HIFU (High-Intensity Focused Ultrasound) is a non-surgical facelift treatment that targets deep layers of the skin to lift, tone, and tighten without needles or downtime. Using focused ultrasound energy, HIFU stimulates collagen production at the SMAS (Superficial Musculo-Aponeurotic System) layer—the same layer targeted in surgical facelifts. At Dr. Lina Skin Clinic, our Full Face HIFU treatment is designed to redefine contours, reduce sagging, and smooth out fine lines for a firmer, more youthful appearance.