Q. I’ll be outdoors a lot this summer, and I want to protect myself from insects as well as the sun. Would it be better to use a product that combines insect repellent and sunscreen, or two different products? What would be the best way to apply and reapply these products?

Pierre George, MD, practices general dermatology and Mohs surgery at Dermatology Consultants in St. Paul, MN.  He is the author of numerous articles and is a fellow of the American Academy of Dermatology, the American Society for Mohs Surgery, and the  American Society for Dermatologic Surgery.