Benefits of Redken Acidic Bonding Concentrate Duo Acidic Bonding Concentrate duo Repair and strengthen your hair with this transformative Acidic Bonding Concentrate duo containing Redken Acidic Bonding Concentrate Shampoo 300ml Redken Acidic Bonding Concentrate Conditioner 300ml Cleanses strengthens and intensely conditions hair The Acidic Bonding Concentrate Shampoo works to cleanse strengthen and intensely condition hair while reinforcing weakened bonds Adds beautiful shine Super hydrating and restoring the Acidic Bonding Concentrate Conditioner helps seal the cuticle and adds beautiful shine so hair is left looking and feeling smoother and healthier with natural movement Perfect for damaged demanding and processed hair Formulated with citric acid and a concentrated bonding care complex this advanced shampoo and conditioner are perfect for those with damaged demanding and processed hair