cigarette under a microscope Tobacco smoke particles on filter fibre, SEM - Stock Image - C036/9807 Molecular Expressions: The Pharmaceutical Collection

Regulation of electronic cigarettes Regulation of electronic cigarettes varies across countries and states, ranging from no regulation to banning them entirely

Provenance and peer review: Commissioned, externally peer reviewed

A merchant shall conspicuously post a notice, on the merchant's premises, stating in text at least one inch in height that "No person under the age of twenty-one may be sold nicotine products, as defined in section 2 of this Act." Adjacent to the sign, the retailer must display a valid license issued under state law

[6] Leave it on there for up to 72 hours, then vacuum it up

In contrast, findings from another study, which assessed perceptions of Vuse e-cigarette authorization on Twitter, convey that the general public has more negative than positive views of FDA e-cigarette authorization due to wariness of potential health risks 13