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Identifying skin neoplasms benign vs. malignancy - page 15 / 24

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Sunscreen protection

Sunscreen

15-30minutes before exposure, SPF 30 or higher

SPF –sun protection factor

SPF 15 allows 15 times longer in the sun

Re-apply in 2hrs

One teaspoon rule:

face including ear and neck

front body

Back of body

Each arm or leg not covered with clothing

Damage protection 15=92%, 30=97%, 40=97.5%

Physical (barrier) both UVA/UVB -titanium dioxide, zinc oxide, talc

Can stain clothing

Chemical (absorb)  suncreens

UV B radiation; para-aminobenzoic acid (PABA), salicylates, camphor derivatives, and cinnamates

UVB and UVA ; Benzophenones

Coppertone “shade” SPF45 sunblock with parsol

Neutrogena Ultra Sheer Dry-Sunblock

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