Because lips are one of the most sensitive and soft parts of the face, there are many capillaries in the mouth, and lips belong to mucosal organs. The connective tissue adjacent to the epithelial cells of thin mucosa is scattered with much richer blood than that under ordinary skin. Its skin is particularly thin and transparent, and the bright red blood under the skin can be seen, making the lips look red. So the red color of lips is actually the color of blood.

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Principles of lip care

1, lip peeling, licking and tearing.

If there is chapped and peeling lips, never lick them with your tongue or tear them directly. If the circumstances are light, it may only affect the appearance, and if it is serious, it will get dermatitis. This is not an alarmist! Because the skin of lips is much more delicate than our body skin, once you lose a little skin, it will cause bleeding, and it is more likely that bacteria will invade and cause inflammation of lips.

2. Don't use lip makeup remover with strong cleaning power.

Lip makeup remover with too strong cleaning power will take away the sebum film on the lip surface, which will further dry the lip and make it easier to peel off. In the long run, the protection of lips will become weaker and weaker.

Popular Science China —— Lips: A Health Alarm.