The product: PH Perfecting Tonic ($90)
Barrymore's review: "There is one thing I will spoil myself with, and that's for my face. Call me vain. I don't care. If you use your products wisely they can really go the distance as well. I'm in the beauty game and I need to keep up. In every way. So I am going to put a few things out today that are... well, baller. We will call it #ballerbeautyday just one day of bling and dreams for skin."