I'm going for a new experiment myself on the stinger, it's going to get CQuartz UK 3.0. Fusso went on the M135xi, where it works neat

The importance to me is longevity. Putting on some sort of shine is doable by whatever product on the market, they all produce something you can do a show off foto with after being applied, especially since fotos rarely show the difference between the products. The thing for me is it has to last. So longevity tests are the only real stuff I prefer to read/watch, but they're hard to come by, as people rarely do followups with proper mentioning of kilometers drive, weatherr conditions etc to get a somehwat pseudoscientific outcome and repeatability.
There's a HUGE difference between the warm climate slike California or say Canada/Switzerland etc. Some
Chemical Guys stuff has show to work quite okay in the warm, but over here, it's being avoided by many .. some of their hyped stuff (like Jetseal) just doesn't compete in harsher weather (which can be seen on a youtube channel called Xaron FR, but which is german) or have generally way better competitors.
Won't work. Ear "wax" is a water soluble substance

The oily stuff is skin grease.