Hey, Drink plenty of water.  2. Use lip balm. Wax-based products like Chapstick provide a protective covering to the lips to prevent free radicals, the environment, and the weather from taking their toll on this sensitive area.  3. Stay away from environmental factors that can damage your skin. Smoking cigarettes or chewing tobacco, drinking alcohol, working with heavy-duty chemicals or fumes, and other factors may irritate your lips and lead to peeling or cracking. Wear a face mask when you're around strong smells or emissions. Don't wash your face with strong or harsh soap. Treat your lips gently to help care for this delicate skin.  If not cured by all these it could be part of  chelitis  due to vitamin b  ¹²deficiency, take suggestion from physician about chelitis