e cigarettes ingredients Chemical characterisation of the vapour emitted by an e-cigarette using a ceramic wick-based technology Ingredients Used in E-Cigarettes

If your lip darkening matches the pattern described in this article (diffuse, concentrated on lower lip and vermilion border, developed gradually over years of smoking), it is almost certainly smoker's melanosis rather than something more serious

But of course, the best alternative is to stop consuming nicotine entirely

The federal Centers for Disease Control and Prevention reports that nearly seven in 10 adult smokers want to quit, and a similar percentage have tried to in the past year

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