I sweat like crazy during workouts! By the end my hair is soaked, my shirt and sportsbra are soaked, unless I'm running outside and it's 40 degrees or colder! (And even then, I still sweat just not as much).
To me, there seems to be no point in wearing a/p-deodorant during workout. I'm going to be sweaty and smelly no matter what...I usually peel off my clothes and throw them in the washer and shower immediately!
But I am also a big fan of the deodorant crystal! I was a doubter, but I have been fully converted. Before my deodorant crystal conversion, I liked "Certain Dri", which is available at CVS/Walgreens/Target and is industrial strength and is available unscented.
Dee