Well...hahah..I used L'oreal branded dye (purple and red) and it was supposed to wash out in 8-10 washes...and here I am 2 months later with pinkish hair still. Granted, I used two cans in a 2 week period and used the entire bottle each time, and I don't have that much hair. It also said not to use that particular color on blonde hair (oops) but still, it should be gone by now you'd think! It was very simple to use though and I'd probably use that particular brand in the future, if I were to do it again.