It is a minimally invasive procedure performed by a healthcare provider to treat uncomplicated spider veins and uncomplicated reticular veins. It involves an injection of a solution (sclerosis agent) into the affected veins. It has been used since 1939. A typical sclerotherapy session lasts 15 to 45 minutes. More than one treatment may be necessary to clinically treat superficial veins 3mm or less in diameter. 2-3 treatments separated 4-6 weeks are usually needed for desired results. Consult + Treatment + Compressions.