I knew a boy at 14, had red hair like Chuckie from Rugrats. At 25, it was like Picard.
Here I am at 50 and my only white hairs are a couple in my eyebrow. I'm told I have a chance of having very few gray hairs otherwise. And nobody thinks I'm turning 50; they usually say, "not even 40!" So I'm not complaining about that either.