Your Official Sun Care Cheat Sheet

There are two primary types of ultraviolet (UV) rays produced by the sun: UVA and UVB. Both can damage your skin, but the way they cause damage is different. UVA rays affect the deep layers of our skin. They're the primary cause of premature signs of aging, including wrinkles, fine lines, skin laxity and hyperpigmentation. (A good way to remember is to pretend the "A" stands for aging.) They are also primarily responsible for skin cancer.

"UVA rays account for about 95 percent of radiation that reaches the Earth's surface," notes Dr. Annie Gonzalez, board certified dermatologist at Riverchase Dermatology. "UVA rays are also the main type of light used in tanning beds."

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