I'm 30M and working in a customer-facing position. I just got a full set of metal braces which I have to wear for 4 years (jaw problems, not something invisalign can fix). Admittedly it's an unconventional look for my age, but my boss didn't hesitate to tell me to get invisalign. He didn't threaten my job or anything but it pissed me off, he cited that I make enough money so I should be able to afford something less obvious.
For reference: https://i.redd.it/cu56ed7nrcj91.jpg