RF uses radio frequency energy waves to heat the collagen under the skin. These waves flow between electrodes positioned on the surface of the skin. Heat flows through the layers of skin with less impedance and stimulates the synthesis of new collagen and elastin thereby tightening the skin.
2. The laser uses a highly focussed light beam, which converts into thermal energy (heat). It breaks down and remodels the scars, and over a period, they begin to heal.