Hair Regrow

I have dark brown hair, but I recently noticed a wisp of blond hair in the hair. I've never had blond hair, but I was wondering if the hair is removed from the root rejected a lighter color? That is the sun. Summer can make people's hair. N verano, pero el sol. The sun can bleach hair a lot. I'm back from vacation in Utah with light brown highlights! and, usually black hair:) I agree its welll probably part of the sun, but do not know why this happens, but the hair grows between people of different colors - usually darker as they age . my hair was light brown and blond when he was 2, but now I am a teenager and his half-brown.