Definitely get one.
Like the above posters said, you'll probably get a little red, and might see some small scabs from extraction, but those go away by practically the next day, and it just makes your skin look and feel so much better.
It'll also help in the long-term even if you're too lazy to go back for another, LOL. Since they remove as many impurities as possible during a facial, that makes it easier for you to maintain a better complexion thereafter.
So yes, do go at least once, it'll be worth it. I should know - my godmother is a beautician, so I get plenty of free facials!