PP405: Regrows Hair In 8 Weeks. Is This The Miracle Cure?

Research/Science 2/1/2026

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.

PP405, a topical treatment, shows promise for hair growth by activating inactive follicles, with 66% of participants experiencing positive results. The treatment is well-tolerated and may proceed directly to Phase 3 trials, offering a potential alternative to minoxidil and finasteride.

Minoxidil 5% foam was used twice daily for 4 months, resulting in visible hair regrowth. Users discussed adding finasteride for better long-term results, with concerns about its side effects and alternatives like breezula and clascoterone.

New hair loss treatments PP405 and VDPHL01 are discussed with skepticism and hope, alongside existing treatments like minoxidil and finasteride. Users express frustration over limited progress since the 1980s but remain cautiously optimistic.

Oral minoxidil and finasteride effectively improved hair growth and stopped hair loss, with no major side effects. The user switched from topical to oral minoxidil, added finasteride, and later transitioned to dutasteride, experiencing regrowth and thicker hair.

PP405 is considered a promising hair loss treatment, potentially replacing minoxidil but not finasteride. Users are hopeful for future treatments like GT20029 and VDPHL01, while remaining cautious about effectiveness and side effects.