with bleaching u need to lift from the colour spectrum, it goes from black to red to orange to yellow to white, the darker the colour the more work the bleach has to get thro. theres no other way of doin it as tint doesnt lift tint, but theres only so long u can leave bleach on for in one go so u may well expect a second goin over, but poss not there and then, depends how ur hair has faired with the first application.
she needs to give u a full consultation and a full expectation as to what can happen...and be aware that it may take more then one go at it. u have to remember what ur hair is goin thro and the expectations can sometimes be more then what can be acheived at the time. a toner can be used, be it a shampoo or semi permanent colour to get rid of any brassiness.
just want to comment on redsadies last post of the ends lightening better, it does depend on whats already on the hair:
1: if naturally light but tinted dark, it tends to have roots before getting highlighted, so in this case the roots will have less to go thru on the spectrum before processed so they will lighten quicker and cleaner then the rest
2: the roots are the closest to the head so they are aided by the natural body heat, and as we loose most of it thru are heads, it plays are big influence in speeding up the process again lightening quicker and cleaner than the rest
like i say depends on whats on the hair, if u can let ur hair fade up using a clarifying shampoo for a few weeks u might find it helps get the colour a little easier and less harshly
hth's both of you !
xxxxx
