A couple of times a year I use Meguiar's Trim Shine or, your fave...
very lightly. Wipe it and let it dry. Then a tiny spritz of Zaino #6,
which has an anti-stat agent in it, and wipe that product
dry.
It gets dusty, but it stays looking decent longer, imo.
I don't do an A-O, spit & polish under the hood; just a gentle wipe after
each wash, on the surfaces I can/feel like reaching, and a slight clean
job a couple times per year.
Any prod. with some anti-stat/trim black stuff should help, but as Gresch
said, it's under the hood.
GL,mD