Finasteride for Vertex (Crown) Hair Loss
Medically reviewed by [Reviewer Name, MD] | Last reviewed: August 2026 | Editorial policy
Bottom line: The vertex (crown/top of scalp) was the primary endpoint in the Propecia Phase III trials and showed the strongest response to finasteride. Finasteride is better documented for vertex regrowth and stabilization than for the hairline.
Vertex Hair Count Data (Propecia 1998 Phase III)
| Timepoint | Finasteride 1 mg (mean change) | Placebo (mean change) |
|---|---|---|
| Month 12 | +107 hairs (target vertex area) | −138 hairs |
| Month 24 | +138 hairs | −244 hairs |
| Net advantage at 24 months | ~382 hair count difference vs. placebo | |
Vertex vs. Hairline: Which Responds Better?
The Propecia trials were specifically designed around vertex endpoints. Hairline (anterior/temporal) data from the same trials showed finasteride was effective in 37% of men at the hairline by year 2, vs. 66% at the vertex. The hairline is generally less responsive than the crown to finasteride therapy. This is consistent with the biological observation that frontal hairline follicles have greater intrinsic androgen sensitivity.
When Is Vertex Loss Too Advanced?
Finasteride is most effective when follicles are miniaturized but not yet terminally lost. Men with Norwood Stage VI–VII extensive vertex loss have less recoverable follicular reserve. Earlier intervention produces better outcomes. If the scalp is visibly slick at the crown (no fine vellus hairs visible), a dermatologist can assess whether follicle viability remains via trichoscopy.
See: Results timeline | Hairline results | Clinical before & after data | Finasteride for AGA