Laser treatments can quickly and effectively remove spider veins with minimal discomfort. Spider veins are very common and most adults will develop them. They can result from heredity, sun damage, general aging and certain diseases. While they are not painful, they can be embarrassing. Laser therapy uses a focused beam of light that heats and damages the affected blood vessel, which eventually fades. Laser vein removal requires no injections or incisions and only a minimal amount of heat is experienced.