What Vapes Have Diacetyl? What the Official Sources Say
There is no official list of vapes with diacetyl. What the FDA HPHC list says and how to check a lab report.
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Quick answer: There is no official public list of vape brands or flavors that contain diacetyl. U.S. vape packaging generally doesn’t list individual flavoring chemicals, so the only way to know for a specific product is a lab test, such as a manufacturer’s certificate of analysis (COA). Diacetyl is on the FDA’s list of Harmful and Potentially Harmful Constituents.
Last updated: October 24, 2026 · By Smokey Cloudz Team. Facts and official sources only; not medical advice.
What vapes have diacetyl?
We can’t name specific products, and we don’t publish claims about any brand’s ingredients without a manufacturer test report. A study published in Environmental Health Perspectives (Allen et al., 2016) detected diacetyl in 39 of 51 flavored e-cigarette products it tested. That sample is more than ten years old and doesn’t describe products sold today.
What is diacetyl in vaping?
Diacetyl (2,3-butanedione) is a flavoring compound with a buttery taste, used in some foods. A related compound, acetyl propionyl (2,3-pentanedione), is used in a similar way. In vaping, the question is whether either compound is present in a product’s e-liquid or aerosol, which only a lab test can answer.
Is diacetyl regulated in vapes?
In April 2026 the FDA added 18 constituents, including diacetyl and acetyl propionyl, to its HPHC list for tobacco products and their smoke or aerosol. HPHC listing relates to what manufacturers must test for and report to the FDA; it isn’t a ban on any product.
| Fact | Source |
|---|---|
| Diacetyl is on the FDA HPHC list | FDA HPHC page |
| Acetyl propionyl (2,3-pentanedione) is on the list too | FDA HPHC page |
| Both were added in April 2026 (18 additions) | Federal Register, April 23, 2026 |
| The list covers e-cigarettes, cigars, hookah and other tobacco products | FDA CTP newsroom |
| HPHC listing is about testing and reporting, not a product ban | FDA HPHC page |
| A 2016 study found diacetyl in 39 of 51 flavored products tested (older sample) | Allen et al., Environ Health Perspect 2016 |
Do Foger vapes have diacetyl?
We don’t know, and we won’t guess. None of the Foger product pages on our site list ingredient-level test results, and we don’t have a published Foger lab report to cite. If you want to check a Foger device, look for a COA on the manufacturer’s official website and use the checklist below. Without a report, the honest answer is “unknown.”
Does Geek Bar have diacetyl?
The same applies. Our Geek Bar product pages don’t list ingredient-level test results, and we don’t have a published Geek Bar lab report to cite. Check the manufacturer’s official website for a COA. Treat any “diacetyl-free” statement you find elsewhere as a manufacturer claim and look for the test behind it.
How can I check a specific product?
- Look on the manufacturer’s official website for a published lab report or COA.
- Check that the report names diacetyl and acetyl propionyl, the test method, the lab, and the batch or date.
- Treat a “diacetyl-free” label as a manufacturer claim; ask for the test behind it.
- If there’s no report, the answer is “unknown.” Don’t assume either way.
Sources
- FDA: Harmful and Potentially Harmful Constituents (HPHCs)
- Federal Register (April 23, 2026): HPHC Established List Additions
- FDA CTP: FDA Adds 18 Constituents to the HPHC List
- Allen JG et al., Environ Health Perspect 2016;124(6):733–739: Flavoring chemicals in e-cigarettes
Sources checked October 24, 2026.
FAQ
Is “diacetyl-free” a regulated claim?
No official definition is cited on the FDA pages above. Treat it as a manufacturer claim and ask for the test report.
Is acetyl propionyl the same as diacetyl?
No. It’s a related flavoring compound (2,3-pentanedione). Both are on the FDA HPHC list.
Does the HPHC list ban diacetyl in vapes?
No. The HPHC list relates to what manufacturers must test for and report to the FDA. It isn’t a ban on any product.
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