"It dries up, then the scab comes off, but the wound remains and it happens again. What can I do to make it go away for good?"

To help a lesion heal at the corner of your lips, it's important to keep it hydrated. Using a thick, fragrance-free ointment like Vaseline can improve elasticity and aid in the healing process. This type of injury can take time to heal due to exposure to dry air, saliva, and movements of the mouth. With regular hydration, the lesion should improve within a week at most.