COSMETIC SUNSCREEN COMPOSITION AND USE OF A COSMETIC SUNSCREEN COMPOSITION

Abstract

COSMETIC SUNSCREEN COMPOSITION AND USE OF A COSMETIC SUNSCREEN COMPOSITION The present invention relates to a cosmetic sunscreen composition with a lightweight feel and improved SPF, comprising (a) at least one polymer; (b) at least one filler; (c) at least one surfactant; (d) at least one fatty compound; and (e) at least one organic UV filter. The present invention also relates to the use of the cosmetic sunscreen composition. Figure for abstract: none

Description

Title of the invention: COSMETIC SUNSCREEN COMPOSITION AND USE OF A COSMETIC SUNSCREEN COMPOSITION. FIELD OF THE INVENTION

[0001] The present invention relates to a cosmetic sunscreen composition with a lightweight feel and improved SPF, comprising (a) at least one polymer; (b) at least one filler; (c) at least one surfactant; (d) at least one fatty compound; and (e) at least one organic UV filter. The present invention also relates to the use of the cosmetic sunscreen composition. CONTEXT OF THE INVENTION

[0002] Photoprotection of keratinous materials is considered of great importance to ensure protection against sun damage, sunburn, photoaging, and to reduce the risk of developing skin cancer caused by exposure to ultraviolet (“UV”) radiation. There are typically two types of UVA / UVB sunscreen compositions used to achieve photoprotection, namely inorganic UV filters and organic UV filters.

[0003] Consumers are concerned about the negative effects of sun exposure, particularly the harmful effects of ultraviolet (“UV”) radiation. Prolonged exposure to sunlight causes skin damage, such as sunburn. When skin is exposed to UV light with a wavelength of approximately 290 nm to approximately 400 nm, long-term damage can lead to serious conditions such as skin cancer. UV light also contributes to aging by causing the formation of free radicals in the skin. Free radicals include, for example, singlet oxygen, hydroxyl radicals, superoxide anions, nitric oxide, and hydrogen radicals. Free radicals attack DNA, membrane lipids, and proteins, generating carbon radicals.These, in turn, react with oxygen to produce a peroxyl radical, which can attack adjacent fatty acids to generate new carbon radicals. This cascade leads to a chain reaction producing lipid peroxidation products. Damage to the cell membrane results in a loss of cell permeability, an increase in intercellular ion concentration, and a decreased ability to excrete or detoxify waste. The end result is a loss of skin elasticity and the appearance of wrinkles. This process is commonly referred to as photoaging.

[0004] In this sense, in a skin care ritual, consumers apply cosmetic sunscreen compositions to protect the skin and the perception of the product on the skin is very important.

[0005] Consumers are increasingly seeking cosmetic sunscreen products that are easy to apply, preferably with fluid / light properties that fit into their photoprotection routine while protecting the skin with a high degree of UV protection (UVA / UVB).

[0006] The degree of UV protection of a cosmetic sunscreen composition is directly related to the quantity and type of UV filters it contains. The higher the quantity of UV filters, the higher the degree of UV protection (UVA / UVB).

[0007] In particular, sunscreen compositions must offer good protection against the sun, one measure of which is the Sun Protection Factor (SPF) value, while presenting a satisfactory, but non-greasy, sensory perception upon application.

[0008] For the aforementioned reasons, there is a need to develop new compositions of fluid / light cosmetic sunscreens having the following properties: high stability, more environmentally friendly ingredients, good sensory properties, a dry effect, good absorption and spreading ability, and delivering a high SPF.

[0009] The inventors of the present invention have overcome the drawbacks of the prior art and have obtained, in an astonishing way, a fluid / light cosmetic sunscreen composition comprising the properties mentioned above, with a high SPF, good sensory attributes, easy spreading, a light film, a good level of radiance and sensation for the skin, more durable ingredients and stability, comprising: (a) at least one polymer, (b) at least one filler, (c) at least one surfactant; (d) at least one fatty compound and (e) at least one organic UV filter. Summary of the invention

[0010] The present invention relates to novel cosmetic sunscreen compositions with a lightweight feel and improved SPF, comprising (a) at least one polymer; (b) at least one filler; (c) at least one surfactant; (d) at least one fatty compound; and (e) at least one organic UV filter, which remarkably provides a uniquely lighter feel, faster absorption, and a good level of radiance and feel for the skin, as well as increased SPF properties in cosmetic sunscreen compositions. The present invention also relates to the use of the cosmetic sunscreen composition as a daily sunscreen product.

[0011] 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. Brief description of the drawings

[0012] [Fig.1A] Fig.1A shows the microscopic analysis of the comparative cosmetic sunscreen composition Cl.

[0013] [Fig.IB] Fig.IB shows the microscopy analysis of the screen composition cosmetic sunscreen according to Ex. 1.

[0014] [Fig. 2A] [Fig. 2A] shows the results of the UV light analysis of the comparative cosmetic sunscreen composition CL

[0015] [Fig.2B] Fig.2B shows the results of the UV light analysis of the composition of cosmetic sunscreen according to Ex. 1. DETAILED DESCRIPTION OF THE INVENTION

[0016] The cosmetic sunscreen composition with a light feel and enhanced SPF comprises: a. at least one polymer; b. at least one charge; c. at least one surfactant; d. at least one fatty compound; and e. at least one organic UV filter.

[0017] In a preferred embodiment, at least one polymer is selected from cetyl hydroxyethylcellulose, dehydroxanthan gum, hydroxyethylcellulose, xanthan gum, modified potato starch, hydroxypropyl starch phosphate, and mixtures thereof.

[0018] In a preferred embodiment, at least one polymer is present in a concentration ranging from about 0.01% to about 6.0% by weight, preferably from about 0.05% to about 5.0% by weight, more preferably from about 0.075% to about 2.5% by weight, relative to the total weight of the composition.

[0019] In a preferred embodiment, cetyl hydroxyethylcellulose is present in a range of about 0.005% by weight to about 1.0% by weight, relative to the total weight of the composition.

[0020] In another preferred embodiment, dehydroxanthan gum is present in a range of about 0.005% by weight to about 1.0% by weight, relative to the total weight of the composition.

[0021] In another preferred embodiment, hydroxyethylcellulose is present in a range of about 0.005% by weight to about 1.0% by weight, relative to the total weight of the composition.

[0022] In another preferred embodiment, xanthan gum is present in a range of about 0.005% by weight to about 1.0% by weight, relative to the total weight of the composition.

[0023] In another preferred embodiment, the modified potato starch is present in a range of about 0.005% by weight to about 1.0% by weight, relative to the total weight of the composition.

[0024] In another preferred embodiment, hydroxypropyl starch phosphate is present in a range of about 0.005% by weight to about 1.0% by weight, relative to the total weight of the composition.

[0025] In a preferred embodiment, at least one filler is selected from cellulose, silica, perlite, silica silylate, aluminum octenylsuccinate starch, and mixtures thereof.

[0026] In a preferred embodiment, at least one filler is present in a concentration ranging from about 0.01 to about 10.0% by weight, preferably from about 0.05% to about 8.0% by weight, more preferably from about 0.1% to about 6.0% by weight, relative to the total weight of the composition.

[0027] In a preferred embodiment, at least one surfactant is selected from sodium stearoyl glutamate, cetearyl alcohol and cetearyl glucoside, behenyl alcohol, polyglyceryl-10 laurate, inulin lauryl carbamate, glyceryl stearate and PEG-100 stearate, and mixtures thereof.

[0028] In a preferred embodiment, at least one surfactant is present in a concentration ranging from about 0.01% to about 10.0% by weight, preferably from about 0.05% to about 8.0% by weight, more preferably from about 0.075% to about 5.0% by weight, relative to the total weight of the composition.

[0029] In a preferred embodiment, at least one fatty compound is selected from isopropyl myristate, diisopropyl sebacate, dicaprylyl carbonate, dicaprylyl ether, C15-19 alkane, Copemicia cerifera (Camauba) wax, and mixtures thereof.

[0030] In a preferred embodiment, at least one fatty compound is present in a concentration ranging from about 0.05% to about 55.0% by weight, preferably from about 0.1% to about 25.0% by weight, more preferably from about 0.5% to about 20.0% by weight, relative to the total weight of the composition.

[0031] In another preferred embodiment, isopropyl myristate is present in a range of about 0.005% by weight to about 10.0% by weight, relative to the total weight of the composition.

[0032] In another preferred embodiment, diisopropyl sebacate is present in a range of about 0.005% by weight to about 10.0% by weight, relative to the total weight of the composition.

[0033] In another preferred embodiment, dicaprylyl carbonate is present in a range of about 0.005% by weight to about 10.0% by weight, relative to the total weight of the composition.

[0034] In another preferred embodiment, dicaprylyl ether is present in a range of about 0.005% by weight to about 10.0% by weight, relative to the total weight of the composition.

[0035] In another preferred embodiment, the Cr alkane is present in a range of about 0.005% by weight to about 10.0% by weight, relative to the total weight of the composition.

[0036] In another preferred embodiment, Copernicia cerifera (Camauba) wax is present in a range of about 0.005% by weight to about 5.0% by weight, relative to the total weight of the composition.

[0037] In a preferred embodiment, at least one organic UV filter is selected from butyl methoxydibenzoylmethane, ethylhexyl triazone, bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylamino hydroxybenzoyl hexyl benzoate, and mixtures thereof.

[0038] In a preferred embodiment, at least one organic UV filter is present in a concentration ranging from about 0.2% to about 30.0% by weight, preferably from about 0.5% to about 25.0% by weight, more preferably from about 0.75% to about 20.0% by weight, relative to the total weight of the composition.

[0039] In a preferred embodiment, the cosmetic sunscreen composition is free of silicones.

[0040] In a preferred embodiment, the cosmetic sunscreen composition has an SPF ranging from about 30 to about 80.

[0041] The cosmetic sunscreen composition of the present invention may further include additional ingredients such as solvents, preservatives, perfumes, active compounds or vitamins.

[0042] 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; 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.

[0043] 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

[0044] As used herein, the expression "at least" means one or more and thus includes individual components as well as mixtures / combinations.

[0045] 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.

[0046] As used here, the term "including" should be interpreted as encompassing all the features specifically mentioned as well as optional, additional, unspecified features.

[0047] 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").

[0048] The terms "a", "an", "the" and "the" are understood to encompass both the plural and the singular.

[0049] 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.

[0050] 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. POLYMERS

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

[0052] At least one polymer according to the present invention improves the film formed, providing good sensoriality to the cosmetic sunscreen composition.

[0053] Preferably, at least one polymer according to the present invention is chosen from cetyl hydroxyethylcellulose, dehydroxanthan gum, hydroxyethylcellulose, xanthan gum, modified potato starch, hydroxypropyl starch phosphate, and mixtures thereof. CHARGES

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

[0055] The term "charge" refers to colorless or white solid particles of any shape that are insoluble and dispersed in the medium of the composition.

[0056] The fillers according to the present invention provide good sensory appeal to the cosmetic sunscreen composition.

[0057] The cosmetic sunscreen compositions according to the invention include spherical amorphous silica. In some embodiments, the average size of these spherical amorphous silica particles is less than 15.0 µm and more particularly ranges from 3 to 10 µm. The useful spherical amorphous silica particles according to the invention are colorless or white solid particles of any shape, which are insoluble and dispersed in the medium of the composition. The spherical amorphous silica may be coated with a hydrophobic treatment agent, although it is free of such coatings in some embodiments.

[0058] The "silica silylate" according to the present invention is a hydrophobic silica aerogel, as described in WO 2021 / 016680. The term "hydrophobic silica" refers to any silica whose surface is treated with silylation agents, for example, halogenated silanes, such as alkylchlorosilanes, siloxanes, in particular dimethylsiloxanes, such as hexamethyldisiloxane, or silazanes, so as to functionalize the OH groups with Si-Rn silyl groups, for example, trimethylsilyl groups. The preparation of hydrophobic silica aerogel particles that have been surface-modified by silylation is found in US Patent No. 7,470,725. In one embodiment, hydrophobic silica aerogel particles surface-modified with trimethylsilyl groups are desirable.

[0059] Non-limiting examples of useful powder fillers in the invention include, for example, talc, mica, silica, silica silylate, cellulose, magnesium aluminum silicate, kaolin, bentone, calcium carbonate, magnesium hydrogen carbonate, hydroxyapatite, boron nitride, perlite powders, fluorophlogopite, sericite, calcined talc, calcined mica, calcined sericite, synthetic mica, lauroyl lysine, metallic soap, bismuth oxychloride, barium sulfate, magnesium carbonate, and starch octenylsuccinate of aluminum, and their mixtures. Powder filters do not include powdered pigments.

[0060] Preferably, the fillers according to the present invention are chosen from cellulose, silica, perlite, silica silylate, aluminum octenylsuccinate starch, and mixtures thereof. SURFACTANTS

[0061] The cosmetic sunscreen composition according to the present invention comprises at least one surfactant.

[0062] Preferably, the surfactants according to the present invention are selected from sodium stearoyl glutamate, cetearyl alcohol and cetearyl glucoside, behenyl alcohol, polyglyceryl-10 laurate, inulin lauryl carbamate, glyceryl stearate and PEG-100 stearate, and mixtures thereof. Additional surfactants

[0063] 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 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.

[0064] 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 (oxyethylated and / or oxypropylened); Oxyalkylated fatty alcohol ethers (oxyethylenated and / or oxypropylenated); sugar esters, for example sucrose stearate; sugar fatty alcohol ethers, in particular alkyl polyglucosides (APGs), such as decyl glucoside, lauryl glucoside, cetearyl glucoside, optionally in a 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 (e.g., biophilic), sugar esters and sodium stearoyl lactylate. FAT COMPOUNDS

[0065] The cosmetic sunscreen composition according to the present invention comprises at least one fatty compound.

[0066] At least one fatty compound according to the present invention provides good spreading capacity.

[0067] Preferably, at least one fatty compound according to the present invention is selected from isopropyl myristate, diisopropyl sebacate, dicaprylyl carbonate, dicaprylyl ether, C-15.19 alkane, such as C15-Ci6 and C17-C18 branched alkanes, Copernicia cerifera (Camauba) wax, and mixtures thereof.

[0068] In addition to preferred fatty compounds, the composition of the present invention may include diisopropyl adipate, isononyl isononanoate, caprylic / capric triglyceride, isopropyl lauroyl sarcosinate, dibutyl adipate, isoamyl caprate-caprylate, and mixtures thereof. ORGANIC UV FILTERS

[0069] The cosmetic sunscreen composition according to the present invention comprises at least one organic UV filter.

[0070] 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

[0071] Preferably, the organic UV filters according to the present invention are selected from butyl methoxydibenzoylmethane, ethylhexyl triazone, bisethylhexyloxyphenol methoxyphenyl triazine, diethylamino hydroxybenzoyl hexyl benzoate, and mixtures thereof. Additional organic UV filters

[0072] 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.

[0073] 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.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. 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.Benzotriazole compounds, especially phenylbenzotriazole derivatives: 2-(2H-benzotriazole-2-yl)-6-doxybenzyl-4-methylbenzylphenyl, branched and linear, and those described in USP 5240975. Benzalmalonate compounds: Dineopentyl 4'-methoxybenzalmalonate. Benzimidazole compounds, especially 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-methylphenol], 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol], and derivatives as described in US patents 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[5-1(dimethylpropyl)benzoxazol-2-yl-(4-phenyl)imino]-6-(2-ethylhexyl)imino-1,3,5-triazine

[0074] In certain embodiments, it is desirable that the filter(s) organic UV(s) chosen from the group consisting of: ethylhexyl methoxycinnamate, homosalate, ethylhexyl salicylate, octocrylene, 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]phenyl]-methanone, 4-methylbenzylidene camphor, terephthalylidene diamphre 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. ADDITIONAL INGREDIENTS

[0075] 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.

[0076] The cosmetic sunscreen composition of the present invention may further include additional ingredients such as solvents, preservatives, perfumes, active compounds or vitamins.

[0077] Non-limiting examples of solvents according to the present invention include alcohols, water, propanediol, among others, and mixtures thereof.

[0078] Non-limiting examples of preservatives include chlorphenesin, among others.

[0079] Non-limiting examples of active compounds according to the present invention include hydroxyacetophenone, citric acid, among others, and mixtures thereof.

[0080] Non-limiting examples of vitamins according to the present invention include tocopherol, among others.

[0081] 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.

[0082] 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.

[0083] 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

[0084] In one embodiment, the composition of cosmetic sunscreen with a light feel and improved SPF is as follows: a. 0.01% to 6.0% by weight of at least one polymer, selected from cetyl hydroxyethylcellulose, dehydroxanthan gum, hydroxyethylcellulose, xanthan gum, modified potato starch, hydroxypropyl starch phosphate, and mixtures thereof; b. 0.01% to 10.0% by weight of at least one filler, selected from cellulose, silica, perlite, silica silylate, aluminum octenylsuccinate starch, and mixtures thereof; c. 0.01% to 10.0% by weight of at least one surfactant, selected from sodium stearoyl glutamate, cetearyl alcohol and cetearyl glucoside, behenyl alcohol, polyglyceryl-10 laurate, inulin lauryl carbamate, glyceryl stearate and PEG-100 stearate, and mixtures thereof; d. 0.05% to 55.0% by weight of at least one fatty compound selected from isopropyl myristate, diisopropyl sebacate, dicaprylyl carbonate, dicaprylyl ether, C15-19 alkane, Copemicia cerifera (Carnauba) wax, and mixtures thereof; and e. 0.2% to 30.0% by weight of at least one organic UV filter selected from butyl methoxydibenzoylmethane, ethylhexyl triazone, bis- ethylhexyloxyphenol methoxyphenyl triazine, diethylamino hydroxybenzoyl hexyl benzoate, and mixtures thereof;

[0085] all weights being based on the total weight of the composition.

[0086] METHOD FOR MANUFACTURING A COSMETIC SUNSCREEN COMPOSITION

[0087] 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:

[0088] Step (a): Preparation of an oily phase by mixing UV filters, surfactants, fatty compounds, until total homogenization;

[0089] Step (b): Preparation of an aqueous phase by mixing water and the aqueous phase ingredients;

[0090] Step (c): Addition of the aqueous phase from step (b) to the oily phase from step (a) under mixing until complete formation of the emulsion;

[0091] Step (d): Addition of polymers to the emulsion of step (c) under mixing until total homogenization;

[0092] Step (e): Addition of the fillers to the emulsion of step (d) under mixing until total homogenization;

[0093] incorporation of additional ingredients in step (e). EXAMPLES Examples 1 to 3

[0094] Non-limiting examples of cosmetic sunscreen compositions according to the present invention are Examples 1 to 3 in Table 1 below.

[0095] [Tables 1] INCI FUNCTION Ex. 1 Ex. 2 Ex. 3 Ex. 4 CETYL HYDROXYETHYLCELLULOSE POLYMER 0.40 0.50 0.10 0.00 DEHYDROXANTHAN GUM 0.40 0.20 0.30 0.00 HYDROXYETHYLCELLULOSE 0.00 0.00 0.00 0.15 XANTHAN GUM 0.00 0.00 0.00 0.30 MODIFIED POTATO STARCH 0.00 0.00 0.00 0.05 PHOSPHATE HYDROXYPROPY L STARCH (HYDROXYPROPYL STARCH PHOSPHATE) 0.00 0.00 0.00 0.20 SILICA FILLER (SILICA) 4.50 4.00 2.50 3.00 SILICA SILYLATE (SILICA SILYLATE) 0.00 0.00 0.30 0.50 CELLULOSE 1.00 1.00 2.00 1.75 STARCH ALUMINUM OCTENYLSUCCINATE (ALUMINUM ST ARCH OCTENYLSUCCINATE) 0.00 0.00 1.00 0.75 SURFACE ACTIVE STEAROYL GLUTAMATE SO DIUM (SODIUM STEAROYL GL UTAMATE) 0.20 0.50 0.40 0.50 CETEARYL ALCOHOL (and) CE TEARYL GLUCOSIDE (CETEAR YL ALCOHOL (and) CETEARYL G LUCOSIDE) 2.00 2.20 1.00 1.80 BEHENYL ALCOHOL (BEHE NYL ALCOHOL) 0.30 0.50 0.50 0.00 POLYGLYCERYL-10 LAURATE 0.50 0.50 0.00 0.00 INULINE LAURYL CARBAMATE 0.80 0.10 0.50 0.00 GLYCERYL STEARATE (and) PEG-100 STEARATE 0.00 0.00 0.00 0.50 DISOPROPYL MYRISTATE FATTY COMPOUND 14.50 16.50 16.80 18.50 DICAPRYLYL ETHER DICAPRYLYL ETHER DIISOPROPYL SEBACATE Diisopropyl Sebacate, Dicaprylyl Carbonate, C15-19 Alkane, Copernicia Cerifera (Cannauba) Wax, Organic UV Filter, Butyl Methoxydibenzoylmethane, 14.00, 13.50, 14.25, 14.50, Ethylhexyl Triazone, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate (DIETHYLAMINO HYDROXYBENZOYL HEXYL BENZOATE) SOLVENT ALCOHOL (ALCOHOL) 7.50 6.00 9.00 5.50 PROPANEDIOL WATER (WATER) QS QS QS QS PRESERVATIVES CHLORPHENESIN (CHLORPHE NESIN) 0.25 0.50 0.40 0.45 PERFUMES PARFUM 0.00 0.00 0.50 0.00 ACTIVE COMPOUND HYDROXYACETOPHENONE (HYDROXYACETOPHENONE) 0.30 0.25 0.10 0.40 CITRIC ACID VITAMIN TOCOPHEROL (TOCOPHEROL) 0.00 0.00 0.00 0.50 Example 5 - FPS Performance

[0096] A first in vivo test was carried out with 5 volunteers in order to determine the sun protection factor (SPF) of the cosmetic sunscreen composition according to Example 1 of the present invention, according to the ISO 24444 methodology. The study was carried out on 5 female subjects, aged 18 to 65 years, of phototypes I to III.

[0097] A second in vivo test was carried out with 10 volunteers to determine the sun protection factor (SPF) of the cosmetic sunscreen composition according to Example 4 of the present invention, according to the ISO 24444 methodology.

[0098] The cosmetic sunscreen compositions according to Examples 1 and 4 of the present invention were applied to the dry skin of the subjects and irradiated with a controlled dose of ultraviolet radiation (product applied with small circular movements without a finger cot and application time between 34 and 39 seconds). The resulting SPF was calculated as an arithmetic mean, with a 95% confidence interval (CI), of all the individual SPF values.

[0099] The average FPS for Example 1 was 42.7.

[0100] The average FPS for Example 4 was 57.1.

[0101] In conclusion, the cosmetic sunscreen compositions of Examples 1 and 4 according to the present invention exhibit high SPF performance. Example 6 - Film Evaluation

[0102] Tests have been carried out to demonstrate the improvements in the film of the cosmetic sunscreen compositions of the present invention. Example 6.1 - Microscopy analysis

[0103] An in vitro study was conducted to evaluate the microscopic visual information of the dispersion of the cosmetic sunscreen composition according to Example 1 of the present invention in comparison with a comparative cosmetic sunscreen composition Cl. The objective of this test is to clarify the homogeneity of the dispersion of the cosmetic sunscreen composition.

[0104] The comparative cosmetic sunscreen composition Cl is shown in Table 2 below.

[0105] [Tables2] FUNCTION INCI Cl POLYMER XANTHAN GUM 0.60 DEHYDROXANTHAN GUM FILLER SILICA 1.65 CELLULOSE SURFACTANT SODIUM STEAROYL GLUTAMATE 2.75 CETEARYL ALCOHOL (and) CETEARYL GLUCOSIDE GLYCERYL OLEATE INULIN LAURYL CARBAMATE FAT COMPOUND ISOPROPYL MYRISTATE 12.00 DIISOPROPYL SEBACATE (DIISOPROPYL SEBACATE) DICAPRYLYL CARBONATE (DICAPRYLYL CARBONATE) ORGANIC UV FILTER PHENYLBENZIMIDAZOLE SULFONIC ACID (PHENYLBENZIMIDAZOLE SULFONIC ACID) 16.50 BUTYL METHOXYDIBENZOYLMETHANE (BUTYL METHOXYDIBENZOYLMETHANE) ETHYLHEXYL TRIAZONE (ETHYLHEXYL TRIAZONE) TEREPHTHALYLIDENE DICAMPHOR SULFONIC ACID (TEREPHTHALYLIDENE DICAMPHOR SULFONIC ACID) BIS-ETHYLHEXYLOXYPHENOL METHOXYPHENOL TRIAZINE (BIS-ETHYLHEXYLOXYPHENOL METHOXYPHENYL TRIAZINE) ALCOHOL SOLVENT (ALCOHOL) 10.00 Propanediol Alkyl Benzoate (Ci2[5]Alkyl Benzoate) Water (QS) Active Compound Arginine 3.00 Triethanolamine Hydroxyacetophenone

[0106] The results of the microscopic analysis are shown in Figures IA and IB. Figures IA and IB demonstrate that the dispersion of the cosmetic sunscreen composition according to Example 1 exhibits improved homogeneity compared to the comparative composition CL Example 6.2 - UV light analysis

[0107] An in vitro and in vivo study was conducted to evaluate the spreading capacity profile and film formation of the cosmetic sunscreen composition according to Example 1 compared to the comparative cosmetic sunscreen composition CL. These compositions were applied in standardized quantities to evaluation plates and to the skin.

[0108] Figures 2A and 2B show the UV light profile of the cosmetic sunscreen composition according to Example 1 compared to the comparative sample CL. The profile of the cosmetic composition of Example 1 is homogeneous, demonstrating that it exhibits more efficient spreading ability and better film formation compared to the comparative composition CL. Example 6.3 - Qualitative Test

[0109] A qualitative research trial was conducted with 16 volunteers, aged 18 to 30 years. The cosmetic sunscreen composition of Example 1 was applied to the face for two days, and the sensory properties of the cosmetic sunscreen composition were evaluated.

[0110] For this evaluation, the volunteers were asked to describe the sensation of the product on the skin and to share their experiences and the reasons for their evaluation. Consequently, the volunteers concluded that the cosmetic sunscreen composition according to Example 1 of the present invention is close to the ideal for a morning routine, with a good texture, a good level of radiance, and a pleasant feel on the skin. Similarly, in the context of a morning routine, the volunteers also concluded that the cosmetic sunscreen composition according to Example 1 of the present invention is suitable for this purpose. The invention is compatible with makeup routines, is easy to apply, has rapid absorption, low stickiness, and a low oily residue.

[0111] During the day, the volunteers verified that the cosmetic sunscreen composition according to Example 1 of the present invention is also compatible with the makeup routine, while offering excellent sebum control and excellent protection against UV rays.

Claims

Demands

1. Cosmetic sunscreen composition with a light feel and enhanced SPF, comprising: (a) at least one polymer, selected from cetyl hydroxyethylcellulose, dehydroxanthan gum, hydroxyethylcellulose, xanthan gum, modified potato starch, hydroxypropyl starch phosphate, and mixtures thereof; (b) at least one filler, selected from cellulose, silica, perlite, silica silylate, aluminum octenyl starch succinate, and mixtures thereof; (c) at least one surfactant, selected from sodium stearoyl glutamate, cetearyl alcohol and cetearyl glucoside, behenyl alcohol, polyglyceryl-10 laurate, inulin lauryl carbamate, glyceryl stearate and PEG-100 stearate, and mixtures thereof;(d) at least one fatty compound selected from isopropyl myristate, diisopropyl sebacate, dicaprylyl carbonate, dicaprylic ether, Ci5-i9 alkane, Copemicia cerifera (Carnauba) wax, and mixtures thereof; and (e) at least one organic UV filter, selected from butyl methoxydibenzoylmethane, ethylhexyl triazone, bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylamino hydroxybenzoyl hexyl benzoate, and mixtures thereof.

2. Cosmetic sunscreen composition, according to claim 1, wherein at least one polymer is present in a concentration from 0.01% to 6.0% by weight, relative to the total weight of the composition.

3. Cosmetic sunscreen composition, according to claim 1, wherein at least one filler is present in a concentration from 0.01% to 10.0% 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 0.01% to 10.0% by weight, relative to the total weight of the composition.

5. Cosmetic sunscreen composition, according to claim 1, wherein at least one fatty compound is present in a concentration ranging from 0.05% to 55.0% by weight, relative to the total weight of the composition.

6. Cosmetic sunscreen composition, according to claim 1, wherein at least one organic UV filter is present in a concentration from 0.2% to 30.0% by weight, relative to the total weight of the composition.

7. Cosmetic sunscreen composition according to claim 1, wherein the composition is free of silicones.

8. Cosmetic sunscreen composition, according to claim 1, wherein it further comprises at least one additional ingredient selected from solvents, preservatives, perfumes, active compounds, or vitamins.

9. Cosmetic sunscreen composition with enhanced SPF, comprising: (a) 0.075% to 2.5% by weight of at least one polymer, selected from cetyl hydroxyethylcellulose, dehydroxanthan gum, hydroxyethylcellulose, xanthan gum, modified potato starch, hydroxypropyl starch phosphate, and mixtures thereof; (b) 0.1% to 6.0% by weight of at least one filler, selected from cellulose, silica, perlite, silica silylate, aluminum octenylsuccinate starch, and mixtures thereof; (c) 0.075% to 5.0% by weight of at least one surfactant, selected from sodium stearoyl glutamate, cetearyl alcohol and cetearyl glucoside, behenyl alcohol, polyglyceryl-10 laurate, inulin lauryl carbamate, glyceryl stearate and PEG-100 stearate, and mixtures thereof;(d) 0.5% to 20.0% by weight of at least one fatty compound, selected from isopropyl myristate, diisopropyl sebacate, dicaprylyl carbonate, dicaprylyl ether, C15-19 alkane, Copemicia cerifera (Carnauba) wax, and mixtures thereof; and (e) 0.75% to 20.0% by weight of at least one organic UV filter selected from butyl methoxydibenzoylmethane, ethylhexyl triazone, bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylamino hydroxybenzoyl hexyl benzoate, and mixtures thereof; 23 in which all weights are based on the total weight of the composition.

10. Cosmetic sunscreen composition according to any one of claims 1 or 9, wherein the composition has an SPF ranging from 30 to 80.

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