Women drink on the face because the body’s acetaldehyde dehydrogenase is low. Generally speaking, the metabolism of alcohol in the human body mainly through the ethanol dehydrogenase and acetaldehyde dehydrogenase two enzymes, when the acetaldehyde dehydrogenase is low, the metabolism product of alcohol acetaldehyde will be accumulated in the blood, resulting in too high a concentration of acetaldehyde can make the body of the capillaries, veins, and arteries are dilated, which leads to the face of the symptoms of the face of the redness on the face. This condition generally means that the metabolism of ethanol to acetaldehyde can be very difficult to continue to metabolize, leading to increased concentrations of acetaldehyde, which can lead to acetaldehyde poisoning or cause a long-term reaction with an increased incidence of cancer.