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.本發明提供一種客觀地評價皮膚光澤之評價方法、皮膚光澤提升劑及該皮膚光澤提升劑之探索方法。本發明之皮膚光澤之評價方法係於使偏光向皮膚之表面入射後，求出鏡面反射率與漫反射率，於滿足特定之條件之情形時判定皮膚具有光澤。本發明之皮膚光澤提升劑係藉由調配烷氧基水楊酸之鹼金屬鹽及三甲基甘胺酸而提供。本發明之皮膚光澤提升劑之探索方法可藉由將表面粗糙度之有意義之減少設為指標而探索能夠提升鏡面反射率之試樣。
