There are many over-the-counter whitening strips or gels that you can use
For our analysis of these latest data see p.62 of the report: The Global State of Tobacco Harm Reduction 2022: The Right Side of History See also p.157 of the report for further analysis of the 2020 data: Burning Issues: The Global State of Tobacco Harm Reduction 2020 Legal Status of Nicotine Vaping Products - Burning Issues: The Global State of Tobacco Harm Reduction 2020 Beyond the big picture there is a whole panoply of regulatory options covering product registration, safety and limitations (such as nicotine content, and flavour bans), taxation levels, online sales, age-purchase limitations and public space vaping
And if you carry it in your pocket with keys or change, or in your suitcase with nail clippers or any metal part, a short-circuit can occur
Cigarette Tobacco: Highly regulated, with strict labeling, health warnings, and excise taxes
And because all five strengths are available in every flavor, you dont have to choose between what you like and what works