There's a company in Ontario, Canada that specializes in all natural products and they carry more than their website shows. Their line is called VERDURA NaturAlternatives and they are at
www.verdurastore.com
They actually have unscented chapstick but they don't have it in the catalog yet. email them or call them because it is truly unscented and all natural.
BEWARE THE VASELINE! Vaseline is petroleum based and not designed to be ingested. If you say you are addicted that also says you will ingest of it on a daily basis which can cause serious problems to your health, the Vaseline company might actually specify on their containers that it should not be swallowed.
Good luck!