When the weather is cold, why does the face feel a little hot and may turn red?

The main reason is the thin stratum corneum. Generally speaking, heat will dilate blood vessels in the skin, leading to facial flushing. Although cold can make blood vessels contract, when the temperature rises, blood vessels will rebound and expand, causing blushing. However, there are still some people who may blush because of the abnormal expansion of blood vessels at extremely cold temperatures. Suggestion: We must do a good job in preventing sandstorms in winter, and use isolation cream at ordinary times to avoid the cold environment and sharp changes in temperature in winter. Pay attention to skin moisturizing and keeping warm. In a particularly dry and hot room, if your face feels dry, you should replenish water in time. Warm water should be the main way to wash your face. Scarves or masks can be used outside to prevent cold air from directly attacking the face, avoid excessive humidity difference and temperature difference, and make the dilated capillaries contract rapidly when they are cold, forming red blood. People with a history of facial frostbite should always wipe their faces in winter to promote blood circulation. The face is red and hot. It is recommended in a particularly dry and hot room. If your face feels dry, you should replenish water in time and wash your face with warm water. Scarves or masks can be used outside to prevent cold air from directly attacking the face, avoid excessive humidity difference and temperature difference, and make the dilated capillaries contract rapidly when they are cold, forming red blood. People with a history of facial frostbite should always wipe their faces in winter to promote blood circulation. In terms of diet, eat less foods that will increase vasodilation, such as coffee, tea, cola and other caffeinated foods. Suggestion: Supplementing some vitamin B can also help nerve repair and soothe the nerves. In addition, avoid contact with sunlight, wine and spicy food, and be less angry, nervous or overly excited.