It involves injecting a saline solution into the veins, causing the lining of the blood vessel to die. It's safe because a natural solution is injected. Some doctors may choose to inject a synthetic detergent, which is stronger. In some cases, several injections are required. The procedure feels like a tiny needle stick and when the saline solution travels into the vein, there is a brief mild stinging sensation.
Laser treatment is also available.
In this procedure, intense light is directed to the veins to eliminate them permanently. Lasers are especially suited to treating spider veins that are so small a needle can't be used to inject the affected vein. The treatments are not usually covered by insurance because medical health plans typically pay only for what's medically necessary. Laser treatments typically cost a little more. There is no proven strategy for preventing spider veins, but doctors offer several suggestions such as wearing support hose, which may prevent some unwanted blood vessels from developing in some people.