The problem is not so much the composition as it is the volume. I think it's probably the same for most of us who have posed to this thread. Sure, sometimes the sweat stings my eyes, but much, much more often the problem is that there's just too much sweat. It's in my eyes, and, yes, dripping down my face. It's everywhere. I don't find it invigorating.
The reason I started this thread is that with all that sweat, it gets into my eyes, and onto the inside of my glasses. That's where it can cause real problems vis a vis vision. It can be like looking through a swimming pool. The solutions presented here have helped.