Sunscreen cream

Abstract

The invention discloses sunscreen cream. The sunscreen cream is prepared from the following components in percentage by weight: 0.82-8.7% of titanium dioxide, 0.5-10% of diethylaminohydroxybenzoyl hexyl benzoate, 1.4-8.4% of octylmethoxycinnamate and 0.5-7.5% of methylene bis-benzotriazolyl tetramethylbutylphenol. According to the sunscreen cream, a physical sun-screening agent (titanium dioxide)and a chemical sun-screening agent (the diethylaminohydroxybenzoyl hexyl benzoate, the methylene bis-benzotriazolyl tetramethylbutylphenol and avobenzone) are reasonably blended to prepare a cream forming agent, and the sunscreen cream is good in skin feel and good in sunscreen effect.

Description

technical field

[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a sunscreen. Background technique

[0002] Ultraviolet radiation in sunlight is the main environmental factor causing skin aging and skin tumors. In order to prevent skin damage and skin diseases, sunscreen products are more and more widely used. However, traditional chemical sunscreens have problems such as low solubility, high irritation, poor photostability, greasy skin feeling, and low UV absorption rate. Therefore, it is necessary to provide a sunscreen with good sunscreen performance, good photostability, and refreshing and non-greasy . Contents of the invention

[0003] The object of the present invention is to provide a sunscreen by overcoming the disadvantages of the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a sunscreen, comprising the following components in weight percent: 0.8...

Examples

Embodiment 1～8 and comparative example 1～3

[0032] The formula of the sunscreen described in Examples 1-8 and Comparative Examples 1-3 is shown in Table 1, and the preparation method of the sunscreen described in Examples 1-8 and Comparative Examples 1-3 comprises the following steps:

[0033] 1. Preparation of slurry: Mix isononyl isononanoate, C12-15 alcohol benzoate, titanium dioxide / silica / polydimethylsiloxane and mix well, then grind it three times with a three-roller until it is completely dispersed ;

[0034] 2. Put MONTANOV TM 202. MONTANOV TM S, Cetearyl Alcohol, Dimethicone, Diethylaminobenzoyl Hexyl Benzoate, XIAMETER™ MPMX-0345, Tocopheryl Acetate, Vinyl Dimethicone / Polymethicone Add polysiloxane silsesquioxane crosslinked polymer, VP / hexadecene copolymer, methylparaben and propylparaben into the oil phase pot in sequence, heat and stir to 75-85°C;

[0035] 3. Add the slurry prepared in step 1 into the oil phase pot, continue to stir and heat up to 75-85°C;

[0036] 4. Deionized water, glycerin, butylene...

Embodiment 9

[0045] In order to verify the skin feel of each group of sunscreens, 88 volunteers with oily or mixed skin, aged 18-35, were selected and divided into 11 groups, with 8 people in each group, and tried Examples 1-8 and Comparative Example 1 respectively. For the sunscreen described in ~3, investigate the skin feel of the test subjects, score 5 points, 4 points, 3 points, 2 points, 1 point, and 0 points in order from good to bad, and the average value of the statistical test. The test results are shown in Table 2.

[0046] The skin feeling test result of table 2 embodiment 1~8 and comparative example 1~3

[0047]

Embodiment 10

[0049] Skin irritation test of sunscreen

[0050] experiment method

[0051] A total of 80 female volunteers were selected and randomly divided into 8 groups, 10 in each group. Subjects should meet the volunteer inclusion criteria, have no history of allergic dermatitis, and have not used irritating products in the previous month.

[0052] Get about 0.02-0.025 grams of the cosmetics prepared in Examples 1 to 8 and apply them to the spot tester (Beijing Kepu Instrument Factory) for a small test, apply the special tape for external use to the back of the test subject, and leave the spot tester after 24 hours. Gently wipe off the remaining product with a damp paper towel, and record the results at 0.5 hour, 24 hours, and 48 hours according to the skin reaction grading standard in the "Safety and Technical Specifications for Cosmetics" (2015). The identification criteria are shown in Table 3.

[0053] Table 3 Scoring Criteria for Skin Irritation

[0054]

[0055]

[0056...

technical field

[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a sunscreen. Background technique

[0002] Ultraviolet radiation in sunlight is the main environmental factor causing skin aging and skin tumors. In order to prevent skin damage and skin diseases, sunscreen products are more and more widely used. However, traditional chemical sunscreens have problems such as low solubility, high irritation, poor photostability, greasy skin feeling, and low UV absorption rate. Therefore, it is necessary to provide a sunscreen with good sunscreen performance, good photostability, and refreshing and non-greasy . Contents of the invention

[0003] The object of the present invention is to provide a sunscreen by overcoming the disadvantages of the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a sunscreen, comprising the following components in weight percent: 0.8...

Examples

Embodiment 1～8 and comparative example 1～3

[0032] The formula of the sunscreen described in Examples 1-8 and Comparative Examples 1-3 is shown in Table 1, and the preparation method of the sunscreen described in Examples 1-8 and Comparative Examples 1-3 comprises the following steps:

[0033] 1. Preparation of slurry: Mix isononyl isononanoate, C12-15 alcohol benzoate, titanium dioxide / silica / polydimethylsiloxane and mix well, then grind it three times with a three-roller until it is completely dispersed ;

[0034] 2. Put MONTANOV TM 202. MONTANOV TM S, Cetearyl Alcohol, Dimethicone, Diethylaminobenzoyl Hexyl Benzoate, XIAMETER™ MPMX-0345, Tocopheryl Acetate, Vinyl Dimethicone / Polymethicone Add polysiloxane silsesquioxane crosslinked polymer, VP / hexadecene copolymer, methylparaben and propylparaben into the oil phase pot in sequence, heat and stir to 75-85°C;

[0035] 3. Add the slurry prepared in step 1 into the oil phase pot, continue to stir and heat up to 75-85°C;

[0036] 4. Deionized water, glycerin, butylene...

Embodiment 9

[0045] In order to verify the skin feel of each group of sunscreens, 88 volunteers with oily or mixed skin, aged 18-35, were selected and divided into 11 groups, with 8 people in each group, and tried Examples 1-8 and Comparative Example 1 respectively. For the sunscreen described in ~3, investigate the skin feel of the test subjects, score 5 points, 4 points, 3 points, 2 points, 1 point, and 0 points in order from good to bad, and the average value of the statistical test. The test results are shown in Table 2.

[0046] The skin feeling test result of table 2 embodiment 1~8 and comparative example 1~3

[0047]

Embodiment 10

[0049] Skin irritation test of sunscreen

[0050] experiment method

[0051] A total of 80 female volunteers were selected and randomly divided into 8 groups, 10 in each group. Subjects should meet the volunteer inclusion criteria, have no history of allergic dermatitis, and have not used irritating products in the previous month.

[0052] Get about 0.02-0.025 grams of the cosmetics prepared in Examples 1 to 8 and apply them to the spot tester (Beijing Kepu Instrument Factory) for a small test, apply the special tape for external use to the back of the test subject, and leave the spot tester after 24 hours. Gently wipe off the remaining product with a damp paper towel, and record the results at 0.5 hour, 24 hours, and 48 hours according to the skin reaction grading standard in the "Safety and Technical Specifications for Cosmetics" (2015). The identification criteria are shown in Table 3.

[0053] Table 3 Scoring Criteria for Skin Irritation

[0054]

[0055]

[0056...

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