What should I do if my face is dull and yellow? Everybody give some advice.

Staying up late often does lead to dull and yellow face, and it will also lead to a series of physical diseases after a long time. So I suggest you arrange your rest time reasonably and try not to stay up late. In addition, you can also drink some Zhengqing Lingzhi oral liquid, which is also helpful to improve sleep quality. This is an easy-to-use personal test.