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 The FDA agreed to allow the sale of Juul's tobacco and menthol flavored e cigarettes after ordering them to temporarily remove its products from the market three years ago. FOX 5 reports on the Juul is back to its original mission with a second generation e cigarette JUUL2 Juul Labs Science