Is Diacetyl in Vapes? Crystal Vape & Crystal Bar & SKE Vape Official Station Vapes are clouded in misconception . They contain many of the same toxic and cancer causing chemicals found in regular cigarettes. One of these ingredients is diacetyl, used in popcorn flavourings for its Community Request Diacetyl Center for Research on Ingredient Safety Fruit flavored vapes just cleared a major hurdle with the FDA. The Food and Drug Administration authorizing the marketing of fruit flavored e cigarettes, marking the first time it has approved this category of vaping