Cosmetic composition comprising hydrophilic or water-dispersible organic UVA filters

Abstract

Cosmetic composition comprising hydrophilic or water-dispersible organic UVA filters. The present invention relates to a composition, particularly a cosmetic one, comprising, in a physiologically acceptable aqueous medium: at least one hydrophilic or water-dispersible organic filter capable of absorbing UV radiation from 320 to 400 nm (UVA); and at least one specific polysaccharide. Figure for the abstract: none

Description

Title of the invention: Cosmetic composition comprising hydrophilic or hydrodispersible organic UVA filters

[0001] The present invention relates to new compositions, particularly cosmetic ones, comprising, in a physiologically acceptable aqueous medium, at least one hydrophilic or hydrodispersible organic filter capable of absorbing UV from 320 to 400 nm (UVA) and at least one specific polysaccharide.

[0002] It is known that radiation with wavelengths between 280 nm and 400 nm allows the tanning of the human epidermis.

[0003] It is also known that UVA rays with wavelengths between 320 and 400 nm penetrate the skin more deeply than UVB rays (radiation with wavelengths between 280 and 320 nm). Furthermore, UVB rays can cause sunburn. UVA rays cause immediate and persistent tanning of the skin. Daily exposure to UVA rays, even for short periods, under normal conditions can damage collagen and elastin fibers, resulting in changes to the skin's microrelief and uneven pigmentation (spots or uneven skin tone). In particular, UVA exposure is likely to cause detrimental changes in the biomechanical properties of the epidermis, leading to the appearance of wrinkles and premature skin aging.

[0004] To date, a wide variety of photoprotective compositions are already known to protect keratinous materials, and more specifically the skin, against the harmful effects induced by UVA and / or UVB radiation. Essentially, they contain a combination of several organic or inorganic UV filters, delivered in an oily and / or aqueous phase as an active anti-UV agent, and are generally offered in a galenic form such as an emulsion, gel, or oil.

[0005] It is also known that high filter ratios are needed to achieve high levels of filtering efficiency.

[0006] However, high levels of UV filters do not lend themselves to the easy development of compositions with a stabilized and pleasant texture.

[0007] Thus, formulations with high filtering power generally present uncomfortable or even unpleasant sensory aspects that mask the freshness and comfort of the formulas. In particular, the weak point of high-SPF photoprotective formulations is often a significant greasy and / or sticky feeling, resulting in a lack of lightness in the textures obtained, as well as a white appearance upon application, making it noticeable on the skin. Indeed, most formulations High-SPF sunscreens often contain high levels of lipophilic UV filters, which leads to an unpleasant greasy feeling upon application. Therefore, hydrophilic UV filters are preferable.

[0008] However, the introduction of high concentrations of hydrophilic or water-dispersible UV filters generally causes destabilization problems. This is because hydrophilic or water-dispersible UV filters behave like electrolytes in formulations; therefore, it is not easy to gel the aqueous phase of compositions containing these filters.

[0009] To overcome the aforementioned undesirable effects, and in particular to obtain a cooling effect upon application and an invisible effect on the skin, aqueous formulations have already been considered. These aqueous compositions contain hydrophilic (or water-soluble) UV filters, but they are generally sticky, which limits their use.

[0010] Consequently, there is a need for a photoprotective composition comprising an aqueous phase with a high level of UV protection and perfectly stable and homogeneous, i.e. not subject to demixing phenomena.

[0011] There is still a need for a photoprotective composition comprising an aqueous phase with a high level of UV protection and exhibiting good sensory properties (not greasy on application in particular), in particular one whose stickiness is significantly reduced.

[0012] There is still a need for a photoprotective composition comprising an aqueous phase with a high level of UV protection and which is also transparent, particularly after application to the skin.

[0013] There also remains a need for a photoprotective composition comprising an aqueous phase which has a gelled texture, more suitable for spreading on the skin.

[0014] The present invention aims to provide new cosmetic compositions that address these problems.

[0015] In particular, the present invention aims to provide new compositions, especially cosmetic ones, comprising an aqueous phase containing hydrophilic or water-dispersible organic UVA filters, which are stable and homogeneous, which have good sensory properties upon application, in particular with a reduced greasy feel, and which are non-sticky or only slightly sticky. Furthermore, these compositions have a gel-like texture, i.e., they are in gel form.

[0016] The present invention thus relates to a composition, in particular a cosmetic one, comprising, in a physiologically acceptable aqueous medium: - at least one hydrophilic or water-dispersible organic filter capable of absorbing UV radiation from 320 to 400 nm (UVA); and - at least one polysaccharide derived from red algae and in which the number of sulfate(s) per monomer is less than or equal to 2.

[0017] By "physiologically acceptable medium" is meant a medium compatible with keratinous materials. By "keratinous materials" is meant the skin and / or lips and / or hair.

[0018] The composition according to the invention exhibits good stability. This stability can be evaluated macroscopically and / or microscopically after storage for one week, one month, or two months at room temperature (25°C), 4°C, 45°C, or 55°C. A stable composition generally retains its pleasantness and sensory signature upon application over time. More specifically, the stability of a composition can be assessed qualitatively, for example, by the absence of phase separation or crystal formation, or quantitatively by monitoring the evolution of parameters such as viscosity or pH.

[0019] Preferably, the composition of the present invention is transparent or translucent. According to some preferred embodiments, the composition according to the invention is a transparent composition.

[0020] For the purposes of this invention, a transparent or translucent composition is defined as a composition having a turbidity value of less than 800 NTU, preferably less than 500 NTU, preferably less than 200 NTU, preferably less than 150 NTU, and preferably less than 100 NTU. Preferably, the turbidity of the compositions is at least equal to 1 NTU.

[0021] NTUs (nephelometric turbidity units) are the units of measurement for the turbidity of a composition. Turbidity measurement is carried out, for example, with a Hach Company model 2100P turbidimeter, the tubes used for the measurement being referenced AR397A cat 24347-06. The measurements are carried out at room temperature (from 20°C to 25°C).

[0022] Preferably, the composition is transparent and has a turbidity value between 1 and 200 NTU, preferably between 1 and 150 NTU, preferably less than 100 NTU.

[0023] Preferably, the composition is transparent after application to the skin, i.e. there is no white mark after spreading the composition on the skin.

[0024] The present invention also relates to a non-therapeutic cosmetic treatment method for keratinous materials, preferably of the skin, comprising the application to said keratinous materials of a composition according to the invention.

[0025] Hydrophilic or hydrodispersible organic filters capable of absorbing UV radiation from 320 to 400 nm (UVA)

[0026] The composition according to the invention comprises at least one hydrophilic or hydrodispersible organic filter capable of absorbing UVA.

[0027] Preferably, the composition according to the invention comprises at least one hydrophilic (or water-soluble) organic filter capable of absorbing UVA.

[0028] By “hydrophilic organic filter” or “water-soluble organic filter”, we mean any organic filter capable of being totally dissolved in molecular form in a liquid aqueous phase.

[0029] The term “hydrodispersible organic filter” means any organic filter capable of forming, in a liquid aqueous phase, a homogeneous suspension of particles with a volume average size of less than 100 microns. The volume average size is determined by laser diffraction particle size analysis.

[0030] Among the water-dispersible organic filters capable of absorbing UVA, we can mention:

[0031] Methylene bis-(hydroxyphenyl benzotriazole) compounds:

[0032] Methylene bis-Benzotriazolyl Tetramethylbutylphenol in the form of an aqueous dispersion of micronized particles having a volume average particle size ranging from 0.01 to 5 pm, and more preferably from 0.01 to 2 pm, and more particularly from 0.020 to 2 pm, with at least one alkylpolyglycoside surfactant of the structure CnH2n+iO(C6HiO5)xH in which n is an integer from 8 to 16 and x is the average degree of polymerization of the unit (C6HiO5) and ranges from 1.4 to 1.6 such as the aqueous dispersions described in patent GB-A-2 303 549, in particular the product sold under the trade name "TINOSORB® M" by BASF, or in the form of an aqueous dispersion of micronized particles having a volume average particle size ranging from 0.02 to 2 pm, and more preferably from 0.01 to 1.5 pm, and more particularly from 0.02 to 1 pm,in the presence of at least one mono-(C8-C2o)alkyl-ester of polyglycerol having a degree of glycerol polymerization of at least 5 such as the aqueous dispersions described in application WO2009 / 063392, in particular the product marketed under the name Tinosorb WPGL by BASF, Triazine Compounds#: ,

[0033] - 3,3'-(l,4-Phenylene)bis(5,6-diphenyl-l,2,4-triazine), INCI name Phenylene Bis-Diphenyl triazine, notably marketed under the name Triasorb by Pierre Fabre;

[0034] - Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine in its water-dispersible form with the INCI name Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (and) Acrylates / C12-22 Alkyl Methacrylate Copolymer, under the trade name TINOSORB® S LiteAqua by BASF, - symmetric triazine filters substituted with naphthalenyl groups or polyphenyl groups used in micronized form (average particle size from 0.02 to 3 µm) which can be obtained, for example, by the micronization process described in applications GB-A-2 303 549 and EP-A-893119, and in particular in aqueous dispersion form, notably 2,4,6-tris(bi-phenyl)-triazine and 2,4,6-tris(ter-phenyl)-triazine marketed under the name TINOSORB® A2B by BASF and which is covered in patent applications WO06 / 035000, WO06 / 034982, WO06 / 034991, WO06 / 035007, WO2006 / 034992, WO2006 / 034985.

[0035] Among the hydrophilic (or water-soluble) organic filters capable of absorbing UVA, the following may be mentioned: - Terephthalylidene Dicamphre Sulfonic Acid manufactured under the name "MEXORYL SX" by CHIMEX; - bis-benzoazolyl derivatives as described in EP 669 323, and US 2,463,264 and more particularly the compound Disodium Phenyl Dibenzimidazole Tetrasulfonate sold under the trade name "NEO HELIOPAN AP" by Haarmann and REIMER.

[0036] The water-soluble organic filter may also be a mixed water-soluble filter capable of absorbing UVA and UVB. Preferably, such a mixed filter is a benzophenone derivative comprising at least one sulfonic acid radical, such as, in particular:

[0037] Benzophenone-4 sold under the trade name "UVINUL MS40" by BASF,

[0038] Benzophenone-5, and

[0039] Benzophenone-9.

[0040] Preferably, the water-soluble organic filter capable of absorbing UVA is chosen from Terephthalylidene Dicamphre Sulfonic Acid, bis-benzoazolyl derivatives, in particular Disodium Phenyl Dibenzimidazole Tetrasulfonate, Benzophenone-4, Benzophenone-5, Benzophenone-9 and mixtures thereof.

[0041] Preferably, the water-soluble organic filter capable of absorbing UVA is chosen from Terephthalylidene Dicamphre Sulfonic Acid, Disodium Phenyl Dibenzimidazole Tetrasulfonate, Benzophenone-4, Benzophenone-5, Benzophenone-9 and mixtures thereof.

[0042] Preferably, the water-soluble organic filter capable of absorbing UVA is chosen from Terephthalylidene Dicamphre Sulfonic Acid, bis-benzoazolyl derivatives, in particular Disodium Phenyl Dibenzimidazole Tetrasulfonate, and mixtures thereof.

[0043] Preferably, the water-soluble organic filter capable of absorbing UVA is chosen from Terephthalylidene Dicamphre Sulfonic Acid, Disodium Phenyl Dibenzimidazole Tetrasulfonate, and mixtures thereof.

[0044] According to a first preferred embodiment, the water-soluble organic filter capable of absorbing UVA is Terephthalylidene Dicamphre Sulfonic Acid (also called ecamsule).

[0045] According to a second preferred embodiment, the water-soluble organic filter capable of absorbing UVA is Disodium Phenyl Dibenzimidazole Tetrasulfonate (also called bisdisulizole disodium).

[0046] Preferably, the hydrophilic or water-dispersible organic filter(s) capable of absorbing UVA is / are present in an amount of active material between 0.1% and 20% by weight, preferably between 0.1% and 15% by weight relative to the total weight of the composition, preferably between 1% and 10% by weight. Polysaccharide

[0047] The composition according to the invention comprises at least one polysaccharide derived from red algae in which the number of sulfate(s) per monomer is less than or equal to 2.

[0048] The polysaccharide according to the invention is derived from red algae and has a number of sulfate(s) less than or equal to 2. By "sulfate", we mean the -O-SO3 group. By "number of sulfate(s) less than or equal to 2", we mean that a monomer of polysaccharide derived from red algae according to the invention comprises 0, 1 or 2 sulfate(s).

[0049] Thus, the polysaccharide derived from red algae according to the invention may contain no sulfate. Preferably, the polysaccharide derived from red algae does not contain sulfate. Such a polysaccharide is, in particular, agar.

[0050] Agar is a polysaccharide thickening agent of natural origin, obtained from red algae belonging to the families Gelidaceae (Gelidium and Pterocladid) and Gracilariaceae.

[0051] To prepare agar, in some embodiments, the seaweed is boiled and the broth is filtered. The resulting filtrate is cooled, causing it to gel. The gel is then at least partially dehydrated by pressing or freezing / thawing cycles. The at least partially dehydrated gel is dried and then ground into a powder.

[0052] Agar is a complex mixture of polysaccharides in which 3-1,3 and α-1,4 type linkages alternate. Agar primarily comprises a mixture of agarose and agaropectin. Agaropectin is a gelling compound responsible for the gelling of agar.

[0053] Agar consists mainly of agarose. Agarose is a polysaccharide formed by a chain of D-galactopyranose units linked by a [3-1,3] bond alternating with 3,6-anhydro-L-galactopyranose linked by an α-1,4 bond.

[0054] Agarose is a compound with the following formula (I):

[0056] in which n is an integer that defines the degree of polymerization of the agar. The molecular weight of a monomer unit (when n=l) of formula (I) is 306.27 g / mol.

[0057] However, molecular weight is not a relevant technical characteristic for defining agar in general, and the agar used according to the invention in particular.

[0058] Agar is a product readily available on the market. According to the invention, one can use, for example, the agars marketed by Bio-Rad (e.g. reference 166-0600EDU) or by Sigma-Aldrich (e.g. reference L7025).

[0059] The polysaccharide derived from red algae according to the invention may also comprise 1 or 2 sulfate(s) per polysaccharide monomer.

[0060] Preferably, the polysaccharide derived from red algae contains 1 or 2 sulfate(s) per polysaccharide monomer. Such polysaccharides include, in particular, certain carrageenans, i.e., kappa carrageenan, iota carrageenan, or mixtures thereof.

[0061] Carrageenans are polysaccharides that constitute the cell walls of various red algae (Rhodophyceae) belonging to the families Gigartinaceae, Hypneaceae, Furcellariaceae, and Polyideaceae. They consist of long galactan chains and are anionic polyelectrolytes. Their molecular mass can exceed 10⁶. These linear polymers, formed by disaccharide motifs, are composed of two D-galactopyranoses linked alternately by α- and γ- bonds. They are sulfated polysaccharides, and the αD-galactopyranosyl residues can be in the 3',6'-anhydro form.

[0062] Initially, carrageenans were subdivided into two families according to their solubility in potassium chloride (KCl). The fractions soluble in KCl were designated by the prefix "Kappa", while the term "Lambda" was reserved for the insoluble ones. Later, the classifications were based on the number and position of sulfate groups as well as the presence of 3',6'-anhydro bridges on the [3-D-galactopyranosyl] residues. This resulted in the four major families: K, X, [3, and co.

[0063] The different types of carrageenans do not exist in their pure form, but as hybrids. Thus, in nature, K- and L-carrageenans occur in a kappa-iota hybrid form, but one of the two structures may predominate over the other. The state The kl hybrid of a structure can be elucidated using specific enzymes, which allow the content of one of the two forms to be enriched or decreased.

[0064] Kappa (K)-carrageenans have the following structure (number of sulfates per monomer equal to 1):

[0065] [Chem.2]

[0066] Kappa (K)-carrageenans are therefore polysaccharides according to the invention, i.e. derived from red algae and whose sulfate number is equal to 1.

[0067] Iota (L)-carrageenans have the following structure (number of sulfates per monomer equal to 2):

[0068] [Chem.3]

[0069] Iota (L)-carrageenans are therefore polysaccharides according to the invention, i.e. derived from red algae and whose number of sulfates is equal to 2.

[0070] Conversely, lambda (X)-carrageenans have the following structure (number of sulfates per monomer equal to 3):

[0071] [Chem.4]

[0072] Lambda (X)-carrageenans are therefore polysaccharides outside the invention or comparative, i.e. whose number of sulfates is equal to 3.

[0073] Preferably, the polysaccharide is chosen from agar, kappa carrageenans, iota carrageenans and mixtures thereof.

[0074] The polysaccharide derived from red algae and having a sulfate number less than or equal to 2 according to the invention may be chemically modified or not. Preferably, the polysaccharide is not chemically modified.

[0075] Preferably, the concentration of polysaccharides used in the compositions according to the present invention shall, in active matter, be from 0.01 to 20%, preferably from 0.01 to 10%, preferably from 0.01 to 5%, preferably from 0.01 to 3%, preferably from 0.1 to 3%, preferably from 0.1 to 1% and preferably from 0.3 to 1% by weight relative to the total weight of the composition.

[0076] Preferably, the polysaccharide according to the invention is agar. Indeed, with this polysaccharide, as demonstrated by example, on the one hand the composition according to the invention has a gelled texture with a very small amount of agar, and on the other hand, the reduction in the stickiness of the composition is all the more marked.

[0077] Preferably, the total concentration of polysaccharide(s) used in the compositions according to the present invention ranges from 0.01 to 20%, preferably from 0.1 to 15%, preferably from 0.2 to 10%, preferably from 0.3 to 8%, and even more preferably from 0.3 to 5% by weight relative to the total weight of the composition. Aqueous phase

[0078] The composition according to the invention comprises a physiologically acceptable aqueous medium.

[0079] Preferably, the composition according to the invention comprises an aqueous medium comprising at least water.

[0080] The aqueous medium may comprise at least one other organic solvent soluble in water at 25°C, chosen for example from:

[0081] - C1-C4 monoalkanols. The term "C1-C4 monoalkanol" means any A saturated, linear or branched alkane compound having from 1 to 4 carbon atoms and a single hydroxyl (OH) group. The Ci-C4 monoalkanol(s) present in the compositions of the invention may be selected from methanol, ethanol, propanol, isopropanol, butanol, or mixtures thereof. Ethanol is particularly preferred;

[0082] - polyols having in particular from 2 to 20 carbon atoms, preferably from 2 to 6 carbon atoms, such as glycerol, diglycerol, propylene glycol, isoprene glycol, dipropylene glycol, butylene glycol, hexylene glycol, 1,2-propanediol, 1,3-propanediol, pentylene glycol, caprylyl glycol, simple sugars, water-soluble polyalkylene glycols; and

[0083] - their mixtures.

[0084] Monoalkanols are generally present at concentrations ranging from 0.2 to 90% by weight, more preferably from 0.5 to 50%, and preferably from 1% to 10% by weight relative to the total weight of the composition.

[0085] Preferably, the composition according to the invention comprises at least one polyol, in particular as described above. The presence of at least one polyol notably improves cosmetic properties, such as smoothness upon application, and reduces stickiness. Preferably, it comprises at least 0.5% by weight of polyol(s) relative to the total weight of the composition, preferably at least 1% by weight of polyol(s) relative to the total weight of the composition, preferably at least 3% by weight of polyol(s) relative to the total weight of the composition, preferably at least 5% by weight of polyol(s) relative to the total weight of the composition, preferably from 10% to 50% by weight, preferably from 15% to 40% by weight, preferably from 18% to 35%, and even more preferably from 20% to 30% by weight.

[0086] Preferably, the composition according to the invention comprises a polyol, preferably glycerin, butylene glycol, propylene glycol, 1,2-propanediol, caprylyl glycol, pentylene glycol or dipropylene glycol and mixtures thereof.

[0087] The composition preferably comprises at least 5% by weight of water relative to the total weight of the composition, preferably 10 to 99% by weight of water relative to the total weight of the composition, preferably 20 to 90% by weight, preferably 30 to 80%, preferably 40 to 70% by weight. Additional UV filters

[0088] The composition according to the invention may further comprise at least one additional UV filter. Of course, said additional filter is different from the hydrophilic or water-dispersible organic filter capable of absorbing UVA.

[0089] The additional UV filter(s) can be chosen from among lipophilic organic UV filters, hydrophilic or hydrodispersible organic UVB filters and inorganic UV filters.

[0090] Lipophilic organic UV filters

[0091] By "lipophilic organic filter" is meant any cosmetic or dermatological organic compound that filters UV radiation and is capable of being completely dissolved in molecular form in a liquid oil phase or of being solubilized in colloidal form (for example in micellar form) in a liquid oil phase.

[0092] Lipophilic organic filters are selected in particular from cinnamic compounds; anthranilate compounds; salicylic compounds; dibenzoylmethane compounds; benzylidene camphor compounds; benzophenone compounds; [3,[3-diphenylacrylate] compounds; triazine compounds; benzotriazole compounds; benzalmalonate compounds, particularly those mentioned in US patent 5624663; benzimidazole derivatives; imidazoline compounds; compounds bis-benzoazolyl as described in patents EP669323 and US 2,463,264; methylene bis-(hydroxyphenyl benzotriazole) compounds as described in applications US5,237,071, US 5,166,355, GB2303549, DE 197 26 184 and EP893119; benzoxazole compounds as described in patent applications EP0832642, EP1027883, EP1300137 and DE10162844; filter polymers and filter silicones such as those described in particular in application WO-93 / 04665; α-alkylstyrene derived dimers such as those described in patent application DE19855649; 4,4-diarylbutadiene compounds as described in applications EP0967200, DE19746654, DE19755649, EP-A-1008586, EPI 133980 and EP133981 and mixtures thereof.

[0093] Preferably, the lipophilic organic filter(s) are chosen from salicylic compounds, dibenzoylmethane compounds, benzylidene camphor compounds; benzophenone compounds; triazine compounds; benzotriazole compounds; and mixtures thereof.

[0094] Examples of lipophilic organic photoprotective agents include those designated below by their INCI name and / or their chemical name. Cinnamic compounds:

[0095] Ethylhexyl Methoxycinnamate sold in particular under the trade name PARSOL® MCX by the company DSM Nutritional Products;

[0096] Isoamyl p-Methoxycinnamate sold under the trade name NEO HELIOPAN E 1000 ® by the company Symrise, Dibenzoylmethane compounds:

[0097] Butyl Methoxydibenzoylmethane (or avobenzone) sold in particular under the trade name PARSOL® 1789 by DSM Nutritional Products, Salicylic compounds#:

[0098] Homosalate sold under the name "Parsol® HMS" by DSM Nutritional Products, Ethylhexyl Salicylate sold under the name "NEO HELIOPAN® OS" by the company Symrise, P,P-diphenylacrylate compounds#:

[0099] Octocrylene sold in particular under the trade name “UVINUL® N 539 T” by BASF, Benzophenone compounds#:

[0100] Benzophenone-3 or Oxybenzone, sold under the trade name "UVINUL® M 40" by BASF,

[0101] Diethylamino hydroxybenzoyl hexyl benzoate sold under the trade name "UVINUL® A Plus" or in mixture with ethylhexyl methoxycinnamate under the trade name "UVINUL® A Plus B" by BASF, Benzylidene camphor compounds#:

[0102] 4-Methylbenzylidene camphor sold under the name “EUSOLEX® 6300” by the company MERCK, Phenyl benzotriazole compounds#:

[0103] Drometrizole Trisiloxane manufactured under the name “MEXORYL® XL” by the company NOVEAL,

[0104] Methylene bis-(hydroxyphenyl benzotriazole) compounds:

[0105] Methylene bis-Benzotriazolyl Tetramethylbutylphenol, particularly in solid form as the product sold under the trade name "MIXXIM BB / 100 ®" by FAIRMOUNT CHEMICAL, Triazine compounds#:

[0106] - Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine sold under the trade name “TINOSORB® S” by the company BASF,

[0107] - Ethylhexyl Triazone sold in particular under the trade name "UVINUL® T 150" by BASF,

[0108] - Diethylhexyl Butamido Triazone sold under the trade name "UVASORB®" HEB » by the company 3V SIGMA,

[0109] - symmetrical triazine filters substituted with naphthalenyl groups or polyphenyl groups described in US patent 6,225,467, application WO2004 / 085412 (see compounds 6 and 9) or the document "Symetrical Triazine Derivatives" IP.COM IPCOM000031257 Journal, INC WEST HENRIETTA, NY, US (September 20, 2004), Anthranilic Compounds#:

[0110] Menthyl anthranilate sold under the trade name "NEO HELIOPAN® MA" by Symrise, Benzalmalonate Compounds#:

[0111] Polyorganosiloxane with benzalmalonate functions such as Polysilicone-15 sold under the trade name “PARSOL SLX ®” by the company HOFFMANN LA ROCHE.

[0112] Hydrophilic (or water-soluble) or water-dispersible organic UV B filters

[0113] Preferably the hydrophilic (or water-soluble) organic filter is a water-soluble organic UVB filter.

[0114] The water-soluble organic UVB filters usable according to the present invention are in particular selected from water-soluble cinnamyl derivatives such as acid ferulic or 3-methoxy-4-hydroxycinnamic acid; water-soluble benzylidene camphor compounds; water-soluble phenylbenzimidazole compounds; water-soluble p-aminobenzoic (PABA) compounds, Glyceryl PABA or PEG-25 PABA sold under the name "UVINUL P25" by BASF; water-soluble salicylic compounds, Benzylidene Camphor Sulfonic Acid manufactured under the name "MEXORYL SL" by CHIMEX, Camphor Benzalkonium Methosulfate manufactured under the name "MEXORYL SO" by CHIMEX, and mixtures thereof.

[0115] Preferred examples of water-soluble organic UVB filters include phenylbenzimidazole compounds, such as 2-phenyl-1H-benzimidazole-5-sulfonic acid (INCI name: phenylbenzimidazole sulfonic acid) sold in particular under the trade name "EUSOLEX 232®" by MERCK.

[0116] Among the water-dispersible organic UVB filters, the following may be mentioned: Benzophenone compounds#:

[0117] 1,1 '-(1,4-piperazinediyl)bis [1 - [2- [4-(diethylamino)-2-hydroxybenzoyl]phenyl] - Methanone (CAS 919803-06-8) as described in application WO2007 / 071584; this compound being advantageously used in micronized form (average volume size of 0.02 to 2 µm) which can be obtained, for example, by the micronization process described in applications GB-A-2 303 549 and EP-A-893119 and in particular in aqueous dispersion form, Benzoxazole compounds#:

[0118] 2-[4-(l,3-benzoxazol-2-yl)phenyl]-l,3-benzoxazole, of cas number 904-39-2.

[0119] Inorganic UV filters

[0120] According to a particular embodiment of the invention, the compositions comprise at least one inorganic UV filter.

[0121] The inorganic UV filters that can be used according to the present invention are metal oxide pigments. More preferably, the inorganic UV filters of the invention are metal oxide particles having an average particle size less than or equal to 0.5 pm, more preferably between 0.005 and 0.5 pm, and even more preferably between 0.01 and 0.2 pm, even better between 0.01 and 0.1 pm, and more particularly between 0.015 and 0.05 pm. They are described in particular in Annex VI, updated on 22 / 09 / 2021, of European Cosmetics Regulation No. 1223 / 2009, but are not limited to this list.

[0122] They may in particular be chosen from titanium, zinc, iron, zirconium, cerium oxides or mixtures thereof.

[0123] Such metallic oxide pigments, coated or uncoated, are described in particular in patent application EP-A-0 518 773. As commercial pigments, we can mention the products sold by the companies CRODA, TAYCA, and MERCK.

[0124] Metal oxide pigments may be coated or uncoated.

[0125] Coated pigments are pigments that have undergone one or more surface treatments of a chemical, electronic, mechanochemical and / or mechanical nature with compounds such as amino acids, beeswax, fatty acids, fatty alcohols, anionic surfactants, lecithins, sodium, potassium, zinc, iron or aluminum salts of fatty acids, metal alkoxides (titanium or aluminum), polyethylene, silicones, proteins (collagen, elastin), alkanolamines, silicon oxides, metal oxides or sodium hexametaphosphate.

[0126] The coated pigments are more particularly titanium oxides coated:

[0127] - with hydrated silica such as the product “MT-100WP” from the company TAYCA,

[0128] - of silica and iron oxide such as the product "SUNVEIL F®" from the company IKEDA,

[0129] - of silica and alumina such as the products "MT-500SA®" and "MT-100SA®" of the TAYCA company, "TIOVEIL™ AQ-N" from CRODA company,

[0130] - of alumina such as the "TTO-55 (A)®" products from ISHIHARA,

[0131] - of alumina and aluminum stearate such as the products "MT-100TV®, MT-100Z®, MT-01®" from TAYCA, the "Solaveil™ CT100" product from CRODA and the "Eusolex T-AVO®" product from MERCK,

[0132] - of silica, alumina and alginic acid such as the product "MT-100AQ®" of the TAYCA company, - of alumina and aluminum laurate,

[0133] - of iron oxide and iron stearate,

[0134] - of zinc oxide and zinc stearate,

[0135] - of silica and alumina and treated with a silicone such as the products " MTY-500SAS®" or "MICROTITANIUM DIOXIDE MT-100SAS®" from the company TAYCA,

[0136] - of silica, alumina, aluminum stearate and treated with a silicone,

[0137] - of silica and treated with a silicone,

[0138] - of alumina and treated with a silicone such as the "TTO-55(S)®" products of the ISHIHARA company, - of triethanolamine

[0139] - of stearic acid such as the product "TTO-55 (C)®" from the ISHIHARA company,

[0140] - sodium hexametaphosphate,

[0141] - TiO2 treated with octyl trimethyl silane,

[0142] - TiO2 treated with a polydimethylsiloxane,

[0143] - TiO2 anatase / rutile treated with a polydimethylhydrogenosiloxane,

[0144] - TiO2 coated with triethylhexanoin, aluminium stearate, alumina sold under the trade name “Solaveil™ CT-200” by CRODA,

[0145] - TiO2 coated with aluminium stearate, alumina and silicone sold under the CRODA's trade name "Solaveil™ CT-12W",

[0146] - lauroyl lysine coated TiO2,

[0147] - TiO2 coated with C9-C15 fluoroalcohol phosphate and aluminium hydroxide.

[0148] Other examples include TiO2 pigments doped with at least one transition metal such as iron, zinc, manganese, and more particularly manganese. Preferably, these doped pigments are in the form of an oily dispersion. The oil present in the oily dispersion is preferably selected from triglycerides, including those of capric / caprylic acids. The oily dispersion of titanium dioxide particles may also include one or more dispersing agents, such as a sorbitan ester like sorbitan isostearate, a polyoxyalkylated fatty acid and glycerol ester like TRLPPG3 MYRISTYLETHER CITRATE and POLYGLYCERYL-3 POLYRICINOLEATE. Preferably, the oily dispersion of titanium dioxide particles includes at least one dispersing agent selected from polyoxyalkylated fatty acid and glycerol esters.One can cite in particular the oily dispersion of manganese-doped TiO2 particles in capric / caprylic acid triglyceride in the presence of TRLPPG-3 MYRISTYLETHER CITRATE and POLYGLYCERYL-3-POLYRICINOLEATE and SORBITAN ISOSTEARATE, INCI name: TITANIUM DIOXIDE (and) TRL PPG-3 MYRISTYLETHER CITRATE (and) POLYGLYCERYL-3 RICINOLEATE (and) SORBITAN ISOSTEARATE, or the product sold under the trade name "OPTISOL™ OTP-1" by the company CRODA.

[0149] Uncoated titanium oxide pigments are for example sold by the company TAYCA under the trade names "MT-500B" or "MT-600B®", by the company Evonik under the name "DEGUSSA P 25".

[0150] Uncoated zinc oxide pigments include, for example:

[0151] - those marketed under the name "Z-COTE®" by BASF;

[0152] - those marketed under the name "NanoArc® Zinc Oxide" by the company Nanophase Technologies.

[0153] Coated zinc oxide pigments are, for example:

[0154] - ZnO coated with polymethylhydrogenesiloxane;

[0155] - CRODA's "Solaveil™ CZ-100" dispersed in C12-15 alkyl benzoate (INCI: Zinc Oxide (and) C12-15 Alkyl Benzoate (and) Polyhydroxystearic Acid (and) Isostearic Acid);

[0156] - those marketed under the name and "DAITOPERSION Zn-60VA®" by the Daito Kasei company (dispersions in C9-12 alkane with a dispersing agent);

[0157] - those marketed under the name "SPD-Z5®" by the company Shin-Etsu (ZnO coated by silicone-grafted acrylic polymer, dispersed in cyclodimethylsiloxane).

[0158] Uncoated cerium oxide pigments may be, for example, those sold under the name RHODIGARD® W185 by the company Solvay.

[0159] We can also mention mixtures of metal oxides, in particular titanium dioxide and cerium dioxide, including the equal weight mixture of titanium dioxide and cerium dioxide coated with silica, as well as the mixture of titanium dioxide and zinc dioxide coated with alumina, silica and silicone or coated with alumina, silica and glycerin.

[0160] Preferably, the additional UV filter is a hydrophilic or hydrodispersible organic UVB filter, preferably a hydrophilic organic UVB filter, preferably Phenylbenzimidazole Sulfonic Acid.

[0161] Preferably, the additional UV filter is an inorganic UV filter, preferably coated titanium dioxide.

[0162] Preferably, the additional UV filter is a lipophilic organic UV filter, preferably selected from Diethylamino hydroxybenzoyl hexyl benzoate (in particular sold under the trade name "UVINUL® A Plus" or in mixture with ethylhexyl methoxycinnamate under the trade name "UVINUL® A Plus B" by BASF), Drometrizole Trisiloxane (in particular manufactured under the name "MEXORYL® XL" by NOVEAL), Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (in particular sold under the trade name "TINOSORB® S" by BASF), Ethylhexyl Triazone (sold in particular under the trade name "UVINUL® T 150" by BASF) and avobenzone.

[0163] Preferably, the additional UV filter is present in an amount of between 0.2% and 30% by weight, preferably between 0.5% and 20% by weight relative to the total weight of composition, preferably between 1% and 20% by weight, preferably between 1.5% and 15% by weight.

[0164] According to another embodiment, preferably the additional UV filter is present in an amount of less than 15% by weight, preferably less than 10% by weight, preferably less than 5% by weight relative to the total weight of composition, preferably less than 3% by weight, preferably less than 1% by weight. Acid and / or base

[0165] According to one embodiment, the cosmetic composition according to the invention may comprise an acid and / or a base.

[0166] Preferably, the composition according to the invention has a pH between 4 and 10, preferably between 5 and 8.5, and preferably between 5.5 and 8. Viscosity

[0167] The compositions according to the invention preferably have a viscosity of at least 0.10 Pa.s, measured at 25°C with a Lamy Rheology Rhéomat RM100® viscometer after 10 minutes. Preferably, it is between 0.10 and 20 Pa.s, preferably between 0.10 and 10 Pa.s, preferably between 0.10 and 5 Pa.s.

[0168] Such viscosity typically allows compositions to have a gel-like texture. Hardness

[0169] The compositions according to the invention preferably have a hardness greater than or equal to 0.3. The hardness is measured by penetrometry according to the following protocol (used in examples):

[0170] The composition according to the invention is poured into a pot 6.5 cm in diameter and 6 cm high. The TA.XT plus texture analyzer from Stable Micro Systems is used with a cylinder 11.97 mm in diameter to penetrate the composition (compression measurement). The cylinder moves orthogonally to the surface of the composition from a force equivalent to a mass of 0.1 g at a speed of 1 mm / second over a distance of 10 mm. The texture analyzer measures the mass equivalent force as a function of the displacement. The resulting curve can then be approximated by a second-degree polynomial:

[0171] [Math.l] y = a*x²+b*x+c

[0172] The component b indicates the hardness of the composition: the higher the value of b, the harder the composition.

[0173] According to a particular embodiment, the composition according to the invention further comprises cosmetically acceptable active ingredients and / or excipients.

[0174] By "cosmetically acceptable" is meant compatible with the skin and / or its appendages, which has a pleasant color, smell and feel and which does not generate unacceptable discomforts (tingling, tightness, redness), likely to deter the consumer from using this composition.

[0175] The compositions according to the invention may be in aqueous form, for example in the form of an aqueous gel or hydroalcoholic composition, but also in the form of an emulsion, in particular an oil-in-water or water-in-oil emulsion, or a biphasic.

[0176] When the composition according to the invention is in the form of an oil-in-water emulsion, it comprises an oily phase dispersed in an aqueous phase. When the composition according to the invention is in the form of a water-in-oil emulsion, it comprises an aqueous phase dispersed in an oily phase. In these cases, the aqueous phase comprises hydrophilic or water-dispersible organic filters. and the specific polysaccharide according to the invention. The term "oil phase" refers, according to the invention, to a liquid phase at 20-25°C and a pressure of 1.01325 x 10⁵ Pa. Such an "oil phase" generally comprises at least one oil. The term "oil" refers to any fat that is in liquid form at room temperature (20 to 25°C) and atmospheric pressure (760 mm Hg). The "fat" comprises at least one "fatty" hydrocarbon chain, that is, a linear hydrocarbon chain of at least four carbon atoms, unsaturated or non-unsaturated, optionally substituted, and in particular a linear C5-C30 hydrocarbon chain. The oil phase may comprise an oil and / or a fat-soluble UV filter (in particular as described above).

[0177] Preferably, the composition of the invention does not include an oil phase. Preferably, the compositions according to the invention are oil-free. For the purposes of the invention, the term "oil-free" means a composition comprising a single liquid phase that is an aqueous phase (a liquid phase comprising water). The term "oil" does not cover, for example, water-soluble active ingredients, water-soluble or water-dispersible UV filters, and water-soluble glycols.

[0178] Finally, the present invention also relates to a non-therapeutic cosmetic treatment method for keratinous materials, preferably skin, comprising applying a composition according to the invention to said keratinous materials. Such a method is particularly intended to protect keratinous materials, and especially skin, from UV radiation.

[0179] Concrete, but by no means limiting, examples illustrating the invention will now be given.

[0180] In the examples, the temperature is ambient temperature (20°C) and expressed in degrees Celsius unless otherwise stated, and the pressure is atmospheric pressure unless otherwise stated.

[0181] In the examples, the quantities of the ingredients of the compositions are given as % by weight relative to the total weight of the composition.

[0182] Example 1: Preparation and evaluation of compositions according to the invention and comparative compositions

[0183] Compositions A to H in Tables 1 and 2 below were prepared as follows.

[0184] The compositions according to the invention are compositions A to C and E to G, and the Comparative formulas are formulas D* and H* (marked with an asterisk).

[0185] In the tables below, the expression "ma" means "active substance".

[0186] Operating procedure:

[0187] 1. Preparation of phase A in a beaker: Under a stator rotor, introduce all the Ingredients from A are sprinkled over the gelling agent. The water temperature during mixing is approximately 90°C. Let it stir for 10 minutes at 600 rpm until a homogeneous mixture is obtained.

[0188] 2. Preparation of phase B in another beaker: Introduce all the ingredients of B. Stir with a magnetic stir bar until a clear liquid phase is obtained. The water temperature during mixing is approximately 90°C.

[0189] 3. Add B to A at a temperature of approximately 45°C while maintaining stirring under rotor-strator until a homogeneous mixture is obtained which will eventually gel.

[0190] All formulas have a pH of 7.4 just after manufacture, and of about 8.0 a few days later.

[0191] [Tables 1] Phase INCI ABCD* A Water Qsp 100 Preservatives Qs Qs Qs Qs A Agar 0.75 - - - Carrageenan kappa (GENUGEL CARRAGEENAN CG-130 of CP KELCO) - 0.75 - - Carrageenan iota (SATIAGEL VPC 50.8 - - GILL) Carrageenan lambda (SATIAGUM VPC 410 CARGILL) - - - 0.75 B Water 15 15 15 15 Terephthalylidène Dicamphre Sulfonic Acid (Mexoryl SX de Chimex ; 33% in) 30 (10% in) 30% (10% in) (10%) in 30 (To 10%) pH Adjuster QspH 7.4 Qs pH 7.4 Qs pH 7.4 Qs pH 7.4

[0192] During formulation, the pH was adjusted to 7.4, but after several days it is mostly 8.0 for all formulations.

[0193] [Tables2] Phase INCI EFGH* A Water Qsp 100 Preservatives Qs Qs Qs Qs A Agar 0.75 - - - Carrageenan kappa (GENUGEL CARRAGEEENAN CG-130 from CP KELCO) - 0.75 - - Carrageenan iota (SATIAGEL VPC 508 from CARGILL) - - 0.75 - Carrageenan lambda (SATIAGUM VPC 410 CARGILL) - - - 0.75 B Water 15 15 15 15 Disodium Phenyl Dibenzimidazole Tetra-sulfonate (Neoheliopan AP from SYMRISE) 10 10 10 10 pH adjuster QspH 7.4 Qs pH 7.4 Qs pH 7.4 Qs pH 7.4

[0194] The different compositions, once prepared, are tested for their stickiness and appearance as detailed below. Tights evaluation

[0195] All formulas were evaluated according to the same protocol by 10 different people.

[0196] Issuance of forms

[0197] The formulas were placed in a pump bottle which always delivers the same dose of formula, regardless of the formula (0.45 + / - 0.03 g).

[0198] For each evaluation, a dose is applied to the back of the hand with:

[0199] - on one hand the product outside the invention (formula D* or H* with carrageenan) lambda) and

[0200] - on the other one of the products according to the invention (formulas A to C or E to G with agar or kappa or iota carrageenan).

[0201] The evaluations are done in parallel on both hands in order to be able to compare well and have relative evaluations.

[0202] Evaluation of the tights

[0203] The formulas are applied by rotating them on each hand until dry. The stickiness is assessed on each hand and on the fingers that are applied every 30 seconds up to 5 minutes, then every minute up to 8 minutes.

[0204] The rating range extends from 0 (not sticky) to 5 (very sticky). In the case of a formula even stickier than 5, ratings of 6 and 7 were tolerated. This has little impact since the two products are evaluated relative to each other on the same scale.

[0205] Data processing

[0206] For each formula, all the scores were added together for each of the products.

[0207] The difference in the sum of scores is then averaged over the 10 evaluators. Aspect evaluation

[0208] The assessments focused on transparency, hardness and viscosity.

[0209] Transparency:

[0210] Quantitative evaluation: The Turbidimeter was used to measure the turbidity of each of the formulas, as indicated in the description.

[0211] Hardness'.

[0212] Quantitative evaluation: Penetrometry measurements were carried out using the protocol of the description.

[0213] Viscosity: it was measured at 25°C according to the protocol of the description.

[0214] For formulas A and E, viscosity is not measurable.

[0215] The results are shown in tables 3 to 5. Sticky#:

[0216] [Tables3] Formula A vs D * B vs D * C vsD * Mexoryl SX Hand 7 10 8.5 Mexoryl SX Finger ts 8.5 4 6.5 Formula EvsH * FvsH * GvsH * Neoheliopan AP Hand 8 5.5 3 Neoheliopan AP Finger ts 8.5 4.5 3

[0217] Regardless of the polysaccharide, the formulas are all less sticky than the comparative formulas D* and H* (containing lambda carrageenan), whether this stickiness is evaluated on the hand or on the fingers used to apply the product.

[0218] In order from least sticky to most sticky: - In the presence of Mexoryl SX: • on the hand: B (Kappa) < C (Iota) < A (Agar) < D* (Lambda) • on the fingers: A (Agar) < C (Iota) < B (Kappa) < D* (Lambda) - In the presence of Neohéliopan AP: • On the hand and on the fingers: E (Agar) < F (Kappa) < G (Iota) < H* (Lambda). Appearance#:

[0219] [Tables4] Formula ABCD* Turbidity (NTU) 100 16 7 13 Hardness (penetrometer reading) 18.5 5.2 0.4 0.1 Viscosity (Pa·s) Not measurable 0.58 Pa·s 0.54 Pa·s 0.057 Pa·s

[0220] [Tables5] EFGH* formula Turbidity (NTU) 103 64 5 16 Hardness (penetrometer reading) 19.1 0.9 0.3 0.1 Viscosity (Pa·s) Not measurable 0.13 Pa·s 0.54 Pa·s 0.048 Pa·s

[0221] The results show that regardless of the polysaccharide chosen according to the invention, the gel formed is more viscous than the gel formed with lambda carrageenan.

[0222] Turbidity measurements show that regardless of the polysaccharide, the formulas remain transparent (maximum of the order of 100 NTU for formulas A and E with agar), but that the thickening is much greater than in the presence of lambda carrageenan; this is observed by a greater hardness (penetrometer) for gels A to C and E to G, compared to the comparative gels D* and H*.

Claims

Demands

1. Composition, in particular cosmetic, comprising, in a physiologically acceptable aqueous medium: at least one hydrophilic or hydrodispersible organic filter capable of absorbing UV from 320 to 400 nm (UVA); and at least one polysaccharide derived from red algae and having a number of sulfate(s) per monomer less than or equal to 2.

2. Composition according to claim 1, characterized in that the hydrophilic or water-dispersible organic filter capable of absorbing UV from 320 to 400 nm (UVA) is a hydrophilic filter capable of absorbing UVA selected from Terephthalylidene Dicamphre Sulfonic Acid, bis-benzoazolyl derivatives, in particular Disodium Phenyl Dibenzimidazole Tetrasulfonate, Benzophenone-4, Benzophenone-5, Benzophenone-9 and mixtures thereof, or the hydrophilic or water-dispersible organic filter capable of absorbing UV from 320 to 400 nm (UVA) is a water-dispersible filter capable of absorbing UVA selected from Methylene bis-Benzotriazolyl Tetramethylbutylphenol in the form of an aqueous dispersion of micronized particles having a volume average particle size ranging from 0,01 to 5 pm with at least one alkylpolyglycoside surfactant of structure CnH2n+iO(C6HiO5)xH in which n is an integer from 8 to 16 and x is the average degree of polymerization of the unit (C6HiO5) and varies from 1.4 to 1.6, or as an aqueous dispersion of micronized particles having a volume average particle size that varies from 0.02 to 2 pm in the presence of at least one mono-(C8-C20)alkyl-ester of polyglycerol having a degree of polymerization of glycerol of at least 5; 3,3'-(l,4-Phenylene)bis(5,6-diphenyl-l,2,4-triazine); Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine in its hydrodispersible form; 2,4,6-tris(bi-phenyl)-triazine and 2,4,6-tris(ter-phenyl)-triazine.

3. Composition according to claim 1 or 2, characterized in that the hydrophilic or water-dispersible organic filter capable of absorbing UV radiation from 320 to 400 nm (UVA) is a hydrophilic UVA-absorbing filter selected from Terephthalylidene Dicamphre Sulfonic Acid, bis-benzoazolyl derivatives, in particular Disodium Phenyl Dibenzimidazole Tetrasulfonate, and their mixtures; preferably the hydrophilic filter capable of absorbing UVA is chosen from Terephthalylidene Dicamphire Sulfonic Acid, Disodium Phenyl Dibenzimidazole Tetra-sulfonate and their mixtures; preferably the hydrophilic filter capable of absorbing UVA is Terephthalylidene Dicamphire Sulfonic Acid or Disodium Phenyl Dibenzimidazole Tetra-sulfonate.

4. Composition according to any one of claims 1 to 3, characterized in that it comprises an amount of hydrophilic or hydrodispersible organic filter(s) capable of absorbing UVA of between 0.1% and 20% by weight, preferably between 0.1% and 15% by weight relative to the total weight of composition, preferably between 1% and 10% by weight.

5. Composition according to any one of claims 1 to 4, characterized in that the polysaccharide derived from red algae contains no sulfate.

6. Composition according to any one of claims 1 to 5, characterized in that the polysaccharide derived from red algae is agar.

7. Composition according to any one of claims 1 to 4, characterized in that the polysaccharide derived from red algae comprises 1 or 2 sulfate(s), preferably selected from kappa carrageenans, iota carrageenans and mixtures thereof.

8. Composition according to any one of claims 1 to 4, characterized in that the polysaccharide is selected from agar, kappa carrageenans, iota carrageenans and mixtures thereof.

9. Composition according to any one of claims 1 to 8, characterized in that it comprises from 0.01 to 20%, preferably from 0.01 to 10%, preferably from 0.01 to 5%, preferably from 0.01 to 3%, preferably from 0.1 to 3%, preferably from 0.1 to 1% and preferably from 0.3 to 1% by weight of polysaccharide relative to the total weight of the composition.

10. Composition according to any one of claims 1 to 9, characterized in that the aqueous medium comprises water and optionally at least one other water-soluble organic solvent at 25°C, preferably selected from C1-C4 monoalkanols, polyols having 2 to 20 carbon atoms and mixtures thereof.

11. A composition according to any one of claims 1 to 10, characterized in that it further comprises at least one additional UV filter selected from lipophilic organic UV filters, UVB filters hydrophilic or hydrodispersible organic filters and inorganic UV filters; preferably the additional UV filter is a water-soluble or hydrodispersible organic UVB filter, preferably Phenylbenzimidazole Sulfonic Acid, or an inorganic UV filter, preferably coated titanium dioxide.

12. Composition according to any one of claims 1 to 11, characterized in that it has a pH between 4 and 10, preferably between 5 and 8.5, and preferably between 5.5 and 8.

13. Composition according to any one of claims 1 to 12, characterized in that it does not comprise an oily phase.

14. A non-therapeutic cosmetic treatment process for keratinous materials, preferably of the skin, comprising applying to said keratinous materials a composition according to any one of claims 1 to 13.

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