For most people, medication is the right place to start. Here's a straight look at how the leading options stack up on evidence and side effects.
At a glance
| Treatment | What it does | Evidence | Notes |
|---|---|---|---|
| Minoxidil | Grows & thickens hair | Strong (~84% respond) | OTC topical or low-dose oral; consistency matters |
| Finasteride | Blocks DHT (type 2) | Strong (~80–90% halt loss) | Prescription; possible side effects |
| Dutasteride | Blocks DHT (type 1 & 2) | Strong; top agent in a meta-analysis | ~98% DHT drop; off-label in US |
| Minoxidil + finasteride | Grows and protects | Strong (~94% at 1 yr) | The standard first-line stack |
| Microneedling | Boosts absorption | Moderate | Best paired with minoxidil |
| Red light (LLLT) | Stimulates follicles | Moderate–strong | FDA-cleared, drug-free |
| Supplements & oils | Support hair health | Modest–early | Add-ons, not replacements |
Finasteride or dutasteride?
Both lower DHT. Finasteride blocks the type 2 enzyme; dutasteride blocks type 1 and type 2, cutting DHT far more completely (~98% vs ~71%) and topping a recent network meta-analysis as the single most effective drug. The trade-off is that stronger suppression can bring more side-effect risk, and dutasteride is used off-label for hair in the US. A doctor can help you weigh it.
Minoxidil or finasteride?
They do opposite jobs, which is precisely why they're paired. Minoxidil grows hair by extending the growth phase and improving circulation; finasteride protects it by shutting off the DHT that shrinks follicles. Each helps alone, but together roughly 94% of men improved at a year in a 450-patient study.
The practical takeaway
- Start with what's proven: minoxidil plus finasteride (or dutasteride) is the evidence-backed core.
- Layer on boosters: microneedling and red light can amplify results.
- Treat supplements and oils (Nutrafol, rosemary, copper peptides, melatonin) as complements, never substitutes.
- Start early — these treatments defend existing hair far better than they revive lost hair.
In-depth treatment guides
- What causes hair loss? — types & reasons
- Minoxidil — how it works, results & side effects
- Finasteride — DHT blocker, results & side effects
- Dutasteride — a stronger DHT blocker
- Microneedling / dermaroller — boost your topicals
- Red light therapy (LLLT) — caps & combs
- PRP, microneedling & stem cell therapy
- Women's hair loss — causes & safe treatments
- Hair transplant recovery timeline
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