If you're allergic to gluten or are following a gluten-free diet, it is vital to know that lip balms do contain gluten. While you don’t eat your lip balm as such, it does come in contact with your mouth so naturally you ingest it indirectly. So, be sure to check whether the lip balm your using is gluten-free or not. Lip balms from brands Aquaphor, Beauty by Earth, BeeNakedBalm, Blistex, Dr. Bronner's, Burt's Bees, Earth's Daughter, Eco Lips, eos, Hurraw, Kiss My Face, La Lune Naturals, Pangea Organics, Sky Organics and Sun Bum are gluten-free.