Use Flavoring Oils with Care in Mixing Vape Juice

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Flavoring oils are different from oil-based flavors and fragrances used in baking and cooking as well as in making perfumes.

Before you decide to mix your own flavors, dig deeper into the quality that goes into creating those flavoring oils.

I’m not sure how many vapers – experienced or otherwise – are aware of the differences in quality and safety of flavoring oils that are used in mixing their e-juices. I’ve found a few sources that question the presence of diacetyl and eugenol in some liquids. Rocket Fuel Vapes mentioned this in one of their blog posts.

“Since e-liquids primarily get their taste from food flavorings, many e-liquid flavors are at risk of containing diacetyl. Although the risks are much lower for vapers inhaling diacetyl-containing e-liquids than for workers in manufacturing settings handling diacetyl, it is important to understand the potential consequences of extended diacetyl inhalation.”

“… The latest study of e-liquids found that those containing diacetyl may cause harm to the respiratory system over time. It is important to note that of the e-liquids tested, the average carries around 100 times less diacetyl than the traditional tobacco cigarette. The scientific community considers vaping an avoidable risk and seeks to arm users with the knowledge to determine the best course of action for one’s self.”

Diacetyl is a volatile organic compound with a yellow or green color. It’s generally used as food flavoring to bring out an intensely buttery taste in food items and beverages. It’s also naturally found in apples, artichokes, beans, butter, coffee, dairy, fruits, honey, tobacco and vinegar in very small amounts.

In comparison, it seems that eugenol may be as hazardous to respiratory health as diacetyl. A page at Medline Plus mentioned that this compound is often found in clove cigarettes:

Clove cigarettes, also called kreteks, generally contain 60% to 80% tobacco and 20% to 40% ground clove. Eugenol, one of the chemicals in clove, acts like menthol to reduce the harshness of tobacco smoke.

We all know that most e-juices available in the market today have not been thoroughly tested by the FDA. If you’re unsure of the quality of your chosen flavorings and additives, then check out this Guide to Flavouring provide by Planet of the Vapes.

Experienced vapers have been using these commercial flavoring oils as ingredients in their custom e-juices, and so far, there haven’t been any reports of someone falling grievously ill after inhaling those vaping liquids. Their flavoring strengths vary, but they usually fall into one of three ranges: between 5% and 10%, between 10% and 20%, and between 20% and 50%.

The decision to inhale these e-liquids is your personal responsibility, and you should take more than a few minutes pondering over the consequences of using some of these flavoring oils in creating your custom e-juices. In the end, however, it all comes down to your ability to make discerning judgments on what’s good and bad for your health.

For more information on flavoring oils and DIY e-juice mixing, check out the following links:

Essential Oils in E-Juice or as Flavorings – the post describes a few techniques in mixing e-juices using some flavoring oils

Ingredients to Avoid Using in DIY – you’ll find this forum thread very useful

Vaping essential “oils” and lipid pneumonia – read the lively discussion that ensues in this Reddit thread


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Calvin started vaping in 2004 after being a smoker for 17 years and hasn’t looked back since. He was a pack a day smoker that had tried the patch, the gum, the lozenges and the hypnotist. Nothing seemed to work! He came across a cig alike at a mall booth and finally found something to help him move away from traditional tobacco. Vaping has changed his life. He feels healthier and he can breathe again. Calvin has seen a lot of changes in the electronic cigarette market since 2004 and loves the innovation that has gone into the new products on the market today.

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