Smile Line Thermage FLXin Gangnam, Seoul
Smile Line Thermage FLX firms the cheek and the skin around the nasolabial folds (the smile lines), where laxity can deepen the fold. Monopolar radiofrequency tightens the mid-face skin that supports the fold and stimulates collagen; it firms rather than fills. At QD Clinic in Gangnam, Seoul, we assess whether firming, filler or a combination fits your goals; a session usually takes about 30–45 minutes with little downtime. (Results vary by individual.)
Who it’s for
- Softening mid-face skin that deepens the smile lines
- People who want to firm the cheek that supports the fold
- Those who prefer radiofrequency over filler, or to combine both
- Anyone who prefers little downtime
Thermage firms skin and does not fill a static fold; a deep nasolabial fold may be better addressed with filler or a combined plan, decided at consultation.
How it works
Monopolar radiofrequency heats the deep dermis of the mid-to-lower cheek around the smile lines, contracting existing collagen for an early firming effect and prompting gradual renewal, so the skin that supports the fold may firm over the following months. Because it firms rather than fills, it is often planned alongside — or instead of — filler depending on the fold. Thermage is a radiofrequency technology cleared by the US FDA for the non-invasive treatment of wrinkles.
THE MECHANISM, STEP BY STEP
01Radiofrequency heats the deep dermis
Monopolar radiofrequency heats a broad volume of the deep dermis in the cheek that supports the fold, rather than focusing energy to separate points.
02An early effect, then renewal
The heat contracts existing collagen for an immediate firming effect, and prompts gradual collagen renewal over the following months.
03It firms rather than fills
Thermage tightens the mid-face skin that supports the fold; it does not add volume inside a static fold the way a filler does.
04Cooling and vibration for comfort
Each pulse is paired with a cooling spray and a vibrating tip, which protect the surface and ease the sensation of heat.
Treatment areas
- Nasolabial (smile line) area
- The skin along the fold.
- Mid-to-lower cheek
- The cheek that supports the fold.
- Perioral area
- Fine lines around the mouth.
What the procedure is like
- 1Consultation on firming, filler or a combination
- 2Cleansing and grid mapping around the smile lines
- 3Radiofrequency delivery with cooling and vibration
- 4Soothing and aftercare guidance
Time: A smile-line session takes about 30–45 minutes.
Recovery & aftercare
- Little to no downtime; most people return to daily activities the same day.
- Temporary redness, mild swelling or warmth around the mouth and cheek 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 around the smile lines and cheek, eased by cooling and vibration. Afterwards mild redness or warmth that usually settles within hours. Most people return to daily activities the same day.
DAY 1-3 Settling
Any redness, mild swelling or warmth around the mouth and cheek generally eases. Makeup and normal skincare can usually resume as advised.
WEEK 2-8 Early firming
Early firming of the cheek that supports the fold may be noticeable. This varies from person to person.
2-6 MONTHS Collagen renewal
As collagen renews, a gradual firmness around the smile lines becomes more noticeable for many people, and early folds may look softer. This is typically when results are assessed. (Results vary by individual.)
~6 MONTHS Review
Your doctor reviews the outcome and, if appropriate, discusses whether to combine with filler or repeat treatment.
Sessions & results
A single session per cycle is common, with changes appearing gradually over about 2–6 months as collagen renews. Whether to combine with filler is discussed at consultation. (Results vary by individual.)
How it compares
These are all non-invasive, energy-based lifting 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 depth | Broad heating of the dermis | Up to ~4.5 mm — reaches the SMAS | Mid-dermis (~1.5 mm) |
| Often chosen for | Firming the cheek around the fold | Deeper lift of the mid-face that supports the fold | Firming the skin around early folds |
| Sensation | Warm heating cycles with cooling | Brief warmth at each point | Warmth with integrated cooling |
| Downtime | Little to none | Little to none | Little to none |
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 warm feeling, or mild swelling around the mouth and cheek
- Tenderness in treated areas for a short time
- Occasionally small areas of bruising
- Rarely, temporary changes in skin sensation, or surface marks, that typically settle
When to take extra care
- Pregnancy or breastfeeding — let us know at consultation
- A pacemaker or other implanted electronic or electrical device — important for radiofrequency, tell your doctor
- Active skin infection, inflammation or open lesions in the treatment area
- Recent nasolabial fillers or threads in the area — tell your doctor so timing can be planned
- A history of keloid or difficulty with wound healing
Thermage firms the skin and does not fill a static fold; a deep nasolabial fold may be better addressed with filler or a combined plan. 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.
Firming, planned with filler in mind
Because Thermage firms rather than fills, the doctor advises whether firming, filler or a combination fits the fold you want to address.
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 zones treated. Please consult us for a personalized quote.
Frequently asked questions
It firms the cheek skin around the fold rather than filling it, which may soften the appearance of early smile lines; a deep static fold is often better addressed with filler or a combined plan. (Results vary by individual.)
Firming and filling work differently — Thermage tightens the supporting skin, filler adds volume in the fold. We advise, or combine both, after assessing your face.
Most people feel brief heat with each pulse, eased by cooling and vibration. Comfort options are discussed at consultation. (Results vary by individual.)
Some firming can be felt early, with changes continuing over about 2–6 months as collagen renews. (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.
+Dermal filler
Where a static fold needs volume, filler adds it directly — a different aim from firming, and the two are often combined. Decided at consultation.
+Smile Line Sofwave
Mid-dermis ultrasound firms the skin around the fold in a different way and can complement radiofrequency — sequencing decided by your doctor.
+QD Full Face Thermage FLX
When more than the smile lines shows laxity, a full-face plan may suit better — decided at consultation.
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.