The Skin Care Essentials Pro Makeup Artists Pack in Their Kits

Tom Pecheux told us backstage at Derek Lam that he uses a combination of three formulas — an oil, a cream, and a "smoothing veil" — to make his models look flawless before he applies their makeup. While the first two products vary depending on the models' skin and his mood, he swears by this Estée Lauder serum ($82) and declares it an essential final step.