Emma Chamberlain keeps her makeup minimal on nights out because she’s bound to sweat it off. The 22-year-old social media influencer opts for natural skin, lots of bronzer, a chunky lash and a “solid lip combo” to keep things simple. She told InStyle.com: “I like super natural skin just because [makeup] ends up coming off anyway, so I don’t want to overdo it. But I’m definitely bronzing it up; it’s a key moment. I’m bronzing up the eye, too! And then a chunky lash, too, kind of. Not too chunky. And a really solid lip combo. I like it to be simple because over the course of the night, you’re sw…