The Moroccanoil Blonde Perfecting Purple Shampoo (£19) gives you a gentle cleanse while brightening and cancelling out yellow and orange tones in your hair. The directions recommend leaving the shampoo on your hair for a few minutes, our editors who tested the formula have found two minutes to be a sweet spot to achieving an icy-blonde.
In addition to the iridescent violet pigments that give your hair a natural-looking sheen, the colour-safe formula also has Moroccanoil's signature ArganID Technology. This works by using positively charged micro-capsules that are attracted to the negatively charged hair fibre, helping to infuse the antioxidant properties of argan oil deep into the cortex of the strands and help repair your hair.