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

Hewitt's everyday beauty must have is the Summer Fridays ShadeDrops Mineral Milk SPF ($36), which launched last year. "It is such a beautiful mineral formula that wears well under makeup," Hewitt says. "I use it as part of my morning skin-care routine every day."

Pro Tip: The formula is a lightweight serum that offers SPF 30 protection with zinc oxide. It also contains squalane for hydration and an antioxidant complex featuring vitamin E to defend against free radicals. Read our full Summer Fridays ShadeDrops Mineral Milk SPF review for more information.