If you're curious if vaping nicotine-free shortfill E-Liquid after its expiry date is safe, the answer is typically yes, so long as it isn't expired by many years and there's nothing noticeable wrong with it, such as a difference in texture. This is because VG (Vegetable Glycerin) and PG (Propylene Glycol), plus a small percentage of flavorings, serve as preservatives with a long shelf life - VG alone lasts from 4 to 6 years in the right conditions. The main worry with past-date E-Liquids is whether or not they contain nicotine - though these are usually safe to use past the best-by mark. Remember that nicotine degrades over time, so this is something to think about when you're out of juice and all you have is a bottle that expired a few months ago. Read on to find out more on how nicotine affects vape juice expiration.