Why does hair on your head and beard go grey when you get older, but their eyebrow hair doesn't

Just seeing what I've got to look forward to!

Why does hair on your head and beard go grey when you get older, but their eyebrow hair doesn't?

Well sir, I'm not quite sure. Very interesting question though. I poked around online to see if I could find an answer for you, but couldn't find one. I'm not sure why it takes so long to go gray compared to the the rest of the head/beard. My theory, however, is that we cut/trim our hair (and for men, beards), and it keeps growing at a constant rate. Eyebrows, however, don't really grow that fast and most people don't trim or cut them, so I'm guessing that the eyebrow hairs just last a longer time. I'm not sure if that made sense though. LOL oh well.

Why does hair on your head and beard go grey when you get older, but their eyebrow hair doesn't?

Oh, the eyebrow hair does too...sometimes it can take longer...but trust me, it goes.

Why does hair on your head and beard go grey when you get older, but their eyebrow hair doesn't?

yip... it really gets grey...

Why does hair on your head and beard go grey when you get older, but their eyebrow hair doesn't?

ALL hair turns grey. Yes, even down there.

Why does hair on your head and beard go grey when you get older, but their eyebrow hair doesn't?

It does lose its color everywhere you have hair.