Made a batch of lip balm today with peppermint eo and lip balm sweetener from WSP. It is stevia in coconut oil. Not sure I like it, the initial flavor is fine, it’s nicely sweet. The downside is that it has an aftertaste, like most things sweetened with stevia. Gave a tube to a tester to see what she thinks. Hubby thinks it’s fine. I don’t trust my impression as I’m super sensitive to many things - freakishly so. 
