Clay bar, I use the dodo juice clay bar and clay bar lube. Works a treat on white cars
Or just as effective - WD40.
Autoglym Intensive waste of time IMO
When I say brush I don't mean a garden brush, a soft bristled brush on heavily contaminated areas, just like the white car above.
Ill try a MF applicator next time but it seems counter productive to me
i did buy 5l of the stuff ages ago due to the rave reports it was having