Sclerotherapy is used for the treatment of leg veins and is a relatively simple procedure performed by injecting saline solution into the vein with a very fine needle, causing the vein to collapse. The collapsed vein is then broken down by the body over the next couple of months. After the procedure, the leg is wrapped with an elastic wrap that must be worn for at least 24 hours. Compression hose are recommended for 2 weeks following the procedure. Most patients can expect a 60-90% improvement.