You'd think some form of highlighter would be key to the ultimate dewy makeup look — but Hughes surprised here too: She actually used oil (Elemis Superfood Facial Oil, $55, to be exact) to create the enviably glow-y look, brushing the stuff on with a light hand, using a fan brush.
Another hack? You might not actually need primer or powder, especially if you have dry or normal skin (Hughes asserts that they're better options for those with oily skin).
That said, if you do decide to add primer to your makeup look, less is more — "one half pump will do," says Hughes. She also recommends Elemis' new Pro-Collagen Insta-Smooth Primer, $78, saying that it's "not silicone-y" and "not plasticky" (a must with any primer worth its salt).