Laser resurfacing uses a�laser�to send out brief pulses of high-energy light that are absorbed by water and substances in the skin called chromophores. The light is changed into heat energy, and the heat then destroys (vaporizes) thin sections of skin, layer by layer. As the wounded area heals, new skin grows to replace the damaged skin that was removed during the laser treatment. Some lasers only tighten the skin by heating it but do not destroy the skin.The CO2 (carbon dioxide) laser is the most common type of laser used for resurfacing. Erbium lasers are also used frequently. Laser resurfacing is usually very precise and causes little damage to the surrounding skin and tissue. It is done most often on the face, but it may be done on skin in other areas of the body. The hands, neck, and chest may be avoided because skin in these areas does not heal as well as it does in other areas. It tends to thicken and scar as a result of the laser treatment. Some surgeons are willing to treat the neck using a lower-energy laser.