Habitual Picking and Licking
The skin is considered the outer protective layer of the body and is the largest among other organs of the human body. It is composed of three outer layers, namely epidermis (the topmost layer), dermis (middle), and hypodermis (the bottom). The top layer of the skin (epidermis) serves as a protective barrier that keeps the bacteria, germs, and harmful substances from the environment from entering the body and causing infections. In addition, it has oil glands (sebaceous glands) that lubricate the skin and prevents the tissues from drying out.
Nevertheless, it is not the same for the lips. It means it does not retain much fluid to moisturize the lips and is more prone to sunburn. Many people resort to licking their lips to moisturize them. However, the wetness and its effect are only temporary and can worsen the dryness. Saliva contains enzymes that can multiply the speed of drying out delicate lips. The urge to pick out and peel off dry and dead skin becomes habitual when the saliva dries out. After peeling it off, the tongue then licks the lips once more. This prolonged and repetitive cycle adds more injury to the already dried and lifeless lips.
