Gangnam
Dr. Yoon-Gon Ryu
Aesthetic Medicine Specialist
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Reticular veins are 1-3mm blue-green feeder veins; sequential sclerotherapy can clear over 90% of superficial leg vessels across a planned series of sessions.
Reticular vein treatment in Gangnam, Seoul fades the 1-3mm blue-green feeder veins beneath the skin using sclerotherapy, a 1064nm Nd:YAG laser, or a combined cryo-laser approach across a few spaced sessions. Because these veins often feed spider veins, a doctor-led plan treats them in the right order. At our Gangnam (Seoul) location, Dr. Yoongon Ryu assesses each case.
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Reticular veins are dilated subdermal veins, typically 1 to 3mm across, that appear as flat blue or green lines just beneath the skin, most often on the legs. They sit slightly deeper than fine red spider veins (telangiectasias) and frequently act as feeder veins, supplying and sustaining the smaller surface vessels. Treating them is both a cosmetic and a structural step, because clearing a feeder vein can improve nearby spider veins too.
The main approaches are sclerotherapy, laser, and combinations of the two. Sclerotherapy injects a solution that irritates the vein lining so the vessel collapses and is gradually reabsorbed; when done sequentially from deeper and larger to smaller vessels, it can clear the large majority of superficial leg veins. A long-pulsed 1064nm Nd:YAG laser heats and seals vessels transdermally, useful for veins too small to cannulate or as a finishing tool. A combined cryo-laser and cryo-sclerotherapy method (CLaCS) pairs laser with injection under skin cooling.
At Reberry Clinic, reticular vein care is consultation-led with English-language support. The clinic’s doctors map which veins feed which, then sequence treatment for cleaner results. International patients are seen at our Gangnam (Seoul) location with Dr. Yoongon Ryu, about 2 minutes from Gangnam Station exit 10.
Sclerotherapy remains the mainstay for reticular veins: a fine needle injects a sclerosant (such as polidocanol, sometimes as a foam) into the vein, irritating its inner lining so the walls seal shut and the vessel is reabsorbed over weeks. Because reticular veins feed surface spider veins, doctors treat from deeper and larger vessels down to smaller ones, which is why sequencing matters and a single injection rarely finishes the job. The long-pulsed 1064nm Nd:YAG laser offers a needle-free option: it penetrates to the depth of subdermal veins and delivers heat that coagulates the vessel, making it suited to veins too small to inject or to clearing residual redness after sclerotherapy. The combined CLaCS technique fires a transdermal laser and then injects sclerotherapy while a cooling device blows very cold air onto the skin, improving comfort and cosmetic outcome. Around delicate areas and for deeper tones, conservative laser settings reduce the risk of pigment change. The right protocol depends on vein size, depth, colour, and how the veins connect, which is why assessment precedes treatment and most patients complete a short planned series rather than a one-off.
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The doctor identifies which of the 1-3mm reticular veins feed nearby spider veins, so treatment follows the right sequence rather than 1 random vessel at a time.
Based on vein size and depth, the plan uses sclerotherapy, a 1064nm laser, or a combined approach, since no single tool suits every vessel.
Sequential sclerotherapy from deeper feeder veins down to fine surface veins can clear over 90% of superficial leg vessels across a series.
Sessions are usually spaced several weeks apart so veins reabsorb and the skin settles before the next 1 is treated.
Compression and walking are often advised for the first days, and most patients return to routine activity within 1 day.
See representative outcomes from Reberry Clinic. Results build gradually and vary by individual; your plan is assessed at consultation.
The clinic’s doctors map which veins feed which, assess vein size and depth, and explain the modality plan and realistic outcomes in English.
After assessment, a session typically takes about 20 to 40 minutes depending on how many veins are treated.
Treatment is staged, with sessions spaced several weeks apart, so the full plan runs across a series rather than a single visit.
Veins fade gradually over weeks as they reabsorb, and your doctor reviews progress before treating the next set of vessels.
Compression, walking, and sun protection support recovery; because new veins can form over time, occasional maintenance may be planned.
Reticular veins are 1-3mm blue-green veins just beneath the skin, often feeding surface spider veins. They are treated with sclerotherapy, a 1064nm Nd:YAG laser, or a combined approach, matched to vein size and depth. You can learn more about our approach on the laser treatment page.
Neither is universally better; the choice depends on your veins. Sclerotherapy is the mainstay for feeder veins large enough to inject, while a 1064nm laser suits vessels too small to cannulate or clears residual redness. Your doctor often combines both, treating from larger feeder veins down to smaller surface veins for cleaner results.
Most patients need a planned series rather than a single visit, because sequential treatment from larger to smaller vessels can clear over 90% of superficial leg veins. Sessions are usually spaced several weeks apart so veins reabsorb between visits. Your doctor estimates the likely number after mapping how your veins connect.
Discomfort is generally mild. Sclerotherapy causes brief stinging at each injection site, and laser feels like a snapping heat sensation eased by cooling. Sessions are short, and the clinic’s doctors check comfort throughout. See related care on our dark spot removal page for how we manage sensitive treatments.
Downtime is minimal for most patients. Mild redness, bruising, or swelling at treated sites is common and settles over days to a couple of weeks. Compression stockings and walking are often advised after sclerotherapy, and most people return to normal activity within about 1 day while avoiding intense exercise briefly.
Veins fade gradually over several weeks as the body reabsorbs the collapsed vessels, not immediately after 1 session. Larger feeder veins are treated first, which can improve nearby spider veins too. Your doctor reviews progress before each subsequent session so the plan stays matched to how your veins respond.
Treated reticular veins that reabsorb typically do not return, but new veins can develop over time due to genetics, hormones, or lifestyle, so it is not a one-time fix. Occasional maintenance sessions keep results clean. Your doctor explains this honestly so expectations are realistic rather than a promise of flawless permanent clearance.
Yes, when conservative settings are used to reduce the risk of pigment change, laser vein treatment can be performed across a range of skin tones. Your doctor accounts for your skin type when selecting wavelength and energy. Sun protection before and after treatment further lowers pigment risk. See our skin care routine guidance.
CLaCS stands for cryo-laser and cryo-sclerotherapy, a combined approach that fires a transdermal laser and then injects sclerotherapy while very cold air cools the skin. A 2024 randomized trial reported it showed strong efficacy and safety versus sclerotherapy alone for reticular veins and telangiectasias, with good cosmetic results. Your doctor decides if it suits your vein pattern.
Yes, because reticular veins often act as feeder veins that sustain surface spider veins, treating them first can improve the smaller vessels above. This is why sequencing from deeper feeder veins to fine surface veins matters. Your doctor maps these connections at consultation so the plan addresses the underlying source, not just the visible surface.
The main considerations are temporary bruising, redness, swelling, and, less commonly, pigment changes or small clots at treated sites. Sequential, doctor-led technique and appropriate settings reduce these. Serious complications are uncommon when contraindications like clotting disorders are screened first, which is why medical assessment before treatment is important for safety.
Most healthy adults with visible 1-3mm reticular veins are suitable, provided they have no untreated clotting disorder and are not pregnant. A consultation maps your veins and confirms the right modality for size, depth, and skin tone. Those with a history of deep vein thrombosis need careful medical review before proceeding.
Wear compression as advised, walk regularly, avoid intense exercise and hot baths briefly, and use daily sun protection over treated areas to reduce pigment risk. Staying hydrated and moving helps circulation. A supportive skin care routine protects treated skin between sessions and supports even healing.
International patients are seen at our Gangnam (Seoul) location, where Dr. Yoongon Ryu assesses and treats reticular veins with English-language support. Gangnam is about 2 minutes from Gangnam Station exit 10. You can begin on our laser treatment page and message us to plan a consultation.
For a first session, 2 to 3 days is comfortable, covering a consultation, the treatment, and a short review. Because care is staged over a series, many international patients complete one session per trip or time visits around the several-week spacing. Our English-speaking team helps coordinate timing around your travel.
Discuss flying with your doctor, as long-haul travel soon after leg-vein treatment carries a small clot-related consideration; short trips are usually fine with compression and movement. Your doctor advises based on your history and the extent treated. Staying hydrated, walking during the flight, and wearing compression stockings are commonly recommended.
International patients can complete sessions across return trips timed to the several-week spacing, with remote check-ins in English between visits. Your vein mapping and treatment notes are kept on file for continuity. You can also maintain supportive skin care and healthy leg habits at home between sessions.
| Sclerotherapy | 1064nm Nd:YAG Laser | Combined (CLaCS) | |
|---|---|---|---|
| Mechanism | Injected sclerosant irritates and seals the vein | Transdermal heat coagulates the vessel needle-free | Laser then injection under skin cooling |
| Best for | Reticular feeder veins large enough to inject | Veins too small to cannulate or residual redness | Mixed reticular veins and telangiectasias |
| Pain / comfort | Brief stinging at injection sites | Snapping heat sensation, cooling helps | Cooling air improves comfort during both steps |
| Downtime | Minimal; compression often advised | Minimal; mild redness or swelling | Minimal to mild depending on extent |
| Results timeline | Veins fade over weeks as they reabsorb | Gradual clearing over weeks | Progressive fading, often good cosmesis |
| Sessions | A planned series, larger to smaller veins | Often several spaced sessions | Series tailored to vein pattern |
| Cost factors | Depends on number of veins and sessions | Depends on area and sessions | Depends on combined-protocol staging |
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