What It Is: Bobbi's secret to making eyes stand out is all about definition. This unique gel-based pencil delivers richly pigmented color and precision lining with sweat and humidity-resistant 12-hour wear. The best part? A twist-up design lets you apply on the go, while a built-in sharpener ensures the most precise application every time. What It Does: The perfect combination of waxes and emollients imparts intense, super-saturated color that doesn't flake and stays color true all day-for up to Bobbi Brown Perfectly Defined Long-Wear Gel Eyeliner-Beauty & Cosmetics