| abstract |
PURPOSE: To provide a skin external agent not producing a peroxide by oxidation, preventing the glow, blotch, freckle, etc., of the skin after sunburn and having excellent aging preventing and whitening activities by compounding kojic acid (derivative), keratin and a specific compound such as vitamin B 2 . n CONSTITUTION: A skin external agent contains (A) a compound of the formula (R 1 , R 2 are H, 3-22C acyl or alkyl) and (B) one or more kind of keratin compounds, keratin hydrolysates, vitamin B 2 compounds, vitamin D compounds, isopropyl methyl phenol, quercetine, quercitrin, rutin, liquiritin, gallic acid (derivative) and catechin (derivative) (especially preferably keratin hydrolysates, rutin, riboflavin butyric acid ester) in an A:B ratio of 0.01-3.0wt.%, preferably 0.01-3.0wt.%, : 0.0001-5.0wt.%, preferably 0.001-3.0wt.%. n COPYRIGHT: (C)1991,JPO&Japio |