Composition for improving tenderness and stability of sunscreen product and application of composition

Abstract

The invention relates to a composition for improving mildness and stability of a sunscreen product and application of the composition. The composition comprises a sphingomonas fermentation product extract, bis (lauramide glutamine) lysine sodium and a wild soybean seed extract. The invention creatively discovers that the three components of the sphingomonas fermentation product extract, the bis (lauramide glutamine) lysine sodium and the wild soybean seed extract are compounded for use, have a synergistic effect and can play a role under a low addition amount, so that the stability of the sunscreen product is improved, the irritation is reduced, the use experience is improved, and the sunscreen effect is improved. And moreover, the cost is effectively and reasonably reduced, and great market potential and economic value prospects are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of daily cosmetics, and particularly relates to a composition for improving the mildness and stability of sunscreen products and an application thereof. Background Art

[0002] Although the structure of children's skin is the same as that of adults, its functions are not fully developed and are still in an immature stage. The melanin in the skin can resist UV damage, but children's skin has less melanin than adults, so they are less able to resist UV rays. At the same time, children's skin is thin and soft, and the outer stratum corneum of their skin is a single layer of cells, lacking a transparent layer, so they are more susceptible to UV radiation burns. Based on the characteristics of children's skin, they need mild sunscreen products to protect their skin from UV rays during outdoor activities. At the same time, they should not let sunscreen products bring extra burden to the skin, and should also eliminate risks such as allergies.

[0003] CN119112692A discloses a children's sunscreen mousse composition and a preparation method thereof, wherein the children's sunscreen mousse composition comprises an agent and a propellant, wherein the agent comprises a phase A, a phase B, a phase C, a phase D, and a phase E, wherein the phase A comprises a first solvent, a chelating agent, a thickener, p-hydroxyacetophenone, and a moisturizer, and the thickener comprises xanthan gum; the phase B comprises oil, a first sunscreen, a sunscreen synergist, an emulsifier, an antioxidant, and a film former; the emulsifier comprises potassium cetyl phosphate and polyglycerol-10 laurate; the phase C comprises a second solvent and a second sunscreen, and the second sunscreen comprises at least one of terephthalylidene dicamphor sulfonic acid and methylene bis-benzotriazolyl tetramethylbutylphenol; the phase D comprises a preservative, a skin protectant, and a filler; and the phase E comprises a pH regulator and a third solvent. The children's sunscreen mousse composition has good mildness, sunscreen effect, and stability, and can also provide a dense mousse texture.

[0004] CN115300417A discloses a sunscreen suitable for children and sensitive skin and a preparation method thereof. The sunscreen suitable for children and sensitive skin includes an organic sunscreen, an emulsifier, a thickener, a moisturizer, a grease and a solvent; the emulsifier includes a water-soluble emulsifier and an oil-soluble emulsifier, and the thickener includes an aqueous thickener and an emulsifying thickener. The organic sunscreen is embedded in a shell with a polyhedral structure, thereby avoiding safety problems caused by the organic sunscreen penetrating into the skin. At the same time, due to the polyhedral structure of the shell, it can scatter ultraviolet rays and can be evenly dispersed on the skin surface, and the light protection ability of the sunscreen can be improved when the content of the organic sunscreen is equal. In terms of the components of the sunscreen, mild ingredients are used to ensure product safety. In terms of technology, the low-temperature addition process ensures product safety and stability.

[0005] There are two general types of mild children's sunscreen products in the prior art. One type is a sunscreen formula with macromolecular chemical sunscreens (molecular weight > 500D) as the main sunscreen. However, due to the large molecular weight and poor compatibility of such chemical sunscreens, they are prone to product instability when used in the formula. The other type is a children's sunscreen product based on physical sunscreens. However, due to the addition of a large amount of physical powders, such products have a high risk of formula stability, poor skin feel, strong closure and pore blockage, and it is difficult to obtain a good skin feel. Therefore, in the children's sunscreen formula, there is an urgent need for a reasonable and effective solution that can assist in improving the stability of the children's sunscreen formula, while ensuring and enhancing the mildness of the children's sunscreen formula, allowing the corresponding formula to reduce the amount of corresponding dispersed and stable ingredients added, so that children's sunscreen products can obtain a better use experience and higher mildness. Summary of the invention

[0006] In view of the deficiencies of the prior art, the object of the present invention is to provide a composition and application thereof for improving the mildness and stability of sunscreen products.

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a composition for improving the mildness and stability of a sunscreen product, the composition comprising a sphingomonas fermentation product extract, sodium di(laurylamideglutamine)lysine and a wild soybean seed extract.

[0009] The Sphingomonas (SPHINGOMONAS) fermentation product extract in the composition provided by the present invention is a natural polysaccharide derived from microbial fermentation, resistant to pH and electrolytes, resistant to high temperatures, and has good compatibility with physical and chemical sunscreens. A low addition amount can bring about the effects of film formation and stable emulsified formulas. At the same time, since it is a polymer itself and constructs a natural breathable film, it can also slow down penetration and reduce the irritation of the formula.

[0010] The sodium di(lauroyl glutamine) lysine is a unique natural bimolecular peptide emulsifier. A low addition amount can significantly improve the stability of the emulsification. At the same time, due to its own ceramide-like structure, it can construct a soft film, slow down penetration, enhance moisturizing, improve the mildness of the product and assist in improving the SPF value of sunscreen products.

[0011] The wild soybean (Glycine Soja) seed extract contains natural lysolecithin, the molecular structure of which is the same as that of the skin, and can reduce the interfacial tension between particles and the dispersion medium, and can help improve the emulsion stability, disperse powders, and at the same time improve the mildness of the formula.

[0012] The present invention creatively discovers that the combination of the above three ingredients has a synergistic effect and can exert its effect at a low addition amount, which not only improves the stability of sunscreen products, reduces irritation, and enhances the user experience, but also effectively and reasonably reduces costs, and has great market potential and economic value prospects.

[0013] Preferably, the mass ratio of the sphingomonas fermentation product extract, sodium di(laurylamideglutamine)lysine and soybean seed extract is (3-10):(0.1-3):(0.1-3).

[0014] Wherein "3-10" can be 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9 or 9.5, etc.;

[0015] The first "0.1-3" can be 0.2, 0.4, 0.6, 0.8, 1, 1.1, 1.3, 1.5, 1.7, 2, 2.1, 2.3, 2.5, 2.7 or 2.9, etc.;

[0016] The second "0.1-3" can be 0.2, 0.4, 0.6, 0.8, 1, 1.1, 1.3, 1.5, 1.7, 2, 2.1, 2.3, 2.5, 2.7 or 2.9, etc.

[0017] Preferably, the mass ratio of the sphingomonas fermentation product extract, sodium di(laurylamideglutamine)lysine and soybean seed extract is (5-8):(0.5-1.5):(0.5-1.5).

[0018] Specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0019] In a second aspect, the present invention provides a use of the composition for improving the mildness and stability of sunscreen products as described in the first aspect in the preparation of cosmetics.

[0020] Preferably, the cosmetics include sunscreen lotion, sunscreen cream, sunscreen milk or sunscreen water;

[0021] Preferably, the mass percentage of the composition for improving the mildness and stability of sunscreen products in the cosmetics is 0.05-5%, for example, it can be 0.2%, 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, 2%, 2.2%, 2.5%, 2.8%, 3%, 3.2%, 3.5%, 3.8%, 4%, 4.2%, 4.5% or 4.8%, etc.

[0022] Specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0023] In a third aspect, the present invention provides a low-irritation sunscreen for children, the components of which include the composition for improving the mildness and stability of sunscreen products as described in the first aspect, a sunscreen, a moisturizer, a thickener, a filler, an emollient, an emulsifier and water.

[0024] Preferably, the components of the low-irritation sunscreen for children include, by weight, 0.1-5 parts of the composition for improving the mildness and stability of sunscreen products as described in the first aspect, 5-25 parts of sunscreen, 5-20 parts of moisturizer, 0.1-1 parts of thickener, 0.1-3 parts of filler, 1-30 parts of emollient, 0.1-4 parts of emulsifier and 30-90 parts of water.

[0025] The added amount of the composition for improving the mildness and stability of sunscreen products in the low-irritation sunscreen for children of the present invention can be 0.2 parts, 0.5 parts, 0.8 parts, 1 parts, 1.2 parts, 1.5 parts, 1.8 parts, 2 parts, 2.2 parts, 2.5 parts, 2.8 parts, 3 parts, 3.2 parts, 3.5 parts, 3.8 parts, 4 parts, 4.2 parts, 4.5 parts or 4.8 parts, etc.;

[0026] The amount of the sunscreen added can be 6 parts, 8 parts, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts or 24 parts, etc.;

[0027] The amount of the moisturizer added can be 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts or 19 parts, etc.;

[0028] The thickener may be added in an amount of 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, etc.;

[0029] The amount of the filler added can be 0.2 parts, 0.5 parts, 0.8 parts, 1 part, 1.2 parts, 1.5 parts, 1.8 parts, 2 parts, 2.2 parts, 2.5 parts or 2.8 parts, etc.;

[0030] The amount of the emollient added can be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, etc.;

[0031] The amount of the emulsifier added can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 parts, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts, 2.2 parts, 2.5 parts, 2.8 parts, 3 parts, 3.2 parts, 3.5 parts, 3.8 parts, 4 parts, etc.;

[0032] The amount of water added can be 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts, 80 parts or 85 parts, etc.

[0033] Preferably, the sunscreen comprises a chemical sunscreen and / or a physical sunscreen.

[0034] Preferably, the chemical sunscreen comprises diethylhexyl butyramido triazone and / or bis-ethylhexyloxyphenol methoxyphenyl triazine.

[0035] Preferably, the physical sunscreen comprises zinc oxide.

[0036] Preferably, the humectant comprises glycerin and / or butylene glycol.

[0037] Preferably, the emollient comprises any one or a combination of at least two of dimethicone, cetyl ethylhexanoate, isononyl isononanoate, C14-22 alcohol, butyloctanol salicylate or C12-15 alcohol benzoate.

[0038] Preferably, when the sunscreen is a chemical sunscreen, the emollient is a combination of dimethicone, butyloctanol salicylate, C14-22 alcohol and C12-15 alcohol benzoate.

[0039] Preferably, the mass ratio of the polydimethylsiloxane, butyloctanol salicylate, C14-22 alcohol and C12-15 alcohol benzoate is (0.5-5):(5-15):(0.5-3):(5-8).

[0040] Wherein “0.5-5” can be 0.6, 0.8, 1, 1.2, 1.5, 1.8, 2, 2.2, 2.5, 2.8, 3, 3.1, 3.3, 3.5, 3.7, 3.9, 4, 4.1, 4.3, 4.5, 4.7 or 4.9, etc.;

[0041] “5-15” can mean 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14 or 14.5, etc.;

[0042] “0.5.-3” can be 0.6, 0.8, 1, 1.2, 1.5, 1.8, 2, 2.2, 2.5, 2.8 or 2.9, etc.;

[0043] “5-8” can be 5.2, 5.5, 5.8, 6, 6.2, 6.5, 6.8, 7, 7.2, 7.5 or 7.8, etc.

[0044] Preferably, when the sunscreen is a physical sunscreen, the emollient is a combination of dimethicone, cetyl ethylhexanoate and isononyl isononanoate.

[0045] Preferably, the mass ratio of the polydimethylsiloxane, cetyl ethylhexanoate and isononyl isononanoate is (5-13):(2-6):(0.5-2.5).

[0046] Wherein “5-13” may be 5.2, 5.5, 5.8, 6, 6.2, 6.5, 6.8, 7, 7.2, 7.5, 7.8, 8, 8.2, 8.5, 8.8, 9, 9.2, 9.5, 9.8, 10, 10.5, 11, 11.5, 12 or 12.5, etc.;

[0047] “2-6” can be 2.2, 2.5, 2.8, 3, 3.2, 3.5, 3.8, 4, 4.2, 4.5, 4.8, 5, 5.2, 5.5 or 5.8, etc.;

[0048] “0.5-2.5” can mean 0.6, 0.8, 1, 1.2, 1.4, 1.5, 1.6, 1.8, 2, 2.2 or 2.4, etc.

[0049] Preferably, the emulsifier includes any one of C12-20 alkyl glucoside, cetyl PEG / PPG-10 / 1 dimethicone or PEG-10 dimethicone, or a combination of at least two thereof.

[0050] Preferably, when the sunscreen is a chemical sunscreen, the emulsifier is C12-20 alkyl glucoside.

[0051] Preferably, when the sunscreen is a physical sunscreen, the emulsifier is a combination of cetyl PEG / PPG-10 / 1 dimethicone and PEG-10 dimethicone.

[0052] Preferably, the mass ratio of the cetyl PEG / PPG-10 / 1 polydimethylsiloxane to the PEG-10 polydimethylsiloxane is 1:(0.25-4), for example, it can be 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.8, 1:0.9, 1:1, 1:1.2, 1:1.5, 1:1.8, 1:2, 1:2.2, 1:2.5, 1:2.8, 1:3, 1:3.2, 1:3.5, 1:3.8 or 1:3.9, etc.

[0053] In the present invention, different emulsifier and moisturizer formulas are specially selected according to the different types of sunscreens in the sunscreen. The above-mentioned specific formula synergistic composition can not only reduce the amount of emulsifier and moisturizer used, but also further improve the stability of the formula, more effectively improve the mildness of the product, and make consumers feel better after use.

[0054] Preferably, the thickener includes any one of disteardimethylammonium hectorite, ammonium acryloyldimethyltaurate / VP copolymer or carbomer, or a combination of at least two thereof.

[0055] Preferably, the filler comprises silica and / or tapioca starch.

[0056] Preferably, the low-irritation sunscreen for children also includes antioxidants.

[0057] Preferably, the components of the low-irritation children's sunscreen also include 0.1-1 parts of antioxidants by weight, for example, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts or 0.9 parts, etc.

[0058] Preferably, the antioxidant comprises tocopherol acetate and / or p-hydroxyacetophenone.

[0059] Preferably, the components of the low-irritation sunscreen for children also include any one of a stabilizer, a pH adjuster, a preservative or a fragrance, or a combination of at least two of them.

[0060] Specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0061] In a fourth aspect, the present invention provides a method for preparing the low-irritation sunscreen for children as described in the third aspect, the method comprising:

[0062] (1) mixing an emollient, an emulsifier and a sunscreen to obtain an oil phase liquid;

[0063] Mixing the moisturizer and the thickener in water to obtain an aqueous phase liquid;

[0064] (2) The aqueous phase liquid and the oil phase liquid are mixed, and then a composition for improving the mildness and stability of the sunscreen product and a filler are added and mixed homogeneously to obtain the low-irritation sunscreen for children.

[0065] Preferably, the mixing temperature during the preparation of the oil phase or the water phase in step (1) is independently 80-90°C, for example, 81°C, 83°C, 85°C, 87°C or 89°C.

[0066] Preferably, the mixing during the preparation of the oil phase or the water phase in step (1) is carried out by stirring, and the stirring speed is independently 1000-2000 rpm, for example, it can be 1100 rpm, 1300 rpm, 1500 rpm, 1700 rpm or 1900 rpm.

[0067] Preferably, after the mixing in step (2), the mixture is cooled to 25-40°C (for example, 26°C, 28°C, 30°C, 32°C, 34°C, 36°C or 38°C, etc.) and then a composition for improving the mildness and stability of the sunscreen product is added.

[0068] Preferably, the rotation speed of the mixing and homogenizing in step (2) is 3000-5000 rpm, for example, it can be 3200 rpm, 3500 rpm, 3800 rpm, 4000 rpm, 4200 rpm, 4500 rpm or 4800 rpm, etc.

[0069] Preferably, the mixing and homogenizing in step (2) further includes adding any one or a combination of at least two of an antioxidant, a stabilizer, a preservative, a fragrance or a pH adjuster.

[0070] Specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0071] Compared with the prior art, the present invention has the following beneficial effects:

[0072] (1) The composition for improving the mildness and stability of sunscreen products provided by the present invention has a specific skin-friendly structure and natural film-forming properties through the auxiliary dispersion of natural polymers and the auxiliary emulsification of natural phospholipids and natural bimolecular peptides. It can be used in combination in physical or chemical sunscreen formulas to not only improve the mildness of sunscreen products, but also improve the stability of the formula.

[0073] (2) The sunscreen product of the present invention not only provides a better skin feel by compounding a composition that improves the mildness and stability of the sunscreen product with a specific emulsifier and oil (moisturizer), but also reduces the cost of adding emulsifiers and oils, thereby greatly enhancing the market prospects of sunscreen products. DETAILED DESCRIPTION

[0074] In order to further illustrate the technical means and effects of the present invention, the technical solution of the present invention is further described below in conjunction with the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Some of the materials and brand information involved in the following embodiments and comparative examples are as follows:

[0075]

[0076] The rest of the raw materials can be used as long as they are purchased from regular dealers.

[0077] Example 1

[0078] The present embodiment provides a composition for improving the mildness and stability of sunscreen products. The composition with skin soothing and repairing effects is a Sphingomonas fermentation product extract, sodium di(laurylamideglutamine) lysine, and wild soybean seed extract in a mass ratio of 7:1:1.

[0079] Example 2

[0080] The present embodiment provides a composition for improving the mildness and stability of sunscreen products. The composition with skin soothing and repairing effects is a Sphingomonas fermentation product extract, sodium di(laurylamideglutamine) lysine and wild soybean seed extract in a mass ratio of 8:0.5:1.5.

[0081] Example 3

[0082] The present embodiment provides a composition for improving the mildness and stability of sunscreen products. The composition with skin soothing and repairing effects is a Sphingomonas fermentation product extract, sodium di(laurylamideglutamine) lysine and wild soybean seed extract in a mass ratio of 5:1.5:0.5.

[0083] Example 4

[0084] The present embodiment provides a composition for improving the mildness and stability of sunscreen products. The composition with skin soothing and repairing effects is a Sphingomonas fermentation product extract, sodium di(laurylamideglutamine) lysine and wild soybean seed extract in a mass ratio of 10:0.5:2.

[0085] Example 5

[0086] The present embodiment provides a composition for improving the mildness and stability of sunscreen products. The composition with skin soothing and repairing effects is a Sphingomonas fermentation product extract, sodium di(laurylamideglutamine) lysine and wild soybean seed extract in a mass ratio of 4:2:1.

[0087] Comparative Example 1

[0088] This comparative example provides a composition for improving the mildness and stability of sunscreen products. The composition with skin soothing and repairing effects is a Sphingomonas fermentation product extract and a wild soybean seed extract in a mass ratio of 7:1.

[0089] Comparative Example 2

[0090] This comparative example provides a composition for improving the mildness and stability of sunscreen products. The composition with skin soothing and repairing effects is a Sphingomonas fermentation product extract and sodium di(lauroyl glutamine) lysine in a mass ratio of 7:1.

[0091] Comparative Example 3

[0092] This comparative example provides a composition for improving the mildness and stability of a sunscreen product. The composition with skin soothing and repairing effects is sodium di(lauroyl glutamine) lysine and wild soybean seed extract in a mass ratio of 1:1.

[0093] Application Examples 1-4

[0094] This application example provides four low-irritation sunscreens for children, and their formulas (contents are in parts) are as follows:

[0095]

[0096]

[0097] Its preparation method is:

[0098] (1) mixing an emollient, an emulsifier and a sunscreen at 85° C. and 1500 rpm to obtain an oil phase liquid;

[0099] (2) heating water to 85° C., then adding a humectant and a thickener and mixing at 1500 rpm to obtain an aqueous phase liquid;

[0100] (3) The aqueous phase liquid and the oil phase liquid are mixed, cooled to 35° C., and then a composition for improving the mildness and stability of the sunscreen product, a filler, an antioxidant, a filler, and a pH adjuster (replaced with a stabilizer in Application Example 4) are added, and the mixture is mixed and homogenized at 4000 rpm to obtain the low-irritation children's sunscreen.

[0101] Application Example 5

[0102] This application example provides a low-irritation sunscreen for children, the formula of which is different from that of application example 1 only in that the composition of example 1 is replaced with an equal amount of the composition of example 4, and the other ingredients and contents remain unchanged. The preparation method is similar to that of application example 1.

[0103] Application Example 6

[0104] This application example provides a low-irritation sunscreen for children, the formula of which is different from that of application example 1 only in that the composition of example 1 is replaced with an equal amount of the composition of example 5, and the other ingredients and contents remain unchanged. The preparation method is similar to that of application example 1.

[0105] Application Example 7

[0106] This application example provides a low-irritation sunscreen for children, the formula of which differs from that of application example 1 only in that polydimethylsiloxane is not included in the emollient, and the reduced amount is supplemented by butyl octanol salicylate, C14-22 alcohol and C12-15 alcohol benzoate in proportion, while other ingredients and contents remain unchanged. The preparation method is referred to application example 1.

[0107] Application Example 8

[0108] This application example provides a low-irritation sunscreen for children, the formula of which differs from that of application example 1 only in that butyl octanol salicylic acid is not included in the emollient, and the reduced amount is supplemented by polydimethylsiloxane ester, C14-22 alcohol and C12-15 alcohol benzoate in proportion, and the other ingredients and contents remain unchanged. The preparation method is referred to application example 1.

[0109] Application Example 9

[0110] This application example provides a low-irritation sunscreen for children, the formula of which differs from that of application example 1 only in that the emollient does not include C14-22 alcohol, and the reduced amount is supplemented by polydimethylsiloxane ester, butyloctanol salicylic acid and C12-15 alcohol benzoate in proportion, while the other ingredients and contents remain unchanged. The preparation method is referred to application example 1.

[0111] Application Example 10

[0112] This application example provides a low-irritation sunscreen for children, the formula of which differs from that of application example 1 only in that the emollient does not include C12-15 alcohol benzoate, and the reduced amount is supplemented by polydimethylsiloxane ester, butyloctanol salicylic acid and C14-22 alcohol in proportion, and the other ingredients and contents remain unchanged. The preparation method is referred to application example 1.

[0113] Application Example 11

[0114] This application example provides a low-irritation sunscreen for children, the formula of which differs from that of application example 4 only in that polydimethylsiloxane is not included in the emollient, and the reduced amount is supplemented by cetyl ethylhexanoate and isononyl isononanoate in proportion, and the other ingredients and contents remain unchanged. The preparation method is referred to application example 1.

[0115] Application Example 12

[0116] This application example provides a low-irritation sunscreen for children, the formula of which differs from that of application example 4 only in that the emollient does not include cetyl ethylhexanoate, and the reduced amount is supplemented by polydimethylsiloxane and isononyl isononanoate in proportion, while the other ingredients and contents remain unchanged. The preparation method is the same as that of application example 1.

[0117] Application Example 13

[0118] This application example provides a low-irritation sunscreen for children, the formula of which differs from that of application example 4 only in that isononyl isononanoate is not included in the emollient, and its reduced amount is supplemented by polydimethylsiloxane and cetyl ethylhexanoate in proportion, and other ingredients and contents remain unchanged. The preparation method is referred to application example 1.

[0119] Application Example 14

[0120] This application example provides a low-irritation sunscreen for children, the formula of which is different from that of application example 4 only in that the emulsifier is only cetyl PEG / PPG-10 / 1 polydimethylsiloxane, and the amount of the emulsifier is kept unchanged, and the other ingredients and contents remain unchanged. The preparation method is referred to application example 1.

[0121] Application Example 15

[0122] This application example provides a low-irritation sunscreen for children, the formula of which is different from that of application example 4 in that the emulsifier is only PEG-10 polydimethylsiloxane, and the amount of the emulsifier is kept unchanged, and the other ingredients and contents remain unchanged. The preparation method is referred to application example 1.

[0123] Comparative Application Examples 1-3

[0124] This comparative application example provides three low-irritation sunscreens for children, the formulas of which differ from those of application example 1 only in that the composition of example 1 is replaced with the compositions of comparative examples 1-3 in equal amounts, and the other ingredients and contents remain unchanged. The preparation method is the same as that of application example 1.

[0125] Comparative Application Examples 4-6

[0126] This comparative application example provides three low-irritation sunscreens for children, the formulas of which differ from those of application example 4 only in that the composition of example 1 is replaced with the compositions of comparative examples 1-3 in equal amounts, and the other ingredients and contents remain unchanged. The preparation method is the same as that of application example 1.

[0127] Test Example 1: Stability Test

[0128] The stability test includes high temperature, low temperature and hot and cold cycle test. The samples provided by Application Examples 1-15 and Comparative Application Examples 1-6 are placed at -16℃, 25℃ and 45℃ for 3 months respectively, and the appearance of the products is regularly observed to see if there are abnormal phenomena such as turbidity and stratification. After the products are subjected to hot and cold cycle at -16℃~25℃~45℃ for 3 times, they are observed to see if there are abnormal phenomena such as turbidity and stratification. The test results are shown in Table 1.

[0129] Table 1

[0130]

[0131]

[0132] It can be seen from the data in Table 1 that the product provided by the present invention has excellent high and low temperature stability, and the formula of the emollient, emulsifier and composition has a certain influence on the stability of the product.

[0133] Test Example 2

[0134] Sunscreen performance evaluation

[0135] Test method: Apply the sample to Gafchromic film (Application Example 1-15 and Comparative Application Example 1-6, dosage 2 mg / cm 2 ), put it into an irradiation box simulating sunlight for irradiation. The charge number in the film measures the performance change of the material after irradiation, and then the irradiated film is analyzed and processed by FilmQAPro software under the standard curve.

[0136] Gafchromic film: Approximately equivalent to skin tissue, medical-grade accuracy, average effective nuclear charge number Zeff = 6.8, human skin Zeff = 7.4. The charge number in the film is used to measure the performance change of the material after radiation exposure, and through system analysis. The film is divided into two types: HD-V2 (for testing SPF value) and EBT-3 (for testing PA value).

[0137] Standard curve: Under the UVA / UVB standard curve, the sample sun protection value analysis is carried out. The results are shown in Table 2.

[0138] Table 2

[0139]

[0140]

[0141] It can be seen from the data in Table 2 that the sunscreen to which the composition of the present invention is added can effectively stabilize the sun protection index under the premise of reducing the use of sunscreen agents by a small amount. In contrast, in comparative application examples 1-6, when the composition lacks any one of the extract of sphingomonas fermentation product, sodium di(laurylamideglutamine)lysine and wild soybean seed extract, the sun protection value and PA value of the product are significantly reduced.

[0142] Test Example 3 Consumer Sensory Effect Evaluation

[0143] 126 volunteers aged 30-35 and aged 12-15 were selected as test subjects and randomly divided into 21 groups, 6 people in each group. Test method: The test subjects used the products of application examples 1-15 and comparative application examples 1-6 respectively, once every morning for 15 consecutive days. After the use, the test subjects scored the use effect using a 10-point system: 9 points or more means very good, very satisfied; 8-9 points are good; 7-8 points are medium and acceptable; below 7 points are not good, unacceptable. The score of each group is the average of 6 people, and the results are shown in Table 3.

[0144] Table 3

[0145]

[0146]

[0147] It can be seen from Table 3 that the product of the present invention has good use effect, is less irritating, has better comfort, and has better sun protection effect.

[0148] It can be seen from comparative application examples 1-6 that the extract of Sphingomonas fermentation product, sodium di(laurylamideglutamine)lysine and wild soybean seed extract have a synergistic effect in improving comfort and sun protection effect.

[0149] Test Example 4

[0150] Safety evaluation:

[0151] The specific method is as follows: 40 females aged 18-35 years old with no history of allergies were selected, and each subject tried the product prepared in Application Examples 1-15. After cleaning the back of the subject, the spot tester with the sample was applied to the selected position on the back with a non-irritating tape, and after pasting, it was lightly pressed with fingers to make it evenly attached to the skin for 24 hours. The subject kept the patch area dry within 24 hours, and avoided intense exercise, scratching the patch area, long-term sunlight exposure, etc. After 24 hours, the tester was removed and marked, and after 30 minutes, the indentation disappeared and the judgment was made under sufficient light.

[0152] The grading standards for adverse skin reactions are shown in Table 4:

[0153] Table 4

[0154]

[0155]

[0156] The results are shown in Table 5:

[0157] Table 5

[0158]

[0159]

[0160] It can be seen from the data in Table 5 that all the subjects had negative reactions, which indicates that the product of the present invention has no adverse reactions to the human body and is highly safe.

[0161] The applicant declares that the present invention uses the above-mentioned embodiments to illustrate a composition for improving the mildness and stability of sunscreen products and its application, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary ingredients, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0162] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0163] 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 further describe various possible combinations.

Claims

1. A composition for improving the mildness and stability of a sunscreen product, characterized in that: The composition comprises a sphingomonas fermentation product extract, sodium di(laurylamideglutamine)lysine and a soybean seed extract.

2. The composition having skin soothing and repairing effects as claimed in claim 1, characterized in that: The mass ratio of the sphingomonas fermentation product extract, sodium di(laurylamideglutamine)lysine and soybean seed extract is (3-10):(0.1-3):(0.1-3); Preferably, the mass ratio of the sphingomonas fermentation product extract, sodium di(laurylamideglutamine)lysine and soybean seed extract is (5-8):(0.5-1.5):(0.5-1.5).

3. Use of the composition for improving the mildness and stability of sunscreen products as claimed in claim 1 or 2 in the preparation of cosmetics.

4. The use according to claim 3, characterized in that The cosmetics include sunscreen lotion, sunscreen cream, sunscreen milk or sunscreen water; Preferably, the composition for improving the mildness and stability of sunscreen products has a mass percentage of 0.05-5% in the cosmetic.

5. A low-irritation sunscreen for children, characterized in that: The components of the low-irritation sunscreen for children include the composition for improving the mildness and stability of sunscreen products as claimed in claim 1 or 2, a sunscreen, a moisturizer, a thickener, a filler, an emollient, an emulsifier and water.

6. The low-irritation sunscreen for children according to claim 5, characterized in that: The components of the low-irritation sunscreen for children include, by weight, 0.1-5 parts of the composition for improving the mildness and stability of sunscreen products as claimed in claim 1 or 2, 5-25 parts of sunscreen, 5-20 parts of moisturizer, 0.1-1 part of thickener, 0.1-3 parts of filler, 1-30 parts of emollient, 0.1-4 parts of emulsifier and 30-90 parts of water.

7. The low-irritation sunscreen for children according to claim 5 or 6, characterized in that: The sunscreen includes chemical sunscreen and / or physical sunscreen; Preferably, the chemical sunscreen comprises diethylhexyl butyramido triazone and / or bis-ethylhexyloxyphenol methoxyphenyl triazine; Preferably, the physical sunscreen comprises zinc oxide.

8. The low-irritation sunscreen for children according to claim 7, characterized in that: The humectant includes glycerin and / or butylene glycol; Preferably, the emollient comprises any one or a combination of at least two of dimethicone, cetyl ethylhexanoate, isononyl isononanoate, C14-22 alcohol, butyloctanol salicylate or C12-15 alcohol benzoate; Preferably, when the sunscreen is a chemical sunscreen, the emollient is a combination of dimethicone, butyloctanol salicylate, C14-22 alcohol and C12-15 alcohol benzoate; Preferably, when the sunscreen is a physical sunscreen, the emollient is a combination of dimethicone, cetyl ethylhexanoate and isononyl isononanoate; Preferably, the emulsifier comprises any one or a combination of at least two of C12-20 alkyl glucoside, cetyl PEG / PPG-10 / 1 dimethicone or PEG-10 dimethicone; Preferably, when the sunscreen is a chemical sunscreen, the emulsifier is a C12-20 alkyl glucoside; Preferably, when the sunscreen is a physical sunscreen, the emulsifier is a combination of cetyl PEG / PPG-10 / 1 dimethicone and PEG-10 dimethicone; Preferably, the thickener comprises any one or a combination of at least two of disteardimethylammonium hectorite, ammonium acryloyldimethyltaurate / VP copolymer or carbomer; Preferably, the filler comprises silica and / or tapioca starch; Preferably, the components of the low-irritation sunscreen for children also include antioxidants; Preferably, the components of the low-irritation sunscreen for children also include 0.1-1 parts of antioxidants by weight; Preferably, the antioxidant comprises tocopherol acetate and / or p-hydroxyacetophenone; Preferably, the components of the low-irritation sunscreen for children also include any one of a stabilizer, a pH adjuster, a preservative or a fragrance, or a combination of at least two of them.

9. A method for preparing a low-irritation sunscreen for children as claimed in any one of claims 5 to 8, characterized in that: The method comprises: (1) mixing an emollient, an emulsifier and a sunscreen to obtain an oil phase liquid; Mixing the moisturizer and the thickener in water to obtain an aqueous phase liquid; (2) The aqueous phase liquid and the oil phase liquid are mixed, and then a composition for improving the mildness and stability of the sunscreen product and a filler are added and mixed homogeneously to obtain the low-irritation sunscreen for children.

10. The preparation method according to claim 9, characterized in that: The mixing temperature during the preparation of the oil phase or the water phase in step (1) is independently 80-90° C.; Preferably, the mixing during the preparation of the oil phase or the water phase in step (1) is performed by stirring, and the stirring speed is independently 1000-2000 rpm; Preferably, in step (2), after the mixture is cooled to 25-40° C., a composition for improving the mildness and stability of the sunscreen product is added; Preferably, the speed of the mixing and homogenizing in step (2) is 3000-5000 rpm; Preferably, the mixing and homogenizing in step (2) further comprises adding any one or a combination of at least two of an antioxidant, a stabilizer, a preservative, a fragrance or a pH adjuster.

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