Dave Witlock is a practical man. "I have not taken a shower in over 12 years," says the chemical engineer and Massachusetts Institute of Technology graduate. "No one did clinical trials on people taking showers every day. So what’s the basis for assuming that that is a healthy practice?"
Twice a day, Mr. Witlock applies a live bacteria solution of his own design to his skin. To spread the bacteria to everyone else, he has founded a company called AOBiome and is selling a spray that contains live ammonia oxidizing bacteria (AOB), called Mother Dirt.
From the Mother Dirt website:
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Modernization of the Skin Microbiome
The main premise of AOBiome is that human skin was historically colonized with Nitrosomonas, a form of Ammonia-Oxidizing-Bacteria (AOB). AOB have evolved a specialized purpose: they derive their energy solely from consuming (oxidizing) ammonia and urea.
Why do we believe this? AOB are extremely ubiquitous in nature. This is because they play a crucial role in the nitrogen cycle everywhere on the planet. As a result, anywhere that we find ammonia (even if it is thousands of feet below sea level & has never seen daylight), we will find a form of Ammonia-Oxidizing-Bacteria.
But there is one exception: The only place that ammonia exists without AOB is human skin. This seems like an incredible outlier. Knowing how sensitive Nitrosomonas and other AOB are to modern soaps and detergents, we hypothesize that it was modern hygiene and the obsession with “clean” that has stripped us of this crucial microorganism.