Why Some Sunscreens “Fail” in Winter Sun — UV Physics, Not Myths
• Winter sun can be deceptive; UV rays, especially UVA, are still present and potentially harmful.
• Snow and ice reflect UV rays, significantly increasing exposure and the risk of sunburn.
• Proper sunscreen application, including using a broad-spectrum SPF 30+ and reapplying every two hours, is crucial even in winter.
Sunscreen effectiveness in winter: UV physics matters
Many believe sunscreen is only needed in summer. However, harmful UV rays are present year-round, even on cloudy days. A common question arises: why do some sunscreens seem to fail in winter, even when correctly applied?
Related News