Vape Age Laws: Minimum Age to Buy Vapes in the U.S. & Online Texas health department investigating link between lung disease, vaping 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 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