arm & hammer makes a aluminum free deodorant, there's also one called GeoDeo that you can find at your drug store, there is an aluminum free anti-antiperspirant that I like called HyperDri its a serum. I stopped using aluminum deodorant/anti-antiperspirant for the past 6months or so, and no natural deodorant will last as long as an aluminum deodorant so you have to expect to apply at least 2x/day if you are a sweater.