You’re probably familiar with Minoxidil. For decades, it has been one of the most widely used treatments for hair loss in men. Procapil is newer and less known, but is gaining ground in hair care serums. Both are used for male pattern baldness, but they work in very different ways. What are the real differences?
What is Minoxidil and how does it work?
Minoxidil began its life as a blood pressure-lowering drug in pill form. In the 1980s, researchers discovered a striking side effect: hair growth. Since then, it has been applied to the scalp as a lotion or foam.
It acts as a vasodilator: it widens the blood vessels around the hair follicles. This provides the follicles with more oxygen and nutrients, and improves blood flow to the scalp. Minoxidil also extends the anagen phase (the active growth phase of hair) and shortens the telogen resting phase. The result: more hairs continue to grow actively for longer.
Minoxidil is the only topical hair growth product approved by the FDA for male pattern baldness. That sounds convincing, and for many men, the results are tangible. But there are a few things you should know before you start using it.
What is Procapil and how does it work?
Procapil is not a single ingredient, but a combination of three active substances: biotinyl-GHK (a peptide), oleanolic acid, and apigenin. These three tackle hair loss from different angles.
Biotinyl-GHK strengthens the hair root and improves the firmness of the follicle; the hair literally falls out less easily. Oleanolic acid inhibits the production of DHT, the hormone responsible for hereditary baldness in most men. Apigenin improves microcirculation on the scalp, making the follicles more accessible to nutrients.
In one formula, Procapil simultaneously addresses three known causes of male hair loss: hormonal factors (DHT), reduced blood circulation, and weak hair roots.
Side effects: an honest account
This is where Minoxidil surprises many users.
A common phenomenon in the first few weeks of use is shedding: temporary accelerated hair loss. Older, weaker hairs are replaced by newer hairs in the anagen phase. For most users, this lasts three to eight weeks. That sounds reassuring if you know it in advance, but many men stop precisely at this point because they think the product isn't working.
Furthermore, users of Minoxidil sometimes report itching, redness, or flaking on the scalp. In rare cases, heart palpitations occur, especially with higher concentrations. These are exceptions, but it's fair to mention them.
Procapil has a significantly friendlier side effect profile. Clinical studies show hardly any side effects. There is no known shedding period, and skin irritation is rarely reported. This makes it more accessible for men who are sensitive to skin reactions.
What does the research say?
For Minoxidil, the research base is extensive. It has existed for decades, there are large independent studies, and its efficacy is well-documented. It is effective in about a third of men who use it, with the best results in men under forty with more recent hair loss.
For Procapil, the study base is smaller but promising. In a placebo-controlled study, 85% of participants showed clinical improvement: an average of 9% more hairs in the anagen phase, 17% fewer telogen hairs, and an increase of about 10,000 new hairs. In studies, Procapil led to 58% less hair loss. In a comparative study, a combination with Procapil scored higher than 5% Minoxidil in photographic assessment (88.9% vs. 60%).
Caveat: most Procapil studies are small-scale and relatively short in duration. The results are positive, but larger independent trials are still lacking.
Stopping use: what happens?
This is a point that many men only discover afterwards with Minoxidil: if you stop using it, the results disappear. The hair that has grown back is dependent on the product. Within three to four months after stopping, it falls out again. For many users, this practically means a lifelong commitment.
For Procapil, this is less black and white. Because the ingredient works on the causes of hair loss, DHT inhibition, improved blood flow, stronger hair roots, the theory is that the effects can last longer. In practice, this varies per person.
Which ingredient is most suitable for whom?
Minoxidil works best for men who are relatively young (under forty), whose hair loss is not yet too advanced, and who are willing to continue using it consistently for a long time. The shedding period requires perseverance.
Procapil is suitable for men who want to intervene early, are sensitive to skin irritation, or are looking for an ingredient that tackles multiple causes of hair loss simultaneously without severe side effects.
The two do not necessarily exclude each other. Do you want to start with a serum that combines Procapil with other active ingredients such as Redensyl, Baicapil, and caffeine? Then the Hairborn Growth Serum is an option that brings together multiple mechanisms of action in one formula.