Sheet-like cosmetic product

Abstract

To provide a clay-based, sheet-like cosmetic product with improved usability.SOLUTION: The present invention relates to a sheet-like cosmetic product, comprising: (A) at least one water soluble / dispersible substrate; and (B) at least one coating layer disposed on the water soluble / dispersible substrate, comprising (b1) at least one clay and (b2) at least one water soluble binder. The cosmetic product offers improved usability, as it can be easily removed from the skin after use.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sheet-form cosmetic material, preferably a sheet-form cosmetic material containing clay. [Background technology]

[0002] Oily skin is caused by the excessive secretion of oily / waxy substances from sebaceous glands. Sebaceous glands are distributed throughout all skin sites except palms and soles, but they are most abundant on the face and scalp. Sebum contains triglycerides, waxes, squalene, and metabolites of adipogenic cells. Sebum keeps hair and skin flexible, but excess sebum can contribute to the concentration of keratinocytes at the opening of sebaceous follicles on the surface of the skin, which causes contraction at the follicular opening, leading to keratinocytes or comedones. This can result in blackheads, milia, significant irritation, redness, tissue damage, and acne.

[0003] The use of mineral clays as medicinal and cosmetic tools has long been popular. Clays are used to absorb excess oil, dirt and toxins from the skin while simultaneously exfoliating and improving circulation to the skin. For example, U.S. Patent Application Publication No. 2006 / 0292108 describes a skin care composition comprised of 10% kaolin.

[0004] Also, clay in powder or ready-made paste form is sold as clay mask or face pack. The term "face pack" as used herein refers to a cream or paste product that is applied as a mask by making a thin layer of the product on the skin for a certain period of time or until the product dries, and then is removed by rubbing or washed off using water. However, the application of such products is a messy process, and consumers need to scrub the skin to remove such products. Upon drying of such clay products, when consumers move their facial muscles, the dried mud tends to fall off the face, soiling the bathroom, clothes, etc., and the user must clean or wash. In addition, generally, after application of such clay masks, consumers also need to use a cleansing product to wash their face.

[0005] WO2015 / 075143 also reports an applicator body composition comprising at least one clay and at least one water-soluble polymer, which may be provided in the form of a face mask. The product of this publication is intended to be applied to the skin and then peeled off from the skin.

[0006] However, there remains a need for the development of clay-based sheet products that have improved usability, particularly those that can be easily removed from the skin after application. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] US Patent Application Publication No. 2006 / 0292108 [Patent Document 2] WO2015 / 075143 [Non-patent literature]

[0008] [Non-Patent Document 1] Kirk-Othmer, Encyclopaedia of Chemical Technology, Vol. 5, p. 544, 2nd ed., John Wiley and Sons, Inc., New York, NY 1964. [Non-Patent Document 2] Clay mineralogy, S. Caillere, S. Henin, M. Rautureau, 2nd edition 1982, Masson Summary of the Invention [Problem to be solved by the invention]

[0009] It is an object of the present invention to provide a clay-based sheet product that has improved usability, particularly one that can be easily removed from the skin after use. [Means for solving the problem]

[0010] The object of the present invention is to (A) at least one water-soluble / dispersible substrate, and (B) at least one coating layer disposed on the water-soluble / dispersible substrate, the coating layer comprising (b1) at least one clay and (b2) at least one water-soluble binder; The above object can be achieved by a sheet-type cosmetic preparation comprising the steps of:

[0011] The product may be for the care and / or conditioning of keratinous materials, such as the skin.

[0012] The product may be a skin mask, preferably a facial mask.

[0013] The (A) water-soluble / dispersible substrate may include a water-soluble / dispersible polymer.

[0014] The water soluble / dispersible polymer may be a water soluble polymer selected from the group consisting of cellulose and its derivatives, polyvinyl alcohol, and mixtures thereof.

[0015] The coating layer content is 1g / m 2 ~200g / m 2 , preferably 5 g / m 2 ~100g / m 2 , more preferably 10 g / m 2 ~70g / m 2 , and even more preferably 15 g / m 2 ~50g / m 2 may be in the range.

[0016] The coating layer may contain the (b1) clay in an amount in the range of 50% by mass to 99.5% by mass, preferably 65% ​​by mass to 99% by mass, more preferably 80% by mass to 98% by mass, and even more preferably 90% by mass to 97% by mass, based on the total mass of the coating layer.

[0017] (b2) The water-soluble binder may be selected from the group consisting of starch, pullulan, cellulose, derivatives thereof, and blends thereof, polyvinyl alcohol, polyvinylpyrrolidone, and mixtures thereof.

[0018] (b2) The water-soluble binder may be different from the water-soluble / dispersible polymer contained in (A) the water-soluble / dispersible base material.

[0019] The coating layer may contain (b2) a water-soluble binder in an amount in the range of 0.1% by mass to 15% by mass, preferably 0.5% by mass to 10% by mass, more preferably 1% by mass to 7% by mass, and even more preferably 2% by mass to 5% by mass, relative to the total mass of the coating layer.

[0020] The coating layer may include at least one polyol.

[0021] The content of polyol in the coating layer may range from 0.001 to 20% by weight, preferably from 0.01 to 15% by weight, more preferably from 0.1 to 10% by weight, and even more preferably from 1 to 5% by weight, relative to the total weight of the coating layer.

[0022] The present invention also provides a method for producing a sheet-type cosmetic preparation according to the present invention, comprising the steps of: (i)(A) ​​preparing at least one water soluble / dispersible substrate; (ii) preparing a coating solution by mixing (b1) at least one clay and (b2) at least one water-soluble binder in at least one solvent; (iii) (A) applying a coating solution onto a water-soluble / dispersible substrate; (iv) drying the applied coating solution to form a coating layer (B) and obtain a sheet-shaped cosmetic; The present invention also relates to a method, comprising:

[0023] The solvent in step (ii) may be selected from linear or branched lower monohydric alcohols, preferably linear or branched lower monohydric alcohols having 1 to 8 carbon atoms, such as ethanol, propanol, butanol, isopropanol, and isobutanol, and combinations thereof.

[0024] The present invention also relates to a non-therapeutic cosmetic method for caring for and / or conditioning keratinous materials, such as the skin, in particular the skin of the face, comprising: (1) wetting a keratinous material; (2) applying the sheet-shaped cosmetic preparation according to the present invention to a wet keratinous material; (3) leaving the applied cosmetic on the keratinous material for a specified period of time; (4) rinsing the cosmetic from the keratinous material with water; or (4') peeling the cosmetic from the keratin material; (5) rinsing any cosmetic residues from the keratin material with water; The present invention also relates to a method, comprising: [Brief description of the drawings]

[0025] [Figure 1] 1 illustrates one embodiment of the present invention for a facial mask. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] As a result of intensive research, the present inventors have surprisingly found that a sheet-like product formed from (A) at least one water-soluble / dispersible substrate and (B) at least one coating layer comprising (b1) at least one clay and (b2) at least one water-soluble binder disposed on the water-soluble / dispersible substrate has improved usability and is easily removed from the skin after application, thus completing the present invention.

[0027] Therefore, the product according to the invention is (A) at least one water-soluble / dispersible substrate, and (B) at least one coating layer disposed on the water-soluble / dispersible substrate, the coating layer comprising (b1) at least one clay and (b2) at least one water-soluble binder; The sheet-type cosmetic material comprises:

[0028] The products, methods, processes and uses according to the invention are described in more detail below.

[0029] [product] The product according to the invention is a cosmetic, preferably a cosmetic for keratinous materials, more preferably a cosmetic for caring for and / or conditioning keratinous materials. Keratinous materials herein mean materials that contain keratin as the main component, examples of which include skin, facial skin, scalp, lips, etc. Preferably, the keratinous material herein is skin, in particular facial skin.

[0030] In one embodiment of the invention, the product according to the invention is a skin care product, in particular a facial skin care product.

[0031] The product according to the present invention comprises (A) at least one water-soluble / dispersible substrate, and (B) at least one coating layer on the water-soluble / dispersible substrate. The (B) coating layer comprises (b1) at least one clay and (b2) at least one water-soluble binder. In other words, the product according to the present invention is formed from (A) at least one water-soluble / dispersible substrate, and (B) a coating layer on the water-soluble / dispersible substrate, comprising (b1) at least one clay and (b2) at least one water-soluble binder. The ingredients in the product are described in detail below.

[0032] (A) Water-soluble / dispersible base material The product according to the invention comprises, as a substrate or carrier, (A) at least one water-soluble / dispersible substrate. A single type of water-soluble / dispersible substrate may be used, but two or more different types of water-soluble / dispersible substrates may also be used in combination.

[0033] The term "water soluble / dispersible substrate" as used herein means a substrate in the form of a sheet, paper, or film that is water soluble / dispersible. The term "water soluble / dispersible" as used herein refers to a material that decomposes and / or dissolves when immersed in water at 25° C. for a period of time ranging from a few seconds or minutes to a few days without agitation, for example. In one embodiment, the "water soluble / dispersible" of the present invention decomposes and / or dissolves when immersed in water at 25° C. for less than 1 minute.

[0034] The water soluble / dispersible substrate may be in the form of fibers, such as woven, knitted, nonwoven fibers, and / or polymeric meshes. The term "nonwoven" is used herein to mean a substrate comprising fibers in which the individual fibers or filaments are randomly arranged in a sheet-like structure and are not woven or knitted.

[0035] The water-soluble / dispersible substrate is made of at least one water-soluble / dispersible polymer, which can be selected from water-soluble polymers.

[0036] Preferably, the water-soluble polymer may be a water-soluble film-forming polymer. Synthetic and / or natural water-soluble film-forming polymers may be used.

[0037] Water soluble film forming polymers for use in the present invention include: - polysaccharides, including starch, pullulan, cellulose, derivatives thereof, and combinations thereof; proteins, for example proteins of vegetable origin, such as wheat proteins or soybean proteins; proteins of animal origin, such as keratins, for example keratin hydrolysates and sulfonic keratins; acrylic polymers or copolymers, such as polyacrylates or polymethacrylates, vinyl polymers, such as polyvinylpyrrolidone, copolymers of methyl vinyl ether and malic anhydride, copolymers of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and vinyl acetate, copolymers of vinylpyrrolidone and caprolactam, or polyvinyl alcohol; anionic, cationic, amphoteric or non-ionic chitin or chitosan polymers, - gum arabic, guar gum, xanthan gum or karaya gum, alginates and carrageenans, - glycoaminoglycan, hyaluronic acid and its compounds, - Shellac resin, Sandarac resin, Dammar oil, Elemis or Copal, - deoxyribonucleic acid, - mucopolysaccharides such as chondroitin sulfate, and mixtures thereof.

[0038] Advantageously, the water-soluble polymer used in the present invention is selected from the group consisting of cellulose and its derivatives, and polyvinyl alcohol, and mixtures thereof. Preferred examples of cellulose derivatives include cellulose ethers, in particular methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, ethylhydroxyethylcellulose, carboxymethylcellulose and quaternized cellulose compounds.

[0039] Commercially available hydroxypropyl methylcellulose (HPMC) polymers include those available from Dow Chemical Co. under the trade names METHOCEL K35, METHOCEL A15LV, METHOCEL Premium E5 LV, and K35 LV.

[0040] The water-soluble / dispersible substrate may additionally comprise at least one water-insoluble polymer.

[0041] The term "water-insoluble" indicates that a material does not dissolve or disintegrate immediately when immersed in water.

[0042] The water insoluble polymer may be in the form of fibers, such as woven, knitted, nonwoven fibers, and / or polymeric meshes. Preferably, the water insoluble polymer is in the form of a nonwoven fiber.

[0043] The water-insoluble polymer may be a natural fiber, a synthetic fiber, or a mixture thereof. Non-limiting examples of synthetic fibers are polyester, polyolefin (polypropylene, polyethylene), polyamide (nylon 6, nylon 66), viscose, acrylic fibers, modacrylic fibers, polyvinylidene chloride, and spandex. Examples of natural fibers include cellulose fibers (e.g., wood pulp fibers, cotton fibers, hemp fibers, jute fibers, and flax fibers), silk, and keratin (e.g., wool fibers, and camel hair fibers).

[0044] In one preferred embodiment of the invention, the water insoluble polymer comprises natural fibers, especially cellulosic fibers such as wood pulp fibers.

[0045] Non-limiting examples of commercially available water-soluble / dispersible substrates include water-soluble paper available from Nippon Paper Papylia Co., Ltd., smartSolve, and Aquashol cooperation, as well as fibrous materials such as non-woven / woven materials made from PVA fibers from Kuraray Co., Ltd. An example of a commercially available water-soluble / dispersible substrate is water-soluble paper sold under the name 30MDP available from Nippon Paper Papylia Co., Ltd.

[0046] The thickness of the water-soluble / dispersible base material is not particularly limited, but in general, the water-soluble / dispersible base material has a thickness in the range of 0.01 mm to 0.7 mm, more preferably 0.02 mm to 0.5 mm, and even more preferably 0.03 mm to 0.2 mm.

[0047] The water-soluble / dispersible substrate can be made by conventional paper-making processes or any type of film casting technique.

[0048] (B) Coating layer The article of manufacture according to the present invention comprises at least one coating layer (B) disposed on the (A) water-soluble / dispersible substrate. One coating layer may be disposed on one side of the (A) water-soluble / dispersible substrate, or two coating layers may be disposed on both sides of the (A) water-soluble / dispersible substrate.

[0049] Preferably, the coating layer is disposed on one side of the (A) water-soluble / dispersible substrate. In this embodiment, the product of the present invention comprises one coating layer.

[0050] The coating layer content is 1 g / m2 of the sheet-type cosmetic material. 2 More than 5g / m 2 More preferably, 10 g / m 2 More preferably, 15 g / m 2 or more and / or 200 g / m2 Less than 100 g / m 2 Less than 70 g / m 2 or less, and even more preferably 50 g / m 2 It may be the following.

[0051] The coating layer content is 1 g / m2 of the sheet-type cosmetic material. 2 ~200g / m 2 , preferably 5 g / m 2 ~100g / m 2 , more preferably 10 g / m 2 ~70g / m 2 , and even more preferably 15 g / m 2 ~50g / m 2 may be in the range.

[0052] The coating layer comprises (b1) at least one clay and (b2) at least one water-soluble binder. In other words, (b1) the clay and (b2) the water-soluble binder are applied and deposited or coated on (a) the water-soluble / dispersible substrate. The components in the coating layer are described in detail below.

[0053] (b1) Clay The coating layer of the present invention comprises (b1) at least one clay. A single type of clay may be used, or two or more different types of clay may be used in combination.

[0054] The term "clay" as used herein refers to a naturally occurring material composed primarily of fine-grained minerals, which is generally plastic at the appropriate moisture content and hardens when dried or fired. Clays usually contain phyllosilicates, but clays may contain other materials that impart plasticity and harden when dried or fired. Associated phases in clays may include materials that do not impart plasticity and organic matter. A common definition is that given in the Penguin Dictionary of Science: "a finely divided rock material whose constituent minerals are various silicates, mainly of magnesium or aluminum origin." Clays are classified as kaolinite (typically [Si4]Al4O10 (OH) 8.n H2O (n=0 or 4)), illite (typically M x [Si 6.8 Al 1.2 ]Al3Fe 0.025 Mg 0.75 O 20 (OH)4), vermiculite (typically M x [Si7Al]AlFe 0.05 Mg 0.5 O2(OH)4), smectites (typically M x [Si8]Al 3.2 Fe 0.2 Mg 0.6 O2(OH)4), and chlorite (typically (Al(OH) 2.55 )4[Si 6.8 AlO 1.2}Al 3.4 Mg 0.6 ) 20 (defined as (OH)4).

[0055] Another definition frequently used by chemists is "a natural deposit or sedimentary rock, composed of one or more minerals and accessory compounds, the bulk of which is usually rich in hydrated aluminum silicates, iron or magnesium, hydrated alumina, or iron oxide, and which consists mainly of particles of colloidal or near-colloidal size, and which usually exhibit plasticity when sufficiently crushed and wetted" (see Kirk-Othmer, Encyclopaedia of Chemical Technology, Vol. 5, p. 544, 2nd ed., John Wiley and Sons, Inc., New York, NY 1964). Examples of clays are given in the book "Clay mineralogy, S. Caillere, S. Henin, M. Rautureau, 2nd ed. 1982, Masson". Clays may be of natural or synthetic origin.

[0056] Hydrophilic clays include smectites, such as saponite, hectorite, montmorillonite, bentonite, beidellite.Hydrophilic clays include synthetic hectorites (also called laponites), such as the products sold by BYK-Chemie under the names Laporte Laponite XLG, Laponite RD, Laponite RDS (these products are sodium and magnesium silicates, especially sodium, lithium, and magnesium), bentonites, such as the products sold under the name Bentone® HC Rheox, aluminum products such as magnesium silicates and hydrates sold by Vanderbilt Company as ultra Veegum®, Veegum® HS, Veegum® DGT, or calcium silicates, especially synthetic forms, sold by Imerys under the name Micro-cel® C.

[0057] Fuller's earth consists primarily of hydrated aluminum silicates that contain metal ions such as magnesium, sodium and calcium within their structure. Montmorillonite is the primary clay mineral in Fuller's earth, but other components may include other minerals such as kaolinite, attapulgite, and palygorskite.

[0058] By lipophilic clays is meant clays which swell in a lipophilic medium, forming a colloidal dispersion, such as hectorite modified with ammonium distearyldimethylammonium chloride (CTFA name: disteardimonium hectorite), sold under the name "Bentone 38 CE" by the company Rheox or under the name Bentone® 38V by the company ELEMENTIS. 10 ~C 22 Examples of modified clays include modified magnesium silicate (Rheox Bentone gel VS38), hectorite, etc.

[0059] The source of such clays can be natural or synthetic mineral clays such as hectorite, bentonite, and their quaternized derivatives, for example obtained by reacting minerals with quaternary ammonium compounds such as stearalkonium bentonite, hectorite, quaternized hectorites such as quaternium-18 hectorite, carbonates such as propylene carbonate, bentones, and the like.

[0060] Non-limiting examples of clays that can be used in the present invention include Fuller's earth, Pinatubo volcanic ash mud from the Philippines, Aleppo clay from Syria, Tiga Island volcanic mud from Malaysia, Nha Trang mud from Vietnam, Korean white kaolinite, Korean loess, Jeju volcanic clay from Korea, Kwanzi Ling mud from Taiwan, Wudalianchi volcanic mud from China, black mud from Yuncheng Salt Lake from China, Danto Village mineral mud from China, china clay (kaolin), Chinese Maifan stone, Beppu Onsen Fango from Japan, Kucha from Japan, Tanakura clay from Japan, Cambrian blue clay from Russia, Blue Lagoon mud from Iceland, Saki Lake mud from Ukraine, Karlovy Vary Marsh mud from the Czech Republic, Hévíz Georgikon Marsh mud from Hungary, These include: Alpine Bog Mud from Austria, Bad Wilsnak Mud from Germany, Bavarian Mineral Salt Mine Mud from Germany, Freiburg Volcanic Ash from Germany, Santorini Mud from Greece, Mar Menor Mud from Spain, Ischia Volcanic Mud from Italy, Euganean Thermal Mud from Italy, Yellow Clay - Illite from France, Green Clay - Montmorillonite from France, Calistoga Mud from the USA, Sacred Clay and Ormalite from the USA, Redmond Clay from the USA, Arctic Mineral Mud from Canada, Tulum Maya Clay from Mexico, Glacial Clay from Canada, Amazonian White Clay from Brazil, El Tsirante Volcanic Thermal Mud from Argentina, Healing Clay from Africa, and Olive Green Clay from Australia.

[0061] The content of clay in the coating layer of the present invention may be 50% by weight or more, preferably 65% ​​by weight or more, more preferably 80% by weight or more, even more preferably 90% by weight or more, and / or generally 99.5% by weight or less, preferably 99% by weight or less, more preferably 98% by weight or less, even more preferably 97% by weight or less, based on the total weight of the coating layer. Any combination of the upper and lower values ​​can be used.

[0062] The coating layer of the present invention may contain clay in an amount in the range of 50% by mass to 99.5% by mass, preferably 65% ​​by mass to 99% by mass, more preferably 80% by mass to 98% by mass, and even more preferably 90% by mass to 97% by mass, based on the total mass of the coating layer.

[0063] (b2) Water-soluble binder The coating layer of the present invention includes (b2) at least one water-soluble binder. A single type of water-soluble binder may be used, or two or more different types of water-soluble binders may be used in combination.

[0064] The water-soluble binder may function to adhere the (b1) clay to the coating layer, and in particular to adhere the (b1) clay to the (A) water-soluble / dispersible substrate.

[0065] In a preferred embodiment, the (b2) water-soluble binder comprises at least one polar polymer. In another preferred embodiment, the (b2) water-soluble binder is selected from water-soluble film-forming polymers. Examples of the water-soluble film-forming polymers used in the present invention include: - polysaccharides, including starch, pullulan, cellulose, derivatives thereof, and combinations thereof; proteins, for example proteins of vegetable origin, such as wheat proteins or soybean proteins; proteins of animal origin, such as keratins, for example keratin hydrolysates and sulfonic keratins; acrylic polymers or copolymers, such as polyacrylates or polymethacrylates, vinyl polymers, such as polyvinylpyrrolidone, copolymers of methyl vinyl ether and malic anhydride, copolymers of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and vinyl acetate, copolymers of vinylpyrrolidone and caprolactam, or polyvinyl alcohol; anionic, cationic, amphoteric or non-ionic chitin or chitosan polymers, - gum arabic, guar gum, xanthan gum or karaya gum, alginates and carrageenans, - glycoaminoglycan, hyaluronic acid and its compounds, - Shellac resin, Sandarac resin, Dammar oil, Elemis or Copal, - deoxyribonucleic acid, - mucopolysaccharides such as chondroitin sulfate, and mixtures thereof.

[0066] Advantageously, the water-soluble film-forming polymer is selected from the group consisting of starch, pullulan, cellulose, derivatives thereof and blends thereof, polyvinyl alcohol, polyvinylpyrrolidone, and mixtures thereof.

[0067] The (b2) water-soluble binder may be the same as or different from the water-soluble / dispersible polymer that forms the (a) water-soluble / dispersible substrate. These materials can be distinguished from each other by considering their function and / or state. Specifically, the water-soluble / dispersible polymer in the (a) water-soluble / dispersible substrate forms the substrate, i.e., this polymer is part of the substrate, while the (b2) water-soluble binder acts to adhere the (b1) clay to the substrate. Those skilled in the art can easily distinguish between them by analyzing the product of the present invention. For example, the (b2) water-soluble binder can be in direct contact with the (b1) clay and present on the surface of the (b1) clay. On the other hand, the water-soluble / dispersible polymer in the (a) water-soluble / dispersible substrate is located inside the substrate.

[0068] In one embodiment of the present invention, (b2) the water-soluble binder is different from (a) the water-soluble / dispersible polymer that forms the water-soluble / dispersible matrix.

[0069] The content of the water-soluble binder in the coating layer of the present invention may be 0.1% by weight or more, preferably 0.5% by weight or more, more preferably 1% by weight or more, even more preferably 2% by weight or more, and / or generally 15% by weight or less, preferably 10% by weight or less, more preferably 7% by weight or less, even more preferably 5% by weight or less, based on the total weight of the coating layer. Any combination of the upper and lower values ​​can be used.

[0070] The coating layer of the present invention may contain a water-soluble binder in an amount ranging from 0.1% by mass to 15% by mass, preferably from 0.5% by mass to 10% by mass, more preferably from 1% by mass to 7% by mass, and even more preferably from 2% by mass to 5% by mass, relative to the total mass of the coating layer.

[0071] (Other ingredients) The coating layer of the present invention may contain optional ingredients apart from (b1) the clay and (b2) the water-soluble binder.

[0072] - Beauty active ingredients The coating layer of the present invention may comprise at least one cosmetic active ingredient. A single type of cosmetic active ingredient may be used, or two or more different types of cosmetic active ingredients may be used in combination.

[0073] The cosmetic active may be a skin care agent, which may include whitening agents, brightening agents, antioxidants, cleansing agents, free radical scavengers, moisturizing agents, skin color altering agents, anti-acne agents, anti-aging agents, anti-wrinkle agents, anti-inflammatory agents, skin texture treatment agents, antiperspirants, beauty agents, antibacterial agents, cooling agents, sweat absorbing agents, nourishing agents, sebum absorbing agents, oil absorbing agents, and moisture absorbing agents, and any combination thereof.

[0074] Non-limiting examples of skin whitening or brightening agents include, but are not limited to, skin color altering pigments, reflective particulate materials, soft focus agents, and any mixtures thereof.

[0075] Skin-tone altering agents may be selected from skin-tone altering pigments including, but not limited to, talc, mica, silica, titanium oxide, zinc oxide, and / or titanium oxide coated mica, borosilicates; hydrophobically modified zinc oxide, hydrophobically modified titanium dioxide, titanium oxide-zinc composites.

[0076] Examples of antioxidants, anti-inflammatory and / or cooling agents and / or sweat absorbing agents for use in the present invention include, but are not limited to, vitamin C, vitamin E, derivatives of vitamin C and vitamin D, lycopene, carotene, lecithin, rice bran lipids, rice bran oil, menthol; yogurt, silicified menthol, menthyl lactate; almond oil; peanut oil; sunflower oil; horsegram flour; olive oil; fumed or non-fumed silica, hydrophobically modified silica, hydrophilically modified silica, and any mixtures / composites thereof.

[0077] The amount of the cosmetically active ingredient in the coating layer of the present invention is not particularly limited, but may generally be in the range of 0.01% by mass to 10% by mass, preferably 0.05% by mass to 5% by mass, and more preferably 0.1% by mass to 3% by mass, relative to the total mass of the coating layer. In one embodiment of the present invention, the coating layer does not contain a cosmetically active ingredient.

[0078] - Polyol The coating layer of the present invention may comprise at least one polyol. A single type of polyol may be used, but two or more different types of polyols may be used in combination.

[0079] The term "polyol" as used herein means an alcohol having two or more hydroxyl groups, and does not include sugars or their derivatives. Derivatives of sugars include sugar alcohols obtained by reducing one or more carbonyl groups of a sugar, and sugars or sugar alcohols in which the hydrogen atom in one or more hydroxyl groups is replaced with at least one substituent, such as an alkyl group, a hydroxyalkyl group, an alkoxy group, an acyl group, or a carbonyl group.

[0080] The polyols in the present invention can function as plasticizers, increasing the flexibility and strength of the product, and in some cases the polyols can provide skin conditioning benefits.

[0081] The polyol is a C2-C hydroxyl group containing at least two hydroxyl groups, preferably 2 to 5 hydroxyl groups. 24 It may be a polyol, preferably a C2-C9 polyol. The polyol may be selected from glycerin and its derivatives, and glycols and their derivatives. The polyol may be selected from glycerin, diglycerin, polyglycerin, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, pentylene glycol, hexylene glycol, C6-C 24 It may be selected from the group consisting of polyethylene glycol, 1,3-propanediol, 1,4-butanediol, and 1,5-pentanediol, dextrin, and sorbitol.

[0082] In one preferred embodiment, the polyol is selected from glycols such as glycerin, ethylene glycol, propylene glycol, butylene glycol, and diethylene glycol, dextrin, and sorbitol.

[0083] The content of the polyol in the coating layer of the present invention is not particularly limited, but may generally be in the range of 0.001 to 20% by mass, preferably 0.01 to 15% by mass, more preferably 0.1 to 10% by mass, and even more preferably 1 to 5% by mass, based on the total mass of the coating layer. In one embodiment of the present invention, the coating layer does not contain a polyol.

[0084] - dye The coating layer of the present invention may include at least one dye. A single type of dye may be used, or two or more different types of dyes may be used in combination.

[0085] The dyes that can be used in the present invention can be inorganic or organic dyes.Preferably, the dyes include at least one inorganic dye, such as pigments and lakes.The dyes can include titanium dioxide, iron oxide yellow, iron oxide red, iron oxide black, and caramel, carmine, carbon black, D&C Red 7 Lake, FD&C Yellow 5 Lake, FD&C Yellow dyes, FD&C Blue 1 dyes.

[0086] The amount of the dye in the coating layer of the present invention is not particularly limited, but may generally be in the range of 0.001% by mass to 10% by mass, preferably 0.005% by mass to 5% by mass, and more preferably 0.01% by mass to 1% by mass, based on the total mass of the coating layer. In one embodiment of the present invention, the coating layer does not contain a dye.

[0087] - Optional Additives The coating layer of the present invention may also contain any optional additives commonly used in the cosmetic field, for example selected from anionic, cationic, nonionic or amphoteric surfactants, dispersants, fragrances, neutralizing agents, preservatives, chelating agents, and mixtures thereof.

[0088] In one embodiment of the present invention, the product according to the present invention is a skin care product, in particular a facial skin care product. In one embodiment, the sheet-type cosmetic is for treating or caring for oily skin, for example, for treating or caring for oily facial skin.

[0089] In particular, products according to the present invention can be applied to the moistened skin surface and absorb impurities, sebum, and excess oil from the skin.

[0090] In one embodiment, the product is for imparting a matte feel to the skin.

[0091] In one embodiment, the product is for relaxing beauty care.

[0092] In one embodiment, the product is for refreshing skin care.

[0093] Additionally, the present invention may also provide the benefits of oil control, blackhead removal and / or pore reduction on keratinous materials, and may impart brightness to keratinous materials.

[0094] The functionality of the products of the present invention depends mainly on the activity of the active ingredients. Moisturizing, whitening and anti-aging are the most common functionalities of such products, especially facial masks or facial pads.

[0095] Additionally, other skin care actives for cosmetic benefits, such as whitening, anti-wrinkle, etc., may be present or added to the coating layer, which may be released to the skin during application time.

[0096] The sheet-form cosmetic material of the present invention generally has a thickness in the range of 0.01 mm to 1 mm, more preferably 0.05 mm to 0.5 mm, and even more preferably 0.07 mm to 0.12 mm.

[0097] The product can have any desired shape depending on the intended use. The most common form of distribution of the product is folded and packaged in a single-use sachet. In some cases, the product is distributed in the form of a roll pack. Such a roll pack comprises a substrate roll with a plurality of products in a predetermined shape, for example a plurality of facial masks. The product can be applied onto the application body after the application body is separated from the roll pack or any other packaging.

[0098] The shape of the product depends on its targeted functionality and target zone. One example of the use of the product can be in the form of a facial mask or facial pad, which can be cut to the shape of the face, with slits for the eyes, mouth and nose. The product can be selected, for example, from among face masks, wipes and pads.

[0099] In one embodiment, the product is a skin mask.

[0100] In one embodiment, the product is a facial mask.

[0101] Figure 1 shows an embodiment of the present invention, in which the facial mask is composed of two parts before use. In this embodiment, the facial mask can be cut into two parts, an upper part and a lower part, to facilitate easy application to the upper face and the lower face, respectively. In such a two-part face mask, there is an upper part intended to be placed on the upper face and a lower part intended to be placed on the lower face.

[0102] [Manufacturing method] The present invention also relates to a method for producing the sheet-form cosmetic preparation according to the present invention.

[0103] Preferably, the method for producing a sheet-type cosmetic preparation according to the present invention comprises the steps of: (i)(A) ​​preparing at least one water soluble / dispersible substrate; (ii) preparing a coating solution by mixing (b1) at least one clay and (b2) at least one water-soluble binder in at least one solvent; (iii)(A) ​​applying a coating solution onto a water-soluble / dispersible substrate; and (iv) drying the applied coating solution to form a coating layer (B) and obtain a sheet-shaped cosmetic; Includes.

[0104] Step (i) is the preparation of (a) at least one water-soluble / dispersible substrate. The (a) water-soluble / dispersible substrate is the same as that described in the "Product" section above, and therefore the same description may be applied to the (a) water-soluble / dispersible substrate herein.

[0105] Step (ii) is the preparation of a coating solution by mixing (b1) at least one clay and (b2) at least one water-soluble binder in at least one solvent. (b1) at least one clay and (b2) at least one water-soluble binder are the same as those described in the "Product" section above, and therefore the same description may be applied to (b1) at least one clay and (b2) at least one water-soluble binder here.

[0106] The solvent used in step (ii) is not particularly limited, but is preferably selected from solvents other than water. Non-limiting examples of the solvent include linear or branched lower monohydric alcohols, preferably linear or branched lower monohydric alcohols having 1 to 8 carbon atoms, such as ethanol, propanol, butanol, isopropanol, and isobutanol, and combinations thereof.

[0107] The amount of clay in the coating solution may be 1% by weight or more, preferably 5% by weight or more, more preferably 10% by weight or more, even more preferably 20% by weight or more, based on the total weight of the solution. The amount of clay in the coating solution may be 60% by weight or less, preferably 55% by weight or less, more preferably 50% by weight or less, even more preferably 45% by weight or less, based on the total weight of the solution. Any combination of the upper and lower values ​​can be used.

[0108] The coating solution may contain clay in an amount ranging from 1% to 60% by weight, preferably from 5% to 55% by weight, more preferably from 10% to 50% by weight, and even more preferably from 20% to 45% by weight, based on the total weight of the solution.

[0109] The amount of water-soluble binder in the coating solution may be 0.1% by weight or more, preferably 0.3% by weight or more, more preferably 0.5% by weight or more, even more preferably 0.7% by weight or more, based on the total weight of the solution. The amount of water-soluble binder in the coating solution may be 20% by weight or less, preferably 15% by weight or less, more preferably 10% by weight or less, even more preferably 5% by weight or less, based on the total weight of the solution. Any combination of the upper and lower values ​​can be used.

[0110] The coating solution may contain the water-soluble binder in an amount ranging from 0.1% to 20% by weight, preferably from 0.3% to 15% by weight, more preferably from 0.5% to 10% by weight, and even more preferably from 0.7% to 5% by weight, relative to the total weight of the solution.

[0111] In one embodiment of the present invention, the amount of polyol in the coating solution may be 0.1% by weight or more, preferably 0.5% by weight or more, more preferably 0.5% by weight or more, even more preferably 1.5% by weight or more, based on the total weight of the solution. The amount of polyol in the coating solution may be 20% by weight or less, preferably 15% by weight or less, more preferably 10% by weight or less, even more preferably 5% by weight or less, based on the total weight of the solution. Any combination of the upper and lower values ​​can be used.

[0112] In one embodiment of the present invention, the coating solution may contain polyol in an amount ranging from 0.1% to 20% by weight, preferably from 0.5% to 15% by weight, more preferably from 1% to 10% by weight, and even more preferably from 1.5% to 5% by weight, based on the total weight of the solution.

[0113] In one embodiment of the invention, the coating solution comprises less than 5% by weight, preferably less than 3% by weight, more preferably less than 1% by weight, even more preferably less than 0.5% by weight, especially less than 1% by weight, of water, based on the total weight of the coating solution. In another embodiment of the invention, the coating solution is anhydrous.

[0114] Step (ii) may comprise adding one or more optional ingredients to the coating solution, such as cosmetic active ingredients, polyols, dyes, and / or optional additives as described above. Thus, the coating solution may comprise one or more optional ingredients selected from cosmetic active ingredients, polyols, dyes, and optional additives.

[0115] The method for mixing the components is not particularly limited, and any conventional mixing means may be used, such as mixing with a stirrer and / or homogenizer.

[0116] Step (iii) is a step of applying the coating solution onto the (A) water-soluble / dispersible substrate. The method of applying the coating solution onto the (A) water-soluble / dispersible substrate is not particularly limited, and any conventional method may be used. For example, the coating solution can be applied onto the substrate by any wet coating method such as dip coating, knife coating, bar coating, curtain coating, and screen printing.

[0117] Preferably, the coating solution is applied to both sides of the (A) water-soluble / dispersible substrate, and thus the product of the present invention comprises two coating layers.

[0118] Step (iv) is a step of drying the applied coating solution to form a coating layer (B), thereby obtaining a sheet-shaped cosmetic. The drying temperature of the coating layer may generally be in the range of 40° C. to 200° C., preferably 40° C. to 100° C., and more preferably 40° C. to 70° C. The drying time of the coating layer may generally be in the range of several seconds, for example, 1 second, 2 seconds, 3 seconds, 4 seconds, or 5 seconds to 30 minutes, preferably several seconds to 15 minutes, and more preferably several seconds to 5 minutes.

[0119] The dried product of the present invention can be molded according to any desired shape, which can be achieved by cutting the sheet product into the desired shape.

[0120] [Cosmetic methods and uses] The present invention also relates to a non-therapeutic method or use, preferably a non-therapeutic cosmetic method or use, more preferably a cosmetic method or use for caring for and / or conditioning keratinous materials, such as the skin, in particular the skin of the face.

[0121] In one embodiment of the invention, the invention relates to a cosmetic method for caring for and / or conditioning keratinous materials, such as the skin, in particular the skin of the face, comprising: (1) wetting a keratinous material; (2) applying the sheet-like cosmetic preparation of the present invention to a wet keratinous material; (3) leaving the applied cosmetic on the keratinous material for a specified period of time; (4) rinsing the cosmetic from the keratinous material with water; or (4') peeling the cosmetic from the keratin material; (5) rinsing any cosmetic residues from the keratin material with water; The present invention relates to a method comprising the steps of:

[0122] In another embodiment of the present invention, the present invention relates to use of a sheet-type cosmetic for caring for and / or conditioning keratinous materials, such as skin, particularly facial skin, comprising: (1) wetting a keratinous material; (2) applying the sheet-like cosmetic preparation of the present invention to a wet keratinous material; (3) leaving the applied cosmetic on the keratinous material for a specified period of time; (4) rinsing the cosmetic from the keratinous material with water; or (4') peeling the cosmetic from the keratin material; (5) rinsing any cosmetic residues from the keratin material with water; Including, regarding use.

[0123] Step (1) is a step of wetting or moisturizing the keratinous material to be cared for or conditioned in order to wet the keratinous material. For this purpose, any type of composition containing water may be applied to the keratinous material, such as an aqueous solution, a toner, a micellar water, a lotion, a milk, a paste, a serum, a suspension, a dispersion, an emulsion, etc. The composition may contain cosmetically acceptable ingredients or cosmetically active ingredients as described above.

[0124] In one embodiment of the invention, the composition applied to the keratinous materials in step (1) is water. In this embodiment, step (1) is the application of water to the keratinous materials to be cared for or conditioned.

[0125] Step (2) is a step of applying the sheet-like cosmetic preparation of the present invention to the wet keratinous material treated in step (1). This step can be carried out, for example, by placing the sheet-like cosmetic preparation on the keratinous material wetted in step (1).

[0126] Step (3) is a step of leaving the cosmetic applied onto the keratinous material for a specific time to dry the cosmetic. This step may be a step of waiting a sufficient time, called the "application time", after placing the cosmetic in contact with the keratinous material until the cosmetic according to the present invention dries naturally.

[0127] The standing time in step (3) may be in the range of 1 minute to 30 minutes, preferably 3 minutes to 25 minutes, more preferably 5 minutes to 20 minutes, and even more preferably 10 minutes to 20 minutes. Step (3) is carried out at room temperature (25° C.) and atmospheric pressure (10 5 The method can be carried out at 100 rpm (Pa).

[0128] In step (3), the cosmetic absorbs impurities, sebum and excess oil from the keratin materials.

[0129] In one embodiment of the present invention, the cosmetic applied to the keratinous material is removed by rinsing it off from the keratinous material with water in step (4) after step (3). The sheet-shaped cosmetic of the present invention is made from (A) at least one water-soluble / dispersible substrate and (B) at least one coating layer disposed on the water-soluble / dispersible substrate, the coating layer comprising (b1) at least one clay and (b2) at least one water-soluble binder. For example, the cosmetic can be rinsed off by rubbing or washing off with hands using water.

[0130] In another embodiment of the present invention, the cosmetic applied to the keratinous material is peeled off from the keratinous material in step (4') after step (3). Then, the cosmetic residue remaining on the keratinous material is rinsed off with water in step (5). The cosmetic residue can be rinsed off by scrubbing or washing off with hands using water. EXAMPLES

[0131] The present invention will be described in more detail by examples, which should not be construed as limiting the scope of the present invention. Each example is carried out at room temperature (25° C.) and atmospheric pressure (10 5 The experiment was carried out at 100 rpm (Pa).

[0132] (Examples 1 and 2) The sheet-type cosmetic according to the present invention was prepared according to the following protocol. First, a water-soluble substance was prepared in the form of paper 30MDP (thickness: 0.065 mm) obtained from Nippon Paper Papylia Co., Ltd. Then, a coating solution was prepared by mixing kaolin, polyvinylpyrrolidone, isopropyl alcohol, and glycerin (if present) using a homogenizer in the blending ratios shown in Table 1. All values ​​shown in Table 1 are based on the "mass %" of the active ingredient. Each of the obtained coating solutions was applied to the water-soluble substance by bar coating method on one side of the substrate. The substrate was then dried at 70°C for a few seconds to obtain a sheet-type cosmetic according to the present invention. The amount of the coating layer was 30 g / m2 of the sheet-type cosmetic. 2 The thickness of the sheet-type cosmetic material was approximately 0.1 mm.

[0133] [Table 1]

[0134] The obtained sheet-like cosmetic material was cut into the shape of a facial mask as shown in FIG.

[0135] Three experts applied the cosmetics according to the following process: (1) The experts wet their own facial skin with water. (2) Applying a sheet-type cosmetic preparation in the form of a facial mask to a wet face; (3) Leave the cosmetic applied to your face for 15 minutes. (4) Rinse the makeup off your face by rubbing with your hands using water.

[0136] The cosmetic was easily removed from the faces of each expert by simply rubbing with hands using water. Excess sebum and oil were successfully removed from the faces of each expert. Also, at least a matte finish was observed.

Claims

1. (A) at least one water-soluble / dispersible substrate, and (B) at least one coating layer disposed on the water-soluble / dispersible substrate, the coating layer comprising (b1) at least one clay and (b2) at least one water-soluble binder; A sheet-type cosmetic comprising:

2. 10. The sheet-form cosmetic according to claim 1, for caring for and / or conditioning keratinous materials, such as skin.

3. 2. The sheet-form cosmetic according to claim 1, which is a skin mask, preferably a facial mask.

4. 2. The sheet-form cosmetic preparation according to claim 1, wherein the water-soluble / dispersible base material (A) comprises a water-soluble / dispersible polymer.

5. 5. The sheet-form cosmetic preparation according to claim 4, wherein the water-soluble / dispersible polymer is a water-soluble polymer selected from the group consisting of cellulose and its derivatives, polyvinyl alcohol, and mixtures thereof.

6. The coating layer contains 1g / m of cosmetic material. 2 ~200g / m 2 , preferably 5 g / m 2 ~100g / m 2 , more preferably 10 g / m 2 ~70g / m 2 , and even more preferably 15 g / m 2 ~50g / m 2 2. The sheet-form cosmetic according to claim 1, wherein the thickness of the sheet-form cosmetic is in the range of

7. 2. The sheet-form cosmetic preparation according to claim 1, wherein the coating layer comprises the (b1) clay in an amount ranging from 50% to 99.5% by mass, preferably from 65% to 99% by mass, more preferably from 80% to 98% by mass, and even more preferably from 90% to 97% by mass, relative to the total mass of the coating layer.

8. 2. The sheet-form cosmetic preparation according to claim 1, wherein the (b2) water-soluble binder is selected from the group consisting of starch, pullulan, cellulose, derivatives thereof, and blends thereof, polyvinyl alcohol, polyvinylpyrrolidone, and mixtures thereof.

9. 5. The sheet-form cosmetic preparation according to claim 4, wherein the water-soluble binder (b2) is different from the water-soluble / dispersible polymer contained in the water-soluble / dispersible base material (A).

10. 2. The sheet-form cosmetic preparation according to claim 1, wherein the coating layer comprises (b2) the water-soluble binder in an amount ranging from 0.1% to 15% by mass, preferably from 0.5% to 10% by mass, more preferably from 1% to 7% by mass, and even more preferably from 2% to 5% by mass, relative to the total mass of the coating layer.

11. 2. The sheet-form cosmetic according to claim 1, wherein the coating layer comprises at least one polyol.

12. 12. The sheet-form cosmetic preparation according to claim 11, wherein the content of the polyol in the coating layer is in the range of 0.001 to 20% by mass, preferably 0.01 to 15% by mass, more preferably 0.1 to 10% by mass, and even more preferably 1 to 5% by mass, relative to the total mass of the coating layer.

13. A method for producing the sheet-type cosmetic material according to any one of claims 1 to 12, comprising: (i)(A) ​​preparing at least one water-soluble / dispersible substrate; (ii) preparing a coating solution by combining (b1) at least one clay and (b2) at least one water-soluble binder in at least one solvent; (iii)(A) ​​applying a coating solution onto a water-soluble / dispersible substrate; and (iv) drying the applied coating solution to form a coating layer (B) and obtain a sheet-shaped cosmetic; A method comprising:

14. 14. The process of claim 13, wherein the solvent in step (ii) is selected from linear or branched lower monohydric alcohols, preferably linear or branched lower monohydric alcohols having 1 to 8 carbon atoms, such as ethanol, propanol, butanol, isopropanol, and isobutanol, and combinations thereof.

15. A non-therapeutic cosmetic method for caring for and / or conditioning keratinous materials, such as skin, in particular facial skin, comprising: (1) wetting a keratinous material; (2) applying the sheet-form cosmetic according to any one of claims 1 to 12 to a wet keratinous material; (3) leaving the applied cosmetic on the keratin material for a specific period of time; (4) rinsing the cosmetic from the keratinous material with water; or (4') peeling the cosmetic material from the keratin material; (5) rinsing cosmetic residue from the keratin material with water; A method comprising:

Images