Wouldn't it be nice if ReNUyu from Batman TAS existed?

[Hordakfan]

Wouldn't that be helpful to people who can smooth away/reshape their wrinkles and reshape imperfections including literally remaking their faces however they choose? i would think that's a great idea which is better than paying for plastic surgery and solve problems.

 

[The Joker]

But it wears off after 24 hours, and has horrible addictive side effects.

 

[Hordakfan]

But it wears off after 24 hours, and has horrible addictive side effects.

What about one that lasts 75 hours instead of 24?

 

[Jochimus]

I wouldn't say it'd be a good thing, no.

In addition to the aforementioned effective timespan and addictive side effects, if you can literally reshape your face with the stuff, that alone would be a criminal's wet dream. You could rob or rape or kill someone and as fast as the police could respond you'd already have a vastly different face than the one they might be looking for.