You’re forgetting that the additives in particle balls are usually harder material than the actual coverstock. Therefore, the ball will seem “polished†long before you could possibly take a serious bite out of the particles. I remember the first time I resurfaced my Reaction Ricochet with the mica particles. You could actually feel each and every one in the cover afterward, because the resurface only took down the coverstock… couldn’t even make a dent in the mica.
As for Black Magic… I have no idea how they can claim there are no abrasives. Without them, it’d be impossible to “polish†the ball. The only other way to add “shine†would be to clog the ball’s pours, which would certainly be undesirable. That’s the reason you never want to use something like Turtle Wax, it fills the pours of any proactive ball, kills the reaction, and is almost impossible to get out.
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Shizzam!