Where do those underage get tobacco and vapor products? A federal law changed the age requirement to buy tobacco products to 21, Wisconsin's state law still sits at 18. FDA Regulations For And Against Vaping ECIGS International How Old Do You Have to be to Vape? Age Limits in Various Countries Age Requirements for Buying Vapes: What You Need to Know Clutch Vape A majority of surveyed parents didn't know a person must be 21 to purchase tobacco products in the United States. The federal age limit for buying cigarettes, vapes, nicotine pouches and other