Jun 11, 2015 @ 12:00 pm

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

If you walk into any public restroom and find a line of women standing in front of the mirror sucking their cheeks inward, don't be surprised. These ladies are doing the "duck face" in an effort to create their best contoured cheekbones. The makeup trend has taken the beauty world by storm, especially with fan-favorites like Kim and Khloe Kardashian often showing off the look on Instagram. 

In the video above, Barfield offers solid advice and explains why Lancome’s Le Duo Contour and Highlighter Stick is every girl’s dream come true. Available in five shades, the double-sided product comes with a matte color on one side and a shimmery hue on the opposite.

Credit: Courtesy (3)

Shop it: $36 each;

Watch the video above to learn how Barfield uses it—and head to tomorrow to see what she’s obsessed with next.