Thermage FLX: How It Works, Who It Suits and Recovery

Thermage FLX delivers 6.78 MHz monopolar radiofrequency evenly across the dermis and the fibrous septae beneath it. Treatment takes about 40–90 minutes depending on shots, downtime is minimal (temporary redness or swelling), and immediate tightening, with gradual improvement over 2–6 months.
Medically reviewed by Dr. Lee Da-in, Medical Director, Daybeau Clinic Seomyeon · Last reviewed October 2026

What is Thermage FLX?

Thermage FLX delivers 6.78 MHz monopolar radiofrequency evenly across the dermis and the fibrous septae beneath it. Heat contracts existing collagen immediately and stimulates new collagen, supporting tightening and fine-line improvement.

Common concerns

  • Skin laxity
  • Fine facial lines
  • Lines around the eyes
  • Jawline lines

Treatment areas: full face, eyes (eye tip), jawline, neck, body.

Key facts

  • Device / product: Thermage FLX
  • Treatment time: about 40–90 minutes depending on shots
  • Anaesthesia: numbing cream, with built-in cooling and vibration
  • Downtime: minimal (temporary redness or swelling)
  • When results show: immediate tightening, with gradual improvement over 2–6 months
  • Repeat interval: usually reassessed around once a year

Learn more

See the Thermage FLX procedure steps, recovery and side effects, and how it compares in Thermage FLX vs Sofwave.

Medical notice: every procedure can cause side effects such as swelling, bruising, redness, pain, inflammation or pigmentation, and results and their duration vary between individuals. Suitability and method are decided only after a consultation with the doctor. This page is general information, not a diagnosis. Fees follow the clinic's official non-covered fee schedule.

Frequently Asked Questions

How many shots of Thermage FLX do I need?

It depends on face size, skin thickness and areas, and is decided at consultation.

Is Thermage around the eyes safe?

A dedicated eye tip and protective eye shields are used, and the eyes are checked beforehand.

When will I see Thermage results?

There is some immediate tightening, and changes develop over months as collagen rebuilds.

Dr. Lee Da-in

Not sure this is the right treatment?

Send Dr. Lee's team a photo and your travel dates. We'll suggest a plan and a consultation time.

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