What’s actually in an e-cigarette?

Katherine Ellen Foley
What’s actually in an e-cigarette?

Juul is one of the largest e-cigarette companies on the market, and also one of the most transparent. It lists the main components of each of its pods—cartridges filled with 0.7 mL of e-juice—online. In the US, to legally sell vapes and e-juice, companies have to provide an ingredient list to the FDA—but they don’t have to make those lists public.