Dark lips are caused by a variety of conditions, which may be individual differences, hyperpigmentation or anemia, liver or kidney insufficiency. It can be improved by reducing the use of cosmetics and medication. Darkening of the lips may be due to individual differences. It may also be related to the external use of lipstick, lipstick and other cosmetics, or long-term inflammation and infection of the pigmentation left behind, you can use the removal of pigmentation of the ointment, such as hydroquinone cream, etc., to get rid of lip pigmentation. Black lips may also be anemia caused by inadequate peripheral circulation, usually recommended to eat more iron-rich foods, such as animal liver, dates, spinach, etc., to alleviate the black lips also have a certain effect. In addition, if you consider that it is caused by liver and kidney insufficiency, you need to go to the hospital as soon as possible to seek a more professional treatment plan, do not take medication without authorization. Black lips, if there is other discomfort or progressive aggravation, should promptly consult a doctor.