Particles: Size, Shape Matter.

Here's a very interesting study performed in 2016 that demonstrated that all Nano-Ag's are not the same. In this study, formula S4 proved most effective against pathogens, showing that 20ppm & 40ppm concentrations of ø10 - 50nm particles get the job done better than all the others !

All OPTI•MIST formulations contain approximately ø14nm nano-spheres, the most effective shape and size demonstrated to prevent the overgrowth of pathogens anywhere on the body.

https://www.mdpi.com/2079-4991/6/4/74/htm