Massage into wet hair evenly, then leave it to do its magic for 30 seconds to 3 minutes depending on the condition and depth of colour of your hair. Then voila, back to a cleaner, fresher looking blonde.
The toner in the shampoo seems to work well as I have really liked my hair colour since using it, and it definitely seems to clean my hair well. The only thing is that it does stain your hands slightly purple, although that does come off eventually don't worry! Wouldn't recommend rinsing your hair in the bath though - it's quite a shock!