Janiya. Age: 27.
Ammonia in water acts as a caustic but weak base.
Kimora. Age: 27.
From Gunpowder to Teeth Whitener: The Science Behind Historic Uses of Urine
Stem cells harvested from urine have been reprogrammed into neurons and even used to grow human teeth. Its high pH breaks down organic material, making urine the perfect substance for ancients to use in softening and tanning animal hides. You guessed it: ammonia, which lifted stains away. Egnatius, because he has snow-white teeth, smiles all the time.