The red face of the plateau is mainly caused by two reasons: First, the polycythemia that occurs when you stay at high altitude for a longer period of time, as long as you return to a lower altitude for a period of time, the red face will naturally improve. Second, sun exposure, wind and sun exposure caused by the expansion of facial capillaries, caused by the red face, need to use special means, such as strong pulse laser, dye laser, coagulation of red blood in order to get treatment, to be through 3-5 times the treatment to achieve very good results. If you want to achieve the effect of redness through topical medication, or by applying a mask, it is almost impossible, so you need to treat it by means of medical beauty.