There are good lashes, and then there are great lashes. The latter is what we aim for, but it’s a task not easily achieved by just any mascara. Sure, you could spend years scouring for The One, but we say you have better luck investing in a trusty mascara primer. The best ones prevent smudging, smearing, and flaking, boost lashes to fantastical heights, and coats them in a nourishing substance to strengthen these dainty hairs in the long-run. Talk about a multi-functional powerhouse — and an extra step to our makeup routine we’d gladly act upon. Scroll on to shop our picks, below.