XERF is a next-generation monopolar radiofrequency system that combines two frequencies — 6.78 MHz and 2 MHz — to deliver heat into the shallow, middle and deep layers of the skin, reaching the deeper structural layer addressed in a surgical lift. Wave Fit pulses and integrated cryogen cooling keep the surface comfortable, so treatment is typically performed without numbing cream. Real-time skin feedback, with three depth settings and ten intensity levels, allows your therapist to tailor each session precisely, while collagen remodelling continues gradually over the following weeks.