This LA-based brand is a staple for so many celebrity makeup artists because their products are designed to be stunningly subtle, and look super flattering on every skin tone. Basically, Jouer is your go-to underground brand for looking bright and fresh-faced. Stiles’ favorite product? The Luminizing Moisture Tint, $38. “I cannot live without it,” she says. “Use it alone if you just need a little glow for an evening out, or mix it with other foundations to make them luminous. I truly cannot work without this product.”

Where to get it: JouerCosmetics.com