Ultherapy PRIME® uses micro-focused ultrasound (MFU-V) to deliver energy to a focal point in the deep tissue layers rather than the skin surface, stimulating the SMAS layer. When the ultrasound energy converges at a single point, the temperature at that spot rises locally, creating micro-thermal coagulation points (small areas of thermal stimulation). This stimulation triggers the body’s collagen regeneration process.
At this time, the temperature reached at the focal point is generally about 60-70°C. In this temperature range, existing collagen fibers contract, and then new collagen and elastic fibers are rearranged. An important feature is that it passes over the skin surface (epidermis) without touching it, acting selectively only on the deep layers, allowing treatment of deep layers without incisions.
Another feature of Ultherapy PRIME® is that it delivers energy while checking the layer structure of the treatment area in real time using ultrasound imaging (Visualization). Because you can see what tissue is at what depth while aiming, it helps concentrate stimulation on the desired layer.



