Musicians/Athletes using hair fibers?

Hey guys. The time has come for me to start using hair fibers. I ordered Toppik and should be here in a few days.

I make my living as a musician and was wondering if any musicians out there use fibers and could share their experience. My concern is with sweating on stage and having it become noticeable. Or being under bright lights and the fibers to become detectable. Anybody who has some knowledge on this, please fill me in! Thank you!