Treatment for visible veins such as thread/spider veins

Sclerotherapy is a medical procedure that has been used for over 80 years. It is used to remove varicose veins and spider veins. The relatively straight-forward procedure involves an injection of a salt solution containing prescribed drugs, 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.