Ultherapy vs Thermage vs Sofwave vs HIFU vs Thread Lift in Seoul: Which One, How Much, and What to Expect
The short answer
They are not interchangeable, and the right one depends on what is sagging and where the laxity sits, not on which device is newest.
| Ultherapy (Prime) | Thermage FLX | Sofwave | Korean HIFU (Shurink Universe, Linearz) | Thread lift (PDO / PCL) | |
|---|---|---|---|---|---|
| Energy | Micro-focused ultrasound | Monopolar radiofrequency | Synchronous ultrasound (1.5 mm) | Micro-focused ultrasound | Mechanical, absorbable threads |
| Target depth | 1.5 / 3.0 / 4.5 mm (SMAS) | Dermis to upper fat, bulk heating | Mid-dermis only | 1.5 / 3.0 / 4.5 mm | Subcutaneous, physical repositioning |
| Best for | Jawline, jowls, brow, neck: deep laxity | Skin texture, fine crepiness, eyelid skin, early laxity | Fine lines, mild laxity, thin skin, people who cannot tolerate pain | Budget version of Ultherapy; same depths, lower energy | Visible immediate lift of cheeks and jawline in moderate sagging |
| Pain (relative; varies by patient, area, energy) | Most painful (6–8 without sedation) | Moderate (3–5) | Mild (2–4) | Moderate (4–6) | 3–5 during, sore for days |
| Downtime | None to mild swelling 1–3 days | None | None | None | Swelling, bruising 1–2 weeks; pulling sensation 2–4 weeks |
| When you see results | 2–3 months, peak at 6 | 2–6 months | 3 months | 1–3 months | Immediately, settles over 1 month |
| How long it lasts | 12–18 months | 12–24 months | 12 months | 6–12 months | 6–18 months depending on thread |
| Typical full-face dose | 300–600 shots | 600–900 shots | 1 session | 300–600 shots | 4–14 threads |
| Seoul first-visit price (Oct 2026) | 300 shots ₩600k–1.09M | 600 shots ₩1.19M–2.2M | 1 session ₩539k–1.2M | 300 shots roughly ₩150k–400k | ₩11k–219k per thread |
Prices from 60+ published Seoul clinic event prices, VAT included; see the price page for method. Pain varies a lot by patient, area and energy setting; read the scores as a relative ranking between devices, not a promise. Duration figures are the generally reported ranges.
How does each one actually work?
Ultherapy delivers micro-focused ultrasound to precise depths, including the SMAS layer at 4.5 mm that surgeons tighten in a facelift. Each "shot" creates a line of tiny thermal coagulation points; collagen remodels around them over 2–3 months. It is the only non-surgical device with imaging, so the operator sees the layer being treated. The original rater-blinded study (Alam et al., J Am Acad Dermatol, 2010) showed brow lift in the majority of patients at 90 days; later Korean cohorts reported similar results in Asian skin with adjusted energy settings.
Thermage FLX heats a broad volume of dermis and upper fat with monopolar radiofrequency while cooling the surface. It does not reach the SMAS. Its strength is skin quality: fine crepe, pores, mild laxity, and the eyelids (Eye Thermage uses a small tip). Periorbital tightening was shown in the first multicenter study (Fitzpatrick et al., Lasers Surg Med, 2003), and the FLX generation reduced pain with vibration and a larger tip.
Sofwave uses synchronous ultrasound beams to heat a band at 1.5 mm, mid-dermis. It deliberately stays shallow, which is why it is nearly painless and safe over thin areas, and why it does not lift heavy tissue. FDA-cleared for lifting of the brow, submental area and neck. It is a texture-and-fine-line device that is often sold in Korea as a lifting device; expect skin improvement, not a jawline change.
Korean HIFU (Shurink Universe, Linearz, Ultraformer and others) is the same physics as Ultherapy at lower energy per shot and lower cost per shot, without imaging. Results are real but shorter-lived; Korean patients typically repeat every 6–12 months. It is a sensible first device for mild laxity and for people who want to test their response before paying for Ultherapy.
Thread lifts place barbed absorbable threads (PDO, PCL or PLLA) under the skin to physically reposition tissue. The lift is visible on the day. The thread dissolves over 6–18 months and leaves some collagen behind. A Korean outcomes series (Suh et al., Dermatol Surg, 2015) reported good satisfaction with a bruising-and-swelling period of about two weeks and occasional dimpling or asymmetry that resolved.
Which one for which problem?
| Your concern | Usual first choice | Why not the others |
|---|---|---|
| Jowls, blurred jawline, double chin starting | Ultherapy (or HIFU if budget) | Thermage and Sofwave do not reach the layer that is sagging |
| Skin looks thin, crepey, tired; mild laxity | Thermage FLX or Sofwave | Ultherapy is overkill and more painful for a surface problem |
| Upper and lower eyelid skin laxity | Eye Thermage | Ultrasound devices are limited near the globe |
| Cheeks dropped, want visible lift now | Thread lift, often combined with Ultherapy or HIFU later | Energy devices take 2–3 months and lift less |
| Pain-averse, thin skin, first time | Sofwave or Shurink | Ultherapy without sedation is a hard first experience |
| Significant laxity in the 50s and beyond | Honest answer: these devices will disappoint; discuss surgery | Non-surgical devices cannot lift what surgery lifts |
"Ulthermage": why Korean clinics combine them
You will see packages called 울써마지 (Ultherapy + Thermage) everywhere in Gangnam. The logic is layered: Ultherapy for the SMAS, Thermage for the dermis. The literature on same-day combination is thin, and the main practical question is pain and cost. A common Korean approach is to stage them a few weeks apart. If a package is offered, ask which device is being done first and at what shot count for each; a bundle price is only comparable when the shot count for each device is written down.
How many shots do I actually need?
Shot counts are where quotes become incomparable.
- Ultherapy: 100 shots is a trial (one area, usually the jawline on one side or the brow). Lower face is typically 300; full face 400–600; face and neck 600–800. 100 shots cannot cover a full face.
- Thermage FLX: 300 shots covers the lower face or the eyes; 600 is full face; 900 is face and neck. Eye Thermage is 450 shots with the eye tip.
- HIFU: counts are not equivalent to Ultherapy counts because energy per shot differs by device. 300 shots of Shurink is not 300 shots of Ultherapy.
- Threads: 4–6 per side for cheeks and jawline is common; "1 thread ₩11,000" is a loss-leader price for a single mono thread that does not lift.
Ask for the shot count on the receipt, not just the total.
How do I know the Ultherapy or Thermage tip is genuine?
Both devices use single-use cartridges or tips with a shot counter. Reputable Korean clinics open the tip in front of you and show the counter before and after. Korean patients ask for this routinely (the phrase is 정품 개봉 보여주세요, "please open the genuine product in front of me"), and some clinics advertise a refund guarantee if the tip is not genuine. If a clinic will not show the tip, that is a reason to leave, not to negotiate.
Can Ultherapy, Thermage or HIFU make my face look thinner or more sunken?
This is the question that worries thin patients most, and it is legitimate. Case reports in the literature describe facial fat loss after focused ultrasound, and practitioners generally attribute it to too much energy at the 4.5 mm depth in a face without enough fat to spare. The practical implications:
- Tell the doctor if you have a slim face, low body fat, or have lost weight recently. Depth and energy should be adjusted, and the 4.5 mm cartridge may be skipped over the cheeks.
- This is one reason Ultherapy's imaging matters: the operator can see fat thickness before firing.
- Thermage can also reduce fat if the energy is set high. Fat loss is not an ultrasound-only problem; it is a problem of heat reaching depth at high energy. For a thin face with skin laxity, the shallow-acting Sofwave is the relatively safe choice, and Ultherapy or Thermage should be planned at lower energy.
If a clinic says the risk does not exist, it is wrong. If it says the risk is managed by assessment and settings, that is the correct answer.
Does it hurt, and should I take sedation?
Ultherapy at full energy is the most painful of the group; Korean clinics commonly offer sleep sedation (수면마취) for 300 shots and up, sometimes included in the price, sometimes ₩50,000–150,000 extra. Thermage FLX, Sofwave and most HIFU are done with numbing cream and are tolerable for most people. Thread lifts use local anesthetic injections; the insertion is tolerable, the next week is the uncomfortable part.
If you are traveling alone, note that sedation means you cannot drive and should not fly the same day.
How do Seoul prices compare?
| Treatment (same unit) | Seoul first-visit | Tokyo | United States | Taipei |
|---|---|---|---|---|
| Ultherapy ~300–360 shots | ₩600,000–1,089,000 | ¥242,000 (360 shots) | US$2,300–5,500 (full face/neck) | NT$54,000–90,000 (full face) |
| Thermage FLX 600 shots | ₩1,190,000–2,200,000 | ¥188,000–363,000 | US$1,800–2,500 (lower face) | NT$60,000–80,000 |
| Thread lift per thread | ₩11,000–219,000 | ¥30,000–60,000 | US$200–500 | NT$5,000–25,000 |
Lifting devices are where the Seoul discount is largest, typically 2–4× cheaper than Japan and the US at the same shot count. That is also why they are the most heavily upsold treatments for visitors; see the quote-vs-bill page before you book.
Frequently asked
Ultherapy or Thermage, which is better? Different layers. Ultherapy for sagging you can lift with your fingers along the jaw; Thermage for skin that looks loose but does not drop. Many Korean patients do both, staged.
Is Sofwave the same as Ultherapy? No. Same energy type, one-third the depth. It is a skin-quality treatment that happens to be marketed as lifting.
Is Korean HIFU (Shurink) a cheap Ultherapy? Roughly, yes: same principle, less energy, no imaging, shorter duration, much cheaper. A reasonable choice for mild laxity or a first try.
How long after Ultherapy can I fly? Same day is fine without sedation. With sedation, next day.
Can I do a thread lift and Ultherapy on the same trip? Clinics do combine them. The order is Ultherapy first, threads after. Applying focused ultrasound over freshly placed threads can damage them, so the reverse order is avoided.
My skin feels looser two weeks after Ultherapy. Is that normal? It depends on the case. Sometimes it is swelling going down, which can feel like softening before collagen remodeling at 2–3 months and recovers on its own. Sometimes it is cheek fat that has reduced, which is real sagging and is the fat-loss scenario above. The treating doctor should assess which one it is.
Sources
- Alam M et al. Ultrasound tightening of facial and neck skin: a rater-blinded prospective cohort study. J Am Acad Dermatol. 2010.
- Fitzpatrick R et al. Multicenter study of noninvasive radiofrequency for periorbital tissue tightening. Lasers Surg Med. 2003.
- Suh DH et al. Outcomes of polydioxanone knotless thread lifting for facial rejuvenation. Dermatol Surg. 2015.
- Published case reports of facial fat atrophy following focused ultrasound treatment (dermatology literature, 2015–2024).
- US FDA 510(k) clearances: Ultherapy (brow, submental, décolleté lines), Thermage, Sofwave.
- Seoul prices: Gangnam Unni event listings and clinic price pages, 5 Oct 2026 (see the price page methodology).
- Overseas prices: see the price page sources.