Courtesy of CécredCourtesy of Cécred“We began developing the Restoring Lash & Brow Builder after seeing the overwhelming love for our Restoring Hair & Edge Drops,” says professional trichologist and Cécred’s director of education, Kari Williams. The $48 serum also contains Cécred’s patent-pending Bioactive Keratin Ferment that deeply penetrates the cortex of your lash and brow hair. While I’ve never really been one to use a lash serum, the Restoring Lash & Brow Builder makes it easy and feels like running water over your lashes. Final rating: 4.5/5The Restoring Lash & Brow Builder works similarly to my beloved Restoring Hair & Edge Drops, providing noticeable growth over time in the areas where I need it most. Cécred’s Restoring Lash & Brow Builder is available exclusively at and online and in-store at Ulta starting September 19.