
Thermage FLX
Key specs
- Technology
- Monopolar radiofrequency (RF)
- Depth
- 2-4 mm deep dermis
- AccuREP real-time impedance feedback
- Comfort Pulse vibration for comfort
- Treatment time
- about 35 min
- Sessions
- 1 per year for maintenance

Solta Medical Β· AccuREP Technology
Thermage FLX (manufactured by Solta Medical) is the current gold-standard device for non-invasive monopolar radiofrequency skin tightening, with over two decades of peer-reviewed clinical evidence. The FLX platform introduces AccuREP technology β real-time tissue impedance feedback that auto-adjusts energy per pulse β plus Comfort Pulse vibration for significantly improved patient comfort versus earlier generations. Monopolar RF heats the deep dermis and subcutaneous layer to 65-75Β°C, producing both immediate collagen contraction and progressive neocollagenesis over 3-6 months.
Board-Certified
Dermatologist
AAD International Fellow
IFAAD
FDA-cleared
Where applicable
MFDS-registered
Korean MoH&W
Thermage FLX in Gangnam, Seoul. AccuREP real-time feedback, Comfort Pulse, board-certified dermatologist. Over two decades of clinical evidence.
Best for
Suited for
| Item | Details |
|---|---|
| Treatment time | about 35 minutes |
| Pain & comfort | Brief warmth during energy delivery; AccuREP feedback and Comfort Pulse vibration improve comfort versus earlier generations |
| Downtime | None β all daily activities resume immediately; mild redness resolves in 1-2 hours |
| Onset of results | Early collagen remodeling from ~1 month; visible lifting and contouring improvement at ~3 months |
| Duration & maintenance | Peak result at 3-6 months; visible firmness often 12-24 months with annual maintenance |
| Category | Ultherapy Prime | Thermage FLX |
|---|---|---|
| Mechanism | Microfocused ultrasound (MFU-V) β 1.5 / 3.0 / 4.5 mm targeted layers | Monopolar radiofrequency (RF) β 2-4 mm deep dermis |
| Best-suited areas | Lifting of the jawline, brow, and neck | Jawline definition and overall skin firmness |
| Treatment time | 20-30 min | about 35 min |
| Downtime | None β mild tenderness along the jawline possible for 1-3 days | None β mild redness resolves in 1-2 hours |
| Duration & maintenance | Visible results typically ~6-9 months; maintenance session every 6-9 months | Visible firmness often 12-24 months; annual or biennial maintenance |
Patients typically feel brief warmth while each radiofrequency pulse is delivered. Thermage FLX adds AccuREP real-time impedance feedback and Comfort Pulse vibration, which significantly improve comfort compared with earlier generations. Mild redness after the session usually resolves within 1-2 hours, and makeup is fine immediately.
A single session is typical β most patients have one Thermage FLX treatment per year for maintenance. Tightening develops gradually over 2-6 months as new collagen rebuilds, so the dermatologist assesses your result before planning any further session rather than scheduling a fixed series upfront.
There is no downtime. Mild redness may appear for 1-2 hours, makeup is fine immediately, and all daily activities β exercise, cleansing, regular skincare β resume the same day. Daily broad-spectrum SPF 30+ is recommended over the following weeks to protect the remodeling collagen.
Thermage fits patients focused on skin firmness and mild laxity who prefer a conservative, tightening-first plan over dramatic change. It does not replace fillers or skin boosters β volume and texture are different problems β so the dermatologist confirms in consultation that tightening is the right first priority.
about 35 min
Typically 1 / year
None
3-6 months
Same day
Subtle tightening visible. Mild redness resolves in 1-2 hours.
1 month
Early collagen remodeling begins.
3 months
Visible lifting and contouring improvement.
6 months
Peak result.
12 months
Maintenance session recommended.
Same day
Subtle tightening visible. Mild redness resolves in 1-2 hours.
1 month
Early collagen remodeling begins.
3 months
Visible lifting and contouring improvement.
6 months
Peak result.
12 months
Maintenance session recommended.

Key specs
01
Skin quality and laxity goals are reviewed in consultation.
02
The dermatologist determines whether tightening should be the first priority or combined with other care.
03
The treatment plan is explained with recovery expectations before treatment.
04
Follow-up planning is discussed based on maintenance goals.
01
Skin quality and laxity goals are reviewed in consultation.
02
The dermatologist determines whether tightening should be the first priority or combined with other care.
03
The treatment plan is explained with recovery expectations before treatment.
04
Follow-up planning is discussed based on maintenance goals.
βInjectables and energy devices are performed by physicians β never delegated to non-physician staff. The clinic is led by a board-certified dermatologist.β
Cases shown are Fitzpatrick IIIβIV (East Asian skin). Results in lighter (IβII) or darker (VβVI) skin types may differ β discussed at consultation.
First 1-2 hours
Mild redness possible. Makeup OK immediately.
Day 1 onward
Zero downtime. Resume all daily activities.
Week 1-12
Daily SPF 30+ to protect remodeling collagen.
Annual
Schedule maintenance at 12 months.
First 1-2 hours
Mild redness possible. Makeup OK immediately.
Day 1 onward
Zero downtime. Resume all daily activities.
Week 1-12
Daily SPF 30+ to protect remodeling collagen.
Annual
Schedule maintenance at 12 months.
No. Tightening, skin quality, and volume are different problems, even if they show up at the same time.
Because they are both non-surgical anti-aging treatments, but they are not interchangeable in every face.
Thermage FLX uses radiofrequency to tighten skin from the surface down, while Ultherapy uses focused ultrasound for deeper tissue lifting. A dermatologist often recommends one or both based on your skin laxity pattern.
Yes. Thermage FLX is particularly effective for overall skin firmness, jawline definition, and collagen remodeling. Results develop over 2β6 months as collagen rebuilds.
A full-face Thermage treatment typically uses 600 shots. Your dermatologist adjusts the shot count and energy level based on skin thickness and treatment area.
Tightening typically develops gradually over 2β6 months as new collagen rebuilds, and many patients maintain visible firmness for 12β24 months. Duration varies with age, sun exposure, and daily skincare routine. Annual or biennial maintenance is common, with some patients alternating Thermage with Ultherapy on a longer cycle.
Thermage FLX is FDA-cleared (510(k) K170758, 2017) and CE-marked. Common short-term effects include mild redness for a few hours and brief warmth during energy delivery. AccuREP real-time impedance feedback and Comfort Pulse vibration significantly improve comfort versus earlier generations. Serious effects are rare when performed by a board-certified dermatologist using authentic Solta-supplied tips. Medical history and active skin conditions are reviewed before treatment.
Standard Thermage FLX at Delight Dermatology is in the range of approximately β©1,500,000 to β©3,000,000. The final quote depends on tip type (Face / Body / Eye) and the area treated, assessed during in-person consultation. Eye Thermage is quoted separately.
International patients can request a consultation via the online booking form, or message via Instagram (@delight_gangnam), KakaoTalk, or LINE. On-site interpreter assistance is available for Mandarin Chinese and other languages with prior arrangement. Delight Dermatology is registered with the Korean Ministry of Health and Welfare for foreign-patient services (Foreign Patient Medical Institution Registration #357-15-02460). Initial consultation is complimentary.
Notice
Tell the dermatologist at consultation if any of the following apply.
For your visit
Related procedures
Background reading
Notice: Individual results may vary depending on skin condition, treatment history, and recovery factors. All treatment plans are determined through individual consultation with a board-certified dermatologist. The information on this page is for reference only and does not constitute medical advice or guarantee specific outcomes.
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