Some Observations on the Proteins of the Inner Root Sheath Cells of Hair Follicles

Protein's role in hair growth is complex, with specific amino acids like cysteine being crucial for effective hair growth. Users discussed using l-cysteine supplements, noting reduced hair loss and faster growth, though some experienced digestive issues.

Hair follicle stem cells remain in bald individuals, but progenitor cells do not, raising questions about hair regrowth claims by Pelage. PP405 is discussed as a potential treatment, with skepticism about its effectiveness compared to existing treatments like Minoxidil and Finasteride.

Hair follicles are mostly dormant but can be reactivated with treatments like minoxidil, finasteride, and microneedling. A new drug, PP405, shows promise for hair regrowth but may not be available until 2027-2028.