The product: Shiffa Rose Maroc Night Elixir ($175)
Barrymore's review: "This one is the most expensive. It's Shiffa Beauty. But it's so amazing! If you use one pump on your face every night, it could be worth it. It will last awhile. And it is like nothing I have tried in a while . . . It just sits on the skin like liquid gold, slowly absorbing into the skin. Wow."