Use of alverine (I) or its salts as an antibacterial- and/or antifungal agent for preparing a medicament for treating skin diseases, is claimed. Independent claims are included for: (1) the alverine (I) or its salts as an antibacterial agent and/or antifungal treatment of skin diseases; and (2) a composition comprising (I) as an antibacterial- and/or antifungal agent. ACTIVITY : Antibacterial; Fungicide; Dermatological; Antiseborrheic. MECHANISM OF ACTION : None given.