Compare treatments

Ultherapy Prime vs Thermage FLX: how to choose

Ultherapy Prime uses focused ultrasound with imaging to lift deeper layers; Thermage FLX uses radiofrequency to tighten the skin evenly. The right choice depends on your skin, the area and your timeline, which the doctor checks in person.
Ultherapy Prime vs Thermage FLX comparison

✓ Doctor consultation first
Every plan is decided with a STON doctor

✓ Inside Lotte Hotel Seoul, 9F
Underground from Euljiro 1-ga Station

✓ Open 7 days
Weekdays to 20:30, weekends to 17:00

At a glance

  • Energy: Micro-focused ultrasound / Monopolar radiofrequency
  • Main target: Deeper support layers, lifting / Dermis, tightening and texture
  • Imaging: Real-time ultrasound imaging / No imaging; pulse-by-pulse feedback
  • Feel: Deep, focused points / Brief heat waves with cooling

The short answer

Ultherapy Prime uses focused ultrasound with imaging to lift deeper layers; Thermage FLX uses radiofrequency to tighten the skin evenly.

Side by side

Ultherapy Prime Thermage FLX
Energy Micro-focused ultrasound Monopolar radiofrequency
Main target Deeper support layers, lifting Dermis, tightening and texture
Imaging Real-time ultrasound imaging No imaging; pulse-by-pulse feedback
Feel Deep, focused points Brief heat waves with cooling

Ultherapy Prime may suit you if

Sagging and heaviness along the cheeks and jaw are your main concern.

Thermage FLX may suit you if

Loose, crepey skin and overall firmness matter more than lifting.

Can they be combined?

Some patients combine options that work at different depths or in different ways. Whether, when and in what order is decided by the doctor after examining your skin.

What to bring to your consultation

  • Which area bothers you most
  • Previous treatments, with names and dates
  • Your travel dates and any events

This page is general information to help you prepare for a consultation. It does not replace diagnosis or a treatment decision. Whether a treatment suits you, and how it is done, is decided by a doctor after examination. Results and side effects vary between people.

Common questions

Is Ultherapy Prime better than Thermage FLX?

Neither is better in general. They do different things, and the better fit depends on your concern.

Which one has less downtime?

Ultherapy Prime: most people return to normal activity the same day; mild tenderness along the jaw can last a few days. Thermage FLX: little to none for most people; mild redness usually fades within hours.

Can I decide at the clinic?

Yes. Many patients arrive undecided; the doctor explains the options after examining you.