Hair comparison
Topical vs oral finasteride: side effects compared
Reviewed by the FaroRx clinical team · Updated September 2026
The short answer
Oral finasteride lowers DHT throughout the body and has the strongest evidence for stopping hair loss. Topical finasteride targets the scalp with much lower systemic absorption, so sexual side effects are reported less often, though the evidence base is smaller. Many people who stop oral finasteride because of side effects continue successfully on a topical formulation.
The trade-off
| Oral finasteride | Topical finasteride | |
|---|---|---|
| Evidence | Large long-term trials | Smaller studies, promising |
| Systemic DHT reduction | Around 70% | Much lower |
| Sexual side effects | Reported by a small minority | Reported less often |
| Routine | One tablet daily | Applied to the scalp daily |
Who should consider topical
- You had side effects on oral finasteride.
- You are concerned about systemic hormonal effects.
- You want to combine finasteride and minoxidil in a single nightly step.
- You prefer not to take a daily tablet.
The FaroRx safety note
FaroRx medications are prescription-only. A licensed provider reviews your intake, medical history and medication list before anything is prescribed, and can decline if a treatment is not appropriate for you. Nothing here is medical advice.
Common questions
Is topical finasteride as effective as oral?
Studies suggest it is close for scalp hair, with less systemic exposure, but the long-term evidence base is smaller than for oral.
Can women use finasteride?
Finasteride is not prescribed to women who are or may become pregnant. Your provider will discuss alternatives.
Which does FaroRx offer?
Both — oral finasteride from $35/mo, and topical finasteride as part of the 4-in-1 hair spray at $119/mo.
Ask a provider which fits you
Complete a short online visit and a licensed provider will review whether treatment is right for you.
This guide is for information only and is not medical advice. Compounded medications are prepared by a licensed U.S. pharmacy and are not FDA-approved products.