The Fraxel® Dual laser is an innovative fiber-laser designed to make tiny microthermal treatment zones in the skin, stimulating a healing response that replaces the sun-damaged collagen and elastin in photoaged skin with healthier skin, and the disordered collagen fibers of scars with more normally organized collagen. It is called the Fraxel® Dual because if offers 2 wavelengths, 1,927 nm for treating more superficially and 1,550 nm for treating more deeply. The Fraxel® Dual Laser is fantastic for treating acne scarring and for rejuvenation of photoaging in all but the darkest skin types.