Legal Age For Buying Vapes You Must be 19 Years Older to Purchase Vape Cigs and E Liquid Sign signs by salagraphics 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 How Old Do You Have to be to Vape? Minimum Legal Age? LOOKAH 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