External skin care composition

Abstract

The invention relates to an external skin care composition comprising a ceramide production-accelerating agent and a film-forming polymer. The external skin care composition can enhance the barrier function of the skin and has an excellent skin roughness-improving effect.

1 . An external skin care composition comprising a ceramide production-accelerating agent and a film forming polymer, wherein the ceramide production-accelerating agent is (i) at least one plant selected from the group consisting of eucalyptus, hop, zingiber,  Uncaria gambir  Roxburgh,  Rosa multiflora  Thunberg, lily, Job's tears, cattail, loquat, cape jasmine,  Saponaria officinalis  Linne, white birch, hydrangea, clove, safflower,  Sanguisorba officinalis  Linne, and  Sophora flavescens  Aiton, or an extract, steam distilled product or pressed product of said plant: (ii) at least one member selected from the group consisting of nicametate citrate, quinolinic acid, pyridine-3,5-dicarboxylic acid, nicotinamide adenine dinucleotide phosphate, nicotinic acid mononucleotide, nicotinyl alcohol and tartaric acid nicotinyl alcohol; or a mixture of (i) and (ii).  
     
     
         2 - 3 . (Cancelled)  
     
     
         4 . The external skin care composition according to  claim 1 , wherein the film-forming polymer is at least one member selected from the group consisting of natural polymers, acrylic resins, silicones, celluloses, alkyd resins, carboxyvinyl polymers, olefin-maleic anhydride copolymers and salts thereof, epoxy resins, polymers and copolymers of vinylpyrrolidone, amphoteric polymers, and synthetic polyelectrolytes.  
     
     
         5 . The external skin care composition according to  claim 1 , wherein the film-forming polymer is at least one member selected from the group consisting of mucopolysaccharides, silicones, ionic group-containing polymers, polyvinyl alcohol, polyvinyl pyrrolidone, polyethylene glycol, polyacrylamide and alkyl acrylate copolymers.  
     
     
         6 . The external skin care composition of  claim 1 , wherein said ceramide production-accelerating agent is present in an amount of 0.00001 to 20% by weight.  
     
     
         7 . The external skin care composition of  claim 1 , wherein said ceramide-production accelerating agent is present in an amount of 0.001 to 10% by weight.  
     
     
         8 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one natural polymer selected from the group consisting of proteins, collagen, chitin, chitosan, gum arabic, guar gum, locust bean gum, xantham gum, acid hetero-polysaccharides prepared from the callus of plants of the genus  Polanthes L ., carrageenan, pullalan, pectin, dextrin, quince ( Cydonia oblongata ), agar, hyaluronic acid, chondroitin sulfate, methyl polyglutamate, ethyl polyglutamate, sodium alginate, potassium alginate, and propylene glycol alginate.  
     
     
         9 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one acrylic resin selected from the group consisting of polyacrylic acid, poly(methyl acrylate), poly(ethyl acrylate), poly(butyl acrylate), polyacrylamide, poly(N-isopropylacrylamide), ammonium polyacrylate, sodium polyacrylate, crosslinked sodium polyacrylate, poly methacrylic acid, poly(methyl methacrylate), poly(ethyl methacrylate), poly(butyl methacrylate), polymethacrylamide, sodium methacrylate, acrylic acid-styrene-ammonium methacrylate copolmyers, acrylic acid-styrene copolymers, acrylic acid-methacrylamide copolymers, alkyl acrylate-styrene copolymers, alkyl acrylate-styrene copolymers, alkyl acrylate copolymers, ethyl acrylate-acrylamide-acrylic acid copolymers, ethyl acrylate-butyl acrylate copolymers, ethyl acrylate-ethyl methacrylate copolymers, ethyl acrylate-butyl acrylate copolymers, ethyl acrylate-ethyl methacrylate copolymers, ethyl acrylate-methyl methacrylate-acrylic acid copolymers, ethyl acrylate-methyl methacrylate copolymers, ethyl acrylate-methacrylic acid copolymers, octyl acrylate-styrene copolymers, octyl acrylate-vinyl acetate copolymers, hydroxypropyl acrylate-butylaminoethyl methacrylate-acrylic acid acrylamide copolymers, butyl acrylate-ethyl hydroxymethacrylate copolymers, butyl acrylate-hydroxymethacrylic acid copolymers, butyl acrylate-methacrylic acid copolymers, butyl acrylate-vinyl acetate copolymers, methyl acrylate-ethyl acrylate copolymers, methyl acrylate-styrene copolymers, methoxyethyl acrylate-hydroxyethyl acrylate-butyl acrylate copolymers, methoxyethyl acrylate-hydroxyethyl acrylate copolymers, acrylic resin alkanolamines, methacrylic acid-styrene copolymers, methacrylic acid-butyl methacrylate copolymers, methacrylic acid-methyl methacrylate copolymers, and methyl methacrylate-butyl acrylate-octyl acrylate copolymers.  
     
     
         10 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one silicone selected from the group consisting of alkyl-modified silicones, oxazoline-modified silicones, dimethylsiloxane-methylcetyloxysiloxane copolymers, and high molecular weight polysiloxanes.  
     
     
         11 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one cellulose selected from the group consisting of methyl cellulose, ethyl cellulose, cationized cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropylmethyl cellulose.  
     
     
         12 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one alkyd resin selected from the group consisting of alkyd resins of isophthalic acid, epoxy-modified alkyd resins of phthalic acid, alkyd resins of succinic acid, alkyd resins comprising cyclohexane groups, alkyd resins comprising cyclohexene groups, alkyd resins of phthalic acid, and rosin-modified alkyd resins of maleic acid.  
     
     
         13 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one carboxyvinyl polymer selected from the group consisting of carboxyvinyl polymers, alkyl-modified carboxyvinyl polymers, and calcium or potassium salts thereof.  
     
     
         14 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one olefin-maleic anhydride copolymers or salt thereof selected from the group consisting of ethylene-maleic anhydride copolymers and isobutylene-sodium maleic anhydride copolymers.  
     
     
         15 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one epoxy resin selected from the group consisting of bisphenol A epoxy resin stearic acid esters, epoxy bisphenol A epoxy resin ricinoleic acid esters, epoxy resin beef tallow fatty acid esters, and epoxy resin whale oil fatty acid esters.  
     
     
         16 . The external skin care composition of  claim 4 , wherein the film-forming polymer is at least one vinylpyrrolidone polymer selected from the group consisting of poly(vinyl pyrrolidone), vinylpyrrolidone-styrene copolymers, vinylpyrrolidone-vinyl acetate copolymers, and diethyl sulfate vinylpyrrolidone-N,N-dimethylaminoethyl-methacrylic acid copolymers.  
     
     
         17 . The external skin care composition of  claim 4 , wherein the film-forming polymer is a N-methacryloylethyl-N,N-dimethylammonium-N-methyl-carboxybetaine-butyl methacrylate copolymer.  
     
     
         18 . The external skin care composition of  claim 4 , wherein the film-forming polymer is poly(methacryloyloxyethyltrimethylammonium chloride).  
     
     
         19 . The external skin care composition of  claim 4 , wherein the film-forming polymer is present in an amount of 0.001 to 60% by weight.  
     
     
         20 . The external skin care composition of  claim 4 , wherein the film-forming polymer is present in an amount of 0.005 to 40% by weight.  
     
     
         21 . The external skin care composition of  claim 1 , wherein the composition further comprises at least one surfactant, oil, sterol, amino acid, moisturizer, powder, ultraviolet absorbent, gelling agent, antiinflammatory agent, antioxidant, and pH adjuster.  
     
     
         22 . A cosmetic comprising the composition of  claim 1 .  
     
     
         23 . The cosmetic of  claim 22 , wherein said cosmetic is selected from the group consisting of a foundation, a powder, a lip stick, a cheek rouge, an eye shadow, a nail enamel, and a bath additive.  
     
     
         24 . The external skin care composition of  claim 1 , wherein the composition has apH of 2 to 11.  
     
     
         25 . The external skin care composition of  claim 1 , wherein the composition has a pH of 3 to 9.