Most Helpful Girl
I dyed my hair dark (almost black) for a long time. I decided to go back to blond late last year and now it is red. It just won't go away, no matter how much my hairdresser tries. I'll just have to let it grow out and try to make it look OK in the meanwhile.
Light blond hair will be very hard to get back if you change your mind so be prepared. There is apparently also a difference between the ones you can buy in the store and do yourself and the hair stylist ones. Tthe ones you do yourself sticks like crazy and should not be used if you ever intend to go back to blonde.
It is fun to change your hair colour though but I would recommend not doing it yourself.