Keep the area clean and dry
Apply petroleum jelly or a thick fragrance-free ointment often
Avoid licking, biting, or picking the cracked skin
Use a soft toothbrush and mild toothpaste
Avoid spicy, acidic, salty, or very hot foods
Stay hydrated
Use lip balm regularly
Check for and treat dry mouth
Consider an antifungal cream if yeast infection is suspected
Consider a mild hydrocortisone cream only if advised by a clinician
Eat foods rich in iron, vitamin B12, and folate
See a dentist or doctor if it lasts more than 1 to 2 weeks
Seek medical care if it is severe, recurrent, swollen, bleeding, or infected