Patent ID: 6106850
Filing Date: 2000-08-22
Classification: A61K,A61Q,Y10S

Abstract:
A topically applicable UVA photoprotective cosmetic/dermatological composition, comprising:an effective photoprotecting amount of at least one UVA screening agent substituted by one sulfonic acid group having formula (I): ##STR9## wherein Y is --H or --SO.sub.3 H, optionally neutralized; n is equal to 0 or is a number ranging from 1 to 4; and R.sub.1 is at least one linear or branched chain alkyl or alkoxy radical, which may be identical or different, having from 1 to 4 carbon atoms, and an effective UVA photoprotecting-enhancing amount of at least one otherwise non-UVA photoprotecting iron chelating agent having an association constant with ferrous or ferric ions greater than 10.sup.2 and selected from the group consisting of the salts of ethylenediaminetetramethylenephosphonic acid and ethylenediaminetetraacetic acid, citric acid, tartaric acid, phytic acid and salts of these acids and dibenzyldithiocarbamate, in a cosmetically/dermatologically acceptable topical vehicle, carrier or diluent therefor.