Monopolar Radio Frequency (RF), the gold standard of treatments designed to tighten skin in a noninvasive fashion, can both reduce skin sagging and significantly improve skin quality. In its monopolar form, RF is applied to the target area by a dedicated hand-piece, while a grounding pad is applied to the body at a distance. The delivered RF skips the epidermis and leads to selective bulk tissue heating in the dermis, which induces both immediate collagen contraction and delayed collagen synthesis.