Well, you can get the ingredients list for one. Like a lot of things, there are some less reputable companies making it and a lot of reputable ones. If anythi

Well, you can get the ingredients list for one. Like a lot of things, there are some less reputable companies making it and a lot of reputable ones. If anything, I've been pleasantly surprised at how seriously a lot of the vaping "community" takes this, sometimes going as far as to have samples analyzed in a lab and sharing the results when there's a concern about one of the flavoring agents in a mix. Then there's people like me and the person who replied to your comment earlier who just make our own. It's surprisingly simple and pretty inexpensive. The other commenter eschews flavoring altogether whereas I only use a small amount of it and only buy stuff from companies that list the compounds included so I can make sure there are no particularly nasty components that would make them dangrous to inhale in typical concentrations. I agree that there are no long term studies on the effects of inhaling this stuff for years on end but a lot of the things that stick out as hazardous are easy to identify and even when they exist, it's typically at a level that's a small fraction of what you'd run into when talking about combustible tobacco. Basically it's harm reduction. Like how you read about the dangers of eating char-grilled meat because it has some of the same things as cig smoke. That may be the case but you're not getting nearly as much of it so you won't likely get cancer from eating a seared steak a few times a year like you would from smoking cigs daily.