Microdermabrasion is a skin-freshening technique that helps repair facial skin that takes a beating from the sun and the effects of aging. The plastic surgeon uses a device like a fine sandblaster to spray tiny crystals across the face, mixing gentle abrasion with suction to remove the dead, outer layer of skin. As with other skin rejuvenation techniques, more than one treatment may be needed to reduce or remove fine wrinkles and unwanted pigmentation.