Often foundations and concealers prompt you to choose a shade based on your undertone, especially when shopping online. But if you don’t know what your undertone is, that isn’t much help! Foundations usually come recommended for one of three undertone types: “cool,” “neutral,” or “warm.” It’s possible, though, to fall somewhere in between (you could be “neutral-warm,” for instance). To get you closer to finding the perfect match, we asked Greenberg to outline how to figure out your…
