An oil-in-water pickering sunscreen emulsion with improved noodling and a method of making the same

Abstract

The present application relates to a kind of water-in-oil Pickering sunscreen cream of improving noodle phenomenon and its preparation method, the component of the water-in-oil Pickering sunscreen cream of improving noodle phenomenon includes: chemical sunscreen agent, emollient, film forming agent, silicone elastomer, noodle component;The noodle component includes: physical sunscreen agent, thickening agent, Pickering stabilizer.The present application is by creatively adding silicone elastomer component in the formula of water-in-oil Pickering sunscreen cream, it can significantly improve the noodle phenomenon that by physical sunscreen agent, thickening agent, Pickering stabilizer in the process of using kneading, winding and gathering appear.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology and relates to a water-in-oil picklein sunscreen lotion that improves pilling and its preparation method. Background Technology

[0002] As living standards improve, people are beginning to recognize the importance of sun protection products. The harm of ultraviolet rays to the human body is mainly manifested in long-wave ultraviolet rays (UVA) and medium-wave ultraviolet rays (UVB). UVA can penetrate the dermis layer of the skin, damaging collagen and elastic fibers, thereby causing skin to sag and age, accelerating the formation of wrinkles, and promoting the formation of melanin in the skin, leading to skin pigmentation, tanning, and other conditions. UVB can penetrate the epidermis layer of the skin, causing sunburn on the skin surface, manifested as redness, pain, burning, and other conditions.

[0003] Pickering emulsions are emulsions stabilized by solid particles adsorbed onto the oil-water interface. With their unique stability and wide range of applications, they are gradually becoming a hot topic in scientific research and industrial applications.

[0004] Applications of Pickering emulsification technology in the food and pharmaceutical fields include, for example, CN113229438A, which discloses a method for preparing a whole-grain colloidal particle-stabilized functional Pickering emulsion. In this Pickering emulsion, whole-grain raw materials are added to water at a concentration of 0.5-25 wt%, and the whole-grain raw materials are one of the following: black rice, red rice, sorghum, quinoa, millet, wheat, rice, oats, sweet potato, purple sweet potato, cassava, kudzu root, mung bean, red bean, and pea. CN113519822A discloses a method for preparing a temperature-responsive cyclodextrin nanoparticle Pickering emulsion. This invention uses cyclodextrin composite nanoparticles as Pickering particles, wherein the cyclodextrin is one of α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, and their derivatives.

[0005] A common feature of Pickering technology is the use of a large number of solid particles, and this is also true in the cosmetics industry. While the skin feel of products is less of a concern in the food and pharmaceutical fields, it is extremely important in cosmetics, and is often a primary consideration for many consumers. Reports of Pickering technology being applied to cosmetics are increasing, but the risk of pilling caused by solid particles is difficult to avoid, which is why there are very few Pickering cosmetic lotions on the market.

[0006] CN114557949A discloses a Pickering emulsion composition containing pearl powder and its preparation method. The Pickering emulsion includes submicron-sized pearl powder, oils, polyols, thickeners, and other materials, wherein the submicron-sized pearl powder is 1-15 parts by weight. CN113398034A discloses a Pickering children's sunscreen lotion and its preparation method. The sunscreen lotion contains 2-10 parts by weight of a Pickering stabilizer, which is aluminum octenyl succinate modified starch. The product contains one or more of the following: modified potato starch, β-cyclodextrin, silica, microcrystalline cellulose, and deacetylated chitosan, and also includes a thickener and a macromolecular sunscreen agent. CN110859763A discloses a Pickering emulsion loaded with a fat-soluble active ingredient, its preparation method, and a cosmetic product. The Pickering emulsion comprises an oil phase, an aqueous phase, and a stabilizer, wherein the stabilizer is PLGA / PSS nanoparticles, and the mass ratio of PLGA to PSS in the PLGA / PSS nanoparticles is 7:1-9:1. All cosmetics using Pickering emulsification technology contain a large number of solid particles and macromolecular components, posing a risk of pilling.

[0007] Generally, water-in-oil Pickering sunscreens are more prone to pilling. Solid particles such as physical sunscreen agents and Pickering stabilizers, along with large-molecule thickeners and moisturizers, can entangle and accumulate during application and rubbing, causing pilling and significant annoyance and a poor user experience. Currently, there are few reported technologies to solve the pilling problem of Pickering sunscreens. Summary of the Invention

[0008] To address the shortcomings of existing technologies, the present invention aims to provide a water-in-oil Picklein sunscreen lotion that improves the pilling phenomenon and its preparation method.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] In a first aspect, the present invention provides a water-in-oil Pickering sunscreen lotion that improves the pilling phenomenon. The components of the water-in-oil Pickering sunscreen lotion that improves the pilling phenomenon include: chemical sunscreen agent, emollient, film-forming agent, silicone elastomer, and pilling component; the pilling component includes: physical sunscreen agent, thickener, and Pickering stabilizer.

[0011] This invention creatively incorporates an organosilicon elastomer component into the formulation of a water-in-oil Pickering sunscreen, which can significantly improve the pilling phenomenon caused by the entanglement and accumulation of physical sunscreen agents, thickeners, and Pickering stabilizers during use and rubbing.

[0012] Preferably, the components of the water-in-oil Picklein sunscreen lotion that improves pilling include, by weight parts: 1-15 parts of chemical sunscreen agent, 1-40 parts of emollient, 0.5-3 parts of film-forming agent, 1-10 parts of silicone elastomer, and 1-15 parts of pilling component.

[0013] The mass fraction of the chemical sunscreen agent can be selected as 1 part, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, etc.

[0014] The amount of the emollient can be selected from 1 part, 3 parts, 5 parts, 8 parts, 10 parts, 13 parts, 15 parts, 20 parts, 25 parts, 28 parts, 30 parts, 35 parts, 40 parts, etc.

[0015] The mass fraction of the film-forming agent can be selected from 0.5 parts, 0.8 parts, 1 part, 1.2 parts, 1.5 parts, 1.8 parts, 2 parts, 2.2 parts, 2.5 parts, 2.8 parts, 3 parts, etc.

[0016] The mass fraction of the organosilicon elastomer can be selected as 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, etc.

[0017] The mass fraction of the rubbing component can be selected as 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, etc.

[0018] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0019] Preferably, the mass ratio of the organosilicon elastomer to the lint-removing component is not less than 1:2, such as 1:2, 2:3, 3:4, 1:1, 3:2, 2:1, 5:2, etc.

[0020] The amount of silicone elastomer added, i.e. the mass ratio of silicone elastomer to the pilling component, is specifically selected to be not less than 1:2 because adding too little will reduce the degree of improvement in the pilling problem.

[0021] Preferably, the rubbing component further includes a macromolecular moisturizer.

[0022] The large molecular moisturizers often added to sunscreen products can easily entangle with solid particles such as physical sunscreens and Pickering stabilizers during use and rubbing, causing pilling. The addition of silicone elastomers can also improve the degree of pilling.

[0023] Preferably, the macromolecular moisturizer includes any one or a combination of at least two of sodium hyaluronate, collagen, or tremella polysaccharide.

[0024] Preferably, the pilling component comprises, by weight parts: 0.1-12 parts physical sunscreen, 0.1-1 parts thickener, 0.01-1 parts macromolecular moisturizer, and 0.5-8 parts Pickering stabilizer.

[0025] The mass fraction of the physical sunscreen agent can be selected from 0.1 parts, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, etc.

[0026] The mass fraction of the thickener can be selected from 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part, etc.

[0027] The mass fraction of the macromolecular moisturizer can be selected from 0.01 parts, 0.05 parts, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part, etc.

[0028] The mass fraction of the Pickering stabilizer can be selected from 0.5 parts, 1 part, 1.5 parts, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, etc.

[0029] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0030] Preferably, the components of the water-in-oil Picklein sunscreen lotion that improves pilling also include: any one or a combination of at least two of the following: small molecule moisturizers, plant extracts, and non-traditional preservatives.

[0031] Preferably, the small molecule moisturizer includes any one or a combination of at least two of glycerin, 1,2-pentanediol, propylene glycol, 1,3-butanediol, sorbitol, or panthenol.

[0032] Preferably, the Pickering stabilizer comprises any one or a combination of at least two of the following: styrene / acrylate copolymer, aluminum octenyl succinate modified starch, silica, hydroxyapatite, or microcrystalline cellulose.

[0033] Preferably, the thickener comprises any one or a combination of at least two of the following: carbomer, xanthan gum, acrylate / C10-30 alkanol acrylate crosspolymer, polyacrylamide dimethyl taurate, or hydroxyethyl cellulose.

[0034] Preferably, the emollient includes squalane, octyl polymethylsiloxane, isononyl isononanoate, dibutyl adipate, hydrogenated polydecene, cetearyl alcohol, etc.

[0035] Preferably, the film-forming agent includes VP / hexadecene copolymer, triacontyl PVP, trimethylsiloxysilicate, polyvinyl acetate, acrylate copolymer, etc.

[0036] Preferably, the plant extracts include purslane extract, kidney tea extract, calendula extract, centella asiatica extract, etc.

[0037] Preferably, the chemical sunscreen agent includes ethylhexyl methoxycinnamate, hexyl diethylamino hydroxybenzoyl benzoate, ethylhexyl salicylate, homosalate, bis-ethylhexyloxyphenol methoxyphenyl triazine, disodium phenyl dibenzimidazole tetrasulfonate, butyl methoxydibenzoylmethane, etc.

[0038] Preferably, the physical sunscreen agent includes titanium dioxide and / or zinc oxide.

[0039] Preferably, the viscosity of the silicone elastomer at 25°C is 200,000-600,000 cP, for example, 200,000 cP, 300,000 cP, 400,000 cP, 500,000 cP, 600,000 cP, etc.

[0040] Preferably, the organosilicon elastomer is composed of octyl polymethylsiloxane and PEG-12 polydimethylsiloxane / PPG-20 crosslinked polymer.

[0041] Compared to other types of silicone elastomers, this invention further discovers that silicone elastomers with the above-mentioned specific composition can achieve a better effect in reducing pilling in the formulation.

[0042] Preferably, the mass ratio of the octyl polymethylsiloxane to the PEG-12 polydimethylsiloxane / PPG-20 crosslinked polymer is (3-5):1, for example, 3:1, 4:1, 5:1, etc.

[0043] In a second aspect, the present invention provides a method for preparing a water-in-oil Picoline sunscreen lotion for improving pilling as described in the first aspect, the method comprising:

[0044] (1) Mix Pickering stabilizer, thickener, water-soluble film-forming agent, optional macromolecular moisturizer, optional small molecule moisturizer with water to obtain material A; mix chemical sunscreen agent, emollient, oil-soluble film-forming agent, and physical sunscreen agent to obtain material B;

[0045] (2) Mix material A and material B together and homogenize them, then cool them down and mix them with organosilicon elastomer to obtain the water-in-oil Picklein sunscreen lotion that improves the pilling phenomenon.

[0046] The preparation method of the water-in-oil picklein sunscreen lotion involved in this invention is simple and easy to scale up for industrial production.

[0047] Preferably, the mixing temperature in step (1) is independently 50-85°C, for example 50°C, 55°C, 60°C, 65°C, 70°C, 72°C, 75°C, 78°C, 80°C, 82°C, 84°C, 85°C, etc.

[0048] Preferably, the homogenization temperature in step (2) is 70-85℃, such as 70℃, 72℃, 75℃, 78℃, 80℃, 82℃, 84℃, 85℃, etc.; and the time is 5-15min, such as 5min, 7min, 8min, 9min, 10min, 12min, 13min, 15min, etc.

[0049] Preferably, the cooling in step (2) refers to cooling to 35-45℃, such as 35℃, 37℃, 38℃, 40℃, 42℃, 43℃, 44℃, 45℃, etc.

[0050] Other specific point values ​​within the range of the above values ​​can be selected, and will not be elaborated on here.

[0051] Preferably, in step (2), the mixture is further mixed with plant extracts before being mixed with the silicone elastomer.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] This invention creatively incorporates an organosilicon elastomer component into the formulation of water-in-oil Pickering sunscreen, which can significantly improve the pilling phenomenon caused by the entanglement and accumulation of physical sunscreen agents, thickeners, and Pickering stabilizers during use and rubbing. Attached Figure Description

[0054] Figure 1 This is a picture showing the results of rubbing the sample from Example 1 on the inside of a volunteer's arm for 3 minutes.

[0055] Figure 2 This is a picture showing the results of rubbing the sample of Example 2 on the inside of a volunteer's arm for 3 minutes.

[0056] Figure 3 This is a diagram showing the results of rubbing the inside of a volunteer's arm for 1 minute on the sample of Comparative Example 1.

[0057] Figure 4 This is a picture showing the results of rubbing the inside of a volunteer's arm for 3 minutes on the sample of Example 5. Detailed Implementation

[0058] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.

[0059] The octyl polymethylsiloxane involved in Examples 1-3 below was purchased from DOW CHEMICAL COMPANY under the product name DOWSIL. TM The product is FZ-3196 Fluid; the VP / hexadecene copolymer is Antaron V-216 purchased from Ashland (China) Holdings Co., Ltd.; the ammonium polyacrylamide dimethyl taurate is Gemagique HP purchased from Curia Global, Inc.; the styrene / acrylate copolymer is Sunspheres Powder purchased from DOWCHEMICAL COMPANY; the purslane extract is a raw material from Shanghai Betaine Health Technology Co., Ltd.; and the triacontyl PVP is ANTARON WP-660 purchased from Ashland (China) Holdings Co., Ltd.

[0060] The silicone elastomers used in Examples 1-4 below were purchased from DOW CHEMICAL COMPANY and were of the model name DOWSIL. TM The EL-7040 Hydro Elastomer Blend product is composed of octyl polymethylsiloxane and PEG-12 polydimethylsiloxane / PPG-20 cross-linked polymer.

[0061] The silicone elastomer involved in Example 5 below is a product of model SeraSilk EL86 purchased from KCC Beauty. Its composition is methyl polytrimethylsiloxane and polydimethylsiloxane / vinyl polydimethylsiloxane cross-linked polymer.

[0062] The silicone elastomer involved in Example 6 below is Gransil DMG-2, a product purchased from Grant Industries, Inc., which consists of polydimethylsiloxane and polysiloxane-11.

[0063] Example 1

[0064] This invention provides a water-in-oil Picoline sunscreen lotion, the formula of which is shown in the table below:

[0065]

[0066] Its preparation method is as follows:

[0067] (1) Add purified water and styrene / acrylate copolymer into an emulsification tank, stir and heat to 80°C, and homogenize for 10 min until evenly dispersed;

[0068] (2) Glycerin, sodium hyaluronate and polyacrylamide dimethyl taurate are mixed evenly in a premixing tank and then added to an emulsification tank and mixed evenly.

[0069] (3) Add silica and p-hydroxyacetophenone into an emulsification tank and mix them evenly to obtain material A;

[0070] (4) Octyl polymethylsiloxane, dibutyl adipate, ethylhexyl methoxycinnamate, diethylamino hydroxybenzoyl hexyl benzoate, zinc oxide, and VP / hexadecene copolymer are added to an oil phase premixing tank, stirred and heated to 80°C, and mixed evenly to obtain material B.

[0071] (5) Put material B into an emulsification tank containing material A and homogenize and emulsify at 80°C for 10 min.

[0072] (6) When the temperature drops to 40℃, add the purslane extract and 1,2-pentanediol into the emulsion tank, mix evenly, and obtain material C;

[0073] (7) Add the silicone elastomer into the emulsification tank and mix evenly to obtain the product.

[0074] Example 2

[0075] This invention provides a water-in-oil Picoline sunscreen lotion, the formula of which is shown in the table below:

[0076]

[0077]

[0078] Its preparation method is as follows:

[0079] (1) Add purified water and styrene / acrylate copolymer into an emulsification tank, stir and heat to 75°C, and homogenize for 15 min until evenly dispersed;

[0080] (2) Mix 1,3-butanediol, sodium hyaluronate and polyacrylamide dimethyl taurate in a premixing tank until homogeneous, then add them to an emulsification tank and mix until homogeneous.

[0081] (3) Add silica and p-hydroxyacetophenone into an emulsification tank and mix them evenly to obtain material A;

[0082] (4) Octyl polymethylsiloxane, isononyl isononate, ethylhexyl methoxycinnamate, ethylhexyl salicylate, titanium dioxide, and VP / hexadecene copolymer are added to an oil phase premixing tank, stirred and heated to 75°C, and mixed evenly to obtain material B.

[0083] (5) Put material B into an emulsification tank containing material A and homogenize and emulsify at 75°C for 15 minutes.

[0084] (6) When the temperature drops to 45°C, add the purslane extract and 1,2-pentanediol into the emulsifying tank, mix evenly, and obtain material C;

[0085] (7) Add the silicone elastomer into the emulsification tank and mix evenly to obtain the product.

[0086] Example 3

[0087] This invention provides a water-in-oil Picoline sunscreen lotion, the formula of which is shown in the table below:

[0088]

[0089]

[0090] Its preparation method is as follows:

[0091] (1) Add purified water, hydroxyapatite, and styrene / acrylate copolymer into an emulsification tank, stir and heat to 85°C, and homogenize for 15 min until evenly dispersed;

[0092] (2) Mix propylene glycol and polyacrylamide dimethyl taurate ammonium in a premixing tank until homogeneous, then add them to an emulsification tank and mix until homogeneous.

[0093] (3) Add p-hydroxyacetophenone and acrylic (ester) copolymer into an emulsification tank and mix evenly to obtain material A;

[0094] (4) Octyl polymethylsiloxane, dibutyl adipate, humosalidinyl ester, diethylamino hydroxybenzoyl hexyl benzoate, zinc oxide, etc. are added to the oil phase premixing tank and stirred and heated to 85°C to obtain material B.

[0095] (5) Put material B into an emulsification tank containing material A and homogenize and emulsify at 85°C for 5 minutes.

[0096] (6) When the temperature drops to 40°C, add the calendula extract and 1,2-pentanediol into the emulsion tank and mix evenly to obtain material C;

[0097] (7) Dissolve a small amount of water and collagen evenly in the pre-mixing tank, then put them into the emulsification tank and mix evenly;

[0098] (8) Add the silicone elastomer to the emulsification tank and mix evenly to obtain the product.

[0099] Example 4

[0100] This embodiment provides a water-in-oil Picklein sunscreen lotion. The only difference between this lotion and Example 2 is that the mass percentage of the silicone elastomer is 2%, while the other components and their contents remain unchanged. The reduced mass is compensated by purified water, and the ratio of the silicone elastomer to the pilling component is 1:3, less than 1:2. The preparation method is the same as in Example 2.

[0101] Example 5

[0102] This embodiment provides a water-in-oil Picklein sunscreen lotion, the only difference in its formulation from Example 2 being the type of silicone elastomer (the content is the same). Its product composition consists of methyl polytrimethylsiloxane and polydimethylsiloxane / vinyl polydimethylsiloxane cross-linked polymer, while other components and their contents remain unchanged. The preparation method is the same as in Example 2.

[0103] Example 6

[0104] This embodiment provides a water-in-oil Picklein sunscreen lotion, the only difference in its formulation from Example 2 being the type of silicone elastomer (the content is the same). Its product composition consists of polydimethylsiloxane and polysiloxane-11, while other components and their contents remain unchanged. The preparation method is the same as in Example 2.

[0105] Comparative Example 1

[0106] This comparative example provides a water-in-oil Picklein sunscreen, the only difference between its formulation and Example 2 being the absence of silicone elastomer. The reduced mass is compensated by purified water, while other components and their contents remain unchanged. The ratio of silicone elastomer to the pilling component is 0, less than 1:2. Its preparation method is the same as in Example 2.

[0107] Test case

[0108] Ten volunteers aged 25-40 were selected as subjects. A 4cm × 4cm test area was drawn on the inside of the subjects' arms. 0.05g of the samples from Examples 1-6 and Comparative Example 1 were evenly applied to the test area. After the samples were completely absorbed and dried, the subjects gently rubbed the inside of their arms with their hands, and the degree of rubbing was recorded. The grading of the degree of rubbing is shown in Table 1 below:

[0109] Table 1

[0110]

[0111] The test results are shown in Table 2:

[0112] Table 2

[0113] Group Level I quantity Level II quantity Level III quantity Example 1 0 0 10 Example 2 0 0 10 Example 3 0 1 9 Example 4 3 7 0 Example 5 2 8 0 Example 6 1 5 4 Comparative Example 1 10 0 0

[0114] As shown in Table 2, compared with the comparative example, the sunscreen formula involved in this invention has excellent anti-pilling effect, and the amount and type of silicone elastomer added will affect the degree of anti-pilling effect.

[0115] The applicant declares that the technical solution of this invention is illustrated by the above embodiments, but this invention is not limited to the above embodiments, that is, it does not mean that this invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of raw materials for the products of this invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of this invention.

[0116] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0117] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A water-in-oil sunscreen lotion that improves pilling, characterized in that, The components of the water-in-oil Pickering sunscreen lotion that improves pilling include, by weight parts: 1-15 parts chemical sunscreen agent, 1-40 parts emollient, 0.5-3 parts film-forming agent, 1-10 parts silicone elastomer, and 1-15 parts pilling component; the pilling component includes, by weight parts: 0.1-1 parts physical sunscreen agent, 0.1-1 parts thickener, 0.5-8 parts Pickering stabilizer, and 0.01-1 parts macromolecular moisturizer; The macromolecular moisturizer includes any one or a combination of at least two of sodium hyaluronate, collagen, and tremella polysaccharide. The Pickering stabilizer is selected from a combination of styrene / acrylate copolymer and silica, or a combination of styrene / acrylate copolymer and hydroxyapatite; The mass ratio of the organosilicon elastomer to the desiccant component is not less than 1:2; The organosilicon elastomer is composed of octyl polymethylsiloxane and PEG-12 polydimethylsiloxane / PPG-20 crosslinked polymer.

2. The water-in-oil Picoline sunscreen lotion for improving pilling according to claim 1, characterized in that, The ingredients of the water-in-oil Picklein sunscreen lotion that improves pilling also include: any one or a combination of at least two of the following: small molecule moisturizers, plant extracts, and non-traditional preservatives.

3. The water-in-oil Picoline sunscreen lotion for improving pilling according to claim 2, characterized in that, The small molecule moisturizer includes any one or a combination of at least two of glycerin, 1,2-pentanediol, propylene glycol, 1,3-butanediol, sorbitol, or panthenol.

4. The water-in-oil sunscreen lotion for improving pilling as described in claim 1, characterized in that, The thickener includes any one or a combination of at least two of the following: carbomer, xanthan gum, acrylate / C10-30 alkanol acrylate crosspolymer, polyacrylamide dimethyl taurate, or hydroxyethyl cellulose.

5. The water-in-oil Picoline sunscreen lotion for improving pilling according to claim 1, characterized in that, The physical sunscreen agents include titanium dioxide and / or zinc oxide.

6. The water-in-oil Picoline sunscreen lotion for improving pilling according to claim 1, characterized in that, The viscosity of the organosilicon elastomer at 25°C is 200,000 cP to 600,000 cP.

7. The water-in-oil sunscreen lotion for improving pilling as described in claim 1, characterized in that, The mass ratio of the octyl polymethylsiloxane to the PEG-12 polydimethylsiloxane / PPG-20 crosslinked polymer is (3-5):

1.

8. The method for preparing a water-in-oil Picklein sunscreen lotion with improved pilling properties according to any one of claims 1-7, characterized in that, The preparation method includes: (1) Mix Pickering stabilizer, thickener, water-soluble film-forming agent, macromolecular moisturizer, optional small molecule moisturizer with water to obtain material A; mix chemical sunscreen, emollient, oil-soluble film-forming agent, and physical sunscreen to obtain material B; (2) Mix material A and material B together and homogenize them, then cool them down and mix them with organosilicon elastomer to obtain the water-in-oil Picklein sunscreen lotion that improves the pilling phenomenon.

9. The preparation method of the water-in-oil Picklein sunscreen lotion for improving pilling according to claim 8, characterized in that, Before mixing with the silicone elastomer, the mixture in step (2) is also mixed with plant extracts.

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