smokindiva I was wondering the same thing... I teach jazzercise 4-5x a week and i get nasty-sweaty
I just started wearing a bun this week, so I'll have to wait and see how long I can go without rinsing my hair. I taught yesterday, and when I took my shower afterwards, I just took my hair out of the bun. I didn't rinse it, but it did get a little wet.
I guess I'll just have to listen to my scalp
If I end up co-washing every day like I have been that'll probably defeat the purpose of wearing a bun.