This invention relates to the association of a retinoid and of an extract ofSilybum marianum (L.) Gaertn.,the dermatological and dermo-cosmetic compositions containing such an association, as well as their uses as a medicament, in particular in the treatment of acne, seborrhoea, seborrhoeic dermatitis and/or rosacea.本發明係有關於一種類視色素與水飛薊(Silybum marianum (L.) Gaertn.)之一萃取物的締合物,含有這樣一種締合物的皮膚科與皮膚美容組成物,還有它們作為一醫藥品的用途,特別是在痤瘡、皮脂漏、脂漏性皮炎和/或酒渣的治療上。