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2. Sunscreen - Wikipedia

   en.wikipedia.org/wiki/Sunscreen

   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 [65] (mg/cm 2). It is important to note that sunscreens with higher SPF do not last or remain effective on the skin any longer than lower SPF and must be continually ...

3. We asked a dermatologist the most common questions about SPF ...

   www.aol.com/lifestyle/asked-dermatologist-most...

   Dr. Linkner: The most important part of a sunscreen label is the SPF or the sun protection factor level which gives you the interval time frame of which the sunscreen will prevent you from ...

4. Does sunscreen expire? Should you wear it indoors ... - AOL

   www.aol.com/lifestyle/does-sunscreen-expire-wear...

   So how do the different levels of SPF measure up? According to the MD Anderson Cancer Center, an SPF 15 sunscreen blocks 93% of the sun’s harmful UVB rays, and SPF 30 blocks 97%. Once you get ...

5. Sun tanning - Wikipedia

   en.wikipedia.org/wiki/Sun_tanning

   In 1962, sunscreen commenced to be SPF rated, although SPF labeling in the US was not standardized by the FDA until 1978. In the 1970s, Mattel introduced Malibu Barbie, which had tanned skin and further popularized sun tanning among women. [44] [45] In 1978, both sunscreen with an SPF 15 rating as well as tanning beds first appeared.

6. The CDC’s advice for sunscreen and when to wear it, even in ...

   www.aol.com/cdc-advice-sunscreen-wear-even...

   A broad spectrum sunscreen with an SPF of 15 or higher is recommended by the CDC. The CDC also warns that sunscreen should be used alongside other protective measures, such as limiting time in the ...

7. Bemotrizinol - Wikipedia

   en.wikipedia.org/wiki/Bemotrizinol

   Bemotrizinol (INN [1] [2] /USAN, [3] INCI bis-ethylhexyloxyphenol methoxyphenyl triazine) is an oil-soluble organic compound that is added to sunscreens to absorb UV rays. It is marketed as Parsol Shield, Tinosorb S, and Escalol S. Bemotrizinol is a broad-spectrum UV absorber, absorbing UVB as well as UVA rays.

8. An Expert Explains Which SPF Is Best for Protecting ... - AOL

   www.aol.com/expert-explains-spf-best-protecting...

   Understanding the numbers on a sunscreen bottle to pick which SPF is best, as well as how often to apply sunscreen is the key to preventing skin cancer.

9. Certified Organic Sunscreen - Wikipedia

   en.wikipedia.org/wiki/Certified_Organic_Sunscreen

   Generally speaking, sunscreen has photo-protective properties that reduce the risk of skin cancer and ageing with relation to the SPF value and proper application. [5] [6] Certified organic sunscreen is part of a broader trend towards certified organic cosmetics [7] and certified natural cosmetics. [8]