There are three types of topical medications: one is therapeutic; one is restorative; and the last one is maintenance. A. Therapeutic topical drugs are drugs formulated for individual skin diseases in different periods such as (acute phase; subacute phase; chronic phase). It has a therapeutic effect on the lesion, but also has damage to the normal skin. At the same time, most of the therapeutic drugs will be added with hormonal drugs, so patients should strictly comply with medical advice on the use of drugs. In general, if the patient’s condition is not relieved after three days of using therapeutic topical medication, you should promptly consult your doctor in charge whether to switch to other topical medication or carefully look for the cause of the disease again, so as to play a good role in the recovery of the disease. After remission, you should gradually reduce the dosage or reduce the number of times you use the medication. Remember not to suddenly stop the drug! Treatment medication application method 1, strictly in accordance with the number of times and days of application of medication prescribed by the doctor; if the number of times or days of application is too long, local skin may appear hirsutism; dandruff; thinning of the skin; pigmentation. 2, topical drug application thicker case, will make the skin local tissue impermeable, easy to cause skin edema or even ulceration, prolong skin healing. 3.Application of topical medication under pressure will aggravate edema and severe flaking of the skin. 4, for chronic skin lesions need to seal package treatment, must be implemented under the regular operation of doctors or nurses. Second, restorative topical drugs In the case of improving lesions, use restorative topical drugs as early as possible according to the condition. The healed skin should be personalized according to the PH value of the skin.