ONDA vs Ultherapy: Which Is Better for Facial Contouring?
If you are visiting Busan and want a slimmer, more defined lower face without surgery, two names come up again and again: ONDA and Ultherapy. Both are non-invasive, both have little or no downtime, and both can be done in a single appointment during a short trip. They work in very different ways, though, so the right choice depends on what is actually making your jawline look soft.
Quick answer: ONDA uses microwave energy to heat the fat layer and firm the skin, so it suits a full lower face, soft jawline or double chin caused mainly by fat. Ultherapy uses imaging-guided focused ultrasound to tighten the deeper SMAS layer, so it suits sagging cheeks, jowls and brows. If fullness is the problem, ONDA is usually the better fit; if drooping is the problem, Ultherapy is. When both are present, the two are often combined or paired with other devices.
How ONDA and Ultherapy work
ONDA: microwave energy for fat and firmness
ONDA is made by DEKA, an Italian medical device company. It uses microwave energy (which the maker calls Coolwaves) designed to concentrate in the fat layer beneath the skin. The heat can reduce fat cells over the following weeks while also warming connective tissue to stimulate collagen. A cooling system protects the skin surface, which keeps treatment comfortable.
Ultherapy: imaging-guided focused ultrasound
Ultherapy (often called Ulthera) is a micro-focused ultrasound device from Merz Aesthetics. Its key feature is built-in imaging: the practitioner sees the skin layers on screen and places lines of energy at set depths, including the SMAS, the supportive layer tightened in a surgical facelift. Tiny heated points contract the tissue and trigger collagen renewal, so the lift builds gradually.
Contouring vs lifting: which problem do you have?
"Facial contouring" can mean two different things, and this is where most of the confusion comes from.
- Too much volume: a round or heavy lower face, fullness along the jaw, or a double chin made of soft fat. Reducing that fat sharpens the outline. This is ONDA's territory.
- Too little support: cheeks that have dropped, jowls forming at the jawline, or brows that sit lower than they used to. Lifting the deeper tissue restores the outline. This is Ultherapy's territory.
- A wide jaw from muscle: if the width comes from a strong chewing muscle, neither device is the main answer; jaw Botox is usually more effective.
A simple self-check: if pinching under your jaw grabs a soft roll, fat is likely playing a part. If gently pushing your cheeks upwards with your fingertips makes your jawline look much sharper, sagging is the bigger factor. A doctor will confirm this by examining fat thickness, skin laxity and bone structure.
Who each treatment suits
ONDA tends to suit you if
- Your lower face looks full, with a soft jawline or a double chin.
- You have mild fat and mild skin laxity together.
- You want slimming without injections or surgery.
- You would also like to treat body areas such as the upper arms.
Ultherapy tends to suit you if
- Your cheeks, jowls or brows have started to drop.
- Your face is not especially full, but the outline has softened with age.
- You prefer one session a year rather than a monthly series.
When neither is ideal
If your face is already slim and hollow, heating the fat layer could make it look more tired, and restoring volume may matter more. If you have a pacemaker or other implanted electronic device, metal implants in the area, or you are pregnant, energy devices are generally avoided.
Cost of ONDA and Ultherapy in Busan
ONDA is planned by total energy in joules, while Ultherapy is planned by the number of lines (shots). Example prices at a clinic in Seomyeon:
- ONDA 60,000 J : from KRW 390,000
- ONDA 100,000 J : from KRW 490,000
- ONDA 60,000 J + Shurink Universe 300 shots : from KRW 429,000
- Ultherapy 300 lines + full-face skin Botox : from KRW 790,000
- Ultherapy 600 lines + full-face skin Botox : from KRW 1,690,000
Prices checked October 2026. They exclude 10% VAT, which is added at payment, and prices change often, so confirm the current figure when you book. ONDA is usually the lower-cost option per session, but it is often recommended as a monthly series, while Ultherapy is usually a single session repeated every 6–12 months. Compare the cost of the whole plan, not just one visit.
What the treatment day looks like
- Numbing: both use numbing cream for about 30 minutes.
- Treatment time: both take about 30–60 minutes depending on the area.
- Sensation: ONDA feels like deep warmth with brief hot spots; Ultherapy feels like prickly, warm pulses, strongest over bone along the jaw.
- Afterwards: mild redness or warmth settles quickly with either, and you can usually carry on sightseeing the same day.
Results and how long they last
- ONDA: fat reduction and firming develop over about 2–8 weeks. The change is usually a softening of fullness rather than a dramatic difference, and keeping a stable weight helps maintain it.
- Ultherapy: lift becomes visible over 2–3 months and usually peaks around 3–6 months.
- Duration: both typically last about 6–12 months before maintenance is needed.
Results vary from person to person. Even, well-planned energy distribution matters more than simply using the maximum dose.
Side effects and aftercare
Both are generally well tolerated when performed by a doctor. Common effects include redness, warmth and mild swelling for hours to a few days, and tenderness along the jaw. ONDA can rarely cause burns, blisters or small firm areas in the fat layer; Ultherapy can rarely cause temporary numbness, bruising, welts or nerve irritation.
- On treatment day, avoid saunas and jjimjilbang, hot baths, alcohol and strenuous exercise.
- Use sunscreen carefully for 1–2 weeks and avoid rubbing the treated area.
- Keep the skin moisturised; flying home is generally fine.
Can you combine them?
Yes, and many faces need a bit of both. Because ONDA works mainly on fat and Ultherapy works on the deeper support layer, they do not compete. Some people pair ONDA with a faster HIFU such as Shurink Universe for a lower-cost combination, or add jaw Botox when muscle contributes to width. A doctor will only suggest a combination if both fullness and sagging are genuinely present.
Frequently asked questions
Will ONDA lift my face?
ONDA firms the skin as well as targeting fat, so the jawline can look tighter, but it is not designed to lift deeper sagging. If jowls or dropped cheeks are the main concern, focused ultrasound is usually more effective.
Can Ultherapy slim a round face?
Ultherapy tightens tissue and can sharpen the outline, but it does not aim to reduce fat. A full face caused by fat usually responds better to ONDA or a fat-dissolving injection.
Which is better for a short trip?
Both have little or no downtime. Ultherapy is often a single session, which suits a one-off visit; ONDA can be done once within a trip, though a monthly series usually gives more visible change.
Not sure whether you need slimming or lifting?
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This article is for general information and does not replace a medical consultation. Suitability, results, recovery and side effects vary from person to person.
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