Artifact

Sunscreen

Products applied to the skin to protect against the sun's ultraviolet rays.

4 links, 2 backed by primary records

Connections 4

Nambour skin cancer prevention trial daily SPF 15-plus use against use as people chose Scholarship & press 1

Proof 4 sources

Daily sunscreen application and betacarotene supplementation in prevention of basal-cell and squamous-cell carcinomas of the skin: a randomised controlled trial (abstract), The Lancet, 28 Aug 1999. Scholarship & press
daily application of a sun protection factor 15-plus sunscreen to the head, neck, arms, and hands
Application of sunscreen: theory and reality (abstract), Photodermatology, Photoimmunology & Photomedicine, 1 Apr 2014. Scholarship & press
The sun protection factor (SPF) of sunscreens are tested using a thickness of 2 mg/cm(2) , but investigations show that sunscreen under natural conditions is applied insufficiently with amounts about 0.39 to 1.0 mg/cm(2) , which decreases the protection factor considerably.
Sunscreen: How to Help Protect Your Skin from the Sun, U.S. Food and Drug Administration. Primary record
All sunscreens must be tested to measure the amount of ultraviolet (UV) radiation exposure it takes to cause sunburn when using the sunscreen compared to how much UV exposure it takes to cause a sunburn when not using the sunscreen.
A sunscreen product’s SPF value is primarily an indicator of the level of protection that product provides against UVB radiation, but broad-spectrum sunscreens also protect against UVA radiation.
How to apply sunscreen, American Academy of Dermatology. Primary record
At a minimum, most adults need about 1 ounce of sunscreen — roughly the amount to fill a shot glass — to fully cover skin not covered by clothing.

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