Dr. Shereene Idriss's Must Haves: From Silk Pajamas to a Diaper Rash Cream

Dr. Idriss discovered the versatility of the Triple Paste Diaper Rash Cream ($17) as a skin-care product through motherhood. "It is a cream that is designed for your baby's bottom, especially when they have irritation," she says. Dr. Idriss likes to use it as an overnight treatment mask, or for "face basting," when her skin feels inflamed or irritated. "It's a combination of petrolatum, which is like Vaseline, and zinc oxide, which is very soothing and has anti-inflammatory properties," she says. She recommends this product for anyone who wants to lock in hydration, whether you have really dry skin or an inflamed skin barrier.

Pro Tip: Dr. Idriss notes that because it is thick and leaves a white cast, it's best not to use it in the morning. "A little bit goes a very long way," she says.