http://www.lumiermedical.com/sclerotherapy.php - Sclerotherapy is the gold standard treatment for unsightly spider veins of the legs. It is a minimally invasive, gentle procedure that carefully introduces a special solution known as a sclerosant into unwanted small blood vessels. The inner wall of those blood vessels known as the endothelial lining is intentionally compromised so that the diseased veins harden and eventually shrink. Over time, they fade from view.