WHEN YOU ARE GOING TO MIX THE DYE OR DECOLORANT IN THE HAIR SOMETIMES YOU HAVE DOUBTS THAT THE PEROXIDE VOLUME MUST BE USED FOR EVERY JOB, FOR EXAMPLE IF YOU ARE COVERING CANAS, IF YOU ARE GOING TO MAKE OR YOU WILL MAKE A TOTAL DISPOSAL. IN THIS VIDEO I TELL YOU ALL THE USES THAT YOU COULD GIVE TO THE PEROXIDE ADEQUATELY.