Summer Fridays' Marianna Hewitt and Lauren Ireland Share Their Must Haves

Ireland would be remiss not to call out Summer Fridays's very own Jet Lag Mask ($49) as her travel must have. "This product was truly born out of a need during our personal travels," Ireland says. It's packed with niacinamide to brighten skin tone and improve texture, glycerin for long-lasting hydration, and hyaluronic acid to plump and draw more moisture into the skin.

Pro Tip: "I love having it in my carry-on to apply on my face while on the plane and also on my hands," Ireland says. Read our full Summer Fridays Jet Lag Mask review for more information.