April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology”
This study found that HPV8-induced actinic keratoses may mechanistically involve Lrig1+ hair follicle keratinocyte stem cells, with the E6 gene promoting downstream STAT3 activity in a mouse model.
October 2025 in “Clinical Cosmetic and Investigational Dermatology”
This study synthesizes knowledge of how dendritic cell signals, epithelial integrins, and fibroblast activity converge on TGF-β1 to maintain or disrupt skin healing, contrasting normal and fibrotic scar formation and suggesting possible integrin and immune-targeted treatments for skin fibrosis.
8 citations
,
May 2013 in “Journal of Investigative Dermatology”
This review explores the molecular processes behind hair follicle stem cell activation and suggests new potential targets for designing therapies for various types of alopecia, but it reports no clinical results.
PP405 shows significantly better early-stage hair regrowth results compared to minoxidil and finasteride, with 31% of users experiencing over 20% density increase in 4–8 weeks. Minoxidil and finasteride show minimal or no visible regrowth in the same timeframe.
Peptides like TB500, KPV, GHK-CU, and BPC-157 are overhyped for hair growth with limited proven effectiveness in humans. Combining peptides with delivery methods like iontophoresis and sonophoresis shows promise, but many claims remain unproven.