FR3134008A1 - Composition for the care of keratinous material - Google Patents

Abstract

Composition for the care of a keratinous material The invention relates to a combined composition in dry form, comprising I) a tissue composition I) in dry form; and II) a functional composition II) in dry form, comprising a gelling agent, in which the components of the functional composition II) are distributed uniformly in the substrate Figure for abstract: NIL

Description

composition for the care of A keratinous material

The present invention relates to a composition in the cosmetic field, in particular a composition for the care of keratinous materials, in particular the skin, for example the face, in particular a composition useful for a mask type product. Furthermore, the present invention relates to its use, in particular as a mask-type product for the care of keratinous materials, in particular the skin.

CONTEXT

The ultimate goal of the cosmetics industry has always been to deliver highly effective products to consumers with benefits for the skin, such as hydration, whitening, cleansing, etc.

Among all the care products for keratinous materials, in particular for the skin, masks are known to have great penetration efficiency on keratinous materials.

Generally, there are four types of masks, namely paste type, peel-off type, gel type and wet tissue type. Among these, paste-type masks and peel-off masks are mainly used for cleaning keratinous materials, while gel-type masks and wet tissue-type masks are more often used for skin care. It is known that a gel-type mask has good adhesion to the skin and can provide a good feeling of freshness, but may be insufficient to deliver a hydration effect to the skin, while a damp cloth-type mask is good at delivering a hydrating effect, but will regain it if applied for a prolonged period.

In recent years, the dry mask has been developed. Particularly, the essence and other active agents as well as auxiliary agents are formulated into a homogeneous or pseudo-homogeneous system, such as a solution, emulsion, dispersion and the like, distributed uniformly on a fabric and then dried to offer a dry mask. Immediately before application, users can immerse the dry mask in water, such as distilled water, pure water, to obtain a mask for use. However, due to the fibers used in the fabric and their compatibility with the juice, the level of water absorption, the nourishing effect of the juice and the softness of the mask are insufficient.

There is always a need for a new type of mask, which incorporates two or more of the merits exhibited by known types of masks, but which does not suffer from one or more problems associated with them.

An object of the present invention is to propose a tissue composition I) useful in a cosmetic product for the care of the skin, in particular of the face, to obtain good water absorption and softness.

Another object of the present invention is to provide a combined composition in dry form comprising a plurality of compositions, including fabric composition I), which allows users to apply fabric composition I) to a mask by fresh mixing .

Accordingly, one aspect of the present invention is to provide a tissue composition I) comprising a water-insoluble substrate comprising at least 20% by weight of regenerated cellulose fibers having a fiber diameter of 0.9 denier or less. Preferably, the tissue composition I is in dry form without essence, juice or any other impregnating agent.

Another aspect of the present invention is to provide a combined composition in dry form, comprising compositions of:

I) tissue composition I) in dry form; And

II) a functional composition II) in dry form, comprising a gelling agent,

in which the components of functional composition II) are uniformly distributed in the substrate.

Other advantages of the present invention will appear more clearly on reading the description and examples which follow.

embodiments of the invention

Throughout the description, including in the claims, the expression “comprising one” must be understood as being synonymous with “comprising at least one”, unless otherwise stated. In addition, the expression “at least one” used in the present description is equivalent to the expression “one or more”.

Preferably, the “keratinous material” according to the present invention is skin. By “skin” we mean all the skin on the body. More preferably, the keratinous material is the face, or the neck, in particular the face.

Preferably, the "dry form" for compositions I) and II), the combined composition, and where appropriate, the others, according to the present invention has the meaning well known in the art, and can be determined by the skilled in the art in a dry form or not.

In the application, unless specifically stated otherwise, the quantities, contents, parts and percentages are expressed on a weight basis.

In the application, a numerical range is defined with a lower limit and an upper limit if necessary, as one or more lower limits and one or more upper limits are given to form a range optionally with one or more preferred ranges. A given range can be defined by selecting a lower limit and an upper limit which define the limits of the given range. All ranges defined in this way are inclusive and combinable, that is, any lower limit can be combined with any upper limit to form a range, provided that both lower and upper limits are provided to modify the same subject . For example, when ranges of 60 to 110 and 80 to 120 are stated for a specific subject, it should be understood that ranges 60 to 120 and 80 to 110 are also considered and encompassed. Additionally, if the lower limits shown are 1 and 2 and the upper limits are 3, 4 and 5, the following ranges are all predictable and within the scope of this disclosure: 1 to 3, 1 to 4, 1 to 5 , 2 to 3, 2 to 4 and 2 to 5.

Apart from operating examples, or where otherwise indicated, all numbers expressing component quantities and/or reaction conditions shall be understood to be modified in all cases by the term "approximately", with the meaning conventionally known in the art, for example, within 10% of the number indicated (such as "about 10%" means 9% to 11% and "about 2%" means 1.8% to 2.2%).

The present invention provides a combined composition in dry form comprising the compositions of: I) a tissue composition and II) a functional composition.

Composition I), tissue composition

The tissue composition I) according to the invention comprises a water-insoluble substrate comprising at least 20% by weight of regenerated cellulose fibers having a fiber diameter of 0.9 denier or less.

Substrate insoluble in water

For the purposes of the present invention, the term "insoluble in water" means that the substrate cannot dissolve, i.e. it has a solubility of less than 0.01 g/100 g d water or that it is only slightly soluble, that is to say that it has a solubility less than 0.5 g/100 g of water, and that it does not disintegrate when it is immersed or soaked in water.

Typically, the substrate may be a woven or non-woven fabric/fabric made from fibers selected from the group consisting of natural fibers such as cotton, paper pulp, bamboo and cellulose fibers, semi-natural fibers such as rayon fibers of viscose, charcoal viscose fibers, bamboo charcoal viscose fibers, synthetic fibers such as polyester fibers, poly(ethylene terephthalate) fibers, polyethylene fibers, polypropylene fibers, or a mixture thereof this. The fibers may preferably be cellulose fibers.

The substrate can be made in a wide variety of shapes and appearances such as flat pads, thick pads, thin sheets of irregular thickness, depending on the desired use and the characteristics of the combined composition in dry form. . By way of example only, the substrate is typically designed to conform to the skin area in the case of a mask to which topical application is desired. To this end, when the mask is applied to the face, the substrate is designed to match the shape of the face avoiding the eye, nostril and mouth areas where applicable. Non-limiting examples of substrates useful in the present invention are described, for example, in patent application WO 02/062132, or EP 2489286A.

It is essential that the substrate comprises a regenerated cellulose fiber. The term "regenerated cellulose fiber" is known in the art, and generally represents a fiber processed from a natural fiber. Examples of regenerated cellulose fibers include viscose, modal, lyocell, cupro, and the like.

Fibers typically used in masks and other cosmetic applications may have a fiber diameter of 1.5 denier or greater. The denier is known to represent a weight in grams per 9 km of length of wire.

Without being limited by any theory, it is believed that, in the context of the present invention, it is highly beneficial to use a regenerated cellulose fiber having a diameter of 0.9 denier or less, referred to as a "fine" regenerated cellulose fiber. » (or component A), in particular for water absorption and/or the softness of the substrate. The fine regenerated cellulose fiber/component A may preferably have a fiber diameter of 0.6 denier or less, and/or a fiber diameter of 0.3 denier or more.

The fine regenerated cellulose fiber may be present in an amount ranging for example from 20% to 100% by weight, preferably from 50% or more to 100% by weight, relative to the total weight of the substrate of tissue composition I) . According to an exemplary embodiment, the fine regenerated cellulose fibers constitute 100% by weight of the substrate of the tissue composition I), that is to say that the substrate consists of the fine regenerated cellulose fibers, without a significantly significant quantity any other fiber.

The substrate of tissue composition I) may therefore comprise additional fibers, called component B, other than fine regenerated cellulose fibers. According to a specific embodiment, the additional fiber may also be a regenerated cellulose fiber, but having a fiber diameter greater than that of the fine regenerated cellulose fiber, for example, having a fiber diameter of 1.0 denier or more, or 1.5 denier or more.

Correspondingly, the additional fiber/component B may be present in an amount of, for example, 0% to 80% by weight, preferably 0% or more to 50% by weight, based on the total weight. of the substrate of tissue composition I).

The water-insoluble substrate may be present in an amount ranging for example from 50% to 100% by weight, preferably from 80% or more to 100% by weight, relative to the total weight of the substrate of tissue composition I ).

Other component C

In addition to the water-insoluble substrate, the tissue composition I) according to the present invention may comprise any other component C useful for a mask, including, without limitation, the components of composition II) which will be discussed later, as long as the presence of the other component(s) makes it possible to maintain the tissue composition I) in a dry form. Preferably, the other component, when present, is uniformly distributed in the water-insoluble substrate.

In particular, the tissue composition I) may comprise a superabsorbent material, to absorb liquids.

Superabsorbent material

According to one embodiment of the present invention, the tissue composition I) may comprise at least one superabsorbent material as component C.

In particular, the at least one superabsorbent material may be present in the form of powder, particles, fibers or in bulk.

The superabsorbent material advantageously has a very high capacity for absorbing a liquid, and in particular water. In particular, it may have the capacity to absorb 15 times, or even 20 times to 50 times its own weight in water, for example approximately 25 times to 30 times.

The ability of the superabsorbent material to absorb liquid can be determined by carrying out the following method.

A sample of the superabsorbent material in the form of powder, fiber or bulk, or arranged in the form of a film or sheet, is weighed in the dry state (M _D ). For example, it is possible to use a non-woven square strip having a side of approximately 1 centimeter (cm). In the context of the present process, the superabsorbent material is obtained in the “dry” state by being treated in an oven for approximately 4 hours (h) at approximately 50°C.

Water (or any other liquid that must be absorbed by the material) is brought into contact with the material. This can be done either by immersing the material in the liquid or by pouring the liquid onto the material. For example, the material can be immersed for a duration of approximately 1 minute (min).

The amount of water (or liquid) is used in excess so as to completely saturate the material, for example. Excess water (or liquid) is then removed, for example by drain drying for approximately 2 min, and the liquid-saturated material is weighed ( _ML ).

The difference Δ between the weight of the material saturated in liquid and the weight of the dry material represents the quantity of liquid it has absorbed, weight which is compared to the dry weight of the material. The resulting value C is indicative of the capacity of the superabsorbent material to absorb liquid, for example expressed in grams of liquid absorbed per gram of dry material:

The superabsorbent material may be selected from cellulose derivatives, alginates (not including water-insoluble alginates and alkaline metal algin compounds described herein as a water-soluble gelatinizing agent ) and derivatives thereof, in particular derivatives such as propylene glycol alginate or salts thereof, derivatives of polyacrylic acid or polymethacrylic acid, derivatives of poly(meth) acrylamide, polyvinylpyrrolidone derivatives, polyvinyl ether derivatives, and mixtures thereof, among others.

In particular, the superabsorbent material can be chosen from chemically modified cellulose derivatives. For example, it may be chosen from carboxymethyl cellulose, sodium carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, carboxyethyl cellulose, hydroxyethyl ethyl cellulose, hydroxypropylmethyl cellulose, methyl cellulose, sodium methyl cellulose, microcrystalline cellulose, sodium cellulose sulfate and mixtures thereof .

It can also be chosen from alkyl celluloses. These polymers are obtained by grafting an alkyl residue onto one or more hydroxy groups of the cellulose polymer to form the hydroxyalkyl derivative. These alkyl residues may be chosen from the following groups: stearyl, isostearyl, lauryl, myristyl, cetyl, isocetyl, cocoyl, palmityl, oleyl, linonyl, ricinolyl, behenyl, and mixtures thereof. These hydroxyalkyl cellulose derivatives can also be subjected to chemical modification, for example using a carboxylic residue.

In particular, the tissue composition I) of the present invention may comprise at least one superabsorbent material at a content ranging from 0% to 50% by weight, in particular from 0% to 20% by weight, relative to the total weight of tissue composition I).

Tissue composition I) is in dry form, so that no water is intentionally introduced during its preparation.

According to one embodiment of the invention, the tissue composition I) may preferably have a basis weight of 25 to 100 g/m ² , the preferred range being 30 to 60 g/m ² or 40 to 55 g /m ² .

Composition II), functional composition

A functional composition is preferably used as composition II) to be combined with tissue composition I) to provide the combined composition in dry form according to the present invention.

According to one embodiment of the invention, the functional composition II) can provide cosmetic functions or functions favoring the formulation of the combined composition in dry form.

Hydrophilic gelling agent

Depending on the end use of the combined composition in dry form, for example a facial mask, the functional composition II) according to the present invention may optionally comprise at least one hydrophilic gelling agent, as component D.

For the purposes of the present invention, the term “hydrophilic gelling agent” designates a compound capable of gelling an aqueous phase.

The gelling agent may be water soluble or water dispersible.

More specifically, the hydrophilic gelling agent may be chosen from synthetic polymeric gelling agents, natural polymeric gelling agents of natural origin, or a mixture of these.

Synthetic polymeric gelling agents

In the context of the present invention, the term "synthetic" means that the polymer is neither natural nor a derivative of a polymer of natural origin.

More precisely, these polymers can be chosen in particular from:

carboxyvinyl polymers modified or not, such as products sold under the name Carbopol ^® (CTFA name: Carbomer) by the company Goodrich; polyacrylates, polymethacrylates such as the products sold under the names Lubrajel™ and Norgel by the company Guardian or under the name Hispagel ^® by the company Hispano Chimica; polyacrylamides; polymers and copolymers of 2-acrylamido-2-methylpropanesulfonic acid optionally crosslinked and/or neutralized, for example poly(2-acrylamido-2-methylpropanesulfonic acid) sold by the company Clariant under the name Hostacerin AMPS ^® (CTFA name : ammonium polyacryldimethyltauramide); crosslinked anionic copolymers of acrylamide and AMPS ^® , which are in the form of a W/O emulsion, such as those sold under the name Sepigel™ 305 (CTFA name: Polyacrylamide/C _13-14 isoparaffin/ Laureth-7) and under the name Simulgel™ 600 (CTFA name: Acrylamide/Sodium acryloyldimethyltaurate copolymer/Isohexadecane/Polysorbate 80) by the company SEPPIC; and mixtures thereof.

Preferably, these polymers can be chosen from crosslinked C _10-30 alkyl acrylate/acrylate polymer such as Carbopol ^® ultrez 20, Carbopol ^® ultrez 21, Permulen™ TR-1, Permulen™ TR-2, Carbopol ^® 1382, Carbopol ^® ETD 2020, carbomer such as Synthalen ^® K, Carbopol ^® 980, acryloyldimethyl ammonium taurate/steareth-8 methacrylate copolymer such as Aristoflex ^® SNC, acrylate copolymer such as Carbopol ^® Aqua SF- 1, cross-linked polymer of acryloyldimethyl ammonium taurate/steareth-25 methacrylate such as Aristoflex ^® HMS, acryloyldimethyl ammonium taurate such as Aristoflex ^® AVC.

Preferably, these polymers can be chosen from carboxyvinyl polymers such as the Carbopol ^® products (carbomers) such as the Carbopol ^® Ultrez 20 polymer marketed by Lubrizol and the Pemulen products (acrylate/C _10-30 alkyl acrylate copolymer ) ; polyacrylamides, for example crosslinked copolymers marketed under the brands Sepigel™ 305 (CTFA name: polyacrylamide/C _13-14 isoparaffin/Laureth-7) or Simulgel™ 600 (CTFA name: acrylamide/sodium acryloyldimethyltaurate copolymer/isohexadecane/polysorbate 80) from SEPPIC; polymers and copolymers of 2-acrylamido-2-methylpropanesulfonic acid, optionally crosslinked and/or neutralized, for example poly(2-acrylamido-2-methylpropanesulfonic acid) marketed by Hoechst under the brand Hostacerin AMPS ^® (CTFA name: ammonium polyacryloyldimethyltaurate) or Simulgel™ 800 marketed by SEPPIC (CTFA name: sodium polyacryloyldimethyltaurate/polysorbate 80/sorbitan oleate); copolymers of 2-acrylamido-2-methylpropanesulfonic acid and hydroxyethyl acrylate, for example Simulgel™ NS and Sepinov EMT 10 marketed by SEPPIC; and mixtures thereof.

Preferably, these polymers can be chosen from glyceryl acrylate/acrylic acid copolymers available from ISP Technologies, Inc. (United Guardian Inc.) under the brand Lubrajel™, in particular the form known under the name Lubrajel™ oil which contains approximately 1.0% to 1.3% glyceryl acrylate/acrylic acid copolymer in aqueous glycerin (approximately 40% glycerin). Lubrajel™ oil also includes approximately 0.6% PVM/MA copolymer (also known as methoxyethylene/maleic anhydride copolymer).

Agents g polymeric elifiers natural or of natural origin

In the context of the present invention, the term “natural origin” aims to designate polymeric gelling agents obtained by modification of natural polymeric gelling agents.

More specifically, these gelling agents fall into the category of polysaccharides.

In general, polysaccharides suitable for the present invention may be homopolysaccharides such as fructans, glucans, galactans and mannans or heteropolysaccharides such as hemicellulose.

Likewise, they can be linear polysaccharides like pullulan or branched polysaccharides like gum arabic and amylopectin, or mixed polysaccharides like starch.

In general, the polysaccharides can be chosen from those produced by microorganisms, polysaccharides isolated from algae and polysaccharides from higher plants, such as homogeneous polysaccharides, in particular celluloses and derivatives thereof or fructans. , heterogeneous polysaccharides such as gum arabic, galactomannans, glucomannans and derivatives thereof, and mixtures thereof.

In particular, the polysaccharides may be chosen from fructans, gellans, glucans, amylose, amylopectin, glycogen, pullulan, dextrans, celluloses and derivatives thereof, in particular methyl celluloses, hydroxyalkyl celluloses, ethylhydroxyethyl celluloses and carboxymethyl celluloses, mannans, xylans, lignins, arabans, galactans, galacturonans, chitin, chitosans, glucuronoxylans, arabinoxylans, xyloglucans, glucomannans, arabinogalactans, glycosaminoglucans, arable gums, tragacanth gums, ghatti gums, locust bean gums, galactomannans such as guar gums and non-derivatives ionic compounds thereof, in particular hydroxypropyl guar, and ionic derivatives thereof, biopolysaccharide gums of microbial origin, in particular scleroglucan or xanthan gums, mucopolysaccharides, and in particular chondroitin sulfates, and mixtures thereof. These polysaccharides can be chemically modified, in particular by urea or urethane groups or by a reaction of hydrolysis, oxidation, esterification, etherification, sulfation, phosphatation, amination, amidation or alkylation, or by several of these modifications.

The derivatives obtained can be anionic, cationic, amphoteric or non-ionic.

Advantageously, the polysaccharides can be chosen from xanthan gum, scleroglucan gum, guar gum, inulin and pullulan, and mixtures thereof.

In general, the compounds of this type which can be used in the present invention are chosen from those described in particular in Kirk-Othmer's Encyclopedia of Chemical Technology, third edition, 1982, volume 3, pages 896 to 900, and volume 15, pages 439 to 458, in Polymers in Nature by E.A. MacGregor and C.T. Greenwood, published by John Wiley & Sons, chapter 6, pages 240-328, 1980, in Robert L. Davidson's Handbook of Water-Soluble Gums and Resins published by McGraw Hill Book Company (1980) and in Industrial Gums - Polysaccharides and their Derivatives, edited by Roy L. Whistler, second edition, published by Academic Press Inc.

More specifically, those polysaccharides suitable for use in the present invention can be distinguished depending on whether they are derived from microorganisms, algae or higher plants, and are detailed below.

Polysaccharides derived from microorganisms Xanthan

Xanthan is a heteropolysaccharide produced on an industrial scale by the aerobic fermentation of the bacterium Xanthomonas campestris . Its structure consists of a main chain of β-D-glucoses linked in β(1,4), similar to that of cellulose. Every second glucose molecule carries a trisaccharide side chain composed of an α-D-mannose, a β-D-glucuronic acid and a terminal β-D-mannose. The internal mannose residue is generally acetylated at carbon 6. Approximately 30% of terminal mannose residues carry a pyruvate group bound in chelated form between carbons 4 and 6. Charged pyruvic and glucuronic acids are ionizable, and are therefore responsible for the anionic nature of xanthan (negative charge up to a pH equal to 1). The content of pyruvate and acetate residues varies depending on the bacterial strain, fermentation process, post-fermentation conditions and purification steps. These groups can be neutralized in commercial products with Na ⁺ , K ⁺ or Ca ²⁺ ions (Satia company, 1986). The neutralized form can be converted to the acidic form by ion exchange or by dialysis of an acidic solution.

Xanthan gums have a molecular weight of between 1,000,000 and 50,000,000 and a viscosity of between 0.6 and 1.65 Pa.s for an aqueous composition containing 1% xanthan gum (measured at 25°C on a Brookfield LVT type viscometer at 60 rpm).

Xanthan gums are represented, for example, by products sold under the names of Rhodicare by the company Rhodia Chimie, under the name of Satiaxane™ by the company Cargill Texturizing Solutions (for the food, cosmetics and pharmaceutical industries), under the name name of Novaxan™ by the company ADM, and under the names of Kelzan ^® and Keltrol ^® by the company CP-Kelco.

Pullulan

Pullulan is a polysaccharide consisting of maltotriose units, known as α(1,4)-α(1,6)-glucan. Three glucose units in maltotriose are connected by an α(1,4) glycosidic bond, while consecutive maltotriose units are connected together by an α(1,6) glycosidic bond.

Pullulan is produced, for example, under the reference Pullulan PF 20 by the Hayashibara group in Japan.

Dextran and dextran sulfate

Dextran is a neutral polysaccharide carrying no charged groups, biologically inert, prepared by fermentation of beet sugar containing only hydroxy groups. It is possible to obtain dextran fractions of different molecular weights from native dextran by hydrolysis and purification. Dextran can in particular be in the form of dextran sulfate.

Dextran is represented, for example, by products sold under the name Dextran or Dextran T by the company Pharmacosmos, or under the name Dextran 40 Powder or Dextran 70 Powder by the company Meito Sangyo Co. Dextran sulfate is sold by the company PK Chemical A/S under the name Dextran sulfate.

Succinoglycan

Succinoglycan is a high molecular weight extracellular polymer produced by bacterial fermentation, consisting of repeating units of octasaccharides (repeat of 8 sugars). Succinoglycans are sold, for example, under the name Rheozan by the company Rhodia.

Scleroglucan

Scleroglucan is a nonionic branched homopolysaccharide consisting of β-D-glucan units. The molecules consist of a linear main chain made up of D-glucose units linked by β(1,3) bonds and one in three of which is linked to a side D-glucose unit by a β(1,6) linkage. .

A more complete description of scleroglucans and their preparation can be found in US Patent 3,301,848.

Scleroglucan is marketed, for example, under the name Amigel by the company Alban Miiller, or under the name Actigum™ CS by the company Cargill.

The gelling agent/component D may be present in an amount ranging for example from 1 to 30% by weight, preferably from 5 to 20% by weight, relative to the total weight of the functional composition II).

Polyol

The functional composition II) according to the present invention may optionally comprise a polyol as component E, which is liquid at room temperature (25°C.).

The polyol useful as component E is preferably chosen in particular from polyols having in particular from 2 to 20 carbon atoms, preferably having from 2 to 10 carbon atoms, and preferably having from 2 to 6 carbon atoms, such as as glycerin, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, dipropylene glycol, and diethylene glycol.

According to an exemplary embodiment of the invention, the polyol may have at least two adjacent hydroxyl groups, for example ethylene glycol, 1,2-propylene glycol or glycerin.

The polyol/component E may be present in an amount of 40 to 80% by weight, preferably 50 to 70%, relative to the total weight of functional composition II).

Sugar

The functional composition II) according to the present invention may optionally comprise a sugar as component F.

The sugar useful as component F is based on mono- or oligo-saccharides. In particular, the sugar may be trehalose, sucrose, mannose, lactose, glucose, dextrose, maltose, fructose, disaccharides, trisaccharides, tetrasaccharides, pentasaccharides, hexasaccharides and higher oligosaccharides or sweet materials, or mixtures thereof. Preferably, the sugar according to the present invention does not include polysaccharides.

In one embodiment, the sugar as component F is selected from the group consisting of maltose, sucrose, mannose, trehalose or a mixture thereof.

The sugar/component F can be present in an amount ranging for example from 10 to 50% by weight, preferably from 20 to 40% by weight, relative to the total weight of the functional composition II).

Water and composition II’)

In order to obtain composition II) and in particular to uniformly distribute the components of composition II) in the substrate of composition I), a composition II') can be previously formulated. Compared to functional composition II), composition II') is substantially the same, with the exception of the inclusion of a medium/solvent, in particular water.

Composition II') according to the invention can advantageously comprise water in different quantities. The quantity of water used can be specific so that:

The at least one gelling agent/hydrophilic component D may be present in an amount ranging for example from 0.01 to 5% by weight, preferably from 0.1 to 2% by weight and more preferably from 0.5 at 1% by weight relative to the total weight of the functional composition II');

The polyol/component E may be present in an amount of 1% to 20% by weight, or 2% to 10% by weight, or 4% to 8% by weight, relative to the total weight of functional composition II '); and or

The sugar/component F can be present in a range ranging for example from 0.1 to 5% by weight, preferably from 0.5 to 2.5% by weight, relative to the total weight of the functional composition II') .

Active Agents

According to one embodiment of the present invention, the tissue composition I) may comprise at least one active agent.

According to one embodiment of the present invention, tissue composition II) and therefore composition II’) may comprise at least one active agent.

Among all the active agents which can be used in the context of the present invention, mention may in particular be made of: α- or β-hydroxy acids such as lactic acid, glycolic acid, citric acid, 5-octanoylsalicyclic acid, α acid -hydroxydecanoic, α-hydroxylauric acid, tartaric acid, glucuronic acid, galacturonic acid, acrylic acid, α-hydroxybutyric acid, α-hydroxyisobutyric acid, malic acid, mandelic acid, phosphoric acid, pyruvic acid, lactobionic acid and salicylic acid.

It is also possible to use anti-acne agents, such as salicylic acid or benzoyl peroxide, octopirox, dextrorotatory and levorotatory sulfur amino acids, their salts, and their N-acetylated derivatives such as N-acetyl cysteine, or agents seeking to prevent aging of the skin and/or to improve its condition, for example the aforementioned α- and β-hydroxy acids, retinoids such as retinoic acid, retinol, and its esters, such as, for example, retinyl propionate, and retinyl acetate, or retinyl palmitate, niacinamide, Allantoin, aloe extracts, azelaic acid, bisabolol, phytic acid, collagen, or agents stimulating the formation of collagen, vitamins such as vitamin C or derivatives thereof, such as ascorbyl glucoside, vitamin E or derivatives thereof, vitamin A or derivatives thereof, vitamin F or derivatives thereof, dextrorotatory and levorotatory sulfur amino acids and derivatives thereof as mentioned above, elastin, N-acetyl D-glucosamine, luteolin, or antioxidants such as green tea or active fractions thereof, glycerin, laponite, caffeine, essential oils aromatics, coloring agents, free radical scavengers, moisturizing agents, depigmenting agents, skin color improving agents such as artificial tanning agents of the dihydroxyacetone or tyrosine ester type, liporegulators, softeners, anti-wrinkle agents, keratolytic agents, refreshing agents, deodorants, anesthetics, nourishing agents and mixtures thereof. It is also possible to use bleaching agents such as kojic acid, ascorbyl phosphates, ascorbyl glycosides, ascorbic acid and mixtures thereof.

It is also possible to use active agents to improve the condition of the skin in the case of a mask, such as moisturizing agents or agents serving to improve the natural lipid barrier, such as ceramides, cholesterol sulfates and /or fatty acids, and mixtures thereof. It is also possible to use enzymes with activity on the skin, such as proteases, lipases, cerebrosidases and/or melanases, and mixtures thereof.

As other examples of active agents which may be suitable for the implementation of the present invention, mention may be made of medicinal agents, peptides, proteins, detectable markers, contrast reagents, painkillers, anesthetics, antibacterial agents, antiyeast agents, antifungal agents, antiviral agents, antidermatitis agents, antipruritic agents, antiemetics, vascular protectants, motion sickness agents, anti-irritants, anti-inflammatory agents, immunomodulators, antihyperkeratolytic agents, agents for the treatment of dry skin, antiperspirants, antipsoriatic agents, agents antidandruff, antiaging agents, antiasthmatic and bronchodilatory agents, sunscreen agents, antihistamines, wound healing agents, corticosteroids, tanning agents and mixtures thereof.

The content of the at least one active agent in the tissue composition I) and/or in the tissue composition II) can be adjusted according to the intended use of the kit.

Process of combining functional composition II) with tissue composition I)

The combined composition in dry form of the present invention is obtained by combining the functional composition II) with the tissue composition I), in particular by incorporating the components of the functional composition II) into the substrate of the tissue composition I). The process of combining functional composition II) with tissue composition I) is not specifically limited, as long as the components of functional composition II) can be uniformly distributed in the substrate.

According to one embodiment, the components of functional composition II) are prepared in an aqueous solution, that is to say composition II'). Then, composition II’) is loaded onto the substrate of tissue composition I).

According to another embodiment, the components of the functional composition II) are prepared in the form of a suspension or paste, for example, the components of the components of the functional composition II) are suspended in or mixed with water to form a suspension or paste, that is to say composition II'). Then, the composition II') is applied, for example by coating, spraying and the like, to the substrate, so as to uniformly distribute the components of the functional composition II) in the substrate.

In cases where an aqueous solution, suspension or paste is used to apply the components of functional composition II), the wet substrate loaded with the aqueous salt is then dried, to provide the combined composition in dry form. The drying process is not specifically limited, as long as one obtains a composition conventionally accepted as "dry", e.g. a dry facial mask, in the art. For industrial application, the wet substrate is dried in an economically efficient manner.

In the case where a specific polyol is used in sufficient quantity to form a suspension or paste of composition II), water may be absent. Therefore, composition II), in the form of a suspension or paste, is applied, for example, by coating, spraying and the like, to the substrate, so as to uniformly distribute the components of functional composition II) in the substrate.

Preferably, the weight ratio of tissue composition I) to composition II) ranges from 1:2 to 1:20, preferably from 1:4 to 1:10.

Adjuvant

In known manner, the composition of the present invention may also contain usual adjuvants in the cosmetic, pharmaceutical and/or dermatological field depending on the end uses and/or specific forms of the product, such as emulsifiers, hydrophilic active agents or lipophilic products, fragrances, fillers, odor absorbers and tinctures. The quantities of these different adjuvants are those conventionally used in the field considered, and for example from 0.01 to 20% of the total weight of the composition.

These adjuvants and their concentrations must be such that they do not modify the property sought for the composition of the invention.

The compositions according to the invention can be manufactured by known processes, generally used in the cosmetic or dermatological field.

The compositions according to the invention find their application in a large number of cosmetic treatments of keratinous materials such as the skin, the scalp or the mucous membranes (lips), and more particularly the skin, in particular in facial care, for example for whiten the skin. For example, the composition according to the invention can be particularly useful for a mask type product.

The object of the invention is also a cosmetic process for the care or makeup of keratinous materials, comprising the application to the keratinous materials of a combined composition in dry form as defined above.

The object of the invention is also a non-therapeutic cosmetic process for the care or makeup of keratinous materials, comprising the application to the keratinous materials of a combined composition in dry form as defined above.

The invention also relates to the cosmetic use of a composition as defined above, for the care or makeup of keratinous materials.

More particularly, the object of the invention is the cosmetic use of a combined composition in dry form as defined above, for skin care, preferably for whitening the skin, and/or reducing or lightening darker and/or more colored spots on the skin.

EXAMPLES

The following examples of compositions according to the invention are given by way of illustration and without limitation. Compounds are indicated by chemical name or INCI name.

The quantities/concentrations of ingredients in the compositions/formulas described below are expressed as % by weight, relative to the total weight of each composition/formula, unless otherwise indicated.

The main raw materials used, their trade names and suppliers are listed below.

INCI name Trade name Supplier GLYCERIN CREMERGLYC REFINED GLYCERINE 99.7% RSPO MB CREAM OLEO XANTHAN GUM XANTHAN GUM FNCS JUNGBUNZLAUER TREHALOSIS TREHALOSE 100 HAYASHIBARA MANNOSE D-MANNOSE CT DANISCO

Example A

First, tissue compositions I) having the following formulas were prepared (the quantities of each component are expressed by weight per part, unless otherwise indicated):

List of fabrics fiber composition basic weight
(gsm) Fabric 1
(inventive) 30% 0.5D viscose fibers + 70% 1.0D viscose fibers 40 Fabric 2
(inventive) 50% 0.5D viscose fibers + 50% 1.0D viscose fibers 40 Fabric 3
(inventive) 50% viscose of 0.5D +50% modal of 1.0D 45 Fabric 4
(inventive) 70% 0.5D viscose fibers + 30% 1.0D viscose fibers 45 Fabric 5
(inventive) 100% 0.5D viscose fiber 40 Fabric 6
(comparative) 100% 1.5D viscose fiber 53 Fabric 7
(comparative) 100% 1.5D lyocell fiber 40

Fabrics 1 to 5 and 7: commercially available from Eastex, China; And

Fabric 6: Commercially available from NBOND, China.

Then, compositions II'), i.e. functional compositions II) in water, with the following formulas were prepared as juice (the amounts of each component are expressed by weight per part, unless otherwise indicated ):

Composition II") Juice 1 (inventive) Juice 2 (inventive) Juice 3 (comparison) glycerin 6 6 xanthan gum 0.5 0.5 trehalose 2 mannose 2 water 91.5 91.5 100

Procedure: mixing the components of composition II’), to produce juices, respectively.

Subsequently, each of the fabrics 1 to 7 was coated with each of the juices 1 to 3, in a weight ratio of 1:4; and then

the juices 1 to 3 were dried by heating to leave the compositions II) 1 to 3 on the fabrics 1 to 7, respectively, so as to provide the combined composition in dry form, in the form of dry masks, as follows:

Combined composition in dry forms obtained

Composition II)- 1
(inventive)

Composition II)- 2
(inventive) Composition II)- 3
(comparative) Fabric 1 (inventive) Ex.1.1 Ex.1.2 C.E.1.3 Fabric 2 (inventive) Ex.2.1 Ex.2.2 C.E. 2.3 Fabric 3 (inventive) Ex.3.1 Ex.3.2 C.E.3.3 Fabric 4 (inventive) Ex.4.1 Ex.4.2 C.E.4.3 Fabric 5 (inventive) Example 5.1 Example 5.2 C.E.5.3 Fabric 6 (comparison) C.E.6.1 C.E.6.2 C.E.6.3 Fabric 7 (comparison) C.E.7.1 C.E.7.2 C.E.7.3

Example B

The inventive and comparative masks were evaluated with the following protocols.

- Juice absorption scale (1 to 5): 1: poor; 2: weak; 3: medium; 4: good; 5: excellent.

Method for evaluating juice absorption:

1. cut the dry masks into mask shapes (size: ~320 cm ² );

2. weigh the dry (inventive) masks and record them as w1;

3. pour water into a plate and place the dry masks (inventive) in the water, where the dry masks are completely submerged in the water; and leave for 1 minute;

4. remove the mask having absorbed the water and hang it for another 2 minutes;

5. weigh the mask again and record it as w2;

6. repeat the test for 2 other samples and obtain 3 individual results; And

7. calculate the average result to obtain the juice absorption rate:

absorption rate = (w2-w1)/w1*100%.

If data is <5, rate as bad

if the data is between 5 and 8, rate as low

if the data is between 8 and 11, rate as medium

if the data is between 11 and 14, mark as good

if data is >14, rate as excellent.

- Juice gelling scale (1 to 5) on the surface of the fabric: 1: not perceptible (poor); 2: weak; 3: medium; 4: strong; 5: dispersed gel (good).

Evaluation method: A panel of 6 experts evaluated the juice gelling scale on the fabric by touch by lightly moving the finger on the surface of the fabric and gave grades in the 5 grades above for each necessary mask obtained.

- Softness of the mask: 1: bad; 2: weak; 3: medium; 4: good; 5: excellent.

Softness evaluation process: A panel of 6 experts evaluated the softness of the mask by touch by lightly moving the finger on the surface of the mask and assigned a score greater than 5 for each (inventive) mask obtained.

The results are given in Table 4 below.

Result juice absorption scale gelling of juice on the surface of the fabric softness of the mask Ex.1.1 4.1 4.5 4 Ex.1.2 3.8 4.7 3.8 Ex.2.1 4.8 4.8 4.3 Ex.2.2 4.8 4.7 4.3 Ex.3.1 4.7 4.7 4.2 Ex.3.2 4.7 4.8 4.2 Ex.4.1 4.7 4.6 4.8 Ex.4.2 4.8 4.8 4.8 Ex.5.1 4.6 4.7 5 Ex.5.2 4.7 4.5 5 C.E. 1.3 3.2 1 2.2 C.E. 2.3 3 1 2.5 C.E.3.3 2.9 1 2.8 C.E.4.3 2.8 1 2.8 C.E.5.3 2.7 1 3 C.E.6.1 3.5 4 2.4 C.E.6.2 3.4 3.8 2.5 C.E.6.3 3.2 1 2 C.E.7.1 3.5 4 2.1 C.E.7.2 3.6 3.8 2 C.E.7.3 2.5 1 1.8

From the notes provided in accordance with the present invention, it was concluded that the composition combined in dry forms achieved a good combination of juice absorption, gelling, and mask softness.

Claims (10)

Combined composition in dry form, comprising the following compositions:
I) a tissue composition I) in dry form, comprising a water-insoluble substrate comprising fine regenerated cellulose fibers, as component A, having a fiber diameter of 0.9 denier or less in an amount of 20 % by weight or more, relative to the weight of the substrate; And
II) a functional composition II) in dry form, comprising a gelling agent,
in which the components of functional composition II) are uniformly distributed in the substrate. A combined composition in dry form according to claim 1, wherein the fine regenerated cellulose fiber, as component A, is selected from the group consisting of viscose, modal, lyocell and cupro. A combined composition in dry form according to any preceding claim, wherein the fine regenerated cellulose fiber, as component A, has a fiber diameter of 0.6 denier or less, and/or a fiber diameter of 0.3 denier or more. Combined composition in dry form according to any one of the preceding claims, in which the tissue composition I) has a basis weight of 20 to 80 g/m ² , preferably 25 to 70 g/m ² , or 40 to 55 g/ ^m2 . Combined composition in dry form according to any one of the preceding claims, in which the substrate comprises additional fibers, called component B, other than fine regenerated cellulose fibers, which component B is chosen from the group consisting of natural fibers such such as cotton, paper pulp, bamboo and cellulose fibers, semi-natural fibers such as viscose rayon fibers, charcoal viscose fibers, bamboo charcoal viscose fibers, synthetic fibers such as polyester fibers, poly(ethylene terephthalate) fibers, polyethylene fibers, polypropylene fibers, or a mixture thereof. Combined composition in dry form according to any one of the preceding claims, wherein the fine regenerated cellulose fiber is in an amount ranging from 20% to 100% by weight, preferably from 50% or more to 100% by weight, per ratio to the total weight of the substrate of tissue composition I); and or
the additional fiber/component B is present in an amount ranging from 0% to 80% by weight, preferably from 0% or more to 50% by weight, based on the total weight of the substrate of tissue composition I). Combined composition in dry form according to any one of the preceding claims, in which the gelling agent is chosen from the group consisting of synthetic polymeric gelling agents and natural or natural polymeric gelling agents, preferably polysaccharides, such such as fructans, glucans, galactans and mannans or heteropolysaccharides such as hemicellulose, such as xanthan, pullulan, dextran or succinoglycan. Combined composition in dry form according to any one of the preceding claims, in which the functional composition II) further comprises a polyol having from 2 to 20 carbon atoms, preferably having from 2 to 10 carbon atoms, and preferably having 2 to 6 carbon atoms, such as glycerin, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, dipropylene glycol, and diethylene glycol. Combined composition in dry form according to any one of the preceding claims, in which the functional composition II) further comprises a sugar chosen from the group consisting of trehalose, sucrose, mannose, lactose, glucose, dextrose, maltose, fructose, disaccharides, trisaccharides, tetrasaccharides, pentasaccharides and hexasaccharides. Use of a tissue composition I) as defined in any one of the preceding claims for the production of a skin care product, for example a mask.