Far infrared rays have the following functions: The carbon fiber bundle around the probe generates far-infrared rays with a wavelength range of 8 -12μm. It can penetrate deep into the skin, enhance skin vitality, activate cells, and accelerate metabolism. 2. Ultrasound has three major functions: Changing the volume and movement of each cell with precise massage function, called cell massage. It can stimulate and regulate cell membranes and increase the permeability of the epidermis. Its thermal, physical and chemical effects can increase the temperature of the deep skin by 0.5-1°C, promote skin absorption of essence, accelerate metabolism, and strengthen the tissue regeneration process. .