Should I wear sunscreen every day, even indoors?

Yes, daily sunscreen use is recommended even indoors. UVA rays penetrate glass windows and contribute to photoaging and skin cancer, meaning you are exposed even while sitting near a window or driving. Additionally, blue light from screens may cause some oxidative stress in skin. Forming a daily SPF habit ensures consistent protection regardless of your plans. Broad-spectrum SPF 30 or higher applied every morning is the single most impactful anti-aging step.