Popular Science · 7d
How do polar bears keep ice off their fur? Grease.
“Unwashed, greasy hair made it much harder for ice to stick. In contrast, when the polar bear hair was washed and the grease largely removed it performed similarly to human hair, to which ice sticks easily whether it is washed or greasy.”
Billings Gazette · 15h
Oily polar bear hair won't ice up thanks to special sebum
You have something in common with polar bears. Polar bears and humans produce sebum. It's an oily substance that comes from our hair glands. In humans, sebum helps protect your skin from irritation, infections and even helps regulate your body temperature.
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