This scalp serum is formulated to minimize the appearance of grey hair, reduce shedding, increase hair density, and promote hair growth in as little as 90 days. This scalp serum is formulated to minimize the appearance of grey hair, reduce shedding, increase hair density, and promote hair growth in as little as 90 days. Dubbed "the Meryl Streep of hair care" by Allure, Living Proof offers a diverse, award-winning collection of products that optimize the styling and health of your locks. Led by a team of world-renowned biomedical scientists and veteran stylists, the brand applies advanced technology to beauty challenges - and makes bad hair days a thing of the past.