Rare earth composite sunscreen care composition and preparation method thereof

Abstract

The invention discloses a rare earth composite sunscreen care composition and a preparation method thereof.The rare earth composite sunscreen care composition is prepared by mixing rare earth composite powder, a skin care matrix, a preservative, an antioxidant and essence, and the rare earth composite powder is prepared by compounding Yb3O2, CeO2, CeLA, polydimethylsiloxane and natural shell powder / pearl powder; the skin care matrix is formed by compounding an emulsifier, a thickening agent and a humectant. The sunscreen effect is remarkable, UVA and UVB can be effectively blocked, and damage of ultraviolet rays to the skin is reduced; the durability is high, and falling is not prone to occurring; the skin care function is achieved, and the skin resistance can be improved; the skin care product is high in safety, non-irritant and suitable for various skin types.

Description

Technical Field

[0001] The invention belongs to the technical field of rare earth material application, and particularly relates to a rare earth composite sunscreen care composition and a preparation method thereof. Background Art

[0002] As people's awareness of skin health and sun protection increases, the market demand for sunscreen care products is growing. Consumers not only pursue the sun protection effect of products, but also expect the products to have durability and skin care functions. However, existing sunscreen products still need to be improved in these aspects and cannot fully meet the needs of the market. Rare earth elements have shown wide application potential in many fields due to their unique optical, electrical and magnetic properties. Applying rare earth elements to sunscreen care products is expected to significantly improve the sun protection performance and skin care effects of the products.

[0003] The metal components contained in rare earth elements can absorb ultraviolet rays and reduce direct damage to the skin. At the same time, they can also act as a physical barrier to protect the skin from environmental factors. In addition, rare earth elements also have antioxidant properties, which can neutralize free radicals and reduce the skin's oxidative stress response caused by ultraviolet rays, thereby protecting skin cells. In terms of skin care, rare earth elements can promote the metabolism of skin cells and enhance the skin's self-repair ability. Long-term use can help improve skin quality and make the skin healthier and more vibrant.

[0004] Although rare earth elements have great potential in sun care products, their application still needs to overcome some challenges. For example, how to ensure the stability and safety of rare earth elements, and how to optimize the formulation to improve the overall performance of the product. Researchers are exploring solutions to these problems in order to develop more effective and safer sun care products. With the advancement of technology and the continuous evolution of consumer demand, the application of rare earth elements in sun care products has broad prospects and is expected to bring revolutionary changes to the sun care products market. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a rare earth composite sunscreen care composition.

[0006] Another object of the present invention is to provide a method for preparing the rare earth composite sunscreen care composition.

[0007] The technical solution of the present invention is as follows:

[0008] A rare earth composite sunscreen care composition is prepared by mixing raw materials including rare earth composite powder, skin care matrix, preservative, antioxidant and essence, wherein:

[0009] Rare earth composite powder is made of Yb3O2, CeO2, CeLA and natural shell powder / pearl powder;

[0010] The skin care matrix is ​​made up of emulsifiers, thickeners and moisturizers.

[0011] In a preferred embodiment of the present invention, the emulsifier is selected from castor oil, olive oil, potassium cetyl phosphate, PEG-100 stearate and glyceryl stearate.

[0012] In a preferred embodiment of the present invention, the thickener is selected from pectin, gelatin, sodium alginate, microcrystalline cellulose, cellulose gum and acrylic acid (ester) copolymers.

[0013] In a preferred embodiment of the present invention, the moisturizing agent is at least one of glycerin, sorbitol, propylene glycol, butylene glycol, sodium hyaluronate, hyaluronic acid, polysaccharides and panthenol.

[0014] In a preferred embodiment of the present invention, the preservative includes at least one of phenoxyethanol, organic acids and salts thereof, p-hydroxyacetophenone and hexylene glycol.

[0015] Further preferably, the organic acid and its salt include sodium benzoate, benzoic acid and sodium sorbate.

[0016] In a preferred embodiment of the present invention, the antioxidant is at least one of vitamin E and its derivatives, ascorbic acid and its derivatives, p-hydroxyacetophenone and ergothioneine.

[0017] In a preferred embodiment of the present invention, the flavor includes natural plant essential oils, natural plant extracts, flavors and fragrances.

[0018] In a preferred embodiment of the present invention, the mass ratio of Yb3O2, CeO2, CeLA, polydimethylsiloxane and natural shell powder / pearl powder is 2-5:2-5:2-10:1-4:5-10, and the mass ratio of the emulsifier, thickener and moisturizer is 2-6:1-3:5-10.

[0019] Further preferably, the mass ratio of the rare earth composite powder to the skin care matrix is ​​16-29:8-17.

[0020] The preparation method of the rare earth composite sunscreen care composition comprises the following steps:

[0021] (1) Preparation of rare earth composite powder: Y3O2, CeO2, CeLA, polydimethylsiloxane and natural shell powder / pearl powder are mixed and ground to form a uniform powder, and then subjected to ultrasonic oscillation treatment for 30-90 minutes to obtain rare earth composite powder;

[0022] (2) Preparation of skin care matrix: stirring an emulsifier, a thickener, a moisturizer and deionized water until a stable emulsified matrix is ​​formed, thereby obtaining a skin care matrix;

[0023] (3) Adding rare earth sunscreen composite powder: slowly adding the rare earth composite powder prepared in step (1) to the skin care matrix prepared in step (2), and continuing to stir to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix;

[0024] (4) Mixing and homogenizing: adding preservatives, antioxidants and flavors to the material obtained in step (3), homogenizing the material until the product is in a uniform and stable emulsion state, and then cooling, maturing, filtering and packaging the product in sequence.

[0025] The beneficial effects of the present invention are: the present invention has significant sun protection effect, can effectively block UVA and UVB, and reduce the damage of ultraviolet rays to the skin; it has strong durability and is not easy to fall off; it has skin care function and can improve skin resistance; it is highly safe, non-irritating, and suitable for all skin types. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further illustrated and described below through specific implementation methods.

[0027] Example 1

[0028] (1) Preparation of rare earth composite powder: 5 parts of Y3O2, 5 parts of CeO2, 2 parts of CeLA, 2 parts of polydimethylsiloxane and 5 parts of natural shell powder were weighed and put into a mortar, and the mixture was gently ground into a uniform powder using the mortar, and then transferred into a container and treated with an ultrasonic oscillator for 30 minutes to obtain a rare earth composite powder R1;

[0029] (2) Preparation of a skin care matrix: Add 2 parts of castor oil, 1 part of pectin and 5 parts of glycerin by weight into a stirring container, then add deionized water, start the stirrer, stir at a low speed until completely dissolved, and then gradually increase the stirring speed until a stable emulsified matrix is ​​formed, thereby obtaining a skin care matrix H1;

[0030] (3) Adding rare earth sunscreen composite powder: slowly add the rare earth composite powder R1 prepared in step (1) into the skin care matrix H1 prepared in step (2), and continue stirring to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix without agglomeration to obtain E1;

[0031] (4) Mixing and homogenizing: Add 0.1 parts of sodium benzoate, 0.2 parts of vitamin E and 0.1 parts of natural plant essential oil to the E1 obtained in step (3) by weight, and use a high shear dispersing emulsifier to homogenize until the product is in a uniform and stable emulsion state, and then cool, mature, filter and package in sequence to obtain the rare earth composite sunscreen care product Re1.

[0032] Example 2

[0033] (1) Preparation of rare earth composite powder: 5 parts of Y3O2, 2 parts of CeO2, 6 parts of CeLA, 3 parts of polydimethylsiloxane and 5 parts of pearl powder were weighed and put into a mortar, and the mixture was gently ground into a uniform powder using the mortar, and then transferred into a container and treated with an ultrasonic oscillator for 60 minutes to obtain a rare earth composite powder R2;

[0034] (2) Preparation of a skin care matrix: Add 3 parts of potassium cetyl phosphate, 2 parts of cellulose gum and 5 parts of sorbitol by weight into a stirring container, then add deionized water, start the stirrer, stir at a low speed until completely dissolved, and then gradually increase the stirring speed until a stable emulsified matrix is ​​formed, thereby obtaining a skin care matrix H2;

[0035] (3) Addition of rare earth sunscreen composite powder: Slowly add the rare earth composite powder R2 prepared in step (1) into the skin care matrix H2 prepared in step (2), and continue stirring to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix without agglomeration to obtain E2.

[0036] (4) Mixing and homogenizing: Add 0.1 parts of benzoic acid, 0.1 parts of hexylene glycol, 0.5 parts of ascorbic acid and 0.5 parts of natural plant essential oil to E2 obtained in step (3) by weight, and use a high shear dispersing emulsifier to homogenize until the product is in a uniform and stable emulsion state, and then cool, mature, filter and package in sequence to obtain the rare earth composite sunscreen care product Re2.

[0037] Example 3

[0038] (1) Preparation of rare earth composite powder: 2 parts of Yb3O2, 4 parts of CeO2, 5 parts of CeLA, 1 part of polydimethylsiloxane and 8 parts of pearl powder were weighed and put into a mortar, and the mixture was gently ground into a uniform powder using the mortar. The mixture was then transferred into a container and treated with an ultrasonic oscillator for 30 min to obtain a rare earth composite powder R3.

[0039] (2) Preparation of a skin care matrix: In a stirring container, 3 parts of olive oil, 3 parts of glyceryl stearate, 1 part of gelatin, 2 parts of acrylic acid (ester) copolymers and 8 parts of propylene glycol were added by weight, followed by adding deionized water, starting the stirrer, stirring at a low speed until completely dissolved, and then gradually increasing the stirring speed until a stable emulsified matrix was formed, thereby obtaining a skin care matrix H3;

[0040] (3) Adding rare earth sunscreen composite powder: slowly adding the rare earth composite powder R3 prepared in step (1) into the skin care matrix H3 prepared in step (2), and continue stirring to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix without agglomeration to obtain E3;

[0041] (4) Mixing and homogenizing: Add 1 part of sodium sorbate, 1 part of ergothioneine, and 0.2 part of natural plant essential oil to E3 obtained in step (3) by weight, and use a high shear dispersing emulsifier to homogenize until the product presents a uniform and stable emulsion, and then cool, mature, filter and package in sequence to obtain the rare earth composite sunscreen care product Re3.

[0042] Example 4

[0043] (1) Preparation of rare earth composite powder: 2 parts of Y3O2, 3 parts of CeO2, 10 parts of CeLA, 4 parts of polydimethylsiloxane and 10 parts of natural shell powder were weighed and put into a mortar, and the mixture was gently ground into a uniform powder using the mortar, and then transferred into a container and treated with an ultrasonic oscillator for 90 minutes to obtain rare earth composite powder R4;

[0044] (2) Preparation of a skin care matrix: In a stirring container, 2 parts of potassium cetyl phosphate, 3 parts of PEG-100 stearate, 0.5 parts of pectin, 0.5 parts of microcrystalline cellulose and 5 parts of panthenol were added by weight, followed by adding deionized water, starting the stirrer, stirring at a low speed until completely dissolved, and then gradually increasing the stirring speed until a stable emulsified matrix was formed, thereby obtaining a skin care matrix H4;

[0045] (3) Adding rare earth sunscreen composite powder: slowly add the rare earth composite powder R4 prepared in step (1) into the skin care matrix H4 prepared in step (2), and continue stirring to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix without agglomeration to obtain E4;

[0046] (4) Mixing and homogenizing: Add 0.1 parts of benzoic acid, 0.1 parts of sodium sorbate, 0.1 parts of p-hydroxyacetophenone and 1 part of natural plant essential oil to the E4 obtained in step (3) by weight, and use a high shear dispersing emulsifier to homogenize until the product is in a uniform and stable emulsion state, and then cool, mature, filter and package in sequence to obtain the rare earth composite sunscreen care product Re4.

[0047] Embodiment 5:

[0048] (1) Preparation of rare earth composite powder: 3 parts of Yb3O2, 5 parts of CeO2, 2 parts of CeLA, 1 part of polydimethylsiloxane and 5 parts of natural shell powder were weighed in parts by weight and put into a mortar. The mixture was gently ground into a uniform powder using the mortar. The mixture was then transferred to a container and treated with an ultrasonic oscillator for 60 min to obtain a rare earth composite powder R5.

[0049] (2) Preparation of skin care matrix: In a stirring container, add 2 parts of potassium cetyl phosphate, 3 parts of cellulose gum and 10 parts of propylene glycol, by weight, and then add deionized water. Start the stirrer and stir at a low speed until completely dissolved. Then gradually increase the stirring speed until a stable emulsified matrix is ​​formed to obtain the skin care matrix H5.

[0050] (3) Addition of rare earth sunscreen composite powder: Slowly add the rare earth composite powder R5 prepared in step (1) into the skin care matrix H5 prepared in step (2), and continue stirring to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix without agglomeration to obtain E5.

[0051] (4) Mixing and homogenizing: Add 0.3 parts of phenoxyethanol, 0.5 parts of vitamin E and 0.3 parts of natural plant essential oil to the E5 obtained in step (3) by weight, and use a high shear dispersing emulsifier to homogenize until the product is in a uniform and stable emulsion state, and then cool, mature, filter and package in sequence to obtain the rare earth composite sunscreen care product Re5.

[0052] Comparative Example 1: (no rare earth, only natural shell powder)

[0053] (1) Preparation of rare earth-free composite powder: Weigh 1 part of polydimethylsiloxane and 5 parts of natural shell powder by weight and put them into a mortar. Use the mortar to gently grind until a uniform powder is formed. Then transfer it to a container and treat it with an ultrasonic oscillator for 60 minutes to obtain the rare earth-free composite powder R6.

[0054] (2) Preparation of skin care matrix: In a stirring container, add 2 parts of potassium cetyl phosphate, 3 parts of cellulose gum and 10 parts of propylene glycol, by weight, and then add deionized water. Start the stirrer and stir at a low speed until completely dissolved. Then gradually increase the stirring speed until a stable emulsified matrix is ​​formed to obtain the skin care matrix H6.

[0055] (3) Addition of rare earth-free composite powder: Slowly add the rare earth-free composite powder R6 prepared in step (1) into the skin care matrix H6 prepared in step (2), and continue stirring to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix without agglomeration to obtain E6.

[0056] (4) Mixing and homogenizing: 0.3 parts by weight of phenoxyethanol, 0.5 parts by weight of vitamin E and 0.3 parts by weight of natural plant essential oil were added to the E6 obtained in step (3), and homogenized using a high shear dispersing emulsifier until the product is in a uniform and stable emulsion state, followed by cooling, aging, filtering and packaging in sequence to obtain the comparative sunscreen care product Re6.

[0057] Comparative Example 2: (Only one rare earth CeO2)

[0058] (1) Preparation of rare earth composite powder: 10 parts of CeO2, 1 part of polydimethylsiloxane and 5 parts of natural shell powder were weighed and put into a mortar, and the mixture was gently ground into a uniform powder using the mortar, and then transferred into a container and treated with an ultrasonic oscillator for 60 minutes to obtain rare earth composite powder R7;

[0059] (2) Preparation of skin care matrix: In a stirring container, 2 parts of potassium cetyl phosphate, 3 parts of cellulose gum and 10 parts of propylene glycol were added by weight, followed by deionized water, and the stirrer was started. The mixture was stirred at a low speed until it was completely dissolved, and then the stirring speed was gradually increased until a stable emulsified matrix was formed, thereby obtaining skin care matrix H7:

[0060] (3) Addition of rare earth composite powder: Slowly add the rare earth composite powder R7 prepared in step (1) into the skin care matrix H7 prepared in step (2), and continue stirring to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix without agglomeration to obtain E7.

[0061] (4) Mixing and homogenizing: 0.3 parts by weight of phenoxyethanol, 0.5 parts by weight of vitamin E and 0.3 parts by weight of natural plant essential oil were added to the E7 obtained in step (3), and homogenized using a high shear dispersing emulsifier until the product is in a uniform and stable emulsion state, and then cooled, aged, filtered and packaged in sequence to obtain the comparative sunscreen care product Re7.

[0062] Comparative Example 3: (The anti-ultraviolet agent is replaced with titanium dioxide TiO2 commonly used in the market)

[0063] (1) Preparation of titanium dioxide (TiO2) composite powder: 10 parts of TiO2, 1 part of polydimethylsiloxane and 5 parts of natural shell powder were weighed and put into a mortar, and the mixture was gently ground into a uniform powder using the mortar, and then transferred into a container and treated with an ultrasonic oscillator for 60 minutes to obtain titanium dioxide composite powder R8;

[0064] (2) Preparation of a skin care matrix: Add 2 parts of potassium cetyl phosphate, 3 parts of cellulose gum and 10 parts of propylene glycol by weight into a stirring container, then add deionized water, start the stirrer, stir at a low speed until completely dissolved, and then gradually increase the stirring speed until a stable emulsified matrix is ​​formed, thereby obtaining a skin care matrix H8;

[0065] (3) Adding titanium dioxide sunscreen composite powder: slowly add the titanium dioxide composite powder R8 prepared in step (1) into the skin care matrix H8 prepared in step (2), and continue stirring to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix without agglomeration to obtain E8;

[0066] (4) Mixing and homogenizing: Add 0.3 parts of phenoxyethanol, 0.5 parts of vitamin E and 0.3 parts of natural plant essential oil to the E8 obtained in step (3) by weight, and use a high shear dispersing emulsifier to homogenize until the product is in a uniform and stable emulsion state, and then cool, mature, filter and package in sequence to obtain the titanium dioxide composite sunscreen care product Re8.

[0067] Comparative Example 4: (without rare earth and natural shell powder)

[0068] (1) Preparation of skin care matrix: In a stirring container, add 2 parts of potassium cetyl phosphate, 3 parts of cellulose gum and 10 parts of propylene glycol, by weight, and then add deionized water. Start the stirrer and stir at a low speed until they are completely dissolved. Then gradually increase the stirring speed until a stable emulsified matrix is ​​formed to obtain the skin care matrix H9.

[0069] (2) Mixing and Homogenization: 0.3 parts by weight of phenoxyethanol, 0.5 parts by weight of vitamin E and 0.3 parts by weight of natural plant essential oil were added to the H9 obtained in step (1), and homogenized using a high shear dispersing emulsifier until the product was in a uniform and stable emulsion state, and then cooled, aged, filtered and packaged in sequence to obtain a comparative sunscreen care product Re9.

[0070] Sensory effect scoring: 60 volunteers were divided into 6 groups, and used the sunscreen care products prepared in Examples 1 to 5 and Comparative Examples 1 to 4 for 7 days, and were outdoor activities in the sun for no less than 1 hour every day. The sunscreen (≤40 points), comfort (≤30 points, and moisturizing (≤30 points) were scored, as shown in Table 1 below.

[0071] Table 1

[0072]

[0073]

[0074] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A rare earth composite sunscreen care composition, characterized in that: It is prepared by mixing raw materials including rare earth composite powder, skin care matrix, preservatives, antioxidants and flavors, among which: The rare earth composite powder is compounded from Yb3O2, CeO2, CeLA, polydimethylsiloxane and natural shell powder / pearl powder; the skin care matrix is ​​compounded from emulsifier, thickener and moisturizer.

2. A rare earth composite sunscreen care composition according to claim 1, characterized in that: The emulsifier is selected from castor oil, olive oil, potassium cetyl phosphate, PEG-100, stearic acid esters and glyceryl stearate.

3. A rare earth composite sunscreen care composition according to claim 1, characterized in that: The thickener is selected from pectin, gelatin, sodium alginate, microcrystalline cellulose, cellulose gum and acrylic acid (ester) copolymers.

4. A rare earth composite sunscreen care composition according to claim 1, characterized in that: The moisturizing agent is at least one of glycerin, sorbitol, propylene glycol, butylene glycol, sodium hyaluronate, hyaluronic acid, polysaccharides and panthenol.

5. A rare earth composite sunscreen care composition according to claim 1, characterized in that: The preservative includes at least one of phenoxyethanol, organic acids and salts thereof, p-hydroxyacetophenone and hexylene glycol.

6. A rare earth composite sunscreen care composition according to claim 5, characterized in that: The organic acids and their salts include sodium benzoate, benzoic acid and sodium sorbate.

7. A rare earth composite sunscreen care composition according to claim 1, characterized in that: The antioxidant is at least one of vitamin E and its derivatives, ascorbic acid and its derivatives, p-hydroxyacetophenone and ergothioneine.

8. A rare earth composite sunscreen care composition according to any one of claims 1 to 7, characterized in that: The mass ratio of the Yb3O2, CeO2, CeLA, polydimethylsiloxane and natural shell powder / pearl powder is 2-5:2-5:2-10:1-4:5-10, and the mass ratio of the emulsifier, thickener and moisturizer is 2-6:1-3:5-10.

9. A rare earth composite sunscreen care composition according to claim 8, characterized in that: The mass ratio of the rare earth composite powder to the skin care matrix is ​​16-29:8-17.

10. The method for preparing the rare earth composite sunscreen care composition according to any one of claims 1 to 9, characterized in that: The steps include: (1) Preparation of rare earth composite powder: Y3O2, CeO2, CeLA, polydimethylsiloxane and natural shell powder / pearl powder are mixed and ground to form a uniform powder, and then subjected to ultrasonic oscillation treatment for 30-90 minutes to obtain rare earth composite powder; (2) Preparation of skin care matrix: stirring an emulsifier, a thickener, a moisturizer and deionized water until a stable emulsified matrix is ​​formed, thereby obtaining a skin care matrix; (3) Adding rare earth sunscreen composite powder: slowly adding the rare earth composite powder prepared in step (1) to the skin care matrix prepared in step (2), and continuing to stir to ensure that the rare earth composite powder is evenly dispersed in the skin care matrix; (4) Mixing and homogenizing: Add preservatives, antioxidants and flavors to the material obtained in step (3) and homogenize. The product is then subjected to quality treatment until it becomes a uniform and stable emulsion, followed by cooling, maturation, filtration and packaging. You can get it.

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