From celebrity coiffeuse Jen Atkin – responsible for maintaining the manes of Klan Kardashian, Gigi Hadid and Gwen Stefani (to name a few), OUAI's Clean Shampoo is a clarifying cocktail to eliminate build-up and ‘detox’ congested tresses, OUAI’s Clean Shampoo is suitable for all hair types and textures – dissolving excess oil and residue without stripping hair or compromising its colour. Sufficiently gentle for everyday use, this is great once a week to hit ‘re-set’ if you use a lot of styling or texturising products.