One thing that Fudge does very well is violet toning products. The Fudge Clean Blonde Shampoo (£14) specifically, is highly concentrated, so it's not recommended that you leave it on your hair (unless you want it to turn purple). Simply massage the product through your hair and scalp, and rinse straight away — at least the first time, you can always work up to leaving it in longer if you prefer a supertoned look. Fudge has also added guarana extract for a bonus hit of hydration.