To combat chapped lips, it is important to stay well hydrated by drinking 2.5 to 3 liters of water per day. Using a more hydrating lip balm, such as La Roche Posay or Avène, every 2-3 hours during the day can also be beneficial. Applying a generous layer of vaseline before bedtime until your lips return to normal can help as well. If you work outdoors, wind and sun exposure can be irritating, so using a lip balm with sunscreen is recommended. It is a myth that frequent use of lip balm like Lipsil can actually dry out the lips, so it is safe to use.