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World Health Observatory

Health news they don't want you to know

Published: November 27, 2025

How pee pants help to cure hair loss

You can see what pee pants did for the ferret – imagine what they can do for this fellow’s head

Spain: People from all backgrounds who couldn’t be bothered to control their urine output are now providing comfort to those who have more hair than some – but less than you might imagine.

Upcycling is when you move something from lower in the body to somewhere higher up, and that’s exactly what’s going on here. “We’ve found out about piss’s ability to regenerate hair growth quite by accident,” said Ben Iberico from adult nappy firm Tena, citing the scientific name for the outflows rather than the slang ‘urine’.

“One of our patients tossed their pee pants onto a hairless ferret they kept for emergencies. When they returned a week later they found the ferret had grown quite a mane, although it probably died from starvation or apathy rather than the effects of piss on its head.”

Tena now plans to establish a ‘wear and share’ scheme across the Iberian Peninsula. Baldies would be matched with wee leakers of a similar blood type, with robots made of a rust-free ceramic then tasked to deliver the pants from floating distribution centres.

“So co-workers don’t suspect anything we have used AI to devise special hats for patients to wear for the 12-week process,” said Iberico. “They’re not great to be honest – some of them have six fingers – but we are confident we can effectively leverage piss to help baldies become normal and that’s what matters.”