This all depends on your personal habits - not just the showering and the products you use, but also the amount you sweat. It’s different for everyone, and we’re still working on defining what a "healthy biome" is.
Don’t be concerned about the temperature upon arrival. Room temperature is not harmful to the AOBs in your bottle unless it is for extended periods of time (the AOB lose activity after about 4 - 5 weeks at room temp).
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.