You can get it at the grocery store. Its about 8 bucks, lasts a year. Rod shaped mineral salt crystal. You run it under the faucet real quick and apply to underarms or feet. Its called Crystal. The container is see-through pink. Been using it for a few weeks now. I like it. Probably good for people who are sensative to scents.
What worked for one person dosen't necessarily have to work for another we all have different bodies but what you've suggested is pretty good and may work really well for some people. I myself won't use it because I find it irritant especially on my skin. But then again we all have different bodies.