In simplest language, it’s a way to get the salt content high enough to prevent scent-causing bacteria to thrive. I have used it on my feet to great effect, but I haven’t yet while here. I think they just get too hot to stink, lol.
You will sweat, but at the end of the day it has little to now scent, and I’ve noticed the under arms of my shirts fair far better than with off the shelf bar deodorant.
This thread leaves me feeling a wistful nostalgia for right guard gel sticks.