So that they don't explode.
AKA with a thing called osmosis (transportation of water through cells.)
Answer: Enzymes are macro molecular biological catalysts that accelerate chemical reactions.
(a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.)
Explanation:
Try to keep your skin mosturized as much as you can, but in general you can't really prevent it because its just dead skin. it happens to everyone.