jetkitty83 asked:
Why do some men have gray hair but their eyebrows remain dark?
I haven’t noticed this so much in women, though it may happen that way too – I think it’s just more noticeable with guys.
When men get older, I notice some of their hair goes completely gray or white, but their eyebrows remain dark, or the same color as their hair used to be.
Why don’t they always go completely gray too?
Any ideas what causes gray hair?
Does it have to do with genes?
Because I know some people go entirely gray.
If it is genes, does that mean the genes that determine hair and eyebrow color are separate ones?
genes. dna.
It’s the same reason why the sky is blue.