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2. 13 facial sunscreens dermatologists actually recommend to ...

   www.aol.com/news/13-facial-sunscreens...

   Whether you love it or love to hate it, sunscreen is a critical part of any skin care routine. This multitasking product helps shield your skin from harmful UV rays, fends off nasty sunburns, and ...

3. Sunscreen - Wikipedia

   en.wikipedia.org/wiki/Sunscreen

   [120] [144] [134] [124] [145] [122] [125] Since sunscreen's active ingredients work preventatively by creating a shielding film on the skin that absorbs, scatters, and reflects light before it can reach the skin, UV filters have been deemed an ideal “first line of defense” against sun damage when exposure can't be avoided.

4. Health effects of sunlight exposure - Wikipedia

   en.wikipedia.org/wiki/Health_effects_of_sunlight...

   Sunbaker, by Max Dupain. Exposure of skin to ultraviolet radiation from sunlight presents both positive and negative health effects. On the positive side, UV exposure enables the synthesis of vitamin D 3, which is essential for bone health [1] and potentially plays a role in inhibiting certain cancers.

5. Ultraviolet - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet

   Extremely hot stars (such as O- and B-type) emit proportionally more UV radiation than the Sun. Sunlight in space at the top of Earth's atmosphere (see solar constant) is composed of about 50% infrared light, 40% visible light, and 10% ultraviolet light, for a total intensity of about 1400 W/m 2 in vacuum.

6. Does UV Light Kill Coronavirus? - AOL

   www.aol.com/lifestyle/does-uv-light-kill-corona...

   There are different types of UV light. There are various kinds of UV light, all originating from the sun (or from UV light-emitting devices.). Only one type of UV light is likely to be effective ...

7. Ultraviolet germicidal irradiation - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet_germicidal...

   A low-pressure mercury-vapor discharge tube floods the inside of a biosafety cabinet with shortwave UV light when not in use, killing microbes on irradiated surfaces. Ultraviolet germicidal irradiation (UVGI) is a disinfection technique employing ultraviolet (UV) light, particularly UV-C (180–280 nm), to kill or inactivate microorganisms ...