What is HIFU?

High-intensity focused ultrasound, also referred to as HIFU attracted attention from the medical community since 1940. It is used in a non-invasive medical procedure called “ultrasonic surgery”. Today, the instruments developed based on the principle of HIFU are very diverse and are used in various departments of clinical medicine application.

HIFU utilizes geometric focusing characteristics and can emit powerful energy. After the tissue absorbs the intensity of the high-frequency wave, it is converted into heat energy for the regional temperature to reach a value above 60 °C, and coagulation necrosis occurs within a few seconds. In addition to thermal effects, high-intensity focused ultrasound can also induce mechanical phenomena, such as cavitation, microstreaming, and radiation forces. Ultrasonic heat therapy can improve the sensitivity of tumour cells to chemotherapy and radiation therapy (radiotherapy) and enhance the therapeutic effect of chemotherapy and radiation therapy.


Medical Aesthetic Application of HIFU

Today, HIFU applies in dermatology treatments. In the medical aesthetics industry, the following treatments utilize HIFU technology:

1.High-Intensity Focused Ultrasound for Fat Reduction

Destroy the subcutaneous fat in the target area using HIFU, called ” Ultrasound Cavitation ” (due to the use of high-energy focused ultrasound ablation, it is often called “ultrasonic fat dissolving” in the market. However, this method helps reduce the number of fat cells, so it is more suitable to be called “fat reduction” than “Lipolysis”), which is different from liposuction surgery that will cause wounds. Ultrasonic fat reduction can also achieve the effect of body contouring.


2.High-Intensity Focused Ultrasound Facelift

Besides being used for fat reduction, it also works as a nonsurgical facelift. How HIFU technology works resemble concentrating sunlight with a magnifying glass, the deep skin dermis and subcutaneous tissue layer or the superficial musculoaponeurotic system (SMAS) get burned to achieve a skin-lifting effect.

The first generation of HIFU uses only three probes, focusing energy at three depths: 1.5 mm, 3.0 mm, and 4.5 mm. The depth of action can help shrink pores, stimulate collagen proliferation, and SMAS lift.

In addition to the original 1.5mm, 3.0mm, and 4.5mm probes, the second generation of HIFU has developed 8mm and 13mm for fat reduction while the third generation has a 6mm for a hypertrophic double chin or loose arms.


All in all, HIFU not only stimulates collagen proliferation and restructures the elasticity of the skin but also lifts the superficial SMAS membrane and improves facial contours. Since there are always risks involved, we recommend to consult a professional or doctor before proceeding with the course of treatment.


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