Do essential oils expire?

Question

I have some expired essential oils and i want to know if it is still safe to use them....like in a diffusor.....

Answer 1

I don't think so

Answer 2

They would still be safe.  While most essential oils have expiration dates stamped on the bottle, they do not become toxic when that date has passed.  They have an expiration date because the oils will become more concentrated with age, due to a certain amount of evaporation, and this changes their scents.