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

The shampoo’s concentrated repair complex contains citric acid to help strengthen weakened hair bonds and make hair stronger. The pH-balanced formula helps balance the hair’s pH to protect it from the damaging effects of hair coloring, styling tools, and even water. Result? The hair looks and feels healthy!