If you’re shopping for E-liquid, you’ve probably read about the different liquids being used by each company. E-liquids are generally made up of four ingredients: water, nicotine, flavoring, and VG (vegetable glycerin) or PG (propylene glycol). Some use VG or PG, while others use a combination.
Vegetable glycerin (VG) is a thick liquid derived from vegetable / plant oils and is considered completely natural and safe. It gives your e-juice a slightly sweet flavor and creates extremely large amounts of vapor. It also produces a softer, smoother throat hit that many users prefer.
Propylene glycol (PG), by comparison, is very thin and chemically created in a lab. It’s used in thousands of consumer products and is generally considered safe, but there have been random reports of negative reactions, often allergic in nature. Known to produce a great throat hit, PG is preferred by some users because of it’s richer feeling and stronger flavor.
Because each base has slightly different qualities, the right one for you will depend on your personal preference. Some people prefer VG-based E-liquids, while others prefer PG. Many companies use a combination of both to appear to the broadest range of customers.