The electrical currents used for aesthetic and physiotherapy radiofrequency treatments (300 kHz to 5 GHz) happen to fall within the so called "radio frequency spectrum", i.e. the frequencies used for radio communications (3 kHz to 300 GHz)…
Radio frequency skin tightening dangers and safety: all you need to know
Radiofrequency treatment is based on electrically heating the skin and can be anything from extremely safe all the way to very unsafe (and with a lot of adverse reactions), depending on type of radiofrequency used, equipment and therapist experience/training. If the pain threshold rule is adhered, deep-acting, high-power radiofrequency provided in a continuous moving fashion, should be ~99.5% safe, or better…

