TWhat is it? The 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. This pH-balancing shampoo is specifically formulated with an acidic pH to defend against the negative effects of hair coloring, styling tools, and even water. The result? Hair that looks and feels healthy! Key Benefits: 56% less breakage* 82% less visible split ends** 11x smoother hair** pH balancing How to use Use as a complete regimen with Acidic Bonding Concentrate conditioner. Apply to wet hair, lather and rinse. Follow with Acidic Bonding Concentrate conditioner. In case of contact with eyes, rinse them immediately.