You searched for “male pattern baldness treatment” for one of two reasons. Either it is for your husband, your son in his twenties, your brother, the one who complains about his hairline in the mirror and will never book an appointment with anyone. Or it is for you, because you looked at your own parting, the one that keeps getting wider, and recognised something close to what the articles describe about men.
Either way, the short answer is yes, it is treatable. And on its own that answer is close to useless, because the question that decides the outcome is a different one: treatment from whom, started when.
What is actually happening inside the follicle
Pattern baldness, properly called androgenetic alopecia, is not hair falling out faster than it should. It is the follicle shrinking.
Testosterone is converted into dihydrotestosterone (DHT) by an enzyme called 5-alpha-reductase. In follicles that are genetically sensitive to that hormone, each growth cycle comes out a little shorter than the one before. The follicle still produces a hair, but a thinner, shorter, less pigmented one. Repeat that for years and you get an area that still has follicles, only now they are producing fuzz instead of hair.
Two practical consequences follow from that.
First: the sensitivity belongs to the region, not to the person. That is why the pattern is so predictable. In men it recedes at the front and opens up at the crown, while the nape and the sides stay intact for life. In women the parting widens and density drops across the top, with the frontal hairline usually preserved.
Second: there is a window. A miniaturised follicle is still alive and still responds to stimulation. A follicle that has already scarred over does not. No medication, no protocol and no shampoo grows hair where there is no longer a follicle. What separates a case that responds from a case that does not is rarely the treatment chosen. It is the time that passed before starting.
The belief that costs the most
The most repeated line on this subject is “it is genetic, nothing can be done”. It confuses two different things: the cause and the course.
The cause is genetic and hormonal, and that does not change. The course is what changes. Inhibiting the enzyme that produces DHT does not erase the predisposition, but it slows the process down for as long as the medication is used. Saying “it is genetic, so it is a lost cause” is like saying inherited high blood pressure cannot be controlled.
The mirror image of that belief is just as common and just as wrong: the idea that because it is treatable, any treatment will do. Pharmacy tonic, imported ampoules, a home laser cap, a salon protocol with an English name on the label. None of those act on the hormonal conversion that is driving the miniaturisation. Some of them make the hair you still have look better, which is not nothing at all, it is just not the same thing.
What each option actually does
| Option | What it acts on | Who prescribes it | What happens if you stop |
|---|---|---|---|
| Oral finasteride | Inhibits 5-alpha-reductase and cuts blood DHT by around 70% | A doctor, by prescription | Progression picks up where it left off |
| Topical minoxidil | Extends the growth phase of the hair; does not touch the hormone | Over the counter, medical guidance recommended | Within a few months the hair gained is lost |
| Low-dose oral minoxidil | Same effect, systemically | A doctor, by prescription and with follow-up | The same |
| Transplant | Relocates follicles from the nape, which are not DHT-sensitive | A surgeon | The native hair around the graft keeps thinning |
| Hair therapy at the salon | Scalp condition, flaking, oiliness, fibre integrity, measurement over time | A hair therapy professional | The scalp deteriorates again; the baldness carries on as it would have |
Three readings of that table are worth spelling out.
Treatment is ongoing. There is no six-month course that settles the matter. This is long-term medication, like any treatment for a chronic condition, and people who do not accept that part tend to stop in month eight and conclude that it did not work.
The response takes four to six months to become visible, because it depends on the follicle completing a fresh cycle. Judging it before then is judging nothing. Worse: early on there can be a temporary increase in shedding, as old hairs are pushed out to make room for new ones, and that is exactly the point at which a lot of people give up.
A transplant does not stop the condition. Transplanting without ongoing medical treatment is like rearranging the furniture in a room that is still flooding: a few years later a new gap appears behind the grafted line.
The side effects a doctor has to weigh, and a salon cannot
Finasteride has documented adverse effects, including changes in libido and sexual function in a minority of users, and reports of mood changes. That is label information, not forum rumour, and in most cases it reverses when the medication is stopped.
There is one detail almost nobody mentions, and it matters from the age of 40 onwards: the medication halves the prostate-specific antigen (PSA) value, the test used in prostate screening. Anyone taking finasteride who has that test done needs their urologist to know, or the result will be read as better than it is.
That is the central point of this article. There is no version of cosmetic hair therapy that can make that judgement call. Weighing up the risk of a medication is the job of whoever can prescribe it and answer for it.
If the case is yours, not his
In women the pattern does exist, but the investigation is wider before anyone reaches a conclusion. Thinning across the top with a widening parting can be the genetic pattern, and it can be something else entirely: low iron, a thyroid problem, excess circulating male hormone, the months after giving birth, menopause, the effect of a medication. Several of those often overlap.
That is why the approach is not the same. Finasteride is not the standard first line for women, and the path starts with blood work and a medical assessment. It is worth asking for ferritin, a full blood count, thyroid-stimulating hormone (TSH) and vitamin D before making any decision.
See a doctor first, without any other step in between, if there is a patch with a sharp border that appeared quickly, persistent redness, a sore, crusting or pain, scalp that is smooth and shiny where there used to be hair, loss of eyebrows or lashes alongside it, or shedding that comes with weight change, unusual fatigue or a change in your cycle. None of that is the genetic pattern, and none of it gets resolved in a salon chair.
Where hair therapy fits in without pretending to be something else
Three jobs, all of them useful, and none of them is treating the cause.
Measuring. Trichoscopy records the calibre of the hairs you have today, area by area, and shows the variation in thickness between neighbouring hairs (anisotrichosis), which is the characteristic finding of the androgenetic pattern. That variation is what makes it possible to say, months later, whether anything has changed, instead of relying on the impression of someone who looks in the mirror every day and can never tell.
Looking after the scalp. Seborrhoeic dermatitis, flaking, oiliness and inflammation do not cause baldness, but they get in the way of using a topical product and of tolerating treatment. An irritated scalp is a frequent reason people abandon minoxidil.
Supporting adherence. Treatment fails more often through interruption than through ineffectiveness, and having an objective measurement every few months helps you get through the stretch where there is still nothing to see.
If you would like to talk about your case
The trichoscope hair assessment shows the scalp magnified up to 200 times, with the screen turned towards you, so you follow the images along with the professional. It records the calibre and distribution of the hairs you have today, describes the condition of the scalp, and says when the case belongs with a dermatologist. That is one of the expected outcomes of the assessment, not a failure of it.
R$200 (Brazilian reais), credited in full towards the protocol. We measure again during or at the last session and compare with the image from the first day, at no extra cost. We are in Tatuapé, in the East Zone of São Paulo, close to the Carrão and Tatuapé metro stations, open Tuesday to Saturday from 9am to 6pm, by appointment. Tuesday is the day reserved for scalp therapy. We also offer service in English.