You can treat flaking and dryness with over
dandruff or medicated shampoos. Shampoo the
hair vigorously and frequently (preferably daily). Active ingredients in these shampoos include salicylic acid, coal tar, zinc, resorcin, ketoconazole, or selenium. Mostly the hair loss due to seborrheic dermatitis is not permanent until and unless there is any damage to the hair follicle and hence the hair grow back.