Do You Still Need to Wear Sunscreen If You’re Inside All Day? Derms Weigh in (Real Simple Tips, Wednesday)

By Hana Hong At this point, the importance of applying (and reapplying) sunscreen whenever you’re outside has been drilled into your head. But now that everyone is staying inside for most—if not all—of the day, another question arises: do we really still need sunscreen? According to the experts, yes. It's equally—if not more—paramount to apply SPF even when you're inside. Here’s why: Sunlight contains ultraviolet (UV) radiation.