Sunscreen protects the skin from ultraviolet (UV) rays from the sun. Applying sunscreen before spending time outdoors can help lower your risk for sunburn and skin cancer. Using sunscreen past its ...

You finally unpack the summer gear—floaties, beach towels, pool toys, a rogue flip flop—and voila! You spot a bottle of unused sunscreen. Discovering an old sunscreen stash is definitely convenient, ...

How long does sunscreen last before it expires? Live Science: Rigoberto Advincula, professor of macromolecular science and engineering, explained some of the ingredients in sunscreen and which of them ...