Very short bursts of RF energy are directed at the skin. Numbing cream may be applied. The machine’s handpiece is rolled across the skin in a crisscross motion whilst delivering short pulses of energy. It performs what is known as ‘controlled injury’. During the treatment your skin may feel warm and you may experience a small amount of discomfort. Mild swelling similar to sunburn may be observed. This will vary from patient to patient. Those with sensitive skin may notice redness more.