A medical treatment that involves using a fine needle to inject a chemical agent called Asclera into varicose veins or spider veins of the feet, ankles, or legs. This causes the vein to collapse and eventually fade over time. The treatment can take 15 minutes to an hour, depending on severity. After the treatment, you will be required to wear compression socks for the first 3-5 days. There is little-to-no downtime after treatment.