*dyed black hair back to blonde*

hi there! i am having some problems with girls going from dyed black hair and wanting to have lighter hair and blonde hi-lites.

well this girl came in with dyed black hair...she wanted to have her whole entire hair to be lighter and with blonde hi-lites...soo we bleach wash her hair...and her grow out is alot lighter than the rest of the hair...so we put on a toner on the grow out...and then put an all over color...after that we foiled her hair...it took us about 4-5 hrs...and thats a big chunk of time ..and i was wondering if there's any faster way to handle this kind of situation! any tips/advice would be awesome! 

so theres a color remover that removes the black dye? and it only removes the color(dye) not her natural hair color? right? after that then we bleach wash the whole entire head? and then you foiled the hair and put the desired color in between? am i correct? im not sure! hehe im still learning and gosh sometimes it can be so confusing!....and the sad part is that we only charged her $140! for the whole entire thing...i guess we need to up our prices! and thank you so much for responding! hope to hear from u soon!

Colorfix will remove the build up of oxidative dyes (permanent dyes), it won't affect the natural colour like bleach does.  If I remember correctly one application takes 30 minutes but there are full instructions in the box.  On dyed black hair it may take more than one application, and will not get the hair down completely to the natural colour...it will probably be an orangey brown/blonde after one application depending on how long the hair has been dyed for.