First published: 2022-11-15 / 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).
Skin aging first becomes visible in the epidermis. It becomes dry, loses elasticity, and wrinkles appear. However, there are limitations to only caring for the surface. We have summarized the principle of why ultrasound lifting targets the deep layers of the skin.
Why you shouldn't only look at the surface
Visible changes begin in the epidermis, but the areas responsible for elasticity are the elastic fibers and SMAS layer deep within the dermis. As components like collagen decrease and cell regeneration slows down, sagging naturally appears.
Therefore, an approach that looks at the internal structure of the skin rather than just dealing with what is visible is desirable.
Season is also a variable
When the wind blows and it gets colder, the skin becomes drier, and moisture can easily escape due to temperature differences. As seasonal factors and aging overlap, more people seek elasticity care in the fall.
- Roughness due to dryness
- Moisture loss due to temperature differences
- Decreased elasticity due to age
Depth reached by ultrasound
A characteristic of ultrasound lifting is that it concentrates energy in layers that are difficult for general lasers to penetrate. The key is to concentrate ultrasound energy at a depth of approximately 1.5 to 4.5mm.
When high-intensity focused ultrasound (HIFU) energy is delivered to the dermis and SMAS layer, thermal coagulation points are created, and as the tissue coagulates and tightens, you can expect a lifting sensation.
This method is more natural because it does not involve artificially pulling the skin by inserting foreign substances like threads.
Why cartridges are divided by area
With two ultrasound modes and various cartridges, it can be applied to suit different areas. Customized treatment is possible even for narrow, curved areas or thin layers.
- Cartridge selection tailored to the depth of each area
- Applicable even to narrow or curved areas
- A method that delivers uniformly in a line shape, not just a dot shape
Ask what depth is right for your sagging area
Procedure time and pain
The procedure time itself is short and the pain is relatively low, which can reduce the burden for those who have been very worried about this aspect. It is also known to be applicable to those with thick skin.
Conclusion
As there are various cartridges, you need to personally confirm the appropriate application level for you. The stage at which to proceed varies depending on your condition, and results may differ for each individual, so it is recommended to first determine your stage through consultation.
Authored by: Dr. Choi Byeong-geun (Chief Director of SHINE U Clinic Konkuk / Member of the Korean Society for Laser, Dermatology and Hair, the Korean Academy of Aesthetic Plastic Surgery and Laser Medicine, the Korean Academy of Fillers, etc.) Last reviewed: 2026-05-28
This article is for general information about procedures and does not replace diagnosis or treatment. The suitability and results of the procedure may vary for each individual.