How Old Do You Have to Be to Vape By State? The Hemp Doctor California's smoking age raised from 18 to 21 under bills signed by Gov. Brown Creating a smokefree generation and tackling youth vaping: what you need to know Department of Health and Social Care Media Centre The legislation started out as a bill to increase the tax on vapes, but it quickly morphed into a broader law that dramatically scales back what vapes can be sold after wholesalers, Where do those underage get tobacco and vapor products?