Most of my camo is "pre-China" manufacture and doesn't need it, but I've blacklight tested it on newer items and it works as adverised. One of the items was a snow camo suit, and even though white will always reflect some UV the glow was noticeably reduced. On blaze orange the glow disappeared completely, and when I turned the light on the hat I was testing was still as bright orange to my eye as it had been befoe being sprayed. Good product.