The Ammonia-Oxidizing Bacteria (AOB) that we use is a bacteria isolated from soil and grown in large bioreactors. The specific type of AOB used in our AO+ Restorative Mist is Nitrosomonas eutropha D23. It used to live on human skin, picked up from the soil when people were much closer to nature. Sometime around 100 years ago we began killing it off our skin through the "advances" in modern hygiene.
The ingredients in the AO+ Restorative Mist are water, live-cultured AOB, disodium phosphate (a buffer to suspend the bacteria in liquid), and magnesium chloride (salt).
Here is some more information that you might find interesting. And please let us know if there are any other questions we can answer.