Macrodermabrasion a more intensive procedure than microdermabrasion. Glycolic acid and ultrasonic energy are applied simultaneously to the skin. The process provides deep thermal stimulation of the dermis, with increased penetration of the glycolic acid compound. The texture and tightness of the skin improve greatly. Macrodermabrasion provides added benefits over microdermabrasion in the treatment of sundamage, fine lines, age spots, some forms of acne scars, and uneven skin tones.