What Causes Cracked Lip Corners, Plus Expert-Approved Ways To Heal

Everyone, at some point, experiences chapped lips. It's an inevitable and universal struggle. The best we can do is to fight the temptation to pick off dead skin, avoid dehydrating triggers, drink water, and pay attention to what we're applying to the precious area. 

"Angular cheilitis is a common issue that occurs in the corners of the mouth that looks red, can be rough, and can have splits in the skin. It is often tender, especially once splits (called fissures) occur," said Heidi A. Waldorf, M.D. Most people will experience this in their lifetime, but it's most common in those who wear dental appliances, wear masks regularly, and in children. 

And if you're experiencing it for the first time, you may be tempted to think that those red corners are simply extra dry, but there's actually a lot more going on than you might think.

Just as the condition itself is more complex than it seems, so is the cause. "Trapped moisture between the ends of lips in the corner causes a combination of yeast and inflammation. We see it frequently as people age—the corners of their mouths lose support, the lips and skin fold over and trap moisture," Waldorf said. In addition, those who sleep with their mouth open may be prone to this condition because of the increased chance of saliva buildup on the corners of their mouth. (If that's you, you might want to consider mouth taping.)

Cracked corners of the mouth can be overall frustrating to deal with. If you want this condition to heal quickly, it's best to see a dermatologist. This is especially true if you experience the condition regularly. 

While you do want to stay away from heavy lip balm application while the skin is irritated, it is best practice to keep your lips hydrated once the cracks heal up to prevent these cracks from coming back. "To avoid recurrence after it clears, be sure to apply a good barrier ointment before bed and, if you are a lip licker, regularly during the day," Waldorf said. For ointments, we're partial to the Doctor Rodgers Healing Balm, Pipette Balm Stick, ILIA Lip Wrap Reviving Balm, and Abhati Mahandi Lip Treatment.

But for daily, consistent lip hydration, it's best to have a trusted, high-quality lip balm on hand. The plant-based ingredients work to hydrate your lips and keep them healthy long term, not just temporarily relieved. There's a blend of humectants, emollients, and occlusives which will work together to get the lips hydrated and lock that moisture in.