A hair mystery

A tiny percentage of my hair has been white ever since I was 10 years old. It used to make me very self-conscious as a kid but I eventually grew out of it. Recently, I noticed a strange thing about some of my white hairs: about one out of every 5-10 strands of white hair was turning black again. Some strands were completely white while some had black ends with white roots. The rare ones (of which I have found about 10) have black ends, white middles and black roots. The length of the white middles varies between one inch and several inches.


I rarely dye my hair these days as I dislike the damage and dryness that hair coloring causes. My last dye job was over a year ago so more than half of my now chest-length hair is undyed. From what I've read, once hair turns white, it does not turn black again. I have absolutely no idea what causes this. Variance in stress levels maybe but I'm always quite easily high-strung, due to my job.


It's just bizarre!