system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do nails get softer after being in water or easier to cut after taking a shower?
gpt
Our nails are made of layers that make them strong and help them keep their shape. One of these layers has keratin cells, which is a special type of cell kind of like bone. These cells are very thin and let water pass through to keep the nail hydrated and healthy. 

If we have a shower or go swimming for a while the nails get over loaded with water and become soft until it can be absorbed.