Why is sunblock important in extremely hot weather?

Jenice Forde-Baker, MD
Emergency Medicine
Sunblock is important in extremely hot weather because the first layer of protection on the body is the skin, and a person can easily get first-degree sunburns, but then second- and third-degree burns out in the heat.

So, something people have to remember if they're going to be active and outside in the sun in extreme weather is to make sure that they're using sunblock to protect their skin. A red burn on the skin is a first-degree burn. Once the skin starts to blister, that's already a second-degree burn and that is going to decrease the skin's ability to protect the body and fight infection.

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