Highlighting Duo in 7 Day Weekend (Metallic Orchid) & Poolside (Metallic Violet) Like the bestselling Killawatt you know and love, Killawatt Foil keeps skin lit beyond sundown with its weightless longwear formula — a cream-powder hybrid that instantly melts into skin and blends with almost zero effort. Another win: It’s loaded with extra fine, ultra-smooth shimmer to make all your hyper-metallic gleams come true.