All this means that scientists can still only obtain marijuana-derived CBD from farms licensed by the National Institute on Drug Abuse (which until this year meant only one farm owned by the University of Mississippi). As for whether you should have a preference for CBD that comes from hemp, marijuana, or a pure synthetically produced version, there are some theories that THC—and even the smell and taste of cannabis—might make CBD more effective, but Bonn-Miller says these ideas have yet to be proven.
The wide range of benefits contained in full-spectrum CBD extracts means some CBD merchants have either ceased to sell, or scale down the promotion of CBD isolate, in comparison to the whole-plant extract variety. Companies and individuals who extract CBD themselves are realising that cannabis has more to offer medicinally than just CBD or THC, and that there is little to no reason to not include all that this "super-plant" has to offer in the extraction process.
Research suggests that CBD may exert some of its pharmacological action through its inhibition of fatty acid amide hydrolase (FAAH), which may in turn increase the levels of endocannabinoids, such as anandamide, produced by the body. It has also been speculated that some of the metabolites of CBD have pharmacological effects that contribute to the biological activity of CBD.
Since human skin has shown to have such a low rate of absorption for cannabinoids, the application has to be quite heavy. Think of it as a barrier that you’re pushing through. As such, CBD topicals generally direct consumers to implement a liberal application to the desired area. CBD is much more prone to penetrating through the skin in comparison to THC however, and it’s also a lot more likely to engage the CB2 cannabinoid receptors. This makes CBD a much more popular choice for creating cannabis derived CBD Topical Cream. CBD also has a lot of hemp content, making hemp a great source for CBD topicals.
Third-party testing: Once a CBD oil is manufactured, CBD oil companies will often submit their products for third-party tests, which are conducted by non-company personnel to ensure the product is safe for public consumption and meets quality standards.CBD oils should always be accompanied with information about third-party tests; best practice is to avoid oils that do not supply these details.