When it comes to breathing new life into fine, flat hair there’s one woman who we turn to: celebrity hairstylist Jen Atkin and her brand OUAI. Specifically formulated for finer tresses, the Fine Hair shampoo is enriched with biotin, hemp seed extract, chia seed oil and hydrolysed keratin to leave strands clean and bouncy, without weighing them down. The best parts? It’s sulphate-free and imbued with the brand’s Mercer Street fragrance, think orange, peony, magnolia, jasmine and musk.| OUAI shampooHow to use: Lather up, then rinse. Follow with OUAI fine hair conditioner300mlFor hygiene reasons, this product cannot be exchanged or refunded, unless faulty.