I was watching Split Ends and a girl on the show said she added double peroxide to the color (ex. 1 part color to 2 parts peroxide) what will that really do to the hair?

-Color Junkie-

Well, it is extremely bad for your hair, it will make it weaker and break more easily, and then you will have to put up with the regrowth. (I asked my sister who is a hairdresser)