Re: Clear Bra Protection
You can use an automotive wax on it. I'd suggest the same product you wax the paint with for simplicity.
We have clear bras on most every vehicle at our office and they get waxed regularly.
You'll want to remove the wax at the edge of the material so it doesn't leave a white film behind, which makes the edge noticeable.
Just remember the film is soft, so use light pressure during product application and removal. Thin coats are better. And watch the edge - don't run the wax applicator up against it, as you might lift the edge.