Skin can be damaged by the sun. Over time, this sun damage creates wrinkles, fine lines, and coarse texture. What's happened is that UVA has actually damaged the collagen in the layers of skin. In addition, "age spots" are actually spots of melanin production as a result of sun exposure!
What are UV rays?
The sun creates ultraviolet light in long waves (UVA) and short waves (UVB). UVB rays are what causes sunburns, and UVA rays are what cause long term damage. Both UVA and UVB can be blocked by a sunscreen with an SPF of 15 or more.
Slather on the Sunscreen
The bad news is, the sun can and does cause skin cancer. (I have fair skin and I'm terrified of the results of a few severe sunburns in my lifetime.) The best way to prevent sunburns, photoaging and skin cancer is the apply sunscreen liberally. Like, a real lot!
http://www.consumerreports.org/cro/news/2015/06/when-you-really-need-a-face-sunscreen/index.htm
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