One ingredient
Potassium alum. That's the full ingredient list.
One ingredient. No fragrance. No marketing fog. A mineral-salt deodorant that stops odor without blocking sweat or competing with cologne.

Conventional men's deodorants are part antiperspirant, part cologne, part chemistry experiment. This isn't that. It's a single mineral salt that prevents odor-causing bacteria. You wet it, you swipe it, you leave the bathroom. One stone lasts over a year.
Potassium alum. That's the full ingredient list.
Not the same as the metal compound in antiperspirants.
$18.95 for what most men buy four times a year.

Use the stone or spray after showering, when odor-causing bacteria are easiest to stop.
It neutralizes odor at the source without blocking sweat or masking with heavy fragrance.
No white residue, no sticky layer, no overbuilt formula.

One ingredient. No fragrance. Built simple, built to last.
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Yes. If you wear cologne, this lets that come through cleanly.
Wet the stone, swipe each underarm for ~30 seconds. Let it dry. Done.
You're laying down a thin layer of mineral salt, not gobs of paste. It wears down slowly.