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 Volumizing Conditioner uses lightweight nourishment to bring back fullness and softness to fine, thin, or flat hair. Made with biotin and free of parabens, our Full & Vibrant Collection is specially formulated to be safe for color-treated and aging hair. Discover the complete line of age-inspiring hair care products from Hair Biology and fall in love with your hair again.