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 Shampoo uses weightless cleansing and hydration to bring back fullness to fine, thin, or flat hair. Made with biotin and free of parabens and dyes, our Full & Vibrant Collection is specifically 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.