Study: Cannabis Seed Extracts Show Strong Anti-Aging and Skin-Protective Potential in New Research

New research published in Scientific African reports that cannabis seeds may be a promising source of skincare ingredients, with strong antioxidant activity and enzyme-inhibiting effects.

The study focused on phenolic-rich extracts derived from cannabis seeds, particularly an ethyl acetate fraction that demonstrated significantly higher biological activity than other tested fractions. Researchers found this extract exhibited strong antioxidant effects across multiple assays, suggesting it may help combat oxidative stress—a key driver of skin aging and inflammation.

In addition to antioxidant activity, the extract showed the ability to inhibit several enzymes directly linked to skin degradation and discoloration. These included elastase and collagenase, which contribute to the breakdown of elastin and collagen, as well as lipoxygenase, which plays a role in inflammation, and tyrosinase, a key enzyme in melanin production.

The extract’s inhibition of elastase was particularly notable, outperforming the study’s positive control, while also demonstrating meaningful activity against the other enzymes. Although not always as strong as pharmaceutical-grade controls, the results indicate that cannabis seed compounds may offer a safer, plant-based alternative for targeting multiple skin concerns simultaneously.

Chemical analysis revealed that the extract is rich in phenolic compounds, including hydroxycinnamic acid amides and lignanamides, such as cannabisins A and B. These compounds are believed to be responsible for the observed antioxidant and enzyme-inhibiting effects, with prior research suggesting they play a role in reducing inflammation and protecting skin structure.

The findings also highlight the potential value of cannabis seed byproducts, particularly the leftover material after oil extraction, which is often underutilized despite being rich in bioactive compounds.

Researchers conclude:

Beyond their demonstrated in-vitro antioxidant potential, hemp seed extracts also exhibit anti-collagenase, anti-elastase, anti-tyrosinase, and anti-inflammatory activities, offering a multifunctional approach to skin care. By mitigating oxidative stress, preventing the degradation of elastin and collagen fibers, inhibiting melanin synthesis, and modulating the inflammatory processes, these extracts show strong promise as a natural skin-brightening, anti-aging, and anti-inflammatory agents for cosmetic formulations. These findings emphasize the need to reconsider cannabis seeds as a valuable source of tyrosinase, elastase, collagenase, and lipoxygenase inhibitors and underscore the importance of further exploring their cosmetic applications. To further substantiate these results, future research should explore the molecular mechanisms underlying enzyme inhibition. In particular, molecular docking and dynamic simulations could provide deeper insight into the interactions between the identified phenolic compounds and skin-related enzymes. In parallel, the isolation of individual phenolic constituents and the elucidation of their structure-activity relationships would allow a clearer understanding of the compounds responsible for the observed bioactivities. Finally, in vivo investigations and well-designed clinical trials are essential to validate the biological relevance of these findings and to support their translation into practical cosmetic applications.