Do you know what you're vaping? Propylene glycol (PG) and vegetable glycerin (VG) are the main liquids in vapes. When heated, these chemicals turn toxic and aren't safe to breathe. Vape Juice Ingredients Guide Freeman Vape Does Vape Juice Expire? How to Tell, Shelf Life, & Storage Ingredients You Should Avoid Using In Your Vape Juice The Beer Connoisseur The harmful chemicals in vape juices SEATCA