right before toms of maine had to pull their antiperspirant, i bought $50 worth from vitaglo. its been over a yr and we still have 3 we havent touched. my adolescent son uses that. when we run out, i dont know what i'll do.
plain old deodorant has no aluminum, but it also does NADA for his and my pits.
so, if you decide to go with a natural deo, you'll have to deal with a few re-applications throughout the day.
that prolly wasnt too helpful, just my btdt.