Aug 18, 2015 @ 12:00 pm

Welcome to I'm Obsessed, a daily video series with Kahlana Barfield, InStyle's fashion and beauty editor at large. Check back every weekday to learn more about the beauty products and tools she can't get enough of.

Regardless of whether tonight’s look calls for strobing, contouring, or baking, our favorite beauty techniques are each reliant on one key factor: precision. For eyes that pop just the right amount, we return to Hourglass’s 1.5 millimeter Mechanical Gel Eye Liner, a pencil-thin tool that leads to accurately drawn lines minus the often unfortunate smudge. As the name implies, the handheld liner is strikingly thinner than most and, not surprisingly, also dispenses the perfect dose of its formula. You’ll be set with just two simple clicks of the pen. 


Shop it: $16;

Watch the video above to learn why Barfield loves it—and visit tomorrow for more of our favorite must-haves.