TikTok has a vaping problem. Although a 2019 U.S. law made it illegal to sell or market e-cigarettes to anyone under the age of 21, TikTok videos featuring top brands of disposable e-cigarettes and vapes for sale have been relatively easy to find on the app. These videos, set to popular and upbeat music, clearly target a teenage customer base with offers of now-unauthorized cartridge flavors like fruit and mint in the form of a disposable vape.