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Ammonia Free Hair Colour

So what exactly is ammonia free hair colouring ?

In reality it’s whatever you want it to be as long as it doesn’t contain ammonia! It may still contain PPD -paraphenylene diamene – : see allergy to paraphenylene diamene ; and it may contain a host of other chemicals whose names you’re not even aware of, but as long as your hair dye doesn’t contain ammonia it’s technically ammonia free.

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