Definition: Lasers are medical devices that use a direct beam of radiation to penetrate the deeper level of the skin, called the dermis, and create a reaction. Lasers treatments address a variety of conditions, including unwanted hair (laser hair removal), uneven pigmentation, and broken capillaries or spider veins and dull pitted skin.
The word laser is an acronym for "light amplification by stimulated emission of radiation." The first esthetic lasers, ND:YAG and CO2, were created in 1964 and 1965.
