Instantly replenish your hair's moisture levels with Redken Extreme CAT Protein Treatment. Redken's patented taurine technology and cationic proteins help reconstruct and fortify your damaged hair leaving you with soft, silky locks. Redken's 3D Repair Complex builds long lasting strength and conditioning into your hair leaving it healthier and more manageable. The Extreme CAT Protein Treatment is specially formulated to provide a triple line of defence; proteins penetrate deep into the core of your hair helping build internal strength; ceramide enters the cuticle layers to reinforce the structure and help repair any damaged areas; and natural lipids, like those found naturally in your hair help to resurface your hair leaving the cuticles shiny, smooth and protected. Directions for use: After shampooing, squeeze excess water from your hair. Apply CAT Treatment and lather. Leave on for 3-5 minutes and rinse.