by Lauren
(Gainesville, Florida)
Well, from what I'm aware of the aluminum can be dangerous if large amounts are taken into the blood stream and normal anti-perspirants don't have too much but some with the higher amounts could be dangerous.
How it gets into your blood stream from your armpit I do not know.
Also, the crystals (I have the roll on kind) are not an anti-perspirant but are a deodarant so sometimes I try to put it on a let it dry and then put Mitchum on over it for the deodorizing and anti-perspirant effect.
I do notice that I smell less with it on, not gone completely but significantly less for sure.