Lip dryness is a very common phenomenon, which occurs for two reasons: one is lack of vitamins, and the other is lack of water.

Cracking from the corners of the mouth is a phenomenon of vitamin deficiency. Take more vitamins, eat more fruits and vegetables, and avoid partial eclipse. Insufficient water or talking too much, dry mouth will lead to chapped lips and make waste skin accumulate on lips or corners of the mouth. Drink plenty of water at this time and keep your lips clean.