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Home > Wellness > Health Library > Ultraviolet Rays From the Sun
The sunlight that reaches the earth has ultraviolet A and
ultraviolet B (UVA and UVB) rays. These ultraviolet rays are the main causes of
damage to the skin from the sun. UVA and UVB rays affect the skin's sensitivity
to sun exposure in different ways.
Use a sunscreen that has a
sun protection factor (SPF) of at least 15 or higher.
Sunscreens that say "broad-spectrum" can protect the skin from ultraviolet A
and B (UVA and UVB) rays. Sunscreens come in lotions, gels, creams, and
Current as of:
June 4, 2014
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & H. Michael O'Connor, MD - Emergency Medicine
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