Diacetyl in Vape Juice: What You Need to Know

Diacetyl is a chemical which has been widely used in food and beverage flavorings. Diacetyl can be found in vape juices too, allowing vape companies to produce fruit flavors. Dairy flavorings, especially those involving butter, but also those including cheese, milk, and yogurt, are the primary sources of diacetyl.

Diacetyl can also occasionally be a key component of "brown" flavors, such as coffee, butterscotch, and caramel, the flavors are widely used in vape juice. These days, snack items like microwave popcorn, baked goods, and sweets are the main sources of flavor containing diacetyl.

What is Diacetyl ?

Diacetyl, often referred to as 2,3-butanedione by experts, with the chemical formula (CH₃CO)₂ is an organic substance with a buttery flavor that is frequently found in dairy, candies, and baked goods. It's a diketone that can be harmful if inhaled in excess, possibly leading to inflammation of the lungs and ailments such as "popcorn lung." Although diacetyl is typically safe to consume, breathing it in, particularly in occupational settings, has caused some worry.

With vape critics trying to besmirch the vaping industry, diacetyl has been a common talk among people against vaping. Despite a lot of voices being raised against vape juice and their use of diacetyl, it is actually very rare you will find instances of diacetyl used in e-liquid or vape juice.

Role of Diacetyl in Vape Juice

Ingredients for vape juice usually include flavorings, vegetable glycerine (VG), propylene glycol (PG), and optional nicotine. Despite the common belief that vaping is safer than smoking cigarettes, a closer examination is necessary due to the diversity of flavors in vape juice.

Few vape juices, especially those with creamy, buttery, or dessert-like flavors, use diacetyl as a flavoring ingredient. It gives these e-liquids a rich, buttery flavor that compliments their flavor character.  

Some of the e-liquid flavors that may contain diacetyl are:

  • Strawberry Cinnamon Roll
  • Coconut Cream Pie
  • Cotton Candy
  • Creamy Bean Berry

It is crucial to remember that not all vape liquids include diacetyl, and a lot of manufacturers currently provide alternatives without it. It is essential for consumers to be informed and make decisions that put their health first. 

The Risks of Diacetyl Inhalation

We need to pay attention to the serious health dangers associated with inhaling diacetyl vapors. Due to the clear link between inhalation and the emergence of respiratory issues, the possible risks connected with diacetyl exposure are especially concerning. 

Since workers in microwave popcorn factories were the first to report having "popcorn lung," scientific evidence has connected extended exposure to diacetyl to this illness. The symptoms of this respiratory disease include wheezing, shortness of breath, and chronic coughing. However, there haven’t been any direct links or cases resulting in popcorn lungs due to consumption of vapes or e-cigarettes.

Regulation and Safety Measures Regarding Diacetyl

To address concerns regarding diacetyl in vape juice, regulatory measures have been implemented to ensure consumer safety.  In the United States, the FDA has issued guidelines for manufacturers to test and label their products accurately, ensuring transparency about the presence of diacetyl and other harmful compounds. 

Industry standards have been established to promote safer vaping practices and protect consumers from potential health risks associated with diacetyl exposure. To reduce risks, consumers are advised to choose e-liquids from reputable brands that adhere to these regulations and prioritize product safety.

Identifying Diacetyl-Free Vape Juice

To identify diacetyl-free vape juice, carefully read the labels and ingredient lists. Avoid e-liquids that contain creamy, buttery, or dessert flavors, as diacetyl is often used as a flavoring agent in these products.

Choose vape juice from reputable brands whose formulas have deliberately removed diacetyl. A lot of brands sell e-liquids without diacetyl; some have even had independent testing done on their goods to confirm that this ingredient isn't present. 


In conclusion, diacetyl, a compound used to impart a buttery flavor in some vape juices, poses significant health risks when inhaled. While its use has been regulated in the US, diacetyl exposure remains a concern for vapers. To minimize risks, consumers should carefully read labels, avoid e-liquids with creamy or dessert flavors, and purchase from reputable brands that prioritize safety and transparency. 

By staying informed and making conscious choices not only vapers but also vape sellers, online shops, wholesalers, and convenient stores can take a safer side of the business while complying on regulations. Responsible vaping practices and continued research into safer alternatives are crucial for ensuring the well-being of the vaping community.

Diacetyl in Vape Juice: What You Need to Know
SEO NEPA June 16, 2024
Share this post