The most commonly used medicines in dermatology are various salves and ointments, here is how to use them. 1, in the skin lesions more water, you can not use ointment, but need to use salve wet compress, the specific use is: the four layers of gauze wet with salve, paste in the affected area, adults each 15-20 minutes, children each 10 minutes or so. 4 to 5 times a day, no longer flowing water can no longer dressing. 2, not flowing skin lesions smear the medicine when just wipe the medicine on the line. If you want to wipe the cream, you can use warm water to wipe the affected area slightly (if the affected area is relatively clean can not be wiped), and then apply a thin layer of cream, gently massage until the drug is absorbed. The amount of medicine is generally the length of an index finger finger ointment can be wiped two palm size area, if not grasp on a thin layer is good. 3, for the thicker lesions, wipe the ointment with plastic wrap seal for an hour or so, the effect will be better. 4, the amount of topical medicine is not the more, the more times to wipe the better, according to the requirements of the line.