Lauren London's Must Haves: From a Cozy Tea to a Calming Complexion Serum

For London, a great beauty routine involves this PurpL & Prosper Calm Complexion Serum ($23), which is just one of many skin-care products she loves — and "uses constantly" — from the woman-owned brand. "It's organic, natural, clean, and made with such integrity; the woman who makes it has very clear intentions for this brand. So, it feels good to use something that you know the person making it really cares about," says London.

Pro-Tip: As for how best to use it in an everyday skin-care routine, London explains: "It really is very gentle. In the morning, I follow it with a moisturizer, but not at night. And I have never had a breakout with it."