how old do you have to be to vape Definitive Guide How Old Do You Have to Be to Vape By State? The Hemp Doctor Did you know? The Tobacco 21 law raises the legal age to buy tobacco and vaping products from 18 to 21. Why? To help protect young people from a lifetime of addiction. The newly authorized vapes include Bluetooth linked age verification that requires users to confirm their identity with a government ID before the devices can function, as health groups warn flavored products have historically