Los Angeles-based Cassell has been doing makeup for six years and hair for 14 ― two skills she brought to the set of “Black Is King.” Cassell did hair for the kids in the “Mood 4 Eva” segment and the makeup for models Adut Akech and Aweng Chuol in “Brown Skin Girl.” As a makeup artist, her work often features a radiantly velvet complexion and flashes of vivid color, blown out to keep the focus on a client’s natural beauty. “Makeup doesn’t always have to be so heavy or over the top,” Cassell told HuffPost. “Sometimes less is more.” Fittingly, her must-haves are all about versatility and ease.