Hemp-derived CBD is simply CBD extracted from the hemp plant. Most people often confuse hemp with marijuana, but there is a slight difference in their classifications and compositions as hemp plants usually contain 0.3% or less of THC by dry weight.
Essentially, it is the THC content in marijuana that has psychoactive properties, but both marijuana and hemp contain several other cannabinoids. Hemp contains only traces of THC, but still contains the full range of other healthy cannabinoids, allowing users to access the full range of healing benefits without the problems associated with THC. Marijuana is currently categorized as a Schedule 1 drug, making all products derived from it illegal under federal law and statutes in the United States
Also, the hemp industry is fully legalized and regulated, with 34 states in the United States having industrial hemp programs. This means that hemp contributes significantly to the growth of the US economy, and its by-products and fibers are used as energy sources and building materials.
Unless you reside in a country where medical or recreational marijuana is legal, the only way to safely use CBD is to use hemp-based CBD.