When celebs lie down for a facial with Thuyen Nguyen, they know they’re about to enjoy one last hour of relaxation before the craziness of hair, makeup, and wardrobe ensues. Nguyen, who has become a go-to for Michelle Williams, Jennifer Aniston, and Uma Thurman, and is known for turning hotel beds into impromptu spas—so his clients often nap while he massages their faces for their red carpet debut.

At this year’s Met Gala, the former masseuse turned skin magician was tasked with de-puffing the visage of co-chair Amal Clooney, in addition to Katy Perry and Cindy Crawford…and a few others. Here, Nguyen took us behind the scenes as he ran from one Upper East Side hotel to the next to give Hollywood’s best a heavenly glow.