PRICE IS FIRM NEW UNOPENED. Bottles are still packed in box they came in when they were delivered to me from beauty supplier (L’Oréal). That’s also unopened. 100% Authentic Redken Acidic Bonding Concentrate Shampoo is Redken's most concentrated all-in-one formula for strength repair for all types of damaged hair. This ultra-rich and luxurious sulfate-free shampoo provides ultimate strength repair, intense conditioning and color fade protection. Featuring Citric Acid, this shampoo contains a concentrated bonding care complex that reinforces weakened bonds within your hair to improve hair strength and resiliency. This pH-balancing shampoo is specifically formulated with an acidic pH to defend against the negative effect of hair coloring, styling tools, and even water, which has a pH of 7, to balance hair's pH back into a healthy range of 4.5-5.5. The result? Healthier looking and feeling hair. Key Benefits: 56% less breakage* 82% less visible split ends** 11x smoother hair** pH balancing For all hair types & textures Ultimate repair, intense conditioning & color fade protection Contains Citric Acid, an alpha hydroxy acid, which helps reinforce weakened bonds