Is This Wheel Cleaner Hurting My Brakes?

[colonel]

Just purchased 2006 base Boxster. I have the standard 17" allow wheels. For my first washing last week, I used Professional's Favorite "No More Dust" (black bottle) wheel cleaner on the wheels. Seemed to work fine. Just spray it on and hose off the dirt. When I looked at the car later in the day, I noticed that the brakes further inside the wheel had a bright orange (rust?) stain on them, which was not there before. I am assuming that this orange buildup came from my use of the wheel cleaner. Orange coating went away after I drove the car a little bit and everything looks fine now.

My question is whether or not this wheel cleaner (and orange residue it leaves) is hurting my brakes in any way.

Any comments and help is greatly appreciated. Thank you.