It may make a difference in the rain, as the droplets will roll off instead of creating a film that ripples etc.
Waxed my father-in-laws pink Suzuki Ignis the other day. Well pink except for the newish bumper, front quarter panels and driver door which are red, its original color.
The hood took 3 times as much as the remaining 3 doors, roof, rear quarter panels and hatch combined! But at long last all is red and shiny.
People came walking by and told me they had a car as well that I could wax if I liked.
I told them the owner of the car I was working on gave me the hand of his daughter, were they able and willing to better that?
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gmeter or 0.13 Mmile.
For confirmation go to people just like you.
For education go to people unlike yourself.