Organic sunscreen gel and preparation method thereof and cosmetics

Abstract

The present application relates to the field of cosmetics, and more specifically, to an organic sunscreen gel and a preparation method thereof. The organic sunscreen gel comprises: an oil phase, a phospholipid phase and an aqueous phase; the oil phase comprises an organic sunscreen, oil and fat-soluble antioxidants; the aqueous phase comprises a water-soluble antioxidant. By compounding the oil phase, the phospholipid phase and the aqueous phase, a gel state having a reverse micelle structure is formed; this gel state structure synergizes fat-soluble antioxidants and water-soluble antioxidants in the same system, greatly increasing the photostability of the organic sunscreen; thereby solving the problem of poor photostability of organic sunscreens in the prior art. Applying the above-mentioned organic sunscreen gel to sunscreen cosmetics can effectively reduce the problem of instability of sunscreen cosmetics, thereby helping to improve the sunscreen effect of sunscreen cosmetics. At the same time, it can achieve a reduction in the content of fat-soluble antioxidants, thereby effectively reducing the irritation of cosmetics.

Description

Technical Field

[0001] The present application relates to the field of cosmetics, and in particular, to an organic sunscreen gel and a preparation method thereof. Background Art

[0002] Organic sunscreens are also called chemical sunscreens. This type of sunscreen is a type of organic compound that has a good absorption effect on ultraviolet rays, also known as ultraviolet absorbers.

[0003] This type of substance can selectively absorb ultraviolet rays. Different molecular structures selectively absorb different bands of ultraviolet rays. Some sunscreens mainly absorb UVB, some mainly absorb UVA, and some sunscreens are broad-spectrum sunscreens that can absorb both UVB and UVA.

[0004] However, when exposed to light, the molecular structure of organic sunscreens will change, and some changes are irreversible. Irreversible changes will cause the organic sunscreen to decompose, which will lead to photodegradation of the organic sunscreen and make it unstable. This will greatly reduce the sunscreen effect of sunscreen cosmetics. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide an organic sunscreen gel and a preparation method thereof.

[0006] The first aspect of the present application provides an organic sunscreen gel, comprising:

[0007] Oil phase, phospholipid phase and water phase;

[0008] The oil phase includes organic sunscreens, oils, and fat-soluble antioxidants;

[0009] The aqueous phase includes a water soluble antioxidant.

[0010] In the above technical scheme, a gel state with a reverse micelle structure is formed by compounding the oil phase, the phospholipid phase and the water phase; this gel state structure synergizes the fat-soluble antioxidants and the water-soluble antioxidants in the same system, greatly increasing the photostability of the organic sunscreen; thereby solving the problem of poor photostability of the organic sunscreen in the prior art.

[0011] Furthermore, applying the above-mentioned organic sunscreen gel to sunscreen cosmetics can effectively reduce the instability problem of sunscreen cosmetics, thereby helping to improve the sunscreen effect of the sunscreen cosmetics.

[0012] Furthermore, the above-mentioned reverse micelle gel encapsulation technology enables the coexistence of organic sunscreens, fat-soluble antioxidants, and water-soluble antioxidants in the same system, thereby achieving the synergistic coordination of fat-soluble antioxidants and water-soluble antioxidants to improve the photostability of organic sunscreens. The above-mentioned technical scheme greatly reduces the amount of fat-soluble antioxidants used compared to the common scheme in the art of using a single fat-soluble antioxidant to improve the photostability of organic sunscreens. However, fat-soluble antioxidants are highly irritating to the skin; therefore, the above-mentioned technical scheme of the present application can reduce the content of fat-soluble antioxidants, thereby effectively reducing the irritation of cosmetics.

[0013] In other embodiments of the present application, the organic sunscreen agent includes: a fat-soluble sunscreen agent.

[0014] In other embodiments of the present application, the organic sunscreen includes: ethylhexyl methoxycinnamate, isopentyl methoxycinnamate, ethylhexyl salicylate, humulose acid, amyl p-dimethylaminobenzoate, butyl methoxydibenzoylmethane, diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxymethoxyphenyl triazine, drometrizole trisiloxane, dibenzophenone-3,4-methylbenzylidene camphor, ethylhexyl triazone, diethylhexyl butyramido triazone, polysilicone 15 or at least one of 2-ethylhexyl 2-nitrile-3,3-diphenylacrylate.

[0015] In other embodiments of the present application, the oil includes one or more of isopropyl myristate, dibutyl adipate, diethylhexyl carbonate, vegetable oil, silicone oil, n-butyl stearate, dicarboxylic acid esters, cycloalkanes, aliphatic hydrocarbons, cetyl oleate or tricaprylin.

[0016] In other embodiments of the present application, the fat-soluble antioxidant includes: one or more of VE, VA, butylated hydroxytoluene, and pentaerythritol tetrakis (di-tert-butyl hydroxyhydrocinnamate).

[0017] In other embodiments of the present application, the water-soluble antioxidant includes one or more of VC, soy isoflavones, green tea polyphenols or caffeic acid.

[0018] In other embodiments of the present application, the phospholipid phase includes one or more of soy lecithin, hydrogenated lecithin or egg yolk phosphatidylcholine.

[0019] In other embodiments of the present application, the organic sunscreen gel comprises, by mass percentage:

[0020] Water phase 0.001%-6%, oil phase 20%-70%, phospholipids 25%-79%.

[0021] In other embodiments of the present application, the oil phase comprises, by mass percentage:

[0022] 3-30% organic sunscreen, 40-70% oil and 2-30% fat-soluble antioxidants.

[0023] In other embodiments of the present application, the oil phase comprises, by mass percentage:

[0024] 17%-25% organic sunscreen, 50%-67% oil and 17%-25% fat-soluble antioxidants.

[0025] In other embodiments of the present application, the aqueous phase comprises, by mass percentage:

[0026] 0.001%-83% water-soluble antioxidant, the balance is water.

[0027] In other embodiments of the present application, the aqueous phase comprises, by mass percentage:

[0028] 0.2%-83% water-soluble antioxidant, the balance is water.

[0029] In a second aspect, the present application provides a method for preparing an organic sunscreen gel, the preparation method comprising:

[0030] The oil phase and the phospholipid phase are dissolved into a uniform solution; under continuous stirring, the aqueous phase is added dropwise into the uniform solution to form a gel structure.

[0031] In the above technical scheme, the above preparation method is adopted, by dissolving the oil phase and the phospholipid phase into a uniform solution; under continuous stirring, the aqueous phase is added dropwise to the uniform solution; the oil phase, the phospholipid phase and the aqueous phase are compounded to form a gel state with a reverse micelle structure; this gel state structure synergizes the fat-soluble antioxidant and the water-soluble antioxidant, greatly increasing the photostability of the organic sunscreen; thereby solving the problem of poor photostability of the organic sunscreen in the prior art.

[0032] Furthermore, applying the organic sunscreen gel prepared by the above-mentioned preparation method to sunscreen cosmetics can effectively reduce the instability problem of sunscreen cosmetics, thereby being beneficial to improving the sunscreen effect of sunscreen cosmetics.

[0033] In other embodiments of the present application, the oil phase and the phospholipid phase are dissolved into a uniform solution, comprising:

[0034] Dissolve the oil phase and phospholipid phase into a uniform solution at 30°C-90°C.

[0035] In other embodiments of the present application, the aqueous phase is added dropwise to the homogeneous solution under continuous stirring, comprising:

[0036] Under the stirring speed of 100r / min-1000r / min, the aqueous phase is added dropwise into the homogeneous solution.

[0037] In a third aspect, the present application provides a cosmetic comprising the organic sunscreen gel provided in the first aspect; or the cosmetic comprising the organic sunscreen gel prepared by the method for preparing the organic sunscreen gel provided in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 Instructions attached Figure 1 The appearance pictures of the organic sunscreen gels prepared in Examples 1 to 4 of the present application are shown. Figure 1 , from left to right are Example 1 to Example 4). DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0041] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0042] The present application embodiment provides an organic sunscreen gel, comprising:

[0043] Oil phase, phospholipid phase and water phase;

[0044] The oil phase includes organic sunscreens, oils, and fat-soluble antioxidants;

[0045] The aqueous phase includes a water soluble antioxidant.

[0046] In the above technical scheme, a gel state with a reverse micelle structure is formed by compounding the oil phase, the phospholipid phase and the water phase; this gel state structure synergizes the fat-soluble antioxidant and the water-soluble antioxidant, greatly increasing the photostability of the organic sunscreen; thereby solving the problem of poor photostability of the organic sunscreen in the prior art.

[0047] Furthermore, applying the above-mentioned organic sunscreen gel to sunscreen cosmetics can effectively reduce the instability problem of sunscreen cosmetics, thereby helping to improve the sunscreen effect of the sunscreen cosmetics.

[0048] Furthermore, in some embodiments of the present application, the above-mentioned organic sunscreen includes: a fat-soluble sunscreen.

[0049] Further, in some embodiments of the present application, the above-mentioned organic sunscreen includes: ethylhexyl methoxycinnamate, isopentyl methoxycinnamate, ethylhexyl salicylate, humulose acid, amyl p-dimethylaminobenzoate, butyl methoxydibenzoylmethane, diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxymethoxyphenyl triazine, drometrizole trisiloxane, dibenzophenone-3,4-methylbenzylidene camphor, ethylhexyl triazone, diethylhexyl butyramido triazone, polysilicone 15 or at least one of 2-nitrile-3,3-diphenylacrylate-2-ethylhexyl ester.

[0050] Illustratively, in some embodiments of the present application, the above-mentioned organic sunscreen agent is: ethylhexyl methoxycinnamate, isopentyl methoxycinnamate, ethylhexyl salicylate, humulose acid ester, amyl p-dimethylaminobenzoate, butyl methoxydibenzoylmethane, diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxymethoxyphenyl triazine, drometrizole trisiloxane, dibenzophenone-3,4-methylbenzylidene camphor, ethylhexyl triazone, diethylhexyl butyramido triazone, polysilicone 15 or any one of 2-nitrile-3,3-diphenylacrylate-2-ethylhexyl ester.

[0051] Further, in some embodiments of the present application, the above-mentioned organic sunscreen is: a mixture of ethylhexyl methoxycinnamate and isoamyl methoxycinnamate; or the above-mentioned organic sunscreen is: a mixture of ethylhexyl salicylate, humulose acid, and amyl p-dimethylaminobenzoate.

[0052] Furthermore, in some embodiments of the present application, the oil is any one of isopropyl myristate, dibutyl adipate, diethylhexyl carbonate, vegetable oil, silicone oil, n-butyl stearate, dicarboxylic acid esters, cycloalkanes, aliphatic hydrocarbons, cetyl oleate or tricaprylin.

[0053] Illustratively, in some embodiments of the present application, the oil is: a mixture of isopropyl myristate and dibutyl adipate; the two can be mixed in any proportion.

[0054] Illustratively, in some embodiments of the present application, the above-mentioned oil is: a mixture of isopropyl myristate, dibutyl adipate, diethylhexyl carbonate, vegetable oil, and silicone oil; the two can be mixed in any proportion.

[0055] Furthermore, in some embodiments of the present application, the fat-soluble antioxidant includes: one or more of VE, VA, butylated hydroxytoluene (BHT), and pentaerythritol tetrakis (di-tert-butyl hydroxyhydrocinnamate) (TT).

[0056] Illustratively, in some embodiments of the present application, the fat-soluble antioxidant is any one of VE, VA, butylated hydroxytoluene (BHT), and pentaerythritol tetrakis (di-tert-butyl hydroxyhydrocinnamate) (TT).

[0057] Illustratively, in some embodiments of the present application, the fat-soluble antioxidant is a mixture of VE, VA, and butylated hydroxytoluene (BHT); the two can be mixed in any proportion.

[0058] Illustratively, in some embodiments of the present application, the fat-soluble antioxidant is: VE, VA, butylated hydroxytoluene (BHT), pentaerythritol tetrakis (di-tert-butyl hydroxyhydrocinnamate) (TT); the four can be mixed in any proportion.

[0059] Furthermore, in some embodiments of the present application, the water-soluble antioxidant includes one or more of VC, soy isoflavones, green tea polyphenols or caffeic acid.

[0060] Illustratively, in some embodiments of the present application, the water-soluble antioxidant is any one of VC, soy isoflavones, green tea polyphenols or caffeic acid.

[0061] Illustratively, in some embodiments of the present application, the water-soluble antioxidant is a mixture of VC and soy isoflavones; the two can be mixed in any proportion.

[0062] Furthermore, in some embodiments of the present application, the aforementioned aqueous phase also includes water; further optionally, in some embodiments of the present application, the aqueous phase can be prepared by dissolving a water-soluble antioxidant in water.

[0063] Furthermore, in some embodiments of the present application, the phospholipid phase includes one or more of soybean lecithin, hydrogenated lecithin or egg yolk phosphatidylcholine.

[0064] Illustratively, in some embodiments of the present application, the phospholipid phase is any one of soybean lecithin, hydrogenated lecithin or egg yolk phosphatidylcholine.

[0065] Illustratively, in some embodiments of the present application, the phospholipid phase is a mixture of soybean lecithin and hydrogenated lecithin; the two can be mixed in any proportion.

[0066] Further, in some embodiments of the present application, the organic sunscreen gel comprises, by mass percentage:

[0067] Water phase 0.001%-6%, oil phase 20%-70%, phospholipids 25%-79%.

[0068] For example, in some embodiments of the present application, the organic sunscreen gel comprises, by mass percentage:

[0069] Aqueous phase 0.001%, 0.002%, 0.005%, 0.008%, 0.01%, 0.02%, 0.1%, 0.5%, 1%, 1.1%, 1.5%, 2%, 3%, 4%, 5%, 6% or the range between any two of the foregoing values;

[0070] Oil phase 20%, 21%, 22%, 25%, 28%, 30%, 32%, 34%, 35%, 38%, 40%, 45%, 50%, 55%, 60%, 65%, 70% or the range between any two of the foregoing values;

[0071] Phospholipids 25%, 26%, 28%, 30%, 32%, 35%, 40%, 50%, 60%, 63%, 64%, 65%, 66%, 68%, 70%, 75%, 76%, 78%, 79% or the range between any two of the foregoing values.

[0072] Further, in some embodiments of the present application, the oil phase comprises, by mass percentage:

[0073] 3-30% organic sunscreen, 40-70% oil and 2-30% fat-soluble antioxidants.

[0074] Exemplarily, in terms of mass percentage, the oil phase includes: 3%, 5%, 10%, 20%, 25%, 30% organic sunscreen; 40%, 45%, 50%, 55%, 60%, 65%, 70% oil; 2%, 5%, 10%, 15%, 20%, 25%, 30% fat-soluble antioxidant.

[0075] Further optionally, in terms of mass percentage, the oil phase comprises:

[0076] 17%-25% organic sunscreen, 50%-67% oil and 17%-25% fat-soluble antioxidants.

[0077] Exemplarily, in terms of mass percentage, the oil phase includes: 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25% organic sunscreen; 50%, 52%, 55%, 58%, 60%, 62%, 65%, 66%, 67% oil; 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25% fat-soluble antioxidants.

[0078] Further, in some embodiments of the present application, the aqueous phase comprises, by mass percentage:

[0079] 0.001%-83% water-soluble antioxidant, the balance is water.

[0080] Illustratively, the aqueous phase comprises, by mass percentage, 0.001%, 0.01%, 0.1%, 0.2%, 0.5%, 1%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 83% water-soluble antioxidant, and the balance is water.

[0081] Further, in some embodiments of the present application, the aqueous phase comprises, by mass percentage:

[0082] 0.2%-83% water-soluble antioxidant, the balance is water.

[0083] Illustratively, the aqueous phase comprises, by mass percentage: 0.21%, 0.22%, 0.23%, 0.25%, 0.28%, 0.3%, 0.5%, 1%, 5%, 15%, 25%, 35%, 45%, 55%, 65%, 75%, 82% water-soluble antioxidant, and the balance is water. Further, some embodiments of the present application provide a method for preparing an organic sunscreen gel, the preparation method comprising:

[0084] The oil phase and the phospholipid phase are dissolved into a uniform solution; under continuous stirring, the aqueous phase is added dropwise into the uniform solution to form a gel structure.

[0085] Further, in some embodiments of the present application, the above-mentioned dissolving the oil phase and the phospholipid phase into a uniform solution comprises:

[0086] Dissolve the oil phase and phospholipid phase into a uniform solution at 30°C-90°C.

[0087] Further optionally, in some embodiments of the present application, the above-mentioned dissolving the oil phase and the phospholipid phase into a uniform solution comprises:

[0088] The oil phase and the phospholipid phase are dissolved into a uniform solution at 30°C, 31°C, 32°C, 35°C, 40°C, 50°C, 60°C, 70°C, 80°C, 90°C or in a range between any two of the foregoing values.

[0089] Further, in some embodiments of the present application, the aqueous phase is added dropwise to the homogeneous solution under continuous stirring, comprising:

[0090] Under the stirring speed of 100r / min-1000r / min, the aqueous phase is added dropwise into the homogeneous solution.

[0091] Further optionally, in some embodiments of the present application, the aqueous phase is added dropwise to the uniform solution under continuous stirring, comprising:

[0092] The aqueous phase is added dropwise into the homogeneous solution at a stirring speed of 100 r / min, 200 r / min, 300 r / min, 400 r / min, 500 r / min, 600 r / min, 700 r / min, 800 r / min, 900 r / min, 1000 r / min or in the range between any two of the foregoing values.

[0093] In some embodiments of the present application, the method for preparing an organic sunscreen gel comprises: weighing an oil phase and a phospholipid raw material and magnetically stirring them at 45°C-55°C to form a uniform solution; then dissolving a water-soluble antioxidant in pure water to prepare an aqueous phase; and then adding the aqueous phase dropwise to the uniform solution prepared above under continuous stirring to form a gel structure.

[0094] The above-mentioned preparation method utilizes reverse micelle gel encapsulation technology to achieve the coexistence of organic sunscreen, fat-soluble antioxidant and water-soluble antioxidant in the same system, thereby achieving synergistic coordination of fat-soluble antioxidant and water-soluble antioxidant and improving the photostability of organic sunscreen.

[0095] Compared with the common solution in the art of using a single fat-soluble antioxidant to improve the photostability of organic sunscreens, the above technical solution greatly reduces the amount of fat-soluble antioxidants used. Fat-soluble antioxidants are highly irritating to the skin; the above technical solution of the present application effectively improves the anti-irritation property of cosmetics by reducing the content of fat-soluble antioxidants.

[0096] The present application provides a cosmetic, which includes the organic sunscreen gel provided in the first aspect; or the cosmetic includes the organic sunscreen gel prepared by the preparation method of the organic sunscreen gel provided in the second aspect.

[0097] In the above technical scheme, the organic sunscreen gel provided by the first aspect is added to the cosmetics; or the cosmetics include the organic sunscreen gel prepared by the preparation method of the organic sunscreen gel provided by the second aspect, which can effectively increase the photostability of the organic sunscreen; and at the same time, the amount of fat-soluble antioxidant added can be reduced, thereby reducing the irritation of the cosmetics.

[0098] Some specific embodiments are listed below to better illustrate the present application.

[0099] [Examples 1-4 and Comparative Examples 1-3]

[0100] An organic sunscreen gel is provided, and the formula of each embodiment is shown in Table 1. The unit in Table 1 is wt.%.

[0101] Table 1

[0102]

[0103]

[0104] Preparation method:

[0105] According to the ratio in Table 1, weigh the raw materials of each embodiment or comparative example; follow the steps below:

[0106] The oil phase and phospholipid raw materials were weighed and magnetically stirred at 50°C to form a uniform solution, VC was dissolved in pure water, and the aqueous phase was added dropwise to the oil tank raw materials under continuous stirring to form a gel structure.

[0107] Experimental example

[0108] The properties of the organic sunscreen gel prepared in each example or comparative example were tested.

[0109] 1. Light stability

[0110] Take samples from each embodiment or comparative example and evenly apply them on a polymethyl methacrylate (PMMA) plate (HD6, 5 cm×5 cm). The amount of sample added is 2.0±0.2 mg / cm 2 .

[0111] The absorbance of the samples was measured using a sun protection factor testing system.

[0112] Fix the PMMA plate on the sample holder of the xenon lamp aging box, set the xenon lamp spectrum range to 300nm-400nm, and the irradiance to 36W / m 2 After taking out the PMMA plates, the absorbance of the three PMMA plates after irradiation was measured using a sun protection index test system, with 4 sites measured on each plate.

[0113] Calculate the average value of the four sites on each PMMA plate and the average value of the absorbance of the three PMMA plates, and calculate the photostability, the decrease value of the maximum absorbance: A = (A0-At) / A0*100%.

[0114] The test results are shown in Table 2.

[0115] Table 2 Light stability reduction values ​​of each sample

[0116] sample Light stability reduction value A(%) Example 1 15 Example 2 16 Example 3 15 Example 4 17 Comparative Example 1 57 Comparative Example 2 89 Comparative Example 3 94

[0117] It can be seen from the experimental data in the above table that the organic sunscreen gel provided by Examples 1-4 of the present application has a much lower photostability reduction value than each comparative example; it can be seen that the organic sunscreen gel of the present application has a better photostability.

[0118] This shows that the present application scheme, through the reverse micelle gel encapsulation technology, water-soluble and fat-soluble antioxidants can synergistically enhance the photostability of organic sunscreens.

[0119] 2. The appearance of the organic sunscreen gels prepared in Examples 1 to 4 was tested.

[0120] Instructions attached Figure 1 The appearance pictures of the organic sunscreen gels prepared in Examples 1 to 4 of the present application are shown. Figure 1 , from left to right are Example 1 to Example 4).

[0121] Attached to the instruction manual Figure 1 It can be seen that the organic sunscreen gels prepared in Examples 1 to 4 of the present application are in a gel state. It can be seen that the scheme of the present application allows the oil phase, phospholipid phase and water phase to be compounded to form a gel state with a reverse micelle structure; this gel state structure synergizes the fat-soluble antioxidant and the water-soluble antioxidant in the same system, greatly increasing the photostability of the organic sunscreen.

[0122] [Examples 5-8]

[0123] An organic sunscreen gel is provided, and the formula of each embodiment is shown in Table 3. The unit in Table 3 is wt.%.

[0124] Table 3

[0125]

[0126] The photostability was tested using the same method as above, and the results are shown in Table 4.

[0127] Table 4

[0128] sample Light stability reduction value A(%) Example 5 16 Example 6 17 Example 7 17 Example 8 16

[0129] It can be seen from the experimental data in the above table that the organic sunscreen gel provided by Examples 5 to 8 of the present application has excellent photostability, and the photostability is reduced by no more than 20%.

[0130] This shows that the present application scheme, through the reverse micelle gel encapsulation technology, water-soluble and fat-soluble antioxidants can synergistically enhance the photostability of organic sunscreens.

[0131] [Examples 9-12]

[0132] An organic sunscreen gel is provided, and the formulas of various embodiments are shown in Table 5. The unit in Table 5 is wt.%.

[0133] Table 5

[0134]

[0135]

[0136] The photostability was tested using the same method as above, and the results are shown in Table 6.

[0137] Table 6

[0138] sample Light stability reduction value A(%) Example 9 18 Example 10 19 Embodiment 11 18 Example 12 17

[0139] It can be seen from the experimental data in the above table that the organic sunscreen gel provided by Examples 9-12 of the present application has excellent photostability, and the photostability is reduced by no more than 20%.

[0140] This shows that the present application scheme, through the reverse micelle gel encapsulation technology, water-soluble and fat-soluble antioxidants can synergistically enhance the photostability of organic sunscreens.

[0141] The embodiments described above are only part of the embodiments of the present application, but not all of the embodiments.

[0142] The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

Claims

1. An organic sunscreen gel, characterized in that: It includes an oil phase, a phospholipid phase and a water phase; The oil phase includes organic sunscreen, oil and fat-soluble antioxidant; The aqueous phase includes a water-soluble antioxidant; In terms of mass percentage, the organic sunscreen gel comprises: Water-soluble antioxidants 0.01%-5%, oils 10%-20%, phospholipids 64%-78.99%; fat-soluble antioxidants 5%; sunscreen 5%; the balance is water; Wherein, the organic sunscreen comprises: at least one of ethylhexyl methoxycinnamate, isopentyl methoxycinnamate, ethylhexyl salicylate, humulose acid ester, amyl p-dimethylaminobenzoate, butyl methoxydibenzoylmethane, diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxymethoxyphenyl triazine, drometrizole trisiloxane, benzophenone-3, 4-methylbenzylidene camphor, ethylhexyl triazone, diethylhexyl butyramido triazone, polysilicone 15 or 2-nitrile-3,3-diphenylacrylate-2-ethylhexyl ester; The oil comprises one or more of isopropyl myristate, dibutyl adipate, diethylhexyl carbonate, vegetable oil, silicone oil, n-butyl stearate, dicarboxylic acid ester, cycloalkane, aliphatic hydrocarbon, cetyl oleate or tricaprylin; The fat-soluble antioxidant includes: one or more of VE, VA, butylated hydroxytoluene, and pentaerythritol tetra(di-tert-butyl hydroxyhydrocinnamate); The water-soluble antioxidant includes one or more of VC, soy isoflavones, green tea polyphenols or caffeic acid; The phospholipid phase includes one or more of soybean lecithin, hydrogenated lecithin or egg yolk phosphatidylcholine; The preparation of the organic sunscreen gel comprises: The oil phase and the phospholipid phase are dissolved into a uniform solution at 30° C.-90° C.; under continuous stirring, the water phase is added dropwise into the uniform solution to form a gel structure.

2. The method for preparing the organic sunscreen gel according to claim 1, characterized in that: Dissolving the oil phase and the phospholipid phase into a uniform solution at 30° C.-90° C.; adding the water phase dropwise into the uniform solution under continuous stirring to form a gel structure; The step of adding the aqueous phase dropwise to the homogeneous solution under continuous stirring comprises: Under the stirring condition of 100 r / min-1000 r / min, the aqueous phase is added dropwise into the homogeneous solution.

3. A cosmetic, characterized in that: The cosmetic comprises the organic sunscreen gel according to claim 1; or the cosmetic comprises the organic sunscreen gel prepared by the method for preparing the organic sunscreen gel according to claim 2.

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