How Much Does Varicose Vein Treatment Cost : Spider veins are tiny, shattered veins that are often visible on the surface of the legs or the face. Mostly, they are not painful but most individuals want to eliminate them due to cosmetic reasons. They can be red, purple, or blue in the form of thin lines or webs. Do spider veins come back after laser treatment? After the laser treatment, there are possibilities that they might reverse.