Sun protection

Sunlight carries invisible UV (ultraviolet) light that damages skin cells and causes most skin cancers, and much of it gets through cloud. When the UV index is 3 or more, shade and clothes protect best, with a hat, sunglasses that block UV, and SPF 30 or more on the skin you can't cover. Sunbeds raise the risk of skin cancer; a little sun is enough for vitamin D.

Watch · Depth 1 · 67 sThrough the cloudsA cool, grey day at the beach, and sore pink shoulders by evening. Why invisible UV light gets through cloud, what the UV index tells you, and the order to protect yourself in, shade and clothes before sunscreen.