I need some information on lip piercings?

Its not that painful if I were you Id go with the 16 guage with is the smallest. In most cases it will leave a scar and the longer you keep it in. Always once a week take it out and put it in alcohol to reduce infection, by getting the right labre stud it wont do damage to your gums or teeth, but be careful if you kiss someone, as if you do it hard it will hurt your gums, it generally takes about a week to heal, go to your local alternative shop to find different studs.