Is it okay to lick your lips with your tongue when they are dry?

　　Licking dry lips with tongue

　　Saliva contains substances such as mucus protein, salivary amylase, and inorganic salts. When you lick your lips, it is like applying a layer of paste to your lips.

　　When the wind blows, the water evaporates, forming a dry film that shrinks, making the dryness worse and even causing the lips to swell, crack, and bleed. The more I lick my lips, the drier they become.

　　The correct way is to apply skin care cream or vegetable oil on your lips, drink plenty of water, and supplement vitamin A appropriately.