What are the 4 Main Ingredients in E-Liquids?

Although vaping is incredibly popular, even some experienced vapers aren’t totally aware of what it is that they’re inhaling into their lungs each day.  That's why we are going to thoroughly explain each ingredient that’s in your e-juice so that you can better understand what it is that you’re consuming while you vape away.

Propylene Glycol

Propylene glycol (PG) is a synthetic organic alcohol that’s mostly odorless and flavorless, although some say that it has a mildly sweet taste.  It’s classified as a solvent, meaning that it dissolves solutes in order to create solutions. 

Where Else You Can Find It?

  • Face Creams
  • Soft Drinks
  • Cake Mixes
  • Spices
  • Frozen Meals

How PG Affects Your Body

Propylene glycol is an ingredient that most of us have been consuming since we were kids because of how commonly used it is in everyday household products.  In rare cases, allergies to propylene glycol have been reported.  If you’re allergic to PG, you may develop throat irritation and itching of the skin when you vape an e-liquid that contains this ingredient.

Amazingly, it was discovered in 1942 that propylene glycol may be capable of fighting bacteria and viruses in the lungs and along the respiratory tract, helping a person avoid contracting dangerous illnesses like influenza and pneumonia.  Because of this, some believe that vaping can actually fight respiratory infections.

How PG Contributes to Your Vaping Experience

Propylene glycol is an ingredient that’s used to balance out vegetable glycerin (VG), the other ingredient that, when combined with propylene glycol, creates the base of any e-liquid.  PG is less viscous than VG, meaning that it thins out vape clouds and makes it easier for e-liquid to be vaporized.

How Much Is In Your E-Liquid?

Vapers can decide how much propylene glycol they want in their e-liquid compared to the level of vegetable glycerin.  Vape juices with higher levels of propylene glycol create thinner, smaller clouds, a fuller flavor and a stronger hit to the throat on the inhale.

Vegetable Glycerin

Vegetable glycerin (VG) is a viscous, sticky and fairly sweet-tasting substance that’s derived from vegetable oil.  It’s odorless and colorless, made by adding heat to vegetable-based fats so that the glycerin becomes isolated from the fatty acids.  Then, it’s combined with water to create a pourable substance. 

Where Else You Can Find PG?

  • Cosmetics
  • Skincare Products
  • Shampoo and Conditioner Products
  • Packaged Desserts
  • Toothpaste
  • Candles
  • Pharmaceutical Drugs

How it Affects Your Body

Like propylene glycol, vegetable glycerin is an ingredient that most of us have been consuming in various forms all our lives.  There are really no known health risks associated with vaping VG.

How VG Contributes to Your Vaping Experience

Vegetable glycerin is the ingredient that joins with propylene glycol to form the base of any e-liquid.  As we said, VG is more viscous than PG, promoting thicker, denser clouds and a smoother inhale.    

How Much Is In Your E-Liquid?

You can choose from different levels of vegetable glycerin in your e-juice.  Typically, this ingredient makes up at least half of your juice’s formula.  Those who prefer higher levels of VG do so because they want to be able to blow large, thick clouds.


Refers to a large category of food-grade flavoring additives that give each e-liquid its unique flavor profile.  Typically, flavoring ingredients are carefully sourced by vape brands for quality. 

Where Else You Can Find Flavoring?

Flavoring ingredients can be found in anything that has a flavor, including:

  • Food Products
  • Beverages
  • Gums
  • Toothpaste
  • Flavored Lip Balms

How Flavoring Affects Your Body

These days, flavoring agents must be of a food grade in order to be added to an e-liquid.  While there are flavoring ingredients out there that are not safe to inhale, respected juice companies avoid them.  Solace Vapor uses flavoring that is specifically made to be consumed through inhalation. 

How Flavoring Contributes to Your Vaping Experience

Obviously, the flavoring ingredients are what makes your e-liquid tick.  Because of the wide range of flavors that are available today, vapers enjoy browsing through literally thousands of e-juices before settling on the one that they wish to try.

How Much Flavoring Is In Your E-Liquid?

Short Answer: Typically, flavoring ingredients make up about ten percent of an e-liquid.


Nicotine is an oily liquid that’s extracted from the tobacco plant.  It can be either colorless or slightly yellow.  It’s a known stimulant that’s physically addictive.

Where Else You Can Find Nicotine?

  • Cigarettes
  • Nicotine Gum and Patches
  • Pharmaceutical Drugs
  • Chewing Tobacco

How Nicotine Affects Your Body

Many people mistakenly believe that nicotine is the substance in cigarettes that’s very harmful to one’s health.  However, this really isn’t the case.  There’s no evidence that nicotine itself is harmful to the body.  While high doses of nicotine can be toxic, it’s extremely difficult to consume enough nicotine to put your body at risk of toxicity.

Nicotine is a stimulant that activates the nervous system.  Many people like nicotine because it provides a gentle buzz that boosts energy and cognition.  The stimulating effects of nicotine generally last for under a half hour.

How Nicotine Contributes to Your Vaping Experience

Nicotine, as we know, is physically addictive.  Vaping is a sound alternative to smoking because it allows a person to get their nicotine fix without exposing their body to the many harmful substances found in tobacco cigarettes.

How Much Nicotine Is In Your E-Liquid?

The amount of nicotine in an e-liquid product is really up to the consumer.  Practically every e-liquid manufacturer offers their products in a wide range of nicotine concentrations, typically ranging from 0mg up to 50mg.

Salt Nic vs. Freebase Nic

Vapers can decide if they wish to vape e-liquids that are made with freebase nicotine or salt-based nicotine. 

  • Freebase nic is typically consumed in lower concentrations and is used with a box mod vaping system.
  • Salt nic allows the user to get a more potent dose of nicotine during a vaping session. This type of e-juice is vaped with a portable pod mod system.

These Ingredients Work Together to Make Vaping Satisfying!

The four main ingredients in e-liquid each play a unique part in providing you with a satisfying experience.  Thanks to the world of vaping, we can enjoy these ingredients during each vape session.