hair colors will reveal the same underlying pigment
when a decolorizing agent
, aka bleach
, is applied. Understanding this and training one's eye
these stages of change
is invaluable for any colorist
These are known as the stages of lightening:
If one lightens past the pale yellow stage, a white result, then the structural integrity of the hair has been comprimised. It is therefore recommended that if a pale, clear ash blonde result is desired, akin to Christina Aguilera, then lighten to pale yellow and follow with a violet-based toner to neutralize the unwanted yellow pigment.