Every now and then a friend will inbox me asking a question about haircare, and usually it's a question that will be quite common. This is the first time I've posted a Q&A here on the blog but will continue to do so from now on when a question comes through that I find relevant and useful.

Q:  If I were to dye my hair blonde, how long should I wait before I go into a swimming pool? I don't want it to go green! This is a question with several implications, so let's break it down. Firstly, the...
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