The quick answer
Ultherapy delivers microfocused ultrasound with real-time visualization; Thermage FLX delivers monopolar radiofrequency through an external tip. Both can be discussed for selected tightening or lifting goals, but the delivery method differs. A small split-face study found improvement with both modalities and no statistically significant difference between them. It does not prove every current device version or treatment plan is equivalent.
At a glance
| What matters | Ultherapy | Thermage FLX |
|---|---|---|
| Energy | Microfocused ultrasound | Monopolar radiofrequency |
| Treatment planning | Real-time ultrasound visualization of tissue | External RF tip with device feedback and cooling |
| Quote quantity | Lines/shots plus cartridge depths and treatment area | Shots plus tip, area, energy and passes |
| Decision question | Why are the proposed focal depths right for my anatomy? | Why is this RF plan right for my skin laxity? |
| Benchmark below | 300 lines/shots | 600 shots; different coverage and dose |
Sources for the comparison: Ultherapy: microfocused ultrasound with visualization · Ultherapy: instructions for use and safety information · FDA: Thermage FLX device submission
The practical difference is how energy is delivered
Ultherapy's visualization lets the operator inspect tissue while planning delivery. Its facial transducers target specified focal depths. Thermage FLX uses RF heating with an external applicator. These are different ways of delivering energy, not a simple 'deep lift versus surface glow' rule that applies to everyone.
Confirm the version on the quote. Ultherapy and Ultherapy PRIME, and older Thermage generations and FLX, should not silently share every study result or package description. Eye, lower-face and neck treatments also involve different areas and protocols.
Read the evidence: Ultherapy: microfocused ultrasound with visualization · Ultherapy: instructions for use and safety information · FDA: Thermage FLX device submission
What the head-to-head trial found
A randomized, evaluator-blinded split-face trial published in 2019 treated 20 people with mild-to-moderate laxity using microfocused ultrasound with visualization on one side and monopolar RF on the other. Both sides improved; the investigators found no statistically significant between-side difference over six months.
That is more informative than comparing unrelated before-and-after galleries. It is still a small study of specific protocols, not proof that all RF and ultrasound devices work identically or that today's PRIME and FLX offers have been directly compared.
Read the evidence: Alhaddad et al., 2019: randomized split-face ultrasound versus RF trial
When either option is reasonable to discuss
Our editorial take: Ultherapy is worth discussing when the clinician identifies a lifting goal and explains how visualization and the chosen treatment depths help with your anatomy. Thermage is worth discussing when the proposed RF plan addresses your skin laxity and you understand the likely magnitude of change. The clinician should connect the diagnosis to the protocol.
If your main concern is hollow cheeks, active acne, pigment or a particular scar, start with that diagnosis rather than buying a lifting machine by reputation. A more expensive device is not automatically the right treatment, and neither should be sold as a guaranteed replacement for surgery.
Read the evidence: Ultherapy: microfocused ultrasound with visualization · Thermage: device information and clinical references
Pain, recovery and combination packages
Both treatments deliver energy and can be uncomfortable. The instructions and manufacturer information include possible reactions and precautions. A comfort claim from one clinic does not establish a universal pain winner; the area, intensity and pain-control plan matter.
Before agreeing to both in one visit, ask what each adds, how previous treatments or fillers affect the plan, and which adverse effects would trigger review. Ask for written aftercare and access to the treating doctor. Recovery advice and permission to travel should come from that clinician's assessment.
Read the evidence: Ultherapy: instructions for use and safety information · Thermage: device information and clinical references
Compare a complete Seoul quote
The benchmark quantities below differ. A 300-line Ultherapy listing may cover a different area from a 600-shot Thermage listing. Ask both clinics to price your intended area and include the device version, cartridges or tip, numbing, VAT and follow-up.
An attractive event price may be for an entry quantity, a restricted area or a package with conditions. Once those details match your plan, the median can help assess the quote. It cannot tell you which treatment will work better.
Read the evidence: Glow Lab: event-price conditions and extras · Glow Lab: price methodology and limitations
Current Seoul prices to compare
These are research options, not a personal treatment plan. Prices are medians of Korean event listings for the stated quantity; eligibility and extras vary. Read the price conditions.
These quantities describe different treatment plans. A shot or line is not a standardized dose across devices: area, cartridge, energy, depth and passes matter. Compare itemised totals for the same clinical goal, rather than dividing the price by the shot count.
Price context for a 300-line/shot listing; confirm cartridge depths and area.
Price context for 600 shots; confirm FLX, genuine tip and area.
Questions to take to the clinic
- Is my concern laxity, volume loss or a surface problem?
- Which exact machine version and treatment areas are included?
- How will visualization, depths or RF settings guide my plan?
- What are the expected benefits, discomfort and risks for my face?
- What is the full price, and what would a second treatment add?
Common questions
Which is better for lifting: Ultherapy or Thermage?
There is no universal winner established here. A small trial found improvement with both modalities without a statistically significant difference. The clinician must assess the anatomy and explain the specific protocol.
Can I do Ultherapy and Thermage together?
A clinician may propose a combination, but it should have a separate rationale for each treatment, a safety assessment and a clear total cost. The existence of a package is not evidence that you need both.
Why compare 300 Ultherapy lines with 600 Thermage shots?
Those are the available benchmark quantities, not equivalent doses. Match treatment areas and protocols before comparing prices.
Sources and scope
This is sourced editorial research, not a hands-on treatment review or an independent clinical trial. Device specifications and manufacturer claims are distinguished from human study findings. Study size, protocol and comparison groups limit what can be concluded. The practical trade-offs labelled as our editorial take are interpretations, not proven superiority. Medical suitability and travel clearance require the treating clinician's assessment.
- Ultherapy: microfocused ultrasound with visualization
- Ultherapy: instructions for use and safety information
- Thermage: device information and clinical references
- FDA: Thermage FLX device submission
- Alhaddad et al., 2019: randomized split-face ultrasound versus RF trial
- Glow Lab: price methodology and limitations
Have a quote already?
Match the product, dose and treatment area, then see how the total compares with Korean event prices.
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