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Sunscreen with UPF 30 provides protection against 97 of UVB rays, while UPF 50 offers protection against 98 of UVB rays. This means UPF 50 provides slightly better sun protection than UPF 30.

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4mo ago

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What is the difference between UPF and SPF sun protection and how do they compare in terms of effectiveness?

UPF (Ultraviolet Protection Factor) measures the protection level against both UVA and UVB rays in clothing, while SPF (Sun Protection Factor) measures protection against UVB rays in sunscreen. UPF is more consistent and reliable as it doesn't wear off or need to be reapplied like SPF. In terms of effectiveness, UPF clothing provides more reliable and consistent protection compared to SPF sunscreen, which needs to be reapplied regularly for continued protection.


What is the difference between UPF 50 and SPF 50 in terms of sun protection?

UPF 50 measures the protection against ultraviolet (UV) rays for clothing, while SPF 50 measures the protection against UV rays for sunscreen. UPF indicates the fabric's ability to block UV rays, while SPF indicates the sunscreen's ability to protect the skin.


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