PP405 is discussed as a potential hair loss treatment, with doubts about its effectiveness and availability. Users mention using finasteride and minoxidil, and express concerns about PP405's cost and market release.
A 23-year-old male experiencing worsening hair loss has tried topical Minoxidil, Finasteride, Progesterone, Hydrocortisone butyrate, and Ketoconazole. He is considering switching to oral Finasteride due to concerns about side effects and lack of improvement.
Finasteride can affect sperm quality, but fertility usually returns after stopping it, as shown by a user who conceived four months after discontinuation. Some users successfully conceive while on finasteride, though some prefer to pause its use to minimize risks.
Dutasteride and finasteride may temporarily affect semen quality but are unlikely to cause permanent infertility. The Kim et al. study is criticized for poor methodology, and many prefer hair retention over potential fertility concerns, using treatments like dutasteride, finasteride, and minoxidil.
Hmi115, a prolactin receptor blocker, showed promise for hair growth, but results from Phase 2 trials have not been published. ABS-201, an AI-based analog, is expected to begin trials in December 2025, while commercialization of treatments like PP-405 is anticipated around 2027.