HIFU (High Intensity Focused Ultrasound) uses focused ultrasound energy to target the layers of skin just below the surface. The ultrasound energy causes the tissue to heat up rapidly. Once the cells in the targeted area reach a certain temperature, they experience cellular damage. While this may seem counterintuitive, the damage actually stimulates the cells to produce more collagen — a protein that provides structure to the skin.
The increase in collagen results in tighter, firmer skin with fewer wrinkles. Since the high-frequency ultrasound beams are focused on a specific tissue site below the skin’s surface, there’s no damage to the upper layers of the skin and adjacent tissue.
HIFU may not be appropriate for everyone. In general, the procedure works best on people older than 30 with mild-to-moderate skin laxity. People with photodamaged skin or a high degree of loose skin may need several treatments before seeing results.
Benefits of HIFU
tightening sagging skin on the neck (sometimes called turkey neck)
lifting the cheeks, eyebrows, and eyelids
enhancing jawline definition
tightening of the décolletage
smoothing the skin
Study results are promising. A 2017 study involving 32 Korean people showed that HIFU significantly improved skin elasticity of the cheeks, lower abdomen, and thighs after 12 weeks.
In a larger study of 93 people, 66 percent of those treated with HIFU perceived an improvement in the appearance of their face and neck after 90 days.