PP405 is discussed as a potential adjunct therapy for hair loss, with skepticism about its effectiveness and trial results. Users mention combining it with finasteride and minoxidil for better results, while others debate the root causes of hair loss and the limitations of current treatments.
Hair loss is linked to cellular physiology and the IGF-1 to TGF-B1 ratio, not just androgen sensitivity. The theory lacks evidence, while finasteride and minoxidil are effective treatments.
Quercetin and houttuynia cordata extract may stimulate hair growth by enhancing cellular energy metabolism and increasing growth factor secretion. Quercetin has low oral bioavailability, and its natural tint might stain the scalp if used topically.
Hair loss treatments include topical and oral minoxidil, low-level laser light therapy, and peptide serums. Bryan Johnson avoids finasteride and dutasteride due to potential side effects, focusing instead on his own protocol with these treatments.
PP405 is a promising experimental topical treatment for alopecia that reactivates dormant hair follicles by targeting cellular energy, with large-scale trials planned for 2026. While it shows potential, it cannot regenerate permanently destroyed follicles, making hair transplants the only guaranteed solution for advanced baldness currently.