Scarlett Johansson's Must Haves: From a Prada Purse to a Niacinamide Cream

Although her schedule is ever-changing, Johansson knows the value in having a consistent evening routine — especially for her skin's sake. She'll start by washing her face with a gentle cleanser and then follow it up with this The Outset Restorative Niacinamide Night Cream ($54), which works to reduce redness and improve the skin's barrier. "If I have a few extra minutes, I'll [also] apply the Purifying Clay Mask for 10 minutes as a nice detox at the end of the day," she adds.