laser in skin cancer

 lasers can be ablative (i.e., they vaporize the top layer of the skin), such as the CO₂or erbium laser, or nonablative (i.e., a resurfacing laser that eliminates wrinkles without any peeling of the skin).

The use of either ablative or many of the nonablative lasers increases collagen formation, which translates into an improvement in fine lines and wrinkles.

None of the aforementioned lasers increase the chances of developing skin cancer — in fact, some of the lasers are useful in treating pre-cancerous lesions, thus reducing the risk of developing skin cancer

http://www.facialskincancer.com/html/laser_surgery.php