How Old Do You Have to be to Vape? Minimum Legal Age? LOOKAH 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 Did you know that the legal age to purchase and use vaping products in the United States is 21 years of age? For more information about youth nicotine use visit https: med.stanford.edu halpern felsher reach lab parent corner.html 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 How Old Do You Have to Be to Vape? Complete Guide