The Beauty Team Behind The Perfectionists Had Their Work Cut Out For Them

"The key to any great beauty makeup is great skin," Cousineau said. "Our cast takes such good care of their skin, but because they're spending 15 to 16 hours a day in makeup, it needs time to breathe and reset. My favorite skincare product — certainly these days, and it's the buzzword for everyone — is a hyaluronic acid serum. I like the iS Clinical Hydra-Cool Serum ($90). It's a lightweight moisturizer that's like a drink of water for your skin, and it's lovely under foundation. It's great for touch-ups when you need a little hydration. It is definitely my go-to for midday moisturizing. I keep one of them with each of my makeup artists."