Sunscreen synergistic composition and application thereof

Abstract

The invention relates to a sunscreen synergistic composition and application thereof.The sunscreen synergistic composition is composed of an emollient, a dispersing agent and an emulsifying agent, the emollient, the dispersing agent and the emulsifying agent are all selected from specific components, all the components in the sunscreen synergistic composition cooperate with one another, the sunscreen synergistic composition is applied to a sunscreen cosmetic composition, and the sunscreen cosmetic composition has the good sunscreen effect. The sunscreen cosmetic composition has high SPF and excellent skin feeling, in addition, the sunscreen cosmetic composition provided by the invention also has excellent dosage form stability, and when the sunscreen cosmetic composition is a shake-shake dosage form sunscreen product, the shake-shake dosage form sunscreen product can be kept in a uniform state for a long time after being shaken up.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, in particular to a sunscreen synergistic composition and application thereof. Background Art

[0002] With the popularization of the concept of sun protection, people have higher and higher requirements for sunscreen products. On the basis of high sun protection, consumers also hope that the skin feels fresh and breathable, not fake white, and not greasy, so as to facilitate daily use. The simplest and most effective way to increase the sun protection index is to increase the amount of sunscreen added, but most sunscreens are oil-soluble substances and are accompanied by irritation or photosensitivity. With the addition of high-concentration sunscreen, not only will the skin feel greasy, it may also cause skin sensitivity, and excessive addition of sunscreen is also prohibited by laws and regulations of various countries.

[0003] Sunscreen enhancement is to achieve higher sunscreen ability through some methods while minimizing the amount of sunscreen. Developing a sunscreen enhancement composition and applying it to sunscreen cosmetics will not only help sunscreen lotions, creams and other dosage forms to achieve both high sun protection index and refreshing skin feel, but will also be very beneficial to the stability of the dosage form of sunscreen products. Summary of the invention

[0004] Based on this, it is necessary to provide a sunscreen synergistic composition and its application to address the above problems. Applying the sunscreen synergistic composition to a sunscreen cosmetic composition can enable the sunscreen cosmetic composition to have high SPF, excellent skin feel and dosage form stability.

[0005] The present invention discloses a sunscreen synergistic composition, comprising an emollient, a dispersant and an emulsifier, wherein the emollient is selected from C 12-15 The present invention relates to a polyol comprising at least one of butylene glycol dicaprylate / dicaprate, butylene glycol dicaprylate / dicaprate, dibutyl adipate, diisopropyl sebacate, diisopropyl adipate, coconut oil caprylate / caprate, isononyl isononanoate, dicaprylyl carbonate, isopropyl palmitate or butylene glycol dicaprylate / dicaprate, the dispersant comprises at least one of polyhydroxystearic acid, ethylhexyl polyhydroxystearate, butyloctanol salicylate, isooctyl palmitate, hydroxystearic acid or phosphate, the emulsifier comprises at least one of lauryl PEG-10 tri(trimethylsiloxy)silylethyl polydimethicone, PEG-9 polydimethylsiloxyethyl polydimethicone, polyglyceryl-4 isostearate, polyglyceryl-3 polydimethylsilyl hydroxyethyl polydimethicone, cetyl PEG / PPG-10 / 1 polydimethicone or polyglyceryl stearate.

[0006] In one embodiment, the mass ratio of the emollient to the dispersant is 15:0.5-2:2, and the mass ratio of the emollient to the emulsifier is 15:0.1-2:5.

[0007] In one embodiment, the emollient is composed of C 12-15 It is composed of alcohol benzoate and dibutyl adipate.

[0008] In one embodiment, the C 12-15 The mass ratio of alcohol benzoate to dibutyl adipate is 7:1-1:8.

[0009] A sunscreen cosmetic composition comprises the above-mentioned sunscreen synergistic composition.

[0010] In one embodiment, the mass fraction of the sunscreen synergistic composition in the sunscreen cosmetic composition is 5%-14%.

[0011] In one embodiment, after the sunscreen cosmetic composition is homogenized at 4000 rpm for 5 minutes, the backscattered light intensity change rate within 1 hour is less than or equal to 12.5%.

[0012] In one embodiment, the sunscreen cosmetic composition further includes a chemical sunscreen, a physical sunscreen and a base oil.

[0013] In one embodiment, the sunscreen cosmetic composition satisfies at least one of the following conditions:

[0014] (1) The chemical sunscreen includes at least one of ethylhexyl methoxycinnamate, a mixture of ethylhexyl methoxycinnamate and butylated hydroxytoluene, isoamyl p-methoxycinnamate, homosalate, diethylaminohydroxybenzoyl hexyl benzoate, dimethyl PABA ethylhexyl ester, ethylhexyl salicylate, octocrylene, 3-benzylidene camphor, 4-methylbenzylidene camphor, polyacrylamide methylbenzylidene camphor, ethylhexyl triazone, diethylhexyl butyramido triazone, butyl methoxydibenzoylmethane, methylene bis-benzotriazolyl tetramethylbutylphenol, polysilicone-15, drometrizole trisiloxane or bis-ethylhexyloxyphenol methoxyphenyl triazine;

[0015] (2) The physical sunscreen comprises at least one of TiO2 or ZnO;

[0016] (3) The base oil comprises at least one of caprylic / capric triglyceride, cyclopentasiloxane or polydimethylsiloxane;

[0017] (4) The mass fraction of the chemical sunscreen in the sunscreen cosmetic is 1%-30%;

[0018] (5) The mass fraction of the physical sunscreen agent in the sunscreen cosmetic is 1%-25%.

[0019] In one embodiment, the sunscreen cosmetic composition further comprises an aqueous phase, wherein the aqueous phase comprises a solvent and a water-soluble component.

[0020] The sunscreen synergistic composition provided by the present invention comprises a specific emollient, a dispersant and an emulsifier. The components in the sunscreen synergistic composition cooperate with each other. When the sunscreen synergistic composition is applied to a sunscreen cosmetic composition, firstly, the specific emollient can well dissolve the organic sunscreen and disperse the physical sunscreen, especially C 12-15 Alcohol benzoate not only has a very delicate and comfortable skin feel, but also can dissolve organic sunscreens and disperse physical sunscreens very well. Dibutyl adipate containing highly active ester groups is easily adsorbed on the surface of physical sunscreens to form a lubricant film, thereby improving the dispersion performance of physical sunscreens, thereby reducing whitening, improving skin feel, and playing a synergistic role in SPF, improving the dosage form stability of the sunscreen cosmetic composition; secondly, specific dispersants can further enhance the dispersion effect of the sunscreen synergistic composition on physical sunscreens, thereby reducing the mass fraction of the emulsifier in the sunscreen cosmetic composition to less than 5%, avoiding the greasy and heavy skin feel caused by high amounts of emulsifiers. In addition, specific emulsifiers have good safety and strong compounding ability. The unique dendritic structure can not only prepare smaller emulsion particle size, bringing a light skin feel, but also facilitate powder dispersion, further improving the SPF of the sunscreen cosmetic composition.

[0021] Thus, the sunscreen cosmetic composition has high SPF, excellent skin feel and dosage form stability. For example, when the sunscreen cosmetic composition is a shaker dosage form sunscreen product, the shaker dosage form sunscreen product after being shaken can remain mixed for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a microscopic image of the sunscreen cosmetic composition prepared in Example 1 and Comparative Examples 1-7 in Test Example 1;

[0024] Figure 2 The SEM images of Ti element distribution on the leather surface of the sunscreen cosmetic compositions prepared in Example 1, Comparative Examples 1-3 and Application Example 1 in Test Example 2;

[0025] Figure 3The OCT scans before and after using the sunscreen cosmetic compositions prepared in Example 1, Comparative Example 1 and Application Example 1 in Test Example 2;

[0026] Figure 4 This is a graph showing the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Example 1 in Test Example 2 within 1 hour;

[0027] Figure 5 This is a graph showing the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Comparative Example 1 in Test Example 2 within 1 hour;

[0028] Figure 6 This is a graph showing the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Comparative Example 2 in Test Example 2 within 1 hour;

[0029] Figure 7 This is a graph showing the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Comparative Example 3 in Test Example 2 within 1 hour;

[0030] Figure 8 This is a graph showing the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Application Example 1 in Test Example 2 within 1 hour;

[0031] Fig. 9 It is a microscopic image of the sunscreen cosmetic composition prepared in Examples 2-7 in Test Example 3. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the embodiments or examples described herein. On the contrary, the purpose of providing these embodiments or examples is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the terminology of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific implementation methods or embodiments and are not intended to limit the present invention.

[0034] The sunscreen synergistic composition provided by the present invention is composed of a specific emollient, a dispersant and an emulsifier. The components in the sunscreen synergistic composition work together. When the sunscreen synergistic composition is applied to a sunscreen cosmetic composition, the sunscreen cosmetic composition has high SPF, excellent skin feel and dosage form stability.

[0035] First, emollients include C 12-15At least one of benzoic acid ester, dibutyl adipate, diisopropyl sebacate, diisopropyl adipate, coconut oil alcohol caprylate / caprate, isononyl isononanoate, dicaprylyl carbonate, isopropyl palmitate or butylene glycol dicaprylate / dicaprate. The emollient can dissolve organic sunscreens and disperse physical sunscreens well, especially C 12-15 Alcohol benzoate not only has a very delicate and comfortable skin feel, but also can dissolve organic sunscreens and disperse physical sunscreens very well. Dibutyl adipate containing highly active ester groups is easily adsorbed on the surface of physical sunscreens to form a lubricant film, thereby improving the dispersion performance of physical sunscreens, thereby reducing whitening, improving skin feel, and playing a synergistic role in SPF, thereby improving the dosage form stability of the sunscreen cosmetic composition; therefore, preferably, the emollient is C 12-15 It is composed of alcohol benzoate and dibutyl adipate.

[0036] In one embodiment, C 12-15 The mass ratio of alcohol benzoate to dibutyl adipate is 7:1-1:8, including but not limited to 7:1, 6:2, 5:3, 4:4, 3.2:4, 3.2:3, 3.2:2.5, 3.2:2, 3.2:1, 2:7 or 1:8, so as to better improve the dispersibility of the emollient on the physical sunscreen.

[0037] Secondly, the dispersant includes at least one of polyhydroxystearic acid, ethylhexyl polyhydroxystearate, butyl octanol salicylate, isooctyl palmitate, hydroxystearate or phosphate. The specific dispersant can further enhance the dispersing effect of the sunscreen synergistic composition on the physical sunscreen, thereby reducing the mass fraction of the emulsifier in the sunscreen cosmetic composition to less than 5%, avoiding the greasy and heavy skin feel caused by high dosage of emulsifier; preferably, the dispersant is polyhydroxystearic acid or butyl octanol salicylate.

[0038] Again, the emulsifier includes at least one of lauryl PEG-10 tris(trimethylsiloxy)silylethyl polydimethicone, PEG-9 polydimethylsiloxyethyl polydimethicone, polyglyceryl-4 isostearate, polyglyceryl-3 polydimethylsilylhydroxyethyl polydimethicone, cetyl PEG / PPG-10 / 1 polydimethicone or polyglyceryl stearate. The above emulsifiers have good safety and strong compounding ability. The unique dendritic structure can not only prepare smaller emulsion particle size and bring a light skin feel, but also is conducive to powder dispersion, further improving the SPF of the sunscreen cosmetic composition; preferably, the emulsifier is lauryl PEG-10 tris(trimethylsiloxy)silylethyl polydimethicone or polyglyceryl-4 isostearate.

[0039] Thus, the components in the sunscreen synergistic composition work synergistically with each other, so that the sunscreen cosmetic composition has both high SPF and excellent skin feel.

[0040] In addition, the sunscreen cosmetic composition provided by the present invention also has excellent formulation stability. For example, when the sunscreen cosmetic is a shaker formulation sunscreen product, the shaker formulation sunscreen product after being shaken can maintain a mixed state for a long time; in one embodiment, when the sunscreen cosmetic composition is homogenized at 4000 rpm for 5 minutes, the backscattered light intensity change rate within 1 hour is less than or equal to 12.5%. It can be understood that the shaker formulation sunscreen product is a sunscreen cosmetic product obtained by mixing an oil phase and an aqueous phase, and needs to be shaken before use.

[0041] In one embodiment, the mass ratio of the emollient to the dispersant is 15:0.5-2:2, including but not limited to 15:0.2, 11.1:0.5, 7.2:0.7, 7.2:0.8, 7.2:0.9, 7.2:2, 6.7:0.8, 4.2:0.8, 4.5:1.4, 3.25:1.7 or 2:2. Preferably, the mass ratio of the emollient to the dispersant is 7.2:0.9-7.8:0.7. Further preferably, the mass ratio of the emollient to the dispersant is 7.2:0.7-7.2:0.9.

[0042] In one embodiment, the mass ratio of the emollient to the emulsifier is 15:0.1-2:5, including but not limited to 15:0.1, 11.1:0.55, 7.2:5, 7.2:1.1, 7.2:1, 7.2:0.9, 4.5:3 or 2:5. Preferably, the mass ratio of the emollient to the emulsifier is 7.2:0.5-7.2:1.5. Further preferably, the mass ratio of the emollient to the emulsifier is 7.2:1.1-7.2:0.9.

[0043] In one embodiment, the mass fraction of the emulsifier in the sunscreen synergistic composition is 0.1%-5%, including but not limited to 0.1%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%, so that the sunscreen cosmetic composition has a higher SPF and a better skin feel.

[0044] The present invention also provides a sunscreen cosmetic composition, which comprises the above-mentioned sunscreen synergistic composition.

[0045] In one embodiment, the mass fraction of the sunscreen enhancing composition in the sunscreen cosmetic composition is 5%-14%, including but not limited to 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13% or 14%.

[0046] In one embodiment, the sunscreen cosmetic composition further includes a chemical sunscreen, a physical sunscreen and a base oil.

[0047] In one embodiment, the chemical sunscreen includes at least one of ethylhexyl methoxycinnamate, a mixture of ethylhexyl methoxycinnamate and butylated hydroxytoluene, isoamyl p-methoxycinnamate, homosalate, diethylaminohydroxybenzoyl hexyl benzoate, dimethyl PABA ethylhexyl ester, ethylhexyl salicylate, octocrylene, 3-benzylidene camphor, 4-methylbenzylidene camphor, polyacrylamidemethylbenzylidene camphor, ethylhexyl triazone, diethylhexyl butyramido triazone, butyl methoxydibenzoylmethane, methylene bis-benzotriazolyl tetramethylbutylphenol, polysilicone-15, drometrizole trisiloxane or bis-ethylhexyloxyphenol methoxyphenyl triazine; preferably, the mass fraction of the chemical sunscreen in the sunscreen cosmetic composition is 1%-30%, including but not limited to 1%, 5%, 10%, 15%, 20%, 25% or 30%.

[0048] In one embodiment, the physical sunscreen comprises at least one of TiO2 or ZnO; preferably, the mass fraction of the physical sunscreen in the sunscreen cosmetic composition is 1%-25%, including but not limited to 1%, 5%, 10%, 15%, 20% or 25%.

[0049] In one embodiment, the base oil includes at least one of caprylic / capric triglyceride, cyclopentasiloxane or dimethicone.

[0050] At this time, the preparation method of the sunscreen cosmetic composition comprises the following steps:

[0051] S10, providing the above-mentioned sunscreen synergistic composition;

[0052] S20, adding a chemical sunscreen and a base oil to the sunscreen synergistic composition, and heating the mixture to obtain a mixed solution;

[0053] S30, adding a physical sunscreen agent to the mixed solution, and homogenizing to obtain a sunscreen cosmetic composition.

[0054] In one embodiment, the sunscreen cosmetic composition also includes an aqueous phase, wherein the aqueous phase includes a solvent and a water-soluble component; in this case, the obtained sunscreen cosmetic composition is a shake-type sunscreen product, specifically, the solvent includes but is not limited to water and alcohol solvents, and the water-soluble components include but are not limited to magnesium sulfate, moisturizers and antioxidants.

[0055] Hereinafter, the sunscreen synergistic composition and its application will be further described through the following specific examples.

[0056] Example 1

[0057] Example 1 provides a sunscreen synergistic composition and a sunscreen cosmetic composition made using the sunscreen synergistic composition.

[0058] After drying, add C 12-15 3.2 g of alcohol benzoate, 0.8 g of polyhydroxystearic acid, 4 g of dibutyl adipate, and 1 g of lauryl PEG-10 tri(trimethylsiloxy)silylethyl polydimethicone were mixed uniformly to obtain a sunscreen synergistic composition.

[0059] To the sunscreen synergistic composition, add chemical sunscreen agents ethylhexyl methoxycinnamate 8 g, homosalate 6 g, diethylaminohydroxybenzoyl hexyl benzoate 4 g, ethylhexyl salicylate 4 g, and octocrylene 2 g, and then add base oil caprylic / capric triglyceride to a total mass of the mixture of 98 g, and stir the mixture in a water bath at 60° C. for 10 min to dissolve to obtain a mixed solution.

[0060] The mixed solution was cooled to room temperature, and then 2 g of TiO2 was added and homogenized for 5 minutes to obtain a sunscreen cosmetic composition.

[0061] Application Example 1

[0062] The sunscreen synergistic composition prepared in Example 1 was used as a raw material to prepare a sunscreen cosmetic composition (a shaker-type sunscreen product), and the specific steps included:

[0063] Water phase mixing process: add water, butanediol, 1,2-hexanediol, ethanol, magnesium sulfate, moisturizer, antioxidant and other water-soluble ingredients into the emulsifier, then heat, stir and disperse evenly to obtain a colorless, transparent, viscous liquid emulsifier material;

[0064] Oil phase mixing step: adding ethylhexyl methoxycinnamate, homosalate, diethylaminohydroxybenzoyl ethyl benzoate, ethylhexyl salicylate, octocrylene, titanium dioxide, filler, suspending agent, skin conditioner, essence, oil and the sunscreen synergistic composition provided in Example 1 into an oil pan, followed by heating, stirring and dispersing uniformly to obtain oil phase pan material;

[0065] Finished product process: Pump the oil pan material into the emulsifying pan, start homogenizing, disperse evenly and then cool to room temperature to obtain the sunscreen lotion.

[0066] Comparative Example 1

[0067] After drying, add C 12-15 3.2 g of alcohol benzoate, 0.8 g of polyhydroxystearic acid, and 4 g of dibutyl adipate were mixed uniformly to obtain a sunscreen synergistic composition.

[0068] To the sunscreen synergistic composition, add chemical sunscreen agents ethylhexyl methoxycinnamate 8 g, homosalate 6 g, diethylaminohydroxybenzoyl hexyl benzoate 4 g, ethylhexyl salicylate 4 g, and octocrylene 2 g, and then add base oil caprylic / capric triglyceride to a total mass of the mixture of 98 g, and stir the mixture in a water bath at 60° C. for 10 min to dissolve to obtain a mixed solution.

[0069] The mixed solution was cooled to room temperature, and then 2 g of TiO2 was added and homogenized for 5 minutes to obtain a sunscreen cosmetic composition.

[0070] Comparative Example 2

[0071] After drying, add C 12-15 3.2 g of alcohol benzoate, 0.8 g of polyhydroxystearic acid, and 1 g of lauryl PEG-10 tri(trimethylsiloxy)silylethyl polydimethicone were mixed uniformly to obtain a sunscreen synergistic composition.

[0072] To the sunscreen synergistic composition, add chemical sunscreen agents ethylhexyl methoxycinnamate 8 g, homosalate 6 g, diethylaminohydroxybenzoyl hexyl benzoate 4 g, ethylhexyl salicylate 4 g, and octocrylene 2 g, and then add base oil caprylic / capric triglyceride to a total mass of the mixture of 98 g, and stir the mixture in a water bath at 60° C. for 10 min to dissolve to obtain a mixed solution.

[0073] The mixed solution was cooled to room temperature, and then 2 g of TiO2 was added and homogenized for 5 minutes to obtain a sunscreen cosmetic composition.

[0074] Comparative Example 3

[0075] Add 8 g of chemical sunscreen ethylhexyl methoxycinnamate, 6 g of homosalate, 4 g of diethylaminohydroxybenzoyl hexyl benzoate, 4 g of ethylhexyl salicylate, and 2 g of octocrylene, and then add base oil caprylic / capric triglyceride to a total mass of the mixture of 98 g, and stir the mixture in a water bath at 60° C. for 10 min to dissolve to obtain a mixed solution.

[0076] The mixed solution was cooled to room temperature, and then 2 g of TiO2 was added and homogenized for 5 minutes to obtain a sunscreen cosmetic composition.

[0077] Comparative Example 4

[0078] To the dried beaker, add 0.8 g of polyhydroxystearic acid, 4 g of dibutyl adipate, and 1 g of lauryl PEG-10 tris(trimethylsiloxy)silylethyl polydimethicone, and mix well to obtain a sunscreen synergistic composition.

[0079] To the sunscreen synergistic composition, add chemical sunscreen agents ethylhexyl methoxycinnamate 8 g, homosalate 6 g, diethylaminohydroxybenzoyl hexyl benzoate 4 g, ethylhexyl salicylate 4 g, and octocrylene 2 g, and then add base oil caprylic / capric triglyceride to a total mass of the mixture of 98 g, and stir the mixture in a water bath at 60° C. for 10 min to dissolve to obtain a mixed solution.

[0080] The mixed solution was cooled to room temperature, and then 2 g of TiO2 was added and homogenized for 5 minutes to obtain a sunscreen cosmetic composition.

[0081] Comparative Example 5

[0082] Comparative Example 5 was carried out with reference to Example 1, except that C 12-15 Alkyl benzoate was replaced with ethylhexyl stearate.

[0083] Comparative Example 6

[0084] Comparative Example 6 was carried out with reference to Example 1, except that dibutyl adipate was replaced by propylene glycol dicaprylate / dicaprate.

[0085] Comparative Example 7

[0086] Comparative Example 7 was carried out with reference to Example 1, except that polyhydroxystearic acid was replaced with diisostearyl malate.

[0087] Test Example 1

[0088] The microscopic images of the sunscreen cosmetic compositions prepared in Test Example 1 and Comparative Examples 1-7 are shown in Table 1. The specific test method is as follows, and the test results are shown in Table 1. The microscopic images of the sunscreen cosmetic compositions prepared in Test Example 1 and Comparative Examples 1-7 are shown in Table 1. Figure 1 shown.

[0089] Microscopic image: The distribution of TiO2 in the sunscreen cosmetic composition was observed using an OLYMPUS CX33 microscope. If agglomerations were present in the microscopic image, it indicated that TiO2 was unevenly distributed in the sunscreen cosmetic composition.

[0090] Table 1

[0091]

[0092]

[0093] It can be seen from Table 1 that, compared with Comparative Examples 2-7, the TiO2 in the sunscreen cosmetic compositions provided in Example 1 and Comparative Example 1 is evenly distributed.

[0094] Test Example 2

[0095] The SPF value, Ti element distribution, skin roughness improvement value, and formulation stability of the sunscreen cosmetic compositions prepared in Example 1, Comparative Examples 1-3, and Application Example 1 were tested. The specific testing method is shown below, and the test results are shown in Table 2.

[0096] SPF value (in vitro method): The SPF value of the sunscreen cosmetic composition prepared in Example 1 and Comparative Examples 1-3 was tested by an in vitro method. The specific method includes: (1) fixing a PMMA plate on a sample plate; (2) first measuring the background curve of the blank plate, then evenly dotting the sample on the PMMA plate with a spotter, and applying it with a finger with a latex finger cot at a concentration of 2 mg / cm 2 Apply the sample gently and evenly on a 25cm 2 (3) Place the coated sample plate in a dark environment at a temperature of (25±5)°C and a relative humidity of (50±10)% to dry naturally for 20 minutes; (4) Turn on the power and preheat the instrument for 30 minutes. After confirming that it is normal, use the SPF-290AS analyzer to select 6 points on the PMMA plate for testing, draw 6 light wavelength MPF curves, and use the software supporting the instrument to calculate and analyze the SPF value and standard deviation of a test, as well as the sun protection index SPF value of each scanning point; (5) Each sample is coated and tested at least 3 times and the average value is taken.

[0097] SPF value (human body method): The human body method is used to test the SPF value of the sunscreen cosmetic composition (shake-type sunscreen product) prepared in Application Example 1. The specific method includes: testing in accordance with the specific requirements of the "Technical Specification for Safety of Cosmetics" (2015 edition). The subject lies in a prone position and his back is irradiated. The minimum erythema dose (MED value) of the subject's skin to ultraviolet radiation is predicted 24 hours before the test, and the ultraviolet radiation dose is adjusted according to the predicted results for testing the test object. On the day of the test, a spot no less than 30 cm is first selected on the subject's back. 2 Normal skin area, (2.00±0.05)mg / cm 2 The test object or reference substance is evenly applied to the above-mentioned area with the dosage of 100 mg / kg, and then the irradiation dose is selected according to the specification requirements. The irradiation is carried out in three conditions: 1. No test object is applied to the subject's skin; 2. The reference substance is applied; 3. The test object is applied. Observe the experimental results after 24 hours and record the MED values ​​in the three conditions respectively;

[0098] Ti element distribution: The sunscreen cosmetic composition is applied on artificial leather, and the distribution of Ti element in the sunscreen cosmetic composition is observed using a scanning electron microscope. If there are gullies in the scanning electron microscope image, it means that the Ti element is unevenly distributed in the sunscreen cosmetic composition. The SEM images of the Ti element distribution on the leather surface of the sunscreen cosmetic composition prepared in Example 1, Comparative Examples 1-3 and Application Example 1 are as follows: Figure 2 There are grooves in both Comparative Examples 2 and 3, indicating that the Ti element is unevenly distributed in the sunscreen cosmetic compositions prepared in Comparative Examples 2 and 3.

[0099] Skin roughness improvement value (ΔRa): OCT optical coherence tomography was used to measure the skin roughness before and after using the sunscreen cosmetic composition. Skin roughness improvement value (ΔRa) = (skin roughness before application - skin roughness after application) / skin roughness before application. The skin roughness improvement value is used to characterize the film-forming property of the sunscreen cosmetic composition. The greater the skin roughness improvement value, the better the film-forming property of the sunscreen cosmetic composition. The OCT scanning images of the sunscreen cosmetic compositions prepared in Example 1, Comparative Example 1 and Application Example 1 before and after use are as shown in FIG. Figure 3 shown.

[0100] Stability of dosage form: The sunscreen cosmetic composition was homogenized at 4000 rpm for 5 min, and then the backscattered light intensity change rate ΔBS before and after 1 hour was tested using a multiple light scattering instrument. The backscattered light intensity change rate ΔBS was used to characterize the deposition of the sunscreen cosmetic composition within 1 hour. The smaller the ΔBS, the better the stability of the dosage form. The backscattered light intensity change of the sunscreen cosmetic composition prepared in Example 1 within 1 hour is shown in the figure. Figure 4 As shown, the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Comparative Example 1 within 1 hour is shown in FIG. Figure 5 As shown, the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Comparative Example 2 within 1 hour is as shown in Figure 6 As shown, the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Comparative Example 3 within 1 hour is shown in FIG. Figure 7 As shown in FIG. 1 , the backscattered light intensity variation of the sunscreen cosmetic composition prepared in Application Example 1 within 1 hour is shown in FIG. Figure 8 shown.

[0101] Table 2

[0102]

[0103] As can be seen from Table 2, compared with Comparative Example 3, the sunscreen cosmetic composition provided by Example 1 has the best dosage form stability, uniform distribution of Ti elements, and an SPF enhancement of up to 7.93%. It can be seen that there is a synergistic effect between the components in the sunscreen enhancement composition, which can well improve the SPF of the sunscreen cosmetic composition.

[0104] Compared with before using the sunscreen cosmetic composition, after using the sunscreen cosmetic composition of Example 1, the skin roughness is improved by 31.03%, which is much greater than that of Comparative Example 1. It can be seen that after using the sunscreen cosmetic composition provided by Example 1, the sunscreen cosmetic composition forms a complete film, and therefore, the improvement of skin texture roughness is more significant.

[0105] Example 2

[0106] Example 2 was carried out in accordance with Example 1, except that C was added to the dried beaker. 12-15 3.2 g of alcohol benzoate, 0.8 g of polyhydroxystearic acid, 1 g of dibutyl adipate, and 1 g of lauryl PEG-10 tri(trimethylsiloxy)silylethyl polydimethicone were mixed uniformly to obtain a sunscreen synergistic composition.

[0107] Example 3

[0108] Example 3 was carried out in accordance with Example 1, except that C was added to the dried beaker. 12-15 3.2 g of alcohol benzoate, 0.8 g of polyhydroxystearic acid, 2.5 g of dibutyl adipate, and 1 g of lauryl PEG-10 tri(trimethylsiloxy)silylethyl polydimethicone were mixed uniformly to obtain a sunscreen synergistic composition.

[0109] Example 4

[0110] Example 4 was carried out in accordance with Example 1, except that C was added to the dried beaker. 12-15 3.2 g of alcohol benzoate, 2 g of polyhydroxystearic acid, 4 g of dibutyl adipate, and 1 g of lauryl PEG-10 tri(trimethylsiloxy)silylethyl polydimethicone were mixed uniformly to obtain a sunscreen synergistic composition.

[0111] Example 5

[0112] Example 5 was carried out in accordance with Example 1, except that C was added to the dried beaker. 12-15 3.2 g of alcohol benzoate, 0.8 g of polyhydroxystearic acid, 4 g of dibutyl adipate, and 5 g of lauryl PEG-10 tri(trimethylsiloxy)silylethyl polydimethicone were mixed uniformly to obtain a sunscreen synergistic composition.

[0113] Example 6

[0114] Example 6 was carried out in accordance with Example 1, except that polyhydroxystearic acid was replaced with butyloctanol salicylate.

[0115] Example 7

[0116] Example 7 was carried out in accordance with Example 1, except that lauryl PEG-10 tri(trimethylsiloxy)silylethyl dimethicone was replaced with polyglyceryl-4 isostearate.

[0117] Test Example 3

[0118] Referring to Test Example 1, the microscopic images of the sunscreen cosmetic compositions prepared in Examples 2-7 were tested. The test results are shown in Table 3. The microscopic images of the sunscreen cosmetic compositions are shown in Table 3. Fig. 9 shown.

[0119] Table 3

[0120] Microscopic image (100X) Example 2 Uniform Example 3 Uniform Example 4 Uniform Example 5 Uniform Example 6 Uniform Example 7 Uniform

[0121] From Table 3, Fig. 9 It can be seen that, compared with the comparative example, the TiO2 in the sunscreen cosmetic compositions provided in Examples 2-7 is evenly distributed.

[0122] The brands and manufacturer information of the raw materials involved in the present invention are shown in Table 4.

[0123] Table 4

[0124]

[0125] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0126] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A sunscreen synergistic composition, characterized in that: It includes an emollient, a dispersant and an emulsifier, wherein the emollient is selected from C 12-15 The present invention relates to a polyol comprising at least one of butylene glycol dicaprylate / dicaprate, butylene glycol dicaprylate / dicaprate, dibutyl adipate, diisopropyl sebacate, diisopropyl adipate, coconut oil caprylate / caprate, isononyl isononanoate, dicaprylyl carbonate, isopropyl palmitate or butylene glycol dicaprylate / dicaprate, the dispersant comprises at least one of polyhydroxystearic acid, ethylhexyl polyhydroxystearate, butyloctanol salicylate, isooctyl palmitate, hydroxystearic acid or phosphate, the emulsifier comprises at least one of lauryl PEG-10 tri(trimethylsiloxy)silylethyl polydimethicone, PEG-9 polydimethylsiloxyethyl polydimethicone, polyglyceryl-4 isostearate, polyglyceryl-3 polydimethylsilyl hydroxyethyl polydimethicone, cetyl PEG / PPG-10 / 1 polydimethicone or polyglyceryl stearate.

2. The sunscreen synergistic composition according to claim 1, characterized in that: The mass ratio of the emollient to the dispersant is 15:0.5-2:2, and the mass ratio of the emollient to the emulsifier is 15:0.1-2:

5.

3. The sunscreen synergistic composition according to claim 1 or 2, characterized in that: The emollient is composed of C 12-15 It is composed of alcohol benzoate and dibutyl adipate.

4. The sunscreen synergistic composition according to claim 3, characterized in that: The C 12-15 The mass ratio of alcohol benzoate to dibutyl adipate is 7:1-1:

8.

5. A sunscreen cosmetic composition, characterized in that: The invention comprises the sunscreen synergistic composition as described in any one of claims 1 to 4.

6. The sunscreen cosmetic composition according to claim 5, characterized in that: The mass fraction of the sunscreen synergistic composition in the sunscreen cosmetic composition is 5%-14%.

7. The sunscreen cosmetic composition according to claim 5, characterized in that: When the sunscreen cosmetic composition is homogenized at 4000 rpm for 5 minutes, the backscattered light intensity change rate within 1 hour is less than or equal to 12.5%.

8. The sunscreen cosmetic composition according to claim 5, characterized in that: The sunscreen cosmetic composition also includes chemical sunscreens, physical sunscreens and base oils.

9. The sunscreen cosmetic composition according to claim 8, characterized in that: The sunscreen cosmetic composition at least meets at least one of the following conditions: (1) The chemical sunscreen includes at least one of ethylhexyl methoxycinnamate, a mixture of ethylhexyl methoxycinnamate and butylated hydroxytoluene, isoamyl p-methoxycinnamate, homosalate, diethylaminohydroxybenzoyl hexyl benzoate, dimethyl PABA ethylhexyl ester, ethylhexyl salicylate, octocrylene, 3-benzylidene camphor, 4-methylbenzylidene camphor, polyacrylamide methylbenzylidene camphor, ethylhexyl triazone, diethylhexyl butyramido triazone, butyl methoxydibenzoylmethane, methylene bis-benzotriazolyl tetramethylbutylphenol, polysilicone-15, drometrizole trisiloxane or bis-ethylhexyloxyphenol methoxyphenyl triazine; (2) The physical sunscreen comprises at least one of TiO2 or ZnO; (3) The base oil comprises at least one of caprylic / capric triglyceride, cyclopentasiloxane or polydimethylsiloxane; (4) The mass fraction of the chemical sunscreen in the sunscreen cosmetic is 1%-30%; (5) The mass fraction of the physical sunscreen agent in the sunscreen cosmetic is 1%-25%.

10. The sunscreen cosmetic composition according to any one of claims 5 to 9, characterized in that: The sunscreen cosmetic composition further comprises an aqueous phase, wherein the aqueous phase comprises a solvent and water-soluble components.

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