Okay, real simple.
Treat the clear bra "film' just as you would the paint. Keep it clean, maintain the finish with regular cleaning & waxing. There's no need to use anything other than what you would use when cleaning the paint.
Never "scrub" on the "film" as it WILL scratch and keep a good, even coat of wax applied. The wax will prevent the film from EVER yellowing however, the warranty included with the clear bra most likely includes a clause against yellowing anyway.
Same scenario goes for the winter months.
