Page 47 - HAIR COLOUR

toner to neutralise any yellow left in the hair.” (Fig 41.) (Fig 42.) (Fig
43.) (Fig 44.) (Fig 45.) (Fig 46.) (Fig 47.)

The two above examples are great but there are still many questions
unanswered about bleach. For example, why is it I have bleached a
client’s hair in the morning for a photo shoot in the afternoon, and when
the pictures come back, they appear to have black roots about one centre
metre long, the same thing has happened when I have done a client who
is appearing on television later that day?

You may think this is because of Keratinisation but you would be wrong,
it is about absorption and reflection of white light. There are so many
hairs to a square inch that it is impossible for the light to penetrate right to
the roots, thereby leaving them in shadow which can only be recognised
by the Retina rod cells.

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