Cosmetic sunscreen compositions, use of hydroxyapatite, and use of a cosmetic sunscreen composition

Abstract

Cosmetic Sunscreen Compositions, Use of Hydroxyapatite, and Use of a Cosmetic Sunscreen Composition. The present invention relates to a cosmetic sunscreen composition comprising (a) at least one organic UV filter; (b) at least one polymer; (c) at least one surfactant; and (d) hydroxyapatite. The invention also relates to the use of hydroxyapatite to improve the SPF of cosmetic sunscreen compositions and the use of said cosmetic sunscreen composition. Figure for abstract: none

Description

Title of the invention: Cosmetic sunscreen compositions, use of a hydroxyapatite and use of a cosmetic sunscreen composition FIELD OF INVENTION

[0001] The present invention relates to a cosmetic sunscreen composition with an improved SPF, comprising (a) at least one organic UV filter; (b) at least one polymer; (c) at least one surfactant; and (d) hydroxyapatite. The invention also relates to the use of hydroxyapatite to improve the SPF of cosmetic sunscreen compositions and to the use of said cosmetic sunscreen composition. CONTEXT OF THE INVENTION

[0002] Photoprotection of keratinous materials is considered of great importance in order to ensure protection against damage caused by the sun, sunburn, photoaging, as well as to reduce the risks of developing skin cancer caused by exposure to ultraviolet (“UV”) radiation.

[0003] The degree of UV protection offered by a sunscreen composition is directly related to the quantity and type of UV filters it contains. In particular, sunscreen compositions must offer good protection against the sun, one measure of which is the sun protection factor (SPF) value.

[0004] This value is the most important property for sunscreen compositions, and it is highly desirable to offer compositions with higher SPF values. Therefore, there is a need for sunscreen compositions with improved SPF values ​​to avoid the undesirable consequences of sun exposure.

[0005] However, the high levels of UV filters in sunscreen products make them less appealing due to their oily feel, sticky texture, long drying time, and shiny residue on the skin after application. The filters also tend to whiten the skin after application and after being wetted by water or perspiration, which is an undesirable attribute.

[0006] Therefore, a stable sunscreen composition with a high SPF is desired, combined with easy application, good spreading ability, drying time, adhesion, less white film, less shine (oily texture), which does not melt at high temperature on the face, has an imperceptible touch, offers the ideal balance between hydration and sebum control and combines high protection with a smooth texture for the skin.

[0007] In order to increase the SPF value while preventing the use of a significant amount of UV filters in sunscreen compositions, sunscreen enhancers (also called "SPF enhancers" or "UV enhancers") are now used.

[0008] The present invention has overcome the drawbacks of the prior art and has obtained a cosmetic sunscreen composition with a high / increased SPF by the combination of organic UV filters and hydroxyapatite as an SPF enhancer without increasing the quantity of UV filters.

[0009] The inventors of the present invention have obtained, in a surprising and unexpected manner, cosmetic sunscreen compositions comprising (a) at least one organic UV filter; (b) at least one polymer; (c) at least one surfactant; and (d) hydroxyapatite, which offer higher SPF values ​​compared to prior art compositions.

[0010] The inventors of the present invention have obtained a new and inventive cosmetic sunscreen composition in which the addition of hydroxyapatite increased the SPF of the composition containing organic UV filters.

[0011] The present invention aims to provide cosmetic sunscreen compositions that have improved SPF values ​​due to the combination of ingredients that allows higher photoprotection of keratinous materials, in particular of the skin. Summary of the invention

[0012] The present invention relates to novel cosmetic sunscreen compositions comprising: (a) at least one organic UV filter; (b) at least one polymer; (c) at least one surfactant; and (d) hydroxyapatite, which surprisingly provides an increase in SPF properties in cosmetic sunscreen compositions containing only oil-phase organic filters. The present invention also relates to the use of hydroxyapatite to improve the SPF of cosmetic sunscreen compositions and the use of said cosmetic sunscreen composition.

[0013] Other features and advantages of the present invention will become apparent from the following more detailed description of desirable embodiments which illustrate, by way of example, the principles of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] The cosmetic sunscreen composition with an improved SPF of the present invention comprises: has. b. at least one organic UV filter; at least one polymer; c. at least one surfactant; and d. Hydroxyapatite.

[0015] In a preferred embodiment, at least one organic UV filter is selected from butyl methoxydibenzoylmethane, bisethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and mixtures thereof.

[0016] In a preferred embodiment, at least one organic UV filter is present in a concentration ranging from about 2.0% to about 30.0% by weight, preferably from about 2.0% to about 18% by weight, more preferably from about 2.0% to about 15.0% by weight, more preferably from about 2.0% to about 10.0% by weight, relative to the total weight of the composition.

[0017] In a preferred embodiment, at least one polymer is selected from C10-30 acrylate / alkyl acrylate crosslinked polymer, xanthan gum, and mixtures thereof.

[0018] In a preferred embodiment, at least one polymer is present in a concentration ranging from about 0.01% to about 5.0% by weight, preferably from about 0.01% to about 2.0% by weight, preferably from about 0.05% to about 1.0% by weight, more preferably from about 0.1% to about 0.5% by weight, relative to the total weight of the composition.

[0019] In a preferred embodiment, the polymer, C10-30 alkyl polymer / acrylate crosslinked polymer, is present in a range of about 0.01% by weight to about 2.5% by weight, relative to the total weight of the composition.

[0020] In another preferred embodiment, the xanthan gum polymer is present in a range of about 0.01% by weight to about 2.5% by weight, relative to the total weight of the composition.

[0021] In a preferred embodiment, at least one surfactant is selected from stearic acid, glyceryl stearate and PEG-100 stearate, potassium cetylphosphate, and mixtures thereof.

[0022] In a preferred embodiment, at least one surfactant is present in a concentration ranging from about 0.5% to about 12.0% by weight, preferably from about 0.5% to about 8.0% by weight, preferably from about 0.1% to about 7.5% by weight, more preferably from about 1.0% to about 5.0% by weight, relative to the total weight of the composition.

[0023] In a preferred embodiment, the surfactant stearic acid is present in a range of about 0.5% by weight to about 4.0% by weight, relative to the total weight of the composition.

[0024] In another preferred embodiment, the surfactant glyceryl stearate and PEG-100 stearate are present in a range of about 0.5% by weight to about 4.0% by weight, relative to the total weight of the composition.

[0025] In another preferred embodiment, the potassium cetylphosphate surfactant is present in a range of about 0.5% by weight to about 4.0% by weight, relative to the total weight of the composition.

[0026] In a preferred embodiment, hydroxyapatite is present in a concentration ranging from about 0.5% to about 15.0% by weight, preferably from about 1.0% to about 12.0% by weight, preferably from about 1.0% to about 6.0% by weight, more preferably from about 2.0% to about 5.0% by weight, relative to the total weight of the composition.

[0027] In a preferred embodiment, the cosmetic sunscreen composition is free of silicones or octocrylene, homosalate, ethylhexyl salicylate or aqueous phase UV filters.

[0028] The cosmetic sunscreen composition of the present invention may further include additional ingredients such as a solvent, a vitamin, a fatty compound, an active compound or a filler.

[0029] In a preferred embodiment, the cosmetic sunscreen composition of the present invention is an O / W emulsion.

[0030] In a preferred embodiment, the pH of the cosmetic sunscreen composition ranges from about 4.0 to about 8.0. In a more preferred embodiment, the pH of the composition is about 7.

[0031] The cosmetic sunscreen composition of the present invention exhibits improved SPF properties, offering several beneficial attributes to the product, including protection of the skin against damage caused by ultraviolet radiation, known as UVA and UVB rays, as well as visible and infrared light; easy application; good spreading ability; less white cast; less shine; does not melt at high temperatures on the face; has an imperceptible feel; and combines high protection with a smooth texture on the skin. Furthermore, the composition of the present invention is stable over time.

[0032] In another preferred embodiment, the present invention relates to the use of hydroxyapatite as a enhancer to improve the SPF on cosmetic sunscreen compositions.

[0033] In another preferred embodiment, the present invention relates to the use of the cosmetic sunscreen composition according to the present invention for the manufacture of a product to be used as a daily sunscreen product. Terms

[0034] As used herein, the expression "at least" means one or more and thus includes individual components as well as mixtures / combinations.

[0035] Except in the functional examples, or unless otherwise indicated, all numbers expressing quantities of ingredients and / or reaction conditions are understood as being modified in all cases by the term "approximately", meaning to within + / - 10% of the number indicated.

[0036] As used here, the term "including" should be interpreted as encompassing all the features specifically mentioned as well as optional, additional, unspecified features.

[0037] As used herein, the use of the term "comprising" also discloses the embodiment in which no features other than the features specifically mentioned are present (i.e., "consisting of").

[0038] The terms "a", "an", "the" and "the" are understood to encompass both the plural and the singular.

[0039] As used herein, the expressions "and their mixtures", "and one of their mixtures", "and their combinations", "and one of their combinations", "or their mixtures", "or one of their mixtures", "or their combinations", and "or one of their combinations" are used interchangeably to indicate that the list of components immediately preceding the expression, such as "A, B, C, D, or their mixtures", means that the component(s) may be chosen from A, from B, from C, from D, from A+B, from A+B+C, from A+D, from A+C+D, etc., without limitation on the variations thereof. Thus, the components may be used individually or any of their combinations.

[0040] The term "oil-in-water emulsion," also known as "oil-in-water emulsions," as used herein, refers to mixtures consisting of an oil phase dispersed in water or another aqueous liquid. Oil-in-water emulsions are known as direct emulsions.

[0041] The term "SPF," as used here, refers to the "Sun Protection Factor," which indicates the level of protection against UVB radiation provided by a product. The SPF indicates the amount of time a person can be exposed to sunlight while using sunscreen before getting sunburned, and the amount of time they can be exposed to sunlight without getting sunburned. ORGANIC UV FILTER

[0042] The cosmetic sunscreen composition according to the present invention comprises at least one organic UV filter.

[0043] Organic UV filters are compounds active in the UV-A and / or UV-B region. The organic UV filter can be hydrophilic and / or lipophilic.

[0044] Preferably, the organic UV filters according to the present invention are chosen from butyl methoxydibenzoylmethane, bisethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and mixtures thereof.

[0045] Organic UV filters can be selected from the group consisting of anthranilic compounds; dibenzoylmethane compounds; cinnamic compounds; salicylic compounds; camphor compounds; benzophenone compounds; [3,[3-diphenylacrylate] compounds; triazine compounds; benzotriazole compounds; benzalmalonate compounds; benzimidazole compounds; imidazoline compounds; bis-benzoazolyl compounds; p-aminobenzoic acid (PABA) compounds; methylenebis(hydroxyphenylbenzotriazole) compounds; benzoxazole compounds; α-alkylstyrene derivative dimers; 4,4-diarylbutadiene compounds; guaiazulene and its derivatives; rutin and its derivatives; flavonoids; bioflavonoids; oryzanol and its derivatives; quinic acid and its derivatives; phenols; retinol; cysteine; aromatic amino acids; peptides having an aromatic amino acid residue; and mixtures thereof.

[0046] Examples of organic UV filter(s) include those listed below under their INCI names and their mixtures. Anthranilic compounds: Menthyl anthranilate; Isopropyl dibenzoylmethane. Cinnamic compounds: Ethylhexyl methoxycinnamate; isopropyl methoxycinnamate; isopropoxy methoxycinnamate; isoamyl methoxycinnamate; cinoxate (2-ethoxyethyl-4-methoxy cinnamate); DEA methoxycinnamate; diisopropyl methylcinnamate; and glyceryl ethylhexanoate dimethoxycinnamate. Salicylic compounds: Homosalate (homomentyl salicylate); ethylhexyl salicylate; glycol salicylate; butyloctyl salicylate; phenyl salicylate; dipropylene glycol salicylate; and TEA salicylate. Camphor compounds, in particular benzylidenecamphor derivatives: 3-benzylidene camphor; 4-methylbenzylidene camphor; benzylidene camphor sulfonic acid; camphor benzalkonium methosulfate; terephthalylidene dicamphor sulfonic acid; and polyacrylamidomethyl benzylidene camphor.Composés benzophénone : Benzophenone-1 (2,4-dihydroxybenzophenone) ; benzophenone-2 (Tetrahydroxybenzophenone) ; Benzophenone-3 (2-hydroxy-4-methoxybenzophenone) ou oxybenzone ; benzophenone-4 (hydroxymethoxy benzophonene sulfonic acid) ; benzophenone-5 (Sodium hydroxymethoxy benzophenone Sulfonate) ; benzophenone-6 (dihydroxy dimethoxy benzophenone) ; benzophenone-8; benzophenone-9 (Disodium dihydroxy dimethoxy benzophenonedisulfonate) ; and benzophenone-12, and n-hexyl 2-(4-diethylamino-2-hydroxybenzoyl)benzoate. Composés [3,[3-Diphénylacrylate : Octocrylene ; et Etocrylene. Composés triazine : Diethylhexyl butamido triazone ; 2,4,6-tris(dineopentyl 4’-aminobenzahnalonate)-s-triazine. Composés benzotriazole, en particulier les dérivés de phénylbenzotriazole : 2-(2H-benzotriazole-2-yl)-6-dodzcyl-4-mzthylphzno, ramifiés et linéaires, et ceux décrits dans USP 5240975.Benzalmalonate compounds: Dineopentyl 4'-methoxybenzalmalonate, and polyorganosiloxane comprising functional groups. Benzalmalonate compounds, such as polysilicone-15. Benzimidazole compounds, particularly phenylbenzimidazole derivatives: phenylbenzimidazole sulfonic acid and disodium phenyl dibenzimidazole tetrasulfonate. Imidazoline compounds: ethylhexyl dimethoxybenzylidene dioxoimidazoline propionate. Bis-benzoazolyl compounds: derivatives as described in EP-669,323 and US Patent No. 2,463,264. Para-aminobenzoic acid compounds: PABA (p-aminobenzoic acid), ethyl PABA, ethyl dihydroxypropyl PABA, pentyl dimethyl PABA, ethylhexyl dimethyl PABA, glyceryl PABA, and PEG-25 PABA. Methylene bis-(hydroxyphenylbenzotriazole) compounds, such as 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-methyl-phenol], 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-(l,l,3,3-tetramethylbutyl)phenol], and derivatives as described in US Patent No. 5,237,071 and 5,166,355, GB-2,303,549, DE-197,261,844 and EP-893,119, and Drometrizole trisiloxane.Benzoxazole compounds: 2,4-bis[5-l(dimethylpropyl)benzoxazol-2-yl-(4-phenyl)imino]-6-(2-ethylhexyl)imino-1,3,5-triazine. .

[0047] In certain embodiments, it is desirable that the filter(s) UV organique(s) soi(en)t choisi(s) dans le groupe consistant en : ethylhexyl methoxycinnamate, homosalate, ethylhexyl salicylate, octocrylene, phenylbenzimidazole sulfonic acid, benzophenone-3, benzophenone-4, benzophenone-5, n-hexyl 2-(4-diethylamino-2-hydroxybenzoyl)benzoate, l,r-(l,4-piperazinediyl)bis [ 1 - [2- [4-(diethylamino)-2-hydroxybenzoyl]phenyl] -methanone, 4-methylbenzylidene camphor, terephthalylidene dicamphor sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate, diethylhexyl butamido triazone, 2,4,6-tris(dineopentyl 4’-aminobenzalmalonate)-s-triazine, 2,4,6-tris(diisobutyl 4’-aminobenzalmalonate)-s-triazine, 2,4-bis-(n-butyl 4’-aminobenzalmalonate)-6-[(3-{ 1,3,3,3 -tetramethyl-l-[(trimethylsilyloxy]-disiloxanyl}propyl)amino]-s-triazine, 2,4,6-tris-(di-phenyl)-triazine, 2,4,6-tris-(ter-phenyl)-triazine, methylene bis-benzotriazolyl tetramethylbutylphenol, drometrizole trisiloxane, polysilicone-15, dineopentyl 4’-methoxybenzalmalonate, l,l-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene, 2,4-bis[5-l(dimethylpropyl)benzoxazol-2-yl-(4-phenyl)imino]-6-(2-ethylhexyl)imino-l,3,5-triazine, camphor benzylkonium methosulfate, and mixtures thereof. , POLYMERS

[0048] The cosmetic sunscreen composition according to the present invention comprises at least one polymer.

[0049] Preferably, the polymers according to the present invention are selected from aluminum starch octenylsuccinate, C10-30 alkyl polyacrylate, the C10-30 acrylate / alkyl acrylate crosslinked polymer, xanthan gum, styrene / acrylates copolymer, and mixtures thereof. SURFACTANTS

[0050] The cosmetic sunscreen composition according to the present invention comprises at least one surfactant.

[0051] Preferably, the surfactants according to the present invention are chosen from stearic acid, glyceryl stearate and PEG-100 stearate, potassium cetylphosphate, and mixtures thereof. Additional surfactants

[0052] Non-limiting examples of additional anionic surfactants for the embodiment of the present invention may be chosen from the group comprising alkyl sulfates, alkyl phosphates, alkyl ether sulfates, alkyl ether phosphates, alkylamido ether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates, sulfonates, such as alkylsulfonates, alkylamide sulfonates, alkylarylsulfonates, alpha-olefin sulfonates, paraffin sulfonates, sulfosuccinates, alkylsulfosuccinates, alkyl ether sulfosuccinates, alkylamide sulfosuccinates, alkyl sulfoacetates, acylsarcosinates, acylglutamates, alkylsulfosuccinamates, taurates and N-acyl N-methyltaurates, isethionates, N-acylisethionates, N-acyltaurates, alkyl phosphates and phosphates, salts of alkyl monoesters and polyglycoside-polycarboxylic acids, acyl lactylates,D-galactoside uronic acid salts, alkyl ether carboxylic acid salts, alkyl aryl ether carboxylic acid salts, and alkylamido ether carboxylic acid salts, or the unsalted forms of all these compounds, the alkyl and acyl groups of all these compounds containing from 6 to 24 carbon atoms, and the aryl group designating a phenyl group. Some of these compounds may be oxyethylenated and then preferably comprise from 1 to 50 ethylene oxide motifs.

[0053] Non-limiting examples of non-ionic surfactants for the embodiment of the present invention are, for example, alkyl and polyalkyl esters of glycerol, such as polyglyceryl-3 dicitrate / stearate; mixtures of alkyl and polyalkyl esters of glycerol with polyglyceryl, such as polyglyceryl-3 methylglucose distearate; oxyalkylated (more particularly polyoxyethylated) fatty acid esters of glycerol; oxyalkylated fatty acid esters of sorbitan; oxyalkylated fatty acid esters (oxyethylenated and / or oxypropylenated); oxyalkylated fatty alcohol ethers (oxyethylenated and / or oxypropylenated); sugar esters, for example sucrose stearate; fatty alcohol ethers of sugars, particularly alkyl polyglucosides (APGs), such as decyl glucoside, the Lauryl glucoside, cetearyl glucoside, optionally mixed with cetostearyl alcohol, and also arachidyl glucoside, for example in the form of a mixture of arachidyl alcohol, behenyl alcohol, and arachidyl glucoside. According to a particular embodiment of the invention, the mixture of the alkylpolyglucoside as defined above with the corresponding fatty alcohol can be in the form of a self-emulsifying composition. Other examples include lecithins and their derivatives (e.g., biophilic), sugar esters, and sodium stearoyl lactylate. HYDROXYAPATITE

[0054] The cosmetic sunscreen composition according to the present invention comprises a hydroxyapatite.

[0055] According to the present invention, hydroxyapatite can be in the form of hydroxyapatite particles.

[0056] Hydroxyapatite is a natural mineral form of calcium apatite, defined by the chemical formula Ca5(PO4)3(OH), although it is often written Caio(PO4)6(OH)2 to indicate that the unit crystal cell comprises two molecules.

[0057] Hydroxyapatite according to the present invention is a filler and an FPS enhancer with a broad strengthening effect for organic UV filters in H / W emulsions.

[0058] Hydroxyapatite according to the present invention is used to improve the SPF in cosmetic sunscreen (SPF enhancer). ADDITIONAL INGREDIENTS

[0059] The cosmetic sunscreen composition according to the present invention may also include any other additional ingredient that is commonly used in the field of sunscreen products, in particular cosmetic sunscreen compositions.

[0060] The cosmetic sunscreen composition of the present invention may further include additional ingredients such as a solvent, a vitamin, a fatty compound, an active compound, SPF ingredients or a filler.

[0061] Non-limiting examples of solvents include alcohols, water, glycerin, caprylyl glycol, C1215 alkyl benzoate, among others, and mixtures thereof.

[0062] Non-limiting examples of vitamins include tocopherol, among others.

[0063] Non-limiting examples of fatty compounds include isopropyl palmitate and ethylhexyl palmitate, among others, and mixtures thereof.

[0064] Non-limiting examples of active compounds include triethanolamine, trisodium ethylenediamine disuccinate, hydroxyacetophenone, among others, and mixtures thereof.

[0065] Non-limiting examples of fillers include silica, among others.

[0066] A person skilled in the art can choose the quantity of additional ingredients so as not to have a negative impact on the final use of the composition according to the present invention.

[0067] The additional ingredients may represent from about 0.1% to about 85.0% by weight, relative to the total weight of the composition. METHOD OF IMPLEMENTING THE INVENTION

[0068] In one embodiment, the composition of cosmetic sunscreen with an improved SPF is as follows: a. of about 2.0% to about 30.0% by weight of at least one organic UV filter, selected from butyl methoxydibenzoylmethane, bisethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, or mixtures thereof; b. from about 0.01% to about 5.0% by weight of at least one polymer, selected from C10-30 acrylate / alkyl acrylate crosslinked polymer, xanthan gum, and mixtures thereof; c. 0.5% to 10.0% by weight of at least one surfactant, selected from stearic acid, glyceryl stearate and PEG-100 stearate, potassium cetyl phosphate, and mixtures thereof; and d. of about 0.5% to about 15.0% by weight of hydroxyapatite,

[0069] all weights being based on the total weight of the composition.

[0070] METHOD FOR MANUFACTURING A COSMETIC SUNSCREEN COMPOSITION

[0071] The present invention also relates to a method for manufacturing a cosmetic sunscreen composition that provides the consumer with the properties described above. The method according to the present invention comprises the steps of:

[0072] (a) mixture of the oil phase comprising solvents, organic UV filters and surfactants at a temperature ranging from 65°C to 80°C;

[0073] (b) addition of an aqueous phase heated to a temperature ranging from approximately 70 °C to approximately 80 °C at the mixing of step (a) at a temperature ranging from approximately 70 °C to approximately 80 °C;

[0074] (c) adding hydroxyapatite to the system once the emulsion is complete, or to the phase oily from step (a);

[0075] (d) optionally, incorporation of additional ingredients into the mixture of step (c) at a temperature ranging from about 20 °C to about 40 °C. EXAMPLES Examples 1 to 7

[0076] Non-limiting examples of cosmetic sunscreen compositions according to the present invention are Examples 2 to 7. A comparative composition is Example 1.

[0077] [Tables 1] FONCTION INCI EX •K %) EX.2 (%) EX.3 (%) EX.4 (%) EX.5 (%) EX.6 (%) EX.7 (%) TENSIOACT IF STEARIC ACID GLYCERYL STEA RATE (and) PEG-1 00 STEARATE POTASSIUM CET YL PHOSPHATE 3,0 4,1 4,8 5,0 5,6 6,3 7,0 SOLVANT ISOPROPYL PAL MITATE ALCOHOL DENA T. ETHYLHEXYL P ALMITATE GLYCERIN CAPRYLYL GLY COL C12-15 ALKYLB ENZOATE 20,0 24,5 26,5 27,7 28,0 29,0 30,0 AQUA Qs Qs Qs Qs Qs Qs Qs POLYMÈRE ACRYLATES / C10 30 ALKYL ACRYL ATE CROSSPOLY MER XANTHAN GUM 0,1 0,2 0,5 1,0 1,3 1,5 2,0 FILTRES UV BUTYL METHOX YDIBENZOYLME THANE 9,5 11,7 11,0 14,3 15,0 16,2 17,5 ETHYLHEXYL T RIAZONE BIS-ETHYLHEX YLO-XYPHENOL METHOXYPHEN YL TRIAZINE COMPOSÉ A CTIF TRIETHANOLAM INE TOCOPHEROL TRISODIUM ETH YLENEDIAMINE DISUCCINATE HYDROXYACET OPHENONE 1,3 1,6 1,9 2,0 2,1 2,2 2,3 CHARGE SILICA 0,2 0,4 0,6 0,8 1,0 1,2 1,5 CHARGE / RE NFORÇATEU R FPS HYDROXYAPAT ITE 0,0 1,0 2,5 3,6 4,5 7,5 12,0 Exemple 8

[0078] A comparative evaluation of the strengthening performance was carried out between the cosmetic sunscreen compositions of Examples 1 and 3. The methodology used was in accordance with the standard method IS024444:2019 / Amd1:2022 and AS / NZS 2604:2021 in a single-blind clinical study with a parallel control.

[0079] The average static FPS for Example 1 with five valid results was 25.6.

[0080] The average static FPS for Example 3 with five valid results was 29.6.

[0081] In conclusion, the cosmetic sunscreen composition according to the present invention of Example 3 comprising the SPF enhancer exhibits superior SPF performance compared to Example 1 which does not include such an ingredient.

Claims

Demands

1. Cosmetic sunscreen composition with enhanced SPF, comprising: (a) at least one organic UV filter, selected from butyl methoxydibenzoylmethane, bisethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and mixtures thereof; (b) at least one polymer; (c) at least one surfactant; and (d) hydroxyapatite.

2. Composition, according to claim 1, wherein at least one organic UV filter is present in a concentration from 2.0% to 30.0% by weight, relative to the total weight of the composition.

3. Composition according to claim 1, wherein at least one polymer is selected from C10-30 acrylate / alkyl acrylate crosslinked polymer, xanthan gum, and mixtures thereof.

4. Composition, according to claim 1, wherein at least one polymer is present in a concentration from 0.01% to 5.0% by weight, relative to the total weight of the composition.

5. Composition according to claim 1, wherein at least one surfactant is selected from stearic acid, glyceryl stearate and PEG-100 stearate, potassium cetylphosphate, and mixtures thereof.

6. Composition, according to claim 1, wherein at least one surfactant is present in a concentration from 0.5% to 12.0% by weight, relative to the total weight of the composition.

7. Composition, according to claim 1, wherein hydroxyapatite is present in a concentration from 0.5% to 15.0% by weight, relative to the total weight of the composition.

8. Composition according to claim 1, wherein the composition is free from silicones or octocrylene, homosalate, ethylhexyl salicylate or aqueous phase UV filters.

9. Composition, according to claim 1, wherein the composition is an O / W emulsion.

10. Cosmetic sunscreen composition with enhanced SPF, comprising: (a) 2.0% to 18.0% by weight of at least one organic UV filter, selected from butyl methoxydibenzoylmethane, the bisethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and mixtures thereof; (b) 0.01% to 2.0% by weight of at least one polymer, selected from C10-30 alkyl acrylate crosslinked polymer, xanthan gum, and mixtures thereof; (c) 1.0% to 7.5% by weight of at least one surfactant, selected from stearic acid, glyceryl stearate and PEG-100 stearate, potassium cetyl phosphate, and mixtures thereof; and (d) 1.0% to 12.0% by weight of hydroxyapatite; in which all weights are based on the total weight of the composition.