Acidic Bonding Concentrate sulfate-free shampoo is Redken's most concentrated all-in-one formula to strengthen the resilience of all types of damaged hair. Its sulfate-free, ultra-rich formula exceptionally strengthens hair's resilience, deeply revitalizes, and protects against color fade.

The shampoo's concentrated bonding care complex contains citric acid to help strengthen weakened bonds for stronger hair. The acidic pH formula balances hair's pH to protect it from the damaging effects of coloring, styling tools, and even water. The result? Hair that looks and feels healthy!