When the RF current passes through the dermis of the skin tissue, the charged particles in the skin cells will create resistance to the RF waves, thus generating an oscillation in the rapidly changing electromagnetic field that triggers heat. When the heat in the dermis accumulates to a certain level, it destroys the existing collagen triple helix structure and promotes the molecules to tighten, while the fibroblasts responsible for producing collagen molecules generate new collagen molecules, increasing the total amount of collagen in the dermis under long-term use to achieve the effect of wrinkle removal and tightening.