Blond Absolu Bain Ultra-Violet Shampoo

Blond Absolu Ultra-Violet is Kerastase's purple-pigment shampoo for lightened and blonde hair — and it fights the warm brass that black hair always drifts toward once it is bleached pale. Asian hair carries heavy dark pigment, so blonde and ash results sit over a stubborn orange-yellow base that resurfaces between salon toners; the violet here neutralizes it while a nourishing base keeps heavily lifted hair from feeling dry. Use it once or twice a week, not every wash, or the violet can build into a dull cast; on the off days, use a gentler wash. It tones and cares rather than deeply repairs — pair it with a bond or moisture treatment for the damage bleaching leaves.