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quote:Originally posted by daveshortsWhite hairs are quite different to the coloured ones as they tend to be coarser as well (no idea why) so I don't think they they can bleach themselves once they have grown - I think you have just not noticed.
quote:Originally posted by rosyWhat makes hair coloured is the production of melanin by cells in the follicle. When these pack up and stop working the hair goes white. Why this is, I have no idea... melanin producing cells do just seem to do wierd stuff (like causing liver spots on older people's skin, and indeed freckles).It does seem to be genetic. I started noticing white hairs on my own head when I was 18 or 19... but I can't say I was much surprised as my Dad's hair's been mostly grey since I was old enough to take notice, which I guess would have been when he was 30 or so.
quote:paul i thought you were young, like early twenties.