At Virgin Vapor, we strive to use only the very best, purest ingredients. This even extends to the vegetable glycerin base we use. Not only is all of our vegetable glycerin USP (pharmaceutical grade), it is also certified organic. We had to go through a long process with our manufacturer to get our organic VG up to USP standards as organic AND pharmaceutical grade VG was not available anywhere when we started! As far as we know, we're the only e-liquid manufacturer with both of these certifications for our VG.
It is also tested and shown to be free of many common allergens, impurities and adulterants: