PG (Propylene Glycol) E Liquid Base Make My Vape Nicotine, propylene glycol, sweet flavorings, and various toxic chemicals like carcinogens and heavy metals are found in vape juice, posing health risks, especially to youth. 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. Vaping propylene glycol and vegetable glycerine may lead to lung inflammation Understanding Vape Juice: Ingredients, Varieties, and Safety General Vape VG vs PG Explained: E Liquid Ratios Guide Ecigone