First published: 2022-08-24 / Last reviewed: 2026-05-28
This is a guide to Ultherapy PRIME compiled by Dr. Choi Byeong-geun of SHINE U Clinic Konkuk (3 minutes' walk from Konkuk Univ. Station, Exit 1).
When researching lifting procedures, you often encounter the term 'HIFU'. This is the common principle behind ultrasonic lifting procedures like Shurink and Ultherapy. However, there is rarely an explanation of what HIFU is and why it works on deep layers. In this article, we will summarize its basic principles.
What is HIFU?
HIFU stands for High Intensity Focused Ultrasound.
- It refers to waves with a frequency of 20kHz or more.
- It is designed to focus high-intensity frequencies on a single point.
It is reported that focused ultrasound technology, originally used in the medical field, has been applied to aesthetic lifting devices.
Why does it reach deep layers?
When ultrasonic energy is concentrated at a single point inside the skin, heat is generated at that point and the tissue coagulates. This is similar to how a magnifying glass collects sunlight. This is why heat can be delivered to deep layers without directly penetrating the surface.
| Depth | Target Area |
|---|---|
| 1.5mm | Upper dermis |
| 3.0mm | Lower dermis |
| 4.5mm | SMAS layer |
When energy is delivered to the SMAS layer, one of the main causes of sagging, the tissue contracts, and collagen is generated during the recovery process, which can promote elasticity.
Consult to see if the HIFU method is right for you
Why are there different tips for different areas?
Even with the same HIFU, the approach differs depending on the area. For thin and sensitive areas like around the eyes, a dedicated tip is used for precise treatment, while for wide and thick areas, it is applied at an appropriate depth. This is because the thickness and structure vary by area.
Who might consider this?
- Those who want natural elasticity restoration without excessive volume
- Those who are concerned about sagging cheeks or jawline
- Those looking for a method with quick return to daily life without incision
Since HIFU procedures directly apply strong thermal energy, it may be safer to receive treatment at a clinic that understands anatomical structures and uses genuine tips. Since each person has different bone structure, skin thickness, and stage of aging, a comprehensive diagnosis is necessary first. Results and suitability may vary from person to person.
If you are curious about HIFU lifting, feel free to ask via chat
If you are curious about radiofrequency methods, you can also see information on Tuneface or Potenza.
Authored by: Dr. Choi Byeong-geun (Chief Director of SHINE U Clinic Konkuk / Member of the Korean Academy of Laser Dermatology and Hair, the Korean Academy of Aesthetic Plastic Surgery and Laser Medicine, the Korean Academy of Filler, etc.) Last reviewed: 2026-05-28
This article provides general information about procedures and does not replace diagnosis or treatment. The suitability and results of procedures may vary from person to person.