You will enjoy thread veins and larger veins removal gold standard treatment for removing spider veins and unsightly leg veins microsclerotherapy is considered the gold standard treatment for leg thread veins and spider veins it is the technique of injecting thread or spider veins with a special substance known as a sclerosant that causes swelling in the veins wall if the vein is small enough the swelling will destroy the vein over several weeks making it much less noticeable o