Why I Wear Sunscreen Indoors—and How to Pick a Better SPF

A Washington Post Well+Being column by Dr. Trisha Pasricha explains that UVA rays can penetrate windows, so wearing sunscreen indoors helps prevent aging and skin cancer. It recommends mineral sunscreens with iron oxide for protection against visible light and for many skin tones, notes that SPF 30 provides substantial UVB protection, and emphasizes choosing a broad-spectrum product. The piece also offers four practical tips for buying an effective sunscreen.