I have good luck with the "crystal" deodorants. There are a few tricks to using these. One: you just want a solid one, smooth is nice, but it'll round over time. Two: you want to apply this immediately after you shower. If you shower at night, apply it then! Three: you want to spread that rock around like a ferret on crystal meth. Don't just get only the middle of the pit, the sweat glands go our farther than you might think. This will not stop sweat, it just knocks back the BO and doesn't stain shirts. Otherwise I got nothing and avoid wearing either pure white or pure black in my daily farm life xD