For small and large face and leg veins, powerful medical lasers clear veins quickly and effectively. Vessels will either disappear immediately or darken a little and then fade away over a week or two.

For larger spider veins, a number of tiny injections of a substance called sodium tetradecyl sulphate into the vessels close off the veins over time. Compression stockings must be worn after sclerotherapy for 4 weeks for best results.