Radio frequency is not the same as laser. Radio frequency(RF) usually refers to oscillations in electrical circuits. Aesthetic treatments reportedly use non-ablative(RF) energy in short, intense pulses that oscillate through the skin to heat targeted tissue. Radio frequency(RF) is often used to reportedly tighten the skin. The (RF) energy penetrates the skin and stimulates the contraction of collagen and the production of new collagen for skin tightening. Radio frequency devices use a variety of delivery systems and penetrate to varying depths.