Plastic Surgery: Laserasing Tattoos

Conventional plastic surgery to remove tattoos takes a long time and often leaves unsightly scars. But using laser beams, a team of University of Cincinnati doctors have developed a technique that literally explodes tattoo dyes out of skin, with less pain and often less scarring.

Like ordinary light, the powerful coherent beam of the laser passes relatively unobstructed through transparent skin, giving up little of its energy in the form of heat. When it hits the colored dye particles beneath the surface of the skin, it is absorbed and converted into intense...

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