Everyone should know about the importance of protecting the skin against the harmful rays that are emitted from the sun. While there are many factors that determine at what rate our skin will age, the sun accounts for the large majority of symptoms associated with premature aging. No wonder the experts are constantly encouraging us to use sunscreen. Peter Thomas Roth In Sun products offer an impressive variety of options that allow you to get broad spectrum protection against both UVA and UVB rays. This way you can guard against both burning and cell damage that can cause your skin to look older than it really is.