Parakeratosis inhibitor and skin preparation for external use

Abstract

To provide a parakeratosis inhibitor, pore reducing agent and skin roughness preventing/ameliorating agent that exhibit capabilities of parakeratosis inhibition, pore reduction, skin roughness prevention/amelioration, etc., and further provide a skin preparation for external use having these capabilities. There are provided a parakeratosis inhibitor, a pore reducing agent and a skin roughness preventing/ameliorating agent each comprising at least one compound selected from the group consisting of specified glycine derivatives and salts thereof and specified aminosulfuric acid derivatives and salts thereof. Still further, there are provided skin preparations for external use comprising these compounds.

1 . A parakeratosis inhibitor agent, pore-shrinking agent, or skin roughness preventing/ameliorating agent comprising one or two or more compounds selected from a group consisting of aminosulfuric acid derivatives and the salts thereof as represented by general formula (10) 
       
         
           
           
               
               
           
         
         wherein the above general formula (10), R 7  represents a hydrogen atom or a hydroxyl group. 
       
     
     
         2 . A parakeratosis inhibiting skin preparation for external use comprising a parakeratosis inhibitor agent in accordance with  claim 1 . 
     
     
         3 . A pore-shrinking skin preparation for external use comprising a pore-shrinking agent in accordance with  claim 1 . 
     
     
         4 . A skin roughness preventing/ameliorating skin preparation for external use comprising a skin roughness preventing/ameliorating agent in accordance with  claim 1 .