Ideal for lightened, highlighted cool blonde hair in need of neutralisation, Kérastase Blond Absolu Masque Ultra-Violet penetrates the fiber 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 & cool. Key features: - Neutralises brassy & yellow undertones. - Ultra-nourishing formula. - Illuminate cool blondes for even brightness. - Restores shine and softness.