The yellowing of facial skin tone can be caused by factors such as normal yellowish skin tone, poor personal state, resulting in visually yellow skin tone; it can also be caused by diseases and other factors that lead to yellowing of the skin, first of all, we need to confirm what causes it and take appropriate measures according to different causes. If you have a need for whitening, you can use some medical skin care products to improve your dull skin tone after cleansing your face with warm water in the morning and evening, or use medical cosmetic means to whiten your skin, such as photorejuvenation, laser blemish removal, fruit acid peeling, etc. to improve the dullness and uneven skin tone, so that the skin can visually go yellow. You can increase the amount of water you drink on a daily basis to speed up your metabolism. When the weather is hot, you should try to avoid ultraviolet radiation to prevent skin dullness caused by pigmentation. Second, the personal state of poor sleep, poor skin nutrition state and other conditions will make the skin yellow, so do not stay up late for a long time, pay attention to improve the quality of sleep, strengthen nutrition, skin tone and skin quality can be improved. Third, pathological factors suffering from liver and gallbladder disease can often appear jaundice, manifested as skin, sclera yellow stain, at this time should actively treat the original disease, as long as the original disease is improved, the skin color will return to normal. In addition, the usual excessive consumption of citrus, pumpkin, carrots and other foods with high carotenoid content, carotenemia can occur, causing yellow skin staining, but no change in the sclera, after stopping consumption, with the body metabolism can gradually recover.