Kerastase’s Fusio-Dose Concentre H.A Ultra-Violet is crafted to maintain vibrant, cool-toned blonde hair. Ultra violet pigments expertly neutralize brassiness, ensuring a pure, icy hue.Hyaluronic Acid and Edelweiss oil provide intense hydration and strengthening benefits. This potent combination works to restore damage from bleaching, leaving hair feeling softer and looking shinier. This treatment is essential for those wanting to maintain their cool blonde tones while protecting against environmental wear.