The FDA Regulations say the minimum age to sell tobacco and vaping products is 18, but it may be different for your store. We Card Just a reminder, the minimum age to buy nicotine products in Indiana is 21. This means retailers are prohibited from selling cigarettes, e liquids, and e cigarettes to anyone under age 21. We Products Data Briefs Number 475 July 2023 What's the Legal Age to Vape? Everything You Should Know What's the Legal Age to Vape? Know Vaping Age Regulations How Old do you Have to be to Buy a Vape?