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Spider veins (telangiectasias) are small red, blue, or purple vessels often seen on the legs. Sclerotherapy is a first-line, minimally invasive option for many cosmetic spider and small reticular veins. It is not the same as surgery for large varicose veins—and not every pattern is treated the same way.
Reviewed 2026-08-04. Educational information only.

A fine needle delivers a liquid (or, in some practices, foam) sclerosant into the target vessel. The solution irritates the vessel lining so it collapses; over weeks the body reabsorbs the treated vein and the surface appearance often softens. Treated veins do not simply “pop” away the same day.
More detail — tap to expand
Major clinic education points: wear compression as directed (often continuous for the first day or two, then daytime wear for up to one to two weeks—your sheet is the rule), walk regularly, avoid hot tubs/saunas briefly, and limit strenuous lower-body workouts for a short window. Bruising, itching, or temporary darkening of treated lines can occur as vessels resolve.
Small spider veins may show improvement over about three to six weeks; clusters often need more than one visit. A common educational frame is multiple sessions spaced roughly four to six weeks apart. New vessels can appear over time with genetics, hormones, or standing work—maintenance is sometimes discussed.
Bulging varicose veins, significant leg swelling, skin ulcer history, or clotting concerns may need vascular evaluation beyond cosmetic sclerotherapy. We are clear when referral or further assessment is the safer next step.
How it works
Examine vessels, history, and whether sclerotherapy is appropriate—or if referral is wiser.
Targeted injections with compression and activity guidance afterward.
Review fading over weeks; plan additional sessions if indicated.
FAQs
Yes. Kairos offers sclerotherapy for spider veins when clinically appropriate after evaluation.
Most people feel brief pinches or stinging at injection sites. Comfort varies with vessel number and location.
Compression is commonly recommended after sclerotherapy to support treated veins and reduce swelling. Duration is personalized—follow your aftercare instructions.
Many people need more than one session spaced several weeks apart. Exact counts depend on vessel load and response—not a fixed package promise.
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