Dry lips is a condition in which your lips become very dry. Here are some of the causes of dry lips:
· Environmental factors such as hot, dry weather or cold, dry weather can strip your body (including your lips) of water.
· Medical conditions such as inflammation of the lips by a yeast, Vitamin B deficiency, and Vitamin B2 (riboflavin) deficiency, the common cold, flu, diabetes, Kawasaki Disease, and Sjogren’s Disease can result in dry lips.
· Frequently licking your lips can strip your lips of the natural oils that are used to protect the lips from water-loss. In addition, your saliva has acids. So, these acids can further damage the skin cells in your lips, leading to cracks/splits.
· Smoking