Varicose veins are large, dark in color and tend to bulge. To cosmetically improve or remove them, dermatologists often treat varicose veins with sclerotherapy, a procedure performed in the doctor’s office. It involves injecting a solution (usually sodium chloride) directly into the vein via a very fine needle. This solution irritates the lining of the vessel, eventually causing it to collapse and disappear. Some lasers are also effective at treating veins. During a one-on-one consult with the dermatologist, you will be advised of the best course of treatment for you.