The grind doesn't stop for the dizzy masterminds at Glossier, who launched his first eyeliner pen today. As a recent eyeliner mug, I was intrigued when the pink bag landed on my desk. Eyeliner has always scared me: pulling a perfect, sharp wing is daunting enough, but to fit it? Scary. Eventually, I stopped doubting myself (later from my therapist) and drank the eyeliner. I've tried quite a few eyeliner pens – but how does Glossier measure them?