HIFU treatment, or High-Intensity Focused Ultrasound, is a non-invasive procedure that tightens and lifts the skin using focused ultrasound energy. By stimulating collagen production, it helps to improve skin elasticity and reduce sagging, resulting in a more youthful appearance. This treatment is often referred to as a "non-surgical facelift" due to its ability to rejuvenate the skin without the need for surgery or downtime.