Back when CBD products and hemp were both initially legalized in 2014, the rules regarding the change in law were still ambiguous.
I used to buy CBD flower products on the internet as early as 2015, however there were warnings of the possible jail time a single could earn from putting what is essentially cannabis through the UPS. Gladly all of that ambiguity was resolved with the passage of the 2018 Farm Bill. CBD and hemp were labeled with different designations instead of “marijuana” and were removed from the Control Substances list. Any cannabis plants with content of less than 0.3% THC inside are labeled as “hemp” and are completely legal to grow, sell, process, hold, or purchase in the US. But once that THC level rises above 0.3%, the cannabis plant is labeled with the typical designation as “marijuana” from the Controlled Substance Act and the DEA. As long as CBD has been extracted from “hemp” varieties of cannabis, it’s nice to sell or possess. This implies that anyone could theoretically open a CBD shop and start selling hemp and CBD products in their home community. However, you might want to slow down before jumping to conclusions about any potential success in the CBD market. There are so many CBD shops in my town and most of them have already gone out of business. They couldn’t compete because they weren’t offering enough particular hemp products that you couldn’t find at the grocery store or pharmacy. Most people like myself get their CBD products online, so that makes it even harder for physical CBD shops to survive in 2022.