High-Intensity Focused Ultrasound (HIFU) is a non-invasive cosmetic treatment that utilizes focused ultrasound energy to lift and tighten the skin. By delivering ultrasound energy to specific depths of the skin, HIFU stimulates collagen production without damaging the surface, resulting in a firmer, more youthful appearance. It is particularly popular for facial rejuvenation and body contouring, providing an effective alternative to surgical procedures.