I used to go to a barber who recommended urine for getting rid of blackheads. Never tried it though and I found another barber soon after he told me that.
But as far as Ghandi, "...Gandhi most likely didn't drink urine. There's scant evidence to suggest that the Indian leader actually took part in the urophagia practice, despite the urban legend that persists...."
https://www.newsweek.com/explain-your-letter-time-we-falsely-accused-gandhi-drinking-his-own-pee-375339