Capsule for the care of keratinous materials and mask containing it

Abstract

Capsule for the treatment of keratinous materials and mask containing it. The present invention relates to a capsule for the treatment of keratinous materials, comprising: a) an anhydrous inner core comprising at least one water-sensitive cosmetic active ingredient, and b) a water-soluble film enveloping the inner core, wherein the water-soluble film has a thickness of between 25 and 40 μm. The present invention also relates to a non-therapeutic method for the treatment of keratinous materials comprising dissolving the capsule as described above in water or a toner to obtain a composition and applying the composition to the keratinous materials. Figure for the abstract: none

Description

Title of the invention: Capsule for the care of keratinous materials and mask containing it technical field

[0001] The present invention relates to a product for the care of keratinous materials. In particular, the present invention relates to a keratinous material care capsule and a mask containing it. The present invention also relates to a non-therapeutic method for the care of keratinous materials. RELATED ART

[0002] The ultimate goal of the cosmetics industry has always been to deliver highly effective products to consumers with skin benefits such as hydration, brightening, cleansing, and others.

[0003] Some cosmetic active ingredients used to care for keratinous materials are sensitive to water.

[0004] Existing products focus on a waterless cosmetic base or complicated packaging to avoid any contact with water.

[0005] It is not practical to apply certain products because of their complex packaging.

[0006] We therefore seek to develop a new product capable of protecting water-sensitive cosmetic active ingredients from water or humidity with easy application on keratinous materials. Summary of the invention

[0007] An objective of the present invention is to provide a keratin material care product that can protect water-sensitive cosmetic active ingredients from contact with water or moisture with easy application on keratin materials.

[0008] Another objective of the present invention is to provide a non-therapeutic method for the care of keratinous materials.

[0009] Consequently, in a first aspect, the present invention proposes a capsule for the care of keratinous materials, comprising:

[0010] a) an anhydrous inner core comprising at least one water-sensitive cosmetic active ingredient and

[0011] b) a water-soluble film enveloping the inner core,

[0012] in which the water-soluble film has a thickness between 25 and 40 sqm.

[0013] In the capsule according to the present invention, the water-sensitive cosmetic active ingredient is stable at room temperature, 4°C, 37°C, 45°C and 55°C for at least 2 months, and under a temperature cycle of -20 °C to 20 °C for at least 24 hours because there is no water in the anhydrous inner core.

[0014] In addition, due to the presence of the water-soluble film, consumers can use tap water, tonic water or a spray bottle to dissolve the capsule.

[0015] Depending on the water-sensitive cosmetic active ingredient contained in the capsule, the capsule according to the present invention can be used to care for keratinous materials.

[0016] In a second aspect, the present invention proposes a treatment mask for keratinous materials, comprising:

[0017] A) a water-insoluble mask fabric and

[0018] B) the capsule according to the present invention integrated into the water-insoluble mask fabric.

[0019] In a third aspect, the present invention provides a non-therapeutic method for the care of keratinous materials comprising dissolving the capsule as described above in water or a toner to obtain a composition and applying the composition to the keratinous materials.

[0020] In the fourth aspect, the present invention proposes a non-therapeutic method for the treatment of keratinous materials, comprising the following steps:

[0021] (i) the addition of water or toner to the mask according to the present invention to dissolve the capsule;

[0022] (ii) the application of the mask to keratinous materials;

[0023] (iii) leaving the mask on the keratinous materials for a certain time and

[0024] (iv) the removal of the mask from keratinous materials.

[0025] Other features and advantages of the invention will become more apparent from the description and examples that follow. DETAILED DESCRIPTION OF THE INVENTION

[0026] Unless otherwise specified, all technical and scientific terms used in this document have the same meaning as that commonly understood by a person skilled in the art in the field covered by the present invention. Where the definition of a term in the present invention conflicts with the meaning commonly understood by a person skilled in the art in the field covered by the present invention, the definition described in the present invention shall apply.

[0027] In what follows, and unless otherwise indicated, the limits of a range of values ​​are included in that range, in particular in the expressions "between...and..." and "from...to .. ».

[0028] Furthermore, the expression "at least one" used in this description is equivalent to the expression "one or more".

[0029] Throughout this application, the term "comprising" shall be interpreted as encompassing all the specifically mentioned features as well as optional, additional, and unspecified features. As used in this document, the term "comprising" also refers to the embodiment in which no features other than the specifically mentioned features are present (i.e., "consisting of").

[0030] Unless otherwise stated, all numerical values ​​expressing a quantity of ingredients and the like used in the description and claims shall be understood as modified by the term "approximately". Therefore, unless otherwise stated, the numerical values ​​and parameters described herein are approximate values ​​that may be modified depending on the intended purpose, if applicable.

[0031] For the purposes of the present invention, the term "keratinous material" is intended to cover human skin. Facial skin is considered in particular according to the present invention.

[0032] In the present invention, all percentages refer, unless otherwise indicated, to a weight percentage.

[0033] According to the first aspect, the capsule of the present invention comprises;

[0034] a) an anhydrous inner core comprising at least one water-sensitive cosmetic active ingredient and

[0035] b) a water-soluble film enveloping the inner core,

[0036] in which the water-soluble film has a thickness between 25 and 40 sqm.

[0037] Advantageously, the capsule according to the present invention has a particle size of 1-50 mm Anhydrous inner nucleus

[0038] As used here, "anhydrous" means that no water is intentionally added and that the water content is less than 1% by weight of the anhydrous inner core.

[0039] Preferably, there is no water in the anhydrous inner core.

[0040] According to the first aspect, the anhydrous inner core comprises at least one water-sensitive cosmetic active ingredient.

[0041] Water-sensitive cosmetic active ingredients that can be used according to the invention include, in particular, enzymes (e.g., lactoperoxidase, lipase, protease, phospholipase, or cellulases), natural extracts (such as green tea, balsam extract, thyme extract), procyanidolic oligomers (OPCs) (such as hawthorn OPC, pine OPC, and grape OPC), and vitamins (in particular, vitamin B (e.g., vitamin B1, B2, B3, B5, B6, B9 or B12), ascorbic acid (vitamin C) and its esters or retinol (vitamin A) and its esters), pantothenic acid, phosphate and glucosylated derivatives, urea and rutin.

[0042] Thus, the capsule comprises at least one water-sensitive cosmetic active ingredient chosen from enzymes, natural extracts, procyanidolic oligomers (OPCs), vitamins, phosphate and glucosylated derivatives, urea and a combination thereof.

[0043] Preferably, the capsule comprises at least one water-sensitive cosmetic active ingredient selected from ascorbic acid, retinol, their esters and a combination thereof.

[0044] For example, the retinol ester may be retinyl palmitate.

[0045] In some embodiments, the inner core comprises palmitate of retinyl as a water-sensitive cosmetic active ingredient.

[0046] In some embodiments, the inner core comprises ascorbic acid as a water-sensitive cosmetic active ingredient.

[0047] In some embodiments, the inner core comprises to-copheryl acetate as a water-sensitive cosmetic active ingredient.

[0048] A person skilled in the art can choose the quantity of the water-sensitive cosmetic active ingredient according to the intended purpose.

[0049] Advantageously, the water-sensitive cosmetic active ingredient is present in the inner core of the present invention in an amount in the range of 0.1% by weight to 35% by weight, better still of 0.2% by weight to 30% by weight, even better still of 0.5% by weight to 25% by weight, relative to the total weight of the capsule according to the present invention.

[0050] The anhydrous inner core can be of the oil or solid type.

[0051] As used in the present application, an oil-type inner core means that the inner core comprises the water-sensitive cosmetic active ingredient in an oily phase.

[0052] Preferably, an oil-type internal core is used when the water-sensitive cosmetic active ingredient can be dissolved or suspended in an oily phase.

[0053] Preferably, the inner oil-type core comprises at least one oil.

[0054] Here, “oil” refers to a fatty compound or a fatty substance that is in the form of a liquid or paste (not solid) at room temperature (25 °C) at atmospheric pressure (760 mmHg).

[0055] As oil(s), those generally used in cosmetics can be used alone or in combination with each other. The oil(s) may be volatile, preferably non-volatile.

[0056] The oil may be a non-polar oil such as hydrocarbons, silicones, or others; a polar oil such as esters, fatty alcohols and ethers; or a mixture of these.

[0057] The oil may be of vegetable or animal origin and synthetic oils.

[0058] The internal oil-type core according to the invention may in particular comprise hydrocarbon oils.

[0059] The term “hydrocarbon oil” refers to an oil containing mainly hydrogen and carbon atoms.

[0060] Hydrocarbon oils can be selected from: - lower linear or branched, possibly cyclic, C6-C16 alkanes. Examples include hexane, undecane, dodecane, tridecane, and isoparaffins, for example isohexadecane, isododecane, and isodecane. - linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffins, liquid petroleum jelly, hydrogenated polydecenes and polyisobutenes such as Parleam® and squalane. - vegetable oils, for example, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil and their mixtures. - artificial triglycerides, for example, caprylic / capric triglyceride, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate and glyceryl tri(caprate / caprylate / linolenate); - Ester oils, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyle propionate, 2-ethylhexyl 2-ethylhexanoate, ethylhexyl 2-octanoate, 2-ethylhexyl caprylate / caprate, methyl palmitate, ethyl palmitate, isopropyl palmitate, dicaprylyl carbonate, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythrithyl tetra(2-ethylhexanoate), 2-ethylhexyl succinate, diethyl sebacate and mixtures thereof. - ether oils; - and mixtures of these.

[0061] Preferably, the inner oil-type core comprises at least one oil selected from dicaprylyl carbonate, caprylic / capric triglyceride and a a combination of these.

[0062] The oil-type inner core may also include a polyol.

[0063] As polyols, those generally used in cosmetics can be used alone or in combination.

[0064] For the purposes of the present invention, the term “polyol” should be understood as designating any organic molecule comprising at least two free hydroxyl groups.

[0065] Preferably, a polyol according to the present invention is present in liquid form at room temperature.

[0066] A polyol suitable for use in the invention may be a linear, branched or cyclic alkyl-type compound, saturated or unsaturated, having on each alkyl chain at least two —OH functions, in particular at least three —OH functions and more particularly at least four —OH functions.

[0067] The polyols which are suitable for the formulation of an internal core according to the present invention are in particular those containing in particular from 2 to 32 carbon atoms and preferably from 3 to 16 carbon atoms.

[0068] The polyol can be chosen, for example, from ethylene glycol, pentaerythritol, trimethylolpropane, propylene glycol, 1,3-propanediol, glycerin, butanediol, isoprene glycol, pentylene glycol, hexylene glycol, caprylyl glycol, glycerol, polyglycerols, such as glycerol oligomers, for example diglycerol, polyethylene glycols, and mixtures thereof.

[0069] According to a preferred embodiment of the invention, said polyol is selected from ethylene glycol, propylene glycol, glycerin, butanediol, pentaerythritol, trimethylolpropane, dipropylene glycol, caprylyl glycol, glycerol, polyglycerols and polyethylene glycols, and mixtures thereof, more preferably dipropylene glycol.

[0070] With the presence of dipropylene glycol, the oil-type inner core has improved stability.

[0071] Preferably, dipropylene glycol is present in the inner core in an amount ranging from 5% by weight to 20% by weight, relative to the total weight of the inner core.

[0072] The oily-type inner core may also include at least one surfactant, preferably a non-ionic surfactant, even better a polyglycerol-based non-ionic surfactant.

[0073] Preferably, the non-ionic polyglycerol-based surfactant is selected from polyglyceryl fatty acid ester.

[0074] It is preferable that the polyglyceryl fatty acid ester have a polyglycerol fraction derived from 2 to 10 glycerols, better still from 4 to 8 glycerols, and even better another 5 to 6 glycerols. In other words, it is preferable for the polyglyceryl fatty acid ester to contain 2 to 10 polyglyceryl motifs, better still 4 to 8 polyglyceryl motifs, and even better still 5 or 6 polyglyceryl motifs.

[0075] The polyglyceryl fatty acid ester may be selected from monoesters, diesters, and triesters of linear or branched fatty acids, saturated or unsaturated, preferably saturated fatty acids, comprising from 2 to 30 carbon atoms, preferably from 4 to 30 carbon atoms, and more preferably from 6 to 30 carbon atoms, such as lauric acid, oleic acid, stearic acid, isostearic acid, capric acid, caprylic acid, and myristic acid.

[0076] The non-ionic surfactant based on polyglycerol can be selected from the following: polyglyceryl mono- or dicaprate comprising 2 to 10 glycerol motifs; polyglyceryl mono- or dioleate comprising 2 to 10 glycerol motifs; polyglyceryl mono- or dicapry comprising 2 to 10 glycerol motifs and their derivatives.

[0077] It is more preferable that the non-ionic polyglycerol-based surfactant be chosen from polyglyceryl-6 dicaprate (PG6 dicaprate), polyglyceryl-6 dioleate (PG6 dioleate), polyglyceryl-6 caprylate (PG6 caprylate), poly-2 polyglyceryl-2 oleate (PG2 oleate) and their combinations.

[0078] In a preferred embodiment, the oil-type inner core comprises retinyl palmitate, at least one polyglycerol-based nonionic surfactant such as polyglyceryl-2 oleate, and at least one oil selected from dicaprylyl carbonate, caprylic / capric triglyceride, and a combination thereof.

[0079] In a more preferred embodiment, the anhydrous inner core comprises retinyl palmitate, at least one polyglycerol-based nonionic surfactant such as polyglyceryl-2 oleate, at least one polyol such as dipropylene glycol, and at least one oil selected from dicaprylyl carbonate, caprylic / capric triglyceride and a combination thereof.

[0080] As used in the present application, a solid-type internal core means that the internal core is in solid form.

[0081] Preferably, the solid-type internal core comprises particles with a particle size of 20-80.

[0082] Preferably, the solid-type internal core further comprises at least one binder.

[0083] As used here, a binder is a viscous substance that helps to separate the assembled materials.

[0084] The binder can be highly water-soluble polymers such as xanthan gum, starch and a combination thereof.

[0085] According to some embodiments, the binder is chosen from among vegetable starches, the gelatin, polyacrylamides, polyvinyl alcohol, polyacrylic acid, polyamines, polyethyleneimines, polyvinylpyrrolidone (PVP) copolymers, polyethylene glycols, cellulose gum and its derivatives such as methylcellulose derivatives, quaternary ammonium cellulose, carboxymethyl cellulose, xanthan gum, agar, pectin gum, guar gum and their derivatives, carboxypolymethylene, and their combinations.

[0086] Preferably, the binder is chosen from xanthan gum, starch, cellulose gum, starch and a combination thereof.

[0087] Preferably, the binder is cellulose gum.

[0088] If present, the binder is present in the solid-type internal core of the present invention in an amount ranging from 0.1% by weight to 15% by weight, or better still from 0.5% by weight to 2% by weight, relative to the total weight of the core according to the present invention.

[0089] Preferably, the solid-type inner core further comprises a water-soluble salt as a pH-correcting agent.

[0090] The water-soluble salt can be, for example, sodium, calcium or potassium salt.

[0091] In some embodiments, the solid-type inner core comprises a water-soluble salt selected from sodium salts, calcium salts, potassium salts, and a combination thereof, preferably selected from sodium citrate, calcium citrate, potassium citrate, and a combination thereof.

[0092] Preferably, the solid-type inner core comprises sodium citrate.

[0093] Where applicable, the water-soluble salt is present in the internal core of type solid of the present invention in such quantity that the pH of the solid-type inner core is in the range of 4-8.

[0094] The solid-type internal core may also include an oil as mentioned above.

[0095] Preferably, the oil is present in the solid-type internal core of the present invention in an amount ranging from 20% by weight to 70% by weight, relative to the total weight of the core according to the present invention.

[0096] In a preferred embodiment, the solid-type inner core comprises ascorbic acid, tocopheryl acetate, sodium citrate, cellulose gum and at least one oil selected from squalane, caprylic / capric glycerides, and a combination thereof.

[0097] Optionally, the solid or oil-type inner core includes a fragrance.

[0098] The fragrance is not particularly limited.

[0099] A person skilled in the art can adjust the quantity of perfume by conventional means.

[0100] Optionally, the solid-type internal core includes a pigment.

[0101] The pigment is not particularly limited.

[0102] A person skilled in the art can adjust the quantity of pigment by conventional means. Water-soluble film

[0103] According to the first aspect, the water-soluble film has a thickness of 25-40 qm.

[0104] Preferably, the water-soluble film has a thickness of 25-30qm.

[0105] Preferably, the water-soluble film can be dissolved in water at temperature ambient (approximately 20°C in 30 seconds).

[0106] Preferably, the water-soluble film is made from a polymer that forms a water-soluble film.

[0107] Preferably, the water-soluble film-forming polymer is selected from polyvinyl pyrolidone, gelatin, collagen, sodium hyaluronate, pullulan, polyvinyl alcohol, hydroxyalkyl (C1-C6) (C1-C6) cellulose and a combination thereof.

[0108] Examples of hydroxy (C1-C6) alkyl (C1-C6) alkylcellulose include hydroxypropyl methylcellulose and ethylhydroxyethylcellulose.

[0109] According to a preferred embodiment, the water-soluble film is made from polyvinyl alcohol.

[0110] The water-soluble film may also include a pigment.

[0111] The pigment is not particularly limited.

[0112] According to a preferred embodiment, the present invention provides a keratin-based skincare capsule comprising, relative to the total weight of the capsule:

[0113] a) an anhydrous inner core comprising from 0.1% by weight to 35% by weight of at least one water-sensitive cosmetic active ingredient and

[0114] b) a water-soluble film made from polyvinyl alcohol with a thickness of 25 to 30 µm enveloping the inner core. Mask

[0115] According to the second aspect, the present invention proposes a treatment mask for keratinous materials, comprising:

[0116] A) a water-insoluble mask fabric and

[0117] B) the capsule according to the present invention integrated into the water-insoluble mask fabric. Water-insoluble mask fabric

[0118] According to the second aspect, the mask according to the present invention comprises a water-insoluble mask fabric.

[0119] For the purposes of the invention, the expression "insoluble in water" means that the tissue of the mask is not soluble in water and does not disintegrate when immersed in water.

[0120] A person skilled in the art can choose a suitable mask fabric and the weight ratio between the mask fabric used and the capsule according to the present invention is based on the nature of the capsule.

[0121] The mask fabric may be a woven or non-woven fabric made of natural fibers such as cotton, paper 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 may be used in combination.

[0122] In some embodiments, the mask fabric is an alginate fabric.

[0123] Alginate fabrics are known in the art and are described in document WO2020001069A1.

[0124] For example, an alginate tissue 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 from 20% by weight to 100% by weight, preferably from 20% by weight to 50% by weight, relative to the total weight of the tissue.

[0125] Preferably, when the mask fabric is an alginate fabric, the capsule 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 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 capsule according to the present invention.

[0126] The mask fabric may consist of one or more layers. If a multi-layer fabric is used, the material of each layer may be identical or different from the others. The multi-layer fabric may be prepared by layering multiple layers made of the materials mentioned above.

[0127] Mask fabric can have a variety of shapes, depending on the intended use and the characteristics of the mask.

[0128] The mask fabric is typically designed to conform to the area of ​​skin on 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 areas of the eyes, nostrils, and mouth.

[0129] Preferably, the weight ratio between the water-insoluble substrate and the capsule is from 1:1 to 1:10. Better still, the weight ratio between the insoluble substrate in water and the capsule goes from 1:1 to 1:15. Preparation and use

[0130] The capsule according to the present invention can be prepared by first preparing the anhydrous inner core and the water-soluble film separately, and then wrapping the inner core with the film.

[0131] The anhydrous inner core can be prepared by mixing all the components for the anhydrous inner core.

[0132] The film can be prepared with a water-soluble film-forming polymer by a molding method well known to those skilled in the art.

[0133] Before film formation, the following ingredients, namely: a solvent and a polyol (such as water, glycerin, ethylene glycol, and a mixture thereof), may be mixed and blended. The mixture may be heated to 70 or 80 °C, for example, 75 °C. The water-soluble film-forming polymer may then be added during a vigorous mixing step to prevent polymer agglomeration. Any optional ingredients may then be added. Optional ingredients such as pigments, fragrance, and preservatives may be added at a temperature ranging from 25 °C to 45 °C.

[0134] For the formation of a film or a "film molding", the film-forming material can be poured into a film drawing machine where a uniform film is stretched onto a rotating belt.

[0135] The capsule can be prepared using a known process.

[0136] In particular, the anhydrous inner core can be cast into the water-soluble film in the form of a capsule and the water-soluble film can be sealed by heating.

[0137] The sealing can be carried out at a temperature between 160 and 200 °C.

[0138] The capsule according to the present invention can be used to care for keratinous materials.

[0139] According to the third aspect, the present invention provides a non-therapeutic method for the care of keratinous materials comprising dissolving the capsule as described above in water or a toner to obtain a composition and applying the composition to the keratinous materials.

[0140] Keratinous materials can be, in particular, the skin.

[0141] According to the fourth aspect, the present invention proposes a non-therapeutic method for the treatment of keratinous materials, comprising the steps of:

[0142] (i) the addition of water or toner to the mask according to the present invention to dissolve the capsule;

[0143] (ii) the application of the mask to keratinous materials;

[0144] (iii) leaving the mask on the keratinous materials for a certain time and

[0145] (iv) the removal of the mask from keratinous materials.

[0146] Keratinous materials include, in particular, the skin.

[0147] The mask as defined above is applied to at least one area of ​​the skin.

[0148] In particular, the composition or mask as defined above is applied to the skin of the face and / or on the skin of the eyes.

[0149] Preferably, the application time is from 5 minutes to 45 minutes, preferably from 10 minutes to 30 minutes. EXAMPLES

[0150] The following examples serve to illustrate the present invention without, however, being limiting in nature.

[0151] The main raw materials used, trade names and their suppliers are listed in Table 1.

[0152] [Tables 1] INCI Name Trade Name Supplier DL CAPRYLYL CARBONATE, CETIOL CC^ BASF OLEATED POLY-GLYCERYL-2 SUNSOFT Q-17D-C (Mo) TAIYO KAGAKU DIPROPYLENE GLYCOL DIPROPYLENE GLYCOL CARE BASF CAPRYLIC / CAPRIC TRIGLYCERIDE PALMESTER 3585^ KLK OLEO RETINYL PALMITATE PALMITATE VITAMIN A 1.7 MIU / G (STABILIZED WITH TOCOPHEROL) DSM NUTRITIONAL PRODUCTS

[0153] Examples of the invention 1 to 2 and Comparative examples 1 to 2

[0154] Capsules of invention examples (El) 1-2 and a comparative example (EC) 1 have been prepared.

[0155] First, internal cores of the oil or solid type of Examples of Invention 1-2 and Comparative Example 1 were prepared from the ingredients indicated in Tables 2 and 3. The quantities in Tables 2 and 3 are given as % by weight of active ingredient relative to the total weight of the internal core.

[0156]

[0157] [Tables 2] Components El. 1% by weight DICAPRYLYL CARBONATE, 48 POLYGLYCERYL-2 OLEATE 6 DIPROPYLENE GLYCOL 9 CAPRYLIC / CAPRIC TRIGLYCERIDE 36.82 RETINYL PALMITATE 0.18 Thickness (sq m) 25 [Tables 3] Components EC. 1 EL 2% by weight % by weight SODIUM CITRATE (and) CELLULOSE GUM1' 31.80 31.80 ASCORBIC ACID (and) YELLOW 62' 32.86 32.86 SQUALANE (and) CAPRYLIC / CAPRIC GLYCERIDES (and) TOCOPHERYL ACETATE3' 35.34 35.34 Thickness (sq m) 20 25

[0158] 1) SODIUM CITRATE GUM (and) CELLULOSE comprises 98% of SODIUM CITRATE and 2% CELLULOSE GUM.

[0159] 2) ASCORBIC ACID (and) YELLOW 6 comprises T ASCORBIC ACID 90.415%, SUCROSE 9.56% and YELLOW 6 / CI 15985 0.025%.

[0160] 3) SQUALANE (and) CAPRYLIC / CAPRIC GLYCERIDES (and) PARFUM (and) TOCOPHERYL ACETATE includes SQUALANE 47.42%, CAPRYLIC / CAPRIC GLYCERIDES 24.69%, DEXTRIN 19.75%, SILICA 4.94%, PARFUM 2.2% and TOCOPHERYL ACETATE 1%.

[0161] The internal oil-type cores as illustrated in Table 2 can be prepared as follows, taking that of inventive example 1 as an example:

[0162] i) add and mix all the ingredients together, heating to 60°C to ensure that all ingredients are melted and mixed evenly to obtain an oil mixture;

[0163] ii) cool the oil mixture to room temperature; and

[0164] iii) fill the oil mixture in a water-soluble polymer film made from polyvinyl alcohol in the form of a capsule and seal at a temperature of 180°C.

[0165] Solid-type inner cores as illustrated in Table 3 can be prepared as follows, taking that of the example of invention 2 as an example:

[0166] i) add and mix all the solid ingredients to ensure that all ingredients are well mixed to obtain a solid mixture;

[0167] ii) place the solid mixture in a water-soluble polymer film made from polyvinyl alcohol in the form of a capsule and seal at a temperature of 180°C. Assessment Stability

[0168] The stability of the water-sensitive cosmetic active ingredient contained in the capsules prepared above was evaluated as follows:

[0169] 1) place the prepared capsules at room temperature (25 °C), 45 and 45 °C, respectively; and

[0170] 2) check the amount of water-sensitive ingredient contained after 2 months.

[0171] The stability of the water-sensitive cosmetic active ingredient will be evaluated as "Successful" if the quantity of the water-sensitive cosmetic active ingredient has decreased by less than 30% by weight after all the stability tests mentioned above, otherwise it will be evaluated as "Failed". Compatibility

[0172] Compatibility was assessed as follows:

[0173] 1) Place the prepared capsules at 4°C, at room temperature (25°C), 37°C, 45°C ❖C, 55 ^C, 45 ❖C / SO % humidity, and by making temperature cycles from -20 to 20 ^C, respectively;

[0174] 2) check the appearance and color of the capsules after 2 months.

[0175] Aspect: it is acceptable if there is no maturation or fusion.

[0176] Colour: It is acceptable if there is no colour change or a slight color change, and it is not acceptable if the color changes from transparent to brownish.

[0177] Compatibility will be classified as "Successful" if the appearance and color are acceptable after two months of storage at all test temperatures, otherwise it will be classified as "Failed".

[0178] The results on the stability and compatibility of each capsule prepared above have been summarized in Table 4.

[0179] [Tables4] ELI Properties El. 2 EC. 1 Stability Success Success Success Compatibilities Success Success Failure

Claims

Demands

1. A keratinous material care capsule, comprising: a) an anhydrous inner core comprising at least one water-sensitive cosmetic active selected from vitamins, and b) a water-soluble film enveloping the inner core made from polyvinyl alcohol, wherein the water-soluble film has a thickness of between 25 and 30 µm.

2. A capsule according to claim 1, wherein the anhydrous inner core is an oil-type inner core or a solid-type inner core, the oil-type inner core comprising a polyol selected from ethylene glycol, propylene glycol, glycerin, butanediol, pentaerythritol, trimethylolpropane, dipropylene glycol, caprylyl glycol, glycerol, polyglycerols and polyethylene glycols, and mixtures thereof, and the solid-type inner core being in a solid form comprising at least one binder selected from vegetable starches, gelatin, polyacrylamides, polyvinyl alcohol, polyacrylic acid, polyamines, polyethyleneimines, polyvinylpyrrolidone (PVP) copolymers, polyethylene glycols, cellulose gum and its derivatives such as methylcellulose derivatives, quaternary ammonium cellulose, carboxymethyl cellulose, gum of xanthan gum, agar-agar, pectin gum,Guar gum and its derivatives, carboxypolymethylene, and combinations thereof; preferably the binder is chosen from xanthan gum, starch, cellulose gum, starch and a combination thereof, more preferably the binder is cellulose gum.

3. Capsule according to claim 2, wherein the oil-type inner core comprises at least one surfactant, preferably a non-ionic surfactant, more preferably a polyglycerol-based non-ionic surfactant, even more preferably a poly-glyceryl fatty acid ester.

4. Capsule according to claim 2, wherein the solid-type inner core further comprises a water-soluble salt selected from sodium salts, calcium salts, potassium salts and a combination thereof, preferably selected from sodium citrate, calcium citrate, potassium citrate and a combination thereof as a pH-correcting agent.

5. Keratin material treatment mask, comprising: A) a water-insoluble mask fabric and B) the capsule according to any one of claims 1 to 4 embedded in the water-insoluble mask fabric.

6. A non-therapeutic method for caring for keratinous materials, comprising the following steps: (i) adding water or a toner to the mask according to claim 5 to dissolve the capsule; (ii) applying the mask to the keratinous materials; (iii) leaving the mask on the keratinous materials for a certain time; and (iv) removing the mask from the keratinous materials.