Illinois and Chicago permit the retail sale of CBD products, as long as they are derived from hemp, another plant in the cannabis family, and have less than 0.3 percent of the psychoactive cannabis compound THC. If a firm discloses in its business license that it is selling CBD products, the city is making note of it in case additional regulations are adopted, Lilia Chacon, spokeswoman for the Department of Business Affairs and Consumer Protection, said in an email.