November 2022 in “Journal of Investigative Dermatology” In this study, a serum containing Silybum marianum extract, Manganese PCA, and Lespedeza capitata extract improved hair growth and prolonged the anagen phase in a human scalp skin model.
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November 2022 in “Experimental cell research” This study found that a PGE2 matrix, when injected subcutaneously, increased the proportion of developing hair follicles and improved hair follicle stem cell markers in a mouse model of hair loss.
April 2024 in “Biomedicine & pharmacotherapy” This study observed that pilose antler extract promoted hair growth in mice with androgenetic alopecia by stimulating the hair follicle growth cycle via the SHH/GLI pathway activation and BMP/Smad pathway suppression.
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August 2008 in “The Journal of Clinical Endocrinology & Metabolism” In this study, T3 and T4 were found to directly influence human hair follicles in vitro, enhancing keratinocyte proliferation, prolonging the hair growth phase, and affecting pigmentation.
April 2021 in “Journal of Investigative Dermatology” This study suggests that edelweiss extract may promote hair growth and reduce shedding in ex vivo experiments by affecting hair follicle anagen phase duration and keratinocyte proliferation.