Mask to lighten keratinous matter

Abstract

Mask for lightening keratinous materials. The present invention relates to a mask for lightening keratinous materials, comprising: A) a mask fabric, and B) a composition, comprising: a) at least one synthetic mica and / or fluorophlogopite; b) alginic acid and / or alginates; and c) at least one compound selected from xanthan gum, sclerotium gum, and hydroxylated derivatives of diphenylmethane. The present invention also relates to a non-therapeutic method for lightening keratinous materials with said mask. Figure for the abstract: none.

Description

Title of the invention: mask for lightening keratinous materials technical field

[0001] The present invention relates to a mask for lightening keratinous materials and a non-therapeutic method for lightening keratinous materials with said mask. STATE OF THE ART

[0002] Human skin tone depends on various factors, but is primarily determined by the nature and concentration of melanin produced by melanocytes. Melanocytes are specialized cells that synthesize melanin using specific organelles called melanosomes. Furthermore, at various times in their lives, some individuals notice the appearance of spots on their skin, particularly on their hands, which give the skin an uneven appearance.

[0003] Efforts have been made to develop cosmetic products to lighten the skin.

[0004] However, products on the market are rarely satisfactory, particularly in terms of instant skin lightening.

[0005] Consequently, there is still a need for cosmetic products to lighten the skin, which can give the skin an enhanced lightening effect. Summary of the invention

[0006] An object of the present invention is to develop a cosmetic product for lightening keratinous materials, which can give keratinous materials an improved lightening effect.

[0007] Thus, according to a first aspect, the present invention proposes a mask, preferably for lightening keratinous materials, comprising: A. a mask fabric, and B. a composition, comprising: a. at least one synthetic mica and / or fluorophlogopite; b. alginic acid and / or alginates; and c. at least one compound selected from xanthan gum, sclerotium gum, and hydroxylated derivatives of diphenylmethane.

[0008] According to a second aspect, the present invention also proposes a non-therapeutic method for lightening keratinous materials, comprising the application of the mask according to the present invention on the keratinous materials.

[0009] The inventors have discovered that the mask of the present invention can give keratinous materials an improved brightening effect.

[0010] Other subjects, features, aspects, and advantages of the present invention will be presented in the following description and will be partly evident from the description or may be learned through practice of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] As used herein, unless otherwise indicated, the limits of a range of values ​​are included in that range, in particular in the expressions "between... and..." and "from... to...".

[0012] As used herein, the term "including" should be interpreted as encompassing all specifically cited features as well as optional, additional, unspecified features.

[0013] As used herein, the use of the term "comprising" also discloses the embodiment in which no features other than the features specifically mentioned are present (i.e., "consisting of").

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as that commonly accepted by a person skilled in the art of the present invention. Where the definition of a term in this description conflicts with the meaning commonly accepted by a person skilled in the art of the present invention, the definition described herein shall prevail.

[0015] Unless otherwise specified, all numerical values ​​expressing a quantity of ingredients and the like used in the description and claims shall be understood as modified by the term "approximately". Accordingly, unless otherwise stated, the numerical values ​​and parameters described herein are approximate values ​​that may be changed according to the desired performance obtained, as required.

[0016] As used herein, the expression "at least one" used in this description is equivalent to the expression "one or more".

[0017] For the purposes of the present invention, the term "keratinous material" is intended to refer to skin, such as facial skin, hand skin, and arm skin. Facial skin is considered in particular in the context of the present invention.

[0018] The mask according to the present invention comprises: A. a mask fabric, and B. a composition, comprising: a. at least one synthetic mica and / or fluorophlogopite; b. alginic acid and / or alginates; and c. at least one compound selected from xanthan gum, sclerotium gum, and hydroxylated derivatives of diphenylmethane. Mask fabric

[0019] The mask according to the present invention comprises a mask fabric.

[0020] Preferably, the mask fabric is a water-insoluble mask fabric.

[0021] For the purposes of the present invention, the expression "insoluble mask fabric" "water" means that the mask fabric is not soluble in water, for example by having a solubility of less than 0.01 g / 100 g of water, or only slightly soluble in water, for example by having a solubility of less than 0.5 g / 100 g of water, and does not disintegrate in its raw state when immersed in water.

[0022] The fabric for the mask can be a woven or non-woven fabric.

[0023] For example, the mask fabric can be made from at least one fiber chosen from synthetic polymer fibers, semi-natural fibers, natural fibers and their mixtures.

[0024] Examples of synthetic polymer fibers include polyester fibers, polyethylene terephthalate fibers, polyethylene fibers and polypropylene fibers.

[0025] As an example of semi-natural fibers, viscose rayon fibers can be cited.

[0026] Examples of natural fibers include cotton, pulp, bamboo and cellulose fibers.

[0027] Preferably, the mask fabric has a liquid delivery capacity of 2.5 to 5.5 g.

[0028] As used here, liquid delivery capacity refers to the amount of liquid (for example, of the composition according to the present invention) impregnated in 1 cm2 of mask fabric.

[0029] Mask fabric can be made in a wide variety of shapes, such as flat pads, thick pads, or thin sheets of irregular thickness, depending on the intended use and the characteristics of the mask. For example, mask fabric is typically designed to conform to the skin area in the case of a mask intended for topical application. To this end, when the mask is applied to the face, the mask fabric is designed to match the shape of the face, avoiding, if necessary, the areas of the eyes, nostrils, and mouth. Synthetic mica and fluorophlogopite

[0030] The composition for the mask of the present invention comprises at least one synthetic mica and / or fluorophlogopite.

[0031] The mica useful for the present invention may be coated or uncoated.

[0032] The synthetic fluorophlogopite useful for the present invention may be coated or uncoated.

[0033] Synthetic mica and / or fluorophlogopite may be fully or partially coated with one or more layers of metal oxides selected from titanium dioxide, tin dioxide, iron dioxide, aluminum dioxide and their combinations.

[0034] Preferably, the synthetic mica and / or fluorophlogopite are in the form of particles.

[0035] Preferably, the synthetic mica and / or fluorophlogopite have an average size less than or equal to 100 pm, more preferably from 1 to 60 pm and even more preferably from 1 to 20 pm.

[0036] The term “average size” refers to the median volume size D

[50] , representing the maximum size of 50% of the particles by volume. Sizes are measured by static light scattering using a commercial Malvern MasterSizer 3000 particle size analyzer, which determines the particle size distribution of all particles over a wide range, from 0.01 pm to 1000 pm. The data are processed using standard Mie scattering theory. This theory is best suited for size distributions ranging from submicron to multimicron; it allows for the determination of an “effective” particle diameter.

[0037] Preferably, the composition for the mask according to the present invention comprises one or more of the following elements:

[0038] - sericites such as the commercial product Sericite S-152-BC® (average size 6 pm) from the Miyoshi Kasei company;

[0039] - muscovite-type micas (CI77019) (INCI name: mica) such as the product commercial Mearlmica DD® and Mearlmica SV® from BASF, Sumicos Velvet Mica 43037 ® from Souderarshan Chemical;

[0040] - a synthetic fluorophlogopite (INCI name: Synthetic Fluorophlogopite) such as the commercial product Synafil SI 15® (medium size 7.6 pm) from the Eckart company.

[0041] More preferably, the composition comprises a synthetic fluorophlogopite.

[0042] Advantageously, the mica and / or synthetic fluorphlogopite are present in the composition for the mask according to the present invention in a total quantity ranging from 0.01% by weight to 10% by weight, preferably from 0.03% by weight to 8% by weight, more preferably from 0.1% by weight to 5% by weight, relative to the total weight of the composition. Alginic acid and / or alginates

[0043] The composition for the mask of the present invention comprises alginic acid and / or alginates.

[0044] Preferably, the alginate is chosen from alkali metal salts or ammonium salts of alginic acid. The alginate is soluble in water.

[0045] Alginic acid, a natural substance obtained from brown algae or certain bacteria, is a polyuronic acid composed of two uronic acids linked together by 1,4-glycoside bonds: [3-D-mannuronic acid (M) and aL-glucuronic acid (G).

[0046] Alginic acid is capable of forming water-soluble salts (alginates) with alkali metals such as sodium, potassium, lithium, or ammonia. These alginates are soluble in water in an aqueous medium at pH 4, but dissociate into alginic acid at a pH below 4.

[0047] Processes for recovering these water-soluble salts, in particular sodium alginate, from natural sources are well known and are described, for example, in Green, US patent no. 2,036,934, and Le Gloahec, US patent no. 2,128,551.

[0048] Preferably, the alginates have a weight-average molecular weight of about 20,000 Daltons to about 500,000 Daltons. The weight-average molecular weight is calculated by first determining the intrinsic viscosity and then using the Mark-Houwink Sakurada equation, as in Martinsen, et al, “Comparison of Different Methods for Determination of Molecular Weights and Molecular Weight Distribution of Alginates” (Carbohydre. Polym., 15, 171-193, 1991).

[0049] A list of various commercially available alginates, their properties and sources can be found in Shapiro, US patent no. 6,334,968, Table 1, column 16, row 49, to column 17, row 18.

[0050] According to one embodiment of the present invention, the alginate is chosen from sodium alginate, ammonium alginate, potassium alginate and one of their mixtures.

[0051] According to one embodiment of the present invention, the composition comprises at least one of alginic acid, sodium alginate, ammonium alginate and potassium alginate.

[0052] Alginic acid and / or alginates which are suitable for use in the present invention may be represented, for example, by the products sold under the names Kelcosol, Satialgine™, Cecalgum™ or Algogel™ by Cargill Products, under the name Protanal™ by FMC Biopolymer, under the name Alginate by Danisco, under the name Kimica Algin by Kimica, and under the name PROTANAL PH 6160 by DUPONT.

[0053] Advantageously, alginic acid and / or alginates are present in the composition for the mask according to the present invention in an amount ranging from 0.001% by weight to 10% by weight, preferably from 0.002% by weight to 3% by weight, more preferably from 0.003% by weight to 1% by weight, even more preferably from 0.004% by weight to 0.3% by weight, most preferably from 0.005% by weight to 0.1% by weight, relative to the total weight of the composition.

[0054] Compounds selected from xanthan gum, sclerotium gum and hydroxylated derivatives of diphenylmethane

[0055] The composition for the mask of the present invention comprises at least one compound selected from xanthan gum, sclerotium gum and hydroxylated derivatives of diphenylmethane. Xanthan gum and sclerotium gum

[0056] Xanthan gum is a heteropolysaccharide produced by the aerobic fermentation of the bacterium Xanthomonas campestris. Its structure consists of a main chain of [3-D-glucoses] with [3(1,4) linkages, similar to cellulose. Every other glucose molecule carries a trisaccharide side chain composed of an α-D-mannose, a [3-D-glucuronic acid], and a terminal [3-D-mannose]. The internal mannose residue is generally acetylated at carbon 6. Approximately 30% of the terminal mannose residues bear a pyruvate group chelated between carbons 4 and 6. The charged glucuronic and pyruvic acids are ionizable and are therefore responsible for the anionic nature of xanthan gum (negative charge up to a pH of 1). These groups can be neutralized in commercial products with Na+, K+ or Ca2+ ions (Satia company, 1986).The neutralized form can be converted to the acidic form by ion exchange or by dialysis of an acidic solution.

[0057] As an example of commercial xanthan gum products useful in the composition for the mask according to the present invention, we can cite the product sold under the name KELTROL CG-T by the company CP KELCO.

[0058] Sclerotium gum is a polysaccharide of microbial origin produced by a Sclerotium-type fungus, in particular Sclerotium rolfsii. It is a polysaccharide consisting solely of glucose units.

[0059] As examples of commercial sclerotium gum products useful in the composition for the mask according to the present invention, we can cite the products sold under the name Actigum CS, in particular Actigum CS 11 by Sanofi Bio Industries, and under the name Amigum or Amigel by Alban Muller International.

[0060] In some preferred embodiments, the composition for the mask according to the present invention comprises a sclerotium gum.

[0061] In some preferred embodiments, the composition for the mask according to the present invention comprises a xanthan gum and a sclerotium gum.

[0062] If present, advantageously, xanthan gum and / or sclerotium gum are present in the composition for the mask according to the present invention in an amount ranging from 0.001% by weight to 10% by weight, preferably from 0.002% by weight to 3% by weight, more preferably from 0.003% by weight to 1% by weight, even more preferably from 0.005% by weight to 0.5% by weight, most preferably from 0.01% by weight to 0.2% by weight, relative to the total weight of the composition. Hydroxyl derivatives of diphenylmethane

[0063] Preferably, the hydroxylated derivative of diphenylmethane is represented by the formula (I) below:

[0064] in which:

[0065] - RI is chosen from a hydrogen atom, a methyl group, a chain saturated or unsaturated, linear or branched hydrocarbon containing 2 to 4 carbon atoms, an -OH group and a halogen,

[0066] - R2 is chosen from a hydrogen atom, a methyl group, and a chain saturated or unsaturated, linear or branched hydrocarbon containing 2 to 5 carbon atoms,

[0067] - R3 is chosen from a methyl group or a saturated hydrocarbon chain or unsaturated, linear or branched, containing 2 to 5 carbon atoms,

[0068] - R4 and R5 are, independently of each other, chosen from an atom hydrogen, a methyl group, a saturated or unsaturated, linear or branched hydrocarbon chain containing 2 to 5 carbon atoms, an -OH group or a halogen.

[0069] The -OH, RI, R4 and R5 groups can be in ortho, meta or para position relative to the bond formed with the carbon linking the two aromatic rings to each other.

[0070] Preferably, in formula (I),

[0071] - RI is chosen from a hydrogen atom and a C1-C4 alkyl,

[0072] - R2 is chosen from a hydrogen atom and a C1-C6 alkyl group,

[0073] - R3 is chosen from a C1-C6 alkyl group,

[0074] - R4 and R5 are, independently of each other, chosen from an atom of hydrogen and an alkyl group in C1-C6,

[0075] - the -OH groups are in ortho and para positions relative to the bond formed with the carbon linking the two aromatic rings together.

[0076] More preferably, in formula (I),

[0077] - RI is chosen from a hydrogen atom and a C1-C4 alkyl,

[0078] - R2 is chosen from a hydrogen atom and a C1-C4 alkyl group,

[0079] - R3 is chosen from a C1-C4 alkyl group,

[0080] - R4 and R5 are, independently of each other, chosen from an atom of hydrogen and an alkyl group in C1-C4,

[0081] - the -OH groups are in ortho and para positions relative to the bond formed with the carbon linking the two aromatic rings together.

[0082] Even more preferably, in formula (I),

[0083] - RI, R2, R4 and R5 denote a hydrogen atom;

[0084] - R3 is chosen from a C1-C4 alkyl group,

[0085] - the -OH groups are in ortho and para positions relative to the bond formed with the carbon linking the two aromatic rings together.

[0086] According to a preferred embodiment of the present invention, a compound of formula (I) is used in which:

[0087] - RI, R2, R4 and R5 denote a hydrogen atom;

[0088] - R3 is a methyl group;

[0089] - the -OH groups are in ortho and para positions relative to the bond formed with the carbon linking the two aromatic rings together.

[0090] This compound corresponds to formula (II) below:

[0091] known as 4-(l-phenylethyl)-l,3-benzenediol or 4-(l-phenylethyl)-1,3-dihydroxybenzene or otherwise known as phenylethylresorcinol or phenylethylbenzenediol or styrylresorcinol. This compound has CAS number 85-27-8. Such a compound is available under the name Symwhite 377® or Bio 377 from the Symrise company.

[0092] If present, advantageously, the hydroxylated derivative of diphenylmethane is present in the composition for the mask according to the present invention in an amount ranging from 0.001% by weight to 10% by weight, preferably from 0.003% by weight to 5% by weight. % by weight, more preferably from 0.01% by weight to 3% by weight, even more preferably from 0.03% by weight to 2% by weight, most preferably from 0.05% by weight to 1% by weight, relative to the total weight of the composition. Aqueous phase

[0093] The composition of the present invention may include an aqueous phase.

[0094] Preferably, said aqueous phase comprises water.

[0095] Advantageously, water is present in the composition of the present invention in an amount ranging from 60% by weight to 99% by weight, preferably from 65% by weight to 95% by weight, relative to the total weight of the composition.

[0096] Preferably, the aqueous phase comprises an organic solvent miscible with water (at room temperature of 25 °C) selected from ethanol and polyols having from 2 to 20 carbon atoms, preferably from 2 to 10 carbon atoms, and preferably having from 2 to 6 carbon atoms, and one of their combinations, such as glycerin, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, dipropylene glycol, diethylene glycol; and one of their combinations.

[0097] Preferably, the composition includes glycerin.

[0098] Preferably, the organic solvent is present in an amount ranging from 0.5% by weight to 30% by weight, preferably from 1% by weight to 20% by weight, relative to the total weight of the composition.

[0099] Preferably, the composition comprises from 0.5% by weight to 30% by weight, preferably from 1% by weight to 20% by weight of glycerin, relative to the total weight of the composition.

[0100] Advantageously, the aqueous phase is present in the composition of the present invention in an amount ranging from 60% by weight to 99.5% by weight, preferably from 65% by weight to 99% by weight, relative to the total weight of the composition. Oils

[0101] Preferably, the composition for the mask according to the present invention comprises one or more oils.

[0102] As used herein, the term "oil" refers to a fatty compound or oily substance that is in the form of a liquid or a paste (not solid) at room temperature (25 °C) under atmospheric pressure (760 mmHg). Oils commonly used in cosmetics can be used alone or in combination.

[0103] The oil suitable for the composition for the mask according to the present invention is not particularly limited.

[0104] For example, the oil can be chosen from vegetable oils, synthetic oils, and mixtures thereof.

[0105] Examples of vegetable oils include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0106] Examples of synthetic oils include ester oils, ether oils, alcohol oils, hydrocarbon oils, and mixtures thereof.

[0107] Preferably, the composition for the mask according to the present invention comprises at least one oil selected from ester oils, alcohol oils, and their combinations.

[0108] Preferably, the ester oils are liquid esters of saturated or unsaturated, linear or branched, Ci-C26 aliphatic monoacids or polyacids, and of saturated or unsaturated, linear or branched, Ci-C26 aliphatic monoalcohols or polyalcohols, the total number of carbon atoms of the esters being greater than or equal to 10.

[0109] Examples of ester oils include isononyl isononanoate, isotridecyl isononanoate, tridecyl trimellitate, diisostearyl malate, dicaprylyl carbonate, etc.

[0110] Preferably, the alcohol oils are alcohols comprising 12 to 26 carbon atoms, preferably branched alcohols comprising 12 to 26 carbon atoms.

[0111] Examples of alcohol oils include octyldodecanol, isostearyl alcohol, etc.

[0112] More preferably, the composition for the mask according to the present invention comprises at least one oil selected from liquid esters of saturated and linear or branched C1 to C1 aliphatic monoacids or diacids and of saturated and linear or branched C2 to C1 aliphatic monoalcohols or glycols, the total number of carbon atoms of the esters being greater than or equal to 10, branched alcohol oils comprising 12 to 26 carbon atoms, and their combinations.

[0113] Even more preferably, the composition for the mask according to the present invention comprises at least one oil selected from dicaprylyl carbonate, octyldodecanol and their combinations.

[0114] Advantageously, the oil is present in the composition for the mask according to the present invention in an amount ranging from 0.1% by weight to 10% by weight, preferably from 0.3% by weight to 8% by weight, more preferably from 0.5% by weight to 5% by weight, relative to the total weight of the composition. Additional cosmetic active ingredients

[0115] Depending on the final objective, the composition for the mask according to the present invention may include one or more additional cosmetic active ingredients.

[0116] It is easy for a person skilled in the art to adjust the quantity of additional cosmetic active ingredients according to the final use of the mask according to the present invention. Additional adjuvants or additives

[0117] The composition of the present invention may include conventional cosmetic adjuvants or additives, for example perfumes, preservatives and bactericides, pH correctors, surfactants, and combinations thereof.

[0118] A person skilled in the art can choose the quantity of additional adjuvants or additives so that it does not have a negative impact on the final use of the mask according to the present invention.

[0119] According to a preferred embodiment, the present invention provides a mask, preferably for lightening keratinous materials, comprising: A. a mask fabric, and B. a composition comprising, in relation to the total weight of the composition: a. from 0.1% by weight to 5% by weight of a synthetic fluorophlogopite; b. from 0.005% by weight to 0.1% by weight of at least one of the acid alginic, sodium alginate, ammonium alginate and potassium alginate; And c. 0.01% by weight to 0.2% by weight of xanthan gum and / or sclerotium gum, and / or 0.05% by weight to 1% by weight of phenylethylresorcinol. Use and process

[0120] The mask according to the present invention is intended for topical application and can be used in particular to lighten keratinous materials, especially the skin.

[0121] In particular, the mask according to the present invention can be used for the care of keratinous materials, in particular skin.

[0122] According to the second aspect, the present invention proposes a non-therapeutic method for lightening keratinous materials, in particular skin, comprising the application of the mask as defined above to the keratinous materials.

[0123] In particular, keratinous materials are the skin of the face and / or the skin around the eyes.

[0124] In certain embodiments, the present invention proposes a non-therapeutic method for lightening keratinous materials, in particular skin, comprising:

[0125] the application of the mask according to the present invention on keratinous materials;

[0126] leaving the mask on the keratinous materials for a certain time; and

[0127] the removal of the mask from keratinous materials. Examples

[0128] The present invention is illustrated in more detail by the examples described below, which are given by way of non-limiting illustrations.

[0129] The main raw materials used, their trade names and their suppliers are listed in Table 1.

[0130] [Tables 1] INCI Name Trade Name Supplier Synthetic Fluorophlogopite (Synthetic fluorphlogopite) SYNAFILS115 ECKART Sodium Alginate (Sodium alginate) PROTANAL PH 6160 DUPONT Phenylethyl Resorcinol (Phenylethyl resorcinol) SYMWHITE® 377 SYMRISE Sclerotium Gum (and) Xanthan Gum (Sclerotium gum (and) xanthan gum) Actigum™ VSX 20 IMERYS

[0131] Examples 1 and 2 of the invention and Comparative Examples 1 and 2

[0132] The compositions of Examples of the Invention (EL) 1 and 2 and Comparative Examples (EC.) 1 and 2 were prepared with the ingredients listed in Table 2 (the content is expressed as a percentage by weight of each ingredient relative to the total weight of each composition).

[0133] [Tables2] Ingredients ELI EI.2 EC.l EC.2 Glyceryl stearate (and) PEG-1 stearate 00 0.5 0.5 0.5 0.5 Glycerin 3 3 3 3 Octyldodecanol 1 1 1 1 Sodium alginate 0.01 0.01 0.01 Sclerotium gum (and) xanthan gum 0.02 0.02 Phenylethyl resorcinol 0.1 Synthetic fluorophlogopite 0.5 0.5 0.5 0.5 Water QS100 QS100 QS100 QS100

[0134] The compositions of examples 1 and 2 of the invention represent the composition for the mask according to the present invention.

[0135] The composition of comparative example 1 does not include at least one compound selected from xanthan gum, sclerotium gum and hydroxylated derivatives of diphenylmethane.

[0136] The composition of comparative example 2 does not include alginic acid and / or alginates.

[0137] Preparation process:

[0138] Each composition of examples 1 and 2 of the invention and of the comparative examples Parts 1 and 2 were prepared as follows: i. Sclerotium gum (and) xanthan gum where appropriate, phenylethylresorcinol where appropriate, synthetic fluorophlogopite and surfactants (glyceryl stearate (and) PEG-100 stearate) were added to octyldodecanol with stirring and heating to about 75 °C to obtain phase A; ii. Glycerin was added to water under stirring and heating to approximately 75 °C to obtain phase B; and iii. Phase A was added to phase B under stirring for 10 minutes, then cooled to about 45 °C, sodium alginate, if necessary, was added under stirring to obtain a uniform composition.

[0139] Evaluation:

[0140] The brightening effect of each composition prepared above was evaluated using an in vitro glossmeter as follows.

[0141] Each composition was applied to the black and white card to form a 100 µm thick film using a coating machine. The card was placed in an oven at 37 °C for 24 hours. Then, a point on the white card was measured once, and the data obtained at 60°C by the glossmeter were recorded as a percentage of whitening.

[0142] The percentage of lightening offered by each composition of Examples 1 and 2 of the invention and Comparative Examples 1 and 2 has been summarized in Table 3.

[0143] [Tables3] Properties ELI EI.2 EC.1 EC.2 Percentage (%) 68 70 61 62

[0144] Table 3 shows that each composition of examples 1 and 2 of the invention offers a better brightening effect, compared to those of comparative examples 1 and 2.

Claims

Demands

1. Mask, preferably for the treatment of keratinous materials, comprising: A) a mask fabric, and B) a composition, comprising: a) at least one synthetic mica and / or fluorophlogopite; b) alginic acid and / or alginates; and c) at least one compound selected from xanthan gum, sclerotium gum, and hydroxylated derivatives of diphenylmethane.

2. Mask according to claim 1, wherein the mica and / or synthetic fluorophlogopite are uncoated or wholly or partially coated with one or more layers of metal oxides selected from titanium dioxide, tin dioxide, iron dioxide, aluminum dioxide and combinations thereof; preferably, the composition comprises one or more of the following: sericites, muscovite, micas and a synthetic fluorophlogopite, more preferably, the composition comprises a synthetic fluorophlogopite.

3. Mask according to claim 1 or 2, wherein the mica and / or synthetic fluorophlogopite are present in a total amount from 0.01% by weight to 10% by weight, preferably from 0.03% by weight to 8% by weight, more preferably from 0.1% by weight to 5% by weight, relative to the total weight of the composition.

4. Mask according to any one of claims 1 to 3, wherein the alginate is selected from sodium alginate, ammonium alginate, potassium alginate and a mixture thereof.

5. Mask according to any one of claims 1 to 4, wherein alginic acid and / or alginates are present in an amount from 0.001% by weight to 10% by weight, preferably from 0.002% by weight to 3% by weight, more preferably from 0.003% by weight to 1% by weight, even more preferably from 0.004% by weight to 0.3% by weight, most preferably from 0.005% by weight to 0.1% by weight, relative to the total weight of the composition.

6. Mask according to any one of claims 1 to 5, wherein the hydroxylated derivative of diphenylmethane is represented by the formula (I) below: (I) in which: -RI is chosen from a hydrogen atom, a methyl group, a saturated or unsaturated, linear or branched hydrocarbon chain containing 2 to 4 carbon atoms, an -OH group and a halogen, - R2 is chosen from a hydrogen atom, a methyl group, and a saturated or unsaturated, linear or branched hydrocarbon chain containing 2 to 5 carbon atoms, - R3 is chosen from a methyl group or a saturated or unsaturated, linear or branched hydrocarbon chain containing 2 to 5 carbon atoms, - R4 and R5 are, independently of each other, chosen from a hydrogen atom, a methyl group, a saturated or unsaturated hydrocarbon chain, linear or branched, containing 2 to 5 carbon atoms, an -OH group or a halogen, preferably, in formula (I), -RI is chosen from a hydrogen atom and a C1-C4 alkyl group, - R2 is chosen from a hydrogen atom and a C1-C6 alkyl group, - R3 is chosen from a C1-C6 alkyl group. - R4 and R5 are chosen independently of each other from a hydrogen atom and an alkyl group in C1-C6, - the -OH groups are in ortho and para positions relative to the bond formed with the carbon linking the two aromatic rings to each other, more preferably, in formula (I), -RI is chosen from a hydrogen atom and a C1-C4 alkyl group, - R2 is chosen from a hydrogen atom and a C1-C4 alkyl group, - R3 is chosen from a C1-C4 alkyl group. - R4 and R5 are chosen independently of each other from a hydrogen atom and an alkyl group in C1-C4, - the -OH groups are in ortho and para positions relative to the bond formed with the carbon linking the two aromatic rings to each other, even more preferably, in formula (I), - RI, R2, R4 and R5 denote a hydrogen atom; - R3 is chosen from a C1-C4 alkyl, the -OH groups are in ortho and para positions relative to the bond formed with the carbon linking the two aromatic rings to each other, most preferably, the hydroxylated derivative of diphenylmethane is phenylethylresorcinol.

7. Mask according to any one of claims 1 to 6, wherein xanthan gum and / or sclerotium gum are present in an amount from 0.001% by weight to 10% by weight, preferably from 0.002% by weight to 3% by weight, more preferably from 0.003% by weight to 1% by weight, even more preferably from 0.005% by weight to 0.5% by weight, most preferably from 0.01% by weight to 0.2% by weight, relative to the total weight of the composition.

8. Mask according to any one of claims 1 to 7, wherein the hydroxylated derivative of diphenylmethane is present in an amount from 0.001% by weight to 10% by weight, preferably from 0.003% by weight to 5% by weight, more preferably from 0.01% by weight to 3% by weight, even more preferably from 0.03% by weight to 2% by weight, most preferably from 0.05% by weight to 1% by weight, relative to the total weight of the composition.

9. A mask according to claim 1, comprising: A) a mask fabric, and B) a composition comprising, in relation to the total weight of the composition: a) 0.1% by weight to 5% by weight of a synthetic fluorophlogopite; b) 0.005% by weight to 0.1% by weight of at least one of alginic acid, sodium alginate, ammonium alginate and potassium alginate; and c) 0.01% by weight to 0.2% by weight of xanthan gum and / or sclerotium gum, and / or 0.05% by weight to 1% by weight of phenylethylresorcinol.

10. Non-therapeutic method for lightening keratinous materials, comprising the application of the mask according to any one of claims 1 to 9 on keratinous materials.