About two months after treatment, you may notice that your legs feel lighter. You will likely find that any large, lumpy veins that you had, slowly start to fade within two to six months after sclerotherapy. Your smaller veins will likely begin to disappear over the next six months. It’s important to note that your legs may change in color and look worse before they look better. However, most patients find the results to be worth this process of fading the veins.