All the test animals died.
In Africa cow piss is how the tribal blacks lighten their hair….
FASCINATING photographs show an African tribe where members use URINE to wash their faces and bleach their hair. Compelling images reveal the daily rituals of the cattle-worshipping Mundari tribe, …
https://www.thesun.co.uk/news/11632885/inside-african-tribe-cow-urine-wash-faces-bleach-hair/