- Joined
- Sep 3, 2025
- Messages
- 736
- Solutions
- 1
- Time Online
- 1d 11h
- Reputation
- 1,580
Finasteride
Finasteride inhibits type II 5-Ξ±-reductase, lowering scalp DHT and slowing miniaturization in androgenetic alopecia. Consistent use preserves density and increases hair counts in controlled trials. Effects stabilize after ~6β12 months and are maintained with continued use. It is pharmacologic, not βnatural,β and remains a cornerstone when the goal is long-term scalp preservation.
References
Finasteride inhibits type II 5-Ξ±-reductase, lowering scalp DHT and slowing miniaturization in androgenetic alopecia. Consistent use preserves density and increases hair counts in controlled trials. Effects stabilize after ~6β12 months and are maintained with continued use. It is pharmacologic, not βnatural,β and remains a cornerstone when the goal is long-term scalp preservation.
Blocks conversion of testosterone to DHT in follicular units with ~60β65% scalp DHT reduction; serum DHT typically drops ~60β70% at therapeutic dosing. Reduced DHT- decreased androgen signaling in susceptible follicles, slower miniaturization and improved anagen ratios.
Randomized, placebo-controlled trials show increased hair counts and global photographic improvements at the vertex and mid-scalp. Longitudinal data confirm maintenance with ongoing therapy, with relapse on discontinuation.
Commonly stacked with topical/oral minoxidil and ketoconazole shampoo. Consider labs/MD oversight if you have endocrine concerns. Any switch to dutasteride should consider higher DHT suppression and risk/benefit.
References