Zolinov contains Ketoconazole in soap form which is an antifungal medication. It kills and stops the growth of the fungi by destroying its cell membrane, thereby treating your skin infection. Ketoconazole Soap belongs to a group of medicines called antifungals. It is used to treat fungal infections of the skin. It works by killing the fungus that causes infections such as athlete’s foot, thrush and ringworm.