Laser procedures that remove brown spots are fractional laser skin resurfacing, plasma skin resurfacing and superficial erbium:YAG laser resurfacing, notes WebMD. Infrared laser resurfacing is also used to remove brown spots.
These procedures are all forms of laser therapy, as MedlinePlus explains. They use focused light to destroy unwanted skin lesions. During laser therapy to remove brown spots, a laser is used to destroy the melanocytes in the skin, notes Mayo Clinic. These cells give color to the brown spots.
The types of lasers most often used for laser resurfacing are the carbon dioxide and the erbium lasers, states WebMD. Dermatologists and patients appreciate this treatment because it removes the brown spots while leaving the surrounding skin more or less undamaged.