When your pucker is so parched that it’s flaking and cracking, swiping on a balm doesn’t always cut it. The medical term for severely chapped lips is “cheilitis,” and it occurs when skin’s outer barrier loses moisture faster than it can be replenished, says Mona Gohara, M.D., a board-certified dermatologist, a clinical professor of dermatology at Yale School of Medicine, and a member of the Prevention Medical Review Board. “Without proper care with the right moisture-locking products, water evaporates and dries out that protective barrier,” Dr. Gohara adds.
Your lips are vulnerable to begin with because the skin there is thin, lacks lubricating oil glands, and has very little melanin to shield it from UV exposure. “All this makes your lips uniquely prone to dryness and damage from environmental factors…