Review (3/5): It'll fade quickly, but to a nice color.
I have dyed my hair many times with this brand. Your hair wont be the same as seen on the box, only for maybe the first week. Otherwise it will fade into a pastel-ish kind of pink (Mine is now pink on the top and blonde at the ends because in completely faded out only the ends) But the bright pink it fades to is actually extremely awesome. So if you're going for the pink on the box ya' might as well forget it, but if you want a brighter pink it's wonderful!
P.S~ If you work out, go on runs or really do anything involving sweating, hold off on all of that until it is faded.