kaya nag-skip wiper blades baka madumi windshield when you applied rainx. try to clean muna with rubbing compound ang glass before applying rainx.

safe sya sa auto paint, otherwise e dami na sana law suits nyan sa US pa lang at for sure hindi naman maiwasan na di matapon yan sa paint.

di rin affected ang wax. i just applied it over the wax, parang glaze.