store bought hair dye.?

my friend has never dyed her hair before and she wants me to dye it before the school year starts, she has VERY dark brown hair basically looks black and wants to go light brown. i have dyed plenty of my friends hair, ive also done my own hair but since her hair is soo dark i dont think a box of garnier nutrisse hair dye will come out on her hair, so she wants to get a highlighting kit an put it all over her hair, do you think that it will dye it? and is that a good idea? please let me know soon because she wants me to do this tomarrow.
 
Back
Top