Gray hair anxiety at 22, before you ever have your first gray hair, sounds like you are looking for things to be anxious about. I know it's not intentional, but you are unnecessarilary upsetting yourself.

It was a little humbling when I found my first gray hair, but it was at a ripe, old middle-age when I expected it.

I've highlighted and colored my hair since I was 12! My grandma got a hold of me with a crochet needle and foil. In my family, plain and mousy is a sin.