my bet is on such looks being banned.

What do you have to hide? /s

or before burqas become illegal like in some Europeans countries where men were wearing burqas to slither into woman only areas.

I haven't tested it myself but according to CVdazzle it works. So the next question is how long before facial recognition technology overcomes efforts to confound it. Or how long until legislators get involved.

Yes the looks are ridiculous, but most fashion starts out that way. People often look for ways to stand out and being "retro" could enhance the cool factor.

What does someone care if a mugger's facial recognition software "flags" them? And who exactly is being flagged? And if a security surveillance system flags you what is the consequence? Who does that consequence apply to?

"Flag you" as what? It doesn't need to completely "fool" the system & make it believe there is no face. It simply has to get the system to believe that "makeup style A" and "makeup style B" applied to the same face are, in fact, two different faces. This is a pretty low bar, and one which I suspect will be achievable for quite some time.

Note this is designed to fool facial detection, not recognition. Detection generally uses much simpler algorithms because in most cases it needs to be orders of magnitude faster.

I was working on a project with OpenCV a few years ago. After a few embarrassing incidents I had to add a kludge whereby if it detected a small face directly above a big face, it was to discard the big one.

It turns out that the torsos of portly women with large breasts make ideal face candidates.