Fact: We love a good beauty hack. So far, we’ve learned that you can use nipple cream as lip balm from Margot Robbie, a toothbrush as a foundation applicator from, again, Margot Robbie (girl’s got a lot of hacks), and Elmer’s glue as brow gel from Beyoncé. Next up to the spread the wisdom is “Black-ish” star Yara Shah...