JP2011178693A - Beauty method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beauty method that moisturizes parts of wrinkle occurrence such as tail of eyes, lips, forehead, or neck part, or parts having possibility of wrinkle occurrence and improves wrinkles or suppresses wrinkle occurrence. <P>SOLUTION: The beauty method includes coating the skin with an emulsified cosmetic containing 5-50 mass% of an oily component and sticking a sheet for skin adhesion which has a sheet substrate layer and an adhesive layer to be adhered to the skin surface and has a steam transmittance of the whole sheet containing the sheet substrate layer and the adhesive layer of 200-2,000 g/m<SP>2</SP>/24 hours. Preferably the tensile strength of the whole sheet containing the sheet substrate layer and the adhesive layer is 20-200 N/cm, the sheet substrate layer is a polyurethane, the thickness of the sheet substrate layer is 30-250 μm and the adhesive layer is a gel-based adhesive containing an organic liquid component. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cosmetic method for improving or suppressing wrinkles by moisturizing sites such as the corners of the eyes, the mouth, the forehead, and the neck where wrinkles are generated or may occur. The present invention relates to pure beauty and is not intended for treatment.

  Conventionally, tapes and sheets that adhere to the skin have been developed for various uses such as medical treatment, hygiene, and makeup. For example, an orthopedic casting tape having high body compatibility, including a combination of elastomer fibers that maintain elasticity for at least 12 months, and a blend of olefin resins having at least 200% extensibility (see Patent Document 1) Also, a paste layer is formed on the upper surface of the support, which is a skin following type thin film, and a release material comprising a pair of release liners is superimposed on the upper surface of the paste layer, so that the followability to the skin is good There has been reported a patch (see Patent Document 2) that is thin overall, can have a uniform plaster layer, and does not wrinkle even if it is applied to a bent part and does not easily peel off.

In addition, an example using a sheet to physically stretch the wrinkles is also known, for example, a sticky, transparent or translucent sheet-form preparation having an inside or on the surface of the sheet. A knit-stretching sheet intended to stretch and fix the corners of the corners of the eyes, the mouth, the forehead, and the neck, characterized by laminating a woven fabric and / or a non-woven fabric having a sufficiently large opening ratio in the thickness direction (Patent Document 3) Stretch tape that stretches and fixes the wrinkles on the surface of the skin, characterized by applying an adhesive with a thick coating of 35 g / m ² or more to a stretchable base material layer (patent) Reference 4) has been reported.

By the way, these medical and sanitary adhesive tapes and sheets are usually required to have excellent moisture permeability in order to release moisture generated by perspiration to the outside and prevent stuffiness. Therefore, for example, the diol component comprises an ether-based urethane resin obtained from at least one selected from the group consisting of polyoxytetramethylene glycol, butanediol, polyethylene glycol and polypropylene glycol, and the isocyanate component as methanediphenylene diisocyanate. A film base material for skin patch (see Patent Document 5) characterized by the above, and a water swelling ratio represented by a change in length when immersed in water at 40 ° C. for 5 minutes is 5% or less It is made of a film base material for skin patches made of a urethane resin having a thickness of 10 μm to 50 μm (see Patent Document 6) or an ether urethane resin having a thickness of 10 μm to 50 μm, and has a tensile strength of at least one direction of 5 ~ 30N / 20mm width, elongation in at least one direction is 4 0 to 1,000%, a film base material for a skin patch (see Patent Document 7), wherein the tear strength in at least one direction is 400 to 1,000 N / cm, each having a moisture permeability 800 to 4,000 g / m ² · 24 hrs has been proposed.

  A pressure-sensitive adhesive has been developed for the purpose of improving the adhesion of the sheet to the skin, and 100 parts by mass of an acrylic polymer and a liquid or paste-like component at room temperature compatible with the polymer. A pressure-sensitive adhesive composition comprising 30 to 100 parts by mass, wherein the liquid or paste-like component is an ester of a monobasic acid or polybasic acid having 8 to 18 carbon atoms and a branched alcohol having 14 to 18 carbon atoms, and And / or an unsaturated fatty acid having 14 to 18 carbon atoms or an ester of a branched acid and a tetravalent or lower alcohol, and 40 to 80% by mass of the acrylic polymer is insolubilized by crosslinking. A medical external material provided with a medical pressure-sensitive adhesive on at least one side of a support (see Patent Document 8) or an adhesive material provided with a pressure-sensitive adhesive layer on one side of a base film Thus, the adhesive layer is composed of 40-80% by mass of an alkyl ester monomer of acrylic acid or methacrylic acid, 10-50% by mass of an alkoxyl group-containing ethylenically unsaturated monomer and a carboxyl group-containing ethylenically unsaturated monomer. A copolymer consisting mainly of 1 to 10% by mass of the polymer, the glass transition point of the copolymer being 250K or less, and the gel fraction of the copolymer after drying being 25% or more An external patch (see Patent Document 9), a copolymer copolymerized mainly with a (meth) acrylic acid alkyl ester having an alkyl group having 4 or more carbon atoms, and a liquid component compatible with the copolymer A cross-linked gel layer containing is formed on at least one side of the support, and the mass ratio of the copolymer and the liquid component is 1.0: 0.6 to 1.0: 1.8, And to the bakelite board A pressure-sensitive adhesive containing an acrylic gel material (see Patent Document 10) having an adhesive force of 250 g / 12 mm or less, an acrylic ester polymer on at least one side of a support, and a liquid component compatible with the polymer A pressure-sensitive adhesive sheet formed by forming a layer, and the pressure-sensitive adhesive layer is an elastic body that does not cause cohesive failure or interface failure when shearing stress is applied, and has a displacement deformation completion distance when shearing stress is applied. Acrylic pressure-sensitive adhesive sheet (see Patent Document 11) characterized in that it is 0.5 to 6 times the thickness of the pressure-sensitive adhesive layer, and on the elastomer film side of a laminated film in which a carrier film is provided on one side of the elastomer film, A pressure-sensitive adhesive sheet in which a pressure-sensitive adhesive layer is formed, the pressure-sensitive adhesive layer having an acrylic polymer as a main component, and a liquid or paste-like component that is compatible with the polymer, Reported is a pressure-sensitive adhesive sheet for skin application (see Patent Document 12), which is present on both the pressure-sensitive adhesive layer and the carrier film, and is formed on one side of the elastomer film in a state where the carrier film is peelable. Has been.

In addition, the polyol component contains at least one polyether polyol having a polyoxyalkylene skeleton as a repeating unit, and an acrylic film is formed on a film made of polyether urethane obtained by reacting the polyol component with the polyisocyanate component. A resin composition comprising an acid ester polymer, a carboxylic acid ester having a carbon number of 16 or more, which is compatible with the acrylate polymer and is liquid or pasty at room temperature, and a crosslinking agent component The moisture permeability when stored for 24 hours in an atmosphere of 40 ° C. and 30% RH is 800 g / m ² · 24 h · 40 ° C. · 30 RH or more, 2,400 g / m ² · 24 h・ 40 ° C. and 30RH or less adhesive sheet for skin application (see Patent Document 13), A sagging skin having a pressure-sensitive adhesive layer containing one or more of an acrylic pressure-sensitive adhesive, a silicone pressure-sensitive adhesive and a polyurethane pressure-sensitive adhesive on a resin sheet containing polyurethane having a folding ratio of 1.45 or more and 1.55 or less. A polyurethane film is attached to one side of a pressure-sensitive adhesive sheet (see Patent Document 14), a gel-like skin protection sheet copolymerized with polyethylene and polystyrene, or one side of a silicon gel sheet. A skin protection sheet (see Patent Document 15) characterized in that a release paper is attached to the opposite surface has been proposed.

  In addition, the cosmetic sheet is made of a flexible thermoplastic elastomer or rubber, made of silicone rubber or polyurethane, kneaded with radium radioactive ceramics containing hot spring flowers containing radium, In the decorative sheet formed by bonding a peelable release sheet to the adhesive layer of the base material sheet provided with a pressure-sensitive adhesive layer on the skin surface (see Patent Document 16) used on the skin, The release sheet is formed with a loop-shaped separation line, the separation line is provided inside the contour line of the base material sheet, and the skin external preparation or chemical solution is applied to the base material sheet, The physical tension, which is equivalent to the impregnation area, tightens and activates the skin, and at the same time allows the drug to quickly penetrate the skin surface, In a decorative sheet (see Patent Document 17) having a function for completing the above-mentioned process, and a cosmetic sheet body impregnated with a liquid and placed on the face, first and second facing the cheeks on the left and right sides of the face Two cheek facing portions, first and second nose wing facing portions facing the left and right nose wings in succession to each of the first and second cheek facing portions, and a laterally central portion. There has been proposed a cosmetic sheet body (see Patent Document 18) provided with a separation shape that is formed and separates the first and second nose wing facing portions from each other.

  On the other hand, the emulsified cosmetic for the purpose of enhancing the moisture retention of the skin contains an olefin polymer which is a homopolymer having propylene or 1-butene as a monomer, and a water hydrated oil which shows a paste at 20 ° C. The water-holding oil is composed of N-lauroyl-L-glutamic acid (cholesteryl or phytosteryl behenyl octyldodecyl), dipentaerythritol fatty acid ester, macadamian nut oil fatty acid phytosteryl, cholesteryl hydroxystearate, etc. Emulsifying cosmetics with high moisturizing effect selected from the above (see Patent Document 19), esters of dimer acid and dimer diol, diesters of N-acyl glutamic acid, (pyrrolidonecarboxylic acid / fatty acid) glyceryl, etc. Microemulsi containing a liquid oily component A cosmetic set containing a liquid cosmetic having a viscosity of 1000 to 4000 mPs (see Patent Document 20), a homopolymer of 2-methacryloyloxyethyl phosphorylcholine, or a copolymer of 2-methacryloyloxyethyl phosphorylcholine and a hydrophobic monomer An emulsified cosmetic (see Patent Document 21) containing 1 to 50% by mass of one or more polymers selected from a polymer and a water-holding oil, and a water-holding composition such as cholesterol ester Emulsified cosmetic containing a water-containing composition containing 5 to 80% by mass in the total amount of the product (see Patent Document 22), oil-soluble N-long chain acyl acidic amino acid mono- or diester, etc. In addition to containing 0.1 to 90% by weight of a water-holding oil capable of holding 135% or more of its own weight when returned to water, water-swellable clay Such things water-in-oil emulsion composition comprising an organic modified clay mineral and water obtained by treating with a quaternary ammonium salt (see Patent Document 23) have been reported.

  Furthermore, as for the combination of applying tape or sheet after applying cosmetics to the skin, hyaluronic acid is an essential active ingredient, bioceramide, Sorakuhi extract, aminocaproic acid, royal jelly, inosit, marine collagen, yeast extract, glycyrrhizin One component of dipotassium acid, or two or more components as auxiliary components, and a cream using squalane, applying this to the application site, and then keeping warm with a silk nonwoven sheet (see Patent Document 24) A water-in-oil emulsion in which a pressure sensitive adhesive article applied over the emulsion on the skin adheres at a level of at least about 50% of the adhesive strength level of the pressure sensitive adhesive tape applied directly to the skin. Patent Document 25) has been reported.

JP-A-8-308919 JP 2004-188005 A JP 2001-335430 A JP 2004-313277 A JP 2005-218494 A JP 2005-218495 A Japanese Patent Laid-Open No. 2005-218496 Japanese Patent No. 2539330 Japanese Patent No. 2584866 Japanese Patent No. 2700835 Japanese Patent No. 2971998 Japanese Patent No. 3808971 Japanese Patent No. 3884499 JP 2008-143876 A JP 2008-266232 A JP 2004-357833 A JP 2005-185391 A JP 2008-188085 A JP 2008-247833 A JP 2007-99654 A JP 2004-143063 A JP-A-9-208423 JP-A-8-20529 JP 2006-188480 A JP 2005-517518 A

  Until now, in order to improve skin wrinkles such as the corners of the eyes, mouth, forehead, and neck, a method of applying a sheet or tape and pulling, a method of applying a moisturizing cosmetic, a sheet impregnated with a moisturizing cosmetic There was a method of applying, a method of applying a moisturizing cosmetic, and then a method of covering with a sheet, but none of them had a sufficient effect for improving wrinkles or it took too much time. It was. Therefore, an object of the present invention is to provide a simple cosmetic method that can sufficiently improve wrinkles and suppress wrinkles.

  As a result of intensive studies, the present inventors applied an emulsified cosmetic as a moisturizing cosmetic to a site where skin wrinkle improvement is necessary, and then applied an adhesive sheet for skin application with relatively low water vapor permeability. The present inventors have found that the skin can be sufficiently improved by moisturizing the application site. Furthermore, when acrylic adhesives or rubber adhesives that are commonly used are used as adhesives for adhesive sheets for skin application, they are easy to peel off when applied to the site where cosmetics are applied. On the other hand, when a gel adhesive containing an organic liquid component is used, it is found that it is preferable in that it is difficult to peel off when applied to a site where an emulsified cosmetic is applied, and the cosmetic method of the present invention is completed. did.

That is, the present invention
(1) After applying an emulsified cosmetic containing 5 to 50% by mass of an oil component on the skin, the sheet base layer and an adhesive layer that can adhere to the skin surface, and a sheet base layer A cosmetic method comprising applying a skin patch sheet having a water vapor permeability of 200 to 2,000 g / m ² · 24 hrs of the entire sheet including the adhesive layer;
(2) The cosmetic method according to (1) above, which is a cosmetic method for improving skin wrinkles or suppressing wrinkle generation,
(3) The cosmetic method according to (1) or (2) above, wherein the tensile strength of the entire sheet including the sheet base material layer and the pressure-sensitive adhesive layer is 20 to 200 N / cm,
(4) The cosmetic method according to any one of (1) to (3) above, wherein the sheet base material layer is made of polyurethane.
(5) The beauty method according to any one of (1) to (4) above, wherein the thickness of the sheet base material layer is 30 to 250 μm,
(6) The cosmetic method according to any one of (1) to (5) above, wherein the pressure-sensitive adhesive layer comprises a gel-based pressure-sensitive adhesive containing an organic liquid component.
(7) The cosmetic method according to any one of (1) to (6) above, wherein the oily component contains 10 to 80% by mass of a water-soluble oily component, and
(8) The above (1), wherein the emulsified cosmetic contains 0.5 to 6% by mass of one or more amphiphilic substances selected from higher alcohols, fatty acid monoglyceryls and glycerin alkyl ethers. It is related with the beauty method in any one of-(7).

The present invention also provides:
(9) A sheet for skin application having a sheet base material layer, an adhesive layer capable of sticking to the skin surface and a release layer, and having a water vapor permeability of 200 to 2,000 g / m ² · 24 hrs, and an oil component It is related with the beauty kit which has an emulsified cosmetics containing 5-50 mass%.

  By the method of the present invention, remarkable improvement and suppression of wrinkles can be achieved and the wrinkle improvement period can be shortened.

It is a figure which shows the specific example of the sheet | seat for skin sticking of this invention.

Details of the present invention will be described below.
(Sheet for skin application)
The sheet for skin application used in the present invention has a sheet base layer and an adhesive layer that can adhere to the skin surface. A peelable release layer may be provided on the pressure-sensitive adhesive layer side and peeled off before use. Moreover, you may have a printing layer etc. in the opposite side to the adhesive layer formation surface in a sheet | seat base material layer. When providing the release layer, the release layer may be provided for each sheet for skin application, or a plurality of sheets for skin application may be provided on one release sheet.

In addition, as the sheet for skin application in the present invention, a sheet having a relatively low water vapor permeability is used so that the water in the emulsified cosmetic is not easily evaporated, and the water vapor permeability (Dry method) is 200 to 2,000 g / m ² · 24 hrs, preferably 200 to 1,500 g / m ² · 24 hrs. Here, the water vapor transmission rate is the amount of water vapor per 1 m ² of the sheet under predetermined conditions. After a predetermined amount of water is placed inside a container having a predetermined diameter, the container mouth is covered with a sheet. Cover, temperature 40 ° C., relative humidity 30% R.D. H. The amount of water decrease when left for 24 hours under the above conditions is a value converted per 1 m ² . If the water vapor permeability is too small, the skin may have an increased amount of moisture in the stratum corneum when applied for a long period of time, leading to a decrease in barrier function, and red spots and itching may occur. Further, the space between the affixed skin surface and the skin affixing sheet of the present invention tends to be in a moist state, causing a decrease in adhesive strength and a tendency to drop off from the skin surface. On the other hand, if the moisture permeability is too high, the wrinkle improving effect tends to be reduced.

  The sheet for skin application in the present invention is soft enough to follow the curve of the entire skin of the site to be applied, but even if there is a wrinkle unevenness of the skin or movement of fine facial expressions, It must be hard enough not to make. If it is curved in accordance with the movement of the skin wrinkles and fine facial expressions, the effect of improving wrinkles is reduced. Since it has the said water vapor permeability and hardness, the thickness of the whole sheet | seat is 30-250 micrometers normally, and 50-200 micrometers is preferable. Moreover, what is necessary is just to set the size of the sheet | seat for skin sticking of this invention suitably according to the application site | part on skin.

  As an index of the hardness of the skin application sheet, the bending resistance (45 ° cantilever method, substrate width 20 mm, substrate length 150 mm) according to JIS L1096 is in the range of 15 to 25 mm. By doing so, it is effective to follow the movement of the skin surface during use of sticking, the followability to the unevenness of wrinkles, the handleability, and the uncomfortable feeling during sticking.

(Sheet base material layer)
As described above, the sheet base material layer used in the present invention needs to have a water vapor permeability that is not so large that the water in the emulsified cosmetic does not easily evaporate, and the entire skin of the site to be applied has a curve. It should be soft enough to follow, and hard enough not to follow the movement of skin wrinkles and fine facial expressions. Materials for constituting such a sheet base material layer include polyolefins such as polyethylene and polypropylene, polyesters such as polytetraethylene terephthalate, polyurethanes such as polyether polyurethane and polyester polyurethane, polyamide, polyvinyl acetate, and ethylene-acetic acid. Monolayers or laminates of various plastic materials such as vinyl copolymer, ethylene-vinyl alcohol copolymer, polyvinyl chloride, and polyvinylidene chloride can be used. Among these, polyurethane is particularly preferable in order to exhibit excellent flexibility such as skin followability. The polyurethane used as the sheet base layer of the present invention is a polymer having a urethane bond (-NHCOO-) in the repeating unit of the main chain, and can be used as the sheet for skin patch of the present invention. Although there is no particular limitation, it is mainly a polyether-based or polyester-based polymer produced by a reaction between an isocyanate and a polyhydroxy compound.

  Isocyanates include tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate (MDI), 1,5-naphthylene diisocyanate (NDI), tolidine diisocyanate, 1,6-hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI). , Xylene diisocyanate (XDI), triisocyanate, tetramethylxylene diisocyanate (TMXDI), 1,8-diisocyanate methyloctane, lysine ester triisocyanate, bicycloheptane triisocyanate, and the like. It is preferable to use 4,4′-diphenylmethane diisocyanate (MDI) from the viewpoint of obtaining a polymer structure excellent in ease and mechanical strength.

  Examples of the polyhydroxy compound include ethylene glycol, 1,3-propylene glycol, 1,2-propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6- Aliphatic polyols such as hexanediol, 3-methyl-1,5-pentanediol, neopentyl glycol, 1,8-octanediol, 1,9-nonanediol, diethylene glycol, 1,4-cyclohexanedimethanol, glycerol, , 4-dimethylolbenzene, aromatic glycols such as ethylene oxide adducts and propylene oxide adducts of bisphenol A can be exemplified, and among these, ensuring high moisture permeability while suppressing water swellability From the point of being able to It is preferable to use a random polymer of polyethylene glycol and polyethylene glycol and / or polypropylene glycol, and polyoxytetramethylene glycol, polyethylene glycol, and polypropylene glycol may be selected to have an appropriate molecular weight depending on the application. Preferable examples include those having a mass average molecular weight of 500 to 3,000.

  Among these, as the polyurethane, it is preferable to use MDI as the isocyanate, and polyoxytetramethylene glycol and polyethylene glycol and / or polypropylene glycol as the polyhydroxy compound. As the polyhydroxy compound in the polyether polyurethane, More preferably, the polyoxytetramethylene glycol is contained in an amount of 5 to 60% by mass and the polyethylene glycol is contained in an amount of 10 to 50% by mass. It is preferable to contain 20-45 mass%. Furthermore, a chain extender can be used, and conventionally known materials can be used as the chain extender. For example, diols such as ethylene glycol, propylene glycol, and butanediol, ethylenediamine, tolylenediamine, etc. Examples include diamines. Further, the thickness of the polyurethane base material is usually 30 to 250 μm, and particularly preferably 50 to 150 μm. Further, the tensile strength is preferably in the range of 20 to 200 N / cm, particularly in the range of 20 to 100 N / cm, from the viewpoint of reducing the uncomfortable feeling at the time of sticking and the effect of stretching.

  The polyurethane used in the present invention can be produced by a known production method using the above isocyanates and polyhydroxy compounds as raw materials. For example, it can be produced by the method described in JP-A-2005-218495. Can do. That is, the polyurethane used in the present invention can be polymerized using, for example, a one-shot method or a prepolymer method. Moreover, even if it is bulk polymerization which does not use a solvent, you may superpose | polymerize in a solution for viscosity reduction. Among these, the bulk polymerization will be described as follows. A polyhydroxy compound is put into a reaction vessel, and an isocyanate is added to cause urethanization while adjusting and stirring so that the temperature becomes 50 to 80 ° C. Furthermore, after adding a chain extender and making it react, a reaction product is moved to a tray, and it hold | maintains at 100-150 degreeC for 4 hours or more, and a blocky polyurethane can be obtained by completing reaction.

  Next, the polyurethane foam is pulverized and pelletized, and the resin pellets are melted and then extruded into a sheet using a T-die extruder or an inflation die extruder to form a film substrate made of polyurethane. Can be formed. In addition, the film base material extruded into the sheet form is usually wound up. Or the film base material which consists of polyurethane is formed by rolling, extending | stretching and extending | stretching polyurethane between two heated rolls by a calendar process, and a film base material is wound up as needed. Alternatively, the resin pellets are dissolved in a solvent such as N, N-dimethylamide, and this solution is applied onto a release liner such as a polyester film using a bar coater or the like, and dried to remove the solvent. A film substrate made of polyurethane may be formed.

  If necessary, additives usually used for the film, for example, an ultraviolet absorber, an anti-aging agent, a filler, a pigment, a colorant, a flame retardant, an antistatic agent and the like can be added. These additives are used in normal amounts depending on the type.

(Adhesive layer)
The pressure-sensitive adhesive used in the pressure-sensitive adhesive layer of the present invention should be one that can be applied to the sheet base material layer, has viscoelasticity to the stuck skin, and has little irritation to the skin. It is. Furthermore, it is necessary that the water vapor permeability is so small that the moisture in the emulsified cosmetic does not easily evaporate, and the skin is soft enough to follow the curve of the entire skin of the site to be applied, It must have a hardness that does not follow the irregularities of the ridges. Therefore, the pressure-sensitive adhesive used in the pressure-sensitive adhesive layer is not particularly limited with respect to the material thereof, and an acrylic pressure-sensitive adhesive, a rubber pressure-sensitive adhesive, a silicone pressure-sensitive adhesive, or the like can be used. Among these, it is preferable to use an acrylic pressure-sensitive adhesive from the viewpoints of adjustment of adhesive properties and low skin irritation. From the viewpoint of the properties of the pressure-sensitive adhesive, a gel-based pressure-sensitive adhesive is preferable from the viewpoint of low irritation to the skin surface and compatibility (e.g., compatibility) with the emulsified cosmetic, and particularly a gel-based material containing an organic liquid component. An adhesive is preferred.

  Gel adhesives generally include hydrogel adhesives, organogel adhesives, etc., but in the present invention, a skin patch sheet is applied on an emulsified cosmetic applied on the skin surface, Since it is necessary to firmly adhere and fix, it is preferable to use an organogel pressure-sensitive adhesive that causes less fluctuation in the adhesive properties during sticking than a hydrogel pressure-sensitive adhesive that retains moisture.

  As such an organogel pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive containing a large amount of an organic liquid component is preferably used, and the cohesive force of the pressure-sensitive adhesive layer is reduced by the compatibility of the organic liquid component and the acrylic pressure-sensitive adhesive. In some cases, crosslinking is performed with a crosslinking agent in order to prevent a decrease in cohesive force. Thereby, phase separation of the organic liquid component contained and elution from the pressure-sensitive adhesive layer can be prevented.

  The monomer mixture used for the acrylic pressure-sensitive adhesive used in the pressure-sensitive adhesive layer has a (meth) acrylic acid alkyl ester as a main monomer for imparting skin adhesiveness (tackiness), and a copolymer for imparting cohesive strength, etc. A possible unsaturated monomer is used as a submonomer, and these are copolymerized to obtain an acrylic pressure-sensitive adhesive.

Specific examples of the (meth) acrylic acid alkyl ester include one or more alkyl esters of acrylic acid or methacrylic acid, specifically 1 to 12 carbon atoms, preferably 4 to 9 alkyl esters. Can be used.
As the unsaturated monomer copolymerized with the (meth) acrylic acid alkyl ester, an alkoxy group-containing ethylenically unsaturated monomer, a carboxyl group-containing ethylenically unsaturated monomer, or the like can be used.

The alkoxy group-containing ethylenically unsaturated monomer is preferably included for imparting hydrophilicity or moisture permeability to the pressure-sensitive adhesive layer. Specifically, methoxypolyethylene glycol (meth) acrylate, ethoxydiethylene glycol (meth) acrylate, Use of an alkoxyalkyl (meth) acrylate having an alkoxy group having 1 to 4 carbon atoms, such as butoxydiethylene glycol (meth) acrylate, methoxyethyl (meth) acrylate, ethoxyethyl (meth) acrylate, butoxyethyl (meth) acrylate, etc. preferable.
Further, the carboxyl group-containing ethylenically unsaturated monomer is preferably contained in order to impart cohesiveness to the pressure-sensitive adhesive layer or to secure a reaction point when the pressure-sensitive adhesive is subjected to a crosslinking treatment. Specifically, acrylic acid , Methacrylic acid, itaconic acid, crotonic acid, fumaric acid, and (anhydrous) maleic acid. Among these, it is preferable to use acrylic acid or methacrylic acid from the viewpoints of copolymerizability and handleability.

  Furthermore, when hydrophilicity is required for the pressure-sensitive adhesive layer, monomers such as styrene, vinyl acetate, N-vinyl-2-pyrrolidone, 2-hydroxyethyl acrylate, and 2-hydroxypropyl acrylate are also required as copolymerizable monomers. Depending on the case, it may be appropriately copolymerized.

When the pressure-sensitive adhesive layer made of an acrylic pressure-sensitive adhesive is used as an organogel pressure-sensitive adhesive, the acrylic copolymer in the resulting organogel pressure-sensitive adhesive has a mass average molecular weight of 1.5 million or less, preferably about 500,000 to 1,000,000. Adjustment is desirable from the viewpoint of imparting cohesiveness to the pressure-sensitive adhesive layer.
Further, from the viewpoint of improving the adhesion of the surface of the pressure-sensitive adhesive layer to the unevenness of the skin surface to be applied and further exhibiting sweat resistance, 20 to 120 parts by weight of organic liquid with respect to 100 parts by weight of the acrylic pressure-sensitive adhesive. It is preferable to prepare an organogel pressure-sensitive adhesive by containing the components.

  The organic liquid component is an oily component, and representative examples include fatty acid esters, carboxylic acid esters, and glycerin esters. As the fatty acid ester, it exhibits affinity and compatibility with the acrylic polymer, and also has an affinity for moisture during sweating. Specifically, ethyl myristate, isopropyl myristate, Isopropyl palmitate, butyl stearate, isopropyl isostearate, hexyl laurate, cetyl lactate, myristyl lactate, diethyl phthalate, octyldodecyl myristate, octyldodecyl oleate, hexyldecyl dimethyloctanoate, cetyl 2-ethylhexanoate, 2 -Carboxylic acid esters using monohydric alcohols such as isocetyl ethylhexanoate, stearyl 2-ethylhexanoate, dioctyl succinate, propylene glycol dicaprylate, propylene glycol dicaprate, propylene diisostearate Glyceryl monocaprylate, glyceryl monocaprylate, glyceryl tricaprylate, glyceryl tri-2-ethylhexanoate, glyceryl tricaprate, glyceryl trilaurate, glyceryl triisostearate, glyceryl trioleate, trimethylolpropane tri-2-ethylhexanoate, etc. A carboxylic acid ester using a polyhydric alcohol having a valence higher than that can be used.

  Among the above carboxylic acid esters, it is desirable to use a saturated fatty acid having no unsaturated double bond from the viewpoint of preventing oxidative deterioration, and to make a glycerin ester from the viewpoint of low irritation to the skin and economical efficiency. Therefore, as the saturated fatty acid, it is preferable to use an esterified product of a saturated fatty acid such as caprylic acid, capric acid or 2-ethylhexanoic acid and a monohydric or polyhydric alcohol, most preferably triglyceryl caprylate, 2- It is desirable to use triglyceryl ethylhexanoate.

  In the case of using the above-mentioned carboxylate ester having an unsaturated bond, there is a risk that it will be oxidized and deteriorated by oxygen in the atmosphere, causing physical property changes and not exhibiting desired properties. It is preferable to mix an antioxidant in the pressure-sensitive adhesive.

  It is preferable that 30-80 mass%, preferably 35-70 mass% of the acrylic copolymer in the organogel pressure-sensitive adhesive containing the composition is insoluble (gelled). Here, “insolubilization” specifically means that it does not dissolve in toluene. The insolubilization rate was determined by immersing the dried sample in toluene at room temperature for 7 days, filtering the insoluble matter with a polytetrafluoroethylene membrane (NTF membrane manufactured by Nitto Denko Corporation) having an average pore size of 0.2 μm, and drying. It is the value calculated by the ratio with the dry sample mass before immersion.

  When the insolubilization ratio is less than 30% by mass, the internal cohesive force of the formed adhesive layer becomes insufficient, causing deviation during application to the skin surface, or sticking to the skin surface when peeled off from the skin surface. There is a risk that a so-called adhesive residue phenomenon may occur where the agent remains.

  On the other hand, when the insolubilization rate exceeds 80% by mass, the skin adhesiveness is extremely lowered, and there is a possibility that end peeling or peeling-off phenomenon may occur during sticking use.

  Further, as a method for insolubilizing the acrylic pressure-sensitive adhesive, a method of generally performing a crosslinking treatment can be employed. Cross-linking treatment includes chemical cross-linking using cross-linking agents such as organic peroxides, isocyanate compounds, organic metal salts, metal alcoholates, metal chelates, epoxy compounds, primary amino compounds, and ionizing radiation such as electron beams and ultraviolet rays. Can be crosslinked.

  Furthermore, for the pressure-sensitive adhesive obtained as described above, a plasticizer represented by polyhydric alcohols such as glycerin, polyethylene glycol, and polypropylene glycol, polyacrylic acid, a cross-linked polyacrylic acid, Water-soluble typified by polyvinyl pyrrolidone or water-absorbing resin, rosin resin, terpene resin, tackifier resin typified by petroleum resin, various softeners, various fillers, various additives such as pigments You may mix | blend.

As thickness of an adhesive layer, it is 5-80 micrometers normally, and 10-50 micrometers is especially preferable.
Furthermore, the adhesive force to the skin is preferably 0.2 to 1.5 N / 10 mm by the following measurement method.

Measuring method: 0.02 g of emulsified cosmetic is applied to the inner part of the forearm. Thereafter, the sheet sticking part is consciously rubbed back and forth 10 times with an index finger. A skin application sheet (2 cm × 5 cm) was applied to the skin coated with the cosmetic, and lightly pressure-bonded with a finger. The arm was moved to rest for 15 minutes, and then the resistance when peeled was peeled by 90 ° with a tensile tester, and the maximum value was taken as the adhesive strength. The measuring instrument was a Tensilon type tensile tester. (Peeling speed 300 mm / min, n = 3) As the emulsified cosmetic in this measurement method, the one prepared in “Production of two emulsified cosmetics” in Examples described later was used.

(Sheet shape)
The sheet shape used in the present invention is desirably a shape along the muscles under the skin. This is because when the shape is not along the muscle, the effect of stretching the heel by physical force is reduced by the wave of the sheet itself following the movement of a fine expression. In particular, a shape along the facial muscle is desirable for sticking to the face, and a shape along the ocular muscle is preferable for the eyelid around the eyes. One specific example is shown in FIG.

(Emulsified cosmetics)
Examples of the oil component in the emulsified cosmetic of the present invention include hydrocarbons, esters, fatty acids, silicone oils, fluorine oils, etc., regardless of the origin of animal oil, vegetable oil, synthetic oil, etc. Specifically, hydrocarbon oils such as liquid paraffin, squalane, petrolatum, polybutene, polyisobutylene; oils and fats such as olive oil, castor oil, mink oil, macadamian nut oil; cetyl isooctanoate, isopropyl myristate, palmitic acid Isopropyl, octyldodecyl myristate, glyceryl trioctanoate, oleyl oleate, octyldodecyl oleate, decyl oleate, isocetyl isostearate, isotridecyl isononanoate, isocetyl stearate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl mycinate, octyldodecyl myristate, myristyl myristate, cetyl octanoate, cetyl tetra-2-ethylhexanoate, 2-ethylhexyl succinate, alkylene glycol monoisostearate, di-2-ethylhexanoic acid Ethylene glycol, neopentyl glycol dicaprate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, dipentaerythritol fatty acid ester, polyglyceryl diisostearate, diglyceryl isostearate, glyceryl triisostearate, Glyceryl tribehenate, diisostearyl malate, tetra-2-ethylhexanoic acid pentaerythritol, rosin acid pentaerythritol ester, dioctane Esters such as neopentyl glycolate, cholesteryl 12-hydroxystearate, N-lauroyl-L-glutamic acid di (cholesteryl, behenyl, octyldodecyl) ester; low polymerization dimethylpolysiloxane, high polymerization dimethylpolysiloxane , Silicones such as methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, fluorine-modified polysiloxane; fluorine-based oils such as perfluorodecane, perfluorooctane, and perfluoropolyether. These can be used alone or in combination of two or more. By blending oily components, not only moisture but also oil penetration into the skin is promoted and softened, the pain felt when the sheet is pulled is removed, the skin is dried and protected after removing the sheet, etc. Sustains the heel-stretching effect by softening the skin. Among these, when an oily component having a molecular weight of 300 to 400 is blended, the wrinkle improving effect is further enhanced, which is preferable. Examples of oil agents having a molecular weight of 300 to 400 include propylene glycol dicaprate, neopentyl glycol di-2-ethylhexanoate, isotridecyl isononanoate, cetyl 2-ethylhexanoate, octyl palmitate, di-2-ethylhexyl succinate, ethyl oleate Etc.

  The content of the oil component in the emulsified cosmetic used in the present invention is preferably 5 to 50% by mass, more preferably 5 to 30% by mass in the total amount of the emulsified cosmetic. If it is less than 5% by mass, sufficient elasticity, gloss, moist feeling and effect cannot be obtained, and if it exceeds 50% by mass, an appropriate and uniform film thickness and adhesion cannot be obtained. Moreover, although the compounding quantity of the oil agent of the molecular weight 300-400 described above is not limited, Preferably, it is 3-20 mass%, More preferably, it is 5-10 mass%.

  Among the oily components, it is preferable that a water-holding oily component capable of holding an amount of water equal to or more than its own weight is included in order to increase the affinity for the skin. The “water-holding property” used in the present invention means that the water-holding power (%) measured by the following water-holding power test is 100% or more. The water holding power test method is to weigh 10 g of a sample (oil component) heated to 50 ° C. into a 200 mL beaker and stir the water at 50 ° C. while stirring at 3000 rpm with a disper mixer. The maximum amount (mass) at which water is not discharged is measured until it comes, and this value is divided by 10 g of the sample, and multiplied by 100 to evaluate as water holding power (%). In the present invention, among these water-containing oily components, N-lauroyl-L-glutamic acid di (cholesteryl behenyl octyldodecyl) ester, N-lauroyl-L-glutamic acid di (phytosteryl behenyl, Octyldodecyl) ester, N-lauroyl-L-glutamic acid di (cholesteryl octyldodecyl) ester, N-lauroyl-L-glutamic acid di (phytosteryl octyldodecyl) ester, dimer acid dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl) / Behenyl), cholesteryl hydroxystearate, phytosteryl hydroxystearate, hexa (hydroxystearic acid / stearic acid / rosinic acid) dipentaerythrityl, stearic acid hydrogenated castor oil, macadamia Nuts fatty cholesteryl, diglyceryl triisostearate and the like are preferable. 10-80 mass% in an oil-based component is preferable, and, as for content of a water holding oil-based component, 30-70 mass% is more preferable.

  The emulsified cosmetic used in the present invention includes a parent having both a hydrophilic group and a lipophilic group in a molecule selected from higher alcohol, fatty acid monoglyceryl, and glycerin alkyl ether in order to stabilize the emulsification. It is preferable to use a medium. In particular, the solid amphiphile at 25 ° C does not give a feeling of stickiness, but gives flexibility to the cosmetic film, increasing the moist feeling by thickening the cosmetic film, and further improving wrinkles or generating wrinkles. A suppressing effect can also be expected, which is particularly preferable.

  Examples of such higher alcohols include linear saturated higher alcohols having 14 to 30 carbon atoms, specifically, behenyl alcohol, tridecyl alcohol, myristyl alcohol, pentadecyl alcohol, cetyl alcohol, cetostearyl alcohol, Examples thereof include linear saturated aliphatic alcohols such as heptadecyl alcohol and stearyl alcohol, lanolin alcohol, and the like.

The fatty acid monoglyceryl has 16 to 18 carbon atoms, and specific examples include glyceryl stearate and glyceryl palmitate.
The glycerin alkyl ether has 16 to 18 carbon atoms, and specific examples include glycerin monostearyl ether and glycerin monocetyl ether. These may be used alone or in combination of two or more as required.

  The content of the amphiphilic substance is 0.5 to 6% by mass, more preferably 2 to 6% by mass in the total amount of the emulsified cosmetic. By setting it within this range, the stability of the emulsified cosmetic is improved, and the usability during application is excellent.

  In the present invention, the content ratio [amount of hydrated oil component] / [amount of amphiphile] of the hydrated oil component and the amphiphile is in the range of 0.8-5, It is preferable as an effect of improvement. By setting the ratio to 2 to 4, the effect of improving wrinkles can be further improved.

  The surfactant blended in the emulsified cosmetic used in the present invention is not particularly limited as long as it is a surfactant that is blended for the purpose of stably emulsifying oily components and is usually used in cosmetics. Examples thereof include nonionic surfactants, anionic surfactants, amphoteric surfactants, and cationic surfactants.

  Examples of the nonionic surfactant include glycerin fatty acid esters and alkylene glycol adducts thereof, polyglycerin fatty acid esters and alkylene glycol adducts thereof, propylene glycol fatty acid esters and alkylene glycol adducts thereof, sorbitan fatty acid esters and alkylene glycols thereof. Adduct, fatty acid ester of sorbitol and its alkylene glycol adduct, polyalkylene glycol fatty acid ester, sucrose fatty acid ester, polyoxyalkylene alkyl ether, glycerin alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene hydrogenated castor oil, lanolin Examples include alkylene glycol adducts, polyoxyalkylene alkyl co-modified silicones, and polyether-modified silicones It can be.

  Examples of the anionic surfactant include alkylbenzene sulfate, alkyl sulfonate, α-olefin sulfonate, dialkyl sulfosuccinate, α-sulfonated fatty acid salt, acylmethyl taurate, N-methyl-N-alkyl taurine. Salt, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl phenyl ether phosphate, N-acyl amino acid salt, N-acyl- Examples thereof include N-alkyl amino acid salts, Ο-alkyl substituted malates and alkylsulfosuccinates.

  Examples of the cationic surfactant include alkylamine salts, polyamines and alkanolamine fatty acid derivatives, alkyl quaternary ammonium salts, and cyclic quaternary ammonium salts.

  Examples of the amphoteric surfactant include amino acid type and betaine type carboxylic acid type, sulfuric acid ester type, sulfonic acid type, and phosphoric acid ester type, and those that are safe for the human body can be used. For example, N, N-dimethyl-N-alkyl-N-carboxylmethylammonium betaine, N, N-dialkylaminoalkylene carboxylic acid, N, N, N-trialkyl-N-sulfoalkylene ammonium betaine, N, N- Examples thereof include dialkyl-N, N-bis (polyoxyethylene sulfate) ammonium betaine, 2-alkyl-1-hydroxyethyl-1-carboxymethylimidazolinium betaine, and lecithin.

Moreover, it is preferable that a lecithin is mix | blended as a structural component of the emulsified cosmetics of this invention.
Lecithin may be derived from soybeans or other plants, from egg yolk, or not hydrogenated. Further, it may be lysed by enzyme treatment. By blending lecithin, the penetration of the blended ingredients into the skin is increased, and a higher wrinkle improving effect is obtained.

  In addition to the components described above, the emulsified cosmetic used in the present invention, if necessary, a moisturizer, preservative, antioxidant, ultraviolet absorber, emollient, cosmetic ingredient, perfume, water-soluble polymer, Ingredients usually used in cosmetics such as a moisturizing pigment, a colored pigment, a bright pigment, an organic powder, a hydrophobized pigment, and a tar dye can be blended.

  The dosage form of the emulsified cosmetic of the present invention may be either an oil-in-water emulsified cosmetic or a water-in-oil emulsified cosmetic, and any of liquid, low-viscosity emulsion and cream can be applied. . In addition, as the emulsified cosmetic of the present invention, cosmetics that are directly applied to the skin such as lotion, cosmetic liquid, milky lotion, cream and the like can be preferably exemplified.

(Cosmetics to improve skin wrinkles)
First, an appropriate amount of the above-mentioned emulsified cosmetic is applied to a part of the eyelid, mouth, forehead, neck, or the like that is wrinkled or easily formed. After the application, the above-mentioned sheet for skin application is affixed thereon. Although the sticking time of the skin sticking sheet can be set as appropriate, it is usually repeated for 1 hour to 1 day per time, if necessary. The skin sticking sheet may be replaced each time it is used, or may be used repeatedly. In addition, a method of use such as using before going to bed and peeling off the sheet after getting up has the highest effect with little movement of the skin.

(Moisturizing makeup kit)
This invention can also be set as the kit which set 1 or more types of the said emulsified cosmetics, and 1 or more sheets of the said skin sticking sheet.

  EXAMPLES The present invention will be described in detail below using examples, but the scope of the present invention is not limited to the examples.

[Examples 1 to 10 and Comparative Examples 1 to 3]
1 Production of Sheet for Skin Attachment (1) Evaluation of Sheet Base Material First, the usability on the skin due to the difference in sheet base material was examined.
The feeling of use when a sheet for attaching a skin using the sheet base material of the present invention was affixed to the skin surface according to the following test method was tested and listed in the following table. Table 1 also shows the results (n = 5) obtained by measuring the bending resistance of each sheet base material according to the bending resistance A method (45 ° cantilever method) defined in JIS L1096.
<Test method for feeling of use>
A skin application sheet cut into a size of 1 cm in length and 5 cm in width was applied to the center of the inner part of the forearm, and lightly crimped with fingers. The usability when about 5 hours passed after the adhesive bonding was evaluated in three stages according to the following criteria, and the average score is shown in Table 1. (N = 5)
<Evaluation criteria>
3: No discomfort at all.
2: There is almost no sense of incongruity.
1: Somewhat uncomfortable.

  As is apparent from the above table, among polyurethane sheets having relatively flexibility, a sheet base material having a thickness of 15 to 25 mm and a sheet base material having a thickness of 15 to 25 mm and a sheet base material having a thickness of 70 μm are particularly excellent in use feeling. It was.

(2) Manufacture of skin patch sheet <Skin patch sheet using adhesive A>
In an inert gas atmosphere, 100 parts of an acrylic copolymer obtained by copolymerizing 65 parts of isononyl acrylate, 30 parts of 2-methoxyethyl acrylate, and 5 parts of acrylic acid, 100 parts of triglyceryl caprylate, and a crosslinking agent As a mixture, 0.1 part of a trifunctional isocyanate (manufactured by Nippon Polyurethane Co., Ltd., Coronate HL) was blended in toluene to prepare an adhesive solution. The obtained pressure-sensitive adhesive solution was applied onto a separator, dried, and adjusted so that the thickness of the pressure-sensitive adhesive was 30 μm. As shown in Tables 3 to 5 in the following Examples and Comparative Examples, a sheet base material was used. Laminated and transferred to one side. As the sheet base material, the one having the shape shown in FIG. 1 was used.

<Sheet for skin application using adhesive B>
100 parts of an acrylic copolymer obtained by copolymerizing 5 parts of acrylic acid and 95 parts of 2-ethylhexyl acrylate in a nitrogen gas atmosphere, 67 parts of sorbitan trioleate, and trifunctional isocyanate as a crosslinking agent (Japan) 0.14 part of Coronate HL manufactured by Polyurethane Co., Ltd. was blended in ethyl acetate to prepare a pressure-sensitive adhesive solution.
The obtained pressure-sensitive adhesive solution was applied onto a separator and dried, adjusted so that the thickness of the pressure-sensitive adhesive was 50 μm, and laminated and transferred onto one side of a sheet substrate in the same manner as the adhesive A.

<Sheets for skin application using adhesive C>
100 parts of an acrylic copolymer obtained by copolymerizing 5 parts of acrylic acid and 95 parts of 2-ethylhexyl acrylate in a nitrogen gas atmosphere, 40 parts of sorbitan trioleate, and a trivalent epoxy compound as a crosslinking agent ( Nissan Chemical Industries, Ltd. (Tepic-S) 0.05 part was mix | blended in ethyl acetate, and the solution of the adhesive was prepared.
Similarly to the adhesive A, the obtained pressure-sensitive adhesive solution was directly applied to one side of the sheet base material and dried, and the thickness of the pressure-sensitive adhesive above the nonwoven fabric was adjusted to 20 μm.

2 Production of emulsified cosmetic An emulsified cosmetic (a moisturizing eye cream) having the formulation shown in Table 2 was prepared by the following method.

Production method 1. No. 1-No. 10 is mixed uniformly and heated to 70 ° C.
2. No. 11 and no. 12 is heated to 70 ° C.
3. No. 13 and no. 14 is dispersed for 20 minutes at 3000 rpm with an azidisper.
4). Slowly inject 1 into 2 while stirring at 3000 rpm with azidisper and mix for 3 min.
5.4 was cooled to 40 ° C., 3 was added, and after mixing for 3 minutes at 1500 rpm with azidisper, No. 5 was added. 15 and no. Pour 16 and mix for an additional 3 min.

3 Evaluation Test After 14 g of female volunteers applied 0.05 g of the moisturizing eye cream produced in 2 above after night care (referred to as “Cream 1” in the table), Tables 3-5 produced in 2 above The various sheets for skin sticking as shown in FIG. 1 (the compositions of Examples 1 to 10 and Comparative Examples 1 to 3 in the shape of FIG. 1) were applied around the eyes and lightly pressed with fingers.

I went to bed as it was and got up and removed the sheet. This was used continuously for 2 weeks and evaluated as follows.
Regarding the evaluation of wrinkles, the following evaluations were made with respect to “wrinkle improvement”, “skin elasticity”, “skin texture”, “skin adhesiveness”, “skin trouble”, and “no pain when peeling” went. Note that “no pain when peeling” was performed only when evaluating the sheet alone or the difference in adhesive.

"Degree of improvement of cocoon
Judgment was made based on the anti-wrinkle product evaluation guidelines of the Japanese Cosmetic Society (from Japanese Cosmetic Society 30 (4), 316-336 (2006)), and the wrinkle score was evaluated with 8 levels of 0-7. The average of the difference in wrinkle score after 2 weeks of use from the initial wrinkle score is shown in the table as the degree of wrinkle improvement.

"Skin elasticity"
1. No change from before use 2. Skin elasticity increased slightly before use.
3. 3. The elasticity of the skin has increased since before use. Skin elasticity has improved considerably before use.

"Skin texture"
1. No change from before use 2. The skin groove and barn became slightly clearer than before use.
3. The skin groove and barn became clearer before use.
4). The skin groove and barn became clearer than before use.

"Skin adhesiveness"
1. During use, the sheet peeled off 5 times or more.
2. During use, the sheet peeled off 3 to 4 times.
3. During use, the sheet peeled off within 2 times.
4). The sheet did not peel off during use.

"Skin trouble"
1. The skin feels uncomfortable and the skin becomes itchy or red.
2. The skin may feel uncomfortable.
3. 3. Feels almost uncomfortable on the skin. I do not feel any discomfort in the skin

"No pain when peeling"
1. There was a strong pain when removing the sheet.
2. There was pain when peeling the sheet.
3. There was little pain when peeling the sheet.
4). There was no pain when peeling the sheet.

<Evaluation judgment>
Four expert evaluators evaluated and made the following judgments.
◎: Average score is 3.5 or more and 4 or less ○: Average score is 3 or more and less than 3.5 △: Average score is 2 or more and less than 3 ×: Average score is less than 2

  Tables 3 to 5 show the evaluation results of the difference in the material of the sheet base material layer, the difference in thickness, and the difference in pressure-sensitive adhesive of the pressure-sensitive adhesive layer.

  When the water vapor permeability is high, the improvement of wrinkles is not satisfactory. Conversely, when the water vapor permeability is low, skin troubles may occur.

  When the sheet base material is polyurethane, the sheet having a thickness of less than 30 μm is soft, so that the sheet is liable to hardly exert a high effect on wrinkles. On the other hand, the sheet exceeding 250 μm may feel uncomfortable when used because the sheet is hard.

Although there was a difference in the pain when peeling from the skin adhesive depending on the thickness of the adhesive layer, there was no problem in usability.
As the type of the pressure-sensitive adhesive, a gel pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive containing an organic liquid component is preferable.

[Examples 11 to 21, Comparative Examples 4 to 10]
To the eyes, 0.05 g of oil-in-water emulsified cosmetic moisturizing eye creams of Examples 11 to 21 and Comparative Examples 4 to 10 shown in Tables 6 and 7 were applied, and the same gel-based adhesive as in Example 1 was applied. Apply a sheet for skin application (Boomerang type, see Fig. 1) and lightly press it with your finger. Evaluation was carried out after continuing the life of going to bed and removing the sheet after waking up for two weeks. Measured with n = 4 for each product. For 36 female volunteers. As for Comparative Example 10, after applying the cream, the patient went to bed without attaching a sheet and evaluated in the same manner as the sheet attaching part.

Eye creams having the formulations shown in Tables 6 and 7 were prepared by the following method.
1. No. 11 and no. Disperse No. 12 at 3000 rpm for 20 min with Aji Disper.
2. No. 1-No. 9 is mixed uniformly and heated to 70 ° C.
3. No. 10 is heated to 70 ° C.
4). While stirring at 3000 rpm with an azidisper, 2 is gradually injected into 3 and mixed for 3 min.
5.4 was cooled to 40 ° C., 1 was added, and after mixing for 3 min at 1500 rpm with azidisper, No. 1 in which sodium hydroxide was dissolved was added. Pour 14 and mix for an additional 3 min.

(Evaluation test)
Evaluation was carried out in the same manner as in the evaluation tests of Examples 1 to 10, with the four items of “wrinkle improvement degree”, “skin elasticity”, “skin texture”, and “skin adhesiveness” being determined for each effect. In addition, the unit of the numerical value of each component shows the mass% in a table | surface.

（注）商品名 ペミュレンＴＲ−１（NOVEON社製）

(Note) Product name Pemulen TR-1 (NOVEON)

（注）商品名 ペミュレンＴＲ−１（NOVEON社製）

(Note) Product name Pemulen TR-1 (NOVEON)

N-lauroyl-L-glutamate di (cholesteryl, behenyl, octyldodecyl) and dipentaerythritol fatty acid ester are not only paste oils but also have high water retention and are very effective.
Nonpolar oil such as liquid paraffin reduces the adhesive strength of the gel-based pressure-sensitive adhesive when applied alone, but the tackiness is improved by emulsification as in Example 19-21. Furthermore, mixing nonpolar oils with polar oils prevented them from peeling off during use, which improved the wrinkles. Moreover, from the impression after a test subject's use, it turned out that the sample of a paste-type oil agent mixing | blending has very high test subject's own skin improvement effect feeling.

  In Comparative Example 4, since no oil agent was blended and the emollient effect was lacking, there was no improvement in skin elasticity or recovery of texture. Since Comparative Example 5-7 was not mixed with moisture, it was insufficient to suppress skin dryness and lacked the moisturizing effect that is the basis of skin care. When the skin condition is dry, the recovery effect such as enzyme activity of the skin itself cannot be expected. In Comparative Example 8, there was no oil formulation, so there was some pain when the sheet was peeled off, and no wrinkle recovery was observed. In Comparative Example 9, the amount of the oil agent was too large, the adhesive strength of the adhesive tape could not be maintained, and the sheet was peeled off during sleeping, so a good result was not obtained. In Comparative Example 10, the effect was felt only with the cream alone, but there was no wrinkle improvement effect.

[Example 22]
An eye cream (water-in-oil emulsified cosmetic: emulsion) having the formulation shown in Table 8 was prepared by the following method.

Production method 1. No. 1-No. 7 is mixed evenly.
2. No. 8-No. Mix 10 evenly.
3. Slowly inject 2 into 1 while stirring at 3000 rpm with azidisper and mix for 5 min.

  The emulsion of Example 22 was applied to the entire face, and the same skin application sheet as in Example 1 that had been appropriately sized was applied to the wrinkle area of concern and then went to bed. The sheet affixing part was observed the next day, and the dry state and texture of the stratum corneum could be improved. The degree of wrinkle improvement after continuous use for 2 weeks was 0.125.

[Example 23]
An eye cream (oil-in-water emulsified cosmetic: massage cream) having the formulation shown in Table 9 was prepared by the method shown below.

Production method 1. No. 1-No. 4 is heated to 75 ° C. and mixed uniformly.
2. No. 5-No. 11 is heated to 75 ° C. and mixed uniformly.
3. Slowly inject 2 into 1 while stirring at 3000 rpm with azidisper at 75 ° C. and mix for 5 min.

  After massaging the eyes with the massage cream of Example 23, a skin patch sheet was affixed and the patient went to bed. Observation of the next day showed that wrinkles were reduced and the dryness and texture of the stratum corneum were improved. The degree of wrinkle improvement after continuous use for 2 weeks was 0.5.

[Example 24]
Eye creams (oil-in-water emulsified cosmetics) having the formulations shown in Table 10 were prepared by the following method.

Production method 1. No. 1-No. 6 is heated to 75 ° C. and mixed uniformly.
2. No. 7-No. Heat 9 to 75 ° C and mix uniformly.
3. Slowly inject 2 into 1 while stirring at 3000 rpm with azidisper at 75 ° C. and mix for 5 min.
4. No. 3 heated to 75 ° C. with stirring at 3000 rpm with Aji Disper at 75 ° C. Slowly inject 10 and mix for 5 min.
Cool 5.4 to 40 ° C.
6). No. 5 to No. 5 while stirring at 1500 rpm with Aji Disper. 11-No. 13 is mixed.
7). No. 6 to No. 6 while stirring at 1500 rpm with Aji Disper. 14 and no. 15 is mixed.

After applying the eye cream of Example 24 around the skin, a sheet for skin application was affixed and the patient went to bed.
Observation of the next day showed that wrinkles were reduced and the dryness and texture of the stratum corneum were improved. The degree of wrinkle improvement after continuous use for 2 weeks was 0.5.

Claims (9)

After applying an emulsified cosmetic containing 5 to 50% by mass of an oily component on the skin, the sheet has a sheet base layer and an adhesive layer that can adhere to the skin surface, and the sheet base layer and the adhesive layer A cosmetic method comprising applying a skin patch sheet having a water vapor permeability of 200 to 2,000 g / m ² · 24 hrs of the entire sheet including The cosmetic method according to claim 1, which is a cosmetic method for improving skin wrinkles or suppressing wrinkle generation. The cosmetic method according to claim 1 or 2, wherein the tensile strength of the entire sheet including the sheet base material layer and the pressure-sensitive adhesive layer is 20 to 200 N / cm. The cosmetic method according to any one of claims 1 to 3, wherein the sheet base material layer is made of polyurethane. The beauty method according to any one of claims 1 to 4, wherein the sheet base material layer has a thickness of 30 to 250 µm. The cosmetic method according to any one of claims 1 to 5, wherein the pressure-sensitive adhesive layer comprises a gel-based pressure-sensitive adhesive containing an organic liquid component. The cosmetic method according to any one of claims 1 to 6, wherein the oily component contains 10 to 80% by mass of a water-soluble oily component. The emulsified cosmetic contains 0.5 to 6% by mass of one or more amphiphilic substances selected from higher alcohols, fatty acid monoglyceryls and glycerin alkyl ethers. The beauty method of crab. A sheet base material layer, a pressure-sensitive adhesive layer that can adhere to the skin surface, and a release layer, and a water vapor permeability sheet of 200 to 2,000 g / m ² · 24 hrs, and an oily component of 5 to 5 A beauty kit having an emulsified cosmetic containing 50% by mass.

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