Cracks at the corners of your mouth can be angular cheilitis - inflammation caused by moisture trapping, yeast or bacteria, and sometimes volume loss that creates a deep fold at the corner. If it keeps coming back, you have to treat the cause, not just the symptoms: • Antifungal or antibacterial cream • Reducing saliva pooling • Addressing structural drooping at the mouth corners In select patients, a corner lip lift can slightly elevate the corners, reduce skin-on-skin folding, and make recurre