Everyone is like this, but some people are heavier and some people are lighter. When the air is dry in winter, the old skin will automatically fall off and form dander after skin metabolism. In summer, the air is humid and the performance is not obvious. In fact, this is a very normal phenomenon. Frequent bathing, drinking more water and increasing indoor humidity with humidifier all have certain effects. In addition, you can also apply some moisturizing milk and olive oil to relieve dryness.