Why is the colder the weather, the whiter, thinner and smoother the skin?

In winter, the air is cold and the pores shrink.

UVA in ultraviolet light is reduced, so it can come back in white.

If you don't pay attention to maintenance, you won't come back when you are old.

Pay more attention to hydration and sun protection this season, and I believe we can maintain the current state.

By the way, did you just have your period? The skin will be particularly good one week after menstruation.