We’ve all heard that it’s important to use some kind of sun protection. But what exactly does the sun do to our skin? Sunlight emits two kinds of ultraviolet radiation: short-wave UVB and long-wave UVA, which cause damage to cells, DNA and collagen. This leads to skin cancer and photo-aging (wrinkles, decreased elasticity and pigment spots) of the skin. Despite mainstream thinking, we actually get most of our sun exposure while driving, walking into the grocery store or taking the dog for a walk. The time we spend outdoors for pleasure, work or sport just adds to the exposure. Ultraviolet damage is cumulative, so every minute outside counts toward increasing your risk. This means we need to change the way we think about protecting ourselves from the sun.