Moroccanoil Blonde Perfecting Purple Shampoo Sun, chlorine, and other environmental stressors can change the colour of both natural and chemically enhanced hair . . . to something less than ideal. This bestselling Moroccanoil Blonde Perfecting Purple Shampoo ($12-$24) keeps blond, light brown, and grey hair far from brassy thanks to its violet pigments. Image Source: sephora.com Moroccanoil Blonde Perfecting Purple Shampoo $12 from sephora.com Buy Now