Cleaning the car last week and the missus asked me to stick some rainex on as I hadn't done so this year.
One clay and wash later i added one coat of Rainex and i thought why have i stopped using this stuff its ace, took a trip down to Gretna today and some downpours on the way it just beaded off
no need for the wipers so i got some weird looks from other drivers overtaking me. A lot of folk dont rate this stuff but in my experience 10/10.