Redken's Acidic Bonding Concentrate Shampoo is a Sulfate-free all-in-one formula for strengthening and repairing all types of damaged hair. This ultra-rich and luxurious shampoo provide ultimate strength, repair, intense conditioning and colour fade protection. Formulated with 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 colouring, styling tools, and even water. The result? Hair that looks and feels healthy! For best results use alongside