Whether your e liquid is commercially manufactured or made in-house DIY, they all share the same three basic ingredients. Nicotine is always an option. Additional additives or compounds are also included in many commercial e liquids.
Propylene Glycol and Vegetable Glycerin - 80 - 90 %
Concentrated Flavourings 8 - 10 %
Capella Flavor Drops
Nicotine 0% – 5%
What we knew regarding Nicotine is being re-written. The advent of vaping has paved the way for science to re-look at nicotine outside the context of tobacco. A number of interesting articles about nicotine here
A form of mineral oil- an alcohol produced by fermentation of yeast and carbohydrates. It functions as a preservative in flavourings. Flavours without PG would not have a long shelf life. e liquids with a higher PG content are preferred by many vapours as PG enhances flavour and acts as a carrier; whilst providing us throat hit too.
AKA glycerol, is a clear, odourless liquid produced from plant oils, typically palm oil, soy or coconut oil. It is considered by some to be a more natural, even healthier alternative to PG. It creates far more vapor than PG and adds some sweetness too. VG is extremely thick, which places an additional load on delivery systems.
This represents a small percentage of overall volume, but we understand its significance. The percentage of nicotine is generally displayed on the bottles and measured in ML or MG. For example - 16 mg is 1.6% nicotine per millilitre.
When it comes to e liquid flavouring, it’s important to think in terms of flavour concentrates as opposed to flavour extracts or oils. BTW, the majority of flavourings are FDA approved. Never use food flavourings from supermarkets as they contain unwanted oils.
Additives & Compounds 0 - 2 %
Examples could be Sweeteners, Stabilisers and Alcohols (All FDA and GRAS - Generally Regarded as Safe). Many e liquids contain some form of additional ingredients. This is not to say that they represent a concern for the purists at heart, nor are they anything other than what is found in many of our consumables. Yes, some are common in tobacco cigarettes too.
Our post on Additional Ingredients.
From The Table,
It's all about the juice..