Mind the Nose and Feet
Protruding horizontal surfaces like the nose present special sun protection problems. Lifeguards often wear zinc oxide paste on their nose, but it only provides an SPF of about seven. Instead, apply a sunscreen with an SPF of at least 15, let it soak in a few minutes, and then, for maximum protection, apply the zinc oxide paste. And if you'll be going shoeless, you'd be wise to use the same level of protection on the tops of your feet.