A few comments (serious and (hopefully) not so):
Some of us aren't used to tattoos. And I wouldn't think tattoos would impact whether or not characters' faces look young (unless you're specifically talking about cosmetic facial tattoos, which may be much more common than I think - but (if I understand them correctly) wouldn't really look much different than actual make-up).
And don't tell the pedos, or they'll be dragging their victims to tattoo parlors so they pass for late teens/early twenties. (Ha-ha (?))