Kérastase Blond Absolu Anti-Brass Purple Shampoo The Kérastase Blond Absolu Anti-Brass Purple Shampoo (£19) contains hyaluronic acid to strengthen damaged hair and edelweiss flower to protect against daily damage, all the while neutralising warm, brassy colours in blonde hair. Image Source: lookfantastic.com Kérastase Blond Absolu Anti-Brass Purple Shampoo £19 from lookfantastic.com Buy Now