Have We Been Applying Sunscreen Wrong This Whole Time?

Photo: Eva Herzigova by Mario Testino for Vogue Paris, April 1998 I'm not sure where I first heard that sunscreen should be the final step in my skincare routine, but I've been doing it this way forever: serum, moisturizer, sunscreen, makeup. Turns out I might have it completely backwards. According to Rachel Nazarian, MD of New York's Schweiger Dermatology Group, chemical sunscreens -- A.K.A. ones with active ingredients such as octinoxate and avobenzone -- should actually be the first product ...