LOL Scott EE, I asked about propylene glycol and they tried to sell me a powdered laxative! Said that when mixed with water it becomes propylene glycol. I believe it is PEG or something, not PG...let's just say I wasn't about to vape a laxative! NO WAY! I also use the Humco glycerine (hubby and I have gone through 3 bottles in the last year already, yes, I know, we vape a lot, but it has never had any ill effects for us). I know some people argue that you can buy purer, but I can buy this locally and it works!

As other posters mentioned, you can usually find it near the icy hot, benadryl creams, mosquito bite creams, and calamine lotion in your pharmacy section of your local super centers!

Also agreed that kosher is only saying it adheres to certain religious specifications...nothing to do with purity...just means that it was derived in humane and ethical ways (LOL, they slaughtered the glycerine quickly and painlessly! j/k j/k).