This phenomenon is caused by the shedding of dead skin epidermal cells, which is a normal phenomenon. It often happens in winter because the temperature in winter is low and dry, which makes the blood run relatively slowly and brings less energy, nutrition and water to cells. Therefore, we generally drink less water in winter, and the food we eat in winter is greasy and heavy, which leads to strong oil secretion. Drying accelerates the evaporation of water on the skin surface and easily leads to the loss of water on the skin. There are two most direct ways to treat the symptoms: one is to wash your face with warm water, and rub your face like a bath when washing your face (don't use too much force to avoid rubbing it); The second is to use exfoliating products and use them after cleansing. The principle is similar to the former, and they are all exfoliated. Be sure to use moisturizing skin care products after washing. It should be noted that these two methods should not be too frequent, just once or twice a week. Indirect but radical solutions are: drink more water, eat more fruits and vegetables, eat less greasy food, smoke less, and stop staying up late! If these are too slow, you can take some vitamin supplements, and the dosage can be according to the instructions or doctor's advice. Need to remind again that smoking and staying up late are the biggest killers of the skin, so try to avoid them. Friends who have to face the computer screen for a long time, remember to wear sunscreen or isolate cosmetics. If possible, you can take anti-radiation health products such as spirulina tablets (I tried it during my graduation thesis, and the effect is very good). Don't forget to wash your face when you leave the computer to rest:-)