The Effectiveness of Sclerotherapy
In general, spider veins can take up to 3 months to respond. However, new veins may appear requiring further treatment. If needed, you may return for injections.
Studies have shown that as many as 50% to 80% of injected veins may be eliminated with each session of sclerotherapy.
Less than 10% of the people who have sclerotherapy do not respond to the injections at all. In these instances, different solutions can be tried. Although this procedure works for most patients, there are no guarantees for success.