Smile Line Sofwavein Gangnam, Seoul
Smile Line Sofwave firms the skin around the nasolabial folds (the smile lines) and the mid-to-lower cheek, where laxity can deepen the fold. Mid-dermis ultrasound at about 1.5 mm prompts collagen renewal to support the skin here; 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 20–30 minutes with little downtime. (Results vary by individual.)
Who it’s for
- Softening skin around the smile lines from early laxity
- People who want to firm the cheek that supports the fold
- Those who prefer an energy-based option over filler, or to combine both
- Anyone who prefers little downtime
Sofwave 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
Around the smile lines, parallel ultrasound beams warm the mid-dermis of the cheek at about 1.5 mm, prompting collagen renewal so the skin that supports the fold may firm over the following weeks. Because it firms rather than fills, it is often planned alongside — or instead of — filler depending on the fold. Integrated cooling protects the surface. Sofwave is cleared by the US FDA for improving the appearance of facial fine lines and wrinkles.
THE MECHANISM, STEP BY STEP
01Parallel beams to the mid-dermis
Sofwave sends parallel ultrasound beams to a controlled depth of about 1.5 mm — the mid-dermis — rather than the deeper SMAS layer.
02Fractional zones of warmth
The beams create small, evenly spaced zones of warmth in the dermis, leaving surrounding tissue to support renewal.
03It firms rather than fills
Sofwave supports the skin around the fold by prompting collagen renewal; it does not add volume inside a static fold the way a filler does.
04Collagen and elastin renew
The warmth prompts the skin’s own collagen and elastin renewal over the following weeks, so changes are gradual rather than immediate.
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 mapping around the smile lines
- 3Ultrasound delivery with surface cooling
- 4Soothing and aftercare guidance
Time: A smile-line session takes about 20–30 minutes.
Recovery & aftercare
- Little to no downtime; most people return to daily activities the same day.
- Temporary redness or mild swelling 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
Warmth as the ultrasound is delivered around the smile lines and cheek, eased by the integrated cooling; afterwards mild redness that usually settles within hours. Most people return to daily activities the same day.
DAY 1-3 Settling
Any redness or mild swelling around the mouth and cheek generally eases. Makeup and normal skincare can usually resume as advised.
WEEK 2-6 Early change
Some people notice the cheek that supports the fold feeling a little firmer. This varies from person to person.
6-12 WEEKS Collagen renewal
As new collagen and elastin form, 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 is common, with changes appearing gradually over about 6–12 weeks 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 | Sofwave | Ultherapy PRIME | Thermage FLX |
|---|---|---|---|
| Energy | Ultrasound (SUMS parallel beams) | Focused ultrasound (imaging-guided) | Monopolar radiofrequency |
| Main depth | Mid-dermis (~1.5 mm) | Up to ~4.5 mm — reaches the SMAS | Broad heating of the dermis |
| Often chosen for | Firming the skin around early folds | Deeper lift of the mid-face that supports the fold | Overall tightening of cheek skin |
| Sensation | Warmth with integrated cooling | Brief warmth at each point | Warm heating cycles with 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 or a flushed feeling
- Mild swelling or tenderness around the mouth and cheek for a short time
- Occasionally small areas of bruising
- Rarely, temporary changes in skin sensation that typically settle
When to take extra care
- Pregnancy or breastfeeding — let us know at consultation
- Active skin infection, inflammation or open lesions in the treatment area
- Implanted electrical devices, or metal implants in the area — tell your doctor
- Recent nasolabial fillers, threads or other energy treatments — tell your doctor so timing can be planned
- A history of keloid or difficulty with wound healing
Sofwave 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 Sofwave 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 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 — Sofwave supports the skin, filler adds volume in the fold. We advise, or combine both, after assessing your face.
Most people feel warmth eased by the built-in cooling. Comfort options are discussed at consultation. (Results vary by individual.)
Changes appear gradually over about 6–12 weeks as collagen renews. (Results vary by individual.)
Little to none. Temporary redness may occur and usually settles the same day.
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 Thermage FLX
Radiofrequency tightening firms the cheek skin differently and can be considered alongside ultrasound — sequencing decided by your doctor.
+QD Full Face Sofwave
When more than the smile lines shows early 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.