Thermage FLX

Tightening that delivers radiofrequency heat evenly through the whole dermis to firm up loosened skin

Duration: 40–60 min
Anesthesia: Numbing cream; sleep sedation if needed
Recovery: Almost none
Lasts: 12–18 months
Sessions: 1 session · annual maintenance

Recommended for

Who it is for

✓Pillow marks last long and the surface skin feels soft
✓Fine lines around the eyes and mouth, and enlarged pores
✓Your face is slim and you worry Ultherapy would hollow your cheeks
✓You want to restore density and texture before pulling

How it works

Target layer

Whole dermis (epidermis protected · volumetric heating down into the dermis)

Layer illustration

Monopolar radiofrequency (RF) warms the entire collagen matrix of the dermis broadly and evenly. Loosened collagen contracts immediately, and new collagen builds up over the following months, raising skin density. Unlike ultrasound that pulls at a point, it tightens a whole surface — if Ultherapy is the 'structural work', Thermage FLX is the 'finishing work' that firms the loose outer wall.

Renewall way

The Renewall approach

01
Reading your face comes before the device name — we separate the 'sagging type' (collapsed pillar) from the 'loss-of-density type', and recommend Thermage only to those it suits
02
For slim faces with hollow cheeks, rather than a strong lift that touches the fat layer, filling surface density with Thermage is the safer way to bring the skin close
03
For mixed sagging and looseness, 'Ul-Thermage' builds the base with Ultherapy and fills the surface with Thermage — if skin is thin or has redness or active pigment, the sessions are split 1–2 weeks apart

Pairs well with: Ul-Thermage · Ultherapy Prime · Re2O · Alma Titanium

Process

Treatment process

STEP 1
Consultation and face analysis — the doctor personally checks skin layers, sagging and fat distribution
STEP 2
Design — equipment, energy and vectors are planned layer by layer
STEP 3
Treatment — performed by the same doctor who consulted you
STEP 4
Soothing care and going home
STEP 5
Next-day check — the doctor reviews your progress personally

Before & After

Thermage FLX — Before & After

View all →

Cases coming soon

FAQ

Which suits me, Ultherapy or Thermage?+

'Sagging' areas such as the jawline and marionette area suit Ultherapy; 'loosened' surface skin with fine lines and pores suits Thermage. They are not competitors but tools for different depths, so when both are present we divide their roles and design them together.

Will my cheeks become hollow?+

Thermage tightens the dermis and does not directly reduce fat volume. We often recommend it instead of Ultherapy for slim faces with little cheek fat.

When will I see results?+

You may feel slight tightening right after from collagen contraction, and results are clearest 2–3 months later as new collagen builds. Healthier density also changes how skin reflects light, so complexion improves too. It generally lasts about a year, so we recommend once a year.

Does it hurt or swell?+

FLX adds cooling and vibration so it hurts less, but you will feel heat. It is done with numbing cream, and sensitive patients can choose sleep sedation. Apart from temporary redness, there is almost no downtime.

Can I have it on the same day as Ultherapy?+

If your skin barrier is stable, they can be done on one day. If your skin is thin, has redness or active pigment, or is sensitive to pain, splitting them 1–2 weeks apart gives steadier results.

Doctor's column (Korean)

Related treatments

Ultherapy Prime

Curious about a plan designed for your face?

The doctor who consults you performs the treatment.

Book a consultation

Renewall Difference

Four things that set The Renewall apart

Lifting is not mass-produced — we design the total energy and the vectors.

The Director, from consultation to treatment

Dr. Yang personally handles your first consultation, facial analysis, design and treatment. The doctor who consults you is the doctor who treats you.

Layer-by-layer diagnosis, tailored design

We first find which layer — from the epidermis to the SMAS — is causing the concern, then match equipment and energy to that layer.

Personal next-day follow-up

The day after treatment the doctor checks your progress in person and continues to manage your long-term plan.

Private one-person room, comfort first

We reduce pain and anxiety first, and treat you in a room for one person only.

Opening hours & directions

Mon · Tue · Fri: 10:00 – 19:00
Thu (late opening): 10:00 – 21:00
Sat: 10:00 – 16:00(no lunch break)
Lunch break: 13:00 – 14:00
Wed · Sun · public holidays: Closed

18 Seolleung-ro 157-gil, Gangnam-gu, Seoul (S&K Square, 4F–5F)

200 m from Exit 5, Apgujeong Rodeo Station (Suin-Bundang Line)

02-512-8800