Discover the magic of Joico K-PAK Color Therapy Luster Lock 5.1oz. This deep-repair miracle treatment for color-treated hair unlocks out-of-this-world vibrancy and a mirror-like shine, leaving your strands 9X stronger and visibly healthier-looking in just a single, 2-5 minute application. Simply apply to clean, damp hair, leave on for 2-5 minutes, rinse, and style as usual.