Transparency: Receptra Naturals’ website has a database where you can look up lab reports for their products. The first time we checked, we got some 404 errors for a couple of the lab reports, but these glitches seem to have been fixed since then. We were able to see third-party lab reports for all their tinctures (though, apparently not for their topicals).
However, when compared to skin-care pillar ingredients like retinols and vitamin C, the research behind CBD's efficacy in skin care (especially beyond the realms of being a temporary topical pain reliever) is still relatively in its infancy. "There is limited data to suggest that CBD may decrease oil production when applied topically," says Joshua Zeichner, director of cosmetic and clinical research at Mount Sinai Hospital, who explains that unlike marijuana, which contains psychoactive THC, hemp seed oil is a common source of naturally anti-inflammatory cannabinoids — which is what ends up in all of those lotions and potions. "Hemp seed oil also acts as an emollient to smooth rough cells on the skin's surface and offers moisturizing benefits," he adds.
Pharmacology published a study in 2016 looking at medical marijuana for migraines, specifically in relation to its effects on serotonin, with very positive results. You’ll notice that neither study looked at CBD in isolation from other cannabinoids (which is an issue with a lot of research on CBD and pain). Truthfully, the research on CBD alone just isn’t sufficient to make any pronouncements about its effects on headache pain.