Difference Between SPF and UPF Rating System

Summary of all major differences between SPF and UPF rating systems. What you need to know about SPF and UPF.
Sun Protection Factor (SPF) VS. Ultraviolet Protection Factor (UPF) - What is the difference?

What's the Difference Between UPF & SPF?

Difference Between SPF and UPF Rating System

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There is a difference between SPF and UPF

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Difference Between SPF And UPF Rating System, 56% OFF

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There is a difference between SPF and UPF

UPF vs. SPF: what's the difference?