A composition with no decrease in sun protection effect after exposure to sunlight and its use

Abstract

This invention relates to a composition with sun protection efficacy that does not diminish under prolonged sun exposure and its application. The composition comprises butyl octyl salicylate, diethylhexyl eugenol malonate, and a hydrogenated palm oil-sugarcane extract complex. This invention creatively discovers that butyl octyl salicylate, diethylhexyl eugenol malonate, and the hydrogenated palm oil-sugarcane extract complex have a significant synergistic effect in improving the sun protection efficacy of the composition without diminishing under prolonged sun exposure. The composition developed by this invention has good sun protection and heat protection properties, can improve the stability of sunscreen agents under prolonged sun and heat exposure, and can also improve the skin's barrier repair ability to a certain extent.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology, specifically relating to a composition that does not weaken its sun protection effect even after prolonged exposure to sunlight and its application. Background Technology

[0002] Sunlight brings high levels of ultraviolet radiation and heat, making outdoor sun protection especially important. Consumers typically choose suitable sunscreens to protect their skin from UV damage when engaging in outdoor activities. However, harsh sun exposure and sustained high temperatures are detrimental to the sunscreen agents in the formula, easily inducing their degradation. This is particularly true for photo- and heat-labile sunscreen agents such as butyl methoxydibenzoylmethane, which experience a rapid decline in their sun protection effectiveness under prolonged sun exposure.

[0003] Previous studies have shown that butylmethoxydibenzoylmethane (BDM) exhibits a photodegradation rate exceeding 40% after 2 hours of exposure to simulated sunlight, significantly reducing its sun protection effectiveness. Current technologies typically combine BDM with octocrylene or bis-ethylhexyloxyphenol methoxyphenyl triazine to reduce the photodegradation rate of BDM and improve sun protection. However, octocrylene has a thick, sticky texture, and bis-ethylhexyloxyphenol methoxyphenyl triazine has low solubility and is prone to precipitation, requiring the addition of large amounts of highly polar oils to improve solubility. This also leads to issues with skin feel and other stability problems, making it difficult to achieve a satisfactory user experience.

[0004] Therefore, developing a composition that, when used in conjunction with sunscreens, can reduce the decrease in sunscreen effectiveness after prolonged exposure to sunlight and heat has become one of the urgent technical problems to be solved. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a composition and its application that do not weaken the sun protection effect after sun exposure, that is, a composition and its application that do not weaken the sun protection effect of sunscreen agents after sun exposure.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a composition having a sun protection effect that is not diminished by exposure to sunlight, the composition comprising butyl octyl salicylate, diethylhexyl eugenol malonate, and hydrogenated palm oil-sugarcane extract complex.

[0008] Butyl octyl salicylate, as a polar oil, can regulate the electronic environment of light absorber molecules, quickly reduce the excited state of sunscreen agents under intense sunlight and heat to the ground state, prevent sunscreen agents from being in an unstable excited state, and improve the efficiency of sunscreen agents in returning to a stable ground state.

[0009] Diethylhexyl eugenol malonate, as a highly efficient singlet oxygen quencher, can quench free radicals generated during sun exposure and heat, thereby greatly enhancing the light resistance of the entire sun protection system.

[0010] Sugarcane extract is a polysaccharide-containing high-molecular-weight waxy substance, which is usually used as a moisturizer to increase the skin's hydration effect and skin barrier. This invention prolongs the light path of ultraviolet rays and reduces the contact of ultraviolet rays with sunscreens by forming a hydrogenated palm oil-sugarcane extract complex.

[0011] This invention creatively discovers that the combined use of the above-mentioned butyl octyl salicylate, diethylhexyl eugenol malonate and hydrogenated palm oil-sugarcane extract complex can significantly reduce the degradation level of sunscreen agents, indicating that the three have a significant synergistic effect in alleviating the sun protection effect of sunscreen agents after sun exposure.

[0012] Furthermore, the compositions involved in this invention can further enhance the skin barrier repair efficacy, and experiments have demonstrated that butyl octyl salicylate, diethylhexyl eugenol malonate, and hydrogenated palm oil-sugarcane extract complex have a significant synergistic effect in skin barrier repair.

[0013] Existing sunscreen formulation adjustments primarily aim to enhance the sunscreen's inherent sun protection effect (i.e., synergistic effect, increasing the initial SPF), which is essentially a static additive effect of sun protection capabilities. However, the composition involved in this invention does not aim to increase the initial SPF of sunscreen products, but rather to address the dynamic degradation problem of sunscreen products in real-world usage scenarios. It constructs an intrinsic, proactive, and stable protective system that, through multi-target comprehensive intervention, reduces the decline in sun protection effectiveness after prolonged exposure to sunlight and heat, achieving minimal or no reduction in sun protection effectiveness after intense sun exposure and heat.

[0014] Preferably, in the hydrogenated palm oil-sugarcane extract complex, the mass ratio of hydrogenated palm oil to sugarcane extract is 5:1-15:1, for example, it can be 5:1, 7:1, 9:1, 11:1, 13:1, 15:1, etc.

[0015] Preferably, the composition comprises, by weight parts, 0.3-10 parts of butyl octyl salicylate, 0.1-5 parts of diethylhexyl syringite malonate, and 0.1-5 parts of hydrogenated palm oil-sugarcane extract complex.

[0016] Among them, the specific point values ​​in the range of 0.3-10 can be 0.3, 0.5, 1, 3, 5, 7, 9, 10, etc.; the specific point values ​​in the range of 0.1-5 can be 0.1, 0.5, 1, 2, 3, 4, 5, etc.

[0017] Preferably, the composition comprises, by weight parts, 0.3-8 parts of butyl octyl salicylate, 0.1-2 parts of diethylhexyl eugenol malonate, and 0.1-4 parts of hydrogenated palm oil-sugarcane extract complex.

[0018] Specifically, the point values ​​for 0.3-8 parts can be 0.3, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, etc.; the point values ​​for 0.1-2 parts can be 0.1, 0.3, 0.5, 0.7, 0.9, 1.1, 1.3, 1.5, 1.7, 2, etc.; and the point values ​​for 0.1-4 parts can be 0.1, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, etc.

[0019] By controlling the content of each component in the composition within the above-mentioned range, this invention can further enhance the synergistic effect of butyl octyl salicylate, diethylhexyl eugenol malonate, and hydrogenated palm oil-sugarcane extract complex in terms of not reducing the effects of sun exposure and heat and repairing the skin barrier.

[0020] In a second aspect, the present invention provides a sunscreen composition that does not weaken its sun protection effect when exposed to direct sunlight, the sunscreen composition comprising the composition described in the first aspect and a sunscreen agent.

[0021] Thirdly, the present invention provides the use of the composition described in the first aspect or the sunscreen composition described in the second aspect in the preparation of cosmetics.

[0022] Preferably, the dosage form of the cosmetic includes cream, lotion, gel, oil or aerosol.

[0023] Fourthly, the present invention provides a sunscreen lotion that does not weaken its sun protection effect when exposed to direct sunlight, the sunscreen lotion comprising the composition described in the first aspect, a sunscreen agent, a skin emollient, a moisturizer, an emulsifier, a thickener, a chelating agent, and a solvent.

[0024] Preferably, by weight percentage, the sunscreen lotion comprises 2-13% of the composition described in the first aspect, 5-15% of the sunscreen agent, 5-15% of the emollient, 7-12% of the moisturizer, 3-8% of the emulsifier, 0.5-2% of the thickener, 0.01-0.1% of the chelating agent, and 35-80% of the solvent.

[0025] Preferably, the specific point values ​​in the range of 2-13% can be selected from 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, etc.; the specific point values ​​in the range of 5-15% can be selected from 5%, 7%, 9%, 11%, 13%, 15%, etc.; the specific point values ​​in the range of 7-12% can be selected from 7%, 8%, 9%, 10%, 11%, 12%, etc.; the specific point values ​​in the range of 3-8% can be selected from 3%, 4%, 5%, 6%, 7%, 8%, etc.; the specific point values ​​in the range of 0.5-2% can be selected from 0.5%, 1%, 1.5%, 2%, etc.; the specific point values ​​in the range of 0.01-0.1% can be selected from 0.01%, 0.03%, 0.05%, 0.07%, 0.09%, 0.1%, etc.; and the specific point values ​​in the range of 35-80% can be selected from 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, etc.

[0026] Preferably, the sunscreen agent comprises butyl methoxydibenzoylmethane and / or isoamyl p-methoxycinnamate.

[0027] Preferably, the emollient comprises diisopropyl sebacate and / or caprylic / capric triglyceride.

[0028] Preferably, the emulsifier comprises any one or a combination of at least two of glyceryl stearate, polyethylene glycol stearate, arachidonic acid, behenol, or arachidonic acid glucoside.

[0029] Preferably, the humectant includes butylene glycol and / or hexanediol.

[0030] Preferably, the thickener comprises any one or a combination of at least two of xanthan gum, sodium acrylate / sodium acryloyldimethyl taurate copolymer, isohexadecane, polysorbate or sorbitan oleate.

[0031] Preferably, the chelating agent comprises disodium ethylenediaminetetraacetate.

[0032] Preferably, the solvent includes water.

[0033] Fourthly, the present invention provides a method for preparing a sunscreen lotion with sun protection effect that does not diminish under prolonged sun exposure, as described in the third aspect, the method comprising:

[0034] (1) A composition having sun protection effect that is not weakened by sun exposure, a sunscreen agent and a moisturizer are mixed to obtain phase A; an emulsifier, a thickener, a portion of the solvent and a moisturizer are mixed to obtain phase B; a chelating agent and the remaining solvent are mixed to obtain phase C.

[0035] (2) Mix phase A and phase B, homogenize and emulsify, and then mix and stir with phase C to obtain sunscreen lotion.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] This invention creatively discovers that the complex of butyl octyl salicylate, diethylhexyl eugenol malonate, and hydrogenated palm oil-sugarcane extract has a significant synergistic effect in improving the sun protection efficacy of sunscreens under prolonged sun exposure. The composition developed in this invention has good sun protection properties, can improve the stability of sunscreens under intense sun and heat, and can also enhance the skin's barrier repair ability to a certain extent. Detailed Implementation

[0038] To further illustrate the technical means and effects of the present invention, the following describes the technical solution of the present invention in conjunction with preferred embodiments of the present invention. However, the present invention is not limited to the scope of the embodiments.

[0039] In the following specific embodiments, "isoamyl p-methoxycinnamate and tocopherol" refers to a mixture of isoamyl p-methoxycinnamate and tocopherol in a mass ratio of 99.9:0.1.

[0040] In the following specific embodiments, "glyceryl stearate and PEG-100 stearate" refer to a mixture of glyceryl stearate and PEG-100 stearate in a mass ratio of 55:45.

[0041] In the following specific embodiments, "arachidonic acid, behenol, and arachidonic acid glucoside" are a mixture of arachidonic acid, behenol, and arachidonic acid glucoside in a mass ratio of 55:30:15.

[0042] In the following specific embodiments, the "sodium acrylate / sodium acryloyl dimethyl taurate copolymer, isohexadecane, polysorbate-80, water, and sorbitan oleate" involved are a mixture of sodium acrylate / sodium acryloyl dimethyl taurate copolymer, isohexadecane, polysorbate-80, water, and sorbitan oleate in a mass ratio of 37.5:22.5:7.5:30:2.5.

[0043] The sources of each component / raw material in the following specific implementation method are shown in Table 1.

[0044] Table 1

[0045]

[0046]

[0047] Example 1

[0048] This embodiment provides a composition comprising: 2 parts of butyl octyl salicylate, 1.8 parts of diethylhexyl syringite malonate, and 1 part of hydrogenated palm oil-sugarcane extract complex.

[0049] Example 2

[0050] This embodiment provides a composition comprising: 8 parts of butyl octyl salicylate, 2 parts of diethylhexyl syringite malonate, and 0.5 parts of hydrogenated palm oil-sugarcane extract complex.

[0051] Example 3

[0052] This embodiment provides a composition comprising: 0.3 parts of butyl octyl salicylate, 1 part of diethylhexyl syringite malonate, and 4 parts of hydrogenated palm oil-sugarcane extract complex.

[0053] Example 4

[0054] This embodiment provides a composition comprising: 10 parts of butyl octyl salicylate, 5 parts of diethylhexyl syringite malonate, and 0.1 parts of hydrogenated palm oil-sugarcane extract complex.

[0055] Example 5

[0056] This embodiment provides a composition comprising: 5 parts of butyl octyl salicylate, 0.1 parts of diethylhexyl syringite malonate, and 5 parts of hydrogenated palm oil-sugarcane extract complex.

[0057] Comparative Example 1

[0058] This comparative example provides a composition comprising: 2 parts of butyl octyl salicylate and 1.8 parts of diethylhexyl syringite malonate.

[0059] Comparative Example 2

[0060] This comparative example provides a composition comprising: 2 parts of butyl octyl salicylate and 1 part of hydrogenated palm oil-sugarcane extract complex.

[0061] Comparative Example 3

[0062] This comparative example provides a composition comprising: 1.8 parts of diethylhexyl syringite malonate and 1 part of hydrogenated palm oil-sugarcane extract complex.

[0063] Application Example 1

[0064] This application example provides a sunscreen lotion with the formula shown in Table 2:

[0065] Table 2

[0066]

[0067] The preparation method of the above sunscreen lotion is as follows:

[0068] (1) Heat and dissolve the A-phase raw material, B-phase raw material, and C-phase raw material according to the above formula amount;

[0069] (2) Add phase A raw material to phase B raw material, keep warm at 75°C, homogenize at high speed at 8000 rpm for 8 min, and stir and cool down to 25°C after emulsification.

[0070] (3) Add the C phase raw material to the system of step (2), stir evenly, and degas under vacuum to obtain sunscreen emulsion.

[0071] Application Example 2

[0072] This application example provides a sunscreen lotion with the formula shown in Table 3:

[0073] Table 3

[0074]

[0075] The preparation method of the above sunscreen lotion is as follows:

[0076] (1) Heat and dissolve the A-phase raw material, B-phase raw material, and C-phase raw material according to the above formula amount;

[0077] (2) Add phase A raw material to phase B raw material, keep warm at 75°C, homogenize at high speed at 8000 rpm for 10 min, and after emulsification, stir and cool down to 25°C.

[0078] (3) Add the C phase raw material to the system of step (2), stir evenly, and degas under vacuum to obtain sunscreen emulsion.

[0079] Application Example 3

[0080] This application example provides a sunscreen lotion with the formula shown in Table 4:

[0081] Table 4

[0082]

[0083] The preparation method of the above sunscreen lotion is as follows:

[0084] (1) Heat and dissolve the A-phase raw material, B-phase raw material, and C-phase raw material according to the above formula amount;

[0085] (2) Add phase A raw material to phase B raw material, keep warm at 75°C, homogenize at high speed at 8000 rpm for 5 min, and stir and cool down to 25°C after emulsification.

[0086] (3) Add the C phase raw material to the system of step (2), stir evenly, and degas under vacuum to obtain sunscreen emulsion.

[0087] Application Example 4-5

[0088] Application Examples 4-5 each provide a sunscreen lotion, which differs from Application Example 1 only in that the composition of Example 1 is replaced with an equal mass of the compositions of Examples 4-5 in the respective formulations, while the rest of the formulations and preparation methods are consistent with Application Example 1.

[0089] Comparative Application Examples 1-3

[0090] Comparative Application Examples 1-3 each provide a sunscreen lotion, the only difference between them and Application Example 1 is that the composition of Example 1 is replaced with an equal mass of the compositions of Comparative Examples 1-3 in the formulation, while the rest of the formulation and preparation method are the same as Application Example 1.

[0091] Comparative Application Example 4

[0092] This comparative application example provides a sunscreen lotion, which differs from Application Example 1 only in that the composition of Example 1 is replaced with an equal mass of butyl octyl salicylate in the formulation, while the rest of the formulation and preparation method are consistent with Application Example 1.

[0093] Comparative Application Example 5

[0094] This comparative application example provides a sunscreen lotion, which differs from Application Example 1 only in that the composition of Example 1 is replaced with an equal mass of diethylhexyl eugenol malonate in the formulation, while the rest of the formulation and preparation method are consistent with Application Example 1.

[0095] Comparative Application Example 6

[0096] This comparative application example provides a sunscreen lotion, which differs from Application Example 1 only in that the composition of Example 1 is replaced with an equal mass of hydrogenated palm oil-sugarcane extract complex in the formulation, while the rest of the formulation and preparation method are consistent with Application Example 1.

[0097] Comparative Application Example 7

[0098] This comparative application example provides a sunscreen lotion, which differs from Application Example 1 only in that the composition of Example 1 is removed from the formula, and the reduced mass fraction is made up by water in phase B. The rest of the formula and preparation method are the same as Application Example 1.

[0099] Test Example 1

[0100] Test on sun protection effectiveness without diminishing under intense sunlight:

[0101] (1) Sample to be tested:

[0102] Sunscreens obtained from various application examples and comparative application examples.

[0103] (2) Test method:

[0104] Referring to the "Method for Determining Sun Protection Factor (SPF) Value of Sunscreen Cosmetics" in the "Technical Specifications for Safety of Cosmetics (2015 Edition)," 60 subjects were selected and randomly divided into 12 groups of 5 people each. The minimum erythema dose (MED value) of each volunteer was tested.

[0105] Each group of subjects applied the above-mentioned test sample to the same area of ​​their backs, with an application amount of 2 mg / cm². 2 After 30 minutes, the area coated with the sample was irradiated with 20 times the MED irradiation dose. After 24 hours, the erythema was observed. The arithmetic mean of the SPF value of each group of subjects was calculated, and the integer part was taken as the SPF value of the sample before exposure to sunlight and heat.

[0106] The SolarLight Model 601 UV protection index analyzer and a 45℃ constant temperature water bath were used to simulate the intense sunlight exposure environment. The samples to be tested were then placed in the constant temperature water bath in sequence, and the UVA+UVB full-band mixed ultraviolet radiation of the UV protection index analyzer was turned on for 30 minutes.

[0107] The SPF value of the sample after the exposure to intense sunlight and heat was retested, and the SPF values ​​of the sample before and after exposure to intense sunlight and heat were compared to determine its effectiveness in preventing exposure to intense sunlight and heat.

[0108] (3) Test results:

[0109] The test results are shown in Table 5.

[0110] Table 5

[0111]

[0112] A comparison of the data from Application Example 1 and Comparative Application Example 7 shows that the composition of the present invention does not affect the initial SPF value. However, when the composition of the present invention is not added to the sunscreen, the SPF value decreases significantly after sun exposure, indicating that the composition of the present invention has excellent sun protection effect.

[0113] A comparison of the data from Application Example 1 and Comparative Application Examples 1-6 shows that when the composition lacks any one or any two of the components of butyl octyl salicylate, diethylhexyl eugenol malonate, or hydrogenated palm oil-sugarcane extract complex, the sun protection effect of the sunscreen lotion will be greatly reduced after sun exposure. This indicates that butyl octyl salicylate, diethylhexyl eugenol malonate, and hydrogenated palm oil-sugarcane extract complex have a significant synergistic effect in improving the sun protection effect without weakening it after sun exposure.

[0114] A comparison of the data from Application Example 1 and Application Examples 4-5 shows that when the proportions of each component in the composition are limited to the range of "0.3-8 parts of butyl octyl salicylate, 0.1-2 parts of diethylhexyl eugenol malonate, and 0.1-4 parts of hydrogenated palm oil-sugarcane extract complex", the sunscreen's sun protection effect can be further enhanced by ensuring that exposure to sunlight does not weaken.

[0115] Test Example 2

[0116] Barrier repair effect test;

[0117] (1) Sample to be tested:

[0118] Sunscreens obtained from various application examples and comparative application examples.

[0119] (2) Test method:

[0120] Testing instruments: Tewameter® TMHex transdermal moisture loss probe and CM 825 moisture content probe from Courage Khazaka, Germany.

[0121] Subject screening:

[0122] 1) No gender restrictions, age 18-60;

[0123] 2) Facial moisture content <60%, transepidermal water loss value >15;

[0124] 3) Has not participated in similar efficacy tests within 3 months, has no skin inflammation or systemic diseases, and is not a highly sensitive person;

[0125] 4) In order to comply with ethical principles, the participants were willing to sign an informed consent form;

[0126] Testing environment: The entire test must be conducted in an effective indoor environment with a temperature of 21±1℃ and a humidity of 50±10%.

[0127] Product usage instructions: Each product is tested by 10 people; use once a day after cleansing in the morning for a total of 7 days, with the same dosage for each group;

[0128] Testing process:

[0129] 1) Inform the subjects before the test that they should not apply any skin care products on the day of the test, and this should be maintained for each follow-up visit;

[0130] 2) After cleansing, wait 30 minutes in the efficacy room and measure the barrier repair indicators—the rate of transepidermal water loss and the rate of change in water content.

[0131] 3) Calculation method:

[0132] Change rate of transepidermal water loss rate = (loss rate on day 7 - initial loss rate) / initial loss rate × 100%. The greater the change (absolute value of the negative value), the better the repair effect.

[0133] Moisture content change rate = (value on day 7 - initial value) / initial value × 100%. The greater the change in moisture content, the better the repair effect.

[0134] (3) Test results:

[0135] The test results are shown in Table 6.

[0136] Table 6

[0137]

[0138] As can be seen from the comparison of data from Application Example 1 and Comparative Application Example 7, the composition of the present invention has the ability to promote cell differentiation and proliferation, and can further enhance the skin barrier repair effect of sunscreen.

[0139] A comparison of the data from Application Example 1 and Comparative Application Examples 1-6 shows that the absence of any one or any two components of butyl octyl salicylate, diethylhexyl eugenol malonate, or hydrogenated palm oil-sugarcane extract complex in the composition leads to a decrease in cell differentiation and proliferation capacity. This indicates that butyl octyl salicylate, diethylhexyl eugenol malonate, and hydrogenated palm oil-sugarcane extract complex have a significant synergistic effect on skin barrier repair.

[0140] A comparison of the data from Application Example 1 and Application Examples 4-5 shows that when the proportions of each component in the composition are limited to the range of "0.3-8 parts of butyl octyl salicylate, 0.1-2 parts of diethylhexyl eugenol malonate, and 0.1-4 parts of hydrogenated palm oil-sugarcane extract complex", the barrier repair effect of the composition can be further enhanced.

[0141] Test Example 3

[0142] Security testing:

[0143] (1) Sample to be tested:

[0144] The sunscreen obtained from Examples 1-5.

[0145] (2) Test method:

[0146] Referring to the method for human skin patch testing in the "Cosmetic Safety Technical Specifications (2015 Edition)," the irritation of the sample to the skin was tested.

[0147] Thirty participants were randomly selected from those in Test Example 1. Each participant used a qualified patch tester and a closed patch test method was used, adding 0.020 g of the test sample to each patch. Specifically, each patch tester had multiple pits that could be used as filling positions for the test sample, with different samples occupying different pits, while the blank control pits were left empty.

[0148] The test kit was applied to the flexor side of the subject's forearm using a special external adhesive tape. The test kit was removed after 24 hours. Skin reactions were observed at 30 minutes, 24 hours, and 48 hours after removal. Skin reactions were recorded according to the skin reaction grading standards in the "Cosmetic Safety Technical Specifications (2015 Edition)" (as shown in Table 7).

[0149] Table 7

[0150]

[0151] (3) Test results:

[0152] The average scores of each test product at 30 min, 24 h and 48 h after the test sample was removed are shown in Table 8.

[0153] Table 8

[0154]

[0155] In the human skin occlusion patch test, no adverse skin reactions were observed in 30 subjects 30 min, 24 h, and 48 h after the removal of the test substance patch. This indicates that the sunscreen containing the composition of this invention is non-irritating to the skin and has no positive reaction, demonstrating that sunscreen products containing this composition are safe and gentle.

[0156] The applicant declares that the technical solution of this invention is illustrated by the above embodiments, but this invention is not limited to the above embodiments, that is, it does not mean that this invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of raw materials for the products of this invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of this invention.

[0157] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0158] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A composition having a sun protection effect that is not diminished by exposure to sunlight, characterized in that, The composition comprises, by weight parts, 0.3-8 parts of butyl octyl salicylate, 0.1-2 parts of diethylhexyl syringite malonate, and 0.1-4 parts of hydrogenated palm oil-sugarcane extract complex.

2. The composition according to claim 1, characterized in that, In the hydrogenated palm oil-sugarcane extract complex, the mass ratio of hydrogenated palm oil to sugarcane extract is 5:1-15:

1.

3. A sunscreen composition that does not lose its sun protection effect even after prolonged exposure to sunlight, characterized in that, The sunscreen composition comprises the composition and sunscreen agent as described in claim 1 or 2.

4. The use of the composition of claim 1 or 2 or the sunscreen composition of claim 3 in the preparation of cosmetics; wherein the dosage form of the cosmetics includes creams, lotions, gels, oils or aerosols.

5. A sunscreen lotion that does not lose its sun protection effect even after prolonged exposure to sunlight, characterized in that, The sunscreen lotion includes the composition of claim 1 or 2, sunscreen agent, emollient, moisturizer, emulsifier, thickener, chelating agent and solvent.

6. The sunscreen lotion according to claim 5, characterized in that, By weight percentage, the sunscreen lotion comprises 2-13% of the composition according to claim 1 or 2, 5-15% of sunscreen agent, 5-15% of emollient, 7-12% of moisturizer, 3-8% of emulsifier, 0.5-2% of thickener, 0.01-0.1% of chelating agent and 35-80% of solvent.

7. The sunscreen lotion according to claim 5, characterized in that, The sunscreen agents include butyl methoxydibenzoylmethane and / or isoamyl p-methoxycinnamate.

8. A method for preparing a sunscreen lotion with sun protection effect that does not diminish under prolonged sun exposure, as described in any one of claims 5-7, characterized in that, The preparation method includes: (1) A composition having sun protection effect that is not weakened by sun exposure, a sunscreen agent and a moisturizer are mixed to obtain phase A; an emulsifier, a thickener, a portion of the solvent and a moisturizer are mixed to obtain phase B; a chelating agent and the remaining solvent are mixed to obtain phase C; (2) Mix phase A and phase B, homogenize and emulsify, and then mix and stir with phase C to obtain sunscreen lotion.

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