Patients can expect to feel like they have a sunburn for a few hours after the treatment, and can return to their normal activities in 24 hours. You may experience mild swelling and possibly some bruising that will last about 2 weeks. Avoiding the sun is very important after a laser treatment to remove spider veins – as exposure to the sun can result in darkening of the skin in the area treated. We recommend keeping the area covered for several weeks – or wearing a high-SPF, zinc or titanium-based sunscreen. The veins will not disappear immediately. They will initially darken as they collapse, and then fade slowly over several weeks as they are gradually resorbed by the body. Do not expect to see your final results for 8-12 weeks after your treatments are finished.