The first step in Redken's Acidic Bonding Concentrate regimen, the Intensive Pre-Shampoo Treatment provides strength repair in 1 use*. With Redken's highest level of Citric Acid + Bonding Care Complex, this rinse out treatment provides 14x smoother hair* and 63% less breakage*. The concentrated intensive treatment formula reinforces weakened bonds and prepares hair for the full benefits of the Acidic Bonding Concentrate Shampoo and Conditioner.