Which brands contain diacetyl in their vape juice?

Regarding the brand information of the diacetyl component in e-liquid, I have not found a real-time updated list that includes all the brands containing diacetyl. This is because the formula of e-liquid may change, and there may also be differences among different batches of products.
However, based on industry information from a few years ago, I have compiled a list of some brands that have publicly stated that their products do not contain diacetyl. I hope this can provide you with some references.
?? Brands that have stated no diacetyl content
The following table lists the statements made by two brands regarding the absence of diacetyl in their products during the period of 2015-2016. Please note that this information is from a long time ago and the current situation of the products requires further verification by you.
Brand Name Related Statement Statement Time/Source
Alfaliquid The brand has released independent laboratory analysis reports, showing that its products have not detected any problematic substances such as diacetyl. When entering the US market, it also clearly advertised that its products have been certified to be free of diacetyl (i.e., butyric acid). 2015 - 2016

J-Well In its 2015 press release, the brand stated that since its establishment, it has prohibited the use of diacetyl in e-liquid, and its products comply with the French AFNOR standard and have been certified. 2015
?? How to identify if a product contains diacetyl
Since it is impossible to obtain a real-time and comprehensive list of brands, I suggest you actively identify and choose products through the following methods, which is more reliable for protecting your health:
Check the product labels and instructions: Opt for those products that clearly state "不含 diacetyl" on the packaging or on their official website. Responsible brands usually provide this kind of information voluntarily.
Understanding high-risk flavors: Diacetyl is often used to create flavors such as buttery, creamy, and dessert-like flavors (such as caramel, cookies, cakes, etc.). If you prefer these types of flavors, you need to pay extra attention to the ingredient list when choosing products.
Pay attention to safety standards: You can check whether the product complies with some strict safety standards. For instance, the industry standard of China (YQ-EL/T 1.2-2017) sets clear limits for the content of diacetyl in e-liquid.
I hope these details will help you make a safer choice when selecting e-liquid. If you have more questions about specific flavors or brands, I can assist you in finding relevant discussions and information.