August 2010 in “한국한의학연구원 논문집” In this animal study, Phellodendri Cortex extract reduced prostate tissue damage and inhibited 5α-reductase gene expression in rats with experimentally induced benign prostatic hyperplasia.
January 2010 in “Journal of Oriental Medicine” This study found that Phellodendri Cortex Ex may reduce prostate tissue damage and inhibit $5{\alpha}$-reductase gene expression in a rat model of benign prostatic hyperplasia, suggesting potential therapeutic benefits.
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August 2016 in “Scientific Reports” This animal study found that Cinnamomi cortex water extract reduced prostate weight and improved histological changes in a benign prostatic hyperplasia model, suggesting potential as a treatment.
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December 2020 in “Scientific Reports” This study found that a mixture of plant extracts significantly improved skin barrier function, reduced inflammation, and exhibited anti-aging effects in human skin cells.
January 2026 in “Frontiers in Natural Products” This study found that combining shikimic acid with Prunus mume fruit extract significantly reduces type I 5α-reductase levels in testosterone-stressed skin sebocytes, surpassing the effects of shikimic acid or standard acne treatments alone, and shows promise for stable, non-irritating acne remedies in cosmetic formulations.