smoke from a cigarette Scientists Search For Toxins In Residue Smoking - Wikipedia

E-cigarettes heat small amounts of an e-liquid containing nicotine (extracted from tobacco), flavoring, and other chemicals to produce a vapor that can be inhaled

The idea of gradually reducing the addictive ingredient of cigarettes, nicotine, looks attractive on the surface, said Robert West, professor of health psychology at University College London

Youre not going to learn much by comparing vapes based on their puff counts, though, because manufacturers have different methods of determining how many puffs their devices should deliver

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Lowering the pH makes the vapor smoother on the throat, even at high concentrations