According to the public health network, infrared lights cannot be used every day. Because infrared light shines on the skin surface, part of it will be reflected and the other part will even be absorbed by the skin. However, long-term radiation will cause pigmentation of the skin, and even skin spots and other health problems in severe cases. Therefore, regular irradiation is not allowed, and the time of each irradiation should not be too long, not more than half an hour.