Method for evaluating glow of skin, method for examining skin glow improvers, and skin glow improver

Abstract

Provided are an evaluation method for objectively evaluating the glow of the skin, a skin glow improver, and a method for examining skin glow improvers. This method for evaluating the glow of the skin comprises assessing the specular reflectance and diffuse reflectance of skin after polarized light is applied to the surface of the skin, and determining that glow is present in the skin when prescribed conditions are satisfied. A skin glow improver is provided by combining an alkali metal salt of alkoxysalicylic acid and trimethylglycine. This method for examining skin glow improvers makes it possible, using a significant decrease in surface roughness as an indicator, to examine samples capable of improving the specular reflectance of the skin.

1 - 7 . (canceled) 
     
     
         8 . A method for improving a glow of a skin comprising applying to a skin of a subject who desires to improve a skin glow a skin glow improving amount of alkoxysalicylic acid or an alkaline metal salt thereof. 
     
     
         9 . The method of  claim 8 , wherein said applying comprises applying potassium 4-methoxysalicylate to the skin of the subject. 
     
     
         10 . The method of  claim 8 , further comprising applying trimethylglycine to the skin of the subject. 
     
     
         11 . The method of  claim 9 , further comprising applying trimethylglycine to the skin of the subject. 
     
     
         12 . The method of  claim 9 , wherein a concentration of potassium 4-methoxysalicylate is 0.5% to 3%. 
     
     
         13 . The method of  claim 10 , wherein a concentration of trimethylglycine is 2% to 10%. 
     
     
         14 . The method of  claim 11 , wherein a concentration of trimethylglycine is 2% to 10%. 
     
     
         15 . The method of  claim 8 , wherein the subject further desires to enhance a specular reflectance. 
     
     
         16 . The method of  claim 8 , wherein the subject has a dull skin. 
     
     
         17 . The method of  claim 8 , wherein the skin of the subject has a glossy or greasy shine. 
     
     
         18 . The method of  claim 8 , wherein the subject has translucent skin. 
     
     
         19 . A composition, comprising skin glow improving amounts of a) alkoxysalicylic acid or an alkaline salt thereof and b) trimethylglycine. 
     
     
         20 . The composition of  claim 19 , wherein the alkoxysalicylic acid or the alkaline salt thereof is potassium 4-methoxysalicylate. 
     
     
         21 . The composition of  claim 20 , wherein a concentration of potassium 4-methoxysalicylate is 0.5% to 3%. 
     
     
         22 . The composition of  claim 19 , wherein a concentration of trimethylglycine is 2% to 10%. 
     
     
         23 . The composition of  claim 20 , wherein a concentration of trimethylglycine is 2% to 10%. 
     
     
         24 . The composition of  claim 21 , wherein a concentration of trimethylglycine is 2% to 10%.