In general, the color of the lips usually ranges from pink, red to dark. These are characteristics that are inherited from parents or ancestors. For example, people with darker skin tend to have darker lips than white people.
Older age Lips may become more and more dark, just like the skin color of the body, which passes food, drinks, toothpaste, lipstick, sunlight, and many more that can make the mouth black.
Personal behaviors, such as thick lips licking, extreme smoking, etc.
Sunlight causes dark lips may be caused by sunlight that makes the mouth darker, similar to the skin that is exposed to the sun often, but we can prevent lips from this cause by choosing a lipstick formula sunblock. But if you are allergic to lipstick or food allergies. When exposed to sunlight, it may even make the mouth darker.
Lipstick allergy, In particular, cheap lipstick, is not up to standard. Or good quality lipstick, famous brands may make some people allergic as well. Which is most often caused by allergies to perfume, preservatives or preservatives contained in the lipstick
Temperature, another reason that can cause lips to change, such as cold weather. Your mouth may be pale, dark. Because the blood vessels contracted and there was more black than usual, But this problem will be temporary Therefore do not have to be very worried
People with incomplete health such as anemia, chronic illness Patients with fever May cause the amount of blood flowing to the lips to be less. After a long day, he will show imperfection. Therefore making the mouth look pale Or another way In the case of patients with heart disease whose blood is concentrated. It may result in the lips looking darker than healthy people.
Some drugs, such as diabetes, diuretics, antifungal drugs Allergy medication Or cold medicine May cause allergic reactions
Some fruits and vegetables such as ginger, celery, coriander, onion, garlic, and citrus fruits such as oranges, pineapples, mangoes, tamarind, etc., because these foods contain substances called psoralen that may remain on the lips after eating. If these substances are exposed to ultraviolet rays in the sun, There will be a chemical reaction that causes the lips to become inflamed and stimulates the production of cells to produce more pigments.