Composition for caring for keratin materials and mask comprising same

Abstract

There is provided a composition, preferably for caring for keratin materials, comprising: (i) at least one Sphingomonas ferment extract; (ii) at least one carrageenan; and (iii) at least one non-ionic polysaccharide chosen from a homopolymer of mannose, a copolymer of mannose and glucose, a copolymer of mannose and galactose, and combinations thereof. There is also provided a mask comprising said composition and a non-therapeutic method for caring for keratin materials.

Description

Technical Field

[0001] This invention relates to a composition and a facial mask containing said composition. In particular, this invention relates to a composition for caring for keratin materials, and a facial mask containing said composition. This invention also relates to a non-therapeutic method for caring for keratin materials. Background Technology

[0002] Hydrogels are solid gels containing different types of polymers that can retain a large amount of water. This technology is widely used in medical dressings to provide soothing or wound-healing effects. In the cosmetics field, hydrogels can be used as a substrate for sheet masks.

[0003] To ensure a sufficiently firm sheet mask, the common approach is to increase the polymer concentration.

[0004] However, when the concentration of the polymer increases, the resulting hydrogel becomes harder and more difficult to bend and conform to the shape of the face. It is acceptable to use it as a local patch such as an eye patch or spot patch, but it cannot be used as a full-face mask or for other body parts.

[0005] Compositions that are desired to have a softness suitable for the entire face or other body parts.

[0006] It is also expected that the composition has good affinity so that it can adhere to the skin.

[0007] Therefore, there is a need to develop a soft composition that has good skin affinity.

[0008] Furthermore, the formulation of environmentally friendly cosmetics designed and developed with environmental concerns in mind is becoming a major goal in efforts to address global challenges.

[0009] Therefore, it is crucial to develop more sustainable compositions and ingredients to address these environmental issues.

[0010] In this context, it is important to develop new cosmetic compositions with a better carbon footprint, particularly by promoting the use of renewable ingredients and / or materials with a good naturalness index and / or natural sources, especially plant-based materials, while reducing the use of petrochemical-derived compounds. Invention Overview One object of the present invention is to provide a soft composition that has good affinity for keratin materials.

[0012] Another object of the present invention is to provide a soft face mask that has good affinity for keratin materials.

[0013] A third objective of this invention is to provide a non-therapeutic method for caring for keratin materials.

[0014] Therefore, according to a first aspect, the present invention provides a composition preferably used for caring for keratin materials, comprising: (i) at least one extract of Sphingosine monocytogenes fermentation product; (ii) at least one carrageenan; and (iii) at least one nonionic polysaccharide selected from homopolymers of mannose, copolymers of mannose and glucose, copolymers of mannose and galactose, and combinations thereof.

[0015] The composition according to the invention is soft and has good affinity for keratin materials.

[0016] The compositions according to the invention are suitable for face masks, especially those for conditioning keratin materials.

[0017] According to a second aspect, the present invention provides a facial mask preferably used for caring for keratin materials, comprising: A) Facial mask sheets, and B) The composition according to the invention on a facial mask sheet.

[0018] The compositions and masks according to the present invention can be used to care for keratin materials.

[0019] According to a third aspect, the present invention also provides a non-therapeutic method for caring for keratin materials, comprising applying a composition or mask according to the invention to the keratin material.

[0020] Other subjects, features, aspects, and advantages of the invention will become even clearer upon reading the following detailed description and examples. Invention Details As used herein, unless otherwise stated, the boundaries of a numerical range are included within that range, particularly in expressions “between … and …” and “… to …”.

[0022] As used herein, the term “includes / comprising” should be interpreted as covering all specifically mentioned features as well as optional, additional, or unspecified features.

[0023] As used herein, the use of the term “comprising / including” also discloses an implementation in which no features other than those specifically mentioned (i.e., “composed of”) are present.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Where the definitions of terms in this specification conflict with the meanings commonly understood by one of ordinary skill in the art to which this invention pertains, the definitions set forth herein shall apply.

[0025] Unless otherwise stated, all numerical values ​​representing amounts of components, etc., used in the specification and claims should be understood to be modified by the term "approximately". Therefore, unless otherwise indicated, the numerical values ​​and parameters described herein are approximate and can be varied according to desired performance as needed.

[0026] As used herein, the expression "at least one" is equivalent to the expression "one or more".

[0027] For the purposes of this invention, the term "keratin material" is intended for covering the skin. Facial and ocular skin are particularly considered according to this invention.

[0028] The composition according to the present invention comprises: (i) at least one extract of Sphingosine monocytogenes fermentation product; (ii) at least one carrageenan; and (iii) at least one nonionic polysaccharide selected from homopolymers of mannose, copolymers of mannose and glucose, copolymers of mannose and galactose, and combinations thereof.

[0029] Sphingosomalidone fermentation product extract According to a first aspect, the composition of the present invention comprises at least one extract of Sphingomonas fermentation product.

[0030] Sphingosine monocytogenes fermentation product extract is an extract of the product obtained through the fermentation of Sphingosine monocytogenes. It is known to contain glycolipids (GSLs) such as seramide, dihydrosphingosine, and glucuronic acid, and is widely appreciated for its function in reducing lipid peroxidation and key biomarkers of aging (thereby preventing skin aging).

[0031] The extracts according to the present invention can be prepared by any conventional method known to those skilled in the art. These methods typically include steps of fermentation, extraction, separation, and purification.

[0032] Typically, Sphingomonas bacteria are cultured in suitable media at desired densities. The bacteria themselves are concentrated by any known method, such as centrifugation. The concentrated bacteria can then be used directly as a crude preparation, or additional processing steps known to those skilled in the art can be performed, such as lyophilization, dehydration, filtration, purification, freezing, optionally followed by thawing, sterilization, column chromatography, grinding, etc.

[0033] Preferably, the bacterial extract is a bacterial lysate, which specifically contains compounds contained in the bacteria and is therefore present in the bacterial precipitate of the centrifuged bacterial culture. Preferably, the bacterial extract is a bacterial lysate containing intracellular mediators and / or components of the (cell) wall and / or cell membrane.

[0034] Lysate generally refers to the material obtained at the end of the destruction or dissolution of a biological cell through a phenomenon called cell lysis, which results in the release of intracellular biological components naturally present in the cell of the microorganism under consideration.

[0035] For the purposes of this invention, the term lysate is used indiscriminately to refer to all lysates obtained by lysis of the relevant microorganisms or only a portion thereof.

[0036] The lysates used are therefore formed entirely or partially from intracellular biological components as well as components of the cell wall and cell membrane.

[0037] This cell lysis can be performed using various techniques, such as osmotic shock, heat shock (e.g., freezing, optionally followed by thawing), by ultrasound, or under mechanical stress, such as centrifugation.

[0038] Preferably, the pyrolyte used in the framework of the present invention is obtained by a method comprising the following steps: i) Centrifugation step; ii) Steps for recovering precipitates; iii) The step of freezing the precipitate; iv) The procedure for thawing the precipitate; v) Optionally, sterilization is performed via autoclaving, particularly at 121°C.

[0039] In a preferred embodiment of the invention, the bacterial extract comprises inactivated bacteria.

[0040] Here, "inactivation" has the meaning commonly used by those skilled in the art, namely, inhibiting bacterial activity under the influence of various factors (heat, chemical, mechanical, enzymatic substances). Preferably, bacteria are inactivated by heating, and more preferably by autoclaving.

[0041] Preferably, the bacteria in the extract according to the present invention are *Sphingosine monocytogenes* (SCM). Sphingomonasxenophaga In a more preferred embodiment, the bacterium is a heterophagocytic sphingosine monocytogenes deposited on 21 November 2019 at Collection Nationale de Culture de Microorganismes ((CNCM), Paris, France) by L'Oréal, 101 Avenue Gustave Eiffel, 37390 Notre Dame d'Oé with the number CNCM I-5455.

[0042] As an example of a commercial product of *Sphingomonas* fermentation product extract that can be used in the compositions according to the present invention, reference can be made to NOVEAL under the name MEXORYL. ® Products sold by SDT.

[0043] Advantageously, relative to the total weight of the composition of the present invention, the Sphingomonas fermentation product extract is present in the composition in an amount ranging from 0.0001% to 10% by weight, preferably 0.0003% to 5% by weight, more preferably 0.0005% to 1% by weight, even more preferably 0.008% to 0.5% by weight, and most preferably 0.001% to 0.2% by weight.

[0044] Carrageenan According to a first aspect, the composition of the present invention comprises at least one carrageenan.

[0045] Carrageenan is a sulfated polysaccharide that constitutes the cell walls of various red algae, and it can be obtained from red algae. Among these red algae, *Kappa longicornis* can be mentioned in a non-limiting manner. Kappaphycusalvarezii ), Fine-toothed Euphorbia Eucheumadenticulatum ), Euphorbia milii ( Eucheumaspinosum ), wrinkled horn lettuce ( Chondruscrispus ), Qiongzhi Qilin Cai ( Betaphycus gelatinum Thick-walled cypress ( Gigartinaskottsbergii ), gully cypress ( Gigartinacanaliculata ), Sarcothaliacrispata , Mazzaellalaminaroides , hook sand vegetable ( Hypneamusciformis ), Mastocarpusstellatus and heart-shaped Ginkgo biloba ( Iridaeacordata ).

[0046] Carrageenan comprises long chains of galactan formed from disaccharide units. These polysaccharides consist of alternating (1→3)β-D-galactopyranose (G units) and (1→4)α-galactopyranose (D units) or 3,6-anhydro-α-galactopyranose (AnGal units). Each sugar unit may be sulfated once or more at positions 2, 3, 4, or 6. Methyl and pyruvate groups, as well as other sugar units grafted onto the previously described basic structure, are also found. Carrageenan is initially subdivided into subfamilies based on its solubility in KCl, and then based on the number and position of sulfate ester groups and the presence of 3',6'-anhydro bridges on the galactopyranose residues. At least 15 carrageenan species are listed, their structures depending on the algal source and extraction method. Among the most common carrageenan compounds, the following can be mentioned: μ-carrageenan ((1→3)β-D-galactopyranose-4-sulfate-(1→4)-α-D-galactopyranose-6-sulfate), κ-carrageenan ((1→3)β-D-galactopyranose-4-sulfate-(1→4)3,6-anhydro-α-D-galactopyranose), v-carrageenan ((1→3)β-D-galactopyranose-4-sulfate-(1→4)-α-D-galactopyranose-2,6-disulfate), τ-carrageenan ((1→3)β-D-galactopyranose- 4-Carrageenan ((1→4)3,6-dehydrated-α-D-galactopyranose-2-sulfate), λ-Carrageenan ((1→3)β-D-galactopyranose-2-sulfate-(1→4)-α-D-galactopyranose-2,6-disulfate), γ-Carrageenan ((1→3)β-D-galactopyranose-2-sulfate-(1→4)3,6-dehydrated-α-D-galactopyranose-2-sulfate), ξ-Carrageenan ((1→3)β-D-galactopyranose-2-sulfate-(1→4)3,6-dehydrated-α-D-galactopyranose-2-sulfate).

[0047] These carrageenan gums can be obtained as mixtures of different structures (in a non-limiting manner, such as mixtures of κβ, κτ, and κμ).

[0048] Preferably, carrageenan is selected from μ-carrageenan, κ-carrageenan, V-carrageenan, τ-carrageenan or λ-carrageenan, and mixtures thereof in all proportions, with κ-carrageenan being the most preferred.

[0049] Carrageenan of the present invention can be used in acidic or salt-forming form. Acceptable salts, which may be mentioned in a non-limiting manner, include lithium, sodium, potassium, calcium, zinc, and ammonium salts; or salts obtained with an organic base counterion (e.g., primary (C1-C6)alkylamine, secondary (C1-C6)alkylamine, or tertiary (C1-C6)alkylamine, especially triethylamine or butylamine). Such primary, secondary, or tertiary alkylamines may contain one or more nitrogen and / or oxygen atoms, and therefore may contain, for example, one or more alcohol functionalities; amino-2-methyl-2-propanol, triethanolamine, and dimethylamino-2-propanol are mentioned in particular. Lysine or 3-(dimethylamino)propylamine may also be mentioned. These sulfated polysaccharides may also be included in mixtures of counterions among those defined above in a non-limiting manner.

[0050] Preferably, the carrageenan used in this invention has a weight-average molecular weight of 300-100,000,000 g / mol, more preferably 10,000-10,000,000 g / mol.

[0051] Sulfur content of carrageenan (as SO4) 2- The percentage (calculated) is preferably between 5% and 40% (by weight relative to the total weight of carrageenan), more preferably between 7% and 25%, and even more preferably between 15% and 20%.

[0052] Preferably, the carrageenan used in this invention comprises predominantly the κ form, or is in the κ form. The term "predominantly" means that the percentage of this type of chain in the composition of the product is greater than or equal to 50%, and in some embodiments, this percentage may be greater than or equal to 80%. Such carrageenan can be the kind sold by BLG under the name CARRAGEENAN BLK1120.

[0053] Advantageously, carrageenan is present in the composition in an amount ranging from 0.005% to 6% by weight, preferably from 0.01% to 4% by weight, more preferably from 0.02% to 1% by weight, even more preferably from 0.03% to 0.5% by weight, and most preferably from 0.05% to 0.3% by weight, relative to the total weight of the composition of the present invention.

[0054] nonionic polysaccharides According to a first aspect, the compositions of the present invention comprise at least one nonionic polysaccharide selected from homopolymers of mannose, copolymers of mannose and glucose, copolymers of mannose and galactose, and combinations thereof.

[0055] Preferably, the homopolymer refers to a polymer with a degree of polymerization between 2 and 6.

[0056] Preferably, the copolymer represents a polymer with a number average molecular weight of 10,000-2,000,000 g / mol, more preferably 20,000-1,000,000 g / mol, and more preferably 50,000-500,000 g / mol.

[0057] Preferably, the nonionic polysaccharide is selected from mannan, glucomannan, galactomannan, and combinations thereof.

[0058] Gum containing mannan, glucomannan, galactomannan or combinations thereof can also be used as nonionic polysaccharides in the compositions of the present invention.

[0059] Therefore, preferably, the nonionic polysaccharide is selected from mannan, glucomannan, galactomannan, konjac gum, Bletilla striata gum, guar gum, fenugreek gum, guar gum, locust bean gum, cassia seed gum, and combinations thereof.

[0060] More preferably, the nonionic polysaccharide is selected from glucomannan, konjac gum, Bletilla striata gum, and combinations thereof.

[0061] Examples of commercial glucomannan products that can be used in the compositions according to the invention include the one sold by XieLi under the name KONJAC GEL CKAA1220 and the one sold by BLG under the name KONJAC FLOURHWG1002.

[0062] Advantageously, the nonionic polysaccharide is present in the composition in an amount ranging from 0.01% to 10% by weight, preferably from 0.02% to 6% by weight, more preferably from 0.05% to 1.5% by weight, even more preferably from 0.1% to 0.8% by weight, and most preferably from 0.15% to 0.5% by weight, relative to the total weight of the composition of the present invention.

[0063] Preferably, relative to the total weight of the composition of the present invention, the total amount of carrageenan and nonionic polysaccharides in the composition is 0.05% to 2% by weight, preferably 0.1% to 1% by weight, and more preferably 0.3% to 0.5% by weight.

[0064] Ionic polysaccharides different from carrageenan Preferably, the composition of the present invention comprises one or more ionic polysaccharides different from carrageenan.

[0065] Preferably, the ionic polysaccharide, which is different from carrageenan, is selected from xanthan gum, gellan gum, and combinations thereof.

[0066] Xanthan gum is produced by the bacteria Xanthomonas campestris (…). XanthomonascampestrisXanthan gum is a heteropolysaccharide produced by the aerobic fermentation of xanthan gum. Its structure consists of a β(1,4)-linked β-D-glucose backbone, similar to cellulose. One of the two glucose molecules carries a trisaccharide side chain consisting of α-D-mannose, β-D-glucuronic acid, and terminal β-D-mannose. The internal mannose residues are typically acetylated at carbon 6. Approximately 30% of the terminal mannose residues have pyruvate groups chelated between carbons 4 and 6. The charged pyruvate and glucuronic acid are ionizable, thus giving xanthan gum its anionic properties (it remains negatively charged even at pH 1). These groups can be used in commercial products with Na... + K + or Ca 2+ Ion neutralization (Satia, 1986). The neutralized form can be converted to the acidic form through ion exchange or by dialysis of an acidic solution.

[0067] Gellan gum has a repeating tetrasaccharide structure composed of (glucose-glucuronic acid-glucose-rhamnose) units.

[0068] The partial structure of gellan gum is as follows: -4)-L-Rhap-(α-1-3)-D-Glcp-(β-1-4)-D-GlcpA-(β-1-4)-D-Glcp-(β-1-.

[0069] The inventors have discovered that the presence of ionic polysaccharides, different from carrageenan, selected from xanthan gum, gellan gum, and combinations thereof, also contributes to the softness of the composition.

[0070] Advantageously, relative to the total weight of the composition of the present invention, ionic polysaccharides other than carrageenan are present in the composition in an amount ranging from 0.01% to 10% by weight, preferably from 0.03% to 6% by weight, more preferably from 0.05% to 3% by weight, even more preferably from 0.1% to 2% by weight, and most preferably from 0.15% to 1% by weight.

[0071] surfactants Preferably, the composition of the present invention comprises one or more surfactants selected from polyglycerol fatty acid esters having a sugar moiety.

[0072] Preferably, the polyglycerol portion is derived from 2-10 glycerol units.

[0073] Preferably, the fatty acid is selected from C12-C22 fatty acids.

[0074] Polyglycerol fatty acid esters may be selected from PG2 laurate, PG2 dilaurate, PG2 trilaurate, PG2 myristate, PG2 dimyristate, PG2 trimyristate, PG2 palmitate, PG2 dipalmitate, PG2 tripalmitate, PG2 stearate, PG2 distearate, PG2 tristearate, PG2 isostearate, PG2 diisostearate, PG2 triisostearate, PG2 oleate, PG2 dioleate, PG2 trioleate, PG3 laurate, PG3 dilaurate, PG3 trilaurate, PG3 myristate, PG3 dimyristate, PG3 trimyristate, PG3 palmitate, PG3 dipalmitate, PG3 tristearate, etc. Palmitate, PG3 stearate, PG3 distearate, PG3 tristearate, PG3 isostearate, PG3 diisostearate, PG3 triisostearate, PG3 oleate, PG3 dioleate, PG3 trioleate, PG4 laurate, PG4 dilaurate, PG4 trilaurate, PG4 myristate, PG4 dimyristate, PG4 trimyristate, PG4 palmitate, PG4 dipalmitate, PG4 tripalmitate, PG4 stearate, PG4 distearate, PG4 tristearate, PG4 isostearate, PG4 diisostearate, PG4 triisostearate, PG4 oleate, PG4 dioleate, PG4 trioleate, PG5 PG5 laurate, PG5 dilaurate, PG5 trilaurate, PG5 myristate, PG5 dimyristate, PG5 trimyristate, PG5 palmitate, PG5 dipalmitate, PG5 tripalmitate, PG5 stearate, PG5 distearate, PG5 tristearate, PG5 isostearate, PG5 diisostearate, PG5 triisostearate, PG5 oleate, PG5 dioleate, PG5 trioleate, PG6 laurate, PG6 dilaurate, PG6 trilaurate, PG6 myristate, PG6 dimyristate, PG6 trimyristate, PG6 palmitate, PG6 dipalmitate, PG6 tripalmitate, PG6 stearate, P G6 distearate, PG6 tristearate, PG6 isostearate, PG6 diisostearate, PG6 triisostearate, PG6 oleate, PG6 dioleate, PG6 trioleate, PG10 laurate, PG10 dilaurate, PG10 trilaurate, PG10 myristate, PG10 dimyristate, PG10 trimyristate, PG10 palmitate, PG10 dipalmitate, PG10 tripalmitate, PG10 stearate, PG10 distearate, PG10 tristearate, PG10 isostearate, PG10 diisostearate, PG10 triisostearate, PG10 oleate, PG10 dioleate and PG10 trioleate.

[0075] Preferably, the sugar portion is derived from sucrose, maltose, glucose, fructose, or methyl glucose.

[0076] Therefore, preferably, the surfactant is selected from polyglycerol C10-C22 fatty acid esters having a sugar moiety derived from sucrose, maltose, glucose, fructose or methyl glucose, preferably, the polyglycerol moiety is derived from 2-10 glycerol units.

[0077] More preferably, the composition of the present invention comprises polyglycerol-3-methylglucose distearate.

[0078] Advantageously, a surfactant selected from polyglycerol fatty acid esters having a sugar moiety is present in the composition in an amount ranging from 0.01% to 2% by weight, preferably from 0.02% to 1% by weight, and more preferably from 0.03% to 0.5% by weight, relative to the total weight of the composition of the present invention.

[0079] Aqueous phase Preferably, the composition of the present invention comprises an aqueous phase.

[0080] Preferably, the aqueous phase contains water.

[0081] Advantageously, water is present in the composition in an amount ranging from 60% to 99% by weight, preferably from 65% to 95% by weight, relative to the total weight of the composition of the invention.

[0082] Preferably, the aqueous phase comprises (at room temperature 25°C) an organic solvent miscible with water, selected from ethanol and polyols having 2 to 20 carbon atoms, preferably 2 to 10 carbon atoms and more preferably 2 to 6 carbon atoms, such as glycerol, propylene glycol, butylene glycol, pentanediol, hexanediol, dipropylene glycol, diethylene glycol; and combinations thereof.

[0083] Preferably, a water-miscible organic solvent, especially glycerol, is present in the composition in an amount ranging from 0.5% to 30% by weight, preferably from 1% to 20% by weight, relative to the total weight of the composition of the present invention.

[0084] Advantageously, the aqueous phase is present in the composition in an amount ranging from 60% to 99.5% by weight, preferably from 65% to 99% by weight, relative to the total weight of the composition of the invention.

[0085] Preferably, the composition according to the invention is oil-free.

[0086] The term "oil" refers to oil that is heated at ambient temperature (25°C) and atmospheric pressure (760 mmHg, i.e., 1.013 × 10⁻⁶). 5 The substance below (Pa) is a liquid fatty substance.

[0087] As used herein, “oil-free” means that the amount of oil in the composition of the present invention is less than 2% by weight, preferably less than 1% by weight, and even more preferably less than 0.5% by weight relative to the total weight of the composition of the present invention.

[0088] Additional cosmetic active ingredients Depending on the end purpose, the compositions according to the invention may contain one or more additional cosmetic active ingredients.

[0089] Those skilled in the art can readily adjust the amount of additional cosmetic active ingredients based on the end use of the composition according to the invention.

[0090] Additional excipients or additives The compositions of the present invention may contain additional conventional cosmetic adjuvants or additives, such as fragrances, chelating agents, pH adjusters, and mixtures thereof.

[0091] Those skilled in the art can select the amount of additional excipients or additives so as not to adversely affect the final use of the composition according to the invention.

[0092] According to a preferred embodiment, the present invention provides a composition in the form of a hydrogel, comprising, relative to the total weight of the composition: (i) 0.001% to 0.2% by weight of Sphingomonas fermentation product extract; (ii) 0.03% to 0.5% by weight of carrageenan; and (iii) 0.1% to 0.8% by weight of nonionic polysaccharides selected from glucomannan, konjac gum, Bletilla striata gum and combinations thereof.

[0093] The compositions according to the invention are intended for use in combination with facial mask sheets, preferably water-insoluble sheets.

[0094] For the purposes of this invention, the term "water insoluble" means that the mask sheet is insoluble in water and will not break when immersed in water.

[0095] Those skilled in the art can select a suitable mask sheet and the weight ratio of the mask sheet to the composition based on the properties of the composition according to the present invention.

[0096] Facial mask sheets can be woven, knitted, or nonwoven fabrics made from 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 of the above-mentioned fibers can be used in combination.

[0097] Facial mask sheets can consist of one or more layers. If multi-layered paper is used, the materials of each layer can be the same or different from each other. Multi-layered paper can be prepared by laminating multiple layers made of the above materials.

[0098] Facial mask sheets can come in a variety of shapes, depending on the intended use and characteristics of the mask.

[0099] Facial mask sheets are typically designed to fit the areas of skin that need to be applied locally. For example, when a mask is applied to the face, the mask sheet is designed to conform to the shape of the face and avoid the eye, nostril, and mouth areas as needed.

[0100] Those skilled in the art can determine the thickness and texture of the mask sheet based on the intended purpose.

[0101] Therefore, according to a second aspect, the present invention provides a facial mask preferably used for caring for keratin materials, comprising: A) Facial mask sheets, and B) The composition according to the first aspect of the invention on a facial mask sheet.

[0102] Preparation and Uses The compositions and face masks according to the present invention can be prepared through conventional practices.

[0103] Preferably, the composition according to the invention is in the form of a hydrogel.

[0104] The compositions and masks according to the invention are intended for topical application, and are particularly suitable for treating keratinous materials, especially human skin.

[0105] According to a third aspect, the present invention provides a non-therapeutic method for caring for keratin materials, comprising applying a composition or mask according to the invention to the keratin material.

[0106] In particular, keratin materials are used on facial skin and / or eye area skin.

[0107] The invention is illustrated in more detail by way of embodiments described below as non-limiting examples.

[0108] Example The main raw materials used, their trade names, and suppliers are listed in Table 1.

[0109] Table 1 INCI Name Product Name supplier Sphingosomalidone fermentation product extract <![CDATA[MEXORYL ® SDT]]> NOVEAL Carrageenan CARRAGEENAN BLK1120 BLG glucomannan KONJAC FLOUR HWG1002 BLG Xanthan Gum <![CDATA[KELTROL ® CG-T]]> CP KELCO Polyglycerol-3-methylglucose distearate <![CDATA[TEGO ® CARE 450 MB]]> EVONIK GOLDSCHMIDT Invention Examples 1-3 and Comparative Examples 1-3 The compositions of Invention Examples (IE.) 1-3 and Comparative Examples (CE.) 1-3 were prepared according to the amounts of components given in Table 2. The amount of each component is given as a percentage by weight relative to the total weight of the composition, unless otherwise indicated as active ingredient (AM).

[0110] Table 2 The compositions of Examples 1-3 represent the compositions of the present invention.

[0111] The compositions of Comparative Examples 1-2 do not contain at least one Sphingomonas fermentation product extract.

[0112] The composition of Comparative Example 3 does not contain carrageenan.

[0113] Preparation of the composition The above composition was prepared as follows: 1) Preparation of phase A: Carrageenan (if present), glucomannan and xanthan gum were mixed in glycerol with stirring to obtain a mixture. The mixture was then introduced into water at 80°C and stirred for 30 minutes. 2) Introduce the Sphingomonas fermentation product extract (if present) into phase A at 80°C and stir for 5 minutes to obtain the composition.

[0114] Preparation of face masks Weigh 30 g of each composition of Invention Examples (IE.) 1-3 and Comparative Examples (CE.) 1-3, and apply it to 1 g of fabric made of cellulose using a coating machine to obtain a face mask.

[0115] Evaluate The softness and skin affinity of each obtained composition were evaluated.

[0116] Softness The softness of the compositions of Invention Examples (IE.) 1-3 and Comparative Examples (CE.) 1-3 was characterized as follows by gel strength tested using a texture analyzer called Stable Micro Systems TA.XT Plus, available from Lotunscience.

[0117] A sample at 80°C was poured into a cylinder with a diameter of 68 mm and a height of 25 mm, the amount being sufficient to create a smooth and uniform surface free of defects. The sample was allowed to solidify overnight at room temperature in the cylinder. Subsequently, testing was conducted under the following conditions according to the manufacturer's instructions: For each sample, the force at 8 mm was read as the gel strength. The gel strength results for each tested composition are listed in Table 3.

[0118] The gel strength value is expressed in "g". The lower the gel strength value, the softer the composition. A gel strength of less than 200 g is acceptable.

[0119] Affinity The skin affinity of the compositions of Invention Examples (IE.) 1-3 and Comparative Examples (CE.) 1-3 is evaluated as follows.

[0120] Twenty volunteers were invited to have a face mask containing the composition to be tested applied to their face (with the composition in contact with the face) and to perform the following movements while keeping the mask in place: a) Blink 10 times; b) Move your eyes to the right, left, clockwise, and counterclockwise, 3 times each; c) Move your mouth by saying "e", "i", and "u" three times each; d) Move your face downwards 3 times; e) Move your face 45° to the right, then 45° to the left, 3 times each.

[0121] Volunteers then provided skin affinity scores for the test composition according to the following criteria, and the average score was taken: 0-1: More than 50% of the facial skin area is peeled off. 1-2: Peel off 30-50% of the facial skin. 2-3: Gently peel off 20-30% of the facial skin. 3-4: Gently peel off 10-20% of the facial skin. 4-5: Gently peel off 5-10% of the facial skin area. 5-6: Almost no slight peeling from the facial skin, peeling 0-5% of the area.

[0122] The gel strength and skin affinity of the compositions of the obtained Invention Examples (IE.) 1-3 and Comparative Examples (CE.) 1-3 are listed in Table 3.

[0123] Table 3 nature IE.1 IE.2 IE. 3 CE. 1 CE. 2 CE. 3 gel strength (g) 180 140 190 300 560 90 Affinity 5.2 5.8 5.7 3.1 1.2 NA NA: Not evaluated because the composition is too dry to adhere to the skin.

[0124] It can be seen that each of the invention compositions has a gel strength value of less than 200, and each invention composition has an affinity score of greater than 5, which means that the invention compositions are soft and have good affinity to the skin.

Claims

1. A composition preferably used for caring for keratin materials, comprising: (i) at least one extract of Sphingosine monocytogenes fermentation product; (ii) at least one carrageenan; and (iii) at least one nonionic polysaccharide selected from homopolymers of mannose, copolymers of mannose and glucose, copolymers of mannose and galactose, and combinations thereof.

2. The composition of claim 1, wherein the Sphingomonas fermentation product extract is present in an amount ranging from 0.0001% to 10% by weight, preferably from 0.0003% to 5% by weight, more preferably from 0.0005% to 1% by weight, even more preferably from 0.0008% to 0.5% by weight, and most preferably from 0.001% to 0.2% by weight, relative to the total weight of the composition.

3. The composition of claim 1 or 2, wherein the carrageenan is selected from μ-carrageenan, κ-carrageenan, V-carrageenan, τ-carrageenan or λ-carrageenan, and mixtures thereof in all proportions, preferably κ-carrageenan.

4. The composition of any one of claims 1 to 3, wherein carrageenan is present in an amount ranging from 0.005% to 6% by weight, preferably from 0.01% to 4% by weight, more preferably from 0.02% to 1% by weight, even more preferably from 0.03% to 0.5% by weight, and most preferably from 0.05% to 0.3% by weight, relative to the total weight of the composition.

5. The composition of any one of claims 1 to 4, wherein the nonionic polysaccharide is selected from mannan, glucomannan, galactomannan, konjac gum, Bletilla striata gum, guar gum, fenugreek gum, guar gum, locust bean gum, cassia seed gum, and combinations thereof; more preferably, the nonionic polysaccharide is selected from glucomannan, konjac gum, Bletilla striata gum, and combinations thereof.

6. The composition of any one of claims 1 to 5, wherein the nonionic polysaccharide is present in an amount ranging from 0.01% to 10% by weight, preferably from 0.02% to 6% by weight, more preferably from 0.05% to 1.5% by weight, even more preferably from 0.1% to 0.8% by weight, and most preferably from 0.15% to 0.5% by weight, relative to the total weight of the composition.

7. The composition of any one of claims 1 to 6, wherein the total amount of carrageenan and the nonionic polysaccharide in the composition is 0.05% to 2% by weight, preferably 0.1% to 1% by weight, and more preferably 0.3% to 0.5% by weight, relative to the total weight of the composition.

8. The composition according to any one of claims 1 to 7, further comprising one or more ionic polysaccharides selected from xanthan gum, gellan gum and combinations thereof, different from carrageenan, preferably present in an amount ranging from 0.01% to 10% by weight, preferably from 0.03% to 6% by weight, more preferably from 0.05% to 3% by weight, even more preferably from 0.1% to 2% by weight, and most preferably from 0.15% to 1% by weight relative to the total weight of the composition.

9. The composition according to any one of claims 1 to 8, further comprising one or more surfactants selected from polyglycerol fatty acid esters having a sugar moiety, preferably, said surfactant being selected from polyglycerol C10-C22 fatty acid esters having a sugar moiety derived from sucrose, maltose, glucose, fructose or methyl glucose, more preferably, said polyglycerol moiety being derived from 2 to 10 glycerol units, and even more preferably, said surfactant being polyglycerol-3-methylglucose distearate, preferably, said surfactant being present in an amount ranging from 0.01 wt% to 2 wt%, preferably 0.02 wt% to 1 wt%, more preferably 0.03 wt% to 0.5 wt% relative to the total weight of said composition.

10. The composition according to any one of claims 1 to 9, It further comprises water, preferably in an amount ranging from 60% to 99% by weight, preferably from 65% to 95% by weight, relative to the total weight of the composition; and / or It further comprises one or more water-miscible organic solvents, preferably selected from ethanol, polyols having 2 to 20 carbon atoms, preferably 2 to 10 carbon atoms and more preferably 2 to 6 carbon atoms, and combinations thereof, more preferably selected from ethanol, glycerol, propylene glycol, butylene glycol, pentanediol, hexanediol, dipropylene glycol, diethylene glycol, and combinations thereof; preferably, the water-miscible organic solvent is present in an amount ranging from 0.5% to 30% by weight, preferably 1% to 20% by weight, relative to the total weight of the composition.

11. The composition according to any one of claims 1 to 10, wherein it is oil-free.

12. The composition according to any one of claims 1 to 11, wherein it is in hydrogel form.

13. The composition of claim 1, which is in hydrogel form, comprises, relative to the total weight of the composition: (i) 0.001% to 0.2% by weight of Sphingomonas fermentation product extract; (ii) 0.03% to 0.5% by weight of carrageenan; and (iii) 0.1% to 0.8% by weight of nonionic polysaccharides selected from glucomannan, konjac gum, Bletilla striata gum and combinations thereof.

14. A facial mask, preferably used for caring for keratin materials, comprising: A) Facial mask sheet; and B) The composition according to any one of claims 1 to 13 on the mask sheet.

15. A non-therapeutic method for caring for a keratin material, comprising applying a composition according to any one of claims 1-13 or a mask according to claim 14 to the keratin material.

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