WASHINGTON (AP) — The Food and Drug Administration is allowing vaping brand Juul to keep its e-cigarettes on the market, providing relief to a company that has struggled for years after being blamed for sparking the teen vaping trend.

FDA regulators last week said that Juul’s studies show its e-cigarettes are less harmful for adult smokers, who can benefit from switching completely to vaping.

The decision applies to both tobacco- and menthol-flavored versions of the reusable product, which works with nicotine-filled cartridges sold in two different strengths. Juul previously discontinued several fruit and candy flavors that were credited for increasing company sales but were favored by teens.

Juul will be one of only two American companies authorized to sell menthol-flavored vapes, which many adults prefer to tobacco flavor.

“This is an important milestone for the company and I think we made a scientifically sound case for the role that menthol can play in e-vapor,” said Juul CEO K.C. Crosthwaite.

Parents, politicians and anti-tobacco groups are expected to oppose the FDA’s decision. They have argued for years that Juul products should be permanently banned due to their role in triggering a yearslong spike in underage vaping.