It is difficult to eliminate red blood on the face, and there are only two common methods. First, the use of photorejuvenation and other medical photoelectric treatment; second, adhere to the cold water wash face. The red blood cells are small blood vessels that expand and coagulate and are located in the dermis of the skin, while between the outside air and the dermis, there is also an epidermal layer with about several dozen layers of cells, so it is difficult to act on the red blood cells through so many layers of epidermal cells simply by external use. The only way to get the most out of this treatment is to use ultra-pulsed light like photon to the dermis, so that the small dilated blood vessels can shrink and coagulate, generally once a month, 4-6 times with more obvious results. Insist on washing your face with cold water, which also has a certain effect of shrinking blood vessels, you need to insist on more than two years to have a more obvious effect, and pay attention to concise skin care during treatment.