Introducing the long-wearing Big By Definition Defining & Volumizing Mascara from Sephora. Through the use of plant-based proteins and vegetable-derived waxes, this ultra-black mascara not only provides fuller-looking, well-defined lashes, but also supports lash health. A clinical trial showed that 95% of women experienced fully revealed, defined, and separated lashes after 21 days of use, with 95% also reporting a multiplied lash appearance and a lash-by-lash effect. With an easy-to-remove formula that doesn't clump, run, or flake, this volumizing mascara is a must-have for every makeup lover.