I always been told that the cause of gray hair is the lack of melanin, that gray hair don’t have melanin. I was wondering, If that’s true, why it’s turn blonde when bleached, since bleach products make their work damaging the melanin.
Bleach breaks melanin apart but there’s still enough there to give you color. (It mostly breaks down the non-yellow type of melanin which is called eumelanin. The melanin which provides most of the yellow color is called phaeomelanin.) Gray hair doesn’t have either kind!
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