"Back-Combing" Lashes and Other Tips From Jennifer Lopez's Makeup Artist Scott Barnes

In a video with Tati Westbrook, Barnes revealed that he loves to use makeup products for multiple purposes. "[They make you think that] you need an eye primer, and then you need the eye shadow, and then concealer. . . . You're walking away with all these things when you could just get two things and do a whole face with it," he said.