Keratinous material care composition and mask containing it

Abstract

Keratinous material care composition and mask containing it The present invention relates to a keratinous material care composition and a mask containing it. The composition comprises in an aqueous phase: i) magnesium aluminum silicate; ii) at least one hydroxy acid; iii) at least one pH correcting agent; iv) at least one chelating agent; and v) at least one phenolic antioxidant. The present invention also relates to a non-therapeutic process for caring for keratinous materials. Figure for abstract: none

Description

Title of the invention: Keratinous material care composition and mask containing it Technical field

[0001] The present invention relates to a composition for caring for keratinous materials and a mask containing it. The present invention also relates to a non-therapeutic process for caring for keratinous materials. STATE OF THE ART

[0002] A mask formed by a fabric such as a sheet of non-woven fabric impregnated with a lotion or the like has been used for cosmetic treatments of the skin, particularly of the face.

[0003] Masks are popular with many consumers because they can put the masks on the face for a while and then remove them, without massaging them on the face during application.

[0004] It is also known to use active ingredients in cosmetic skin care products, such as cleansing, moisturizing, pore minimizing, etc.

[0005] Some clay mask formulations include hydroxy acid and niacinamide to fight acne / sebum and prevent blemishes. The hydroxy acid results in a formulation with a lower pH, but makes the formulation unstable because water comes out to the surface and the color changes.

[0006] Thus, there is a need for a skin care clay mask, the lotion it contains comprising a hydroxyl acid is stable. Summary of the invention

[0007] Thus, an object of the present invention is to provide a skin care clay mask, the lotion it contains comprising a hydroxy acid is stable.

[0008] Thus, according to a first aspect, the present invention provides a composition comprising in an aqueous phase:

[0009] i) magnesium aluminum silicate;

[0010] ii) at least one hydroxy acid;

[0011] iii) at least one pH correcting agent;

[0012] iv) at least one chelating agent; and

[0013] v) at least one phenolic antioxidant.

[0014] It has been found that the composition is stable over time.

[0015] In the present application, "stable" means that the composition has obvious changes in pH, appearance and viscosity for at least two months.

[0016] The composition according to the present invention can be used for skin care.

[0017] According to a second aspect, the present invention provides a care mask for keratinous materials, comprising:

[0018] A) a water-insoluble mask fabric, and

[0019] B) the composition according to the present invention impregnated in the mask fabric.

[0020] According to a third aspect, the present invention provides a non- therapeutic treatment of keratinous materials, comprising the steps of:

[0021] (i) applying the composition or mask according to the present invention to the materials keratinous;

[0022] (ii) allowing the composition or mask to remain on the keratinous materials for a certain time; and

[0023] (iii) removing the composition or mask from the keratinous materials.

[0024] Other aspects and advantages of the present invention will appear more clearly on reading the description and examples which follow. DETAILED DESCRIPTION OF THE INVENTION

[0025] Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the field to which the present invention relates. Where the definition of a term in the present invention conflicts with the meaning commonly understood by those skilled in the art in the field to which the present invention relates, the definition described herein shall apply.

[0026] In the following, and unless otherwise indicated, the limits of a range of values ​​are included in this range, in particular in the expressions "between... and..." and "from... to...".

[0027] Furthermore, the expression “at least one” used in the present description is equivalent to the expression “one or more”.

[0028] Throughout the present application, the term "comprising" should be interpreted to encompass all specifically mentioned features as well as optional, additional, and unspecified features. As used herein, the term "comprising" also discloses the embodiment in which no features other than the specifically mentioned features are present (i.e., "consisting of").

[0029] Unless otherwise indicated, all numerical values ​​expressing an amount of ingredients and the like which are used in the description and claims are to be understood as being modified by the term "about". Accordingly, unless otherwise indicated, the numerical values ​​and parameters described in this document are approximate values ​​which may be modified, if necessary, depending on the intended purpose.

[0030] In the present invention, all percentages, unless otherwise indicated, denote a percentage by weight.

[0031] In the context of the present invention, the expression "keratinous materials" means the entire skin of the body, excluding the scalp and mucous membranes. The expression "keratinous materials" preferably relates to the skin of the face, in particular the skin of the forehead and / or the sides of the nose and / or the chin.

[0032] According to the first aspect, the present invention provides a composition comprising in an aqueous phase:

[0033] i) magnesium aluminum silicate;

[0034] ii) at least one hydroxy acid;

[0035] iii) at least one pH correction agent;

[0036] iv) at least one chelating agent; and

[0037] v) at least one phenolic antioxidant. Magnesium aluminum silicate

[0038] According to the first aspect, the composition of the present invention comprises magnesium aluminum silicate.

[0039] Magnesium aluminum silicate is a natural mineral obtained from silicate ores of the montmorillonite group, their class number is 1327-43-1 and their molecular formula is MgAl[Al(SiO4)2].

[0040] As a commercial product of magnesium aluminum silicate, mention may be made of that available under the name VEEGUM R from the company VANDERBILT.

[0041] Advantageously, the magnesium aluminum silicate is present in an amount ranging from 0.1% by weight to 10% by weight, preferably from 0.5% by weight to 6% by weight, more preferably from 1% by weight to 4% by weight, relative to the total weight of the composition. Hydroxyacids

[0042] According to the first aspect, the composition according to the present invention comprises at least one hydroxy acid.

[0043] The hydroxy acid is selected from alpha hydroxy acid and beta hydroxy acid, and combinations thereof. Alpha hydroxy acids

[0044] The expression "alpha-hydroxy acid" is intended to mean, according to the present invention, a carboxylic acid having at least one occupying hydroxyl functional group an alpha position on said acid (carbon adjacent to a carboxylic acid functional group).

[0045] Suitable alpha hydroxy acids include glycolic acid, citric acid, lactic acid, methyllactic acid, glucuronic acid, pyruvic acid, 2-hydroxybutanoic acid, 2-hydroxypentanoic acid, 2-hydroxyhexanoic acid, 2-hydroxyheptanoic acid, 2-hydroxyoctanoic acid, 2-hydroxynonanoic acid, 2-hydroxydecanoic acid, 2-hydroxyundecanoic acid, 2-hydroxydodecanoic acid, 2-hydroxytetradecanoic acid, 2-hydroxyhexadecanoic acid, 2-hydroxyoctadecanoic acid, 2-hydroxytetracosanoic acid, 2-hydroxyeicosanoic acid, mandelic acid, phenyllactic acid, gluconic acid, galacturonic acid, aleuritic acid, ribonic acid, tartronic acid, tartaric acid, malic acid, fumaric acid.

[0046] Preferably, the alpha hydroxy acid is selected from lactic acid, glycolic acid, tartaric acid, mandelic acid, citric acid, and combinations thereof. Beta hydroxy acids

[0047] The term "beta-hydroxy acid" is intended to mean, according to the present invention, a carboxylic acid having a hydroxyl functional group and a carboxylic functional group separated by two carbon atoms.

[0048] Preferably, the beta hydroxy acid is selected from salicylic acid and its derivatives of formula (II):

[0049] in which R is a linear, branched or cyclic saturated aliphatic group or an unsaturated aliphatic group containing one or a number of double bonds, which may or may not be conjugated, these groups containing from 2 to 22, preferably from 3 to 11 carbon atoms and which may be substituted for example by at least one substituent selected from (a) halogen atoms, (b) the trifluoromethyl group, (c) hydroxyl groups in free form or esterified by an acid having from 1 to 6 carbon atoms or (d) a carboxyl functional group which is free or esterified by a lower alcohol having from 1 to 6 carbon atoms;

[0050] R' is a hydroxyl group or an ester functional group of formula (II): --O — C — R^ 11 ) O

[0051] in which Ri is a saturated or unsaturated, linear or branched aliphatic group having from 1 to 18 carbon atoms.

[0052] Preferred salicylic acid derivatives include 5-n-octanoyl salicylic acid (capryloyl salicylic acid), 5-n-decanoyl salicylic acid, 5-n-dodecanoyl salicylic acid, 5-n-heptyloxy salicylic acid and 4-n-heptyloxy salicylic acid.

[0053] Preferably, the composition according to the present invention comprises a compound selected from salicylic acid, 5-n-octanoyl salicylic acid, 5-n-decanoyl salicylic acid, 5-n-dodecanoyl salicylic acid, 5-n-heptyloxy salicylic acid, 4-n-heptyloxy salicylic acid, and a combination thereof.

[0054] More preferably, the composition according to the present invention comprises salicylic acid.

[0055] The hydroxy acid is contained to allow better penetration of the composition in the skin.

[0056] Advantageously, the hydroxy acid is present in an amount ranging from 0.1% by weight to 3% by weight, preferably from 0.2% by weight to 2% by weight, and more preferably from 0.3% by weight to 1.5% by weight, relative to the total weight of the composition. pH correction agents

[0057] According to the first aspect, the composition according to the present invention comprises at least one pH correction agent.

[0058] For the purposes of the present invention, the pH correction agent is selected from triethanolamine (TEA), tromethamine base amine, tetrahydroxypropyl ethylenediamine, diethanolamine, aminomethylpropanol, sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium phosphate, sodium gluconate, sodium lactate, sodium citrate, sodium acetate, potassium citrate, sodium bicarbonate, potassium bicarbonate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, sodium carbonate, sodium hydrogen carbonate, magnesium carbonate, calcium carbonate and a combination thereof.

[0059] Preferably, the pH correction agent is chosen from triethanolamine (TEA), tromethamine base amine, tetrahydroxypropyl ethylenediamine, diethanolamine, aminomethylpropanol and a combination thereof.

[0060] Most preferably, the pH correction agent is triethanolamine.

[0061] A person skilled in the art can adjust the amount of pH correcting agent so that the composition has a pH of 4-8, preferably 5-8, more preferably 5-6. Chelating agent

[0062] According to the first aspect, the composition according to the present invention comprises at least one chelating agent.

[0063] Preferably, the chelating agent is chosen from aminocarboxylic acids and their salts.

[0064] The salts are in particular alkali metals, alkaline earth metals, ammonium and substituted ammonium salts.

[0065] The chelating agents can be selected in particular from the compounds bearing the following INCI name:

[0066] diethylenetriaminepentaacetic acid (DTPA),

[0067] ethylenediaminedisuccinic acid (EDDS) et trisodium ethylenediamine disuccinate tels que Octaquest E30 de INNOSPEC ACTIVE CHEMICALS,

[0068] ethylenediaminetetraacetic acid(EDTA),

[0069] ethylenediamine-N, N'-diglutaric acid (EDDG),

[0070] glycinamide-N,N'-disuccinic acid (GADS),

[0071] 2-hydroxypropylenediamine-N,N'-disuccinic acid (HPDDS),

[0072] ethylenediamine-N,N'-bis (ortho-hydroxyphenylacetic acid) (EDDHA),

[0073] N,N'-bis (2-hydroxybenzyl) ethylenediamine-N,N'-diacetic acid (HBED),

[0074] nitrilotriacetic acid (NTA),

[0075] methylglycine diacetic acid (MGDA),

[0076] N-2-hydroxyethyl-N,N-diacetic acid et glyceryl imino diacetic acid (tels que décrits dans les documents EP-A-317 542 and EP-A-399 133),

[0077] iminodiacetic acid-N-2-hydroxypropyl sulfonic acid and aspartic acid N-carboxymethyl N-2-hydroxypropyl-3-sulfonic acid (as described in EP-A-516 102),

[0078] beta-alanine-N,N'-diacetic acid, aspartic acid-N,N'-diacetic acid and aspartic acid-N- monoacetic acid (described in document EP-A-509 382),

[0079] chelating agents based on iminodisuccinic acid (IDSA) (as described in document EP-A-509 382),

[0080] ethanoldiglycine acid, and

[0081] tetrasodium glutamate diacetate (GLDA) such as Dissolvine GL38 or 45S from Akzo Nobel.

[0082] Among the chelating agents mentioned, ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), S,S'-ethylenediaminedisuccinic acid (EDDS), trisodium ethylenediamine disuccinate, ethylenediaminetetramethylenephosphonic acid (EDTMP) and glutamate tetrasodium diacetate (GLDA), and a combination thereof, are preferentially used.

[0083] With the presence of the chelating agent, the composition according to the present invention is stable. It can remain stable for at least two months at different temperatures, for example 4°C, room temperature (25°C), 37°C, 45°C and 55°C.

[0084] Advantageously, the chelating agent is present in an amount ranging from 0.05% by weight to 5% by weight, preferably from 0.1% by weight to 1% by weight, more preferably from 0.15% by weight to 0.6% by weight, relative to the total weight of the composition. Phenolic antioxidants

[0085] According to the first aspect, the composition according to the present invention comprises at least one phenolic antioxidant.

[0086] As phenolic antioxidant, those which have a hindered phenol structure or a semi-hindered phenol structure within the molecule can be mentioned. Specific examples of such compounds include 3,5-bis(1,1-dimethylethyl)-4-hydroxybenzenepropanoic acid, which has the INCI name pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol, mono- or di- or tri-(a-methylbenzyl)phenol, 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 2,2'-methylenebis(4-methyl-6-tert-butylphenol), 4,4'-butylidenebis(3-methyl-6-tert-butylphenol), 4,4'-thiobis(3-methyl-6-tert-butylphenol), 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, tris[N-(3,5-di-tert-butyl-4-hydroxybenzyl)]isocyanurate, l,l,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, butylidene-l,lbis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate octadecyl, tetrakis[methylene-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionato]methane, triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5]undecane, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 2,2-thiodiethylenebis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], N,N'-hexamethylenebis(3,5-di-tert-butyl-4-hydroxyhydrocinnamide), 1,6-hexanediol bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], l,3,5-tris[(4-tert-butyl-3-hydroxy-2,6-xylyl)methyl]-l,3,5-triazine-2,4,6-trione, 2,4-bis(n-octylthio)-6-(4-hydroxy-3,5-di-tert-butylanilino)-l,3,5-triazine, 2-tert-butyl-6-(3'-tert-butyl-5'-methyl-2'-hydroxybenzyl)-4-methylphenyl acrylate, 2-[l-(2-hydroxy-3,5-di-tert-pentylphenyl)ethyl]-4,6-di-tert-pentylphenyl, 4,6-bis[(octylthio)methyl]-o- , cresol, 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate and 1,6-hexanediolbis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate].

[0087] Preferably, the phenolic antioxidant is selected from pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, N,N'-hexamethylenebis(3,5-di-tert-butyl-4-hydroxyhydrocinnamide), and a mixture thereof.

[0088] It has been found that in the presence of a phenolic antioxidant, in particular, pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, the composition according to the present invention can keep its color unchanged at different temperatures from 4°C to 45°C for a long time, for example, at least 2 months.

[0089] Advantageously, the phenolic antioxidant is present in an amount ranging from 0.01% by weight to 1% by weight, preferably from 0.03% by weight to 0.5% by weight, more preferably from 0.05% by weight to 0.2% by weight, relative to the total weight of the composition. Aqueous phase

[0090] The composition of the present invention comprises an aqueous phase.

[0091] The aqueous phase of the composition according to the present invention comprises water and optionally one or more water-miscible or at least partially water-miscible solvents, for example C2 to C8 polyols or monoalcohols, such as ethanol and isopropanol.

[0092] The term "polyol" should be understood to mean any organic molecule comprising at least two free hydroxyl groups. Examples of polyols that may be mentioned include glycerin and glycols, for example butylene glycol, propanediol, propylene glycol, dipropylene glycol, pentylene glycol and isoprene glycol, caprylyl glycol.

[0093] Preferably, the at least one C2-C8 polyol is selected from propanediol, pentylene glycol, dipropylene glycol, glycerin and a combination thereof.

[0094] The aqueous phase may represent an amount ranging from 30% by weight to 97.5% by weight, preferably from 30% by weight to 97% by weight, more preferably from 60% by weight to 97% by weight, relative to the total weight of the composition.

[0095] Preferably, the composition according to the present invention does not comprise an oily phase. Additional cosmetic active ingredients

[0096] Depending on the final objective, the composition according to the present invention may comprise one or more additional cosmetic active ingredients.

[0097] As cosmetic active ingredients which can be used in the composition of the present invention, the examples which can be mentioned include enzymes; flavonoids, anti-aging agents, humectants, tightening agents, soothing agents; and mixtures thereof.

[0098] It is easy for a person skilled in the art to adjust the amount of the additional cosmetic active ingredient based on the end use of the composition according to the present invention. Additional adjuvants or additives

[0099] The composition of the present invention may comprise one or more conventional cosmetic adjuvants or additives, for example, perfumes, surfactants, preservatives (for example, chlorphenesin and phenoxyethanol) and bactericides (for example, hydroxyacetophenone), thickeners (for example, xanthan gum, hydroxyethylcellulose) and mixtures thereof.

[0100] A person skilled in the art can select the amount of additional adjuvants or additives so as not to negatively impact the end use of the composition according to the present invention.

[0101] According to a preferred embodiment, the present invention provides a composition for caring for keratinous materials comprising in an aqueous phase, relative to the total weight of the composition:

[0102] i) from 1% by weight to 4% by weight of magnesium aluminum silicate;

[0103] ii) from 0.3% by weight to 1.5% by weight of salicylic acid;

[0104] iii) at least one pH correction agent;

[0105] (iv) from 0.15% by weight to 0.6% by weight of at least one chelating agent; and

[0106] v) from 0.05% by weight to 0.2% by weight of a phenolic antioxidant selected from pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, N,N'-hexamethylenebis(3,5-di-tert-butyl-4-hydroxyhydrocinnamide), and a mixture thereof.

[0107] The composition according to the present invention can be impregnated into a water-insoluble mask fabric to form a mask.

[0108] According to the second aspect, the present invention relates to a mask for caring for keratinous materials, comprising:

[0109] A) a water-insoluble mask fabric, and

[0110] B) the composition according to the present invention impregnated in the mask fabric. Water-insoluble mask fabric

[0111] According to the second aspect, the mask according to the present invention comprises a water-insoluble mask fabric.

[0112] For the purposes of the invention, the expression "water-insoluble" means that the mask fabric is not soluble in water and that it does not disintegrate upon immersion in water.

[0113] A person skilled in the art can choose a suitable mask fabric and the weight ratio between the mask fabric used and the composition according to the present invention is based on the nature of the composition.

[0114] The mask fabric may be a woven or non-woven fabric made of natural fibers such as cotton, pulp, bamboo and cellulose fibers, semi-natural fibers such as viscose rayon fibers and synthetic fibers such as polyester fibers, polyethylene terephthalate fibers, polyethylene fibers and polypropylene fibers. Two or more fibers selected from the above fibers may be used in combination.

[0115] In some embodiments, the mask fabric is an alginate fabric.

[0116] Alginate fabrics are known in the art and are described in WO2020001069A1.

[0117] For example, an alginate fabric may comprise a water-insoluble alginate selected from calcium alginate, strontium alginate, zinc alginate, copper alginate, manganese alginate, or a mixture thereof, preferably calcium alginate, preferably in an amount ranging from 20% by weight to 100% by weight, preferably from 20% by weight to 50% by weight, relative to the total weight of the fabric.

[0118] Preferably, when the mask fabric is an alginate fabric, the composition according to the present invention comprises a pH correcting agent selected from sodium acetate, sodium citrate, sodium tartrate, and a combination thereof in an amount ranging from 0.01% by weight to 1.0% by weight, preferably from 0.05% by weight to 0.45% by weight, more preferably from 0.15% by weight to 0.3% by weight, relative to the total weight of the composition according to the present invention.

[0119] The mask fabric may consist of one or more layers. If a multi-layer fabric is used, the material of each layer may be the same or different from the others. The multi-layer fabric may be prepared by superimposing multiple layers made of the above-mentioned materials.

[0120] The mask fabric can have a variety of shapes, depending on the desired use and the characteristic of the mask.

[0121] The mask fabric is typically designed to conform to the area of ​​the skin to which topical application is desired. For example, when the mask is applied to the face, the mask fabric is designed to match the shape of the face, avoiding, if necessary, the eye, nostril, and mouth areas.

[0122] Preferably, the weight ratio between the water-insoluble substrate and the composition ranges from 1:3 to 1:20. More preferably, the weight ratio between the water-insoluble substrate and the composition ranges from 1:10 to 1:18. Use

[0123] The mask according to the present invention can be used as a skin mask and is intended for topical application and skin care.

[0124] According to the third aspect, the present invention provides a non-therapeutic process for caring for keratinous materials, comprising the steps of:

[0125] (i) applying the composition or mask according to the present invention to the materials keratinous;

[0126] (ii) allowing the composition or mask to remain on the keratinous materials for a certain time; and

[0127] (iii) removing the composition or mask from the keratinous materials.

[0128] By "used as a skin mask", it can be understood that the composition or mask as defined above is applied to at least one area of ​​the skin.

[0129] In particular, the composition or mask as defined above is applied to the skin of the face and / or to the skin of the eyes.

[0130] Preferably, the application time is from 5 minutes to 45 minutes, preferably from 10 minutes to 30 minutes.

[0131] The following examples serve to illustrate the present invention without, however, being of a limiting nature. EXAMPLES

[0132] The main raw materials used in the examples, the trade names and their suppliers are listed in Table 1.

[0133] [Tables 1] INCI name Trade name Supplier MAGNESIUM ALUMINUM SI LICATE VEEGUM® R VANDERBILT SALICYLIC ACID SALICYLIC ACID JQC (HUAYIN) PH ARMACEUTICAL TRIETHANOL AMINE TRIETHANOLAM INE JIAXING JINYAN CHE MICAL PENTAERYTHRITYL TETRA- DLT-BUTYL HYDROXYHYDRO CINNAMATE TINOGARD® TT BASF ASCORBIC ACID ASCORBIC ACID FINE POWDER DSM NUTRITIONAL PRODUCTS TRISODIUM ETHYLENEDIA MINE DISUCCINATE NATRLQUEST E30 INNOSPEC ACTIVE CHEMICALS

[0134] Fabric used: 100% copper ammonia fiber, thickness 0.3 mm, available under the trade name SE384 from Asahi-Kasei.

[0135] Comparative Examples 1 to 3 and Inventive Examples 1 to 3

[0136] The compositions of Comparative Examples (EC.) 1-3 and Inventive Examples (EI.) 1 to 3 were prepared according to the amounts given in Table 2. The amount of each component is given in % by weight of the total weight of the composition containing it.

[0137] [Tables2] Components El. 1 EL 2 EI.3 EC.l EC. 2 EC.3 Magnesium aluminum silicate 2 2 2 2 2 2 Salicylic acid 1 1 1 1 1 1 Triethanolamine 0.88 0.88 0.97 0.88 0.88 0.88 Pentaerythr ityl tetra-di-t-butyl hydroxyhydrocinnamate 0.1 0.2 0.1 - - - Ascorbic acid - - 0.1 0.2 - Trisodium ethylenediamine disuccinate 0.6 0.6 0.3 0.6 0.6 0.6 Water QS100 QS100 QS100 QS100 QS100 QS100 PH 5.7 5.7 5.7 5.7 5.7 5.7

[0138] Preparation process:

[0139] The compositions listed above were prepared by mixing all the ingredients and stirring them to obtain a homogeneous mixture.

[0140] The masks were prepared by impregnating a fabric with the above compositions, respectively, wherein the weight ratio of the substrate used to the composition is 1:17. Assessment

[0141] The stability of the compositions obtained above was evaluated in terms of viscosity, pH and appearance at 4°C, room temperature (25°C), 37°C, 45°C and 55°C as follows. Viscosity

[0142] The viscosity of a composition was measured at 25°C during preparation, and after remaining at 25°C or 45°C for a certain time, using a Rheomat 100 Plus viscometer equipped with an M2 spindle, the measurement being carried out after 10 minutes of spindle rotation in a composition (time after which stabilization of viscosity and spindle rotation speed is observed), at a shear rate of 200 revolutions per minute. pH value

[0143] The pH value of a composition was measured at 25°C during preparation and after remaining at 25°C or 45°C for a certain time. Appearance

[0144] The appearance of the samples was observed when their temperature reached the indicated temperature (T0), 1 month after their temperature reached the indicated temperature (T1M), and 2 months after their temperature reached the indicated temperature (T2M).

[0145] The appearance will be evaluated as compliant if its appearance does not change compared to its appearance at T0.

[0146] The results in terms of appearance, pH and viscosity of the compositions according to comparative examples and inventive examples have been listed in Table 3.

[0147] [Tables3] Property Stability Condition TO T1M T2M ELI Appearance 4°C - Off-white Off-white Appearance RT(25°C) Off-white Off-white Off-white PH 5.7 5.9 6 Viscosity 40 47 50 Appearance 37°C - Off-white Off-white Appearance 45°C - Off-white Off-white PH - 6.1 5.7 Viscosity - 50 50 Appearance 55°C - Off-white Off-white EI.2 Appearance 4°C - Off-white Off-white Appearance RT(25°C) Off-white Off-white Off-white PH 5.7 5.6 5.5 Viscosity 36 44 43 Appearance 37°C - Off-white Off-white Appearance 45°C - Off-white Off-white PH - 5.6 5.5 Viscosity - 38 35 Appearance 55°C - Off-white Off-white EI.3 Appearance 4°C - White Off-white Off-white Appearance RT(25°C) Off-white Off-white Off-white PH 5.7 5.9 5.9 Viscosity 36 44 43 Appearance 37°C - Off-white Off-white Appearance 45°C - Off-white Off-white PH - 5.8 5.7 Viscosity - 44 37 Appearance 55°C - Off-white Off-white EC.l Appearance 4°C - Off-white Off-white Appearance RT(25°C) Off-white Off-white Off-white PH 5.7 5.6 5.5 Viscosity 36 44 43 Appearance 37°C - Off-white Off-white Appearance 45°C - yellowish yellowish PH - 5.6 5.5 Viscosity - 38 35 Appearance 55°C - yellowish yellowish EC.2 Appearance 4°C - Off-white Off-white Appearance RT(25°C) Off-white Off-white Off-white PH 5.7 5.6 5.5 Viscosity 36 44 43 Appearance 37°C - Off-white yellowish Appearance 45°C - yellowish yellowish PH - 5.6 5.5 Viscosity - 38 35 Appearance 55°C - yellowish yellowish EC.3 Appearance 4°C - Pinkish Pinkish Appearance RT(25°C) Pinkish Pinkish Pinkish PH 5.7 5.6 5.5 Viscosity 36 44 43 Appearance 37°C - Pinkish Pinkish Appearance 45°C - Pinkish Pinkish PH - 5.6 5.5 Viscosity - 38 35 Appearance 55°C - Pinkish Pinkish PH - 5.7 5.7 Viscosity - 38 38

[0148] It can also be seen from Table 3 that the appearance, viscosity and pH values ​​of the compositions according to the present invention did not change significantly after have remained at 4°C, 25°C, 37°C, 45°C and / or 55°C for a certain time, thus the composition according to the present invention is stable.

Claims

Claims

1. Composition, comprising, in an aqueous phase, relative to the total weight of the composition: i) from 1% by weight to 4% by weight of magnesium aluminum silicate; ii) from 0.3% by weight to 1.5% by weight of salicylic acid; iii) at least one pH correcting agent; iv) from 0.15% by weight to 0.6% by weight of at least one chelating agent; and v) from 0.05% by weight to 0.2% by weight of a phenolic antioxidant selected from pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, N,N'-hexamethylenebis(3,5-di-tert-butyl-4-hydroxyhydrocinnamide), and a mixture thereof.

2. The composition of claim 1, wherein the pH correcting agent is selected from triethanolamine (TEA), tromethamine amine base, tetrahydroxypropyl ethylenediamine, diethanolamine, aminomethylpropanol, sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium phosphate, sodium gluconate, sodium lactate, sodium citrate, sodium acetate, potassium citrate, sodium bicarbonate, potassium bicarbonate, potassium bicarbonate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, sodium carbonate, sodium hydrogen phosphate, magnesium carbonate, calcium carbonate and a combination thereof, preferably the pH correcting agent is selected from triethanolamine (TEA), tromethamine amine base, tetrahydroxypropyl ethylenediamine, diethanolamine, aminomethyl propanol, and a combination of these,more preferably, the pH correction agent is triethanolamine.,

3. A composition according to claim 1 or 2, wherein the chelating agent is selected from diethylenetriaminepentaacetic acid (DTPA), ethylenediaminedisuccinic acid (EDDS), trisodium diethylenediamine disuccinate, ethylenediaminetetraacetic acid (EDTA), ethylenediamine-N,N'-diglutaric acid (EDDG), glycinamide-N,N'-disuccinic acid (GADS), 2- hydroxypropyleneiamine-N,N'-disuccinic acid (HPDDS), ethylenediamine-N,N'-bis (orthohydroxyphenylacetic acid) (EDDHA), N,N'-bis(2-hydroxybenzyl) ethylenediamine-N,N'-diacetic acid (HBED), nitrilotriacetic acid (NTA), methylglycine-diacetic acid (MGDA), N-2-hydroxyethyl-N,N-diacetic acid, glyceryliminodiacetic acid, iminodiacetic acid-N-2-hydroxypropyl sulfonic acid, aspartic acid N-carboxy methyl N-2-hydroxypropyl-3-sulfonic acid, beta-alanine-N-N'diacetic acid, aspartic acid-N-,N'-diacetic acid, aspartic acid-N-onoacetic acid, acid-based chelating agents iminodisuccinic acid (IDSA), ethanoldiglycine acid, and tetrasodium glutamate diacetate (GLDA), preferably the chelating agent is selected from ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), S,S'-ethylenediaminedisuccinic acid (EDDS), trisodium ethylenediamine disuccinate,ethylenediaminetetramethylenephosphonic acid (EDTMP) and tetrasodium glutamate diacetate (GLDA), and a combination thereof.

4. A care mask for keratinous materials, comprising in an aqueous phase: A) a water-insoluble mask fabric, and B) the composition according to any one of claims 1 to 3, impregnated in the mask fabric.

5. A non-therapeutic process for caring for keratinous materials, comprising the steps of: (i) applying the composition according to any one of claims 1-3 or the mask according to claim 4 to the keratinous materials; (ii) allowing the composition or mask to remain on the keratinous materials for a period of time; and (iii) removing the composition or mask from the keratinous materials.