When hair is extremely damaged, give it strength with the Redken Extreme CAT Protein Reconstructing Treatment. This intensive treatment is just the thing when hair feels like it's on the brink, offering a concentrated dose of conditioning care enriched with essential proteins. Not only does it reinforce your skin's resilience & condition, it also protects against future damage from chemical treatments & hair dying. Lightweight & easy to use, this occasional treatment boosts the overall health of your hair & helps it to recover from persistent damage. After shampooing your hair, squeeze out all of the excess water & spray the Extreme CAT Protein Reconstructing Treatment from lengths to ends. Leave for 3-5 minutes before rinsing out thoroughly & following with your conditioner.