Redken Acidic Bonding Concentrate Sulfate-Free Conditioner is Redken's most concentrated all-in-one formula for strength repair on all types of damaged hair. This ultra-rich and luxurious bonding conditioner provides ultimate strength repair, intense conditioning and hair color fade protection. Featuring Citric Acid, this conditioner contains a concentrated bonding care complex that reinforces weakened bonds within your hair to improve hair strength. This pH-balancing conditioner is specifically formulated with an acidic pH to defend against the negative effects of hair coloring, heat styling tools, and even water. The result? Hair that looks and feels healthy!