Juul's nicotine salts are dominating the market and other companies want in The Verge Vape, Juul, e cigarettes and the FDA: Everything you need to know F.D.A. Approves Juul Vapes After Yearslong Delay The New York Times Juul and other major vape makers will testify before Congress How Do You Charge Juul How Long to Charge a Disposable Vape? FDA rescinds marketing ban on Juul vaping products CNN