Unlike conventional ultrasound (longitudinal waves), Tuneliner uses transverse waves (3D ultrasound that combines longitudinal and transverse waves). This special ultrasound energy barely affects the skin surface or other tissues, and selectively vibrates and breaks down only fat cell membranes. The broken-down fat cells are naturally eliminated through the body's metabolism. 2. Key effects and benefits Fat reduction & contouring: Excellent for double chins and restoring a sagging jawline. Minimal pain: Almost painless — you only feel gentle warmth, so the treatment is comfortable even without numbing cream. Treatment time: Varies by area, but usually a quick and easy 10–20 minutes. No downtime: Little to no bruising, swelling or redness, so you can return to daily life right after. 3. Difference from Tune Laser (radiofrequency) Tuneliner (ultrasound): Breaks down fat cells to reduce volume and refine contours (a liposuction-like effect) Tune Face, etc. (radiofrequency): Regenerates collagen to lift and firm the skin (tightening effect)