Yep - had my hair done dark dark mahogany with a slight purple rinse through it. A week later my hair was a flourecent purple and in the sun it glowed!!! I saw my hairdresser and told them I was coming in to have my hair darkend to black (I was happy with that) and that i wasn't going to be paying for it as I never wanted purple hair in the first place. They changed the colour, didn't charge me and it looked great. Really glad I went back. Go see them monday and tell them to fix it.