Last updated on 1 November 2026
Pumpkin seed oil is not a proven alternative to finasteride. One placebo-controlled study from 2014 with 76 men found on average 40 percent more hairs after 24 weeks of 400 mg per day, versus 10 percent with placebo. There is no large follow-up study, so see it as a promising indication, not as a proven fact.
You've surely come across it on TikTok or a forum: pumpkin seed oil as a natural alternative to finasteride. No prescription pills, just an oil supplement from the drugstore or webshop. That sounds attractive if you prefer not to take medication. But is there really any evidence for it, or is this trend growing faster than the research behind it?
What exactly is pumpkin seed oil?
Pumpkin seed oil is pressed from pumpkin seeds and contains zinc, omega fatty acids, vitamin E, and phytosterols, among other things. The latter substance receives the most attention in hair loss research. Phytosterols are plant-based substances that are structurally similar to cholesterol and may influence the body's hormone balance.
This refers to the oil in capsule form, not eating pumpkin seeds themselves. No effect on hair growth has ever been demonstrated from a handful of seeds at lunch.
How might pumpkin seed oil work against hair loss?
Possibly by inhibiting the enzyme 5-alpha-reductase, but this has not been well demonstrated. In hereditary hair loss (androgenetic alopecia), the hormone DHT (dihydrotestosterone) plays a leading role. DHT is created when the enzyme 5-alpha-reductase converts testosterone. In men with sensitive hair follicles, DHT causes the hair growth cycle to become increasingly shorter until the follicle eventually stops active growth. Finasteride works by inhibiting this enzyme.
The authors of the study suggest as a possible explanation that pumpkin seed oil inhibits that same enzyme, although this is much less well supported than with finasteride. So the idea isn't entirely baseless, but the comparison to an approved medication goes too far.
What does the study actually say?
There is one study that almost every article about pumpkin seed oil refers to: a placebo-controlled study from 2014, published in the journal Evidence-Based Complementary and Alternative Medicine. It involved 76 men with mild to moderate hereditary hair loss. Half received 400 mg of pumpkin seed oil daily for 24 weeks, the other half a placebo.
After 24 weeks, the group taking pumpkin seed oil had on average 40 percent more hairs than at the start. In the placebo group it was about 10 percent, so that group also saw an increase. That result sounds impressive, and that is precisely why it is cited everywhere, from health blogs to advertisements for hair growth supplements.
But there are a few things you need to know. It concerns one study, with a relatively small group of 76 men, conducted by one research team. In a response to the study, other researchers point to open questions. There is no large follow-up study confirming the result. Also, in that study pumpkin seed oil was not compared with minoxidil or finasteride, so we don't know how it compares to treatments whose effectiveness has already been much better demonstrated. For minoxidil and finasteride, we are talking about dozens of studies with thousands of participants, over a much longer period.
This is what the comparison looks like:
| Pumpkin seed oil | Finasteride | Minoxidil | |
|---|---|---|---|
| Type of treatment | Supplement | Prescription medication | Medication |
| Research on hair loss | One study with 76 men | Dozens of studies | Dozens of studies |
| Mechanism | Possible inhibition of 5-alpha-reductase, not well demonstrated | Inhibits 5-alpha-reductase | Locally on the scalp |
That makes it a promising first indication, not a proven fact.
What can't pumpkin seed oil do?
Pumpkin seed oil is not going to restore your hairline if it has been receding for years. The study was about men with mild to moderate hair loss, not advanced baldness. Don't expect results within a few weeks either. The study only showed a difference after 24 weeks, which fits how a hair growth cycle works: it takes several months anyway.
It is also no replacement for a dermatologist if you are losing hair quickly and significantly, or if you doubt whether there is another cause behind it, such as a thyroid problem or an iron deficiency.
How do you use pumpkin seed oil if you want to try it?
Take it as a capsule, at the dosage used in the study: 400 mg per day. So it is a supplement that you take, not something you apply to your scalp. There are also topical products with pumpkin seed oil, but even less research has been done on those than on the oral form.
Always discuss the use of a supplement with your GP or dermatologist, especially if you are already using other treatments or taking medication.
Is pumpkin seed oil safe?
Pumpkin seed oil comes from a food source, so most people tolerate it well. No serious side effects were reported in the 2014 study. Some people experience mild stomach upset if they take it on an empty stomach. It is therefore better to take it with a meal.
If you are allergic to pumpkin or related plants such as cucumber and melon, caution is advised. And although there are no known direct interactions with finasteride or minoxidil, consulting a doctor is sensible if you are already using those treatments. It may sound harmless to combine two agents that both tinker with the same enzyme, but that combination has never been specifically studied.
Feel free to compare it with saw palmetto, another widely mentioned natural remedy with a similar story: a plausible mechanism of action, a limited number of studies, and results that are encouraging but not convincing.
Does pumpkin seed oil fit alongside a serum routine?
Yes, they work in different ways. Pumpkin seed oil works, if it works at all, from the inside via your hormone balance. A topical product such as the Hairborn Growth Serum intervenes in a different way: it nourishes the scalp and supports the hair follicle directly at the spot where your hair grows.
The serum works with the BornActive™ formula: twelve ingredients, including Capilia Longa™, Hairborn Complex™, and Procapil™. And if it doesn't work for you, the 150 Days Growth or Money Back Guarantee simply gets you your money back.
If you are consciously looking for an approach without medication, you could consider a supplement such as pumpkin seed oil as an addition alongside a routine you already use. Think of it as something to experiment with, not as the core of your approach.
If you want to further strengthen the topical side of your routine, a derma roller can help. By lightly stimulating the scalp, the serum can be better absorbed. That is not a miracle solution either, but it does have a clearer evidence base than most individual supplements.
Conclusion
Pumpkin seed oil is not a miracle solution, nor is it a proven alternative to finasteride, but it is also not just nonsense. There is one well-conducted study with a positive result, and the mechanism of action can be scientifically explained. At the same time, the evidence is thin compared with treatments that have been studied for decades. If you want to try it alongside your existing routine, that is a reasonable choice. Just don't expect it to bring back your hairline.
Frequently asked questions
Can you combine pumpkin seed oil with saw palmetto?
There is no specific research into this combination, and since both are said to have a similar mechanism of action, consulting a doctor before using them together is wise.
Is there a difference between cold-pressed and regular pumpkin seed oil?
There is no research that specifically compares cold-pressed and regular pumpkin seed oil for effectiveness against hair loss; the study used standardized capsules, not a specific pressing method.
Can you get enough pumpkin seed oil through your diet?
No, it is difficult to get the amount of phytosterols used in the study through diet alone; the study worked with a standardized dosage of 400 mg per day in capsule form.
Is there research on pumpkin seed oil in women with hair loss?
No, the well-known study on pumpkin seed oil and hair loss was conducted in men; no comparable research specifically in women has been published.
Can you take too much pumpkin seed oil?
Excessive intake could potentially worsen stomach complaints, but there are no known serious side effects at normal dosages. Stick to the recommended amount on the packaging.
Does pumpkin seed oil affect your blood values?
There is no specific evidence that pumpkin seed oil measurably affects standard blood values such as cholesterol or hormone levels at a normal dosage, although this has not been extensively studied over the long term.
Can you combine pumpkin seed oil with a derma roller?
Yes, you can. Pumpkin seed oil works orally and systemically, while a derma roller works locally and mechanically on the scalp, so there is no known interaction between the two.
Does pumpkin seed oil thin the blood?
There is no good evidence for that. In the hair study, the researchers reported no difference in side effects between the groups, but blood thinning was not studied separately. If you use blood thinners, ask your GP or pharmacist first.
Can you take pumpkin seed oil on an empty stomach?
It is better to take it with a meal. Oil on an empty stomach causes stomach complaints in some people. Also read the instructions on the packaging of your supplement, because the advice differs per product.
Is the supplement the same as pumpkin seed oil for culinary use?
No, the supplement in capsule form is standardized to a specific concentration of active substances, while pumpkin seed oil for culinary use is not standardized and therefore contains a different, less predictable amount of active substances.
