At Dior’s pre-fall ready-to-wear show, held in the atrium of the Brooklyn Museum in April, an unseasonable mugginess permeated backstage amid blaring hair dryers, chattering models and bustling publicists. But Peter Philips, Dior Makeup’s creative and image director, didn’t break a sweat. Philips was cool as a cucumber in the midst of the flurry, directing…
