Blue Blacklight Shampoo's professional formula is more powerful than the retail formula (250ml) for better tone control, specially designed for highlighted, bleached, white, and natural blonde hair, eliminating brassy tones and reviving dull highlights for a clean and vibrant look. Its unique formula, enriched with 11 amino acids and argan oil, hydrates, strengthens hair structure, and repairs surface damage while extending color longevity. Sulfate, salt, and paraben-free.