Cynosure advanced laser technology is used to target and destroy the blood vessels responsible for veins, causing them to disappear. The light energy from the laser is absorbed by the blood within the vein being targeted, causing the vein to collapse, while leaving the surrounding skin unharmed. Laser therapy avoids the pain and downtime of surgical treatment. Lasers are used for a range of treatments, from tiny spider veins, to more noticeable veins, which often appear on the face or legs. This therapy is also used to treat rocacea.