It’s hard to tell. I just did it in the family room over a 007 movie. Haha. I don’t have much to compare to because I don’t do any controlled tests. I used it on my OEM 19” wheels and they didn’t get much or any discoloration from brake dust. I am quite active in cleaning that and never let it build up which may be a bigger help than what any wheel wax can do.
It’ll be different now as these wheels are more or less brand new with a bright finish. I don’t religiously coat wheels though, I just clean them when I notice they’re dirty. LOL