Age doesn't matter
Microdermabrasion refers to a category of techniques and devices which rejuvenate the very upper layers of the skin. It typically impacts the stratum corneum, helping to exfoliate the skin and removing dead cells. This results in an improvement in the texture of the skin, diminishing fine lines and improving areas of darker pigmentation such as age spots.
There are a variety of treatments categorized as microdermabrasion, such as creams with abrasive particulates that are scrubbed on the skin, procedures utilizing crystals which are passed across the skin with a suction device to sand the skin down, among others. There are also non-particulate devices, using abrasive paddles or diamond coated paddles that superficially remove the top layer of the skin.
A doctor may be more or less aggressive with microdermabrasion and do it in combination with other techniques, like chemical peels in an attempt to get greater results.
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The skin will generally feel smoother right after treatment with a diminished appearance of age spotting and skin discoloration.
Consult a Doctor
Its advisable to consult with an experienced physician for treatment of sun spots with any device, including microdermabrasion, as they may discuss the various treatments available.