Sunscreen cosmetic and preparation method therefor

Abstract

The present application relates to a sunscreen composition, a sunscreen cosmetic, and a preparation method therefor. The sunscreen composition comprises: 5 wt% to 35 wt% of an anionic emulsifier, 8 wt% to 30 wt% of a glycoside emulsifier, 35 wt% to 65 wt% of a long-chain fatty alcohol, and 12 wt% to 45 wt% of a poly C10-C30 alkane alcohol acrylic acid ester, wherein the length of the carbon chain of the long-chain fatty alcohol is ≥14.

Description

Sunscreen cosmetic and preparation method thereof

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 202410880522.9, filed on July 2, 2024, entitled "Sunscreen composition, sunscreen cosmetic and preparation method thereof", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of cosmetics, in particular to a sunscreen composition, a sunscreen cosmetic and a preparation method thereof. BACKGROUND

[0004] To protect the skin from photoaging, sunburn and reduce the incidence of skin cancer, sunscreen cosmetics are currently widely used in skin photoprotection related scenarios. Commonly used sunscreen agents for UVA / UVB photoprotection include inorganic sunscreen agents such as titanium dioxide and zinc oxide, and organic sunscreen agents such as avobenzone, methoxy cinnamate ethylhexyl and ethylhexyl triazone.

[0005] Generally speaking, the degree of UV protection of sunscreen cosmetics is closely related to the content and type of sunscreen agents contained therein. The higher the content of sunscreen agents, the higher the degree of UV protection. However, most existing sunscreen agents are oily or oil-soluble materials, which results in that when different forms of sunscreen cosmetics such as lotions, emulsions, creams, gels, gel creams, foams, sprays and sticks made of the sunscreen agents are applied to the skin, the user will feel sticky and heavy. At the same time, excessive addition of organic sunscreen agents can cause skin sensitivity in users, and excessive addition of inorganic sunscreen agents can cause the cosmetic to appear white and difficult to spread, etc. In addition, due to the special microstructure of the skin, sunscreen cosmetics that are difficult to spread tend to accumulate in wrinkles, thereby reducing the sunscreen spread area and affecting the sunscreen effect. SUMMARY

[0006] According to an embodiment of the present application, a sunscreen composition is provided.

[0007] A sunscreen cosmetic includes a sunscreen composition and a sunscreen agent. The sunscreen composition includes an anionic emulsifier, a glycoside emulsifier, a long-chain fatty alcohol, and a poly-C 10 ~C 30 alkyl acrylate. In the sunscreen cosmetic, the content of the anionic emulsifier is 0.1wt%~0.4wt%, the content of the glycoside emulsifier is 0.12wt%~0.48wt%, the content of the long-chain fatty alcohol is 0.48wt%~1.92wt%, and the content of the poly-C 10 ~C30 The content of alkyl alcohol acrylate is 0.4wt%-0.8wt%, the mass ratio of the glycoside emulsifier to the long-chain fatty alcohol is 1:4; wherein, the poly C 10 ~C 30 The alkyl alcohol acrylate is selected from at least one of octadecyl modified acrylate homopolymer and docosyl modified acrylate homopolymer, the carbon chain length of the long-chain fatty alcohol is 14-22, the carbon chain length of the glycoside emulsifier is 12-20, and the anionic emulsifier is selected from at least one of glycerol stearate citrate, potassium cetyl phosphate, sodium stearoyl glutamate and sodium methyl stearoyl taurate.

[0008] In one of the embodiments, the long-chain fatty alcohol is selected from at least one of myristyl alcohol, cetyl alcohol, stearyl alcohol, arachidyl alcohol and behenyl alcohol; and / or, the glycoside emulsifier is selected from at least one of coco-glucoside, myristyl glucoside, cetearyl glucoside and arachidyl glucoside.

[0009] In one of the embodiments, the mass ratio of the sunscreen composition to the sunscreen agent is 1:2-1:10.

[0010] In one of the embodiments, the sunscreen agent is selected from at least one of ethylhexyl triazone, bis-ethylhexyloxyphenol methoxyphenyl triazine, methoxyethyl salicylate, oxybenzone, homosalate, octinoxate, butyl methoxydibenzoylmethane, titanium dioxide and zinc oxide.

[0011] In one of the embodiments, the irregularity of emulsion droplets in the sunscreen cosmetic is ≥80%.

[0012] A preparation method of the sunscreen cosmetic as described above, comprising the following steps: under heating conditions, mixing the sunscreen composition with an oil phase solution for the first time, and then adding an aqueous phase solution for the second time to obtain a mixture, wherein the oil phase solution at least comprises a sunscreen agent; cooling the mixture to obtain the sunscreen cosmetic.

[0013] In one of the embodiments, the temperature of the heating conditions is 75°C-85°C; and / or, the rotation speed of the first mixing is 260rpm-800rpm, and the time is 5min-15min; and / or, the rotation speed of the second mixing is 4000rpm-8000rpm, and the time is 3min-8min.

[0014] The above-mentioned sunscreen cosmetic, by using the poly C 10 ~C 30The synergistic effect of alkyl alcohol acrylate, specific long-chain fatty alcohol, anionic emulsifier and glycoside emulsifier, on the one hand, the specific long-chain fatty alcohol and poly-C 10 ~C 30 The acrylate group of alkyl alcohol acrylate has strong van der Waals force, which is conducive to promoting the interaction between the interface film and the crystal of the emulsion droplet. 10 ~C 30 The alkyl alcohol acrylate forms a specific and uniform crystal structure, so that the emulsion droplets in the sunscreen cosmetic have irregular shapes, thereby increasing the number of light refraction and the optical path, increasing the contact opportunity between ultraviolet rays and sunscreen agents, significantly improving the utilization rate of sunscreen agents, and at the same time, it is conducive to improving the surface energy of the emulsion droplets, thereby increasing the film-forming area and film-forming speed of the sunscreen agent and improving the sunscreen effect; on the other hand, the anionic emulsifier and the glycoside emulsifier can improve the compatibility with the poly-C 10 ~C 30 The compatibility of alkyl alcohol acrylate and long-chain fatty alcohol increases the interaction between the interface film and the crystal of the emulsion droplet, and the anionic emulsifier can also improve the Zeta potential of the interface film, increase the repulsion between the emulsion droplets, and reduce the aggregation of the emulsion droplets, thereby improving the stability of the interface film of the emulsion droplet and the compatibility with other cosmetic ingredients, and further improving the excellent thermal stability of the sunscreen cosmetic.

[0015] The sunscreen cosmetic prepared by the sunscreen composition of the present application has stable and uniform irregular emulsion droplets, effectively improves the sunscreen effect and the utilization rate of sunscreen agents, and the sunscreen cosmetic has good film-forming effect, spreading property, uniformity, mildness and dryness, and has wide market prospects.

[0016] The details of one or more embodiments of the present application are presented in the following drawings and description. Other features, objects and advantages of the present application will become apparent from the description, drawings and claims. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the disclosed drawings.

[0018] Figure 1 is a microscope photograph of the emulsion droplets of the sunscreen cosmetic prepared by the embodiment 1 of the present application.

[0019] Figure 2 is a microscope photograph of the emulsion droplets of the sunscreen cosmetic prepared by the embodiment 2 of the present application.

[0020] Figure 3 is a microscope photograph of the emulsion droplets of the sunscreen cosmetic prepared by the embodiment 3 of the present application.

[0021] Figure 4 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Example 4 of the present application.

[0022] Figure 5 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Example 5 of the present application.

[0023] Figure 6 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Example 6 of the present application.

[0024] Figure 7 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Example 7 of the present application.

[0025] Figure 8 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 1 of the present application.

[0026] Figure 9 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 2 of the present application.

[0027] Figure 10 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 3 of the present application.

[0028] Figure 11 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 4 of the present application.

[0029] Figure 12 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 5 of the present application.

[0030] Figure 13 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 6 of the present application.

[0031] Figure 14 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 7 of the present application.

[0032] Figure 15 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 8 of the present application.

[0033] Figure 16 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Example 1 of the present application after staining and immediately after application.

[0034] Figure 17 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 1 of the present application after staining and immediately after application.

[0035] Figure 18 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 5 of the present application after staining and immediately after application.

[0036] Figure 19 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Comparative Example 6 of the present application after staining and immediately after application.

[0037] Figure 20 is a photomicrograph of emulsion droplets of a sunscreen cosmetic prepared according to Example 1 of the present application after staining and 2 hours after application.

[0038] Fig. 21 is a microscope photograph of the sunscreen cosmetic emulsion droplet prepared in Comparative Example 1 of the present application after being dyed and applied for 2 h.

[0039] Fig. 22 is a microscope photograph of the sunscreen cosmetic emulsion droplet prepared in Comparative Example 5 of the present application after being dyed and applied for 2 h.

[0040] Fig. 23 is a microscope photograph of the sunscreen cosmetic emulsion droplet prepared in Comparative Example 6 of the present application after being dyed and applied for 2 h. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments or examples only and is not intended to be limiting of the present application. As used herein, the term "and / or" is an optional range that includes any one of two or more associated listed items, and also includes any and all combinations of the associated listed items.

[0043] The sunscreen cosmetic provided by the present application includes a sunscreen composition and a sunscreen agent, the sunscreen composition includes an anionic emulsifier, a glycoside emulsifier, a long-chain fatty alcohol, and a poly-C 10 ~C 30 alkyl acrylate, and in the sunscreen cosmetic, the content of the anionic emulsifier is 0.1 wt% to 0.4 wt%, the content of the glycoside emulsifier is 0.12 wt% to 0.48 wt%, the content of the long-chain fatty alcohol is 0.48 wt% to 1.92 wt%, and the content of the poly-C 10 ~C 30 alkyl acrylate is 0.4 wt% to 0.8 wt%, and the mass ratio of the glycoside emulsifier to the long-chain fatty alcohol is 1:4; wherein the poly-C 10 ~C 30The alkyl alcohol acrylate is selected from at least one of octadecyl modified acrylate homopolymer and docosyl modified acrylate homopolymer, the carbon chain length of the long chain fatty alcohol is 14-22, the carbon chain length of the glycoside emulsifier is 12-20, and the anionic emulsifier is selected from at least one of glyceryl stearate citrate, potassium cetyl phosphate, sodium stearoyl glutamate and sodium methyl stearoyl taurate.

[0044] The sunscreen cosmetic has the poly C 10 ~C 30 The synergistic effect of the alkyl alcohol acrylate, the specific long chain fatty alcohol, the anionic emulsifier and the glycoside emulsifier, on one hand, the specific long chain fatty alcohol and the poly C 10 ~C 30 The acrylate group of the alkyl alcohol acrylate has strong van der Waals force, which is beneficial to promote the poly C 10 ~C 30 The alkyl alcohol acrylate forms specific and uniform crystal structure, so that the emulsion droplets in the sunscreen cosmetic have irregular shape, and further increase the number of light refraction and the optical path, increase the contact opportunity of the ultraviolet rays and the sunscreen agent, significantly improve the utilization rate of the sunscreen agent, and at the same time, it is beneficial to improve the surface energy of the emulsion droplets, thereby increasing the film forming area and the film forming speed of the sunscreen agent, and improving the sunscreen effect; on the other hand, the anionic emulsifier and the glycoside emulsifier can improve the compatibility with the poly C 10 ~C 30 The compatibility of the alkyl alcohol acrylate and the long chain fatty alcohol increases the interaction between the interface film of the emulsion droplets and the crystal, and the anionic emulsifier can also improve the Zeta potential of the interface film, increase the repulsion between the emulsion droplets, and reduce the aggregation of the emulsion droplets, so as to improve the stability of the interface film of the emulsion droplets and the compatibility with other cosmetic ingredients, and further make the sunscreen cosmetic have excellent thermal stability.

[0045] In addition, by adjusting the mass fraction of the anionic emulsifier, the glycoside emulsifier and the poly C 10 ~C 30 The alkyl alcohol acrylate and the long chain fatty alcohol effectively realize the stable emulsion droplet interface film and prevent demulsification, while avoiding the excessive strength of the interface film, so as to protect the poly C 10 ~C 30 The alkyl alcohol acrylate forms stable and uniform irregular crystals, and further improves the sunscreen effect and the sunscreen agent utilization rate of the sunscreen cosmetic.

[0046] By setting the mass ratio of the long chain fatty alcohol and the poly C 10 ~C 30 The mass ratio of the alkyl alcohol acrylate and the poly C 10 ~C 30The crystallization amount and uniformity of the alkyl alcohol acrylate promotes the formation of irregularly shaped emulsion droplets.

[0047] In the present application, the poly-C 10 ~C 30 The alkyl alcohol acrylate is selected from at least one of octadecyl-modified acrylate homopolymer and docosyl-modified acrylate homopolymer, so that different crystallinities are achieved under the action of octadecyl-modified acrylate groups and / or docosyl-modified acrylate groups, thereby changing the shape of the emulsion droplets, and effectively reducing the oiliness brought by sunscreen agents and improving the dryness of sunscreen cosmetics.

[0048] In the present application, the carbon chain length of the long-chain fatty alcohol is 14-22, which is conducive to promoting the poly-C 10 ~C 30 The alkyl alcohol acrylate forms a specific and uniform crystal structure, thereby changing the shape of the emulsion droplets.

[0049] Specifically, the long-chain fatty alcohol is selected from at least one of myristyl alcohol, cetyl alcohol, stearyl alcohol, arachidyl alcohol, and behenyl alcohol.

[0050] In the present application, the carbon chain length of the glycoside emulsifier is 12-20, which further improves the alkyl chain and the poly-C 10 ~C 30 The compatibility of the alkyl alcohol acrylate and the long-chain fatty alcohol increases the interaction between the emulsion droplet interface film and the crystal to ensure the stability of the interface film, at the same time, is conducive to improving the mildness of sunscreen cosmetics to the skin, reducing the irritation to the epidermis, mucous membrane and living cells, and strengthening the skin barrier function and moisturizing effect.

[0051] Specifically, the glycoside emulsifier is selected from at least one of cocoyl glucoside, myristyl glucoside, cetyl stearyl glucoside, and arachidyl glucoside.

[0052] In order to further improve the interface stability of the emulsion droplets and prevent demulsification, the anionic emulsifier of the present application can be selected from at least one of glyceryl stearate citrate, potassium cetyl phosphate, sodium stearoyl glutamate, sodium methyl stearoyl taurate, and sodium di(lauroamidoglutamate) lysine, so as to be conducive to increasing the Zeta potential of the emulsion droplet interface film, increasing the repulsion between the emulsion droplets to reduce the aggregation of the emulsion droplets, improving the stability of the emulsion droplets, and having less irritation to the skin, better compatibility with the skin and other cosmetic ingredients, being conducive to improving the emulsification effect and spreading property of sunscreen cosmetics, and being conducive to improving the pH applicability and thermal stability of sunscreen cosmetics.

[0053] The sunscreen cosmetic of the present application has stable and uniform irregular emulsion droplets, effectively improves the sunscreen effect and sunscreen agent utilization rate, and has good film forming effect, spreading property, mildness and dryness, and has a wide market prospect.

[0054] In an embodiment, the mass fraction of the sunscreen composition in the sunscreen cosmetic is 1% to 4%.

[0055] In an embodiment, the mass ratio of the sunscreen composition to the sunscreen agent is 1:2 to 1:10.

[0056] Specifically, the mass fraction of the sunscreen agent in the sunscreen cosmetic is 8% to 20%, which is conducive to reducing the addition amount of the sunscreen agent while ensuring the sunscreen effect, thereby improving the skin feel and application effect of the sunscreen cosmetic.

[0057] The present application does not limit the selection of sunscreen agents, which can be selected from any one or a combination of organic sunscreen agents and inorganic sunscreen agents. Optionally, the sunscreen agent is selected from at least one of ethylhexyl triazone, bis-ethylhexyloxyphenol methoxyphenyl triazine, methoxyphenyl ethylhexyl ester, diethylaminohydroxybenzoyl hexyl benzoate, 2-cyano-3,3-diphenyl acrylate-2-ethylhexyl ester, 3,3,5-trimethylcyclohexane salicylate, ethylhexyl salicylate, butyl methoxydibenzoylmethane, titanium dioxide and zinc oxide.

[0058] It should be noted that the present application does not have special restrictions on the type of sunscreen cosmetic, such as lotion, emulsion, cream, gel, gel cream, foam, spray and stick, etc. It can be understood that when the type of sunscreen cosmetic is different, other auxiliary materials are also included in the sunscreen cosmetic system, which is not limited by the present application, such as emollients, emulsifiers, moisturizers, fillers, thickeners, pH adjusters, preservatives, antioxidants, skin conditioners, dispersants, fragrances and deionized water, etc.

[0059] In an embodiment, the irregularity of the emulsion droplets in the sunscreen cosmetic is ≥80%.

[0060] It should be noted that the irregularity of the emulsion droplets described in the present application is represented as the number of non-spherical emulsion droplets in the emulsion droplets with a diameter greater than 1 μm.

[0061] The present application also provides a preparation method of the sunscreen cosmetic as described above, comprising the following steps: under heating conditions, the sunscreen composition is first mixed with an oil phase solution, and then a water phase solution is added for second mixing to obtain a mixture, wherein the oil phase solution at least includes a sunscreen agent; the mixture is cooled to obtain the sunscreen cosmetic.

[0062] In the above preparation method, the sunscreen composition is mixed with the oil phase solution under heating conditions, then the water phase solution is added for mixing, and the mixture is cooled, wherein the poly C 10 ~C 30 The alkyl alcohols propenyl ester is precipitated and crystallized under the action of long-chain fatty alcohols similar to the side-chain molecular structure thereof as the temperature of the system decreases, and the shape of the emulsion droplets is changed in a targeted manner through the stabilizing effect of the anionic emulsifier and the glycoside emulsifier, so that the sunscreen cosmetic with irregularly shaped emulsion droplets is obtained.

[0063] In an embodiment, the temperature of the heating conditions is 75-85°C.

[0064] In an embodiment, the rotation speed of the first mixing is 260-800 rpm, and the time is 5-15 min.

[0065] In an embodiment, the rotation speed of the second mixing is 4000-8000 rpm, and the time is 3-8 min.

[0066] It should be noted that the temperature of the first mixing and the second mixing is independently selected from 75-85°C, and can be the same or different; the cooling method is not particularly limited in the present application, for example, water bath cooling or natural cooling, and the like, and cooling to room temperature is sufficient.

[0067] Hereinafter, the sunscreen composition, the sunscreen cosmetic, and the preparation method thereof are further described through the following specific examples.

[0068] The water phase solution, the oil phase solution, and the sunscreen composition of a specific formula are prepared, the water phase raw materials are dispersed and stirred at 75°C by IKA RW 20 DIGITAL to prepare the water phase solution, and the stirring speed is 1000 rpm, the oil phase raw materials are dispersed and stirred at 78°C by IKA RW 20 DIGITAL, and the stirring speed is 260 rpm to prepare the oil phase solution; the sunscreen composition is mixed uniformly, then the oil phase solution is added, mixed at 78°C and 500 rpm by IKA RW 20 DIGITAL for 15 min until completely dissolved, then the water phase solution is added, and the homogenization mixing is performed at 8000 rpm by IKA T25 DIGITAL ULTRA TURRAX equipment for 7 min, then the temperature is slowly reduced to 30°C by water bath stirring, and the sunscreen cosmetic is obtained. In the examples, the raw material formula is shown in Table 1, and in the comparative examples, the raw material formula is shown in Table 2.

[0069] Table 1

[0070] Table 2

[0071] In Table 1 and Table 2, Acrylates / C 10 ~C 30 Alkyl alcohol acrylate crosspolymer is TR-1 of Lubrizol Advanced Materials, CAS No. 138789-85-2; Poly C 10 ~C 30 Alkyl alcohol acrylate is TEGO SP 13SUN UP MB of EVONIK, CAS No. 25703-24-6; The formulation of Montanov L of SEPPIC S.A. is C 12 ~C 20 Alkyl glucoside: C 14 ~C 22 Fatty alcohol = 1:4 (mass ratio); The formulation of Montanov 68 MB of SEPPIC S.A. is Cetyl Stearyl Glucoside: Cetyl Stearyl Alcohol = 1:4 (mass ratio); The formulation of Montanov S of SEPPIC S.A. is Coco Glucoside: Coco Alcohol = 2:1 (mass ratio), wherein the carbon chain length of the coco alcohol is 12; Acrylates / trimethylsiloxymethacrylate copolymer (and) laureth-1 phosphate is FA 4103 Silicone Acrylate Emulsion of Dow.

[0072] The sunscreen cosmetics prepared from all the examples and comparative examples are tested, and the test indexes and methods are as follows.

[0073] (1) Emulsion droplet irregularity: The morphology of the emulsion droplets of the sunscreen cosmetic is observed by Labomed microscope, and the number ratio of the non-spherical emulsion droplets in the emulsion droplets with a diameter greater than 1 μm is calculated as the irregularity.

[0074] (2) Sunscreen effect: According to ISO 24443:2021 in vitro sunscreen test method, the in vitro SPF value and PA value are tested by UV-2000S of Labsphere.

[0075] (3) Film forming speed and film forming area: The film forming speed and film forming area of the sunscreen cosmetic are observed by Labomed microscope, 1% of β-carotene is added in the oil phase solution of the sunscreen cosmetic to be tested, and 1% of blue water-soluble pigment is added in the aqueous solution for dyeing, the dyed sunscreen cosmetic is uniformly coated on the glass slide by the finger wearing a finger cot at 2 mg / cm 2 The change in the morphology of the emulsion droplets is observed immediately under the microscope, and the film forming area is observed after 2 h.

[0076] The emulsion droplet irregularity and sunscreen effect test results of the sunscreen cosmetics of all examples and comparative examples are shown in Table 3.

[0077] Table 3

[0078] As can be seen from the test results in Table 3, under the same test conditions, the emulsion droplet irregularity of all examples is more than 83%, and the in-vitro SPF value is more than 50, and the PA value is more than 9.5, while the emulsion droplet irregularity, in-vitro SPF value and PA value of all comparative examples are significantly lower than those of all examples.

[0079] The emulsion droplet morphology of the sunscreen cosmetics of all examples and comparative examples is shown in Figures 1 to 15, and it can be seen that the emulsion droplets of all examples present a clear irregular shape, i.e. non-spherical, while the emulsion droplets in the comparative examples are mainly spherical; the film forming speed and film forming area of Example 1, Comparative Example 1, Comparative Example 5 and Comparative Example 6 can be seen from Figures 16 to 23, wherein Example 1, Comparative Example 5 and Comparative Example 6 have a faster film forming speed and a larger film forming area compared to Comparative Example 1 due to the addition of the film forming agent, and there are significantly more emulsion droplets that have not broken after the application of Comparative Example 1, and although some of the emulsion droplets of Comparative Example 5 and Comparative Example 6 have broken, they have not immediately formed a continuous sunscreen film, while Example 1 has immediately formed a relatively continuous sunscreen film after application, and at the same time, some of the emulsion droplets in the sunscreen film still maintain an irregular morphology, so that Example 1 has excellent sunscreen power; and after 2h of application, the film forming area of Comparative Example 5, Comparative Example 6 and Example 1 is large, but only a small amount of irregular emulsion droplets still exist in Example 1, further indicating that the improvement in sunscreen effect brought about by the sunscreen composition is not only due to the film forming effect of the film forming agent, but also related to the irregular shape of the emulsion droplets.

[0080] In summary, the sunscreen cosmetics prepared from the sunscreen composition of the present application have stable and uniform irregular emulsion droplets, effectively improving the sunscreen effect and sunscreen agent utilization rate, and the sunscreen cosmetics have good film forming effect, spreading property, mildness and dryness, and have a wide market prospect.

[0081] The technical features of the above-described examples can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described examples are described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0082] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific and detailed manner, but should not be construed as limiting the scope of the patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are all within the scope of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A sunscreen cosmetic, characterized by comprising: The sunscreen cosmetic includes a sunscreen composition and a sunscreen agent, the sunscreen composition includes an anionic emulsifier, a glycoside emulsifier, a long-chain fatty alcohol, and a poly-C 10 ~C 30 alkyl acrylate, and in the sunscreen cosmetic, the content of the anionic emulsifier is 0.1wt%-0.4wt%, the content of the glycoside emulsifier is 0.12wt%-0.48wt%, the content of the long-chain fatty alcohol is 0.48wt%-1.92wt%, and the content of the poly-C 10 ~C 30 alkyl acrylate is 0.4wt%-0.8wt%, and the mass ratio of the glycoside emulsifier to the long-chain fatty alcohol is 1:

4. wherein the poly C 10 ~C 30 The alkyl alcohol acrylate is selected from at least one of octadecyl-modified acrylate homopolymer and docosyl-modified acrylate homopolymer, the carbon chain length of the long-chain fatty alcohol is 14-22, the carbon chain length of the glycoside emulsifier is 12-20, and the anionic emulsifier is selected from at least one of glyceryl stearate citrate, potassium cetyl phosphate, sodium stearoyl glutamate, and sodium methyl stearoyl taurate.

2. The sunscreen cosmetic according to claim 1, characterized by The long-chain fatty alcohol is selected from at least one of myristyl alcohol, cetyl alcohol, stearyl alcohol, arachidyl alcohol, and behenyl alcohol. And / or, the glycoside emulsifier is selected from at least one of coco-glucoside, myristyl glucoside, cetearyl glucoside, and arachidyl glucoside.

3. The sunscreen cosmetic according to claim 1, characterized by The mass ratio of the sunscreen composition to the sunscreen agent is 1:2 to 1:

10.

4. The sunscreen cosmetic according to claim 1, characterized by The sunscreen agent is selected from at least one of ethylhexyl triazone, bis-ethylhexyloxyphenol methoxyphenyl triazine, methoxy-cinnamic acid ethylhexyl ester, diethylamino hydroxybenzoyl hexyl benzoate, 2-cyano-3,3-diphenyl acrylate-2-ethylhexyl ester, 3,3,5-trimethylcyclohexane salicylate, ethylhexyl salicylate, butyl methoxydibenzoylmethane, titanium dioxide, and zinc oxide.

5. The sunscreen cosmetic according to claim 1, wherein The irregularity of the emulsion droplets in the sunscreen cosmetic is ≥80%.

6. A method for producing the sunscreen cosmetic according to any one of claims 1 to 5, characterized by, The method comprises the following steps: After the first mixing of the sunscreen composition and the oil phase solution under heating conditions, the aqueous phase solution is added for the second mixing, to obtain a mixture, wherein the oil phase solution at least comprises a sunscreen agent; After the mixture is cooled, the sunscreen cosmetic is obtained.

7. The method for producing a sunscreen cosmetic according to claim 6, characterized by, The temperature of the heating conditions is 75°C to 85°C; And / or, the rotation speed of the first mixing is 260 rpm to 800 rpm, and the time is 5 min to 15 min; And / or, the rotation speed of the second mixing is 4000 rpm to 8000 rpm, and the time is 3 min to 8 min.

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