Florida Laboratories 60 40 PG VG Propylene Glycol & Vegetable Glycerin 4oz (2 Pack) Kosher 99.9% Pure Food Grade Manufactured in The USA: Amazon.com: Industrial & Scientific DIY PGVG base Propylene glycol, a component of electronic cigarette liquid, damages epithelial cells in human small airways Respiratory Research Springer Nature Link A Guide to PG VG Ratios in Vaping Juicemate PG vs. VG: What's the Difference? 1 in 3 teens who vape say they get e cigarettes online, including through social media apps. (PMC study) Parents: Monitor online activity, start the conversation, and stay informed. Learn more at