Now you are going to repeat the following steps on small sections of the rim until you are complete
1.) Rinse 2.) Dip the brush in the works and scrub a small area (DO NOT CLEAN FOR MORE THAN 15 SECONDS AT A TIME!) 3.) Spray the Neutralizing mix all over the rim (the acid has probably dripped down so areas you didn't clean yet might have acid on them) 4.) Rinse Again and restart
Once you are satisfied with the shine, rinse thoroughly and then neutralize until the spray no longer foams when it hits the rim, and yep rinse again.
If the acid is allowed to sit on the rim for more than 15 seconds while you are cleaning it has a greater chance to eat away at the aluminum, it can cause pitting (little divits) or make the rim brittle overtime
(Truckers use acid on their rims all the time to clean them, The solution they use is MUCH more concentrated and it usually is just left on the rim (causes for most rim failures on semi's)