Photodynamic Physiotherapy converts light energy into biological energy, effectively acting on the mitochondria of the subcutaneous tissue cells. This produces a highly efficient photochemical biological reaction: an enzymatic reaction. An enzymatic reaction activates cytochrome oxidase C in mitochondria, and generates more energy to accelerate the synthesis of DNA and RNA, and promote the formation of a large amount of collagen and fibrous tissue, thereby repairing damaged skin cells. It also strengthens the skin through a broadband spectrum, promotes the formation of fibroblasts, and phagocytizes the pigment cells, gradually whitening the complexion, and making dull skin become transparent and radiant. Photodynamic physiotherapy utilizes specific wavelengths of light to cause the vibration of molecules to produce thermal effects, promote the absorption of various elements in the body and unblock the microcirculation channels.