It's a proven fact that overexposure to the sun will cause your skin a whole lotta problems as you age. The best way to make sure you avoid these preventable problems is to choose a sunblock containing zinc oxide or titanium dioxide and use it, regularly. Anytime you're going to spend any amount of time outside, apply a coat and don't forget to reapply as the day goes on, regardless of whether it's a bright and sunny or an overcast day. You can also reduce wrinkles around your eyes by wearing sunglasses and not squinting your eyes.