Backed by patented, trademarked, and active ingredients, Agent Nateur's revolutionary lash & brow serum is scientifically formulated to deliver ultimate nourishment that strengthens, conditions, and enhances eyelash and eyebrow follicles from root to tip. Improving flexibility, moisture, and shine, as well as helping lashes and brows to appear dense, fuller and more beautiful, this lash and brow serum is perfect for anyone who wants to strengthen and nourish a fuller, healthier and more vibrant set of eyebrows and eyelashes. And the even better news? It can be worn under mascara for a double dose of brow and lash power.