Tell us your history
List any lifting devices you have had before and how they felt, so the doctor can compare.
Trying to decide between Ultherapy PRIME, Thermage FLX and Sofwave? This side-by-side comparison sets out how each lifting device feels, how deep it works, what it suits and how much downtime to expect.

Gangnam Celliting Clinic · 121 Teheran-ro, Gangnam-gu, Seoul · Gangnam Station Exit 12 (4-min walk)
The main difference between lifting devices is the energy they use and the depth they reach. Ultherapy PRIME uses focused ultrasound for deeper lift, Thermage FLX and XERF use radiofrequency for broad tightening, and Sofwave targets the mid-dermis for firmness and fine lines. At our Gangnam clinic, the doctor matches the device to your sagging pattern, skin thickness and comfort.
Each device suits a different layer and concern. The table simplifies general information about each platform; your own settings, sensation and recovery may differ.
| Device | Energy and depth | Best for | Feel | Typical downtime |
|---|---|---|---|---|
| Ultherapy PRIME | Focused ultrasound, about 1.5–4.5 mm | Jowls, jawline, brow, neck | Deep warm pinpricks | Minimal; tenderness possible |
| Thermage FLX | Monopolar RF, dermis and below | Crepey skin, eyes, overall tightening | Brief heat with cooling | Minimal; mild redness |
| Sofwave | Ultrasound beams, about 1.5 mm | Fine lines, skin firmness | Warmth with built-in cooling | Minimal; mild redness |
| XERF | Multi-frequency RF, adjustable depth | Tightening and contour | Gentle to moderate heat | Minimal; mild redness |
| Olla Wave / Fortra | Explained at consultation | Add-ons in combined lifting | Varies by setting | Minimal, per clinic |
The best way to choose is to start from your main concern, not from the device name. These four questions narrow the field quickly.
For a deeper look at individual platforms, read about Ultherapy or XERF skin tightening.
Several popular beliefs about lifting devices are only partly true. Here are the ones our doctors hear most often from overseas patients.
Not necessarily. Placing energy at the right depth matters more than the total count, and excessive energy can raise the risk of side effects.
Some tightening is felt early, but most collagen-related change develops over two to three months.
Lifting devices are designed to tighten tissue. Settings are chosen to avoid unwanted volume loss, and slimming is not their main purpose.
Devices suit mild to moderate sagging. They give a subtler change than a surgical facelift.
Suitability is a medical decision made by your doctor after an in-person consultation and review of your health history.
List any lifting devices you have had before and how they felt, so the doctor can compare.
The doctor checks skin thickness, laxity and fat distribution across the cheeks, jaw and neck.
You receive a short explanation of one or two suitable devices and why the others are less fitting.
Depth, energy and comfort options are agreed before the device is switched on.
Progress photos during the three-month follow-up help judge how well the chosen device worked for you.
No serious complication since 2007. FDA/KFDA-cleared devices and verifiable, genuine consumables.
Dr. Ho-chan Kim and Dr. Young-mi Rhee personally consult and treat. Nothing is handed off.
Named an Advanced Regenerative Medicine Institution by the Ministry of Health and Welfare in June 2026.
You do not need to choose a device before travelling. Send photos and your treatment history through WhatsApp, and the doctors can suggest likely options in English, Chinese, Japanese or Vietnamese. Final choices are made in person in Gangnam, Seoul. Because the devices compared here involve minimal downtime, a stay of a few days is usually enough, and the clinic’s free three-month follow-up continues after you return home.
Reviewed by Dr. Ho-chan Kim, MD, PhD · Updated October 2026
For jowls caused mainly by deeper tissue descent, focused ultrasound such as Ultherapy PRIME is often considered first because it reaches support layers. Thermage FLX may be added for skin tightening. The doctor decides after checking your tissue thickness and laxity.
Both use ultrasound, but Sofwave works mainly in the mid-dermis with parallel beams and built-in cooling, while Ultherapy focuses energy at several depths, including deeper support layers, guided by real-time ultrasound imaging. Sofwave is often chosen for fine lines and firmness, Ultherapy for deeper lift.
It varies by person and setting. Devices with built-in cooling are often described as more tolerable, but sensitivity differs. The clinic manages comfort with options such as topical anaesthesia or AirNox nitrous-oxygen analgesia, matched to the device.
Yes. Many people change devices as their skin changes or to target a different concern. Bring notes or photos from previous sessions so the doctor can choose settings that complement what you had before.
Both can be used on thin skin when settings are adjusted carefully. The doctor may choose shallower depths or lower energy and avoid overlapping heat in thin areas. Safety depends more on correct settings than on the energy type.
Share your photos and past treatments through the consultation form or WhatsApp, and our doctors will explain which devices suit you, and why.
Medical information on this page is provided by Gangnam Celliting Clinic and reviewed by our medical directors. It is not a substitute for an in-person medical consultation. Individual results vary, and all procedures carry potential risks and side effects that your doctor will explain before treatment.

From skin lifting and stem cell treatments to regenerative skin care, our two MD-PhD directors plan every treatment personally. Send us your questions and travel dates.
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How to find us


WhatsApp :
+82-10-4567-3237
Address : 11F & 13F, WON Building, 121
Teheran-ro, Gangnam-gu, Seoul 06133, Republic of Korea
Gangnam Station, Exit 12
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