Page 20 - HAIR COLOUR

So, what does Keratinisation have to do with hair colour? If you are
taking hair colour darker it is not a problem, However, if you are
lightening hair and you apply bleach or hair dye all over at once from
roots to ends in one single application, you will notice that the roots lift in
colour immediately, the middle lengths lift less and the ends hardly lift at
all, leaving the hair with three bands of colour.

Be aware of keratinisation and colour in the following way, first apply the
bleach or hair dye to the middle lengths and ends, wait twenty minutes
and then apply fresh bleach or hair dye to the roots and comb it through.
This time the colour will be even from root to ends. (Fig 16.)

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