Dietary supplements may work and the right lip balm is useful – but avoid licking
Chapped lips are common in winter, says Daniel Glass, a consultant dermatologist at the Dermatology Clinic, because of exposure to cold air outside and dry, centrally heated air inside. “Keratin, which forms the top layer of your skin, loses its flexibility and the lips become sore, cracked and scaly,” he says. “Many patients who have chapped lips are lip-lickers. Repeated licking can remove the oily surface film that protects the lips from losing moisture, leading to lips cracking. The digestive enzymes in saliva can also irritate the lips.”
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