I looked at a coupld of questions on this website, originally to understand the process of mitosis, but then I saw that there were various questions that had more mundane topics that intrigued me. I was wondering what was the process of white part of your nail, I believe it is called the lunula, correct me if I am wrong, recedes. I know that there are multiple appearances of your nails that can indicate various things, like iron deficiency, but I was wondering if this one had a particular process to it.
Thank you.

see URL below for more details:
https://en.wikipedia.org/wiki/Lunula_(anatomy)