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. PG and VG are two common base ingredients in e liquids for electronic cigarettes, playing crucial roles in various vaping products. Let's explain their meanings using simple and understandable Ge Gou Vape Fluid Warps The Skulls of Fetal Mice, Study Shows : ScienceAlert Vaping Liquids Containing Propylene Glycol and Glycerin May Cause Lung Inflammation: Study AboutLawsuits.com Vaping FAQs and Buying Guide Propylene Glycol Vape Juice Amazon.com: Vegetable Glycerine & Propylene Glycol Base VGPG 70 30