Redken Color Extend Magnetics Mega Mask provides treatment care extender for color-treated hair. Sulfate free care provides 4 weeks of vibrancy and radiance*. Dual chamber design includes 2 different formulas: a mask that provides deep, intense conditioning, and an extender to provide benefits that last 3 washes. These 2 formulas combine during application to create the ultimate mask experience. New key ingredient, Redken's RCT Protein Complex, provides smart, targeted, customized care from the root, to the core, to the tip of hair.