Can you change your hair colour without chemicals?

24 September 2006

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Question

I'd like to know whether it's possible to change your hair colour without chemicals, such as with gene modification. It would save me a fortune! Are there any catalysts on the market that would catalyse a platinum blond colour?!

Answer

The chemical that you usually dye or bleach your hair with is hydrogen peroxide. Now interestingly, that's a typical reaction that you do in school. Hydrogen peroxide decomposes into oxygen very very slowly, but if you add something like potassium iodide you can make this happen a lot more quickly. There's a fantastic experiment you can do where you put some hydrogen peroxide (also found in contact lens fluid) and add a little bit of potassium iodide and bubbles. The whole thing comes sweeping out of the top in this big fountain of bubbles. As for trying to dye your hair without a catalyst, I'd go for the catalyst way myself!

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