Fortunately, the other clothing was wearing was only a hat the same color as his surroundings, so it did not block the potion, and he was able to slip past anyway with no problems whatsoever.
Unfortunately, he left his goggles home that day and chose to bring his seeing eye dog instead, the one Jack is allergic to
Fortunately, in the 365 days that the world was 'inactive', Jack had special treatment to remove his allergy to dogs.
Unfortunately, the dogs were kind of irked that they couldn't make the funny man named Jack get puffy red eyes anymore, so they, being intelligent as they were, went and somehow got Jack's name legally changed to Nigel, and then made it so that Nigel's name could NEVER be changed back to Jack by any means, no matter how fortunate; one by one, his friends and family began to refer to him as Nigel, his new name, until eventually the whole world new him as such, forever and always, and he was never again called Jack.
Unfortunately, radicals only make up a sliver of the population, and the rest of the sane world was against said idea.
Unfortunately Donald Trump built his wall and the United States was starved out, with 90% of its civilization population dying.
Unfortunately, Nigel was left completely out of the loop on world affairs due to taking an early retirement on a tropical island
Fortunately, Nigel's island was a tropical paradise full of wonderful fruit and shimmering, clean water. He even made friends with a monkey!