Transform your blonde hair with Kérastase Blond Absolu Bain Ultra-Violet, the anti-brass purple shampoo. It neutralizes unwanted brassiness and yellow tones, ideal for cool blondes and grey hair. Regular use provides long-lasting protection against brassiness while revitalizing shine and softness. Infused with Hyaluronic Acid and Edelweiss flower, it boosts luminosity and nourishes hair. For best results, apply to wet hair, massage, and leave for 2 to 5 minutes before rinsing.