A Juul is not a cigarette. It’s much easier than that. Through devilishly slick product design I’ll discuss here, the startup has massively lowered the barrier to getting hooked on nicotine. Juul has dismantled every deterrent to taking a puff.

The result is both a new $38 billion valuation thanks to a $12.8 billion investment from Marlboro Cigarettes-maker Altria[1] this week, and an explosion in popularity of vaping amongst teenagers and the rest of the population. Game recognize game, and Altria’s game is nicotine addiction. It knows it’s been one-upped by Juul’s tactics, so it’s hedged its own success by handing the startup over a tenth of the public corporation’s market cap in cash.

Juul argues it can help people switch from obviously dangerous smoking to supposedly healthier vaping. But in reality, the tiny aluminum device helps people switch from nothing to vaping…which can lead some to start smoking the real thing. A study[2] found it causes more people to pick up cigarettes than put them down.

Photographer: Gabby Jones/Bloomberg via Getty Images

How fast has Juul swept the nation? Nielsen says it controls 75 percent of the U.S. e-cigarette market up from 27 percent in September last year. In the year since[3] then, the CDC says the percentage of high school students who’ve used an e-cigarette in the last 30 days has grown 75 percent. That’s 3 million teens or roughly 20 percent of all high school kids. CNBC[4] reports that Juul 2018 revenue could be around $1.5 billion.

The health consequences aside, Juul makes it radically simple to pick up a lifelong vice. Parents, regulators, and potential vapers need to understand why Juul works so well...

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