Our hair changes as we get older - it's just biology. We've formulated products designed to work with our unique hair biology, for women who know that spirit and confidence don't stop as we get older, and neither should beautiful hair. Hair Biology Silver & Glowing Purple Conditioner is specially formulated for grey hair and restores moisture, softness & shine. Purple formula helps correct yellow tones, so your true silver tones shine through. Free of parabens and infused with biotin. Discover the complete line of age-inspired hair care products from Hair Biology and fall in love with your hair again.