A sunscreen foam aerosol containing cerium oxide and a preparation method thereof

Abstract

The present invention belongs to the field of cosmetic technology, and in particular to a sunscreen foam aerosol containing cerium oxide and a preparation method thereof. The sunscreen foam aerosol provided by the present invention contains PEG / PPG / polybutylene glycol 8 / 5 / 3 glycerol, a balloon form toughness wrapping film, o-cymene 5-alcohol, allantoin, a solubilizing gas system, a foaming agent, cetearyl alcohol polyether 25, a sunscreen, di (PPG-2 myristyl alcohol polyether 10) adipate, PEG-75 shea butter glycerides, parahydroxyacetophenone, essence, 1,2-hexanediol, a propellant, water, etc. The sunscreen foam aerosol containing cerium oxide provided by the present invention has been pioneered in using a specific chemical sunscreen in combination with a cerium oxide physical sunscreen, which can effectively defend against UVB, UVA, blue light, while also having the functions of moisturizing, moisturizing, replenishing water, and having the functions of skin care and repairing on the basis of sunscreen.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics, and particularly relates to a sunscreen foam aerosol containing cerium oxide and a preparation method thereof. Background Art

[0002] Sun protection is an essential step in daytime skin care. Dermatologists categorize the ultraviolet rays contained in sunlight into long-wave ultraviolet (UVA) (320nm-400nm), medium-wave ultraviolet (UVB) (280nm-320nm), and short-wave ultraviolet (UVC) (200nm-280nm). Ultraviolet rays below 280nm are absorbed by the ozone layer and cannot reach the ground. However, the UV rays that do reach the ground can have various effects on our skin. UVB can cause erythema or blisters, promote melanin formation, and cause hyperpigmentation, leading to the formation of brown spots. UVA, on the other hand, reaches the dermis and slowly alters the elastic fibers in blood vessel walls and connective tissue, causing browning of the skin, reducing skin elasticity, promoting the development of wrinkles, and rapidly aging. It can also promote erythema reactions and even trigger phototoxicity or photosensitivity. Therefore, how to mitigate the adverse effects of UV rays on human health through the use of sunscreen products has become a hot topic in the cosmetics industry in recent years.

[0003] The selection and use of sunscreens is the core of sunscreen cosmetics. Currently, the UV-shielding principles of commonly used sunscreen products are primarily physical and chemical. Physical sunscreens utilize physical principles to protect against the sun, primarily reflecting sunlight to achieve the desired effect. Chemical sunscreens primarily utilize chemical ingredients to absorb UV rays, thereby providing sun protection. However, existing sunscreen products only temporarily alleviate skin dehydration and offer some sun protection, but their effectiveness is subpar. For example, physical sunscreens are ineffective, have a thick texture, feel greasy, easily cause whitening, have poor skin compatibility, and are prone to fading or clogging pores. Chemical sunscreens are easily absorbed by the skin, and high SPF sunscreens are prone to causing skin allergies. The drawbacks of chemical sunscreens are that some only protect against UVA, others only against UVB, and their UV absorption wavelength range is not broad enough.

[0004] Therefore, it is necessary to develop a sunscreen spray aerosol which has good sun protection effect and can also have skin repairing effects such as moisturizing and skin care. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention aims to provide a sunscreen foam aerosol containing cerium oxide and a method for preparing the same. The cerium oxide-containing sunscreen foam aerosol provided by the present invention innovatively utilizes a specific chemical sunscreen in combination with a cerium oxide physical sunscreen. It effectively protects against UVB, UVA, and blue light, with a measured critical wavelength greater than or equal to 370nm. It offers broad-spectrum sunscreen, protecting the skin from harmful ultraviolet and blue light rays. It also provides moisturizing, hydrating, and hydrating properties, offering both skin care and repair functions in addition to sun protection.

[0006] The technical solution of the present invention is:

[0007] A sunscreen foam aerosol containing cerium oxide comprises the following components and their weight percentages: 1-5% of PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerol, 0.03-3% of a balloon-shaped tough wrapping film, 0.01-0.1% of o-cymene-5-ol, 0.05-0.4% of allantoin, 7.01-31% of a solubilizing gas system, 1-14% of a foaming agent, 0.1-2.5% of ceteareth-25, 0.6-28.5% of a sunscreen, 0.1-2% of di(PPG-2 myreth-10) adipate, 0.1-3% of PEG-75 shea butter glycerides, 0.05-0.15% of p-hydroxyacetophenone, 0.1-0.5% of a fragrance, 0.1-3% of 1,2-hexanediol, 10-55% of a propellant, and deionized water added to 100%.

[0008] Furthermore, the sunscreen foam aerosol containing cerium oxide is composed of the following components and their weight percentages:

[0009] PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin 2%, balloon form toughening film 1.5%, o-cymene-5-ol 0.05%, allantoin 0.3%, solubilizing gas system 13.5%, foaming agent 5%, ceteareth-25 1.5%, sunscreen 15%, di(PPG-2 myreth-10) adipate 1.5%, PEG-75 shea butter glycerides 1%, parahydroxyacetophenone 0.08%, fragrance 0.2%, 1,2-hexanediol 0.5%, propellant 25%, deionized water 32.87%.

[0010] Furthermore, the balloon-shaped tough wrapping film is composed of xanthan gum, sodium magnesium silicate and VP / hexadecene copolymer in a weight ratio of 0.1-5:0.1-10:0.1-15.

[0011] Furthermore, the balloon-shaped tough wrapping film is composed of xanthan gum, sodium magnesium silicate and VP / hexadecene copolymer in a weight ratio of 0.2:0.8:0.5.

[0012] Furthermore, the solubilizing gas system is composed of anhydrous ethanol, PEG / PPG-14 / 7 dimethyl ether and sodium lauroyl glutamate in a weight ratio of 6-25:1-5:0.01-1.

[0013] Furthermore, the solubilizing gas system consists of anhydrous ethanol, PEG / PPG-14 / 7 dimethyl ether and sodium lauroyl glutamate in a weight ratio of 10:3:0.5.

[0014] Furthermore, the sunscreen is composed of cerium oxide, octocrylene, ethylhexyl methoxycinnamate, diethylhexyl butyramido triazone, disodium phenyl dibenzimidazole tetrasulfonate, and bis-ethylhexyloxyphenol methoxyphenyl triazine in a weight ratio of 0.1-10:0.1-5:0.1-5:0.1-3:0.1-2.5:0.1-3.

[0015] Furthermore, the sunscreen is composed of cerium oxide, octocrylene, ethylhexyl methoxycinnamate, diethylhexyl butyramidoxizone, disodium phenyl dibenzimidazole tetrasulfonate, and bis-ethylhexyloxyphenol methoxyphenyl triazine in a weight ratio of 5:2:3:2:1:2.

[0016] Furthermore, the foaming agent is composed of lauryl glucoside and capryl / caprylamidopropyl betaine in a weight ratio of 0.5-6:0.5-8.

[0017] Furthermore, the foaming agent is composed of lauryl glucoside and capryl / caprylamidopropyl betaine in a weight ratio of 3:2.

[0018] The sunscreen foam aerosol prepared by the present invention can effectively protect against UVB, UVA, and blue light by combining multiple specific chemical sunscreens with a cerium oxide physical sunscreen. It absorbs ultraviolet light energy and converts it into heat energy or harmless visible light waves for release, thereby effectively protecting the skin. In addition, the added cerium oxide physical sunscreen mainly reduces the contact between ultraviolet rays and the skin through reflection and scattering, thereby preventing ultraviolet rays from damaging the skin.

[0019] However, in the prior art, when cerium oxide is used as a sunscreen, it is in the form of a cream or sunscreen spray, which can be inconvenient to use or cause splashing of the liquid during the spraying process, putting the user at risk of pneumoconiosis caused by inhalation of fine particles into the lungs. The sunscreen foam aerosol prepared by the present invention effectively solves this problem. By combining the balloon-shaped tough wrapping film composed of xanthan gum, sodium magnesium silicate, and VP / hexadecene copolymer and the solubilizing gas system composed of anhydrous ethanol, PEG / PPG-14 / 7 dimethyl ether, and sodium lauroyl glutamate, the cerium oxide physical sunscreen and other chemical sunscreens in the present invention can be released in the form of larger milky bubbles. When applied, the foam bursts to produce a unique crackling sound. This not only effectively improves the sunscreen effect of the aerosol, but also enriches the characteristics of the product.

[0020] In addition, the present invention has moisturizing, hydrating, hydrating and skin care functions by adding active ingredients such as PEG-75 shea butter glycerides, di(PPG-2 myristeth-10) adipate, allantoin and PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin.

[0021] Furthermore, the propellant is one of pharmaceutical grade dimethyl ether, cosmetic grade liquefied petroleum gas, 1,1-difluoroethane, 1,1,1,2-tetrafluoroethane, and HFO-1234ze.

[0022] Furthermore, the propellant used in the present invention is selected from pharmaceutical-grade dimethyl ether (purchased from Dongguan Jiufeng Chemical Co., Ltd.), cosmetic-grade liquefied petroleum gas (purchased from Shenzhen Shenyan Gas Co., Ltd.), 1,1-difluoroethane, 1,1,1,2-tetrafluoroethane, and HFO-1234ze, which can ensure that the base liquid maintains a suitable internal pressure in the aerosol can and a stable system. Among them, HFO-1234ze is an environmentally friendly propellant that can provide the product with environmentally friendly properties such as low GWP (global warming potential), low VOC (volatile organic compounds), and non-flammability.

[0023] In addition, in terms of the valve, a 360-degree small spray volume valve is used, so that the present invention can spray upright and inverted, which is easy to use. During the spraying process, the present invention will not be affected by the reduction of the internal pressure of the aerosol can and the foam spraying effect will be maintained at a certain amount and a certain pressure from the beginning to the end.

[0024] In addition, the present invention also provides a method for preparing a sunscreen foam aerosol containing cerium oxide, comprising the following preparation steps:

[0025] S1. Mix the sunscreen agent and anhydrous ethanol evenly and homogenize to obtain a mixed solution A;

[0026] S2. Dissolve PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, PEG / PPG-14 / 7 dimethyl ether, xanthan gum, sodium magnesium silicate, allantoin, di(PPG-2 myristeth-10) adipate, and PEG-75 shea butter glycerides in deionized water, stir evenly, and heat to 80-85° C., then add VP / hexadecene copolymer, ceteareth-25, sodium lauroyl glutamate, a foaming agent, and p-hydroxyacetophenone, stir evenly, cool to 40-45° C., then add o-cymene-5-ol, 1,2-hexanediol, and flavor, homogenize, and stir evenly to obtain a mixed solution B;

[0027] S3, adding the mixed solution A obtained in step S1 to the mixed solution B, mixing and homogenizing to obtain a base solution;

[0028] S4. Fill the base liquid into the aerosol can, then place the aerosol valve, seal it, fill it with propellant, test it in a water bath, code the bottom of the can, install the nozzle, and install the outer cover.

[0029] Furthermore, the homogenization speed in steps S1 and S2 is 5000-8000 r / min, and the homogenization time is 3-5 min; the homogenization speed in S3 is 8000-12000 r / min, and the homogenization time is 5-10 min.

[0030] Compared with the prior art, the sunscreen foam aerosol containing cerium oxide provided by the present invention has the following advantages:

[0031] (1) The sunscreen foam aerosol containing cerium oxide prepared by the present invention innovatively adopts a combination of a specific chemical sunscreen and a cerium oxide physical sunscreen, which can effectively protect against UVB, UVA, and blue light. The measured critical wavelength is greater than or equal to 370nm, and it has a broad-spectrum sunscreen effect, protecting the skin from the damage of ultraviolet rays and blue light. In combination with aerosol packaging, the base liquid is released in the form of milky foam, accompanied by a unique crackling sound, which not only retains the advantages of conventional sunscreen products, but also enriches the characteristics of the product.

[0032] (2) The present invention adopts an aerosol form, which releases the base liquid in the form of milky foam, avoiding the splashing of liquid "like spray-form products", saving dosage, reducing air pollution, and avoiding the risk of pneumoconiosis caused by the user's lungs inhaling fine particles, which is user-friendly. At the same time, the aerosol also has the airtight property. Compared with ordinary cosmetics, it ensures that the contents are not polluted by the external environment and are not easily deteriorated, which makes users feel at ease.

[0033] (3) The sunscreen aerosol prepared by the present invention also has the functions of moisturizing, hydrating and replenishing water, and has the functions of skin care and repairing on the basis of sun protection. DETAILED DESCRIPTION

[0034] The present invention is further illustrated below through the description of specific implementation methods, but this is not a limitation of the present invention. Those skilled in the art can make various modifications or improvements based on the basic idea of the present invention, but as long as they do not deviate from the basic idea of the present invention, they are all within the scope of protection of the present invention.

[0035] In the following examples and comparative examples, reagents not otherwise specified are conventional reagents and can be purchased from conventional reagent production and sales companies.

[0036] Examples 1 to 3: A sunscreen foam aerosol containing cerium oxide and its preparation method

[0037] As shown in Table 1, the components and contents of three embodiments of the sunscreen foam aerosol containing cerium oxide of the present invention are listed, and are expressed in weight percentage (%).

[0038] Table 1

[0039]

[0040]

[0041] The preparation method of the sunscreen foam aerosol containing cerium oxide comprises the following steps:

[0042] S1. Mix the sunscreen agent and anhydrous ethanol evenly, and homogenize at a homogenizing speed of 8000 r / min for 5 minutes to obtain a mixed solution A;

[0043] S2. Dissolve PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, xanthan gum, sodium magnesium silicate, allantoin, di(PPG-2 myristeth-10) adipate, and PEG-75 shea butter glycerides in deionized water, stir evenly, and heat to 80° C., then add VP / hexadecene copolymer, ceteareth-25, sodium lauroyl glutamate, foaming agent, p-hydroxyacetophenone, o-cymene-5-ol, 1,2-hexanediol, and fragrance, and homogenize at a homogenizing speed of 6000 r / min for 5 min. Cool to 40° C. to obtain mixed solution B.

[0044] S3, adding the mixed solution A obtained in step S1 to the mixed solution B, mixing and homogenizing, and homogenizing at a homogenizing speed of 5000 r / min for 10 min to obtain a base liquid;

[0045] S4. Fill the base liquid into the aerosol can, then place the aerosol valve, seal it, fill it with propellant, test it in a water bath, code the bottom of the can, install the nozzle, and install the outer cover.

[0046] Comparative Example 1 A sunscreen foam aerosol containing cerium oxide and its preparation method

[0047] Compared with Example 2, the difference of Comparative Example 1 is that disodium phenyl dibenzimidazole tetrasulfonate in the sunscreen is replaced with ethylhexyl methoxycinnamate, and the other components and preparation methods are the same as those of Example 2. Comparative Example 2 A sunscreen foam aerosol containing cerium oxide and its preparation method

[0048] Compared with Example 2, the difference of Comparative Example 2 is that the cerium oxide in the sunscreen is replaced by zinc oxide, and the other components and preparation method are the same as those of Example 2.

[0049] Comparative Example 3: A sunscreen foam aerosol containing cerium oxide and its preparation method

[0050] Compared with Example 2, the difference of Comparative Example 3 is that the VP / hexadecene copolymer in the balloon-shaped tough wrapping film is replaced with polydimethylsiloxane, and the other components and preparation methods are the same as those of Example 3.

[0051] Comparative Example 4: A sunscreen foam aerosol containing cerium oxide and its preparation method

[0052] Compared with Example 2, the difference of Comparative Example 3 is that sodium lauryl glutamate in the solubilizing gas system is replaced by sodium lauryl sulfate, and the other components and preparation method are the same as those of Example 3.

[0053] Test Example 1: Determination of critical wavelength

[0054] 1. Test materials: sunscreen foam aerosols containing cerium oxide prepared in Examples 1 to 3 and Comparative Examples 1 to 4.

[0055] 2. Test method: Test in accordance with Chapter 4 Physical and Chemical Testing Methods - 1.9 Instrumental Determination of UVA Resistance of Cosmetics of the Technical Specifications for Safety of Cosmetics (2015 Edition).

[0056] 3. Test results

[0057] The test results are shown in Table 2.

[0058] Table 2 Critical wavelength (nm)

[0059] Group Critical wavelength (nm) Example 1 371 Example 2 378 Example 3 375 Comparative Example 1 354 Comparative Example 2 363 Comparative Example 3 369 Comparative Example 4 370

[0060] As can be seen from Table 2, the critical wavelengths of the sunscreen foam aerosols prepared in Examples 1 to 3 are all above 370 nm. According to the "Management Requirements for Sunscreen Effect Labeling of Sunscreen Cosmetics", when the critical wavelength (CW) of a sunscreen cosmetic is greater than or equal to 370 nm, it can be labeled with a broad-spectrum sunscreen effect.

[0061] Test Example 2: SPF Value Determination

[0062] 1. Test materials: sunscreen foam aerosols containing cerium oxide prepared in Examples 1 to 3 and Comparative Examples 1 to 4.

[0063] 2. Test method: Test in accordance with Chapter 8 of the Technical Specifications for Safety of Cosmetics (2015 Edition), "Test Methods for Human Efficacy Evaluation" - 2. Determination of Sun Protection Index (SPF) of Sunscreen Cosmetics.

[0064] 3. Test results

[0065] The test results are shown in Table 3.

[0066] Table 3 Comparison of SPF values of different test samples

[0067] Group SPF measured value Example 1 32 Example 2 35.4 Example 3 33.5 Comparative Example 1 27 Comparative Example 2 28 Comparative Example 3 30.4 Comparative Example 4 29

[0068] As shown in Table 3, the sunscreen foam aerosol containing cerium oxide prepared by the present invention innovatively uses a specific chemical sunscreen in combination with a physical cerium oxide sunscreen, and has a good sunscreen effect. The measured SPF value of Example 2 can reach 35.4, which can protect the skin from the damage of ultraviolet rays and blue light. In addition, combined with the aerosol packaging, the base liquid is released in the form of milky foam, accompanied by a unique crackling sound, which not only effectively improves the sunscreen effect of the aerosol, but also enriches the characteristics of the product.

[0069] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A sunscreen foam aerosol containing cerium oxide, characterized in that: The invention comprises the following components and their weight percentages: 1-5% of PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerol, 0.03-3% of a balloon-shaped tough wrapping film, 0.01-0.1% of o-cymene-5-ol, 0.05-0.4% of allantoin, 7.01-31% of a solubilizing gas system, 1-14% of a foaming agent, 0.1-2.5% of cetearyl alcohol polyether-25, 0.6-28.5% of a sunscreen, 0.1-2% of di(PPG-2 myristeth-10) adipate, 0.1-3% of PEG-75 shea butter glycerides, 0.05-0.15% of p-hydroxyacetophenone, 0.1-0.5% of a fragrance, 0.1-3% of 1,2-hexanediol, 10-55% of a propellant, and deionized water is added to 100%; The balloon-shaped tough wrapping film is composed of xanthan gum, sodium magnesium silicate and VP / hexadecene copolymer in a weight ratio of 0.1-5:0.1-10:0.1-15; The solubilizing gas system is composed of anhydrous ethanol, PEG / PPG-14 / 7 dimethyl ether and sodium lauroyl glutamate in a weight ratio of 6-25:1-5:0.01-1; The sunscreen is composed of cerium oxide, octocrylene, ethylhexyl methoxycinnamate, diethylhexyl butyramido triazone, disodium phenyl dibenzimidazole tetrasulfonate, and bis-ethylhexyloxyphenol methoxyphenyl triazine in a weight ratio of 0.1-10:0.1-5:0.1-5:0.1-3:0.1-2.5:0.1-3.

2. The sunscreen foam aerosol containing cerium oxide according to claim 1, wherein The following components and their weight percentages composition: PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin 2%, balloon form toughening film 1.5%, o-cymene-5-ol 0.05%, allantoin 0.3%, solubilizing gas system 13.5%, foaming agent 5%, ceteareth-25 1.5%, sunscreen 15%, di(PPG-2 myreth-10) adipate 1.5%, PEG-75 shea butter glycerides 1%, parahydroxyacetophenone 0.08%, fragrance 0.2%, 1,2-hexanediol 0.5%, propellant 25%, deionized water 32.87%.

3. The sunscreen foam aerosol containing cerium oxide according to claim 1, wherein The balloon-shaped tough wrapping film is composed of xanthan gum, sodium magnesium silicate and VP / hexadecene copolymer in a weight ratio of 0.2:0.8:0.

5.

4. The sunscreen foam aerosol containing cerium oxide according to claim 1 or 2, characterized in that: The foaming agent consists of lauryl glucoside and capryloyl / caprylamidopropyl betaine in a weight ratio of 0.5-6:0.5-8.

5. The sunscreen foam aerosol containing cerium oxide according to claim 1 or 2, characterized in that: The propellant is one of dimethyl ether, liquefied petroleum gas, 1,1-difluoroethane, 1,1,1,2-tetrafluoroethane, and HFO-1234ze.

6. A method for preparing a sunscreen foam aerosol containing cerium oxide according to any one of claims 1 to 5, characterized in that: The method comprises the following preparation steps: S1. Mix the sunscreen agent and anhydrous ethanol evenly and homogenize to obtain a mixed solution A; S2. Dissolve PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, PEG / PPG-14 / 7 dimethyl ether, xanthan gum, sodium magnesium silicate, allantoin, di(PPG-2 myristeth-10) adipate, and PEG-75 shea butter glycerides in deionized water, stir evenly, and heat to 80-85° C., then add VP / hexadecene copolymer, ceteareth-25, sodium lauroyl glutamate, a foaming agent, and p-hydroxyacetophenone, stir evenly, cool to 40-45° C., then add o-cymene-5-ol, 1,2-hexanediol, and flavor, homogenize, and stir evenly to obtain a mixed solution B; S3, adding the mixed solution A obtained in step S1 to the mixed solution B, mixing and homogenizing to obtain a base solution; S4. Fill the base liquid into the aerosol can, then place the aerosol valve, seal it, fill it with propellant, test it in a water bath, code the bottom of the can, install the nozzle, and install the outer cover.

7. The method for preparing the sunscreen foam aerosol containing cerium oxide according to claim 6, wherein: The homogenizing speed in steps S1 and S2 is 3000-8000 r / min, and the homogenizing time is 3-5 min; the homogenizing speed in S3 is 3000-8000 r / min, and the homogenizing time is 5-10 min.

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