Great cinnamon but the 10ml bottles will go a long way as you only need a dash to give it a very good taste and vape
I have been using Cinnamon Red Hot for a few years now. It is perfect for me. Burns like hell if you mix it above 10%.
Important: This aroma needs time to bond with the base (or whatever it does). If you try it right after mixing, you won't taste much.
10 days is the minimum amount of time, three weeks is perfect.