Now, researchers have discovered the bears have another unexpected Arctic adaptation: greasy fur. It’s a trait that, surprisingly, might help us find alternatives to “forever chemicals,” a class of widely used compounds that are linked to a range of health problems in people.

Unique lipids in polar bear sebum prevent ice accumulation, paving the way for eco-friendly anti-icing materials.

University of Toronto Scarborough researchers have directly linked population decline in polar bears living in Western Hudson Bay to shrinking sea ice caused by climate change.

“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.”

Polar bear fur resists ice because of a natural greasy coating called sebum. This helps them move quietly while hunting.

An international team of scientists has discovered the anti-icing secret of polar bear fur—something that allows one of the planet's most iconic animals to survive and thrive in one of its most punishing climates.

Indigenous peoples of the Arctic traditionally use polar bear fur for its ice-resistant properties, but the science behind the bears’ natural antifreeze hasn't been studied until now

A new study, published in the journal Science Advances on Wednesday, reveals that the fur of polar bears contain a chemical that makes them resistant to ice.