Only FDA authorized vape products are available for purchase in Kentucky. Here's what to know A new Kentucky law requiring smoke shops to obtain updated retail licenses takes effect Jan. 1, marking a significant step in efforts to prevent youth vaping across the state. Details below. Kentucky smoke shops must obtain new licenses as new law takes effect KY Focusing on Youth Vaping How Old Do You Have to Be to Vape By State? The Hemp Doctor How Old Do You Have to be to Vape? Minimum Legal Age? LOOKAH