Thermage FLX
Thermage FLX is a monopolar radiofrequency treatment that heats the deeper dermis to tighten existing collagen and stimulate new collagen. It improves skin laxity, texture and crepiness on the face, around the eyes and on the body. A face session takes about 45–90 minutes with numbing cream and there is no downtime.
What is Thermage FLX?
Thermage tightens the skin layer itself, which complements HIFU treatments like Ulthera that reach deeper structural layers. Many patients alternate or combine them.
Thermage FLX at a glance
- Procedure time: 45–90 minutes
- Anesthesia: Numbing cream
- Downtime: None; mild redness for hours
- Discomfort: Moderate heat
- Sessions: Once; maintenance about yearly
- Location: Violacell Plastic Surgery, 3F, 138 Dosan-daero, Gangnam-gu, Seoul (Sinsa Station Exit 1)
How it works
A cooled treatment tip delivers radiofrequency energy in overlapping passes. Feedback technology adjusts each pulse for more even heating.
Who it is for
- Crepey or loose skin
- Fine lines and enlarged pores
- Eyelid hooding and eye-area crepiness
- Body skin laxity
Results and how long they last
Some tightening is felt immediately, with gradual improvement over 2–6 months.
Risks, recovery and aftercare
Temporary redness, swelling and, rarely, blisters or small depressions.
Frequently asked questions
Thermage or Ulthera?
Thermage targets the skin; Ulthera targets deeper SMAS. See Thermage vs Ulthera.
Related treatments and guides
Medically reviewed by Dr. Kim Young-jun, plastic surgeon · Last reviewed 2026-09-30. This page is general medical information, not a diagnosis; suitability is decided at an in-person consultation.
Book a consultation in Sinsa, Seoul
Call +82-2-518-9119 or request an online consultation. Open Mon–Thu 10:00–19:00, Fri 10:00–21:00, Sat 10:00–17:00; closed Sundays and public holidays.

