What better way to put your new eyeliner to the test than to workout in it? Spare me the dramatics, I know you're not supposed to exercise in makeup, but if the Flypencil is as transfer-proof as it claims, it should be no match for a HIIT session. I walked into my workout session full of life and left with aching limbs, a sore core, and my eyeliner still intact. But once I reached home, I realized my eyeliner lacked the bold, dark luster it had when I applied it in the morning and was slightly faded in the corners of my eyes, likely due to a mix of my sweat and tears—no blood, thankfully. But after an eight-hour workday and an hour-long HIIT class, can I really be mad? 7/10 Choose an edition: A hyper-saturated, water-resistant, liquid eyeliner with an innovative flex tip and easy-grip triangle shape for effortless, no-limit lining that lasts.