44 citations
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March 2020 in “Antibiotics” The researchers reported that carnosic acid and carnosol, extracts from rosemary leaves, specifically inhibit S. aureus virulence expression, suggesting potential topical treatments for atopic dermatitis flares.
22 citations
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August 2009 in “Evidence-based Complementary and Alternative Medicine” This study found that a composition including Serenoa repens extract and anti-inflammatory agents effectively suppressed inflammation-related gene expression in a keratinocyte model, suggesting a potential dual strategy for treating androgenetic alopecia.
3 citations
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March 2016 in “Phytotherapy Research” In laboratory tests, this study found that a novel natural composition targeting 5-alpha reductase and inflammatory pathways reduced disease-related markers in androgenetic alopecia and benign prostatic hyperplasia more effectively than finasteride.
October 2025 in “JCI Insight” In a mouse model, this study found that an ethanol-based rosemary extract speeds up wound healing and reduces scarring by activating the TRPA1 nociceptor in sensory neurons, with carnosic acid identified as a key component.
This review explores the potential of carnosic acid, a compound found in rosemary and sage, as a natural alternative treatment for alopecia, highlighting its antioxidant, anti-inflammatory, and hair follicle-regenerative properties, though its poor solubility and stability remain challenges for clinical application.