Some folks call this area the "hat shelf" area (across the pond).
I first clean the area with moist microfiber cloth, I use black one as a light-colored one will show the dirt and grime.
Dry with another clean microfiber cloth. I treat this area with Aerospace 303 solution (spray into clean microfiber cloth and wipe). If you want some luster, use several light coats of Aerospace 303, allow time for solution to dry in-between coats.
I also treat the roll-over protective loops, the draught shield and areas around the rear speakers and upper cockpit rear bulkhead, vertical storage.
It's that time of year to pay special attention to your weather seals. I've not found anything that even comes close to Gummi Pflege for protecting them Buy here: https://1z-usa.com/gummi-pflege-rubber-care-stick/ or Amazon...