Ketz Soap is an antifungal medication. It is used to treat fungal infections on the skin. Ketz Soap is an antifungal medication. It is used to treat fungal-related skin illnesses. These include athlete's foot, ringworm, vaginal thrush, and sweat rash. It works by destroying and inhibiting the growth of fungus, therefore eliminating the infection and alleviating symptoms. Even if your symptoms go away, you should continue to take this medication as advised; otherwise, they may return. Depending on the sort of infection you are treating, this could take many weeks. Even if your skin is entirely healed, you may need to apply the cream on a regular basis to keep the symptoms from recurring.