Instead of comparing UPF to SPF, think of them as two necessary defenses for your skin.
Your summer guide to sunscreen, from SPF to not-so-magic pillsBasically, UPF is a grade given to clothing and other textiles specially designed to block UV rays from reaching the skin. According to outdoor retailer REI, even a plain white t-shirt providesWhile SPF and UPF products will defend your body from the sun, their levels of protection are not determined in the same way, explains, the director of community health for the department of dermatology at Massachusetts General Hospital.
In comparison, UPF ratings are established by the percentage of UV rays that penetrate the material. If a shirt has a rating of UPF 50, it is thought to block 98 percent of ultraviolet A and ultraviolet B rays from reaching someone’s skin. Officially rated UPF products range fromI asked both Kourosh and Blalock about the benefits of UPF, how to tell if a product will offer good sun defense, and if SPF ratings serve as an effective guide for choosing the proper level of protection.
There are also people who work in environments with snow, open water, white sand, asphalt concrete, or polished metal. These are reflective surfaces that intensify a person’s exposure to UV rays. They should opt for maximum-protection clothing and sunscreen, and seek shade as often as possible.
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