Poorna Jagannathan's Must Haves: From a Hot-Towel Warmer to a Travel Beauty Case

While she believes that having a staple morning routine is important, Jagannathan also thinks a good nighttime routine can make all the difference in your skin's quality the next day — which is why she's such a fan of the Dr. Barbara Sturm Hyaluronic Serum ($110). The actor believes it's her ultimate trick for waking up with "great, hydrated, happy skin."

Pro Tip: The brand recommends applying a few drops of the serum into your palm then gently patting the formula into your skin. Allow the serum to absorb for about 30 seconds before applying any other products.