Vape Age Laws: Minimum Age to Buy Vapes in the U.S. & Online How Old Do You Have to Be to Vape? Firefly Vapor 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 Teen Vaping: Loopholes in age verification causing easier access to e cigarettes