What Vapes Have Diacetyl?
Quick answer: There’s no official public list of vape brands that contain diacetyl. U.S. brands generally don’t have to print flavoring chemicals on…
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Quick answer: There’s no official public list of vape brands that contain diacetyl. U.S. brands generally don’t have to print flavoring chemicals on the box, so the only reliable way to know is a lab test (certificate of analysis) from the manufacturer. Some brands state they’re “diacetyl-free” — ask for the test report behind that claim.
What diacetyl is
Diacetyl is a flavoring chemical with a buttery taste. It’s best known because workplace inhalation exposure in food-flavoring and microwave-popcorn plants has been linked to serious lung disease among workers.
What research has found in vapes
A 2015 Harvard study (Allen et al., Environmental Health Perspectives; read the study) tested 51 flavored e-cigarette products and detected diacetyl in 39 of them. That sample is now old and the market has changed, so it doesn’t tell you about any specific product sold today.
We’re not giving health advice here. If you have breathing concerns, talk to a doctor.
How to check a product
- Look for a published lab report (COA) from the manufacturer naming diacetyl and acetyl propionyl (2,3-pentanedione).
- Be cautious of “diacetyl-free” claims with no test behind them.
- Buy from authorized sellers so you’re getting the genuine product.
FAQ
Do Raz, Geek Bar, or Foger vapes contain diacetyl?
We don’t have published lab data for these brands, so we can’t say either way. Ask the manufacturer for a COA.
Is diacetyl banned in vapes in the U.S.?
Not by a specific federal ban that we can verify.
Sources (accessed Oct 22, 2026)
- Allen JG et al., Environmental Health Perspectives 2016 (online Dec 2015): Flavoring Chemicals in E-Cigarettes (PMC4892929)
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