"..Urea has also been proven to be an extraordinarily effective antibacterial and antiviral agent, one of the best natural diuretics and one of the most effective skin moisturizers ever discovered. Urea actually increases the water-binding capacity of the skin by opening skin layers for hydrogen bonding and thus attracting moisture to dry skin cells.

As a natural diuretic, it is unparalleled and is also widely prescribed in cases of oedema or swelling, glaucoma, epilepsy and meningitis and to reduce excess cerebral and spinal pressure.."

https://www.bibliotecapleyades.net/salud/esp_salud06b.htm