The source is an excerpt from a certification guide promoting an online training course for practitioners in the beauty and aesthetics industry. Specifically, it details the benefits and curriculum of a combined Ultrasonic Fat Cavitation and Radiofrequency (RF) Skin Tightening Certification, which trains individuals in two popular non-invasive body contouring treatments. The text explains that these treatments, which safely reduce fat and tighten skin without surgery, are experiencing rapid growth and offer a high-profit business opportunity for certified professionals. The guide emphasises that accredited training is essential for safe and effective practice, covering topics from the science behind the technology to client consultation and business strategy.