Must Read No Vaping Laws and Signs by State Best Of Signs Blogs for Banners Printing Tips & Services Just a reminder, the minimum age to buy nicotine products in Indiana is 21. This means retailers are prohibited from selling cigarettes, e liquids, and e cigarettes to anyone under age 21. We USA: Illegal Vapes Tobacco Insider how old do you have to be to vape Definitive Guide Denton smoke shops prepare as Texas outlaws THC vapes, Chinese made e cigs and more starting Sept. 1 Business dentonrc.com