Kérastase Blond Absolu Bain Ultra-Violet 250ml & Masque Ultra-Violet 200ml Duo Kérastase Blond Absolu Bain Ultra-Violet 250ml & Masque Ultra-Violet 200ml Duo The powerful purple shampoo is rich in neutralising agents to instantly remove brassiness and yellow undertones. Ideal for cool blondes and grey hair, the regular use of this shampoo provides durable anti-brassiness protection, keeping blonde shades cool for longer. It protects hair from daily oxidation and pollution, restoring shine and softness. Enriched with a potent combination of Hyaluronic Acid and Edelweiss flower, the formula instantly boosts blonde luminosity while deeply nourishing the fibre. The rich purple mask penetrates the hair fibre to remove unwanted yellow undertones and brassiness, while deeply hydrating and restoring hair strands. The powerful combination of Hyaluronic Acid and Edelweiss flower soothes hair, protecting it from daily oxidation and pollution particles. This non-staining hair mask can be used once a week, or as often as needed to neutralise brassy tones and keep your blonde hair luminous.