Sclerotherapy is a vein treatment procedure used to chemically ablate superficial veins. This procedure uses tiny needles to inject a liquid or foam chemical agent into visible surface veins. The injected chemical solution causes the treated veins to shrink and collapse over time. In most cases, multiple treatment sessions are needed. Side effects are rare, with the most common being dark staining. Following a sclerotherapy procedure, compression stockings are worn to prevent the treated veins from carrying blood. Approximately 70% of veins treated by sclerotherapy will disappear with each treatment, unless their underlying cause is not treated. This is why Vein Specialists at Hogue Vein Institute recommend a non-invasive evaluation first be done to evaluate for underlying venous disease before cosmetic sclerotherapy is performed. Despite all the advancements in laser technology, sclerotherapy still remains the overwhelming choice of patients and their doctors for spider vein treatment. Why, because sclerotherapy is more effective and less painful than any other treatment available for spider veins. Complications are minimal in the hands of an experienced Vein Specialist.