The Best Precision Eyeliners of 2025As someone with heavier eyelids, I’ve learned that a fine-tip liner is truly essential for achieving precise definition. When it comes to a classic cat-eye, a precision liner is my secret weapon for a sharp, clean wing—no tedious concealer clean-up required. When it comes to creating the thinnest possible line (and a sharp wing), Donni admits she reaches most often for liquid felt-tip pens. Donni’s Wing Hack GuideStep 1: “First, start with , Half Magic’s silicone wing guide to perfectly place your wing and get a super straight edge. That firmness gives you control to go back over the edge and pick up the liner only where you touch it.