How Old Do You Have to Be to Vape BOOST! Kids Health Info : Vaping and e cigarettes How Old Do You Need to Be to Vape? 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 Vape? Vaping360 Featured in WIRED. The conversation around vaping is shifting, and people are noticing. With biometric age verification and smarter device technology entering the space, the focus is moving beyond the product itself