My hair is naturally blonde, yet I have some random jet black hairs. Anyone else got this? Why is it

The hair on my head is naturally quite a light blonde colour, but I have all kinds of hairs (naturally) mixed in- a few brown hairs and a few that are jet black. Yesterday I found a really thick black hair on my head and it got me wondering if other people have this. It seems really odd, and I don't quite understand how your hair can be so varied, since I was taught that hair colour is genetic- i.e. there's a gene for blonde hair, a gene for brown, a gene for black etc.

My hair is naturally blonde, yet I have some random jet black hairs. Anyone else got this? Why is it?

This is fairly common. I see it often with my clients.

I have blondes with random dark hairs and brunettes with random blonde, grey or white hairs. These clients are of all ages one is even only 14.

I wouldn't worry too much about it.

My hair is naturally blonde, yet I have some random jet black hairs. Anyone else got this? Why is it?

i get brown hair in the winter in the summer it is blond like the bottoms of my hair in the winter turn bown i don't know why though? i am naturally blonde too!

My hair is naturally blonde, yet I have some random jet black hairs. Anyone else got this? Why is it?

I am a natural blonde too and my hair is also like that, never could figure out a reason why, I figured it was genetics from other people in my family but, my hair is predominately blond