Delta 8 actually is THC. Delta 8 is shorthand for delta-8-tetrahydrocannabinol, which is a less potent form of the more widely known delta-9-tetrahydrocannabinol, the chemical used to measure the potency of marijuana strains. Delta 8 is found in marijuana strains, and it gained popularity due to its existence in marijuana’s fibrous cousin plant hemp. It has all of the same effects as Delta 9 THC and is considered legal across the United States since hemp is no longer prohibited by the Controlled Substances Act.