The medication Zolvin-F Ointment is a combination. It is used to treat a variety of skin illnesses, most commonly fungal infections. The medication Zolvin-F Ointment is an antifungal. It is used to treat fungal skin infections. These include sweat rash, vaginal thrush, ringworm, and athlete's foot. It eliminates the infection and alleviates the symptoms by destroying and halting the growth of fungus. Even if your symptoms go away, you should continue taking this medication as directed because it may cause them to recur. This could take a few weeks, depending on the kind of infection you are treating. To keep the symptoms from coming again, you might need to use the cream occasionally even after your skin has fully healed.