Medical organizations around the world recommend broad spectrum SPF 30 or greater for daily use (4). While that may be enough for most people in their regular day to day lives, whether SPF 30 will be enough for you comes down to how much exposure you’re likely to get. Obviously, if you’re hanging outside at the beach all day, that’s going to have a different impact than spending the entire day indoors at the office. For days that you know you’ll be more exposed, reaching for a higher SPF 50 isn’t a bad idea. Don't forget a broad-brimmed hat and sunglasses.