Combat 1 year of visible damage in 1 use* with award-winning, professional bond repair range Acidic Bonding Concentrate by Redken. Redken Acidic Bonding Concentrate Shampoo is Redken's concentrated all-in-one formula for all hair types and textures. This ultra-rich and luxurious shampoo provides intense conditioning, reduced breakage and color fade protection. Featuring Citric Acid, an alpha hydroxy acid within our concentrated bonding care complex that conditions to help protect weak bonds and helps to improve hairs strength and resiliency after a bleach or color services. This pH-balancing shampoo is specifically formulated with an acidic pH to help to defend against the potential negative effects that can be caused by hair coloring, lightening and heat styling. The result? Hair that looks and feels healthy! *System of Acidic Bonding Concentrate Intensive Pre-Treatment, Shampoo, Conditioner & Leave-In vs. undamaged hair.