Kèrastase Blond Absolu Masque Ultravio 200mlIdeal for lightened, highlighted cool blonde hair in need of neutralisation, this rich purple mask penetrates the 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