HIFU in Korea is a family of focused ultrasound machines rather than one treatment, and the device name shapes how a session is planned. Ultherapy from Merz Aesthetics pairs its transducers with an on-screen ultrasound image, so the operator sees tissue layers before each pass. Shurink Universe from Classys (sold abroad as Ultraformer MPT), V-Ro from Hironic and Sofwave share the heating principle but differ in cartridge depths, beam shape and add-on energy. Sessions usually run 30 to 60 minutes after numbing cream, and most people return to ordinary plans the same day with some swelling or tenderness.
Merz Aesthetics · Ultherapy PrimeGuide
What a focused ultrasound pulse does under the skin
Diagnostic ultrasound only makes pictures; therapeutic ultrasound packs far more energy into a tiny focal zone that heats quickly while nearby layers stay largely untouched. In a 2014 review in Research and Reports in Focused Ultrasound, Day described how a concave disk inside the transducer focuses the beam at a set depth, causing collagen fibers to contract and later triggering fresh collagen production.
The same review explains that depth and heating rate depend on frequency and energy delivery, which is why each transducer carries a fixed depth. For Ultherapy Prime, the facts on file describe heating of roughly 65 to 70 degrees Celsius per point, aimed at the SMAS, the fibrous layer a surgical facelift also tightens.
Guide
Ultherapy, Shurink Universe, V-Ro and Sofwave side by side
Every device below is focused ultrasound, but the hardware differs. The clearest dividing line is imaging: Ultherapy and its newer Prime version show a live ultrasound view, and Day noted that microfocused ultrasound with visualization can be applied with a high degree of precision. For other machines, ask how depth and skin contact are confirmed.
Beam shape is the second difference. Most HIFU devices focus to a point, while Sofwave fires seven parallel cylindrical beams into the dermis at about 1.5 mm and does not reach the SMAS. V-Ro adds secondary radiofrequency, with ultrasound as its main energy.
| Device | Maker | Depths listed | Beam and guidance |
|---|---|---|---|
| Ultherapy / Ultherapy Prime | Merz Aesthetics | 1.5, 3.0, 4.5 mm | Point focus, live imaging |
| Shurink Universe (Ultraformer MPT) | Classys | 1.5, 2.0, 3.0, 4.5 mm plus boosters | Point focus, MP and Normal modes |
| V-Ro | Hironic | 1.5, 2.0, 3.0, 4.5 mm | Point focus plus secondary radiofrequency |
| Sofwave | Sofwave Medical | About 1.5 mm | Seven parallel cylindrical beams |
Guide
Why transducer depth matters more than the brand
A plan is really a list of depths per zone. The 4.5 mm setting reaches the SMAS along the jaw and lower cheek, 3.0 mm sits in the deeper dermis, and 1.5 mm or 2.0 mm treats finer surface laxity. Heavy jowls and crepey under-eye skin need different mixes.
A 2021 case series by Chaves Bellote and Miot in Clinical, Cosmetic and Investigational Dermatology used 4.5 mm and 3.0 mm Ultherapy transducers over the buccinator area in four women aged 29 to 36. At 180 days, three were rated very improved and one improved on a standard aesthetic scale. Four patients is a tiny sample, so read it as an early signal.
Guide
How a session feels and the side effects to plan for
Expect discomfort. Even after numbing cream, deeper passes feel like sharp heat or an ache over bone. In the Chaves Bellote series, all four women rated procedural pain as mild to moderate.
Day listed brief discomfort, temporary redness and swelling, and occasional bruising as the usual effects. Less often, people notice tender spots, raised welts, or temporary numbness or a weaker smile from nerve irritation near the jaw that usually settles in weeks. Surface burns are rare and are linked to poor contact or excess energy.
Guide
What to confirm before HIFU treatment in Seoul
Clinics in Seoul usually quote HIFU by lines or shots per area, listed before VAT, with 10% VAT added at payment. Get these points in writing first.
- The exact device and version, not just the word HIFU
- Which depths are used on each zone and how many lines each
- Whether cartridges are sealed and the counter is shown before starting
- Who performs the passes and who reviews the plan
- Written aftercare in a language you read
Evidence
Research behind this page
- Microfocused Ultrasound with Visualization for Face Slimming: Preliminary Results in Four WomenClinical, Cosmetic and Investigational Dermatology · 2021 · doi:10.2147/ccid.s331354
Four women treated once with 4.5 mm and 3.0 mm transducers all showed a slimmer lower face at 180 days and rated pain mild to moderate.
- Microfocused ultrasound for facial rejuvenation: current perspectivesResearch and Reports in Focused Ultrasound · 2014 · doi:10.2147/rrfu.s49900
Review of how microfocused ultrasound heats set depths, how visualization aids precision, and its usual transient side effects.
FAQ
Questions about Ultherapy in Gangnam
Is HIFU treatment in Korea the same thing as Ultherapy?
Not exactly: Ultherapy is one branded HIFU device, while HIFU is the wider category that also covers Shurink Universe, V-Ro and Sofwave. They share the heating principle but differ in imaging, available depths and beam shape, so two sessions both called HIFU can feel and target quite differently. If a clinic lists only HIFU, ask which machine and which version will be used on your face.
Can I fly home the day after HIFU in Seoul?
Usually yes, because focused ultrasound leaves no open wounds and most people feel fine to travel the next day. Swelling or tenderness along the jaw can last a few days, and cabin air may make skin feel tight and dry. Pack a gentle moisturizer and sunscreen, and avoid facial massage, hot saunas and heavy workouts for several days after the session.
How long does it take to see results from HIFU treatment Korea clinics offer?
Changes build gradually, because new collagen forms over months rather than days. Some people feel early tightness, but the contour change itself appears later; the Chaves Bellote series assessed its patients at 180 days. Results vary from person to person, depend on skin quality and age, and fade with time, so plan a later review instead of judging the result in the first week.
Who should skip HIFU treatment in Seoul?
Skip it during pregnancy, with an infection, open wound or severe acne on the area, or with metal implants in the treatment zone. Very thin faces with little fat need extra caution, and heavy sagging usually calls for surgery rather than ultrasound. Before treatment, tell the doctor about fillers, threads, blood thinners, keloid scarring and any past nerve problems in the face.
Can HIFU be combined with fillers or botulinum toxin on the same trip?
Often yes, but the treating doctor should set the order and timing. Many plans place the ultrasound session first and injections afterward, or leave a gap of a few days, so heat does not affect fresh product. Mention any filler or threads already in the face, and agree the whole schedule at the first consultation so a short trip still leaves room for checks.
How do I check the HIFU Seoul clinic uses new cartridges?
Ask to see the sealed cartridge and the line counter on the screen before the first pass. Genuine devices log the shots used, so the count should clearly drop during treatment and match the plan you agreed. If staff will not show the device, the cartridge or the counter, that is a reason to compare another clinic from the list.