Did you know your lips can indicate nutrient deficiencies? Dark lips, dryness, irritation, or cracks may signal low levels of essential vitamins and minerals. Vitamin B12 deficiency may cause darker or pigmented Analysis of clinical presentations, lip transepidermal water loss and associated dermatological conditions in patients with chronic cheilitis Scientific Reports Dry, cracked lips? It could be sunburn, yeast infection, vitamin deficiencies or something else here's how to fix them South China Morning Post Chapped Lips (Cheilitis) Condition, Treatments and Pictures for Teens Skinsight Cracked Lip Corners? You May Be Dealing With Angular Cheilitis HUM Nutrition Blog