Each brown spot is usually smaller than the tip of a q-tip but looks awful and only gets worse untreated. The trick is the ability of the dermatologist; going deep enough to remove the discoloration but not so deep that there is lightening or scarring. It's so much kinder than a facial chemical peel. The day of treatment the spot is pink and stings. The next few days the pick spot turns dark due to the dead skin (conceal with make-up). By one week the spot is gone. My doctor charges about $100 for removing 13 spots.