thickening gel composition The same as Example 1.

[0104] II. The sunscreen cream contains the following components in mass percentage UVA sunscreen: diethylamino hydroxybenzoyl hexyl benzoate 3%, bis- ethylhexyloxyphenol methoxyphenyl triazine 1.5%, p-benzalmalonic acid 0.5%.

[0105] UVB sunscreen: homosalate 4%, methoxyethyl salicylate 2%, phenyl benzimidazole sulfonic acid 4%.

[0106] Physical sunscreen: titanium dioxide 3%, zinc oxide 3%; the average particle size of titanium dioxide ≤200 nm; the average particle size of zinc oxide ≤200 nm.

[0107] Thickening agent 1: trihydroxystearin 1%.

[0108] Thickening agent 2: distearyldimethyl ammonium hectorite 0.8%.

[0109] Oil solvent 1: caprylic / capric triglyceride 3%, cocoyl caprylate / caprate 2%.

[0110] Oil solvent 2: isohexadecane 2%, hydrogenated polydecene 2%.

[0111] Plant-derived sunscreen ingredient: Coptis extract 0.05%, Rosa rugosa fruit oil 0.5%.

[0112] Emulsifier 1: polyglyceryl-2 stearate 0.5%, polyglyceryl-6 polyricinoleate 1.5%.

[0113] Emulsifier 2: PEG-30 dipolyhydroxystearate 1%, sorbitan isostearate 0.5%.

[0114] Emollient: isododecane 4%, hydrogenated polyisobutene 4%.

[0115] Skin feel modifier: silica 1%, methicone 0.5%.

[0116] Moisturizer 1: glycerin 2%, 1,3-propanediol 4%, butylene glycol 2%.

[0117] Moisturizer 2: betaine 0.2%, sodium hyaluronate 0.05%, trehalose 0.2%.

[0118] Stabilizer: sodium chloride 1%.

[0119] Water q.s. to 100%.

[0120] III. Preparation of a sunscreen Same as Example 1.

[0121] Example 5 A sunscreen I. Preparation of a thickened gel composition Same as Example 1.

[0122] II. Sunscreen comprising the following mass percentages of each component UVA sunscreen: diethylamino hydroxybenzoyl hexyl benzoate 3%, bis- ethylhexyloxyphenol methoxyphenyl triazine 1.5%.

[0123] UVB sunscreen: ethylhexyl salicylate 5%, phenylbenzimidazole sulfonic acid 4%.

[0124] Physical sunscreen: titanium dioxide 3%, zinc oxide 3%; average particle size of titanium dioxide < 200 nm; average particle size of zinc oxide < 200 nm.

[0125] Thickener 1: trihydroxystearin 1%.

[0126] Thickener 2: quaternium-18 hectorite 0.8%.

[0127] Oil solvent 1: caprylic / capric triglyceride 5%.

[0128] Oil solvent 2: isohexadecane 4%.

[0129] Plant-derived sunscreen ingredient: osmanthus flower extract 0.55%.

[0130] Emulsifier 1: polyglyceryl-6 polyricinoleate 2%.

[0131] Emulsifier 2: PEG-30 dipolyhydroxystearate 1.5%.

[0132] Emollient: isododecane 8%.

[0133] Skin feel modifier: Silica 1.5%.

[0134] Moisturizer 1: Glycerin 8%.

[0135] Moisturizer 2: Betaine 0.45%.

[0136] Stabilizer: Sodium chloride 1%.

[0137] Water q.s. to 100%.

[0138] III. Preparation of the sunscreen S1. Aqueous phase: Add water-soluble UVB sunscreen, moisturizer, stabilizer into water, mix well, adjust pH to 7.5 with sodium hydroxide while stirring at 600 rpm until the system is transparent; S2. Oil phase: Dissolve oil-soluble UVA sunscreen, oil-soluble UVB sunscreen at 70 °C until transparent, then add emulsifier, emollient to dissolve until transparent, then add physical sunscreen, thickening gel composition, skin feel modifier, homogenize at 8000 rpm until the material is uniform; S3. Adjust the temperature of the aqueous phase and the oil phase to 65 °C, keep the oil phase stirring at 580 rpm, and add the aqueous phase at a speed that there is no water accumulation on the surface of the oil phase, then continue stirring at 580 rpm for 5 min, homogenize at 6000 rpm for 3 min, then homogenize at 10000 rpm for 3 min, then add the plant-derived sunscreen ingredient, mix well at 350 rpm, then homogenize at 10000 rpm for 2 min, finally vacuum degassing to obtain.

[0139] Example 6 A sunscreen I. Preparation of the thickening gel composition Same as Example 1.

[0140] II. Sunscreen contains the following mass percentage of each component UVA sunscreen: Diethyl hydroxyl benzoyl hexyl benzoate 3%, bis-ethyl hexyloxyphenol methoxyphenyl triazine 1.5%.

[0141] UVB sunscreen: Ethylhexyl methoxy cinnamate 9%, phenyl benzimidazole sulfonic acid 4%.

[0142] Physical sunscreen: Titanium dioxide 2%, zinc oxide 2%; the average particle size of titanium dioxide is ≤200 nm; the average particle size of zinc oxide is ≤200 nm.

[0143] Thickening agent 1: Trihydroxy stearyl alcohol 1%.

[0144] Thickening agent 2: Quaternary ammonium salt-18 bentonite 0.8%.

[0145] Oil Solvent 1: Pentaerythrityl Tetraethylhexanoate 2%, Cocoyl Caprylate / Caprate 3%.

[0146] Oil Solvent 2: Hydrogenated Polydecene 4%.

[0147] Plant-derived Sunscreen Ingredient: Rosa Canina Fruit Oil 0.55%.

[0148] Emulsifier 1: Polyglyceryl-4 Oleate 1%, Polyglyceryl-6 Oleate 1%.

[0149] Emulsifier 2: Sorbitan Sesquioleate 0.5%, Sorbitan Isostearate 1%.

[0150] Emollient: Hydrogenated Polyisobutene 8%.

[0151] Skin Feel Modifier: Dimethicone 0.5%, Aluminum Starch Octenylsuccinate 1%.

[0152] Humectant 1: 1,3-Propanediol 4%, Butylene Glycol 4%.

[0153] Humectant 2: Sodium Hyaluronate 0.1%, Trehalose 0.35%.

[0154] Stabilizer: Sodium Chloride 1%.

[0155] Water q.s. to 100%.

[0156] III. Preparation of Sunscreen S1. Aqueous Phase: Add water-soluble UVB sunscreen, humectant, stabilizer into water, mix well, adjust pH to 7.5 with sodium hydroxide while stirring at 600 rpm until the system is transparent; S2. Oil Phase: Dissolve oil-soluble UVA sunscreen, oil-soluble UVB sunscreen at 70°C until transparent, then add emulsifier, emollient and dissolve until transparent, then add physical sunscreen, thickening gel composition, skin feel modifier, homogenize at 8000 rpm until the material is uniform; S3. Adjust the temperature of the aqueous phase and oil phase to 65°C, keep the oil phase stirring at 580 rpm, and add the aqueous phase at a speed that there is no water accumulation on the surface of the oil phase, then continue stirring at 580 rpm for 5 min, homogenize at 6000 rpm for 3 min, then homogenize at 10000 rpm for 3 min, then add the plant-derived sunscreen ingredient, mix well at 350 rpm, then homogenize at 10000 rpm for 2 min, finally vacuum degassing to obtain.

[0157] Example 7 A Sunscreen I. Preparation of Thickening Gel Composition Thickener 1, oil solvent 1, oil solvent 2 are mixed at 75 °C until the system is clear, then thickener 2 is added and sheared at 800 rpm for 20 min (at this point the gel is formed), to obtain the thickened gel composition.

[0158] II. Sunscreen cream comprising the following components in mass percentage UVA sunscreen agents: Diethylamino hydroxybenzoyl hexyl benzoate 2%, Bis- ethylhexyloxyphenol methoxyphenyl triazine 1%.

[0159] UVB sunscreen agents: Isoamyl p-methoxycinnamate 9%, Phenylbenzimidazole sulfonic acid 3%.

[0160] Physical sunscreen agents: Titanium dioxide 2%, Zinc oxide 1%; average particle size of titanium dioxide < 200 nm; average particle size of zinc oxide < 200 nm.

[0161] Thickener 1: Trihydroxystearin 0.8%.

[0162] Thickener 2: Distearo dimonium lithium montmorillonite 0.5%.

[0163] Oil solvent 1: Caprylic / capric triglyceride 3%, Pentaerythrityl tetraecylate 1%.

[0164] Oil solvent 2: Isohexadecane 1%, Hydrogenated polydecene 1%.

[0165] Plant-derived sunscreen ingredient: Coptis extract 0.01%.

[0166] Emulsifier 1: Polyglyceryl-2 stearate 1%, Polyglyceryl-6 polyricinoleate 0.5%.

[0167] Emulsifier 2: PEG-30 dipolyhydroxystearate 1%, Sorbitan isostearate 0.5%.

[0168] Emollients: Isododecane 4%, Hydrogenated polyisobutene 2%.

[0169] Skin feel modifiers: Silica 0.5%, Polymethylsilsesquioxane 0.5%.

[0170] Moisturizers 1: Glycerin 5%.

[0171] Moisturizers 2: Sodium hyaluronate 0.05%.

[0172] Stabilizers: Sodium chloride 0.5%.

[0173] Water q.s. to 100%.

[0174] III. Preparation of the sunscreen cream S1. Aqueous phase: add water-soluble UVB sunscreen, humectant, stabilizer into water, mix well, adjust pH to 7.2 with sodium hydroxide while stirring at 800 rpm until the system is transparent; S2. Oil phase: dissolve oil-soluble UVA sunscreen, oil-soluble UVB sunscreen at 80 ℃ until transparent, then add emulsifier, emollient to dissolve until transparent, then add physical sunscreen, thickening gel composition, skin feel modifier, homogenize at 8000 rpm until the material is uniform; S3. Adjust the temperature of the aqueous phase and the oil phase to 60 ℃, keep the oil phase stirring at 600 rpm, and add the aqueous phase at a speed that there is no water accumulation on the surface of the oil phase, then continue stirring at 600 rpm for 4 min, homogenize at 7000 rpm for 2.5 min, then homogenize at 8000 rpm for 3.5 min, add plant-derived sunscreen ingredients, mix well at 300 rpm, then homogenize at 8000 rpm for 2.5 min, finally vacuum degassing to obtain.

[0175] Comparative Example 1 I. Preparation of thickening gel composition The same as Example 1.

[0176] II. Sunscreen cream contains the following mass percentages of each component The same as Example 1, except that trihydroxystearin in thickening agent 1 is replaced by trisbehenin.

[0177] III. Preparation of sunscreen cream The same as Example 1.

[0178] Comparative Example 2 I. Preparation of thickening gel composition The same as Example 1.

[0179] II. Sunscreen cream contains the following mass percentages of each component The same as Example 1, except that lithium montmorillonite in thickening agent 2 is replaced by magnesium stearate.

[0180] III. Preparation of sunscreen cream The same as Example 1.

[0181] Comparative Example 3 I. Preparation of thickening gel composition Mix thickening agent 1, oil solvent 1, and oil solvent 2 at 70 ℃ until the system is transparent, then shear at 900 rpm for 25 min (at this time the gel is formed), to obtain the thickening gel composition.

[0182] II. Sunscreen cream contains the following mass percentages of each component Example 1 except that thickener 2 is not added and thickener 1 is adjusted to: trihydroxystearin 1.8%.

[0183] III. Preparation of the sunscreen Example 1.

[0184] Comparative Example 4 I. Preparation of the thickened gel composition Example 1.

[0185] II. Sunscreen comprising the following components in mass percent Example 1 except that the caprylic / capric triglyceride in oil solvent 1 is replaced by isononyl isononanoate.

[0186] III. Preparation of the sunscreen Example 1.

[0187] Comparative Example 5 I. Preparation of the thickened gel composition Example 1.

[0188] II. Sunscreen comprising the following components in mass percent Example 1 except that the isohexadecane in oil solvent 2 is replaced by dimethicone.

[0189] III. Preparation of the sunscreen Example 1.

[0190] Comparative Example 6 I. Preparation of the thickened gel composition Thickeners 1 and 2, oil solvent 1 are mixed at 70 °C until the system is clear, then thickener 3 is added and sheared at 900 rpm for 25 min (at which point the gel is formed) to obtain the thickened gel composition.

[0191] II. Sunscreen comprising the following components in mass percent Example 1 except that oil solvent 2 is not added and oil solvent 1 is adjusted to: caprylic / capric triglyceride 5%, coco- caprylate / caprate 4%.

[0192] III. Preparation of the sunscreen Example 1.

[0193] Comparative Example 7 I. Preparation of the thickened gel composition Example 1.

[0194] II. Sunscreen comprising the following components in mass percent The same as Example 1, except that the polyglyceryl-2 stearate in emulsifier 1 is replaced by cetyl PEG / PPG-10 / 1 dimethicone.

[0195] III. Preparation of the sunscreen The same as Example 1.

[0196] Comparative Example 8 I. Preparation of the thickened gel composition The same as Example 1.

[0197] II. Sunscreen comprising the following mass percentages of each component The same as Example 1, except that the PEG-30 dipolyhydroxystearate in emulsifier 2 is replaced by glyceryl stearate.

[0198] III. Preparation of the sunscreen The same as Example 1.

[0199] Comparative Example 9 I. Preparation of the thickened gel composition The same as Example 1.

[0200] II. Sunscreen comprising the following mass percentages of each component The same as Example 1, except that emulsifier 2 is not added and emulsifier 1 is adjusted to: polyglyceryl-2 stearate 1.5%, polyglyceryl-6 polyricinoleate 2%.

[0201] III. Preparation of the sunscreen The same as Example 1.

[0202] Comparative Example 10 I. Preparation of the thickened gel composition The thickened gel composition is obtained by mixing the thickener 1, the thickener 2, the oil solvent 1, the oil solvent 2 at 70 °C (the system is not transparent during mixing), and shearing at 900 rpm for 25 min (at this time the gel is formed).

[0203] II. Sunscreen comprising the following mass percentages of each component The same as Example 1.

[0204] III. Preparation of the sunscreen The same as Example 1.

[0205] Comparative Example 11 I. Preparation of the thickened gel composition The same as Example 1.

[0206] II. Sunscreen comprising the following mass percentages of each component The same as Example 1, except that a film-forming agent, VP / eicosene copolymer 1%, is also added.

[0207] III. Preparation of sunscreen cream S1. Water phase: water-soluble UVA sunscreen, water-soluble UVB sunscreen, humectant, stabilizer are added to water, mixed, and pH is adjusted to 7.5 with sodium hydroxide while stirring at 600 rpm until the system is transparent; S2. Oil phase: oil-soluble UVA sunscreen, oil-soluble UVB sunscreen, film-forming agent are dissolved at 70°C until transparent, then emulsifier, emollient are added and dissolved until transparent, then physical sunscreen, thickening gel composition, skin feel modifier are added, and homogenized at 8000 rpm until the material is uniform; S3. The temperature of the water phase and oil phase is adjusted to 65°C, the oil phase is stirred at 580 rpm, and the oil phase is added to the water phase at a speed that there is no water accumulation on the surface of the oil phase, then stirred at 580 rpm for 5 min, homogenized at 6000 rpm for 3 min, then homogenized at 10000 rpm for 3 min, then plant-derived sunscreen ingredients are added, mixed at 350 rpm, then homogenized at 10000 rpm for 2 min, and finally vacuum degassing is performed to obtain the product.

[0208] Test Example 1: Sensory evaluation Ten evaluators (aged 20-35 years old) who have been trained for 3 months for sensory evaluation are selected, and the sunscreen creams obtained in Examples 1-7 and Comparative Examples 1-11 are subjected to sensory testing, and the test environment is kept at constant temperature and humidity (temperature 20-22°C, relative humidity 50%-60%). The same area on the inner side of the evaluator's left arm is designated as the test area, and after each test of a sunscreen cream, the test area is thoroughly cleaned, and the evaluator sits in the test environment for 30 min before the sensory evaluation of the next sunscreen cream is performed.

[0209] The sunscreens obtained from Examples 1-7 and Comparative Examples 1-11 were taken out in the size of soybean, and the pick-up of the sunscreen was scored according to the standard of 0-25. Then, the sunscreen was applied to the test area at a speed of 1 s / circle, and after uniform application (if the sunscreen was not uniformly applied even after 10 circles, the application was stopped at 10 circles), the application, greasiness and stickiness of the sunscreen were scored according to the standard of 0-25. The average score of 10 evaluators was taken, and the average scores of the four sensory indicators, i.e. pick-up, application, greasiness and stickiness, were added to obtain the total sensory score, as shown in Table 1. The pick-up evaluates the difficulty of taking the sunscreen out of the container, 0 (difficult) -> 25 (easy); the application evaluates the difficulty of applying the sunscreen, 0 (difficult) -> 25 (easy); the greasiness evaluates the greasy degree of the skin after application, 0 (strong) -> 25 (weak); and the stickiness evaluates the adhesion between the skin and the fingers after application, 0 (strong) -> 25 (weak).

[0210] Table 1

[0211] It can be seen that the total sensory score of the sunscreens obtained from Examples 1-7 is significantly better than that of Comparative Examples 1-11, indicating that it is the sunscreen obtained by the specific selection of the thickening gel composition, the type and combination of the emulsifier, supplemented by other ingredients, combined with the specific preparation method of the thickening gel composition, that can have such excellent sensory experience, which is not only easy to take and apply, but also does not feel greasy or sticky after application.

[0212] Test Example 2 Stability Test The sunscreens obtained from Examples 1-7 and Comparative Examples 1-11 were placed in environments of-18, 5, 25 and 45 ℃ for 3 months, and whether there were unstable phenomena such as delamination, demulsification, oiling, roughening and precipitation was observed, and the results are shown in Table 2.

[0213] Table 2

[0214] In the table, "OK" indicates that there are no unstable phenomena such as delamination, demulsification, oiling, roughening and precipitation.

[0215] It can be seen that the stability of the sunscreens obtained from Examples 1-7, Comparative Example 3, Comparative Example 9 and Comparative Example 11 is better, while the sunscreens obtained from Comparative Examples 1-2, Comparative Examples 4-8 and Comparative Example 10 all have some unstable phenomena, indicating that it is the sunscreen obtained by the specific selection of the thickening gel composition, the type and combination of the emulsifier, supplemented by other ingredients, combined with the specific preparation method of the thickening gel composition, that can have such excellent stability.

[0216] Test Example 3 Safety Test According to the human skin patch test method of the Cosmetic Safety Technical Specification 2015 version, the sunscreen cream obtained in Examples 1-7 was subjected to a 30-person patch test, and the test results were all negative, indicating that the sunscreen cream of the present application has high safety.

[0217] Test Example 4 Test of Anti-ultraviolet and Waterproof Performance According to the sunscreen index (SPF value) determination method of the Cosmetic Safety Technical Specification (2015 version), the long-wave ultraviolet protection index (PFA value) determination method of sunscreen cosmetics, and the waterproof performance determination method of sunscreen cosmetics, the sunscreen creams obtained in Examples 1-6, Comparative Example 3, Comparative Example 9, and Comparative Example 11 were tested, and the SPF reduction rate was calculated according to "SPF reduction rate (%) = (SPF value before bathing - SPF value after bathing) / SPF value before bathing x 100%" to represent the waterproof performance of the sunscreen cream, and the results are shown in Table 3.

[0218] Table 3

[0219] It can be seen that the SPF value and PFA value of the sunscreen cream obtained in Examples 1-6 before bathing are higher than those of Comparative Example 3 and Comparative Example 9, indicating that the sunscreen cream of the present application has strong ultraviolet protection performance; in addition, the SPF reduction rate of the sunscreen cream obtained in Examples 1-6 before and after bathing is significantly lower than that of Comparative Example 3 and Comparative Example 9, and is comparable to that of Comparative Example 11 with the addition of a film-forming agent, indicating that the sunscreen cream of the present application can still have strong waterproof performance without the addition of a film-forming agent, and can still play a good sunscreen effect even in the scenario of swimming, sweating, etc. of the user.

[0220] Test Example 5 Blue Light Absorption Test The sunscreen creams obtained in Examples 1, 3, and 7 were added to isododecane and mixed to obtain 0.5wt% of the test sample, which was added to a 96-well enzyme plate, and placed in a multifunctional enzyme marker Bio Tek SYNERGY HTX for scanning in the blue light range of 400-500 nm. Pure isododecane was used as a control sample.

[0221] The results are shown in Table 3. Figures 1 to 4 Table 3 Figure 1 is the absorption curve of the sunscreen cream obtained in Example 1 in the range of 400-500 nm, Figure 2 is the absorption curve of the sunscreen cream obtained in Example 3 in the range of 400-500 nm, Figure 3 is the absorption curve of the sunscreen cream obtained in Example 7 in the range of 400-500 nm, Figure 4The absorption curve of the control sample in the range of 400-500 nm was determined. It can be seen that the OD value of the sunscreen cream obtained in Examples 1, 3 and 7 in the range of 400-500 nm is significantly improved compared with the control sample, indicating that the sunscreen cream of the present application can effectively block the blue light band (400-500 nm) in the visible light, and better reduce the damage of sunlight to human skin.

[0222] Test Example 6 Anti-blue light human test Twenty test subjects (aged 20-35 years old) were selected, and four test areas of 3 cm x 3 cm were selected on the back of each test subject. Three of the areas were randomly selected and evenly coated with the sunscreen cream obtained in Examples 1, 3 and 7 (as experimental groups 1-3), and the coating amount was 2±0.05 mg / cm 2 . The remaining one area was not coated. After irradiation of the four areas with blue light at an intensity of 30 J / cm 2 for 7 min, the skin melanin content MI value was detected by the CK instrument Mexameter, and the average value was taken as the result. The MI value reduction rate after using the sunscreen cream obtained in Examples 1, 3 and 7 was calculated according to the formula "MI value reduction rate (%) = (control group MI value-experimental group MI value) / control group MI value x 100%", and the results are shown in Table 4.

[0223] Table 4

[0224] It can be seen that the MI value of experimental groups 1-3 is significantly lower than that of the control group, indicating that the sunscreen cream of the present application can effectively resist the melanin deposition caused by blue light irradiation on the skin, and has excellent blue light protection effect.

[0225] The above examples are the preferred embodiments of the present application, but the embodiments of the present application are not limited by the above examples, and any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present application are equivalent replacement methods, and are all included in the protection scope of the present application.

Claims

1. A sunscreen, characterized in that: The invention comprises the following components in the following mass percentages: sunscreen 18% to 29%, thickening gel composition 7.3% to 13.5%, plant-derived sunscreen ingredient 0.01% to 1%, emulsifier 3% to 5%, emollient 6% to 10%, skin feel regulator 1% to 4%, moisturizer 5.05% to 11%, stabilizer 0.5% to 1.5%, and water is added to 100%; The thickening gel composition is a mixture of thickener 1, thickener 2, oil solvent 1, and oil solvent 2, and the mass proportions of thickener 1, thickener 2, oil solvent 1, and oil solvent 2 in the sunscreen are 0.8% to 1.5%, 0.5% to 1%, 4% to 6%, and 2% to 5%, respectively; thickener 1 is trihydroxystearin; thickener 2 is at least one of disteardimonium hectorite and quaternary ammonium salt-18 bentonite; oil solvent 1 is at least one of caprylic / capric triglyceride, pentaerythritol tetracocoate, and coconut oil alcohol-caprylate / caprate; oil solvent 2 is at least one of isohexadecane and hydrogenated polydecene; the preparation method of the thickening gel composition is: mixing thickener 1, oil solvent 1, and oil solvent 2 until the system is transparent, then adding thickener 2, and shearing until a gel is formed; The emulsifier is a mixture of emulsifier 1 and emulsifier 2, and the mass proportions of emulsifier 1 and emulsifier 2 in the sunscreen are 1.5% to 2.5% and 1.5% to 2.5% respectively; emulsifier 1 is at least one of polyglyceryl-2 stearate, polyglyceryl-4 oleate, polyglyceryl-6 oleate, and polyglyceryl-6 polyricinoleate; emulsifier 2 is at least one of PEG-30 dipolyhydroxystearate, sorbitan sesquioleate, and sorbitan isostearate.

2. The sunscreen according to claim 1, wherein The sunscreen is a mixture of UVA sunscreen, UVB sunscreen and physical sunscreen; and the mass proportions of UVA sunscreen, UVB sunscreen and physical sunscreen in the sunscreen are 3% to 7%, 12% to 14% and 3% to 8% respectively.

3. The sunscreen according to claim 2, characterized in that The UVA sunscreen is at least two of diethylamino hydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and terephthalylidene dicamphor sulfonic acid, and the mass proportions of diethylamino hydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and terephthalylidene dicamphor sulfonic acid in the sunscreen are 2% to 4%, 1% to 2%, and 0 to 1%, respectively.

4. The sunscreen according to claim 2, characterized in that The UVB sunscreen is at least two of homosalate, ethylhexyl salicylate, ethylhexyl methoxycinnamate, isoamyl p-methoxycinnamate, and phenylbenzimidazole sulfonic acid, and the mass proportions of homosalate, ethylhexyl salicylate, ethylhexyl methoxycinnamate, isoamyl p-methoxycinnamate, and phenylbenzimidazole sulfonic acid in the sunscreen are 0-9%, 0-5%, 0-9%, 0-9%, and 3%-5%, respectively.

5. The sunscreen according to claim 2, characterized in that The physical sunscreen is a mixture of titanium dioxide and zinc oxide, and the mass proportions of titanium dioxide and zinc oxide in the sunscreen are 2% to 4% and 1% to 4% respectively.

6. The sunscreen according to claim 1, characterized in that The plant-derived sunscreen ingredient is at least one of osmanthus flower extract, coptis root extract, and wild rose fruit oil.

7. The sunscreen according to claim 1, characterized in that The emollient is at least one of isododecane and hydrogenated polyisobutylene.

8. The sunscreen according to claim 1, characterized in that The skin feel regulator is at least one of silica, polymethylsilsesquioxane, and starch octenyl succinate aluminum.

9. The sunscreen according to claim 1, characterized in that The moisturizer is a mixture of moisturizer 1 and moisturizer 2, and the mass proportions of moisturizer 1 and moisturizer 2 in the sunscreen are 5% to 10% and 0.05% to 1% respectively; moisturizer 1 is at least one of glycerin, 1,3-propylene glycol, and butylene glycol, and moisturizer 2 is at least one of betaine, sodium hyaluronate, and trehalose.

10. The method for preparing the sunscreen according to any one of claims 2 to 9, characterized in that: The steps include: S1. Aqueous Phase: Add water-soluble UVA sunscreen, water-soluble UVB sunscreen, moisturizer, and stabilizer to water, mix well, and adjust the pH to 7.2-7.

8. S2. Oil Phase: Dissolve the oil-soluble UVA and UVB sunscreens at 60-80°C until transparent. Add the emulsifier and emollient until transparent. Then, add the physical sunscreen, thickening gel composition, and skin feel modifier and homogenize until the mixture is uniform. S3. Adjust the temperature of the water phase and the oil phase to 60-65°C, mix the water phase and the oil phase, perform a homogenization, add the plant-derived sunscreen ingredient, optional preservative, and optional flavor, mix well, perform a second homogenization, and degas.

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