How Old Do You Have to Be to Vape in the UK? Legal Guide 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 You'll have to be 21 to buy cigarettes or vape products in Washington starting Jan. 1, 2020 KNKX Public Radio How Old Do You Have to Be to Buy Vapes in the UK? 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 Need to Be to Vape?