It's made out of fish guts...that's why it makes your lips look all plump if you have a seafood allergy.
just regular chapstick though? oh well. I've been lately using The Merry Hempster's Hip Trip for Lips in lemon/lime.
I use Burts bees...I doubt ingesting anything in Chapstick brand chapstick is good for you...it all just falls under the "acceptable amount of toxicity levels" as determined by the FDA....which means you're still ingesting crap, just not enough of it to kill you all at once.