OLIGO PROFESSIONNEL – Blacklight Blue Shampoo – Sulfate-Free Blue Shampoo for Blonde and Color Hair – Revive Treated Hair – Refreshes Faded Highlights – 11 Amino Acids and Moisturizing Formula – 8.5oz

Customers find the shampoo effective at toning brassy blonde hair and making gray hair look shinier and whiter. The product receives positive feedback for its pleasant fragrance, and while some say it leaves hair soft, others report it's not moisturizing enough. Several customers note that the product comes partially leaked everywhere. Customers consider the product expensive for the amount received.