Cosmetic laminated sheets

Abstract

One aspect of the present invention relates to a cosmetic laminate comprising a thin film sheet having a thickness of 10 nm to 10 μm and being water-permeable, and a water-absorbing support having a water content of 4.4 g or more relative to 1 g of the support.

Description

Technical Field

[0001] This invention relates to laminated sheets for cosmetic use. Background Technology

[0002] For cosmetic purposes, it is a well-known method to simply wrap the face with a sheet-like mask in which cosmetic ingredients are impregnated. For example, Patent Document 1 discloses a mask characterized in that a liquid-impregnated substrate containing cosmetic liquid and a liquid barrier film are overlapped.

[0003] In addition, in recent years, the application of sheets made of nanofibers in the medical and cosmetic fields has also been reported. For example, in Patent Document 2, as a method for forming a transparent film with high adhesion to the skin and that the skin can recognize, a method for forming a film on the skin surface using nanofiber sheets is disclosed, which includes the following steps: (1) applying a sheet-clearing agent containing 2% or more of one or two kinds of oil to the skin (1); and (2) transferring a white nanofiber sheet with a water-insoluble polymer as the main component onto the skin after the application step (1) (2).

[0004] Furthermore, in Patent Document 3, a silk core protein nanofilm containing silk core protein and having a water contact angle of 30° or more was disclosed as a silk core protein nanofilm with excellent adhesive properties.

[0005] The face mask described in Patent Document 1 uses non-woven fabric or the like as a base material and is impregnated with cosmetic ingredients before being applied to the face. However, such conventional face masks have a limited wearing time of about 5 to 15 minutes. If worn directly for a long time, the non-woven fabric will dry out and absorb moisture from the skin, which will then evaporate from the surface, thus depriving the skin of its original moisture.

[0006] Furthermore, because these masks are designed to cover the entire face, they create an unnatural appearance. Also, the weight of the mask can cause it to peel off while wearing it, thus restricting movement. Moreover, because they adhere to the entire face, the penetration of cosmetic ingredients is generally shallow and limited; for example, it's difficult to concentrate the ingredients in specific areas like the eyes and corners of the mouth for effective absorption.

[0007] On the other hand, the thin-film nanosheets described in Patent Documents 2 and 3 are so thin that they are difficult to adhere to the skin without causing wrinkles. Therefore, they present problems such as complicated application procedures and difficulty for users to adhere the nanosheets well to the skin. For example, in Patent Document 3, although the film is applied after wetting the skin surface with makeup, it is known that with this method, the nanosheets are prone to wrinkling due to moisture and cannot adhere well.

[0008] The present invention was proposed in view of the following actual situation, and its main purpose is to provide a cosmetic laminate that can be used for a long time, for localized and concentrated use, and does not hinder activities during wear, and can be easily attached to the surface to which it is to be attached by the user.

[0009] Existing technical documents

[0010] Patent documents

[0011] Patent Document 1: Japanese Patent Application Publication No. 2003-135146

[0012] Patent Document 2: Japanese Patent Application Publication No. 2018-177804

[0013] Patent Document 3: Japanese Patent Application Publication No. 2019-142238 Summary of the Invention

[0014] The inventors conducted in-depth research and found that the above-mentioned problems could be solved by the cosmetic laminate with the following configuration. Based on this understanding, they conducted further repeated research and thus completed the present invention.

[0015] That is, the beauty laminate according to one aspect of the present invention is characterized by comprising: a thin film sheet with a thickness of 10 nm to 10 μm and having water permeability, and a water-absorbing support being laminated on the thin film sheet, wherein the water content of the support is 4.4 g or more relative to 1 g of the support. Attached Figure Description

[0016] Figure 1 This is a schematic cross-sectional view showing an example of a method for attaching a cosmetic laminate according to an embodiment of the present invention.

[0017] Figure 2 This is a graph showing the test results of Test Example 1 of the embodiment.

[0018] Figure 3 This is a schematic diagram showing the location where skin impedance was measured in the test conducted in Example 2 of the embodiment. Detailed Implementation

[0019] The embodiments of the present invention will be described in detail below, but the present invention is not limited thereto.

[0020] (Laminated sheets for cosmetic use)

[0021] As described above, the cosmetic laminate of this embodiment comprises: a thin film sheet with a thickness of 10 nm to 10 μm and water permeability, and a water-absorbing support layer laminated on the thin film sheet, wherein the water content of the support layer is 4.4 g or more per 1 g of the support layer. Alternatively, when calculated based on the area of ​​the support layer, it is 10 mg / cm². 2 Above and 17mg / cm 2 the following.

[0022] By incorporating a support with absorbency and a water content within the aforementioned range, the beauty ingredients can penetrate to the desired location for a longer period compared to conventional face masks. Furthermore, since the film sheet of this embodiment has a thickness of 10 nm or more and 10 μm or less, it does not cause discomfort when applied to the skin, and there is no concern about it peeling off due to its own weight. Therefore, there are no particular restrictions on activity while the sheet is worn, and it also has the advantage of allowing daily activities to be performed while the sheet is worn.

[0023] Therefore, according to the present invention, a cosmetic laminate can be provided that can be used for a long time, for localized and concentrated use, without hindering activities during wear, and can be easily attached to the surface by the user.

[0024] The cosmetic laminate (hereinafter also referred to as "lamella") of this embodiment has at least a thin film and a support.

[0025] The cosmetic laminate in this embodiment can be a single sheet or a disconnected patch type sheet with cut lines introduced at the desired size.

[0026] The constituent elements of the laminated sheet of this embodiment will be described in more detail.

[0027] (Thin film sheet)

[0028] The cosmetic laminate of this embodiment includes a thin film with a thickness of 10 nm or more and 10 μm or less for adhesion to the skin. When the thickness of the thin film is within this range, it has the advantage of not causing discomfort when adhered to the skin or other surfaces. More preferably, the thickness of the thin film is 100 nm to 1000 nm.

[0029] Furthermore, since the aforementioned film sheet is used for cosmetic purposes, it is a water-permeable film sheet that allows cosmetic ingredients to permeate. In this embodiment, "water-permeable" means having the property of allowing water to pass through; specifically, it means having a microstructure that allows water molecules to pass through. Because the film sheet is water-permeable, water (liquid cosmetic ingredients) can be dripped from the support described later, allowing it to pass through the film sheet and reach the skin.

[0030] The film sheet in this embodiment is preferably a biocompatible sheet-like component that causes no discomfort even when adhered to human skin. Furthermore, the film is generally preferably colorless and transparent, or translucent.

[0031] There are no particular limitations on the top view shape of the aforementioned film sheet, and it can be appropriately selected according to the shape of the bonding area and the intended use. In addition, cuts can be formed in the outer periphery and / or inner surface of the film sheet in a manner suitable for the shape of the bonding area.

[0032] Here, the film sheet can be a sheet formed by spin coating, roll-to-roll coating, LB process (Langmuir-Brønder process), etc., or a fiber sheet formed by overlapping fibers generated by electrospinning, etc.

[0033] Furthermore, the thin film sheet of this embodiment preferably has fine pores. This is believed to sufficiently ensure the aforementioned water permeability. The pore diameter of the fine pores is preferably 1 nm or more and 100 μm or less. Here, the pore diameter refers to the average value of the diameter of the aforementioned micropores.

[0034] In the film sheet of this embodiment, to improve water permeability, the "pores" are preferably through-holes. Furthermore, the shape of the pores can be circular, elliptical, polygonal (including honeycomb structures), or a fine structure in which they are irregularly mixed, but from the viewpoint of processability, circular is preferred.

[0035] The minimum pore size of the aforementioned pores is 1 nm or more, allowing sufficient water (molecules) to permeate. Furthermore, the maximum pore size is considered to be 100 μm or less, thus ensuring sufficient water retention. In other words, by providing pores with the aforementioned pore size, the film sheet of this embodiment allows cosmetic ingredients to reliably permeate, and also prevents the cosmetic ingredients from evaporating from the surface, thus providing the advantage of maintaining this effect for an extended period.

[0036] The preferred range for the pore size of the aforementioned fine pores is 1 nm or more and 10 μm or less.

[0037] In this embodiment, the porosity (the proportion of fine pores in the film) of the thin film is 1% or more and 10% or less in terms of area ratio.

[0038] Furthermore, in this embodiment, the film sheet is preferably hydrophilic. Here, hydrophilic means that the contact angle between the film sheet and water is 90° or less. More preferably, the contact angle is 50° or less. It is believed that by making the film sheet hydrophilic, a water-soluble layer can be easily formed on the surface of the film sheet, thus preserving the cosmetic ingredients for a longer period of time.

[0039] The contact angle with water in this specification can be a value determined by the θ / 2 method or by multiplying the angle of the straight line connecting the left and right ends of the droplet to the vertex relative to the solid surface by 2.

[0040] In particular, it can be assumed that if the contact angle of water with the skin is greater than that of the film, with a difference of about 30 to 120 degrees, then the beauty ingredients can be delivered to the skin more effectively.

[0041] The materials used to construct the aforementioned thin films are not particularly limited as long as they are biocompatible. Examples include polyesters such as polyglycolic acid, polylactic acid, polycaprolactone, polyethylene succinate, polyethylene terephthalate, or copolymers thereof; polyethers such as polyethylene glycol and polypropylene glycol; polyamides such as nylon, polyglutamic acid, polyaspartic acid, or their salts; polysaccharides such as pullulan, cellulose, starch, chitosan, deacetylated chitosan, alginic acid, hyaluronic acid, and corn starch or their salts; organosilicones such as acrylic silicones and trimethylsiloxysilicic acid; acrylics such as alkyl acrylates, acrylic silicones, acrylic amides, and their copolymers; polyvinyl alcohol; polyurethane; polycarbonate; polyanhydride; polyethylene; polypropylene; porous coated sheets, nanofiber sheets, etc.

[0042] Among these, materials such as polylactic acid, cellulose (e.g., carboxymethyl cellulose, hydroxyethyl cellulose, etc.), starch, chitosan, deacetylated chitosan, alginate, corn starch, or polyurethane are preferred due to their improved biocompatibility, ease of acquisition, and operability. From the viewpoints of biocompatibility, ease of acquisition, and operability, polylactic acid, cellulose (e.g., carboxymethyl cellulose, hydroxyethyl cellulose, etc.), starch, chitosan, deacetylated chitosan, or polyurethane are particularly preferred.

[0043] Furthermore, in order to produce a hydrophilic film sheet, materials such as polylactic acid, cellulose (e.g., carboxymethyl cellulose, hydroxyethyl cellulose, etc.), starch, chitosan, and deacetylated chitosan are preferably used.

[0044] (Support body)

[0045] Furthermore, the laminated sheet of this embodiment has a support. The support is a plate-shaped member disposed on the surface of the film sheet, used to protect the film sheet and to retain the cosmetic ingredients within the film sheet.

[0046] The support used in this embodiment is absorbent. Absorbency means having a structure (e.g., pores) that can retain water internally. If it is a laminated sheet with such a support, by attaching the sheet to the skin and distributing a moisturizing, whitening, or other beauty serum from the support side, allowing it to penetrate, sufficient beauty ingredients can be delivered to the skin for an extended period.

[0047] Furthermore, the water content of the aforementioned support is 4.4g or more per 1g of support. While there is no specific upper limit, from the viewpoint of preventing moisture loss from the film sheet and skin, it is preferable to be 12g or less per 1g of support. Here, "water content" refers to the amount of water that can be contained, a value determined by measuring the weight difference of the support before and after water content using an electronic balance, and converting it to the weight difference per 1g of support.

[0048] Alternatively, the water content can be a value that can be determined by dividing the weight difference of the support before and after water content by the cross-sectional area of ​​the support. In this case, the aforementioned water content becomes 10 mg / cm³. 2 Above and 17mg / cm 2 the following.

[0049] By allowing the water content to be within the aforementioned range, the support body of this embodiment, when water (liquid beauty ingredients) is spread / applied from the support body, neither repels water nor over-absorbs it, and can deliver an appropriate amount to the skin.

[0050] The preferred range of the water content mentioned above is approximately 10g or more and 12g or less relative to 1g of the support.

[0051] There are no particular restrictions on the shape of the support as long as it can cover one side of the film sheet. The top view shape of the support can be the same as or larger than the film sheet. For example, it can have a gripping part for gripping when peeling off from the film sheet.

[0052] Furthermore, the thickness of the support is preferably 50 to 2000 μm, more preferably 100 to 1500 μm. If the thickness of the support is within the above range, it is easy to grasp the support with fingers, tweezers, etc. when peeling the support from the film sheet. In addition, since the support is given appropriate softness, it has the advantage of being easy to peel off.

[0053] The support in this embodiment is made of a material that has water-absorbing properties and can retain water internally. Furthermore, it is even more preferable to make it of a hydrophilic material. Here, "hydrophilic" has the same meaning as described in the above-described thin film.

[0054] As a support material, any material possessing the aforementioned properties can be used without particular limitation; examples include hydrophilic polymers, paper (cellulose), and nonwoven fabrics. More specifically, examples of hydrophilic polymers include polyolefins (e.g., polyethylene, low-density polyethylene, polypropylene, etc.), ethylene vinyl acetate resin, synthetic rubber, copolyamide resin, copolyester resin, epoxy resin, polyurethane, polysiloxane, polyvinyl alcohol, acrylic resins, poly(hydroxyethyl methacrylate), and their synthetic resins. Examples of nonwoven fabrics include nonwoven fabrics made from glass fiber, cellulose, rayon, polyester, nylon, polypropylene, acrylonitrile fibers, vinylon, aramid fibers, and their synthetic fibers. In addition to the above, porous membranes and nanofiber sheets can also be used. From the viewpoints of hydrophilicity, ease of acquisition, and operability, the following are preferred: paper (cellulose); as hydrophilic polymers, examples include polyolefins (polyethylene, low-density polyethylene, polypropylene), copolyamide resins, copolyester resins, epoxy resins, polyurethanes, polyvinyl alcohol, acrylic resins, and their synthetic resins; as nonwoven fabrics, examples include nonwoven fabrics made of cellulose, rayon, polyester, and their synthetic fibers; nanofiber sheets, etc.

[0055] Among these, materials with a water content of 4.4g or more relative to 1g of the support are preferably hydrophilic polymers such as paper (cellulose), polyolefins (polyethylene, low-density polyethylene, polypropylene), copolyamide resins, copolyester resins, epoxy resins, polyurethanes, polyvinyl alcohol, acrylic resins, and their synthetic resins.

[0056] Furthermore, examples of nonwoven fabrics, such as cellulose, rayon, polyester, their synthetic fibers, and nanofiber sheets, are preferred as materials with a water content of 10g or more relative to 1g of the support.

[0057] Among the aforementioned materials, paper (cellulose) and non-woven fabric are particularly preferred because of their excellent absorbency (water content) and hydrophilicity. The excellent hydrophilicity of the support means that it does not repel water (moisturizing liquid), facilitating the widespread and uniform wetting and spreading of the moisturizing liquid on the support, further enhancing its high absorbency. By using a support with such properties, a sufficient amount of liquid containing cosmetic ingredients (moisturizer, etc.) placed between the film sheet and the skin can be retained in the cosmetic laminate of this embodiment.

[0058] The aforementioned support may or may not be light-transmitting. Furthermore, it can be colored.

[0059] Furthermore, the support body preferably has flexibility, and its elastic modulus is preferably 100 to 100,000 MPa, more preferably 100 to 5,000 MPa. This elastic modulus is a value determined by any one of the static test method, the transverse vibration method, and the ultrasonic method. The JIS standards for elastic modulus measurement are JIS Z2280, JIS R1602, and JIS R1605, and the elastic modulus is a value determined according to any one of them. More specifically, the elastic modulus in this specification can be a value determined by an elastic modulus measuring device based on the static test method (bending test), the transverse vibration method, the cantilever resonance method, or the ultrasonic method (pulse-echo repetition method). If the elastic modulus of the support body is within this range, it is less prone to breakage when peeled from the film sheet, and it can also deform appropriately.

[0060] (Manufacturing method of cosmetic laminates)

[0061] The manufacturing method of the cosmetic laminate in this embodiment is not particularly limited. It can be manufactured by preparing the above-described thin film and the above-described support, and then laminating the support with the previously manufactured thin film facing it. For the laminate of this embodiment, since the thin film is very thin, the support can be adhered to the thin film by intermolecular forces simply by laminating it, without the need for adhesives or the like.

[0062] (How to apply beauty-enhancing laminate sheets)

[0063] Next, refer to Figure 1 The method for attaching the thin film of a cosmetic laminate to the surface to which it is to be attached will be described. In the following description, the symbols in the accompanying drawings represent: 1 thin film, 2 support, 10 cosmetic laminate.

[0064] Figure 1 (A)~ Figure 1 (C) is a cross-sectional view showing an example of the method for applying the cosmetic laminate sheet according to this embodiment. However, the method of using the laminate sheet according to this embodiment is not limited to the following method.

[0065] First, Figure 1 As shown in (A), the laminated sheet 10, which combines a thin film 1 and a support 2, is placed on the desired adhesive surface with the thin film 1 in contact with the adhesive surface (skin). Then, cosmetic ingredients (liquids) such as lotion, emulsion, and whitening ingredients are distributed integrally from the support side. There are no limitations on the distribution method; it can be distributed by spraying, misting, direct application, direct dripping, or dripping via a dropper, sponge, or other similar means.

[0066] Alternatively, in addition to dispersing the cosmetic ingredients after placing the laminate on the surface to be bonded as described above, the laminate can also be immersed in a container containing the cosmetic ingredients (liquid) before being placed on the surface to be bonded.

[0067] The support 2 in this embodiment is absorbent and has the water-holding capacity described above, therefore, cosmetic ingredients such as... Figure 1 As shown in (B), it permeates into the support 2 and then into the film sheet 1.

[0068] Then, the support 2 is peeled off from the film sheet 1. According to the laminate 10 of this embodiment, after the support 2 is removed, it is also possible to... Figure 1 As shown in (C), the cosmetic ingredients are allowed to penetrate the film sheet 1 for an extended period of time. Furthermore, since the film sheet 1 of this embodiment is a very thin film, it has the excellent advantage of not hindering the user's activities while wearing the sheet.

[0069] There is no particular limitation on the time required for the sheet to adhere to the skin and allow the beauty ingredients to penetrate, which can be appropriately set according to the type and amount of beauty ingredients, the user's activities, etc.

[0070] The cosmetic ingredients that can be used in the laminated sheet of this embodiment are not particularly limited as long as they are in liquid form. Regarding moisturizing ingredients, whitening ingredients, and other cosmetic ingredients, known substances can be used without particular limitation.

[0071] For example, the moisturizing ingredient preferably has the function of moisturizing and protecting the skin's stratum corneum. Furthermore, it is more preferable to have an ingredient that assists in the function of sebum secreted from the skin. The moisturizing lotion (a liquid containing moisturizing ingredients) may, as needed, contain a solvent for dispersing the moisturizing ingredients.

[0072] Moisturizing ingredients are preferably selected from those listed in the ingredient labeling list of cosmetics based on the Japanese Pharmaceutical Affairs Law, those in accordance with EU cosmetic standards (Cosmetics Directive 76 / 768 / EEC), and those listed in the International Cosmetic Ingredient Dictionary and Handbook (January 1, 2002, 9th edition) of the US CTFA (Cosmetic, Toiletry & Fragrance Association). Examples of these include fatty acids (e.g., stearic acid, linoleic acid, oleic acid, lauric acid, etc.), fatty alcohols, cholesterol, squalene, palm oil, coconut oil, urea, lactic acid, glycerin, propylene glycol, hyaluronic acid, alpha-hydroxy acids (AHA), honey, mineral oil, petroleum raw materials, petrolatum, beeswax, organosilicon, zinc oxide, lecithin, vegetable oils (e.g., olive oil, sunflower oil, grapeseed oil, coconut oil, safflower seed oil, argan oil, soybean oil, peanut oil, sesame oil, avocado oil, borage oil, jojoba oil, oat oil, pomegranate seed oil, almond oil, bitter almond oil, rosehip oil, German chamomile oil, shea butter, etc.), L-hydroxyproline, L-lysine solution, asparagus stem extract, marshmallow extract, apricot seed extract, and wild rose. Fruit extracts, lysine hydrochloride, hydrolyzed conchiolin, hydrolyzed silk powder, kudzu root extract, Rosa canis fruit extract, raspberry extract, kiwi fruit extract, almond extract, kudzu root extract, gardenia extract, mulberry extract, gentian extract, rice bran extract, sericin, soybean extract, thyme extract, clove extract, wild rose fruit extract, Rosa canis fruit extract, Hibiscus rosa-sinensis extract, coix seed extract, hydroxyproline, European plum hydrolysate, mulberry root bark extract, Madonna lily root extract, oregano extract, lily extract, coix seed extract, lysine, linolenic acid, Asian thyme extract, etc., can be used alone or in combination of two or more.

[0073] Among these, fatty acids (stearic acid, linoleic acid, oleic acid, lauric acid), fatty alcohols, cholesterol, squalene, palm oil, and coconut oil are preferred from the perspective of biological safety. Furthermore, examples of fatty alcohols include glycerol as a trihydric alcohol, diethylene glycol, propylene glycol, 1,3-propanediol, butylene glycol, and hexanediol as dihydric alcohols, and propanol, isopropanol, and butanol as monohydric alcohols.

[0074] The amount of moisturizing ingredient in the moisturizing liquid (the liquid containing moisturizing ingredients) is not particularly limited, but from the viewpoint of balancing moisturizing properties and operability (ease of peeling the support 2 from the film sheet 1), it is preferably 1% by mass or more, more preferably 1 to 100% by mass, and even more preferably 1 to 50% by mass. Furthermore, if the amount of moisturizing ingredient in the moisturizing layer increases, the film sheet 1 may sometimes become sticky. Consequently, it may sometimes be difficult to peel the support 2 from the film sheet 1.

[0075] On the other hand, the solvent only needs to be non-irritating to the skin, and is preferably water, ethanol, or polyols (1,3-butanediol, dipropylene glycol, propylene glycol, etc.), with water being more preferred. The amount of solvent in the liquid is appropriately selected according to the desired viscosity of the liquid, but is preferably 99% by mass or less, and more preferably 50 to 99% by mass.

[0076] In addition, examples of skin-whitening ingredients include, for instance, Vitamin C, Vitamin E, Arbutin, Retinol, Hyaluronic Acid, Collagen, Coix Seed Extract, Seaweed Extract, Tranexamic Acid, Elastin, Placental Extract, Magnesium L-Ascorbate Phosphate, Sodium L-Ascorbate Phosphate, Kojic Acid, L-Ascorbate 2-Glucoside, Ellagic Acid, 4-Butylresorcinol, Chamomile ET, Linoleic Acid S, Potassium 4-Methoxysalicylate, 3-O-Ethyl Ascorbic Acid, Disodium Adenosine Monophosphate, 5,5'-Dipropyl-Biphenyl-2,2'-Diol, Tetra-2-Hexyldecanoic Acid Ascorbate EX, Niacinamide, and TX. C. Dextropanthenol (W), 3-O-ethyl ascorbic acid, L-hydroxyproline, L-lysine (solution), α-arbutin, artichoke leaf extract, astaxanthin, asparagus stem extract, adenosine monophosphate (disodium OT), marshmallow root extract, arnica extract, apricot seed extract, isostearyl ascorbic acid phosphate (2-sodium), polygonum cuspidatum root extract, turmeric extract, asarum root extract, bearberry leaf extract, rose hip fruit extract, lysine hydrochloride, scutellaria baicalensis extract, hydrolyzed conchiolin, hydrolyzed silk powder, kudzu root extract, rose hip fruit extract, octyl-2-glyceroascorbic acid, artemisia capillaris extract, licorice root extract Licorice flavonoids, raspberry extract, kiwifruit extract, almond extract, kudzu root extract, gardenia extract, sophora flavescens extract, mulberry extract, gentian root extract, rice bran extract, star fruit leaf extract, asarum extract, lithospermum extract, peony root extract, calamus root extract, honeysuckle extract, star fruit leaf extract, sericin, soybean extract, thyme extract, clove extract, tetrahexyldecanoic acid ascorbate, tetrahexyldecanoic acid ascorbate, angelica extract, nicotinamide, butcher's broom root extract, nicotinamide, wild rose fruit extract, Rosa canina fruit extract, hydroquinone, hibiscus flower extract The ingredients include: Coix seed extract, Sodium palmiticoascorbate 3, Herba Lemnaegifolia extract, Hydroxyproline, Eriobotrya japonica leaf extract, Ferulic acid, Butcher's broom extract, Grape seed extract, Prunus armeniaca hydrolysate, Safflower extract, Haematococcus pluvialis extract, Haematococcus pluvialis oil, Peony extract, Morus alba root bark extract, Lilium simsii root extract, Oregano extract, Lithospermum erythrorhizon root extract, Evening primrose seed extract, Lemon balsamina extract, Saxifraga stolonifera extract, Lilium buergerianum extract, Coix seed extract, Lysine, Linolenic acid, Prunus armeniaca extract, Rosemary extract, Asiatic thyme extract, Sanguisorba officinalis extract, etc. Examples of whitening ingredients in whitening lotions (liquids containing whitening ingredients) and solvents that may be included in whitening lotions are those with the same amounts and solvents as the aforementioned moisturizing ingredients.

[0077] Furthermore, as a cosmetic ingredient in this embodiment, anti-aging ingredients may also be used, for example.

[0078] In addition, the above-mentioned beauty ingredients can be used alone or in combination of two or more (e.g., a combination of moisturizing ingredients and whitening ingredients).

[0079] In addition to the aforementioned cosmetic ingredients and solvents, liquids containing cosmetic ingredients may also contain surfactants and other ingredients that can be included in cosmetic serums. Examples of surfactants include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants, preferably those listed in the ingredient labeling list of cosmetics based on the Japanese Pharmaceutical Affairs Law, those in accordance with EU cosmetic standards (Cosmetics Directive 76 / 768 / EEC), and those listed in the International Cosmetic Ingredient Dictionary and Handbook (January 1, 2002, 9th edition) of the US CTFA (Cosmetic, Toiletry & Fragrance Association).

[0080] There are no particular limitations on the amount of other ingredients as long as it does not impair the purpose and effect of this disclosure, but the amount of other ingredients in the beauty serum (liquid containing beauty ingredients) is preferably 50% by mass or less, more preferably 10% by mass or less.

[0081] Additionally, although there are no specific limitations, regarding the viscosity of liquids containing cosmetic ingredients, a cone-plate viscometer was used at a shear rate of 2000 s. -1 The measured viscosity is preferably 1.1 mPa·s or higher, more preferably 1.2 mPa·s or higher, and even more preferably 1.3 to 1500 mPa·s. If the viscosity of the liquid is 1.1 mPa·s or higher, the cosmetic ingredients are more likely to remain on the surface of the film sheet 1, and the above-mentioned effects are more easily obtained.

[0082] There are no particular limitations on the preparation method of liquids containing the aforementioned beauty ingredients, and it can be the same as the known preparation method of cosmetics containing beauty ingredients.

[0083] The present invention will be further described in detail below through examples, but the scope of the present invention is not limited thereto.

[0084] Example

[0085] (Fabrication of laminated sheets)

[0086] In this embodiment, a polylactic acid sheet with a thickness of 200 nm was used as the thin film. The maximum pore size of the thin film is 100 nm, and the minimum pore size is 10 nm.

[0087] A cellulose-based support, with a top-view shape larger than the aforementioned film sheet, is laminated onto it to obtain a laminated sheet. The lamination method involves separately wetting the film sheet and the support with water, then adhering and bonding the film sheet to the support, and allowing it to dry for at least 12 hours. The water content of the support is 11g per gram (16mg / cm² based on the support area). 2 ).

[0088] (Experiment 1: Confirmation of lasting moisturizing effect)

[0089] After attaching a 3cm square piece of the aforementioned laminated sheet to the subject's skin, 150mL of commercially available moisturizing toner containing moisturizing ingredients was sprayed onto the support. Then, after waiting 10 seconds until the toner had fully penetrated the support, the support was peeled off.

[0090] Then, skin impedance was measured at 0 minutes, 30 minutes, and 60 minutes after the film was removed (in the case of applying toner directly without the film) when the film was removed, 1 hour after application, 2 hours after application, and when toner was applied directly to the skin without the film (without applying the film). The measurement was performed using the "SKINCON-200EX" (manufactured by Yayoi Co., Ltd., a skin impedance measuring device).

[0091] The results are shown in Figure 2 In the middle. By that Figure 2 The bar chart clearly shows that, compared to applying toner directly to the skin, using the film sheet of the present invention provides superior moisturizing properties. Furthermore, in particular, even after the film sheet has been applied for more than one hour, and even 60 minutes after the film sheet has been removed, a sustained high moisturizing effect is observed.

[0092] Therefore, it can be confirmed that by using the laminated sheet of the present invention, high moisturizing properties and their lasting effect can be obtained.

[0093] (Experimental Example 2: Confirmation of Local Moisturizing Effect)

[0094] The aforementioned laminated sheet was applied to the skin of the test subject, with the moisturizing part (1) and the... Figure 3 As shown, equal amounts of commercially available moisturizing lotion were spread on the periphery (2) to (5) of the sheet. Immediately after spreading, the support of the laminated sheet was peeled off, and the sheet was left for 1 hour with the film attached. After 1 hour, the film was peeled off.

[0095] Furthermore, the skin resistance of the moisturizing part (1) and the adhesive periphery (2) to (5) of the sheet was measured using the same measuring device as in Test Example 1, one hour after the sheet was peeled off.

[0096] The results are shown in Table 1.

[0097]

[0098] As shown in Table 1, the moisturizing effect persisted for the area where the sheet of the present invention was applied, even one hour after the sheet was peeled off. On the other hand, the area around the sheet application only showed the same level of moisturizing effect as when no moisturizing lotion was applied. Based on the above, it can be confirmed that by using the laminated sheet of the present invention, cosmetic ingredients can penetrate to areas where a localized cosmetic effect is achieved.

[0099] This application is based on Japanese Patent Application No. 2020-210120, filed on December 18, 2020, the contents of which are included in this application.

[0100] To illustrate the invention, it has been appropriately and sufficiently described above with reference to specific examples, drawings, etc., by way of embodiments. However, those skilled in the art will recognize that the above embodiments can be easily modified and / or improved. Therefore, any modification or improvement implemented by those skilled in the art that does not depart from the scope of the claims is interpreted as being included within the scope of the claims.

[0101] Industry availability

[0102] This invention has broad industrial applicability in the technical field of cosmetics and beauty.

Claims

1. A cosmetic laminate, comprising: Thin films with a thickness of 10nm to 10μm and water permeability, and A water-absorbing support layered on the thin film sheet. The water content of the support is 4.4g or more per 1g of support. The thin film has fine pores with a diameter of 10 nm to 100 μm. The micropores are through-holes, and occupy an area of ​​more than 1% and less than 10% of the film sheet. The support can be peeled off from the film sheet.

2. The cosmetic laminated sheet according to claim 1, wherein the support has a water- containable amount of 10 mg / cm 2 ~ 17 mg / cm 2 .

3. The cosmetic laminate according to claim 1 or 2, wherein the film sheet is hydrophilic.

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