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2. Sunscreen - Wikipedia

   en.wikipedia.org/wiki/Sunscreen

   The sun protection factor (SPF rating, introduced in 1974) is a measure of the fraction of sunburn-producing UV rays that reach the skin. For example, "SPF 15" means that 1 ⁄ 15 of the burning radiation will reach the skin, assuming sunscreen is applied evenly at a thick dosage of 2 milligrams per square centimeter [ 68 ] (mg/cm 2 ).

3. The best sunscreens dermatologists use - AOL.com

   www.aol.com/lifestyle/best-sunscreens-summer...

   Two experts we spoke with — Dr. de Moll and Dr. Magovern — recommend EltaMD UV Clear for those with oily, acne-prone skin because of its lightweight, oil-free formula that won't clog pores. It ...

4. Ultraviolet index - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet_index

   The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn -producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general public. The UV index is designed as an open-ended linear scale, directly proportional to the ...

5. Sun protective clothing - Wikipedia

   en.wikipedia.org/wiki/Sun_protective_clothing

   UPF (ultraviolet protection factor) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to SPF (sun protection factor) ratings for sunscreen. While standard summer fabrics have UPF ~6, sun protective clothing typically has UPF ~30, which means that only 1 out of ~30 units of UV will pass through (~3%).

6. Do you know how the sun impacts your skin? SPF, skin ... - AOL

   www.aol.com/know-sun-impacts-skin-spf-093026185.html

   Levin also cautions people this summer to seek shade during peak sun (10 a.m. to 4 p.m.) and avoid tanning beds as they're also associated with significant skin cancer risk.

7. My Secret to All-Day Sun Protection? These Sunscreen Sticks - AOL

   www.aol.com/secret-day-sun-protection-sunscreen...

   Sun Shield On-The-Glow transparent Stick Sunscreen SPF 40. My vibe is wet, glossy, glowy skin à la Hailey Bieber, which is why I stan this sunscreen stick from Kopari.It mimics a highlighter ...