Men's Hair Loss: Finasteride, Minoxidil and Laser Caps, by the Evidence

Finasteride and minoxidil are the two FDA-approved drugs for male pattern hair loss, with the largest and longest trials. Laser caps and combs are FDA-cleared devices that beat sham devices in smaller trials. Supplements trail well behind.

By Kymata Health Editorial Last checked Men's health

Key takeaways

4 points
  • At 5 years, 35% of men on finasteride 1 mg had lost hair from baseline vs all of the small placebo group1.
  • Topical 5% minoxidil beat 2% and placebo in a 48-week trial of 393 men2.
  • Laser devices raised hair counts vs sham in trials of 16 to 26 weeks45; they are FDA-cleared, not approved6.
  • Compounded topical finasteride is not FDA-approved, and FDA has adverse-event reports for it3.

Guides in this hub

5 guides
  1. Laser Caps for Men's Hair Loss: What the Trials Show and What FDA Clearance MeansLow-level laser caps and combs beat sham devices in small randomized trials in men. They are FDA-cleared, not FDA-approved, which means they were judged equivalent to devices already on the market. Finasteride and minoxidil have larger, longer trials behind them.
  2. Finasteride for Men's Hair Loss: What 5 Years of Trials Show and the Side Effects on the FDA LabelFinasteride 1 mg slowed hair loss and regrew hair in placebo-controlled trials lasting up to 5 years. Sexual side effects were uncommon in those trials, but the FDA label now lists persistent sexual problems, depression and suicidal thoughts from post-marketing reports.
  3. Minoxidil for Men: Topical Foam or Solution vs Low-Dose Pills, by the Trials and the LabelsTopical 5% minoxidil is FDA-approved over the counter for men and beat 2% and placebo in a 48-week trial. Low-dose oral minoxidil is popular but off-label: the tablets are approved only for severe high blood pressure.
  4. Dutasteride vs Finasteride for Men's Hair Loss: What the Head-to-Head Trials Show, and the Safety Trade-OffsIn 24-week head-to-head trials, dutasteride 0.5 mg grew more hair than finasteride 1 mg. But dutasteride is approved in the US only for an enlarged prostate, stays in the body for months, and carries the same class warnings, so the extra hair comes with real trade-offs.
  5. Rosemary Oil vs Minoxidil for Men's Hair Loss: What One Small Trial Shows and What It Doesn'tThe claim that rosemary oil works as well as minoxidil rests on a single 100-person trial against the weaker 2% strength, with no placebo group. Minoxidil 5% has larger trials and an FDA-approved label. Here is what each can and cannot promise.

Researched and written by Kymata Health Editorial; sources cited inline. Drawn from the studies and documents cited below. Educational only, not medical advice.

Where to start

For common male pattern hair loss, the drugs with the strongest evidence are finasteride 1 mg and topical minoxidil. In finasteride's trials, placebo users kept losing hair while most treated men held or regained hair over 5 years1; our finasteride guide covers results and the label's side-effect warnings.

Topical 5% minoxidil is sold over the counter; our minoxidil guide compares it with off-label low-dose pills2.

Proven combinations

The two approved drugs work differently, so they are often used together: finasteride lowers DHT1, and topical minoxidil regrows hair on the top of the scalp2. In a meta-analysis of 5 randomized trials, finasteride plus topical minoxidil gave better photographic scores and more men with marked improvement than either alone, with similar side effects8. See finasteride and minoxidil together, and the full finasteride and minoxidil pages.

Compounded finasteride-minoxidil sprays sold online are not FDA-approved3, and minoxidil tablets, used in some combination pills, are approved only for severe high blood pressure7.

Laser caps and combs

Low-level laser devices beat sham devices in small trials in men45; both trials were funded at least in part by the device makers45. They are cleared through FDA's 510(k) pathway, which finds a device substantially equivalent to one already on the market6. Our laser cap guide explains the trials and what clearance does and does not mean. For the devices themselves, our laser cap and red light hat review compares every cap we link to, with each FDA record checked.

Supplements

Supplement evidence for male pattern hair loss is thin; our review of pumpkin seed oil and saw palmetto covers the small trials. If you take creatine, see what the creatine and DHT study found. None has the trial record of the approved drugs12.

Find the evidence

Ask our graded human trials about a goal, a grade, a trial size, two supplements or a medicine. Answers are assembled on your device from the rows.

Evidence finder

3,342 trial rows · 869 interaction rows

14 graded trial rows on hair loss, across 10 supplements. Best grade among rows showing a benefit: C.

Verdicts: 14 improved.

Grades of the 14 rows: C 4D 10

Strongest row showing a benefit, per supplement

  1. Purple nutsedge (Cyperus rotundus)Grade C

    Pain and redness after laser hair removal

    Improved · 153 people · RCT · 2022 · 1 more matching row

  2. Rosemary OilGrade C

    Hair count in pattern hair loss (androgenetic alopecia)

    Improved · 100 people · RCT · 2015 · 1 more matching row

  3. Pumpkin seed oilGrade C

    Hair count in male pattern hair loss

    Improved · 76 people · RCT · 2014

Assembled from 14 graded trial rows when this page was built.

Fixed sentence templates filled from our rows; every line links to its row. Not medical advice.

Where to buy

Our partners

  • Kiierr: Laser caps (148 and 272 diodes) cleared by the FDA in 2018 to promote hair growth in men with Norwood-Hamilton IIa-V and women with Ludwig-Savin I-II pattern hair loss, in skin types I-IV. Clearance is not a head-to-head comparison with finasteride or minoxidil.

    See Kiierr laser caps (paid link, opens in new tab)

  • Happy Head: An online hair-loss clinic for men and women. A dermatologist reviews your online consultation and decides whether to prescribe; options include standalone oral finasteride and minoxidil, and custom topicals and capsules that combine them. Its custom formulas are compounded, so they are not FDA-approved, and the FDA has warned about compounded topical finasteride. Happy Head lists custom formulas at $59 to $119 a month (checked Oct 17, 2026).

    Start a Happy Head consultation (paid link, opens in new tab)

  • MangoRx: An online men's health clinic. Its Grow chewable combines oral minoxidil 2.5 mg and finasteride 1 mg with biotin and vitamin D3, prescribed after an online consultation. It is compounded, so it is not FDA-approved, and oral minoxidil for hair loss is off-label. MangoRx lists Grow starting at $90 a month.

    Read our review

Regulatory and legal notes

  • There is no FDA-approved topical finasteride; FDA warned in April 2025 about adverse events with compounded topical finasteride, including effects that persisted after stopping3.
  • The Propecia label lists post-marketing reports of persistent sexual dysfunction, depression and suicidal ideation, and finasteride is contraindicated in pregnancy1.
  • Minoxidil tablets are approved only for severe hypertension and carry a boxed warning about pericardial effusion; using them for hair growth is off-label7.
  • Laser caps are FDA-cleared via 510(k), meaning substantially equivalent to a predicate device, not FDA-approved6.

References

Every study and document cited on this page, numbered as in the text.

Sources

8 sources
  1. 1PROPECIA (finasteride) tablets: prescribing information (revised 07/2022). U.S. Food and Drug Administration, 2022.
  2. 2A randomized clinical trial of 5% topical minoxidil versus 2% topical minoxidil and placebo in the treatment of androgenetic alopecia in men. J Am Acad Dermatol, 2002. PMID 12196747
  3. 3FDA alerts health care providers, compounders and consumers of potential risks associated with compounded topical finasteride products. U.S. Food and Drug Administration, 2025.
  4. 4The growth of human scalp hair mediated by visible red light laser and LED sources in males. Lasers Surg Med, 2013. PMID 24078483
  5. 5Efficacy and safety of a low-level laser device in the treatment of male and female pattern hair loss: a multicenter, randomized, sham device-controlled, double-blind study. Am J Clin Dermatol, 2014. PMID 24474647
  6. 6Premarket Notification 510(k). U.S. Food and Drug Administration, 2024.
  7. 7LONITEN (minoxidil tablets): prescribing information. U.S. Food and Drug Administration, 2015.
  8. 8The Efficacy and Safety of Finasteride Combined with Topical Minoxidil for Androgenetic Alopecia: A Systematic Review and Meta-analysis. Aesthetic Plast Surg, 2020. PMID 32166351

Dietary supplements are not intended to diagnose, treat, cure or prevent any disease, and these statements have not been evaluated by the FDA. Prescription options need a licensed clinician. Talk to your clinician or pharmacist before starting anything new, especially if you take prescription medicines, are pregnant or breastfeeding.

Educational only. Not medical advice. Some links earn us a commission: kymatahealth.com/affiliate-disclosure.