A 'historic victory,' say experts, as US raises age to buy tobacco, vaping products to 21 nationwide Fred Hutch Vaping under the age of 21 is illegal: How do kids get vapes? Legal Age to Vape: US State Laws You Need to Know 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 Iowa's Tobacco 21 Law Sieda Community Action What's the Legal Age to Vape? Know Vaping Age Regulations