sclerotherapy Yvonne Yan Duan FNP performing sclerotherapy in her clinic today. She has been performing this procedure since 2008. Sclerotherapy is often recommended the first choice for cosmetic spider vein treatment. It is safe and effective in the hands of well trained, skilled, and experienced provider. Asclera is a commonly used agent. Multiple treatments are most likely needed to clean up one area. Compression hose wearing immediately after this procedure is used to improve treatment outcomes. For complimentary consultation or treatment appointments, call 971-470-3186.