Sunscreens Flashcards by Sarah Bernard | Brainscape

Q

What are the elements of the best sunscreen?

A

absorbs/scatters ‘broad spectrum’ UV radiation from 280nm thru 400nm.
photostable while out in the sun

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Q

What does SPF measure?

A

UVB + erythema of skin

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Q

What does PFA measure?

A

UVA + darkening of skin

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Q

What is the critical wavelength for a broad spectrum claim?

A

> 370

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