L'Oréal Professionnel Série Expert Blondifier Masque is specially formulated for natural or chemically treated blond hair. This nourishing mask is loaded with Polyphenols present in the Açai berry extract that replenishes and smooths hair fibers of every strand and revives the natural shine and radiance in blond hair without weighing it down. L'Oréal Blondifier Masque is a great once-a-week treatment for blond hair to enhance resilience and improve overall hair health.