The Redken Acidic Bonding Concentrate Shampoo is our most concentrated all-in-one formula for strength repair for all types of damaged hair. This rich, luxurious vegan & sulfate-free shampoo provides ultimate strength repair, intense conditioning & color fade protection. You’ll see immediately visible results with this product. Apply to wet hair, massage into a lather, rinse. Follow with Conditioner and Leave In Conditioner. Use daily.