How to do if the baby's face turns red in winter?

"Baby blushing" is a common seasonal phenomenon, which is mainly caused by the climatic characteristics of some special seasons, such as dry winter and low temperature. Because the temperature in winter is low, the temperature difference between indoor and outdoor is large, the stimulation of cold air and the change of hot and cold make the baby's skin capillaries contract and expand repeatedly, and the skin blood vessels lose good elasticity and expand abnormally, which is reflected on the cheeks and nose, so the baby's face will be red.