| abstract |
The invention concerns the use of topical cosmetic or dermatological preparations containing one or a plurality of active substances selected from the group of compounds comprising arginine, citrulline, ornithine or their salts, acid addition salts, esters or amides, folic acid or its salts, cysteine, N-acetylcysteine, homocysteine, glutamine, flavins and ceramides, for treating keratosis or skin cancer and for the preventive treatment of the skin to protect it against these diseases. |