KÉRASTASE Blond Absolu Bain Ultra-Violet Purple Shampoo - 250ml, Neutralizes Brassiness & Restores Shine

KÉRASTASE Blond Absolu Bain Ultra-Violet is a purple shampoo that neutralizes brassy yellow undertones in blonde and gray hair while restoring softness and shine.

Formulated with concentrated blue and violet pigments plus hyaluronic acid, this salon-grade cleanser targets warm, unwanted tones introduced by lightening, sun exposure, and oxidation. It deposits color-correcting pigments as it cleanses, helps protect the fiber from daily pollution and breakage, and leaves hair easier to detangle and more luminous. Use it as a weekly treatment within the Blond Absolu routine to maintain cool, vibrant blonde shades.

How quickly will I see reduced brassiness?

You can notice a visible reduction in yellow or brassy tones after a single application, especially when left on the hair for the recommended time. Pigments act immediately to counteract warmth while cleansing removes residues that exaggerate brassiness.

• Apply to wet hair, lather, and leave for 2–5 minutes for best results.
• Visible neutralizing effect after one use; deeper correction with regular weekly use.
• Alternate with Bain Lumière to avoid over-depositing pigment on delicate hair.

Will this shampoo damage or dry out my color-treated hair?

Blond Absolu Bain Ultra-Violet is formulated to cleanse without stripping the fiber; hyaluronic acid adds hydration to maintain softness and elasticity. When used as directed—once per week and followed by a suitable conditioner—it helps protect hair from breakage and environmental stressors rather than causing dryness.

• Hyaluronic acid replenishes moisture and improves hair manageability.
• Use with Cicaflash or another Blond Absolu conditioner to restore fiber after cleansing.
• Limit frequency to prevent over-depositing violet pigments on very light bases.

How should I incorporate it into my blonde-care routine?

Use this ultra-violet shampoo as a targeted weekly treatment to maintain cool tones while relying on a gentler everyday shampoo for routine cleansing. It works best as part of the Blond Absolu line which is designed to hydrate, strengthen, and illuminate lightened hair.

• Use once per week, alternating with Bain Lumière for regular cleansing.
• Apply to wet hair, distribute evenly, lather, leave 2–5 minutes, then rinse thoroughly.
• Follow with Cicaflash conditioner to detangle and restore softness.

Can I use it on natural gray or highlighted hair?

Yes — the blue and violet pigments are effective on various cool tones, including natural grays, full bleached hair, and highlighted or balayage looks. Choose time-on-hair based on how much correction you need; lighter natural grays may require shorter exposure to avoid a subtle violet cast.

• Shorter processing (2 minutes) for subtle toning; longer (up to 5 minutes) for stronger brass removal.
• Suitable for all kinds of blonde: ashy, cool, bleached, and highlighted hair.
• Patch-test first on a small section if you are new to purple shampoos.

Who is this for? KÉRASTASE Blond Absolu Bain Ultra-Violet is aimed at anyone with lightened, cool blonde, bleached, ashy, or gray hair who wants professional-level anti-brass correction without sacrificing hydration. It’s ideal for salon-treated blondes, at-home maintenance between toning appointments, and people looking to preserve brightness and fiber integrity in color-treated hair. Pair it with the rest of the Blond Absolu range for a complete regimen that neutralizes brassiness, strengthens fragile strands, and restores reflective shine.

Ingredients

Aqua/Water/Eau, Sodium Laureth Sulfate, Coco-Betain, Sodium Chloride, Glycol Distearate, Parfum/Fragrance, Cocamide Mipa, Dimethicone, Citric Acid, Sodium Benzoate, Sodium Hydroxide, Hexylene Glycol, Ci 60730/Acid Violet 43, Salicylic Acid, Carbomer, Limonene, Guar Hydroxypropyltrimonium C H L O R I D E, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Magnesium Acetate, Glycerin, Sodium Hyaluronate, Tocopherol, Aspartic Acid, Glycine, Arginine, Glutamic Acid, Phenoxyethanol, Leontopodium Alpinum Flower/Leaf Extract, Fumaric Acid, Malva Sylvestris Flower Extract/Mallow Flower Extract, Potassium Sorbate.