system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: why do lips get chapped in cold weather compared to hot? Doesn’t the hot air absorb the moisture more?
gpt
Hot air does make moisture move more, but that also includes nearby water sources, making the air more humid.  

The higher water content of the warm air doesn't suck from your lips as much as the very dry cold air. 

Plus, when it's warmer, you're sweating more, applying moisture more directly.