What Causes Lips to Turn Black?


Black or darkened lips can be caused by serious illness, such as cancer, but more often, this condition is due to lifestyle. If someone is already darker-skinned, certain behaviors like coffee or wine drinking, smoking, and sun exposure will cause the lips to turn black.
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1 Additional Answer
The main causative factors of lips turning black include improper skin care, practises such as smoking, hyper-pigmentation, excessive caffeine use and allergens among other reasons.
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