An FDA-approved solution called Sotradecol® and/or Polidocanol is injected into the vein through a microneedle to induce an inflammatory reaction, which causes the vein to seal shut and gradually shrink away and disappear. Once the vein is sealed, blood is forced into healthier veins. Sotradecol® and Polidocanol give much better results and are far less painful than the traditional hypertonic saline injections.