Blacklight Violet Shampoo's professional formula is stronger than the retail formula for better tonal control. This shampoo, formulated for highlighted, bleached, white and natural blonde hair, eliminates yellow tones, brassiness and refreshes faded highlights leaving hair looking cleaner and brighter. Its unique formula, enriched with 11 amino acids and argan oil, moisturizes, strengthens hair structure and repairs surface damage while increasing shine and colour retention. Sulfate, salt and paraben free. Use: Apply to damp hair. Lather evenly and rinse. Repeat application, leave for 1 to 5 minutes and rinse. Can be mixed with Blacklight Blue Shampoo to customize dye deposit. Follow with Blacklight Nourishing Conditioner. Use gloves to avoid hand or nail staining.