And even though we grew up without it, we now wear sunscreen.

and sunscreen

edit: plus maybe clean air laws.

Alcohol, too. While I do believe many/most did the whole "social life is at the bar" out of high school, I think millennials were the generation that started breaking the cycle more and started doing more things while drunk (like board game bars, video game bars, escape rooms, etc), and then transitioned to not getting as drunk so they could do the things better and not be as much of a burden on those around them who weren't just trying to get wasted for the night.

Also more options that weren't as destructive as alcohol for those that still wanted to get fucked up. And less judgement about those options.

I suspect many of them overdo skincare, diet, etc.

Heavy makeup is a thing for the older generations and the younger generations.

I think I've only worn full face makeup 3x in my life. If/when I ever do put on makeup, it's typically mascara. Every now and then eyeliner and eyeshadow. That's literally it.