dermabrasion
This technique removes both superficial and deeper layers of skin to affect a more dramatic cosmetic improvement. First the dermatologist can choose to either freeze the skin in order to numb it or to use a local anesthesia. Then, with a rotating wire brush or spinning diamond instrument, the doctor "abrades" or wears down the surface of the skin. As the abraded area heals, a new layer of smoother skin replaces the old. It can take 10 days to 3 weeks for the skin to heal and it may remain red for several months.
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