November 2023 in “Journal of Basic Microbiology” This study explored the fungal diversity on human scalps, identifying 15 genera and 24 species from 18 scalp samples of girls, with yeast-like structures found in 33.3% of cases. Additionally, zinc oxide nanoparticles, synthesized using ginger extract, showed significant antifungal activity against specific species.
June 2026 in “British Journal of Dermatology” This study reviewed human evidence on the effects of 5α-reductase inhibitors, finasteride and dutasteride, on semen parameters and gonadotrophins, finding finasteride causes mild, reversible changes, while dutasteride may lead to more pronounced and potentially less reversible impacts, suggesting caution for those planning to conceive.
15 citations
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July 2019 in “Journal of Investigative Dermatology” This exploratory study found that cannabidiol (CBD) at higher concentrations may inhibit hair growth by promoting the onset of catagen in human hair follicles, while lower concentrations showed potential anti-inflammatory effects without promoting catagen.
3 citations
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April 2019 in “Journal of Dermatological Treatment” This review discusses the use of phosphodiesterase inhibitors for alopecia, finding promising preliminary results with topical caffeine for androgenetic alopecia and telogen effluvium, but limited success in alopecia areata.
September 2025 in “Journal of Natural Remedies” This review article concluded that certain herbal remedies targeting 5-alpha reductase inhibitors may prevent hair loss in androgenetic alopecia by blocking dihydrotestosterone production, although standardizing the concentration of active herbal compounds remains a challenge.