Sclerotherapy is a well-proven treatment to eliminate spider and reticular veins. Spider veins and reticular veins are those deeper blue/green lines that often feed purple areas, generally 1-2mm in size.
It has been in use since the 1920's, and has emerged as its own specialty in the US since the 1980's. It involves the injections of small amounts of solutions to irritate the vein walls and achieve the ultimate closure of the vein.
The extent of your treatment, and how many treatment sessions you’d require, vary on your unique situation.
Spider vein injections are considered cosmetic and are not covered by insurance.