Pros: no fragrance, works well
Cons: may need to reapply
Now that I understand what potassium alum is -- yes, it's an aluminum derivitive, but it's not absorbed into the skin -- I have no problem using this roll-on. As far as natural deodorants go, this is the one that's worked best for me, and I've tried a handful of stick deodorants that do nothing but make me itch. It goes on a little wet, but if you put it on before your shirt and let it dry a minute or so, it's fine. I haven't had to reapply it throughout the day, and my armpits stay pretty dry with no "sweat itch" (gross, I know). I could see that people who sweat more than I do might need a few applications. But if you want a natural deodorant with semi-antiperspirant qualities, this one does the trick.