After staining your hands with potassium permanganate, first remove most of the potassium permanganate powder from your hands by tapping and other actions, and then remove the potassium permanganate from your skin by rinsing repeatedly with cold water. Potassium permanganate is a strong oxidizing agent, and its oxidizing property is even stronger under acidic conditions. Easily soluble in water, highly concentrated aqueous solutions of potassium permanganate are more corrosive to the skin and can cause chemical burns to the skin. If powdered potassium permanganate gets on the hands, you first need to remove most of the powdered potassium permanganate by tapping and other actions, and then rinse the remaining potassium permanganate with cold water. Rinsing for a long time and immersion is not recommended because the resulting solution of potassium permanganate will flow away with the running water and will not seriously damage the skin. If your hands are contaminated with a high concentration of potassium permanganate solution, you can immediately use toilet paper, cotton cloth and other materials to dip away most of the solution contaminated to the skin, and then immediately find water to rinse, the specific process as above. It should be noted that after rinsing, you should go to the hospital in time to check the skin damage and treat it under the doctor’s guidance.