COSMETIC SUNSCREEN COMPOSITIONS, USE OF A FAT COMPOUND SYSTEM AND USE OF A COSMETIC SUNSCREEN COMPOSITION

Abstract

COSMETIC SUNSCREEN COMPOSITIONS, USE OF A FAT COMPOUND SYSTEM, AND USE OF A COSMETIC SUNSCREEN COMPOSITION. 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) a fat compound system. The invention also relates to the use of a fat compound system to improve the SPF of cosmetic sunscreen compositions and the use of the cosmetic sunscreen composition. Figure for abstract: none

Description

Title of the invention: COSMETIC SUNSCREEN COMPOSITIONS, USE OF A FAT COMPOUND SYSTEM AND USE OF A COSMETIC SUNSCREEN COMPOSITION. FIELD OF THE 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) a fatty compound system. The invention also relates to the use of a fatty compound system to improve the SPF of cosmetic sunscreen compositions and to the use of the 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 temperatures on the face, has an imperceptible feel, and offers the ideal balance between hydration and sebum control and combines high protection with a skin-smooth texture.

[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 UV filters and fatty compounds as SPF enhancers without increasing the quantity of UV filters.

[0009] The inventors of the present invention have, surprisingly and unexpectedly, obtained cosmetic sunscreen compositions with an improved SPF, comprising (a) at least one organic UV filter; (b) at least one polymer; (c) at least one surfactant; and (d) a fatty compound system, which are capable of offering higher SPF values ​​compared to compositions of the prior art.

[0010] The present invention aims to provide cosmetic sunscreen compositions that have improved SPF values ​​and allow higher photoprotection of keratinous materials, in particular of the skin, increased film deposition and increased UV absorption. Summary of the invention

[0011] The present invention relates to novel cosmetic sunscreen compositions with an improved SPF, comprising (a) at least one organic UV filter; (b) at least one polymer; (c) at least one surfactant; and (d) an oil-based compound system, 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 an oil-based compound system to improve the SPF of cosmetic sunscreen compositions and to the use of the cosmetic sunscreen composition.

[0012] Other features and advantages of the present invention will become apparent from the following more detailed description of desirable embodiments which illustrates, by way of example, the principles of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] The cosmetic sunscreen composition with an improved SPF of the present invention comprises: a. at least one organic UV filter; b. at least one polymer; c. at least one surfactant; and d. a fatty compound system.

[0014] In a preferred embodiment, at least one organic UV filter is selected from butyl methoxydibenzoylmethane, bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and mixtures thereof.

[0015] 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 5.0% to about 15.0% by weight, more preferably from about 5.0% to about 10.0% by weight, relative to the total weight of the composition.

[0016] In a preferred embodiment, at least one polymer is selected from C10-30 acrylate / alkyl acrylate crosslinked polymer, xanthan gum, and mixtures thereof.

[0017] 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 0.05% 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.

[0018] In a preferred embodiment, the C10-30 acrylate / alkyl acrylate crosslinked polymer is present in a range of about 0.01 wt% to about 2.5 wt%.

[0019] 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.

[0020] In a preferred embodiment, at least one surfactant is selected from stearic acid, glyceryl stearate and PEG-100 stearate, potassium cetylphosphate, and mixtures thereof.

[0021] 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, more preferably from about 1.0% to about 5.0% by weight, relative to the total weight of the composition.

[0022] In a preferred embodiment, 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.

[0023] In another preferred embodiment, 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.

[0024] In another preferred embodiment, potassium cetylphosphate 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.

[0025] In a preferred embodiment, the fatty compound system is selected from hydrogenated castor oil and Copemicia cerifera (carnauba) wax.

[0026] In a preferred embodiment, the fatty compound system is present in a concentration ranging from about 0.5% to about 10.0% by weight, preferably from about 2.0% to about 8.0% by weight, more preferably from about 4.0% to about 6.0% by weight, and even 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, hydrogenated castor oil is present in a range of about 0.25% by weight to about 5.0% by weight, relative to the total weight of the composition.

[0028] In another preferred embodiment, Copernicia cerifera (carnauba) wax is present in a range of about 0.25% by weight to about 5.0% by weight, relative to the total weight of the composition.

[0029] In the fatty compound system, hydrogenated castor oil and Copemicia cerifera (carnauba) wax are present in a ratio of 1:1.

[0030] In a preferred embodiment, the cosmetic sunscreen composition is free of silicones or octocrylene, homosalate, ethylhexyl salicylate or aqueous phase UV filters.

[0031] The cosmetic sunscreen composition of the present invention may further comprise additional ingredients such as solvents, vitamins, active compounds, fillers or fatty compounds other than the SPF-enhancing fatty compound system of the present invention.

[0032] In a preferred embodiment, the cosmetic sunscreen composition of the present invention is an O / W emulsion.

[0033] 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 7.0.

[0034] 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 rays, known as UVA and UVB rays, as well as visible and infrared light; easy application; good spreading ability; less white cast; less shine; non-melting at high temperatures on the face; an imperceptible feel; and a combination of high protection with a smooth texture on the skin. Furthermore, the composition of the present invention is stable over time and provides increased film deposition and enhanced UV absorption.

[0035] In another preferred embodiment, the present invention relates to the use of a fatty compound system to improve the SPF of cosmetic sunscreen compositions (SPF enhancer).

[0036] 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 for use as a daily sunscreen product. Terms

[0037] As used herein, the expression "at least" means one or more and thus includes individual components as well as mixtures / combinations.

[0038] Except in the functional examples, or unless otherwise indicated, all numbers expressing quantities of ingredients and / or reaction conditions are understood to be modified in all cases by the term "approximately", meaning to within + / - 10% of the number indicated.

[0039] As used herein, the term "including" should be interpreted as encompassing all the features specifically mentioned as well as optional, additional, unspecified features.

[0040] 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").

[0041] The terms "a", "an", "the" and "the" are understood to encompass both the plural and the singular.

[0042] 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 in any of their combinations.

[0043] 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.

[0044] The term "SPF," as used here, refers to the "Sun Protection Factor," which indicates the level of protection against UVB radiation of a product. The SPF indicates the time a person can be exposed to sunlight while using sunscreen before getting sunburned and the time during which it can be exposed to sunlight without getting sunburned. ORGANIC UV FILTERS

[0045] The cosmetic sunscreen composition according to the present invention comprises at least one organic UV filter.

[0046] According to the present invention, UV filters are compounds active in the UV-A and / or UV-B region. The organic UV filter can be hydrophilic and / or lipophilic. Organic UV filters

[0047] In a preferred embodiment, the organic UV filters according to the present invention are selected from butyl methoxydibenzoylmethane, bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and mixtures thereof. Additional organic UV filters

[0048] Additional organic UV filters may 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.

[0049] Examples of organic UV filter(s) include those listed below under their INCI names and their mixtures. Anthranilic compounds: Menthyl anthranilate. Dibenzoylmethane compounds: 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 ; et 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) ; et benzophenone-12, et 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-dodecyl-4-methylpheno, ramifiés et linéaires, et ceux décrits dans USP 5240975.Benzalmalonate compounds: Dineopentyl 4'-methoxybenzalmalonate, and polyorganosiloxanes containing benzalmalonate functional groups, 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-197,26,184 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.

[0050] 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- {l,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

[0051] The cosmetic sunscreen composition according to the present invention comprises at least one polymer.

[0052] Preferably, the polymers according to the present invention are selected from aluminum starch octenylsuccinate, C10-30 alkyl polyacrylate, C10-30 alkyl acrylate / crosslinked polymer, xanthan gum, styrene / acrylates copolymer, and mixtures thereof. SURFACTANTS

[0053] The cosmetic sunscreen composition according to the present invention comprises at least one surfactant.

[0054] 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

[0055] Non-limiting examples of additional anionic surfactants for the embodiment of the present invention are 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,uronic acid D-galactoside 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 can be oxyethylated and then preferably comprise from 1 to 50 ethylene oxide motifs.

[0056] 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, in particular alkyl polyglucosides (APGs), such as decyl glucoside, lauryl glucoside, cetearyl glucoside, optionally in mixture 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 alkyl polyglucoside as defined above with the corresponding fatty alcohol can be in the form of a self-emulsifying composition. Other examples include lecithins and derivatives (for example, biophilic), sugar esters and sodium stearoyl lactylate. FAT COMPOUND SYSTEM

[0057] The cosmetic sunscreen composition according to the present invention comprises a fatty compound system.

[0058] The fatty compound system according to the present invention provides an SPF enhancer to the cosmetic sunscreen composition. The fatty compound system also increases film deposition and UV absorption.

[0059] The fatty compound system is selected from hydrogenated castor oil and Copemicia cerifera (camauba) wax.

[0060] In particular, hydrogenated castor oil is composed mainly of 12-hydroxystearic acid, a gelling molecule in oils that increases film deposition performance.

[0061] Carnauba wax (Copemicia cerifera wax) is a hard wax scraped from the leaves and leaf stalks of carnauba palms, Copemicia cerifera. Copemicia cerifera (carnauba) wax comprises C18-C32 fatty acid esters and C28-C34 alcohols, also containing large amounts of hydroxy acid esters and having melting points around 80 °C and 86 °C.

[0062] Furthermore, the wax of Copemicia cerifera (carnauba) usually comprises from about 80% by weight to about 85% by weight of fatty esters, from about 1% by weight to about 5% by weight of alcohols, about 1% by weight to about 5% by weight of hydrocarbons, about 1% by weight to about 5% by weight of free acids, about 1% by weight to about 6% by weight of resins, about 1% by weight to about 5% by weight of lactic components and about 0.1% by weight to about 2% by weight of moisture.

[0063] In particular, Copemicia cerifera (carnauba) wax is a complex composition with up to 10% cinnamic acid, responsible for its UV absorption profile. ADDITIONAL INGREDIENTS

[0064] 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 sunscreen compositions.

[0065] The cosmetic sunscreen composition of the present invention may further comprise additional ingredients such as solvents, vitamins, active compounds, fillers, SPF ingredients or fatty compounds other than the fatty compound system of the present invention.

[0066] Non-limiting examples of solvents according to the present invention include alcohols, water, glycerin, caprylyl glycol, C12-15 alkyl benzoate, isopropyl palmitate and ethylhexyl palmitate, among others, and mixtures thereof.

[0067] Non-limiting examples of active compounds according to the present invention include triethanolamine, trisodium ethylenediamine disuccinate, hydroxyacetophenone, tocopherol, among others, and mixtures thereof.

[0068] Non-limiting examples of fillers include silica, among others.

[0069] 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 sunscreen composition according to the present invention.

[0070] A person skilled in the art shall ensure that the optional additional ingredients and / or their quantity are selected so that the advantageous properties of the composition according to the invention are not, or substantially not, compromised by the envisaged addition.

[0071] The additional ingredients may represent from about 0.1% to about 70.0% by weight, relative to the total weight of the composition. METHOD OF IMPLEMENTING THE INVENTION

[0072] 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, bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone and 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. of approximately 0.5% to approximately 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 10.0% by weight of a fatty compound system, selected from hydrogenated castor oil and Copemicia cerifera (carnauba) wax; a. all weights being based on the total weight of the composition.

[0073] METHOD FOR MANUFACTURING A COSMETIC SUNSCREEN COMPOSITION

[0074] The present invention also relates to a method for manufacturing a cosmetic sunscreen composition that offers the consumer the properties described above. The method according to the present invention comprises the steps of: a. melting and mixing the oily phase comprising solvents, organic UV filters, surfactants and the oil compound system (Copernicia cerifera (carnauba) wax and hydrogenated castor oil) at a temperature ranging from about 75 °C to about 90 °C, and adding polymers after complete melting of the oily phase; b. adding an aqueous phase heated to a temperature of approximately 70 °C to approximately 85 °C to the oil phase mixture of step (a) at a temperature of approximately 70 °C to approximately 85 °C; c. Optionally, incorporation of additional ingredients into the mixture in step (b) at a temperature ranging from 20°C to 40°C. EXAMPLES Examples 1 to 3

[0075] Non-limiting examples of cosmetic sunscreen compositions according to the present invention are Examples 2 and 3 below. The comparative composition of the prior art is Example 1.

[0076] [Tables 1] FUNCTION INCI EX. 1 (%) EX. 2 (%) EX. 3 (%) COMPOSÉ A CTIF TRIETHANOL AMINE 1,3 1,6 1,9 TRISODIUM ETHYLENEDIA MINE DISUCCINATE HYDROXYACETOPHENONE TOCOPHEROL SOLVANT Ci215 ALKYL BENZOATE 25,0 30,0 33,0 ISOPROPYL PALMITATE ETHYLHEXYL PALMITATE ALCOHOL DENAT. GLYCERIN CAPRYLYL GLYCOL WATER QS QS QS FILTRES UV BUTYL METHOXYDIBENZO YL-METHANE 9,5 11,5 14,0 ETHYLHEXYL TRIAZONE BIS-ETHYLHEXYLOXYPHEN OL METHOXYPHENYL TRIA ZINE TENSIOACT IF STEARIC ACID 3,4 4,2 4,0 GLYCERYL STEARATE (and) PEG-100 STEARATE POTASSIUM CETYL PHOSPH ATE POLYMÈRE ACRYLATES / C10 30 ALKYL A CRYLATE CROSSPOLYMER 0,15 0,4 0,5 XANTHAN GUM CHARGE SILICA 1,0 1,5 0,8 SYSTÈME D E COMPOSÉ GRAS COPERNICIA CERIFERA (CA RNAUBA) WAX 0,0 2,5 5,0 HYDROGENATED CASTOR OIL

[0077] Exemple 4 - Évaluation comparative de la performance de renforcement de FPS

[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 FPS for Example 1 was 29.3.

[0080] The average FPS for Example 3 was 35.3.

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

Claims

Demands

1. Cosmetic sunscreen composition with enhanced SPF, comprising: (a) at least one organic UV filter selected from butyl methoxydibenzoylmethane, bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and mixtures thereof; (b) at least one polymer selected from C10-30 acrylate / alkyl acrylate crosslinked polymer, xanthan gum, and mixtures thereof; (c) at least one surfactant selected from stearic acid, glyceryl stearate and PEG-100 stearate, potassium cetyl phosphate, and mixtures thereof; and (d) a fatty compound system selected from hydrogenated castor oil and Copemicia cerifera (carnauba) wax.

2. Cosmetic sunscreen 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. Cosmetic sunscreen 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.

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

5. Cosmetic sunscreen composition, according to claim 1, wherein the fatty compound system is present in a concentration from 0.5% to 10.0% by weight, relative to the total weight of the composition.

6. Cosmetic sunscreen composition according to claim 1, wherein in the fatty compound system, hydrogenated castor oil and Copemicia cerifera (carnauba) wax are present in a ratio of 1:

1.

7. Cosmetic sunscreen composition, according to claim 1, wherein the composition is free from silicones or of octocrylene, homosalate, ethylhexyl salicylate or aqueous phase UV filters.

8. Cosmetic sunscreen composition, according to claim 1, wherein it further comprises at least one additional ingredient selected from solvents, vitamins, active compounds, fillers or fatty compounds other than the fatty compound system of point (d).

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

10. Cosmetic sunscreen composition with enhanced SPF, comprising: (a) 5.0% to 15.0% by weight of at least one organic UV filter selected from butyl methoxydibenzoylmethane, bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and mixtures thereof; (b) 0.1% to 0.5% by weight of at least one polymer selected from crosslinked acrylates / alkyl acrylate in CiO₃O, xanthan gum, and mixtures thereof; (c) 1.0% to 5.0% 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) 2.0% to 5.0% by weight of a fatty compound system selected from hydrogenated castor oil and Copernicia cerifera (camauba) wax; wherein all weights are based on the total weight of the composition.