No. A polar bears fur acts as a protective layer between the sun’s rays and the polar bear’s skin. A polar bear’s hair is actually transparent and hollow, which allows it to disperse incoming UV rays; it also contains a substance called keratin, which may absorb the radiation. One study showed that a 1/5-inch strand of polar bear hair conducted less than .001% of the UV light applied to it. So only a very tiny amount of radiation ever makes it to the skin.
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