What’s in my E-Liquid?

It is understood that vaping E-Cigarettes causes far less harm than smoking traditional cigarettes. This is why numerous people are choosing to replace their analogue cigarettes with E-Cigarettes as an alternative.
E-Liquid – the fuel of an E-Cigarette – may be less harmful to inhale than traditional cigarettes, however we should maintain an awareness of the chemicals that go into an E-Liquid when browsing the ranges available. Some of the chemicals in E-Liquids have been known to cause lung irritation when inhaled, and may cause health problems after prolonged use.
Here we would like to provide a list of the chemicals consumers should look out for when choosing the right E-Liquid.



Diacetyl is a chemical that is found naturally (in small amounts) as a byproduct of fermentation. It’s found in foods such as butter and alcoholic beverages. Because of its buttery taste, diacetyl is sometimes added to enhance the flavour of food – such as sweets, popcorn, chips, cheese and coffee.

The buttery flavour that diacetyl provides is also the reason why it’s used as a flavouring in some E-Liquids. However, reports suggest that the chemical may be dangerous when it’s heated up and inhaled. It has been linked to medical problems (including Bronchiolitis obliterans, a serious disease of the lungs) in people working in food production where diacetyl is used, such as some popcorn factories.

It’s this process of heating and inhaling diacetyl that has been seen as possibly hazardous over time, and this is why many believe it’s advisable to look out for E-Liquids which are free of this chemical.


Acetyl Propionyl 

Like diacetyl, acetyl propionyl is a chemical that is used in some foods as a flavouring to enhance the buttery taste. Acetyl propionyl, similarly, is considered by many as safe to eat, but as a potential health risk when inhaled. The chemical has been reported to cause lung disease and other respiratory problems when inhaled frequently over a long period of time.

Therefore – similarly as with diacetyl –  we suggest that consumers should try to be aware of the acetyl propionyl content in E-Liquids, and to, where possible, purchase E-Liquids which are free of this chemical.



Acetoin is also utilised for its pleasant and buttery flavour. Acetoin is a yellowish liquid with an attractive odour that’s obtained from carbohydrates by fermentation.

Acetoin may also lead to health problems – specifically respiratory problems – when heated up and inhaled over a long period of time. It is sometimes used to enhance the flavours of certain E-Liquids (specifically ones with a sweet, buttery or bakery flavour, such as custard flavour), and therefore many believe it’s advisable to be mindful of this chemical content when browsing E-Liquids, and purchase acetoin free E-Liquids wherever possible.