Finasteride for hair loss: an honest explanation
If you seriously delve into hair loss, sooner or later you will come across finasteride. It is the most commonly prescribed medication for male pattern baldness, and for many men, it makes a big difference. At the same time, there are questions attached to it that are not always answered honestly.
This article explains how finasteride works, what you can expect from it, and when it makes sense to consider it.
What exactly is finasteride?
Finasteride is a medication developed in the 1980s for benign prostatic hyperplasia. At a lower dosage, 1 mg per day instead of 5 mg, it also proved effective for male pattern baldness. In the Netherlands, finasteride 1 mg is available by prescription, under names like Propecia or as a generic drug.
It falls into the category of 5-alpha-reductase inhibitors: medications that block a specific enzyme in your body. That sounds technical, but the mechanism is quite clear if you know how male hair loss works.
How does it work for hair loss?
Most male hair loss, the hereditary variant, is related to DHT. This is a hormone produced from testosterone, via the enzyme 5-alpha-reductase. In men who are genetically predisposed to baldness, DHT damages hair follicles over the years: they slowly shrink, produce increasingly thinner hair, and eventually stop.
Finasteride inhibits this enzyme. This reduces the DHT level in the blood by about 60 to 70 percent. Less DHT means less damage to the follicles, and for many men: less hair loss and in some cases partial regrowth.
So it does not act directly on the hair itself, but on the hormonal process underlying it.
What can you expect?
Finasteride is not a miracle cure, but it is one of the most researched options available.
Clinical research over several years shows that in about 80 to 90 percent of men, hair loss stops or slows down significantly. In 60 to 65 percent, there is also some regrowth, especially at the crown. The effect only appears after 3 to 6 months, sometimes only after a year.
What many people don't realize: if you stop finasteride, hair loss will continue. It slows down the process, but does not solve the underlying cause. Those who want to maintain the results are committed to it long-term. In practice, this means years, if not the rest of your life.
That is no reason not to consider it, but it is something to think about carefully beforehand.
The side effects everyone is talking about
This is where most of the doubt lies, and rightly so. Finasteride has caused sexual side effects in some users: decreased libido, erectile dysfunction, or changes in ejaculation. In large clinical studies, this affects 1 to 3 percent of users. That is a relatively small percentage, but it is also not zero.
For most men, these symptoms disappear when they stop the medication. However, there have been documented cases where the symptoms persisted after discontinuation. This is known in medical literature as Post-Finasteride Syndrome, or PFS. It is rare, but it exists and has been described in peer-reviewed research.
Less discussed side effects include mild depression, fatigue, or mood swings. These are also reported, although the distinction from placebo in studies is not always clear.
What this practically means: finasteride is well tolerated by the vast majority of users, but it is a medication with real side effects in some people. That deserves an honest assessment.
Who is finasteride suitable for?
Finasteride works best for men who still have active hair follicles. This means: with early to moderate hair loss, where you see thinning hair at the hairline or crown but the follicles are not yet completely inactive.
In the case of completely bald spots that have existed for years, the follicles are probably too far gone to respond to a reduction in DHT. In that case, finasteride is of little use.
Furthermore: finasteride is not suitable for women (especially not during childbearing age due to risks to the fetus), and you need a prescription for it in the Netherlands. This can be obtained through your GP, a dermatologist, or through online healthcare platforms that offer it.
What if you don't want to use finasteride?
That is a very understandable choice. Not everyone wants to use a hormone-blocking medication, especially if you feel uncertain about the possible effects.
There are alternatives that are also effective, without interfering with your hormone balance. There are topical ingredients like Redensyl, Procapil, and Baicapil that demonstrably work at the follicle level, without systemic effects.
For men in the early stages of hair loss, where the follicles are still active but weakening, a combination of a good hair serum and a derma roller can already make a noticeable difference. It is not an alternative if hair loss is already advanced, but as a supplement or as a first step, it is certainly worth considering.
The Hairborn Growth Serum combines several of these active ingredients in one formula, specifically developed for men with early hair loss. If you are looking for a non-hormonal approach, that is a logical place to start.
Summary
Finasteride works, that is scientifically well-substantiated. It stops or slows down hair loss in most men who use it, and in some, there is also regrowth. At the same time, it is a medication that you use long-term, that affects your hormone balance, and that causes side effects in some users that should be taken seriously.
Whether it is right for you depends on how far your hair loss has progressed, how you feel about medication, and whether you want to make that decision consciously and well-informed. That is a personal choice, and no doctor or blog can make it for you.