How Juul went from a $38 billion darling to uncertain future and FDA investigation Juul Can Breathe After Dodging Full FDA Ban on Flavored E Cigs WIRED The FDA is allowing vaping brand Juul to keep its e cigarettes on the market. Studies from Juul show its e cigarettes are less harmful for adult smokers, who can benefit from switching completely Safe smoking alternative e cigarette revealed as dangerous and addictive