Potassium permanganate granules are dissolved in sterile water and applied to the skin to protect against infections and germs, according to MedicineNet. Users are directed to wash and dry the skin of the affected area before applying a small amount of the potassium permanganate solution.
The medication can cause skin and eye irritation, notes MedicineNet. A doctor should be consulted if redness or skin irritation develops or if the user notices other side effects. Potassium permanganate should only be used during pregnancy with the advice of a doctor. Potassium permanganate is a chemical salt that turns pink or purple when dissolved in water, according to Wikipedia.