Sclerotherapy eliminates varicose veins and "spider veins" via injection of a solution directly into the vein.
Sclerotherapy involves an injection of a solution (such as sodium chloride, a salt solution, or sotradecol, a detergent directly into the vein. The solution irritates the lining of the blood vessel, causing it to swell and stick together, and the blood to clot. Over time, the vessel turns into scar tissue that fades from view. Sclerotherapy is a well-proven procedure and has been in use since the 1930's.