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