Quick answer: Ultherapy uses micro-focused ultrasound to heat small points of tissue at set depths, including the SMAS layer that facelift surgeons tighten. Heating that deeper support layer is what produces a lift rather than just surface tightening. Results build over two to three months, typically last around a year, and the treatment has little downtime, though it can be uncomfortable.
What is the SMAS layer?
SMAS stands for superficial musculoaponeurotic system. It is a thin, fibrous sheet that sits under the skin and fat and connects to the facial muscles. As we age it loosens and descends, which is a major reason the jawline softens, jowls form and the lower face looks heavier. In a surgical facelift, the surgeon lifts and tightens this layer. Ultherapy is one of the few non-surgical treatments that can reach it.
How Ultherapy works
Ultherapy delivers micro-focused ultrasound with visualisation (MFU-V). The practitioner sees an ultrasound image of the tissue on screen, then places tiny thermal coagulation points at a fixed depth. Different transducers target different layers:
- 4.5 mm: the SMAS and the deep connective tissue, for lifting
- 3.0 mm: the deep dermis, for firmness
- 1.5 mm: the superficial dermis, for fine lines and texture
Each point heats to roughly 60 to 70°C, which causes the collagen there to contract and then triggers new collagen production over the following months. The skin surface itself is left intact, which is why there is no wound.
Why depth matters
Radiofrequency devices such as Thermage heat a broad volume of the dermis and are excellent for tightening and smoothing skin. They do not reliably reach the SMAS. Because Ultherapy can place energy precisely at 4.5 mm, it adds a lifting effect on the jawline, brows and under the chin. Many clinics in Apgujeong combine the two: Ultherapy for structure, RF for the skin surface.
Who is a good candidate?
- Early to moderate sagging of the brows, cheeks, jawline or neck
- People in their 30s to 60s who are not ready for surgery
- Those who want a gradual, natural change with minimal downtime
It is less suitable for very thin faces with little fat (deep passes can make them look hollow), for heavy skin laxity that needs surgery, or for anyone with open wounds, active infection or certain implants in the treatment area. Tell the doctor about fillers and threads, which affect how energy is placed.
Ultherapy, Ultherapy Prime and HIFU devices
Ultherapy is a specific brand made by Merz. Ultherapy Prime is the newer platform with an updated imaging display and faster delivery. Korean clinics also offer other high-intensity focused ultrasound (HIFU) devices, such as Shurink Universe or Ultraformer, which use similar principles but do not have the same real-time imaging. They are usually cheaper. Ask which device you are getting, and if you are paying for Ultherapy, ask to see the genuine transducer and its counter.
What the treatment feels like
Most people feel a deep, sharp heat or a tapping sensation over bony areas such as the jawline and forehead. Clinics use numbing cream and some offer painkillers or sedation. A full face and neck usually takes 60 to 90 minutes.
Downtime and side effects
- Redness for a few hours
- Swelling and tenderness, especially along the jaw, for a few days
- Small bruises or welts, usually gone within a week
- Rarely, temporary numbness or nerve irritation lasting a few weeks
Most people go back to normal activities the same day and can fly the next day.
When do results appear and how long do they last?
A slight lift may be visible straight away, but the real change develops over two to three months and can keep improving for up to six. Results commonly last around a year. Many patients maintain them with a lighter session every 12 to 18 months.
How is Ultherapy priced in Korea?
Korean clinics usually price Ultherapy by the number of lines (shots), for example 100, 300 or 600 lines, with eye and neck areas sometimes listed separately. Price depends on the device generation, the number of lines, the areas and whether a doctor performs the treatment. Compare quotes on the same line count and check whether VAT is included. See our
price guide for current KRW ranges.
Frequently asked questions
Is Ultherapy safe?
It is cleared by the US FDA for lifting the brow, under the chin and the neck, and for improving lines on the chest. Serious complications are rare when it is performed correctly.
Can I combine Ultherapy with Botox or fillers?
Yes. Many clinics do energy treatments first and injections afterwards, sometimes on the same day.
How is it different from a facelift?
A facelift physically repositions tissue and removes excess skin. Ultherapy gives a smaller, gradual lift without incisions. It cannot replace surgery for significant sagging.
Read more on our
Ultherapy treatment page.
This article is general information and does not replace a consultation with a doctor. Last reviewed: October 2026.
