Radiofrequency, in the context of aesthetic applications, is a general method to heat deep skin layers by delivering High Frequency (HF) electrical current via electrodes into the body. Body cells do not interpret High Frequency electrical current as electricity but rather as an energy source. The skin layers act as resistors to the HF electrical current and depending on their resistance they heat up to varying degrees. The heat which is generated in the dermis and subcutaneous layers is responsible for the clinical outcome.