I'm 37 and I don't have any white hairs on my head, but I do have one stray white hair in my right eyebrow that keeps returning after each plucking!! I also think that it is totally hereditary. My father, who is almost 61, is just starting to turn white (I think I will be like him), but my mother started getting gray in her 20's and so did my younger brother (he's 33 now and has quite a bit of white in his hair). Better my brother than me, since he looks very handsome with the white streaks through his black hair
Becky
Becky