Finasteride / Dutasteride vs Minoxidil
Both are used for skin & hair. Here's how they compare on human evidence, mechanism, safety and availability — in plain English.
| Finasteride / Dutasteride | Minoxidil | |
|---|---|---|
| Human evidence | ★★★★★ | ★★★★★ |
| Legal status | FDA Approved | FDA Approved |
| How it works | Inhibit 5α-reductase (SRD5A2), blocking testosterone→DHT conversion. DHT drives male-pattern hair loss and prostate growth. Finasteride hits type II; dutasteride hits I and II. | Opens ATP-sensitive potassium channels (KCNJ) → follicular vasodilation and prolonged anagen (growth) phase; also a sulfotransferase-dependent prodrug. |
| In plain English | Testosterone gets converted into a stronger cousin (DHT) that kills scalp follicles. These drugs block that conversion to save hair — but for a minority, lowering DHT dents libido/mood ("post-finasteride" concerns). | Widens blood flow to follicles and keeps hairs in their growth phase longer. Paired with finasteride, it's the core of proven hair-loss treatment. |
| Bottom line | Most effective hair-loss drug; weigh the sexual-side-effect risk honestly. | Half of the evidence-based hair-loss protocol (with finasteride). |
| Availability | Available over the counter | Available over the counter |
Which is better for skin & hair?
Both carry a comparable human-evidence rating (★★★★★). Choose on mechanism fit, side-effects, availability and cost rather than evidence strength alone — they work through different mechanisms.
Full breakdowns: Finasteride / Dutasteride · Minoxidil.
Common questions
Is Finasteride / Dutasteride or Minoxidil better for skin & hair?
Both carry a comparable human-evidence rating (★★★★★). Choose on mechanism fit, side-effects, availability and cost rather than evidence strength alone — they work through different mechanisms.
What's the difference between Finasteride / Dutasteride and Minoxidil?
Finasteride / Dutasteride: Most effective hair-loss drug; weigh the sexual-side-effect risk honestly. — Minoxidil: Half of the evidence-based hair-loss protocol (with finasteride).