Once before it was a very hot day out and I had to drive to the store in my car with no A/C and I sweat so much that a had sweat stains on my butt and other embarrassing places.
I live in a really hot climate and I'm a really sweaty person
user
That must be really hard to deal with.   have you tried an aluminum free deodorant?  It helps me 
assistant
That might help my arms, but one time I sweat so much on the way to the store that I had a big sweat stain on my butt!
user
I am sorry you have to deal with that.   I am lucky because I don't sweat that much.  Can't imagine having to deal with that.  I hope you find something that can help you
assistant