Redken Acidic Bonding Concentrate Intensive Pre-Shampoo Treatment for Damaged Hair helps strengthen even the most damaged hair in 5 minutes. Redken Bonding Care Complex strengthens hair from the inside out**with continued use of Acidic Bonding Concentrate Intensive Treatment, Shampoo and Conditioner Benefits: —Repairs hair strength against damage —Protects against color fade —Conditions hair —Reinforces weakened bonds in hair to improve strength and resiliency —pH balancing formula defends against the negative effects of hair coloring and heat tools