Here's one of my retro Concords I picked up last week that are hardly worn but have the usual dirty/yellowed Cordura nylon uppers in need of a good cleaning & whitening. Thanks to the help from other sneakerheads on KZread, I tried this on my Air Max Bursts & had great results. My method is slightly different (tweaked for the slightly lazier individual like myself) which I find to be more efficient by leaving the product on the shoe longer for better results. Watch & see (also give a quick limelight to my OG "HGG"/Black Toe XIIIs at the end)