6 natural ways to keep your lips soft and hydrated
Lip tip #3: B diligent about supplements.
Severely chapped lips may be a sign of nutrient deficiencies, particularly of B vitamins, including vitamins B2, B3 and B6, as well as zinc, according to Lolis. Beyond harmless dryness, B deficiency can cause angular cheilitis—a condition that leads to bleeding, cracking and flaking on the corners of your mouth.