Proven Hair Loss Treatments: Minoxidil, Finasteride, Transplant, LLLT

FDA-Approved & Evidence-Based Options

1. Minoxidil (Rogaine)

• Mechanism: K⁺ channel opener → vasodilation, prolongs anagen, enlarges miniaturized follicles.
• Forms: 2% solution (women), 5% solution/foam (men).
• Evidence: ~40% men, ~25% women achieve moderate regrowth at 1 yr.
• Caveat: Lifelong use; shedding at 2–8 wks; stops working if discontinued.

2. Finasteride (Propecia) / Dutasteride (Off-label)

• Mechanism: 5α-reductase inhibition → ↓ DHT (finasteride: type II; dutasteride: type I+II).
• Dose: Fin 1 mg daily; Dut 0.5 mg daily.
• Evidence: 80–90% halt loss; 60% regrow at vertex. Dutasteride slightly superior.
• Risks: Sexual dysfunction (2–4%), gynecomastia, depression (rare), PSA reduction (adjust monitoring). Contraindicated in pregnancy.

3. Hair Transplantation

• FUE (Follicular Unit Extraction): Individual grafts, no linear scar.
• FUT (Strip): Higher yield per session, linear scar.
• Outcome: Permanent, natural if artistic placement. Requires donor supply.

4. Low-Level Laser Therapy (LLLT)

• Devices: combs, caps, helmets (650–900 nm, 5 mW).
• Mechanism: photobiomodulation → ↑ mitochondrial ATP, ↓ inflammation, ↑ growth factors.
• Evidence: modest (RCTs show +10–15 hairs/cm²); best as adjunct.

5. Emerging/Adjunctive

• Oral minoxidil (0.25–5 mg) – growing off-label use.
• PRP (platelet-rich plasma) – variable protocols, modest data.
• Topical anti-androgens (clascoterone, breezula).

Decision Framework

Dermatologist evaluates pattern, severity, labs (iron, thyroid, hormones), goals → personalized algorithm. Combination therapy often superior to monotherapy.