How do these companies come to that conclusion? I think most people start to smell after only 24 or 48 hours max so how do these companies get 72 hours out of their testing?
Im assuming they’re fudging their numbers but at what point does it become false advertisement?
I periodically used mouthwash, on my arm pits, as a teenager. It cleared the funky smell quite impressively. I would definitely suspect head and shoulders anti fungal properties as the useful bit.