Acidic Perfecting Concentrate leave-in treatment is Redken's most concentrated all-in-one formula for strengthening 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 fading.

The concentrated repair complex in the leave-in treatment contains citric acid to help strengthen weakened hair bonds for stronger hair. This treatment strengthens the resilience of damaged hair, protects it up to 450 degrees, tames frizz, adds shine, and reduces breakage.

Its acidic pH formula balances the 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!