KÉRASTASE Blond Absolu Bain Ultra-Violet Purple Shampoo for Blonde Hair — Blue & Violet Pigments, Hyaluronic Acid

KÉRASTASE Blond Absolu Bain Ultra-Violet is a purple shampoo formulated with concentrated blue and violet pigments to neutralize brassy and yellow undertones in blonde, bleached, ashy, or grey hair while restoring softness and shine.

This ultra-violet shampoo is part of the Blond Absolu range and combines color-depositing pigments with Hyaluronic Acid to care for lightened and cool-toned hair. It targets oxidation and environmental dulling, deposits corrective pigments to cancel unwanted warm tones, and supports fiber strength and manageability. Use it as a targeted weekly treatment or alternate with a gentler cleanser to maintain cool, luminous blonde between salon visits.

How does this shampoo neutralize brassy or yellow tones?

The formula uses concentrated blue and violet pigments that temporarily deposit color onto the hair surface to counteract warm, brassy undertones. Pigments sit on the cuticle rather than permanently altering hair color, making the effect adjustable by application time and frequency.

• Blue and violet pigments cancel yellow and orange reflections.
• Short application time (2–5 minutes) controls intensity of toning.
• Designed for lightened, bleached, ashy, cool-blonde, and grey hair.

Will this shampoo damage or dry out my hair?

KÉRASTASE Blond Absolu Bain Ultra-Violet is formulated to tone while caring for the hair fiber; it includes Hyaluronic Acid to boost hydration and softness. Used as directed—typically once per week and alternated with a milder shampoo—it helps preserve hair integrity and reduce breakage risk associated with frequent toning.

• Hyaluronic Acid provides hydration and slip for detangling.
• Color-depositing pigments are non-permanent and rinse out.
• Best practice: alternate with Bain Lumière or a regular cleanser.

How should I use this shampoo for best results?

Apply to wet hair, distribute evenly, lather, and leave on for 2–5 minutes depending on desired toning strength. Rinse thoroughly and follow with a conditioning or repairing step in the Blond Absolu routine to lock in moisture and smooth the fiber.

• Use once weekly for maintenance; increase frequency carefully if needed.
• Alternating with Bain Lumière helps avoid over-toning.
• Finish with Cicaflash or a nourishing mask from Blond Absolu for shine and softness.

How does this product fit into the Blond Absolu range?

Bain Ultra-Violet is the anti-brass step within the Blond Absolu collection, designed to maintain cool tones while supporting hair rehabilitation. When paired with other Blond Absolu treatments, it helps illuminate hair, reduce fiber fragility, and extend salon-color results between visits.

• Use with Cicaflash for conditioning and reconstructive care.
• Combine with masks or serums from Blond Absolu for targeted repair.
• Part of a regimen that balances tone correction with hydration and strength.

Who is this for? KÉRASTASE Blond Absolu Bain Ultra-Violet is for people with lightened, bleached, ashy, cool-blonde, or grey hair who want to neutralize unwanted warm tones without compromising hydration. It suits those seeking a controlled, weekly toning ritual to keep blonde shades cooler, add shine, and protect hair from daily oxidation and pollution when used alongside complementary Blond Absolu products.

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.