Introducing Redkens Acidic Bonding Concentrate 5-Minute Mask. Get Bond Repair for up to 3x stronger hair*, hydration & strength repaiR after every use. This intensely nourishing and hydrating mask is targeted at repairing hair from the deepest levels of damage and formulated with 16% Citric Acid, small enough to enter hair fibres and known to strengthen hair, and Conditioning Care Complex. This innovative bonding mask contains a high concentration of conditioning oils and cationic agent, offering up to 72 hours of ultra-hydration** and 2x more shine**. This quick and easy to use hair mask is perfect for all hair types and textures, including colour treated hair without stripping hair colour. Use as a complete system with the Acidic Bonding Concentrate Shampoo. After shampooing, apply to wet hair from mid-lengths to ends. Leave on for 5 minutes and rinse thoroughly. Use at least once per week or as often as needed. *Acidic Bonding Concentrate 5-min liquid mask vs. non conditioning shampoo**based on consumer test results In case of contact with eyes, rinse them immediately. Keep out of reach of children