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2) SPF clothing -- cool activewear made of SPF 50 fabric -- has finally become widely available.
SPF 15 blocks about 94% of UVB rays, SPF 30 blocks about 97%, and SPF 45 blocks about 98%.
SPF 30+ Sunscreen Swipe.
SPF 233 — Close your eyes.
SPF 233 is not inexpensive.
2. Estée Lauder Sun Performance SunCare Collection Oil-Free Multi-Protection Sun Spray with SPF 15, $22.
Nicknamed "SPF 50" in high school.
SPF 4 — You're joking, right?
Is SPF 60 really that much better than SPF 30?
So even an SPF 85 or SPF 100+ needs to be diligently reapplied.
The difference in UVB protection between an SPF 100 and SPF 50 is marginal.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com