Oligo Professionnel's Blue Shampoo is specially formulated for natural, highlighted, or bleached blonde hair. It eliminates brassiness and revives bright highlights thanks to its formula enriched with 11 amino acids and argan oil, which moisturizes, strengthens the hair structure, and repairs surface damage. Sulfate-free, salt-free, and paraben-free, it gently cleanses while improving color retention. Apply to wet hair, lather, leave on for 2 to 5 minutes, then rinse. The result: a luminous, clear, and radiant blonde.
