The face is very red when it is hot is a manifestation of skin sensitivity, the specific manifestation of the skin in contact with the heat after the redness, scalding, swelling, this situation occurs in the fall and winter, suggesting that the skin barrier is damaged a manifestation of the skin barrier should be actively repair the skin barrier. Commonly used methods include yellow light irradiation, oral compound glycyrrhizin tablets and so on. If there is itching, anti-allergic drugs such as cetirizine tablets can be used, and Chinese patent medicines such as white peony total glycosides and yu ping feng capsule can also be used experimentally. In life, you can externally use moisturizing creams containing ceramides to repair the skin barrier, try to use less facial cleanser, less masks, and insist on cleansing with warm and cool water.