Eliminating the vein will never retain blood from flowing while in the leg. That's since veins further from the leg get care on the larger sized amounts of blood. Prior to sclerotherapy, you might have an ultrasound take a look at of the legs if the veins are triggering symptoms. https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-comprehensive-advice-for-optimal-results/