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FAQ - Questions About Propylene Glycol

Frequently Asked Questions about Propylene Glycol used in E-Liquid for Electronic-Cigarettes.

What are other terms used for Vegetable Glycerine?

Other terms used for Vegetable Glycerine
• VG: A simple abbreviation of vegetable glycerine.
• Glycerin or Glycerine: Small bottles of glycerine can be found in the home baking section of most UK supermarkets, next to the food coloring and flavourings.
• Glycerol: Important Note: Be very careful not to confuse glycerol with glycol...similar names, different things!
*Only USP (United States Pharmacopeia) and BP (British Pharmacopeia) approved propylene glycol and vegetable glycerine should be considered food safe.

What is Vegetable Glycerine?

Vegetable glycerine, usually referred to simply as glycerine (and often abbreviated to VG by folks on the ECF), is a clear, virtually odorless viscous fluid which is slightly thicker and sweeter than propylene glycol. USP or BP approved glycerine is used in more than 1500 applications, many of them as additives to food and drink.

What to Do if You Are Allergic to Propylene Glycol?

If you are allergic to Propylene Glycol it does not mean that you have to give up on electronic cigarettes. Many e-cig manufacturers produce products that either use VG or have it available as an alternative to Propylene Glycol. VG also produces an odor-less vapor though it is considered to be a bit thicker and sweeter than PG. Vegetable glycerin is also known as Glycerin, Glycerin, VG, or Glycerol. United States Pharmacopeia and British Pharmacopoeia produce “food safe” versions of propylene glycol and vegetable glycerin.

What are the Known Side Effects of Propylene Glycol?

Some of the side effects experienced by people that use Propylene Glycol are muscle pain, sore throat, and stronger smelling urine. These symptoms can all result from using e-cigs that have Propylene Glycol-based e liquid in their cartridge. Since PG is considered a humectants (it collects moisture), your throat can become dry after use and potentially sore. It can also result in an increase of lactic acid production by your body causing muscle aches that occur more often than normal. In order to counter-act these symptoms, it is recommended that you increase your fluid intake in order to flush the lactic acid from your body more quickly. This will also help with alleviating your sore throat more quickly which normally disappears after a few days. If you find yourself beginning to suffer from bowel movements, a rash, or having night sweats you may be allergic to propylene glycol. If this occurs, you will need to seek out an electronic cigarette solution that is vegetable glycerin (VG) based instead.

Other Products that Use Propylene Glycol

Other products that make use of Propylene Glycol include cosmetic products, food coloring, cake mixes, sodas, salad dressings, and toiletries. PG is also used as an active ingredient in fog machines used in industry, nightclubs, and theaters

Why is Propylene Glycol used in e – liquid?

One of the main reasons that propylene glycol is added to e liquid is that liquid nicotine and flavorings alone produce no visible vapor. The production of vapor is important for two reasons. Firstly, it acts as a vehicle for delivering nicotine into the lungs and secondly, because vapors enjoy the feeling of inhaling and exhaling something that visually resembles cigarette smoke. So, to ensure a satisfying cloud of vapor, propylene glycol (PG) or vegetable glycerine (VG), both virtually odorless and colorless syrupy liquids, are added to the mix. Do note that despite scaremongering by individuals that don't know the facts, PG is not the same formulation as a similar-sounding product used to make radiator fluid or car anti-freeze - in fact it's widely used all over the world, everyday.

Why is Propylene Glycol Used in Electronic Cigarettes?

One of the aspects of electronic cigarettes that make them attractive for prior users of traditional tobacco is the similar look and feel that e-cigs have to regular smokes. A problem arises, however, when just vaporizing nicotine, water, and the flavoring ingredients– there is no smoke produced. As a result, propylene glycol (or PG for short) is added to the e liquid mixture in order to produce an colorless vapor when smoking an e-cig. This helps better mimic the action of smoking without producing the dangerous second hand smoke produced by regular tobacco cigarettes.

What Is Propylene Glycol?

propylene glycol works as a humescent, which causes retention of moisture content of skin or cosmetic products by preventing the escape of moisture or water. Propylene Glycol is a chemical found in personal care products that acts as a penetration enhancer that keeps products from melting in heat and/or freezing when it is cold. It is found in items such as shampoo, conditioner, soap, acne treatment, moisturizer, toothpaste, deodorant, nail polish, mascara, etc.. So basically anything you could possibly use on your body, propylene glycol can be found in.