If you are going to be out in the Sun for a long time you need to wear a sunscreen or sunblock. These lotions contain chemicals that absorb certain harmful rays of the Sun (ultraviolet rays), keeping them from penetrating your skin. This protection is important because these rays can hurt you, causing painful sunburns that damage the tissues beneath the surface of your skin. Damaging your skin’s deep elastic layer makes it look old and wrinkled a lot earlier than it should.
Sunscreen’s the one beauty product that helps prevent skin cancer and premature aging (and by this I mean all those lines, wrinkles, and spots that you otherwise wouldn’t get until you’re 70 if you stayed indoors.)