Brows can make or break a beauty look—just ask YouTube guru AlisonLovesJB , who always gives her arches "a little somethin'" no matter what look she's going for. Here, the vlogger shows you how to frame your face using Maybelline New York Define + Fill Duo , a double-ended tool with a pencil for defining your shape and a spongy side loaded with powder to fill and finish. Watch this step-by-step and discover why brows should *always* be part of your regimen. Follow Marie Claire on Instagram for the latest celeb news, pretty pics, funny stuff, and an insider POV.