| abstract |
The invention relates to the use of 3-hydroxylcoumarin derivatives of general formula (I) or the physiologically acceptable salts thereof or a preparation containing at least one compound of formula (I), wherein R<SUB>1 </SUB>to R<SUB>4</SUB> can be the same or different and are selected from -H, -OH, -OA, -A, -OCOA, R<SUB>1</SUB> and R<SUB>2</SUB> together can be methylene dioxy or ethylene dioxy, and A represents alkyl or R-substituted alkyl radical, phenyl or R-substituted phenyl radical, for improving the general state of the skin, and for the prophylaxis and/or treatment of skin diseases, especially hyperpigmentation. |