Boosts hair color luminosity. $35. Key Ingredients: Hyaluronic Acid: This ultra … What it is: An ultra-violet, color-correcting shampoo made with hyaluronic acid that neutralizes lightened, cool-blonde, bleached, or grey hair. Really like this product to help neutralise the brassy yellow tones in my hair - quite a gentle shampoo compared to some other shampoos on the market for blonde hair - can use this one 3 times a week with out my hair gaining a purple tint [product:kerastase-blond-absolu-anti-brass-purple-shampoo … Kerastase Blond Absolu … Kérastase Blond Absolu Bain Ultra-Violet Purple Shampoo. $24.58. Kerastase BLOND ABSOLU Bain Ultra-Violet Purple Shampoo with Hyaluronic Acid neutralizes brassy hair. For maximum hydration, Kérastase's Blond Absolu … KERASTASE Blond Absolu Bain Ultra Violet Anti-brass Purple Shampoo, 8.5 Oz, 250ml (3474636692231) 4.6 out of 5 stars 2,218. Shop Now. KERASTASEÂ BLOND ABSOLU BAINÂ ULTRA-VIOLET Anti-Brass Purple Shampoo. Only 3 left in stock - order soon. Illuminates blonde hair. Kerastase Blond Absolu Bain Ultra Violet ShampooÂ is design to remove brassiness and yellow undertones in lightened and grey hair types.This purple shampoo … Hair Type: Straight, … Instantly neutralizes brassy hair and yellow undertones to maintain cool blonde shades. Size: 250ml / 8.5fl.oz. Kérastase.