What happens to the effectiveness of UPF-rated clothing when the fabric becomes wet?
Answer
The protection rating drops significantly
While UPF clothing is designed to be an effective physical barrier against UV radiation, its performance is dependent on the integrity of the fabric weave. When the garment becomes saturated with moisture, such as from rain or heavy perspiration, the fabric's ability to block UV rays is compromised. This reduction in protective capability means that relying on wet UPF clothing is insufficient, and one must reapply sunscreen to exposed skin to maintain safety.
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