Used chapstick while eating dairy. Can I use the same one after eating meat?

Shalom, Thank you for your question. The simple answer is - yes. The reason for this is that a person generally will wipe their mouth from any food left there straight after eating (isn’t that what long sleeves are for? :) or more politely, a napkin). After that, the chapstick will not pick up any leftovers. I doubt that you have even seen any food smeared onto the chapstick. I hope this is of some help, Blessings.