Great looking hair doesn't stop at 50. We've formulated products that are specifically designed to work with our unique hair biology to give you amazing looking hair at any age. Hair Biology Color Sealing Mask features biotin-infused conditioning technology that helps seal damaged hair surfaces, protecting from fade-out to keep color vibrant 2X longer. Made with biotin and free of sulfates, parabens and dyes, our Vivid & Protected Collection is specifically formulated to be safe for color-treated grey hair. Discover the complete line of age-inspiring hair care products from Hair Biology and fall in love with your hair again.