Thermage FLX Skin Tighteningin Gangnam, Seoul
Thermage FLX is a non-invasive treatment that uses monopolar radiofrequency to heat the deep dermis and tighten skin while stimulating collagen. At QD Clinic in Gangnam, Seoul, we assess your skin first, then decide the areas and number of shots. A full-face session usually takes about 45–90 minutes with little downtime. (Results vary by individual.)
Who it’s for
- Mild skin laxity and loss of firmness
- Those who prefer a radiofrequency approach with a single session
- People who want to address skin texture and tightness together
Radiofrequency and ultrasound lifting suit different goals; the right approach is decided at consultation.
How it works
Thermage FLX delivers monopolar radiofrequency that heats the deep layers of the skin while a vibrating tip and cooling spray help comfort and protect the surface. The heat contracts existing collagen and prompts gradual renewal over the following months. Thermage is a radiofrequency technology cleared by the US FDA for the non-invasive treatment of wrinkles and for temporary improvement in the appearance of cellulite.
THE MECHANISM, STEP BY STEP
01Monopolar radiofrequency
Thermage FLX uses monopolar radiofrequency to heat a volume of the dermis broadly, rather than focusing energy on separate points, covering the area with a treatment grid.
02A two-part collagen effect
The heat contracts existing collagen fibres and prompts the skin to form new collagen over the following months — which is why some change can appear earlier and more develops with time.
03Surface protected, comfort added
A cooling spray protects the skin surface between pulses, while a vibrating tip helps comfort during delivery.
04Calibrated delivery (FLX)
The FLX system helps calibrate the energy across the treatment area for even heating, with the plan set after a skin assessment.
Treatment areas
- Full face
- Overall tightening and firmness.
- Face & neck
- Face with the under-chin and neck.
- Eyes
- A dedicated tip for the delicate eye area.
- Body
- For areas of body skin laxity, decided at consultation.
What the procedure is like
- 1Consultation and skin assessment
- 2Cleansing and mapping with a treatment grid
- 3Radiofrequency delivery with cooling and vibration
- 4Soothing and aftercare guidance
Time: A full-face session takes about 45–90 minutes.
Recovery & aftercare
- Little to no downtime; most people return to daily activities the same day.
- Temporary redness or mild swelling may occur.
- Use sun protection and follow the aftercare guidance we provide.
What to expect over time
A general guide to how the days and months after treatment usually unfold. Results vary by individual.
DAY 0 Treatment day
Brief heat with each pulse, balanced by cooling and vibration; afterwards mild redness or a flushed feeling, sometimes slight swelling, that usually settles within hours. Most people return to daily activities the same day.
DAY 1-3 Settling
Any redness or mild swelling generally eases. Makeup and normal skincare can usually resume as advised.
WEEK 2-6 Early firming
Some people notice the skin feeling a little firmer or smoother. This varies from person to person.
2-6 MONTHS Collagen renewal
As new collagen forms, a gradual tightening and firmness become more noticeable for many people. This is typically when results are assessed. (Results vary by individual.)
~6 MONTHS Review & maintenance
Your doctor reviews the outcome and discusses timing for a further session based on your skin.
Sessions & results
Many people have a single session, with changes appearing gradually over about 2–6 months as collagen renews. Your plan is decided at consultation. (Results vary by individual.)
How it compares
These are all non-invasive, energy-based lifting and tightening treatments — but they use different energy and reach different depths, so they suit different goals.
| Comparison | Thermage FLX | Ultherapy PRIME | Sofwave |
|---|---|---|---|
| Energy | Monopolar radiofrequency | Focused ultrasound (imaging-guided) | Ultrasound (SUMS) |
| Main target | Broad heating of the dermis | Up to ~4.5 mm — reaches the SMAS | Mid-dermis (~1.5 mm) |
| Often chosen for | Overall tightening and texture | Deeper lift; jawline and neck laxity | Fine lines and early laxity |
| Sensation | Warm pulses with cooling and vibration | Brief warmth at each point | Generally comfortable with cooling |
| Downtime | Little to none | Little to none | Little to none |
| Typical plan | Often a single session | Often a single session | Often a single session |
Neither is “better” — they work differently and suit different goals. The right choice is decided after we assess your skin.
Safety & considerations
Possible reactions
- Temporary redness, a flushed feeling, or mild swelling
- Tenderness in the treated areas for a short time
- Occasionally small areas of bruising
- Rarely, small blisters, surface changes or temporary numbness that typically settle
When to take extra care
- Pregnancy or breastfeeding — let us know at consultation
- Implanted electrical devices such as a pacemaker or defibrillator — radiofrequency may not be suitable; tell your doctor
- Metal implants in the treatment area — tell your doctor
- Recent fillers, threads or other energy treatments — tell your doctor so timing can be planned
- A history of keloid or difficulty with wound healing
Thermage FLX is not a replacement for surgical lifting and does not suit every skin type or degree of laxity. Whether it is right for you is confirmed during consultation. Effects and downtime vary by individual, and side effects may occur.
Your care at QD Clinic
Performed by a board-certified doctor
Your treatment is performed and medically reviewed by a board-certified doctor, not delegated unsupervised.
Calibrated FLX delivery
We use the Thermage FLX system, which calibrates energy across the treatment grid and combines surface cooling with a vibrating tip.
Care in your language
Consultation in English, with 中文 and 日本語 support arranged on request — including questions before you travel.
A short walk from Gangnam Station
Central Seoul location with guidance from the airport and nearby hotels, and hours shown in KST.
Pricing
Pricing depends on the areas treated and the number of shots. Please consult us for a personalized quote.
Frequently asked questions
The FLX handpiece adds vibration and cooling for comfort; most people feel brief heat with each pulse. Comfort options are discussed at consultation. (Results vary by individual.)
Thermage uses radiofrequency to tighten and improve texture; Ultherapy PRIME uses ultrasound to reach deeper layers for lifting. The right choice is decided after we assess your skin.
Many people have a single session per cycle. Your plan is decided at consultation. (Results vary by individual.)
Little to none. Temporary redness or mild swelling may occur and usually settles quickly.
Yes. Our doctors consult in English directly, and 中文 / 日本語 can be arranged in advance. Tell us your language on WhatsApp before your visit.
Often considered together
Treatments that are sometimes planned alongside this one, decided at consultation.
+Botulinum toxin
For dynamic lines from muscle movement (forehead, frown, crow’s feet), often planned alongside for a balanced result.
+Ultherapy PRIME
Focused ultrasound reaches deeper layers, including the SMAS, for lifting, while Thermage works broadly across the dermis. The two address different depths, and sequencing is decided by your doctor.
+Skin boosters
Injectable hydration and skin-quality treatments address surface texture and glow alongside radiofrequency tightening.
For international patients
Consultation in English / 中文 / 日本語 · WhatsApp · WeChat · KakaoTalk · a 4-minute walk from Sinnonhyeon / Nonhyeon Station (hours in KST) · card payment.
For International PatientsMedically reviewed by Dr. Sahyeok Hong, board-certified plastic surgeon and Director of QD Clinic.