
Dr. Yoongon Ryu
Flagship clinic · KOL for leading lifting & regenerative devices

Ultherapy uses micro-focused ultrasound (MFU/MFU-V) to stimulate collagen, so results typically last 12 to 18 months per session, with firming building gradually over 2 to 3 months.
Ultherapy results in Korea typically last 12 to 18 months per session, since micro-focused ultrasound (MFU-V) builds new collagen over 2 to 3 months rather than instantly. Because natural ageing continues, most people plan a maintenance session about once a year. At Reberry Clinic in Seoul, longevity and upkeep are planned in English at consultation.
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Ultherapy results in Korea usually last around 12 to 18 months from a single session, though the exact duration varies with age, baseline skin laxity, and how quickly your body forms collagen. The treatment uses micro-focused ultrasound (MFU/MFU-V) to deliver precise thermal points to the SMAS layer and deep dermis, heating tissue to roughly 60 to 70°C to trigger new collagen over the following months. That collagen is what firms and lifts the skin, so the effect appears gradually and then holds for a year or more before natural ageing softens it.
It helps to think of Ultherapy as a reset rather than a one-time fix. The lift you gain does not vanish suddenly at 12 months; instead, ongoing ageing and lifestyle factors slowly reduce the visible firmness, which is why many people schedule maintenance about once a year. Skin quality, sun exposure, weight changes, and smoking all influence how long the result stays visible.
At Reberry Clinic in Seoul, longevity is planned honestly. The clinic’s doctors assess your skin, explain a realistic 12 to 18 month expectation, and discuss when a maintenance session makes sense, all in English. International patients are supported across our Seoul locations (Gangnam, Myeongdong), so you can plan timing around your travel to Korea.

Ultherapy longevity is driven by how micro-focused ultrasound (MFU/MFU-V) works: the device uses visualization to image tissue layers on a DEEPSEE-style display, then delivers focused ultrasound energy at set depths, commonly 4.5, 3.0, and 1.5 mm, to create controlled thermal coagulation points at about 60 to 70°C. These tiny points sit below the surface in the SMAS and dermis, sparing the top layer of skin. The heat denatures existing collagen and triggers a wound-healing cascade, so over the next 2 to 3 months fibroblasts lay down new collagen and elastin. That fresh collagen is what tightens and subtly lifts the skin, and its gradual remodeling is exactly why the result lasts a year or more rather than fading in weeks. Because the depth, line density, and coverage all shape how much collagen is produced, an experienced doctor plans the treatment to your laxity, which is a bigger factor in longevity than any single marketing claim.
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Micro-focused ultrasound creates thermal coagulation points at about 60 to 70°C at 3 preset depths, sparing the skin surface.
Within the first 2 weeks, the controlled thermal injury starts a wound-healing response in the SMAS and dermis.
Over 2 to 3 months, fibroblasts lay down new collagen and elastin, so firming and lift become visible.
Most people see the fullest effect by around 3 to 6 months, when collagen remodeling matures.
The result typically holds for 12 to 18 months before natural ageing gradually softens the visible lift.
A maintenance session about once a year refreshes collagen and helps sustain firmer skin over time.

See representative outcomes from Reberry Clinic. Results build gradually and vary by individual; your plan is assessed at consultation.


The clinic’s doctors assess your skin laxity, confirm candidacy, and explain a realistic 12 to 18 month expectation in English at Reberry Clinic in Seoul.
A full-face session usually takes about 45 to 90 minutes depending on the number of lines mapped for your plan.
Most patients need just 1 session, with a maintenance session considered around once a year.
Firming builds gradually over 2 to 3 months and peaks by about 3 to 6 months as collagen matures.
Results commonly last 12 to 18 months, individual-dependent, and daily sun protection helps sustain firmer skin for longer.



Ultherapy results typically last 12 to 18 months per session, because micro-focused ultrasound builds new collagen over 2 to 3 months rather than instantly. Duration varies with age and skin laxity. Most people plan a maintenance session about once a year, which the clinic’s doctors explain on our Ultherapy Prime page.
Firming builds gradually over 2 to 3 months as new collagen forms, and the fullest effect appears by around 3 to 6 months. Some patients notice early tightening sooner, but the result is judged at follow-up rather than on the day. Your doctor reviews progress so expectations stay realistic throughout.
A maintenance session about once a year helps sustain firmer skin over time, since it refreshes collagen before natural ageing softens the earlier result. It is a top-up rather than a permanent lock, so a good clinic plans upkeep honestly. You can review the approach on our Ultherapy Prime page.
Ultherapy is not a one-time fix because natural ageing, sun exposure, and lifestyle continue after treatment, gradually reducing the visible lift. The collagen it builds firms the skin for 12 to 18 months, then softens over time. This is why maintenance about once a year is planned rather than a single permanent result.
Longevity depends on your collagen response, correct treatment depth, and aftercare. Daily sun protection, stable weight, and avoiding smoking all help sustain firmness. An experienced doctor who matches depth and line density to your laxity also improves durability, which the clinic’s doctors plan at consultation on our Ultherapy Prime page.
Most patients feel warm, tingling pulses as the energy is delivered to set depths, and comfort is managed throughout the session. Sensation varies by area and depth, and any tenderness usually settles quickly. Your doctor adjusts settings for comfort and explains what to expect before starting, so there are no surprises.
There is little to no downtime for most patients, so you can usually return to daily activities the same day. Temporary redness, mild swelling, or tenderness can occur and typically fades within days. A downtime-light alternative like Sofwave can be discussed if you prefer a gentler option.
Ultherapy results last around 12 to 18 months, while Thermage FLX often lasts around 1 to 2 years because radiofrequency tightens more broadly. Ultherapy targets deeper lifting via ultrasound; Thermage smooths and tightens. Your doctor advises which fits your skin, goal, and travel timing at consultation.
Most patients need just 1 session to see firming build over 2 to 3 months, with a maintenance session considered about once a year. Very lax skin may benefit from a tailored plan. Your doctor confirms the number after assessing your laxity, since more sessions are not automatically better for everyone.
Yes, Ultherapy is often combined with skin boosters or radiofrequency for a fuller result, sequenced so the skin is not over-stressed. For example, Rejuran Healer can improve skin quality alongside lifting. The clinic’s doctors explain the combined plan and cost transparently before you decide.
Most adults with mild to moderate facial or neck laxity are suitable, especially those wanting non-surgical lifting without downtime. Very severe sagging may be better addressed with surgical options. A consultation confirms candidacy and realistic longevity, which the clinic’s doctors explain clearly during your in-person assessment.
Ultherapy is widely performed and generally considered safe when a trained doctor matches depth and settings to your skin. Temporary redness, swelling, or tenderness can occur and usually settles quickly. A consultation reviews your history to reduce risks, and the clinic’s doctors explain realistic expectations before your plan begins.
Ultherapy cost depends on the number of lines and areas treated, so it is set per person rather than a fixed figure. After assessing your laxity, the clinic’s doctors confirm your cost on our Ultherapy Prime page. A full-face plan differs from a targeted area, and value tracks the honesty of the plan.
Yes, aftercare influences longevity because daily sun protection, gentle skincare, and stable weight all help preserve the new collagen. Avoiding heavy sun exposure and smoking supports firmer skin for longer. Your doctor gives simple aftercare guidance so the 12 to 18 month result holds as well as possible.
For Ultherapy, 2 to 3 days in Seoul is comfortable, allowing a consultation, the session, and a short review. Because results build over months, many international patients complete treatment in one trip and see firming after returning home. Our English-speaking Seoul team helps coordinate timing and cost.
Yes, flying within a day or so is generally fine, since Ultherapy is non-invasive with little downtime. Cabin air is drying, so keep skin moisturised and protect the treated area from strong sun. Your doctor gives travel-friendly aftercare so collagen firming continues smoothly while you head home.
International patients usually complete Ultherapy in one visit, and the clinic offers remote check-ins in English so your firming progress and yearly maintenance timing stay on track. You can plan a maintenance session on a later trip when the 12 to 18 month result begins to soften. Your treatment notes are kept on file for continuity.
| Ultherapy Prime (MFU-V) | Thermage FLX (RF) | Sofwave (ultrasound) | |
|---|---|---|---|
| Energy / mechanism | Micro-focused ultrasound to the SMAS and deep dermis | Monopolar radiofrequency heating the dermis broadly | Synchronous ultrasound parallel beam in the mid-dermis |
| Best for | Deeper lifting of lax face, neck, and brow | Overall skin tightening and smoothing | Milder mid-dermal tightening with comfort |
| Results timeline | Gradual over 2 to 3 months | Gradual over about 2 to 6 months | Gradual over about 3 months |
| Longevity | About 12 to 18 months per session | Often around 12 to 24 months | Around 12 months, individual-dependent |
| Pain / comfort | Warm, tingling pulses managed during the session | Warmth with vibration and cooling for comfort | Warm sensation, generally well tolerated |
| Downtime | Little to no downtime for most patients | Little to no downtime for most patients | Little to no downtime for most patients |
| Sessions | Often 1, with maintenance about once a year | Often 1, repeated after 1 to 2 years | Often 1 to a short series by goal |
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