It's not an IQ tax. Yuruyi beauty instrument has effect certification. According to the report of 985 University Research Institute, the RF function of Peiji can effectively promote the proliferation of fibroblasts, secrete collagen, and make the skin more elastic and firm. And through the American VISIA facial image analyzer, German ultrasonic skin imager, Danish multifunctional skin detector and other authoritative imported testing instruments. The effect data is true and reliable.