In winter, it is very necessary to do a good job of preventing cold and keeping warm. As soon as we take to the streets in winter, the chill always permeates our whole body quickly. Some citizens wrapped themselves up and put on more clothes to keep warm. Although this can play a certain role in keeping out the cold, it is inevitable that they will catch a cold and crack their lips. Maybe after you master the following skills, you may have a more comfortable winter. Don't wash your face too often. Try to reduce the number of times you wash your face in winter. Don't use overheated water when washing your face. If the water temperature is too high, on the one hand, it will directly burn the skin, on the other hand, it will wash off the oil on the face, which has no protective effect on the skin and is easy to cause chapped skin. In addition, it is best to go out half an hour after washing your face, which can reduce the damage of cold air to facial skin. In winter, the lips are particularly prone to chapping. Some people like to lick their lips with their tongues and keep their lips moist with saliva, but the effect is just the opposite, and the more they lick, the drier they get. This is because saliva contains viscous amylase. After the saliva water left on the lips evaporates, amylase will remain on the lips like a layer of paste, which is more likely to cause dry lips and even rupture and bleeding. To protect your lips in winter, it is best to use lip balm. Shampoo time is particular. When the temperature is high in winter, don't wash your hair before going to bed, because after washing your hair with hot water, the capillaries on your scalp expand and your body radiates more heat to the surrounding area. At the same time, the hair is wet after washing, and the evaporation of water will take away a lot of heat. Sleeping at this time is very likely to cause a cold. Don't be too tight. It is generally believed that to keep warm in winter, you should put on more clothes and tighten up. Actually, this is a one-sided understanding. If you wear clothes too tightly, the blood circulation of the human body will be hindered to some extent, which is not conducive to keeping warm. For example, wearing shoes and socks too tightly will lead to poor blood flow in the feet and heat can't reach the feet smoothly, but the feet feel colder, which will lead to frostbite for a long time. Rub to prevent frostbite. In cold weather, many people have frostbite on their hands, feet, faces and other places. Simple ways to treat chilblain: First, hot ironing, aiming at the affected area with a hair dryer, about 20 cm away from the skin, and slowly blowing with hot air for 5 minutes to speed up the blood circulation of the skin. The second is massage, that is, massage the affected area after heating the hand, which has a good effect on treating chilblain for a long time. In addition, always rub your hands and stamp your feet.