Why does the skin become so dry in winter?

Why does the skin become dry in winter?

1, exfoliation of stratum corneum

The ultraviolet rays in summer are very strong, but the brightness of ultraviolet rays in autumn has not been greatly reduced. In Shanghai, in order to resist ultraviolet rays and avoid deep skin, the stratum corneum of our skin will thicken at this time. However, as the sunshine time gradually becomes shorter, the intensity of ultraviolet rays in sunlight gradually weakens, and the glue we use to resist ultraviolet rays will gradually become thinner and return to normal thickness. Therefore, in winter, our skin will have horny powder scales falling off, and the skin will become a little rough, and there will be a feeling of rustling. At the same time, the thinning of the stratum corneum will also lead to the loss of water in the skin in winter, making the skin dry.

2, the skin metabolism is slow

Although winter is warm, it is not as violent as summer, and the intensity of ultraviolet rays is greatly reduced. However, you should be prepared for sun protection when going out, and use sunscreen before going out. Because even if the ultraviolet rays are weak in winter, the skin will be affected by ultraviolet rays when exposed to the sun for a long time. Coupled with the cold weather in winter, our body's metabolic rate will also slow down, causing skin to be burned by ultraviolet rays beyond repair. As a result, the skin is prone to pigmentation, and the skin will become more sensitive and dry in winter.

3. Decreased sebum secretion

Our skin contains oil and wax, which will melt when heated. So in spring and summer, the skin secretes oil, and the wax on the skin melts and becomes a natural skin protective layer, which can help the skin lock in moisture. When the weather is cold and dry in winter, the oil and wax secreted by our skin will be reduced, and this substance will be semi-condensed, and the natural protective film of this skin will be gone. Coupled with the fact that winter is dry, our skin will become drier and tighter.

4. Sensitive skin

The average person's skin produces more oil in summer than in winter, so the skin moisture in summer is locked by this layer of oil on the face to prevent the skin from drying. In winter, skin oil secretion decreases, cuticle becomes thinner and skin becomes more sensitive. When the weather is dry in winter, the friction between clothes and hair will generate static electricity, which will irritate the skin and make it sensitive.

Therefore, the skin is moist and smooth in spring and summer, but it becomes dry in winter for a reason. Be sure to replenish water and care for the skin in time according to these reasons. In order to avoid skin damage due to dryness.