Swollen lips may be caused by allergic reactions, injuries, chapping or sunburn, infections, and cysts called mucoceles. The swelling comes from either inflammation or built-up fluid under the skin.

How many tubs and tubes of lip balm did you get through in 2025? If the answer is ‘too many to count’, yet your lips are still constantly cracked and dry, there may be something else at play. In a ...