Clean and thoroughly dry the area to be treated. Apply a thin layer of the cream to the affected skin. Apply enough medication to cover the affected skin and some of the surrounding skin. Do not wrap, cover or bandage over the treated skin unless directed to do so by your doctor. Wait at least 20 minutes after applying for this medicine before you use cosmetics or sunscreen on the treated skin area. Do not wash the treated skin for at least 3 hours after applying Ketomac cream. Use only once or twice a day or as directed by your doctor. This medicine is usually used for only 2 to 4 weeks.