Acidic Bonding Concentrate sulfate-free shampoo is Redken's most concentrated all-in-one formula for strength repair on all types of damaged hair. BEST FOR: • Damaged Hair • All Hair Types & Textures • Safe for Color-Treated & Chemically-Processed Hair KEY BENEFITS: • Combats 1 year of visible damage in 1 use* • 56% reduction in breakage** • 2x stronger** • 14x smoother*** • 90% more conditioned*** • 82% visible reduction of split ends**** • pH balancing • Ultimate repair, intense conditioning, and color fade protection • Citric Acid, an alpha hydroxy acid, which helps reinforce weakened bonds in the hair