WO2016008117A1

WO2016008117A1 - Transparent sprayable suncreen composition

Info

Publication number: WO2016008117A1
Application number: PCT/CN2014/082326
Authority: WO
Inventors: Runshuang LU; Xiuxia Wang
Original assignee: L'oreal
Priority date: 2014-07-16
Filing date: 2014-07-16
Publication date: 2016-01-21
Also published as: CN106535868A

Abstract

A composition, notably a sunscreen composition, comprises: a) at least two hydrophilic gelling agent, wherein at least one is a gellan gum or a derivative thereof, and b) one or more UV-screening agent.

Description

TRANSPARENT SPRAYABLE SUNCREEN COMPOSITION TECHNICAL FIELD

The present invention relates to the field of cosmetics, and especially to the field of sunscreen compositions. BACKGROUND ART

It is known that radiation with wavelengths of between 280 nm and 400 nm permits tanning of the human epidermis and that radiation with wavelengths of between 280 and 320 nm, known as UV-B rays, harms the development of a natural tan. Exposure is also liable to bring about a detrimental change in the biomechanical properties of the epidermis, which is reflected by the appearance of wrinkles, leading to premature ageing of the skin.

It is also known that UV-A rays with wavelengths of between 320 and 400 nm penetrate more deeply into the skin than UV-B rays. UV-A rays cause immediate and persistent browning of the skin. Daily exposure to UVA rays, even of short duration, under normal conditions can result in damage to the collagen fibers and the elastin, which is reflected by a modification in the microrelief of the skin, the appearance of wrinkles and uneven pigmentation (liver spots, lack of uniformity of the complexion). Normal sprayable UV products contain mainly hydrophobic UV filter (or in other words hydrophobic UV-screening agent) in emulstion system. Some of them contain both oil-soluble and water-soluble UV filters and provide white spray mist, while some of them only contain oil-soluble UV filters. But such compositions contain only water-soluble UV filters (or in other words hydrophilic UV-screening agents). Water soluble UV filters provide only limited photoprotection ability. Conventional UV sprays have a mist in white color, which give consumers a heavy feeling. There is need for developing compositions, in particular sprayable sunscreen composition, having a good UV-screening ability and avoiding the white color of conventional spray.

Due to the presence of high amount of hydrophobic UV filters, the products, as such, have a heavy feeling on the skin. Besides, the mist after spraying is colored (white) and therefore gives an unpleasant feeling on the skin (usually defined as "heavy feeling"), which is not favored by the consumers, especially those who do not prefer makeup products. There is thus need for developing translucent or transparent compositions, in particular sunscreen composition, while presenting good feeling on the skin. There is also need for developing compositions, in particular sunscreen composition, having only water soluble UV filters while being uncolored when applied onto the skin.

Anti-sun products provided in spray form are increasingly sought by consumers because of their ease of use and their cosmetic pleasantness. Unlike conventional anti-sun milks and creams, it is particularly difficult to obtain anti-sun compositions in spray form having a high protection index.

AI MS OF THE INVENTION

The present invention aims to provide a translucent or transparent composition, in particular a sunscreen composition presenting a good UV-screening ability.

The present invention also aims to provide a translucent or transparent composition, in particular a sunscreen composition, having only water soluble UV filters while presenting good feeling on the skin.

Another aim of the present invention is to provide a composition, in particular a sunscreen composition, having only water soluble UV filters while being uncolored when applied onto the skin.

Another aim of the present invention is to provide a sprayable composition, in particular a sprayable sunscreen composition, solving the above mentioned problems.

In more general terms, the invention aims to provide a translucent or transparent sprayable sunscreen composition. More particularly, such composition would be a transparent spray with mist and light texture when applied onto the skin, as appreciated by the user.

DISCLOSURE OF INVENTION

It has been discovered, in accordance to the present invention, that these objectives could be achieved with a composition, notably a sunscreen composition, comprising at least two hydrophilic gelling agent, wherein at least on is a gellan gum or a derivative thereof, and one or more UV-screening agents.

In fact, the use of at least one gellan gum improves the sunblocking or sun screening effect of a UV-screening composition or sunscreen composition. It has also been discovered that gellan gum and enable the preparation of a translucent or transparent sprayable UV-screening composition or sunscreen composition. By "improving the sunblocking or sunscreening effect", it is in particular meant the SPF (Sun Protection Factor) and/or PPD (Persistent Pigment Darkening) value of a composition is higher when the gellan gum is present in the composition comparatively to substantially the same composition without gellan gum. SPF is preferably measured according to International standard EN ISO 24444:2010 Cosmetics - Sun protection test methods - In vivo determination of the sun protection factor (SPF).

PPD is skin darkening that persists more than 2 h after the end of UVA exposure. It is determined according to ISO 24442:201 1 (en) Cosmetics - Sun protection test methods - In vivo determination of sunscreen UVA protection. The term "sunscreen composition" or "sunscreen agent" means any composition or ingredient that absorbs or scatters at least a part of UV radiations and prevents said UV radiations from reaching the skin, especially deeper layers of the skin (typically the dermis). This term is broadly used to cover sunblocks and sunscreens. The efficacy of such compositions or agents is typically measured by the SPF and/or PPD value. The term "keratin material" means the skin (of the body, face and around the eyes), hair, eyelashes, eyebrows, bodily hair, nails, lips or mucous membranes, and preferably the skin.

DETAILED DESCRIPTION OF THE INVENTION

The composition according to the present invention relates to composition, notably a sunscreen composition, comprising: a) at least two hydrophilic gelling agent, wherein at least one is a gellan gum or a derivative thereof, and b) one or more UV-screening agents.

The composition of the present invention comprises a combination of hydrophilic gelling agent, wherein at least one of the gelling agents is gellan gum or a derivative thereof. Gellan gum is a polysaccharide produced by aerobic fermentation of Sphingomonas elodea, more commonly known as Pseudomonas elodea. This linear polysaccharide comprises a sequence of the following monosaccharides: D-glucose, D-glucuronic acid, and L-rhamnose. In the native state, gellan gum is highly acylated. The at least one gellan gum, for example, used in the compositions according to the disclosure is an at least partially deacylated gellan gum. This at least partially deacylated gellan gum may be obtained by a high-temperature alkaline treatment.

A KOH or NaOH solution can be used, for example. The purified gellan gum sold under the trade name "Kelcogel^®" by the company Kelco is suitable for preparing the compositions as disclosed herein.

The gellan gum derivatives are all products obtained by performing standard chemical reactions such as, for example, esterifications or addition of a salt of an organic or mineral acid.

An example of at least one gellan gum derivative that may be used is welan gum. Welan gum is a gellan gum modified by fermentation using the Alcaligenes strain ATCC 31 555. Welan gum has a repeating pentasaccharide structure formed from a main chain comprising D-glucose, D- glucuronic acid, and L-rhamnose units on which are grafted a pendent L-rhamnose or L- mannose unit.

The welan gum sold under the trade name "Kelco Crete^®" by the company Kelco is suitable for preparing the compositions according to the present disclosure.

The amount of at least one gum chosen from gellan gums and derivatives thereof used in the compositions as disclosed herein ranges from 0.005% to 10% by weight, such as from 0.05% to 5% by weight and for example, from 0.1 % to 3% by weight, relative to the total weight of the composition. According to a particular embodiment, the composition comprises in addition to gellan gum a second hydrophilic gelling agent.

Such gelling agent is preferably selected among taurate copolymers.

In one embodiment, the composition comprises from 0.005% to 5% by weight, preferably from 0.01 % to 2% by weight, more preferably from 0.05% to 1 % by weight, of hydrophilic gelling agent, in addition to the gellan gum or its derivatives, preferably a taurate copolymer, relative to the total amount of the composition.

In a specific embodiement, said taurate copolymer is at least partially formed from acryloyl dimethyltaurate as a monomer unit. According to a particular embodiment, the acryloyi dimethyltaurate is copolymerized with a monomer selected from the group consisting of styrene, acrylic acid, methacrylic acid, vinyl chloride, vinyl acetate, vinyl pyrrolidone, isoprene, vinyl alcohol, vinyl methylether, chloro- styrene, maleic acid, acrylamide, methacrylamide and mixtures thereof, polyacrylamides and polymers and copolymers of 2-acrylamido-2-methylpropanesulphonic acid which are optionally crosslinked and/or neutralized.

Preferred examples of this hydrophilic gelling agent are:

• polyacrylamides and polymers and copolymers of 2-acrylamido-2- methylpropanesulphonic acid which are optionally crosslinked and/or neutralized, such as the poly(2-acrylamido-2-methylpropanesulphonic acid) sold by Clariant under the name "Hostacerin AMPS^®" (INCI name: ammonium polyacryloyldimethyl taurate, made with AMPS^® monomer (2-acrylamido-2-methylpropanesulfonic acid from LUBRIZOL); or crosslinked anionic copolymers of acrylamide and of AMPS^® which are provided in the form of an emulsion, such as those sold under the name of Sepigel^® 305 (CTFA name: Polyacrylamide/C₁₃-C₁₄ lsoparaffin/Laureth-7), under the name of Simulgel 600 (CTFA name: Acrylamide/Sodium Acryloyldimethyl Taurate

Copolymer/lsohexadecane/Polysorbate 80) by SEPPIC or under the name of Simulgel EG (CTFA name: Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer and Isohexadecane and Polysorbate 80); and any mixture thereof.

Other gelling agents may be present in the composition of the invention such as for example: o modified or unmodified carboxyvinyl polymers, such as the products sold under the Carbopol^® (INCI name: carbomer) and Pemulen (INCI name: Acrylates/C10- 30 alkyl acrylate crosspolymer) names by Goodrich; o acrylate/acrylonitrile copolymers, such as Hypan SS201 , sold by Kingston; o polysaccharide biopolymers, such as xanthan gum, guar gum, alginates or modified or unmodified celluloses (other than gellan gum which is already present in the composition); o inorganic compounds, such as smectites or modified or unmodified hectorites, such as the Bentone products sold by Rheox, the Laponite products sold by Southern Clay Products or the product Veegum HS sold by R. T. Vanderbilt; o and their mixtures.

Use is preferably made, as hydrophilic gelling agent, of optionally crosslinked polymers and copolymers of 2-acrylamido-2-methylpropanesulphonic acid.

The hydrophilic gelling agent, different from gellan gum and its derivatives, can be present in the composition in a content (in dry material) ranging for example from 0.005% to 5% by weight, preferably from 0.01 % to 2% by weight and better still from 0.05% to 1 % by weight, with respect to the total weight of the composition.

According to a specific embodiment, the hydrophilic gelling agent, different from gellan gum and its derivatives, is present in the composition in a content (in dry material) less than 1 % by weight, with respect to the total weight of the composition, preferably less than 0.5% by weight, with respective to the total weight of the composition.

The compositions according to the invention comprises organic or inorganic UV-screening agents, also known as filtering agents or filters, filtering wavelengths within the UVA and/or UVB ranges, which are hydrophilic or lipophilic or insoluble in routine cosmetic solvents. The organic filters may be selected from anthranilics; cinnamic derivatives; salicylic derivatives; benzophenone derivatives; phenyl benzotriazole derivatives; benzalmalonate derivatives particularly those cited in the patent US5624663; phenyl benzimidazole derivatives; imidazolines; 4,4-diarylbutadiene derivatives; bis-benzoazolyle derivatives as described in the patents EP669323 and US 2,463,264; p-aminobenzoic acid (PABA) derivatives; methylene bis- (hydroxyphenyl benzotriazole) derivatives as described in the applications US5,237,071 , US 5, 166,355, GB2303549, DE 197 26 184 and EP8931 19; benzoxazole derivatives as described in the patent applications EP0832642, EP1027883, EP1300137 and DE10162844; filter polymers and filter silicones such as those particularly described in the application WO- 93/04665; dimers derived from a-alkylstyrene such as those described in the patent application DE19855649; 4,4-diarylbutadienes as described in the applications EP0967200, DE19746654, DE19755649, EP-A-1008586, EP1 133980 and EP133981 ; merocyanine derivatives such as those described in WO04006878, WO05058269 and WO06032741 and the mixtures thereof.

More preferably the composition comprises one or more hydrophilic UV-screening agents. In a preferred embodiment, said composition comprises only hydrophilic UV-screening agents among UV-screening agents present in the composition. In one embodiment the comprises less than 0.2%, preferably less than 0.1 %, more preferably less than 0.05%, of hydrophobic (or in other words "lipophilic") UV-screening agent. In a particular embodiment, the composition comprises 0% hydrophobic UV-screening agent.

The term "hydrophilic UV-screening agent" means any organic or mineral sunscreen agent capable of being fully dissolved in molecular form in a liquid aqueous phase or of being dissolved in colloidal form (for example in micellar form) in a liquid aqueous phase.

The term "hydrophobic UV-screening agent" or "lipophilic screening agent" means any organic or mineral sunscreen agent which can be fully dissolved in molecular state in a liquid fatty phase or which can be dissolved in colloidal form (for example in micellar form) in a liquid fatty phase.

The term " insoluble UV-screening agent" means any sunscreen agent which has a water- solubility of less than 0.5% by weight and a solubility of less than 0.5% by weight in the majority of organic solvents such as liquid paraffin, fatty alkyl benzoates and fatty acid triglycerides, for example Miglyol 812^® sold by the company Dynamit Nobel. This solubility, determined at 70°C, is defined as the amount of product in solution in the solvent at equilibrium with an excess of solid in suspension after returning to room temperature. It may be readily evaluated in the laboratory.

Examples of organic UV filters include those referred to hereinafter using the INCI name thereof: Classification according to UVA and/or UVB radiation wavelength range

1/ Lipophilic UV-A screening agents

Dibenzoylmethane derivatives:

Isopropyl Dibenzoylmethane;

Aminobenzophenones:

n-hexyl 2-(4-diethylamino-2-hydroxybenzoyl)-benzoate particularly sold under the trade name "UVINUL A +" by BASF;

1 , 1 '-(1 ,4-piperazinediyl)bis[1 -[2-[4-(diethylamino)-2-hydroxybenzoyl]phenyl]-methanone

(CAS 919803-06-8)

Anthranilic derivatives:

Menthyl anthranilate particularly sold under the trade name "NEO HELIOPAN MA" by SYMRISE; 4,4-diarylbutadiene derivatives: 1 , 1 -dicarboxy (2,2'-dimethyl-propyl)-4,4-diphenylbutadiene;

Merocyanine derivatives:

Octyl-5-N,N-diethylamino-2-phenysulfonyl-2,4-pentadienoate;

Within the scope of the invention, and according to one particular embodiment, the following lipophilic filters are used:

Butyl Methoxydibenzoylmethane

II/ Hydrophilic UV-A screening agents

The bis-benzoazolyl derivatives as described in the patents EP 669 323, and US 2,463,264 and more specifically the compound Disodium Phenyl Dibenzimidazo tetra-sulfonate sold under the trade name "NEO HELIOPAN AP" by SYMRISE;

The preferred hydrophilic UVA screening agent is Terephthalylidene Dicamphor Sulfonic Acid.

Ill/ Lipophilic UV-B screening agents

Para-aminobenzoates:

Ethyl PABA;

Ethyl Dihydroxypropyl PABA;

Ethylhexyl Dimethyl PABA (ESCALOL 507 from ISP);

Salicylic derivatives:

Homosalate particularly sold under the name "Eusolex HMS" by Rona/EM Industries;

Ethylhexyl Salicylate particularly sold under the name "NEO HELIOPAN OS" by SYMRISE; Dipropyleneglycol Salicylate particularly sold under the name "DIPSAL" by SCHER;

TEA Salicylate sold under the name "NEO HELIOPAN TS" by SYMRISE;

Cinnamates

Ethylhexyl Methoxycinnamate particularly sold under the trade name "PARSOL MCX" by DSM Nutritional Products, Inc.;

Isopropyl Methoxy cinnamate;

Isoamyl Methoxy cinnamate particularly sold under the trade name "NEO HELIOPAN E 1000" by SYMRISE; Diisopropyl Methylcinnamate;

Cinnoxate;

Glyceryl Ethylhexanoate Dimethoxycinnamate;

β,β'-diphenylacrylate derivatives:

Etocrylene, particularly sold under the trade name "UVINUL N35" by BASF;

Benzylidene camphor derivatives:

3-Benzylidene camphor manufactured under the name "MEXORYL SD" by CHIMEX;

Methylbenzylidene camphor sold under the name "EUSOLEX 6300" by MERCK;

Polyacrylamidomethyl Benzylidene Camphor manufactured under the name "MEXORYL SW" by CHIMEX;

Triazine derivatives:

Ethylhexyl triazone particularly sold under the trade name "UVINUL T150" by BASF;

Diethylhexyl Butamido Triazone particularly sold under the trade name "UVASORB HEB" by SIGMA 3V;

2,4,6-tris(dineopentyl 4'-amino benzalmalonate)-s-triazine;

2,4,6-tris(diisobutyl 4'-amino benzalmalonate)-s- triazine;

2,4-bis(dineopentyl 4'-amino benzalmalonate)-6-(n-butyl 4'-aminobenzoate)-s-triazine;

2,4-bis(n-butyl 4'-amino benzoate)-6-(aminopropyltrisiloxane)-s-triazine;

the symmetrical triazine filters described in the patent US 6,225,467, the application WO 2004/085412 (see compounds 6 and 9) or the document "Symmetrical Triazine Derivatives" IP.COM Journal, IP.COM INC WEST HENRIETTA, NY,

US (September 20, 2004) particularly 2,4,6-tris-(biphenyl)-1 ,3,5-triazine (particularly 2,4,6- tris(biphenyl-4-yl-1 ,3,5-triazine) and 2, 4, 6-tris(terphenyl)-1 ,3,5-triazine, the latter two filters being described in the BEIERSDORF applications WO 06/035000, WO 06/034982, WO 06/034991 , WO 06/035007, WO 2006/034992, WO 2006/034985).

Imidazoline derivatives:

Ethylhexyl Dimethoxybenzylidene Dioxoimidazoline Propionate,

Benzalmalonate derivatives: Polyorganosiloxanes with a benzalmalonate function such as Polysilicone-15 particularly sold under the trade name "PARSOL SLX" by DSM Nutritional Products, Inc.;

Di-neopentyl 4'-methoxybenzalmalonate;

Within the scope of the invention, and according to one particular embodiment, the following lipophilic UV-B filters are used in the composition according to the invention:

Ethylhexylsalicylate;

Octocrylene;

Ethylhexyl triazone.

IV/ Hydrophilic UV-B screening agents

The following p-aminobenzoic acid (PABA) derivatives:

PABA,

Glyceryl PABA and

PEG-25 PABA particularly sold under the trade name "UVINUL P25" by BASF.

Phenylbenzimidazole Sulfonic Acid particularly sold under the trade name "EUSOLEX 232" by MERCK,

ferulic acid,

salicylic acid,

DEA methoxycinnamate,

Benzylidene Camphor Sulfonic Acid manufactured under the name "MEXORYL SL" by CHIMEX, Camphor Benzalkonium Methosulfate manufactured under the name "MEXORYL SO" by CHIMEX,

The preferred hydrophilic UVB screening agent is Phenylbenzimidazole Sulfonic Acid.

V/ Combined lipophilic UVA and UVB screening agents

Benzophenone derivatives

Benzophenone-1 particularly sold under the trade name "UVINUL 400" by BASF;

Benzophenone-2 particularly sold under the trade name "UVINUL D50" by BASF; Benzophenone-3 or Oxybenzone particularly sold under the trade name "UVINUL M40" by BASF;

Benzophenone-6 particularly sold under the trade name "Helisorb 1 1 " by Norquay;

Benzophenone-8 particularly sold under the trade name "Spectra-Sorb UV-24" by American Cyanamid;

Benzophenone-10;

Benzophenone-1 1 ;

Benzophenone-12;

Phenyl benzotriazole derivatives:

Drometrizole Trisiloxane particularly sold under the name "Silatrizole" by RHODIA CHIMIE or manufactured under the name "Meroxyl XL" by CHIMEX;

Methylene bis-Benzotriazolyl Tetramethylbutylphenol, sold in solid form particularly under the trade name "MIXXIM BB/100" by FAIRMOUNT CHEMICAL or in micronized form in aqueous dispersion particularly under the trade name "TINOSORB M" by CIBA SPECIALTY CHEMICALS;

Benzoxazole derivatives:

2,4-bis-[5-1 (dimethylpropyl)benzoxazol-2-yl-(4-phenyl)-imino]-6-(2-ethylhexyl)-imino-1 ,3,5- triazine particularly sold under the name Uvasorb K2A by Sigma 3V.

The preferential lipophilic organic UVA and UVB filters are selected from:

Drometrizole Trisiloxane;

Methylene bis-Benzotriazolyl Tetramethylbutylphenol;

Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine.

VI/ Combined hydrophilic UVA and UVB screening agents

Benzophenone derivatives comprising at least one sulfonic radical such as

Benzophenone-4 particularly sold under the trade name "UVINUL MS 40" by BASF,

Benzophenone-5 and

Benzophenone-9. The composition according to the invention may also comprise mineral filters which are pigments. The pigments may be coated or uncoated.

The coated pigments are pigments which have undergone one or a plurality of chemical, electronic, mechanochemical and/or mechanical surface treatments with compounds as described for example in Cosmetics & Toiletries, February 1990, Vol. 105, p. 53-64, such as amino acids, beeswax, fatty acids, fatty alcohols, anionic surfactants, lecithins, sodium, potassium, zinc, iron or aluminum salts of fatty acids, metal (titanium or aluminum) alkoxides, polyethylene, silicones, proteins (collagen, elastin), alkanolamines, silicon oxides, metal oxides or sodium hexametaphosphate.

According to the prior art, the silicones are organosilicate polymers or oligomers with a linear or cyclic, branched or cross-linked structure, with a variable molecular weight, obtained by polymerization and/or polycondensation of suitably functionalized silanes, and essentially consisting of a repetition of primary structural units wherein the silicon atoms are interconnected by oxygen atoms (siloxane bond), optionally substituted hydrocarbon radicals being directly bound via a carbon atom on said silicon atoms.

The term "silicones" also covers the silanes required for the preparation thereof, particularly, alkyl silanes.

The silicones used for coating pigments suitable for the present invention are preferably selected from the group containing alkyl silanes, polydialkylsiloxanes, and polyalkylhydrogen siloxanes. More preferentially, the silicones are selected from the group containing octyl trimethyl silane, polydimethylsiloxanes and polymethylhydrogen siloxanes.

Obviously, prior to the treatment thereof with silicone, the metal oxide pigments may have been treated with other surface agents, particularly cerium oxide, alumina, silica, aluminum compounds, silicon compounds, or mixtures thereof.

The coated pigments are, for example, titanium oxides coated with:- silica such as the product "SUNVEIL" from IKEDA and the product "Eusolex T-AVO" from MERCK

- silica and iron oxide such as the product "SUNVEIL F" from IKEDA,

- silica and alumina such as the products "MICROTITANIUM DIOXIDE MT 500 SA" and "MICROTITANIUM DIOXIDE MT 100 SA" from TAYCA, "TIOVEIL" from TIOXIDE, and "Mirasun TiW 60" from Rhodia, - alumina such as the products "TIPAQUE TTO-55 (B)" and "TIPAQUE TTO-55 (A)" from ISHIHARA, and "UVT 14/4" from KEMIRA,

- alumina and aluminum stearate such as the product "MICROTITANIUM DIOXIDE MT 100 TV, MT 100 TX, MT 100 Z, MT-01 " from TAYCA, the products "Solaveil CT-10 W", "Solaveil CT 100" and "Solaveil CT 200" from UNIQEMA,

- silica, alumina and alginic acid such as the product "MT-100 AQ" from TAYCA,

- alumina and aluminum laurate such as the product "MICROTITANIUM DIOXIDE MT 100 S" from TAYCA,

- iron oxide and iron stearate such as the product "MICROTITANIUM DIOXIDE MT 100 F" from TAYCA,

- zinc oxide and zinc stearate such as the product "BR351 " from TAYCA,

- silica and alumina and treated with a silicone such as the products "MICROTITANIUM DIOXIDE MT 600 SAS", "MICROTITANIUM DIOXIDE MT 500 SAS" or "MICROTITANIUM DIOXIDE MT 100 SAS" from TAYCA,

- silica, alumina, aluminum stearate and treated with a silicone such as the product "STT-30- DS" from TITAN KOGYO,

- silica and treated with a silicone such as the product "UV-TITAN X 195" from KEMIRA, or the product SMT-100 WRS from TAYCA.

- alumina and treated with a silicone such as the products "TIPAQUE TTO-55 (S)" from ISHIHARA, or "UV TITAN M 262" from KEMIRA,

triethanolamine such as the product "STT-65-S" from TITAN KOGYO,

- stearic acid such as the product "TIPAQUE TTO-55 (C)" from ISHIHARA,

- sodium hexametaphosphate such as the product "MICROTITANIUM DIOXIDE MT 150 W" from TAYCA.

Further titanium oxide pigments treated with a silicone are for example Ti0₂ treated with octyl trimethyl silane such as that sold under the trade name "T 805" by DEGUSSA SILICES, Ti0₂ treated with a polydimethylsiloxane such as that sold under the trade name "70250 Cardre UF Ti02SI3" by CARDRE, anatase/rutile Ti0₂ treated with a polydimethylhydrogen siloxane such as that sold under the trade name "MICRO TITANIUM DIOXYDE USP GRADE HYDROPHOBIC" by COLOR TECHNIQUES. The uncoated titanium oxide pigments are for example sold by TAYCA under the trade names "MICROTITANIUM DIOXIDE MT 500 B" or "MICROTITANIUM DIOXIDE MT600 B", by DEGUSSA under the name "P 25", by WACKHER under the name "Oxyde de titane transparent PW", by MIYOSHI KASEI under the name "UFTR", by TOMEN under the name "ITS" and by TIOXIDE under the name "TIOVEIL AQ".

The uncoated zinc oxide pigments are for example

- those marketed under the name "Z-cote" by Sunsmart;

- those marketed under the name "Nanox" by Elementis;

- those marketed under the name "Nanogard WCD 2025" by Nanophase Technologies;

The coated zinc oxide pigments are for example

- those marketed under the name "Z-COTE HP1 " by SUNSMART (ZnO coated with dimethicone);

- those marketed under the name "CS-5 zinc oxide" by Toshibi (ZnO coated with polymethylhydrogen siloxane);

- those marketed under the name "Nanogard Zinc Oxide FN" by Nanophase Technologies (in 40% dispersion in Finsolv TN, C12-C15 alcohol benzoate);

- those marketed under the name "DAITOPERSION ZN-30" and "DAITOPERSION Zn-50" by Daito (dispersions in cyclopolymethylsiloxane/oxyethylenated polydimethylsiloxane, containing 30% or 50% zinc oxides coated with silica and polymethylhydrogen siloxane);

- those marketed under the name "NFD Ultrafine ZnO" by Daikin (ZnO coated perfluoroalkyl phosphate and perfluoroalkylethyl-based copolymer in dispersion in cyclopentasiloxane);

- those marketed under the name "SPD-Z1 " by Shin-Etsu (ZnO coated with silicone-grafted acrylic polymer, dispersed in cyclodimethylsiloxane);

- those marketed under the name "Escalol Z100" by ISP (ZnO treated with alumina and dispersed in the ethylhexyl methoxycinnamate / PVP-hexadecene copolymer / methicone mixture);

- those marketed under the name "Fuji ZnO-SMS-10" by Fuji Pigment (ZnO coated with silica and polymethylsilsesquioxane);

- those marketed under the name "Nanox Gel TN" by Elementis (ZnO in 55% dispersion in C₁₂- C₁₅ alcohol benzoate with hydroxystearic acid polycondensate). The uncoated cerium oxide pigments are sold for example under the name "COLLOIDAL CERIUM OXIDE" by RHONE POULENC.

The uncoated iron oxide pigments are for example sold by ARNAUD under the names "NANOGARD WCD 2002 (FE 45B)", "NANOGARD IRON FE 45 BL AQ", "NANOGARD FE 45R AQ, "NANOGARD WCD 2006 (FE 45R)", or by MITSUBISHI under the name "TY-220".

The coated iron oxide pigments are for example sold by ARNAUD under the names "NANOGARD WCD 2008 (FE 45B FN)", "NANOGARD WCD 2009 (FE 45B 556)", "NANOGARD FE 45 BL 345", "NANOGARD FE 45 BL", or by BASF under the name "TRANSPARENT IRON OXIDE".

It is also possible to cite metal oxide mixtures, particularly of titanium dioxide and cerium dioxide, including the mixture of equal weights of titanium dioxide and cerium dioxide coated with silica, sold by IKEDA under the name "SUNVEIL A", and the mixture of titanium dioxide and zinc dioxide coated with alumina, silica and silicone such as the product "M 261 " sold by KEMIRA or coated with alumina, silica and glycerin such as the product "M 21 1 " sold by KEMIRA.

The pigments may be introduced into the compositions according to the invention as is or in pigment paste form, i.e. in a mixture with a dispersion agent, as described for example in the document GB-A-2206339.

In a specific embodiment, said hydrophilic UV-screening agent is selected from the group consisting of sulfonic acid based hydrophilic UV-screening agents. In a specific embodiment, the composition of the invention comprises phenylbenzimidazole sulfonic acid and/or terephtalylidene dicamphor sulfonic acid.

In general the composition of the invention comprises from 3% to 40% by weight, more preferably from 5% to 30% by weight, and even more preferably from 7% to 20% by weight, relative to the total weight of the composition, of UV-screening agents.

More particularly the composition of the invention comprises from 3% to 40% by weight, more preferably from 5% to 30% by weight, and even more preferably from 7% to 20% by weight, relative to the total weight of the composition, of hydrophilic UV-screening agents.

In a specific embodiment, the composition of the invention does not comprise hydrophobic UV- screening agents. According to one embodiment, the composition in accordance with the present invention may further comprise an oily phase.

The term "oil" means any fatty substance that is in liquid form at room temperature (20-25°C) and at atmospheric pressure. The "fatty substance" comprises at least one hydrocarbon chain "fat" that is to say a linear hydrocarbon chain of at least 4 carbon atoms, unsaturated or not unsaturated, optionally substituted, in particular a linear hydrocarbon chain C₅-C₃₀.

The oily phase that is suitable for preparing the cosmetic compositions according to the invention may comprise hydrocarbon-based oils, silicone oils, fluoro oils or non-fluoro oils, or mixtures thereof. The oils may be volatile or non-volatile.

They may be of animal, plant, mineral or synthetic origin.

The term "non-volatile oil" means an oil that remains on the skin or the keratin fibre at room temperature and atmospheric pressure. More specifically, a non-volatile oil has an evaporation rate strictly less than 0.01 mg/cm2/min. To measure this evaporation rate, 15 g of oil or of oil mixture to be tested are placed in a crystallizing dish 7 cm in diameter, which is placed on a balance in a large chamber of about 0.3 m3 that is temperature-regulated, at a temperature of 25°C, and hygrometry-regulated, at a relative humidity of 50%. The liquid is allowed to evaporate freely, without stirring it, while providing ventilation by means of a fan (Papst-Motoren, reference 8550 N, rotating at 2700 rpm) placed in a vertical position above the crystallizing dish containing said oil or said mixture, the blades being directed towards the crystallizing dish, 20 cm away from the bottom of the crystallizing dish. The mass of oil remaining in the crystallizing dish is measured at regular intervals. The evaporation rates are expressed in mg of oil evaporated per unit of area (cm2) and per unit of time (minutes). The term "volatile oil" means any non-aqueous medium that is capable of evaporating on contact with the skin or the lips in less than one hour, at room temperature and atmospheric pressure. The volatile oil is a cosmetic volatile oil, which is liquid at room temperature. More specifically, a volatile oil has an evaporation rate of between 0.01 and 200 mg/cm2/min, limits included. For the purposes of the present invention, the term "silicone oil" means an oil comprising at least one silicon atom, and especially at least one Si-0 group.

The term "fluoro oil" means an oil comprising at least one fluorine atom.

The term "hydrocarbon-based oil" means an oil mainly containing hydrogen and carbon atoms. The oils may optionally comprise oxygen, nitrogen, sulfur and/or phosphorus atoms, for example in the form of hydroxyl or acid radicals.

In one particular embodiment, the composition of the invention is oil-free.

For the purposes of the invention, the term "oil-free" mean a composition comprising a single liquid phase which is an aqueous phase (a liquid phase including water). The oil-free composition of the invention does not comprise an oily phase. The term "oily phase" means, according to the invention, a phase that forms a two-phase liquid system with the aqueous phase at 20-25°C and 101325Pa. Such "oily phase" generally comprises at least one oil. The term "oil" means any fatty substance which is in liquid form at room temperature (20 to 25°C) and at atmospheric pressure (760 mmHg). The "fatty substance" comprises at least one hydrocarbon chain "fat" that is to say a linear hydrocarbon chain of at least 4 carbon atoms, unsaturated or not unsaturated, optionally substituted, and in particular a linear hydrocarbon chain C₅-C₃₀.The term "oil" does not cover for example water-soluble active ingredients, water- soluble UV-screening agents, and water-soluble glycols (glycol generally comprising no linear hydrocarbon chain of at least 4 carbon atoms, unsaturated or not unsaturated, optionally substituted).

In one embodiment, the composition of the present invention comprises: (i) from 0.005% to 10%, preferably from 0.05% to 5%, more preferably from 0.1 % to 3%, of gellan gum or a derivative thereof; (ii) from 0.005% to 5%, preferably from 0.01 % to 2%, more preferably from 0.05% to 1 %, of hydrophilic gelling agent, in addition to the gellan gum or its derivatives, preferably a taurate copolymer; and (iii) from 3% to 40% preferably from 5% to 30%, more preferably from 7 to 20% of one or more UV-screening agents, wherein % are expressed by weight relative to the total weight of the composition.

In one embodiment, the composition according to the invention comprises a continuous aqueous phase optionally with solid particles dispersed therein. The aqueous phase comprises water. In one embodiment, the continuous aqueous phase may comprise at least one C C₄ alcohol, preferably in an amount of 0.1 % to 20% by weight, relative to the total weight of the composition.

A alcohol according to the present invention may preferably be chosen from linear or branched, saturated or unsaturated alcohols with at least one hydroxyl group, or dialkylene alcohols with at least one hydroxyl group. Preferably the alcohol of the present invention is chosen from linear C C₄ hydroxyalkyls, C C₄ dialkylene alcohols, or a mixture thereof.

In one embodiment, the composition of the present invention comprises from 0.1 % to 20% by weight, relative to the total weight of the composition, of at least one C C₄ alcohol with at least one hydroxyl group, linear or branched, saturated or unsaturated. In one embodiment, said C C₄ alcohol is selected from the group consisting of ethanols, ethylene glycols, dialkylene glycols, or a mixture thereof; preferably the C C₄ alcohol is ethanol, dipropylene glycol, and any mixture thereof.

In particular, the composition of the present invention comprises from 0.5% to 15% by weight, more preferably from 1 % to 10% by weight of the C C₄ alcohol, relative to the total weight of the composition.

In one embodiment, the composition of the present invention comprises at least one glycol, preferably selected from the group consisting of glycol alkylene, for example C _i2 alkylene glycol, a dialkylene glycol, for example C C₅ dialkylene glycol, a silicone glycol coplolymer, for example a polyethylene glycol dimethicone, and any mixture thereof. In particular, the composition of the present invention comprises from 1 % to 40% of glycol by weight, relative to the total weight of the composition.

The continuous aqueous phase may also comprise water-miscible organic solvents (at room temperature of 20-25°C), for instance polyols especially containing from 2 to 20 carbon atoms, preferably containing from 2 to 10 carbon atoms and preferentially containing from 2 to 6 carbon atoms, such as glycerol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, dipropylene glycol or diethylene glycol; glycol ethers (especially containing from 3 to 16 carbon atoms) such as mono-, di- or tripropylene glycol (C C₄)alkyl ethers, mono-, di- or triethylene glycol (C C₄)alkyl ethers, and mixtures thereof.

The aqueous phase may also comprise stabilizers, for example sodium chloride, magnesium dichloride or magnesium sulfate. In particular, the composition of the invention is an aqueous composition, preferably a gel, or hydrogel.

Additives

The compositions in accordance with the present invention may also comprise conventional cosmetic adjuvants chosen in particular from organic solvents, ionic or nonionic thickeners, softeners, humectants, opacifiers, stabilizers, emollients, silicones, antifoams, fragrances, preserving agents, anionic, cationic, nonionic, zwitterionic or amphoteric surfactants, active agents, fillers, polymers, propellants, acidifying or basifying agents or any other ingredient commonly used in the cosmetic and/or dermatological field. Among the organic solvents that may be mentioned are alcohols and in particular the short chain C₂-C₈ polyols, for instance glycerol, diols for instance caprylyl glycol, 1 ,2-pentanediol, propanediol, butanediol, glycols and glycol ethers, for instance ethylene glycol, propylene glycol, butylene glycol, dipropylene glycol or diethylene glycol.

Thickeners, in additional to the hydrophilic gelling agents disclosed above, that may be mentioned include the cellulose derivatives such as hydroxyethylcellulose; polysaccharides and especially gums such as xanthan gum; water-soluble or water-dispersible silicone derivatives, for instance acrylic silicones, polyether silicones and cationic silicones, and mixtures thereof.

Among the acidifying agents, examples that may be mentioned include mineral or organic acids, for instance hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids, for instance acetic acid, tartaric acid, citric acid or lactic acid, and sulfonic acids.

Among the basifying agents, examples that may be mentioned include aqueous ammonia, alkali metal carbonates, alkanolamines such as monoethanolamine, diethanolamine and triethanolamine, and also derivatives thereof, sodium hydroxide and potassium hydroxide.

Preferably, the cosmetic composition comprises one or more basifying agents chosen from alkanolamines, in particular triethanolamine, and sodium hydroxide.

In the case of a hydrogel, the pH of the composition in accordance with the invention is generally between 3 and 12 approximately, preferably between 5 and 1 1 approximately and even more particularly from 6.5 to 8.5. Among the active agents for caring for keratin materials such as the skin, the lips, the scalp, the hair, the eyelashes or the nails, examples that may be mentioned include:

- vitamins and derivatives or precursors thereof, alone or as mixtures;

- antioxidants; - free-radical scavengers;

- antipollution agents;

- self-tanning agents;

- antiglycation agents;

- calmatives; - deodorants;

- essential oils;

- NO-synthase inhibitors;

- agents for stimulating the synthesis of dermal or epidermal macromolecules and/or which prevent their decomposition; - agents for stimulating the proliferation of fibroblasts;

- agents for stimulating the proliferation of keratinocytes;

- muscle relaxants;

- refreshing agents;

- tensioning agents; - mattifying agents;

- depigmenting agents;

- propigmenting agents;

- keratolytic agents; - desquamating agents;

- moisturizers;

- antiinflammatory agents;

- antimicrobial agents; - slimming agents;

- agents acting on the energy metabolism of cells;

- insect repellents;

- substance P or CGRP antagonists;

- hair-loss counteractants; - antiwrinkle agents;

- antiageing agents.

A person skilled in the art will select the said active principle(s) according to the effect desired on the skin, the hair, the eyelashes, the eyebrows or the nails.

Needless to say, a person skilled in the art will take care to select the abovementioned optional compound(s) and/or the amounts thereof such that the advantageous properties intrinsically associated with the compositions in accordance with the invention are not, or are not substantially, adversely affected by the envisaged addition(s).

A cosmetic composition according to the invention may also comprise any additive usually used in the field under consideration, chosen, for example, from fillers or viscosity increasing agents, gelling agents, gums, resins, thickening agents, structuring agents such as waxes, dispersants, antioxidants, preserving agents, fragrances, neutralizers, antiseptics, additional UV-screening agents, cosmetic active agents, such as vitamins, moisturizers, emollients or collagen-protecting agents, and mixtures thereof.

Suitable fillers and/or viscosity increasing agents include silicate clays such as, for example, silicate clays containing at least one cation which may be chosen from calcium, magnesium, aluminium, sodium, potassium, and lithium cations, and mixtures thereof. Non-limiting examples of such products include smectite clays such as montmorillonites, hectorites, bentonites, beidellites, saponites, vermiculites, stevensite, and chlorites. Preferred examples of silicate clays which may be used in the present invention are chosen from lithium magnesium silicate, aluminum calcium sodium silicate, calcium magnesium silicate, sodium magnesium silicate, calcium aluminum borosilicate, magnesium aluminum silicate, sodium potassium aluminum silicate, and sodium silver aluminum silicate.

If present, the fillers and/or viscosity increasing agents are present in an amount ranging from 0.05% to 10% by weight, preferably from 0.1 % to 5% by weight, relative to the total weight of the composition.

In the specific embodiment wherein the composition is oil-free, if one or more oils are present as additives their total amount should satisfy the invention's requirement (i.e. being less than 0.2%, preferably less than 0.1 %, more preferably less than 0.05%, in the composition). Advantageously, the composition may be in the form of a gel, preferably an aqueous gel.

The term "aqueous gel" means a composition containing a continuous aqueous phase containing a viscoelastic mass formed from colloidal suspensions. The viscosity of a gel according to the invention is measured at 25° C. using a ProRheo R180 machine (rotor 2) from the company Prorheo, and its value is generally 20 UD to 80 UD (Deviation Units) with the rotor 2.

Preferably, the viscosity of the gel according to the invention is inferior or equal to 80 UD (rotor 2) by ProRheo at 25°C. The viscosity is generally measured at 25°C with a viscosimeter PRORHEO R 180 with rotor 2 adapted to the viscosity of the product to be tested (rotor is chosen for having a measure between 20 and 80 for UD Unit Deviation), the measure being made after 10mn rotating the rotor inside the composition, with a shear rate from 200s^"1. The UD values may then be converted in Poises (1 Poise= 0.1 Pa. s) with a correspondence table. More preferably, according to one embodiment, the viscosity of the composition of present invention is 21 UD by ProRheo at 25°C with the rotor 2.

The gels in accordance with the present invention comprise an aqueous phase generally in a proportion of greater than or equal to 70% by weight, preferably greater than or equal to 80% by weight and more particularly greater than or equal to 90% by weight relative to the total weight of the gel. More surprisingly, a composition according to the present invention may be in the form of a gel that becomes fluid when sprayed. The term "fluid" means a composition that is capable of flowing under its own weight, as opposed to compositions that are termed solid.

According to a preferred embodiment, the viscosity of the composition of the present invention is decreased from a gel to a fluid, after being sprayed, for example the viscosity of the present invention after spraying is at least 100 time, preferably at least 500 times, and more preferably at least 1000 times, less than before spraying.

Typically the viscosity of the gel before spraying is of 10 to 200 Pa s, for example from 20 to 100 Pa s. Typically the viscosity of the fluid after spraying is of 0.001 to 1 Pa s, for example from 0.005 to 0.1 Pa s. The rheology was measured using the Rheometer MCR301 from the company Anton Paar, with cone/plate measuring system, with the cone being CP50. The measurement was made by following steps: measuring the viscosity n₀ of the gel at 0-100 seconds using shear rate of 0.01 s^"1 ; measuring the viscosity of the fluid composition at 101-200 seconds using shear rate of 10000 s^"1.

The composition of the present invention is sprayable or, in other words, capable of being dispensed in the form of fine particles.

This means that the composition may be dispensed using a dispenser having a spray nozzle.

Accordingly, the present invention also relates to a device comprising a container and a spray nozzle, wherein said container contains the composition of the invention. In one preferred embodiment the composition is translucent, or even transparent.

More specifically, the composition of the invention is a transparent gel.

The compositions of the invention may be applied with any device having spraying means, including suitable aerosol or non-aerosol spray devices. Non-aerosol spray devices are preferred, and include for example, spray pumps such as the following: Eurogel Spray Pump (available from Seqquist Perfect, Cary III.), P1 spray pump (available from Precision, Ajax, Canada), Calmar Spray Pumps, Calmar, Inc., City of Industry, Calif, and and Mitani Mist Pumps (available from MITANI VALVE CO., LTD). The composition of the present invention is transparent, or translucent, more preferably transparent.

The term "translucent" means which allows light to pass through without making it possible to distinguish alphanumeric characters using 5 mm thick samples. The term "transparent" means which allows light to pass through, and makes it possible to distinguish alphanumeric characters using 5 mm thick samples.

Method and use

The composition of the present invention can be used for a non-theraputic process, such as a cosmetic process or method, for making up/caring for the keratin materials, such as the skin, in particular the face and the lips, by being applied to the skin, especially the face and the lips.

The present invention also relates to a use of the composition according to the present invention, as it is or in cosmetic product for making up/caring for/cleansing/make up removing products for the skin, especially for the face and the lips.

The invention relates to the use of at least one gellan gum for improving the sunblocking or sun screening effect of a UV-screening composition.

The present invention relates to a non-therapeutic cosmetic process for caring for and/or making up a keratin material, comprising the application, to the surface of the said keratin material, of at least one composition of the invention.

The present invention relates to a non -therapeutic cosmetic process for limiting the darkening of the skin and/or improving the colour and/or uniformity of the complexion, comprising the application, to the surface of the skin, of at least one composition of the invention.

The present invention relates to a non -therapeutic cosmetic process for preventing and/or treating the signs of ageing of a keratin material, comprising the application, to the surface of the keratin material, of at least one composition as defined in any one of the invention. The examples that follow are aimed at illustrating the compositions and processes according to this invention, but are not in any way a limitation of the scope of the invention.

EXAMPLES

Example 1 - formulation Hydrophilic UV-screening agents were added in water. Then gellan gum was introduced as a UV booster. The final formula was transparent and sprayable.

Table 1

Example 2: Example of formulation

The formulation according to table 2 was prepared.

Two hydrophilic gelling agents (AMMONIUM POLYACRYLOYLDIMETHYL TAURATE and GELLAN GUM) were dispersed in water at 75 °C with a dispenser. They were then added to the water phase which contained other water soluble functional components such as preservatives (PHENOXYETHANOL and CAPRYLYL GLYCOL), alcohol, glycerin, and other glycols

(DIPROPYLENE GLYCOL, PROPYLENE GLYCOL), under 75 °C. Then UV-screening agents were neutralized by TRIETHANOLAMINE to pH around 7.0 in water under 25 °C. Then the neutralized UV-screening agents were introduced to the water phase.

All the amounts in the table below are by active matters and the quantity are expressed in weight percent relative to the total weight of the composition.

Table 2

Comparative Comparative Comparative Invention Invention

INCI US n°1 n°2 n°3 n°1 n°2

(%w/w) (%w/w) (%w/w) (%w/w) (%w/w)

TRIETHANOLAMINE QS pH 7 QS pH 7 QS pH 7 QS pH 7 QS pH 7

AMMONIUM POLYACRYLOYLDI 0 0 0 0.05 0.1 METHYL TAURATE

GELLAN GUM 0 0 0 0.3 0.4

STEARETH-

100/PEG-136/HDI 0 0 0.4 0 0

COPOLYMER

BIS-METHOXY PEG- 13 PEG-438/PPG-

0 0.6 0 0 0 1 10 SMDI

COPOLYMER

PHENOXYETHANOL 0.5 0.5 0.5 0.5 0.5

BIS-PEG-18

METHYL ETHER 2 2 2 1 1 DIMETHYL SILANE HEXYLENE GLYCOL 0 0 0 1 1

DIPROPYLENE

6 6 6 10 10 GLYCOL

ALCOHOL 6 6 6 6 6

WATER QS QS QS QS QS

GLYCERIN 3 3 3 3 3

PROPYLENE

3 3 3 6 6

GLYCOL

CAPRYLYL GLYCOL 0.1 0.1 0.1 0.1 0.1

PHENYLBENZIMIDA ZOLE SULFONIC 4 4 4 4 4

ACID

TEREPHTHALYLIDE NE DICAMPHOR 5 5 5 3 3

SULFONIC ACID

In vivo SPF value 5.0 ± 1 .4 6.4 ± 1 .3 4.7 ± 0.5 9.2 ± 0.8 9.7 ± 1.8

In vivo PPD value 2.4 ± 0.4 2.5 ± 0.6 2.2 ± 0.2 2.8 ± 0.7 5.2 ± 1.0

Comparative n°1 does not contain any hydrophilic gelling agents, comparative n°2 and 3 contain only one hydrophilic gelling agent, different from gellan gum.

The composition of the invention (n°1 & 2) contain less UV filters, but show higher SPF and PPD value indicating better UV protection, comparing to the comparative n°1 , 2 or 3. Such compositions of the invention (n°1 & 2) are transparent sprayable sunscreen compositions.

Such composition of the invention (n°1 & 2) present a good feeling on the skin.

Before spraying, the composition n°1 of the invention presents a viscosity of about 40Pa s (as measured by Rheometer MCR301 from the company Anton Paar, with cone/plate measuring system, with the cone being CP50 at 0-100 seconds using a shear rate of 0.01 s^"1). After spraying, the composition n°1 of the invention presents a viscosity of about 0.02Pa s (as measured by Rheometer MCR301 from the company Anton Paar, with cone/plate measuring system, with the cone being CP50 at 101 -200 seconds using a shear rate of 10000 s^"1).

Before spraying, the composition n°2 of the invention presents a viscosity of about 74Pa s (as measured by Rheometer MCR301 from the company Anton Paar, with cone/plate measuring system, with the cone being CP50 at 0-100 seconds using a shear rate of 0.01 s^"1). After spraying, the composition n°2 of the invention presents a viscosity of about 0.01 Pa s (as measured by Rheometer MCR301 from the company Anton Paar, with cone/plate measuring system, with the cone being CP50 at 101 -200 seconds using a shear rate of 10000 s^"1). In addition users feel a mist and light texture of the composition of the invention when applied onto the skin, according to their own appreciation.

Claims

What is claimed is:

1. A composition, notably a sunscreen composition, comprising: a) at least two hydrophilic gelling agent, wherein at least one is a gellan gum or a derivative thereof, and b) one or more UV-screening agents.

2. The composition according to claim 1 , wherein said composition comprises: (i) from 0.005% to 10%, preferably from 0.05% to 5%, more preferably from 0.1 % to 3%, of gellan gum or a derivative thereof; (ii) from 0.005% to 5%, preferably from 0.01 % to 2%, more preferably from 0.05% to 1 %, of hydrophilic gelling agent, in addition to the gellan gum or its derivatives, preferably a taurate copolymer; and (iii) from 3% to 40% preferably from 5% to 30%, more preferably from 7 to 20% of one or more UV-screening agents, wherein % are expressed by weight relative to the total weight of the composition.

3. The composition according to claim 2, wherein said taurate copolymer is at least partially formed from acryloyl dimethyltaurate as a monomer unit.

4. The composition according to claim 3, wherein the acryloyl dimethyltaurate is copolymerized with a monomer selected from the group consisting of styrene, acrylic acid, methacrylic acid, vinyl chloride, vinyl acetate, vinyl pyrrolidone, isoprene, vinyl alcohol, vinyl methylether, chloro-styrene, maleic acid, acrylamide, methacrylamide and mixtures thereof. polyacrylamides and polymers and copolymers of 2-acrylamido-2-methylpropanesulphonic acid which are optionally crosslinked and/or neutralized.

5. The composition according to any one of claims 1 to 4, wherein said composition does not comprise hydrophobic UV-screening agents.

6. The composition according to any one of the claims 1 to 5, wherein said composition comprises from 3% to 40% by weight, more preferably from 5% to 30% by weight, more preferably from 7% to 20% by weight, relative to the total weight of the composition, of hydrophilic UV-screening agents.

7. The composition according to any one of the claims 1 to 6, wherein said hydrophilic UV- screening agent is selected from the group consisting of sulfonic acid based hydrophilic UV- screening agents.

8. The composition according to any one of claims 1 to 7 comprises from 0.1 % to 20% by weight, relative to the total weight of the composition, of at least one C C₄ alcohol with at least one hydroxyl group, linear or branched, saturated or unsaturated.

9. The composition according to any one of claims 1 to 8, wherein the C C₄ alcohol is selected from the group consisting of ethanols, ethylene glycols, dialkylene glycols, or a mixture thereof; preferably the C C₄ alcohol is ethanol, dipropylene glycol, and any mixture thereof.

10. The composition according to any one of the claims 1 to 9, wherein said composition comprises at least one glycol, preferably selected from the group consisting of glycol alkylene, for example C C₁₂ alkylene glycol, a dialkylene glycol, for example C C ₅ dialkylene glycol, a silicone glycol coplolymer, for example a polyethylene glycol dimethicone, and any mixture thereof.

1 1 . The composition according to any one of the claims 1 to 10, wherein said composition comprises from 1 % to 40% of glycol by weight, relative to the total weight of the composition.

12. The composition according to any one of the preceding claims 1 to 1 1 , wherein said composition is an aqueous composition, preferably an aqueous gel.

13. The composition according to any one of the preceding claims 1 to 12, wherein said composition is a sprayable composition.

14. The composition according to any one of the preceding claims 1 to 13, wherein said composition is transparent or translucent gel, preferably transparent gel.

15. Use of a gellan gum or a derivative thereof for improving the sunblocking or sunscreening effect of a UV-screening composition.

16. A non-therapeutic cosmetic process for caring for and/or making up a keratin material, comprising the application, to the surface of the said keratin material, of at least one composition according to any one of the previous claims 1 to 14.