Is Thermage FLX Right for You? Good Candidates and When to Avoid It

Thermage FLX tends to suit fine lines and laxity from thinning skin, while other options may suit better for deep SMAS-level sagging as the main cause.
Medically reviewed by Dr. Lee Da-in, Medical Director, Daybeau Clinic Seomyeon · Last reviewed October 2026

Often a good fit for

  • Fine lines and laxity from thinning skin
  • Delicate areas such as around the eyes
  • Concern: Skin laxity
  • Concern: Fine facial lines

Other options may suit better for

  • Deep SMAS-level sagging as the main cause

Treatment may be limited or need discussion if

  • Pregnancy
  • Pacemakers or other implanted electronic devices
  • Metal implants in the area (tell the doctor)
  • Inflammation in the area

Still deciding?

Thermage FLX heats the dermis broadly with radiofrequency, while Sofwave sends parallel ultrasound beams to the mid-dermis. Both target dermal collagen but differ in energy type and heat distribution. See the full comparison: 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

From what age can I get Thermage FLX?

Skin condition and concerns matter more than age. Patients under 19 need guardian consent in Korea.

Who should not get Thermage FLX?

Pregnancy, breastfeeding or inflammation in the area usually means postponing; this is decided at consultation.

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.