3 Bottles of E-Liquid

What is acetoin?

After diacetyl was revealed as a toxin leading to “popcorn lung”, a violent and possibly fatal disease caused by its direct inhalation, acetoin was created as a substitute flavourant. It is intended to provide a creamy, buttery taste to e-liquids but is now considered a lung irritant as it can actually be converted to diacetyl while vaping.