Redken Acidic Bonding Concentrate Leave-In Treatment - 150ml This bonding leave-in conditioner for damaged hair helps to strengthen hair, prevent breakage, and reinforce weakened bonds in the hair. Redken Acidic Bonding Concentrate Leave-In Treatment helps leave in repair and leave out damage. Benefits Combats 1 year of visible damage in 1 use Strength repair in 1 use Heat protection up to 450/230 degrees 88% visual reduction of in split ends Bond repair on the go 2x less breakage 10x smoother pH balancing Product did not strip hair color Ultimate repair, intense conditioning, and color fade protection Use Use as a complete system with Acidic Bonding Concentrate Shampoo and Conditioner. Apply to clean, damp hair. Leave in. Do not rinse. Style as usual. Avoid contact with eyes.