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 and resulting in a positive impact on costs and the environment, 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 specific fatty compound system of the present invention is an SPF enhancer for the organic UV filters of the composition.

[0011] The present invention aims to provide cosmetic sunscreen compositions that have improved SPF values, while allowing less UV filter material to be applied in cosmetic sunscreen compositions and allowing higher photoprotection of keratinous materials, in particular of the skin, increased film deposition and increased UV absorption. Summary of the invention

[0012] 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 oily compound system, which surprisingly provides enhanced SPF properties in cosmetic sunscreen compositions containing only oil-phase organic filters. The present invention also relates to the use of an oily compound system to improve the SPF of cosmetic sunscreen compositions and to the use of the 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: a. at least one organic UV filter; b. at least one polymer; c. at least one surfactant; and d. a fatty compound system.

[0015] In a preferred embodiment, at least one organic UV filter is selected from butyl methoxydibenzoylmethane, bis-ethylhexyloxyphenol 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 15.0% by weight, more preferably from about 3.0% to about 12.0% 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 0.05% to about 1.0% by weight, more preferably from about 0.1% to about 0.5% by weight, preferably from about 0.2% to about 0.5% by weight, relative to the total weight of the composition.

[0019] 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%.

[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, 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, 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, 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, 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.

[0026] In a preferred embodiment, the fatty compound system is selected from hydrogenated castor oil and Butyrospermum parkii (shea) butter.

[0027] 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.

[0028] In a preferred embodiment, hydrogenated castor oil is present in a range of about 0.25% by weight to about 5.0% by weight, preferably about 2% to about 4%, relative to the total weight of the composition.

[0029] In another preferred embodiment, Butyrospermum parkii (shea) butter is present in a range of about 0.25% by weight to about 5.0% by weight, preferably about 2% to about 4%, relative to the total weight of the composition.

[0030] In the fatty compound system, hydrogenated castor oil and Butyrospermum parkii (shea) butter are present in a ratio of 1:1.

[0031] In a preferred embodiment, the cosmetic sunscreen composition is free of silicones or octocrylene, homosalate, ethylhexyl salicylate, aqueous phase UV filters, and microplastics.

[0032] 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 fatty compound system of the present invention.

[0033] In a preferred embodiment, the cosmetic sunscreen composition of the present invention is an O / W emulsion.

[0034] 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.

[0035] The cosmetic sunscreen composition of the present invention has an improved SPF property, which offers 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, a Easy to apply, with good spreading ability, less white cast, less shine, and which does not melt at high temperatures on the face, it 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 and offers increased film deposition and enhanced UV absorption.

[0036] 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).

[0037] 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

[0038] As used herein, the expression "at least" means one or more and thus includes individual components as well as mixtures / combinations.

[0039] 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.

[0040] As used herein, the term "including" should be interpreted as encompassing all the features specifically mentioned as well as optional, additional, unspecified features.

[0041] 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").

[0042] The terms "a", "an", "the" and "the" are understood to encompass both the plural and the singular.

[0043] 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.

[0044] The term “emulsion (O / W)”, also known as “oil-in-water emulsions” as used herein refers to mixtures consisting of a phase Oil dispersed in water or another aqueous liquid. Emulsions (O / W) are known as direct emulsions.

[0045] 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 FILTERS

[0046] The cosmetic sunscreen composition according to the present invention comprises at least one organic UV filter.

[0047] 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

[0048] 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

[0049] 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.

[0050] 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 ; et glyceryl ethylhexanoate dimethoxycinnamate. Composés salicyliques : glycol salicylate ; butyloctyl salicylate ; phenyl salicylate ; dipropyleneglycol salicylate ; et TEA salicylate. Composés camphre, en particulier les dérivés de benzylidènecamphre : 3-benzylidene camphor ; 4-methylbenzylidene camphor ; benzylidene camphor sulfonic acid ; camphor benzalkonium methosulfate ; terephthalylidene dicamphor sulfonic acid ; et polyacrylamidomethyl benzylidene camphor.Benzophenone compounds: Benzophenone-1 (2,4-dihydroxybenzophenone); benzophenone-2 (Tetrahydroxybenzophenone); Benzophenone-3 (2-hydroxy-4-methoxybenzophenone) or 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. Compounds [3,[3-Diphenylacrylate: Etocrylene. Triazine compounds: Diethylhexyl butamido triazone; 2,4,6-tris(dineopentyl 4'-aminobenzalmalonate)-s-triazine. Benzotriazole compounds, in particular phenylbenzotriazole derivatives: 2-(2H-benzotriazole-2-yl)-6-doxybenzyl-4-methylbenzalmalonate, branched and linear, and those described in USP 5240975. Benzalmalonate compounds: dineopentyl 4'-methoxybenzalmalonate, and polyorganosiloxanes containing benzalmalonate functional groups.Benzimidazole compounds, in particular 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-(1,1,3,3-tetramethylbutyl)phenol], and derivatives as described in US patent Nos. 5,237,071 and 5,166,355, GB-2,303,549, DE-197,26184 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-l,3,5-triazine.

[0051] In certain embodiments, it is desirable that the filter(s) Organic UV(s) chosen from the group consisting of: ethylhexyl methoxycinnamate, phenylbenzimidazole sulfonic acid, benzophenone-3, benzophenone-4, benzophenone-5, n-hexyl 2-(4-diethylamino-2-hydroxybenzoyl)benzoate, 1,r-(1,4-piperazinediyl)bis[1-[2-[4-(diethylamino)-2-hydroxybenzoyl]ph enyl]-methanone, 4-methylbenzylidene camphor, terephthalylidene diamphr 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, 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

[0052] The cosmetic sunscreen composition according to the present invention comprises at least one polymer.

[0053] Preferably, the polymers according to the present invention are chosen from C10-30 acrylate / alkyl acrylate crosslinked polymer, xanthan gum and mixtures thereof. SURFACTANTS

[0054] The cosmetic sunscreen composition according to the present invention comprises at least one surfactant.

[0055] 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

[0056] 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,D-galactoside uronic acid salts, alkyl ether carboxylic acid salts, alkyl aryl ether carboxylic acid salts, and acid salts, alkylamido ether carboxylics; 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.

[0057] 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

[0058] The cosmetic sunscreen composition according to the present invention comprises a fatty compound system.

[0059] The fatty compound system according to the present invention provides an SPF enhancer to the cosmetic sunscreen composition. The fatty compound system also increases UV absorption.

[0060] The fatty compound system is selected from hydrogenated castor oil and Butyrospermum parkii (shea) butter.

[0061] In particular, hydrogenated castor oil is composed mainly of 12-hydroxystearic acid, a gelling molecule of oils which increases film deposition performance. ADDITIONAL INGREDIENTS

[0062] The cosmetic sunscreen composition according to the present invention may also include any other additional ingredient that is usually used in the field of sunscreen products, particularly sunscreen compositions.

[0063] 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.

[0064] Non-limiting examples of solvents according to the present invention include alcohols, water, glycerin, caprylyl glycol, C12-15 alkyl benzoate, among others, and mixtures thereof.

[0065] Non-limiting examples of vitamins include tocopherol, among others.

[0066] Non-limiting examples of active compounds according to the present invention include triethanolamine, trisodium ethylenediamine disuccinate, hydroxyacetophenone, among others, and mixtures thereof.

[0067] Non-limiting examples of fillers include silica, among others.

[0068] Non-limiting examples of fatty compounds other than the system of compounds Fats of the present invention include isopropyl palmitate, ethylhexyl palmitate, among others, and mixtures thereof.

[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;

[0073]

[0074]

[0075]

[0076]

[0077] c. from about 0.5% to about 12.0% 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 Butyrospermum parkii (shea) butter; all weights are based on the total weight of the composition. METHOD FOR MANUFACTURING A COSMETIC SUNSCREEN COMPOSITION 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: a. melting and mixing of the oil phase comprising solvents, organic UV filters, surfactants and the fatty compound system (hydrogenated castor oil and Butyrospermum parkii (shea) butter) at a temperature ranging from about 75 °C to about 90 °C, and addition of polymers after complete melting of the oil 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 and 2 A non-limiting example of cosmetic sunscreen compositions according to the present invention is Example 2 and the cosmetic sunscreen composition of the prior art is Example 1 as shown in Table 1 below. [Tables 1] INCI FUNCTION Ex. 1 Ex. 2 UV FILTERS BUTYL METHOXYDIBENZOYLMETHANE (BUTYL METHOXYDIBENZOYLMETHAN E) 9.50 12.00 ETHYLHEXYL TRIAZONE (ETHYLHEXYL TRIAZONE) BIS-ETHYLHEXYLOXYPHENOL METHOXYPHENOL (BIS-ETHYLHEXYLO XYPHENOL METHOXYPHENYL TRIAZINE) POLYMERS CROSSCROSSED ACRYLATES / C10 ALKYL ACRYLATE 30) (ACRYLATE S / C10 ALKYL ACRYLATE CROSSPOLYMER) 0.15 0.50 XANTHAN GUM (XANTHAN GUM) SURFACTANT STEARIC ACID (STEARIC ACID) 3.40 4.00 GLYCERYL STEARATE (and) PEG-100 STEARATE (GLYCERYL STEARATE (and) PEG-100 STEARATE) POTASSIUM CETYL PHOSPHATE (POTASSIUM CETYL PHOSPHATE) FAT COMPOUND SYSTEM HYDROGENATED CASTOR OIL (HYDROGENATED CASTOR OIL) 0.00 5.00 BUTYROSPERMUM PARKIRKA RITE) (BUTYROSPERMUM PARKII (SHEA) BUTTER) SOLVENT ALCOHOL DENAT. (ALCOHOL DENAT.) 15.00 16.00 C1215 ALKYL BENZOATE (C1215 ALKYL BENZOATE) GLYCERIN (GLYCERIN) CAPRYLYL GLYCOL WATER (WATER) QS QS VITAMIN TOCOPHEROL (TOCOPHEROL) 0.80 0.15 ACTIVE COMPOUND TRIETHANOLAMINE (TRIETHANOLAMINE) 1.30 1.60 TRISODIUM ETHYLENEDIAMINE DISUCCINATE (TRISODIUM ETHYLENEDIAMINE DISUCCINATE) HYDROXYA CETOPHENONE (HYDROXYA CETOPHENONE) SILICA CHARGE 0.65 0.50 GRAS COMPOUNDS ISOPROPYL PALMITATE 11.50 13.00 ETHYLHEXYL PALMITATE

[0078] Example 2 - Comparative evaluation of FPS reinforcement performance

[0079] A comparative evaluation of the reinforcement performance was carried out between the cosmetic sunscreen compositions of Examples 1 and 2. The methodology used was in accordance with the standard procedure ISO / EN24444:2019 “Cosmetics — Sun protection test methods — In vivo determination of sun protection factor (SPF)” and the Australian / New Zealand standard procedure AS / NZS 2604:2021 “Sunscreen products — Evaluation and classification”.

[0080] The comparative evaluation was conducted with 10 healthy male and female subjects, aged 18 to 65 years. The application of the cosmetic sunscreen compositions of Examples 1 and 2 was carried out on defined areas (8 * 5 cm) of the back in standard quantities, and the SPF results were calculated as an arithmetic mean, with a 95% confidence interval (CI), of all individual SPF values.

[0081] In particular, the minimum erythematous dose in human skin is defined as the lowest effective erythematous energy (Her) exposure that produces the first unambiguous perceptible erythema with defined borders appearing over more than 50% of the UV exposure subsite, 16 h to 24 h after UV exposure to a solar simulator, with 6 increasing doses of UV (15% progression).

[0082] The average FPS for Example 1 was 29.3.

[0083] The average FPS for Example 2 was 33.8.

[0084] In conclusion, the cosmetic sunscreen composition of Example 2 comprising the fatty compound system according to the present invention, surprisingly 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 crosslinked acrylates / alkyl acrylate C10-30 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 Butyrospermum parkii (shea) butter.

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 Butyrospermum parkii (shea) butter are present in a ratio of 1:

1.

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

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) 2.0% 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 C10-3-o polymer, 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 Butyrospermum parkii (shea) butter; wherein all weights are based on the total weight of the composition.