Pumpkin seed oil for hair growth is searched about 14,800 times a month, and nearly all of it traces back to 1 trial. That trial had 76 men and lasted 24 weeks.
The result was real, and so were its limits. This page lays out both.
Quick Answer: Does Pumpkin Seed Oil Help Hair Loss?
One trial says it may, modestly. In 76 men with mild to moderate pattern hair loss, 400 mg of oil a day for 24 weeks raised hair count 40% against 10% on placebo. Hair thickness did not change, the capsule maker funded the study, and DHT was never measured. No oral trial has tested women or ground seed.
Key Takeaways
- The main oral trial gave 76 men 400 mg of oil daily.
- Hair count rose 40% on oil against 10% on placebo by 24 weeks.
- Hair thickness did not change in either group over 24 weeks.
- The capsule supplier funded the 2014 trial and held its randomisation codes.
- Free testosterone was unchanged, and DHT was never measured in 24 weeks.
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The One Oral Trial
Almost every claim about pumpkin seed oil and hair cites a single 2014 Korean trial. Its design was sound on paper.
- Who: 76 men aged 20 to 65 with mild to moderate pattern hair loss.
- Dose: 400 mg of oil a day, as 4 capsules of 100 mg.
- Design: Randomised, double-blind, placebo-controlled.
- Length: 24 weeks, with checks at 12 and 24 weeks.
The trial measured photographs, self-ratings, hair thickness and hair counts.[1]Effect of pumpkin seed oil on hair growth in men with androgenetic alopecia: a randomized, double-blind, placebo-controlled trial — Evidence-Based Complementary and Alternative Medicine (2014) View source How it sits within the wider evidence is in our pumpkin seed benefits guide.
What the Numbers Mean
The headline figure is a 40% rise in hair count. The underlying numbers give a more measured picture.
- Hair count: Up 6.2 hairs per field of view, against 1.8 on placebo.
- Hair thickness: No difference between groups.
- Investigator view: 17 of 37 men improved; 19 were unchanged.
- Self-ratings: No difference at 12 weeks; better on oil at 24 weeks.
In the placebo group, 11 of 39 men were rated worse at 24 weeks, against 1 of 37 on oil. Part of the benefit may be slowed loss rather than regrowth.
Oil Softgels Versus Our Ground-Seed Capsule
If you are weighing pumpkin seed for hair, the form matters. The trial used pressed oil, not seed.
- Trial product: 400 mg of pressed oil a day.
- Our capsule: 1 g of ground seed, holding roughly 0.2 to 0.5 g of fat.
- The gap: No trial tested ground seed for hair.
- The honest claim: None for hair, from us.
That is why the plain seed capsule we sell carries no hair claim, even though its fat content overlaps the trial dose by weight.
The Limits of That Trial
A single positive trial needs a careful read before it becomes a recommendation. This one has 5 limits worth knowing.
- Funding: The capsule supplier funded it and held the randomisation codes.
- Dropouts: 12 of 76 men left, 5 on oil and 7 on placebo.
- Mechanism: DHT was not measured, so the DHT-blocking story is untested.
- Frontal loss: A published comment notes frontal results were not reported.
- Replication: No second oral trial of oil alone has followed.
The authors also reported that free testosterone did not change in either group. A published comment asked for frontal data and a trial of at least 1 year.[2]Comment on the pumpkin seed oil hair growth trial in androgenetic alopecia — Evidence-Based Complementary and Alternative Medicine (2015) View source
Scalp Oil and Blends
The other studies either put the oil on the scalp or mixed pumpkin with other ingredients.
| Study | What was used | Who and how long | Result |
|---|---|---|---|
| Oral oil trial, 2014 | Oil capsules, 400 mg a day | 76 men, 24 weeks | Hair count up 40% vs 10% on placebo |
| Scalp oil trial, 2021 | Oil on the scalp vs minoxidil foam | 60 women, 3 months | Both improved; no placebo arm |
| 2025 blend trial | Cystine, saw palmetto, pumpkin, pygeum | 80 adults, 6 months | Density up; pumpkin not isolated |
The scalp trial compared oil with 5% minoxidil foam in 60 women for 3 months.[3]Pumpkin seed oil vs. minoxidil 5% topical foam for female pattern hair loss: a randomized comparative trial — Journal of Cosmetic Dermatology (2021) View source Both groups improved on dermoscopy, but there was no placebo arm.
The 2025 blend trial raised density by 12.3 hairs per square centimetre at 6 months.[4]Oral L-cystine, Serenoa repens, Cucurbita pepo and Pygeum africanum in telogen effluvium and androgenetic alopecia — Skin Appendage Disorders (2025) View source With 4 actives plus vitamins, pumpkin's share cannot be separated. None of these studies used ground seed, so how pumpkin seed oil differs from the ground seed matters before you buy.
What the Reviews Say
Two recent reviews include pumpkin seed oil. Both are cautiously positive, and both rest on the same small base.
- JAMA Dermatology, 2023: Listed pumpkin oil among supplements with potential benefit.
- Network analysis, 2025: 19 trials, 1,658 patients; oil improved density vs placebo.
- Both reviews: Called for larger, better trials.
- Our reading: Promising, not established.
The 2023 review covered 30 studies of nutritional interventions for hair loss.[5]Evaluation of the safety and effectiveness of nutritional supplements for treating hair loss: a systematic review — JAMA Dermatology (2023) View source The 2025 network analysis rated tolerability as good across supplements.[6]Effects of dietary supplements on androgenetic alopecia: a systematic review and network meta-analysis — Frontiers in Nutrition (2025) View source
Before You Try It
Pattern hair loss is common, but other causes can look like it. A short check first saves months of guessing.
- Get a diagnosis: Patchy or sudden loss has other causes.
- Know the approved options: Minoxidil and finasteride have FDA approval.
- Give it time: The trial judged results at 24 weeks.
- Take photos: Same light, same angle, every 8 weeks.
Mild abdominal discomfort was reported by 1 man on oil in the trial. The full safety picture is in pumpkin seed oil side effects.
See a Doctor or Dermatologist First If
- Hair is falling out in patches, or suddenly and in large amounts
- You also have scalp pain, redness or scaling
- You are a woman with thinning plus irregular periods or acne
- You are pregnant, breastfeeding, or under 18
- You have reacted to pumpkin seeds, sesame or tree nuts before
Frequently Asked Questions
Does pumpkin seed oil really help hair growth? +
One trial says modestly. In 76 men, 400 mg a day for 24 weeks raised hair count 40% against 10% on placebo.
How long does it take pumpkin seed oil to grow hair back? +
The trial measured at 12 and 24 weeks. Self-ratings differed only at 24 weeks, so allow about 6 months.
Is pumpkin seed oil a DHT blocker? +
That is untested in people. Rat studies point to 5-alpha-reductase, but the 76-man trial never measured DHT.
Which is better for hair loss, pumpkin seed oil or rosemary oil? +
0 trials compared them directly. Pumpkin seed oil's oral evidence is 1 trial in 76 men.
Which is better for hair loss, saw palmetto or pumpkin seed oil? +
No head-to-head trial exists. A 2025 network analysis of 19 trials included both, and neither is FDA-approved for hair loss.
Will pumpkin oil make my thinning hair thick again? +
Probably not thicker per strand. In the 24-week trial, hair count rose but hair thickness did not change.
Does pumpkin seed oil work for women's hair loss? +
The oral trial enrolled only men. A scalp-oil trial in 60 women improved dermoscopy markers, with no placebo group.
Do pumpkin seeds help hair growth if you eat them? +
No trial tested eating seeds for hair. A 28 g handful adds about 2.2 mg of zinc, 20% of the Daily Value.
Should I take pumpkin seed oil with food? +
In the trial, 2 capsules were taken 30 minutes before breakfast and 2 before dinner.
Does pumpkin seed oil affect testosterone? +
Not in the hair trial. Free testosterone was unchanged in both groups after 24 weeks at 400 mg a day.
Related Reading
- Pumpkin Seed for Prostate and BPH
- Pumpkin Seed, Urgency and Night-Time Trips
- Pumpkin Seeds as Food or Supplement
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