Which One Is Right For You? – Beautiful With Brains

Last Updated on February 11, 2026 by Giorgia Guazzarotti

When you’re dealing with varicose veins or spider veins that make you think twice before wearing shorts or that ache after a long day on your feet, you want a solution that actually works, not just temporarily, but for real. The whole varithena vs sclerotherapy debate matters because these are two of the biggest treatment options for getting rid of unwanted veins, but they work totally differently and give you different results depending on what’s going on with your legs.

If you’ve been trying to figure out which is the best treatment for your vein, I’ve got you covered. In this article, you’ll find out what the actual studies say about how these treatments stack up, how many sessions you’ll really need, what side effects happen with each one, and which treatment gets better long-term results for whatever type of problematic veins you’re dealing with.

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Varithena VS Sclerotherapy: What They Are

Sclerotherapy has been around forever. Your vein specialist sticks a small needle into the affected vein and injects a solution that irritates the vein wall, making it collapse and seal shut. This can be liquid or foam that doctors mix themselves in the office by shaking sclerosant with air. Blood flow redirects to healthier veins while your body reabsorbs the dead vessel.

Varithena treatment is also foam, but it’s an FDA-approved treatment using specially formulated polidocanol endovenous microfoam that comes pre-manufactured instead of hand-mixed. The foam goes in through a catheter with ultrasound guidance so it can treat longer stretches of vein. Research shows the bubble size and stability are way more consistent than doctor-mixed foams, which matters for how well it contacts the vein wall.

Benefits Of These Varicose Vein Treatments

Sclerotherapy lets you tackle spider veins and small varicose veins without any traditional surgery or heat. Because it just uses a tiny needle, there’s no incision, no scarring, and you literally walk out and go about your day. The liquid or foam sclerosant works by chemically irritating the vein wall, which means it can handle veins that are too small or twisty for laser or heat treatments to reach. You can treat a bunch of different veins across your legs in the same session, which is huge if you’ve got scattered spider veins. It’s also been used for decades, so doctors really know how to do it well and what to expect. For cosmetic concerns like those web-like veins on your thighs or ankles, sclerotherapy gets rid of them without the cost or complexity of fancier treatments.

Varithena solves a different problem: it’s designed for those bigger, deeper varicose veins that are actually making you miserable with symptoms. The specialized microfoam can fill and treat the entire greater saphenous vein or accessory saphenous veins from one access point, which traditional sclerotherapy can’t really do effectively. Research shows the consistent bubble size means better contact with the vein wall and more complete treatment. Because it treats the whole vein system in one session, you’re not coming back repeatedly over months. For people dealing with chronic venous insufficiency where blood pools in bad veins and causes daily discomfort, Varithena addresses the root problem rather than just surface veins. The catheter delivery with ultrasound guidance means your vein specialist can see exactly where the foam is going and treat veins deep under the skin that you can’t even see but are causing your symptoms.

Varithena VS Sclerotherapy: Most Common Side Effects

Sclerotherapy:

• Bruising at injection sites (basically guaranteed)
• Tender or itchy treated areas for a few days
• Temporary dark spots along the treated vein that can last months
• Inflammation (phlebitis) of the vein-less common, needs anti-inflammatories
• Deep vein thrombosis – rare but possible. 
• Neurological symptoms from nitrogen bubbles are a concern with room-air mixed foams

Varithena:

• Leg pain or discomfort (most common, usually mild)
• Bruising and limb soreness

The difference? Varithena uses less than 0.8% nitrogen with oxygen and carbon dioxide that your body naturally processes through breathing, while traditional foams mixed with room air have more nitrogen that sticks around longer. Both require compression stockings after – about a week for sclerotherapy, two weeks for Varithena. Most people return to normal activities the next day.

Related: Does Sclerotherapy Hurt?

How Many Treatments You Need?

Sclerotherapy:

Varithe​na:

Built for single session treatment. The VANISH-1 and VANISH-2 trials with 511 patients showed:

• 86% achieved successful response with one treatment
• Only 3.4% of truncal veins needed retreatment
• Results lasted at one year with continued improvements in varicose vein symptoms

For visible varicosities of the great saphenous vein causing leg pain and heaviness, one session versus multiple treatments over months is a game changer.

Which Minimally Invasive Treatment Works Better?

• For Spider Veins: Sclerotherapy wins. These tiny blood vessels respond great to liquid or basic foam medication. No need for ultrasound guidance or catheters. Way more practical and cheaper.
• For Small Varicose Veins (under 3mm): Sclerotherapy, especially foam, works well. These are too small for heat treatments like endovenous laser ablation but big enough that foam beats liquid alone.
• For Large Varicose Veins: Varithena dominates here. It performs equally to endovenous thermal ablation for vein closure and has  almost 3x better odds of closing veins compared to doctor-mixed foam.

Recovery and Getting B​ack to Life

Sclerotherapy: Most people bounce back incredibly quickly. There’s minimal downtime.  You can resume your usual day-to-day activities almost immediately after a session, which usually takes less than half an hour. You’ll need to wear compression stockings between treatments to help your veins heal and improve results, but aside from that, life keeps moving. Just take it easy with really intense workouts or heavy lifting for a few days, and your body will thank you.

Varithena: Recovery here is just as manageable. Most people are back to their normal routines the very next day. You’ll wear compression socks for about two weeks, and it’s best to hold off on hot baths or very strenuous exercise for the first little while. The procedure itself takes a bit longer than sclerotherapy because a catheter is used, but it’s still an outpatient treatment – you’re in and out on the same day.

Who’s A Good Candidate For Each Treatment?

Sclerotherapy works for pretty much anyone with spider veins or small varicose veins who isn’t pregnant and doesn’t have active deep vein thrombosis. Your medical history matters – your vein specialist will check.

Varithena is specifically for people with problematic veins in the greater saphenous vein system causing symptoms – leg pain, heaviness, swelling, visible bulging. If you’ve got chronic venous insufficiency affecting your quality of life, you’re likely a good candidate.

The Bottom Line

For spider veins and small stuff, traditional sclerotherapy is proven, effective, and practical. For larger varicose veins causing real symptoms, Varithena produces more consistent results than doctor-mixed foam and matches thermal ablation methods in effectiveness – all in potentially one session instead of many. The choice depends on what veins you’re dealing with, what symptoms you have, and what your vein specialist recommends based on ultrasound-guided assessment of your specific vein condition. Talk to someone who offers multiple treatment options and can honestly tell you which effective treatments fit your situation best.