Whats stopping more people from dying their hair crazy colors?

Saw a video of a woman wearing purple hair and it made me wonder why people don't seem to do it more, I assumed it must be the fear of being judged, do you think fashion will ever turn into unaturally colored hair, if you look at these fashion shows people already have lost their minds. šŸ˜‚
Whats stopping more people from dying their hair crazy colors?
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