Red light cushion is a kind of healthy home products combined with red light physiotherapy technology, through the release of specific wavelengths of red light (usually 660-850 nanometers) acts on the human body, to achieve the effect of relieving fatigue, improve blood circulation, promote metabolism and so on. The core principle is that red light can penetrate the surface layer of the skin, and the mitochondria within the cell to produce photobiochemical reactions, thereby stimulating cell activity and accelerating tissue repair.