Platelet-rich plasma, or PRP, is one of the most widely advertised hair-loss treatments in Medellín clinics. It is also one of the hardest to plan from abroad, because it is not a one-time procedure: it works, when it works, through repeated sessions over months. This guide looks at PRP as a stand-alone treatment for thinning hair. It covers what the procedure involves, what major medical sources say it can and cannot do, why protocols differ so much between clinics, and how an international patient can decide whether a session in Medellín makes sense.
What PRP involves
The American Academy of Dermatology describes the process simply: blood is drawn from your arm, spun in a machine that separates the plasma from the red blood cells, and the plasma is injected into the scalp, which takes about ten minutes (American Academy of Dermatology). The idea is that concentrated platelets release substances that support struggling hair follicles.
A typical visit therefore has three parts: the blood draw, the preparation in a centrifuge, and a series of injections across the thinning area. Ask the clinic what it does to reduce discomfort during the injections, since the scalp is sensitive and many small injections are involved.
What it can and cannot do
According to the AAD, PRP can help lessen hair loss within a few months, and some patients see thickening or regrowth. The same page is clear that PRP is not a permanent solution and that maintenance treatments are needed to keep results (American Academy of Dermatology). It can be used alone or before a hair transplant.
Two limits follow from how PRP works. First, it acts on follicles that are still there. A scalp area that has been smooth and shiny for years has few follicles left to respond, and no injection will replace them; that is what a transplant does. Second, PRP is not a diagnosis. Thinning that looks like pattern hair loss can have other causes, especially in women, and those causes need to be identified first. If you are a woman with thinning hair, our guide to diagnosing hair loss in women before treatment explains why.
Why no two clinics seem to do it the same way
If you collect quotes from several Medellín clinics, you will notice differences in how many sessions they recommend, how often, and how they describe their preparation. That is not just marketing. PRP protocols are genuinely not standardized.
A 2025 systematic review and meta-analysis in Frontiers in Medicine (Ghanem et al., 2025) compared single-spin and double-spin preparation for androgenetic alopecia. It found only three eligible randomized trials, with 90 participants in total. Even within that small group, blood volumes ranged from about 4–5 mL to 13.5 mL, studies used different activators or none, centrifuge settings varied, and injection schedules differed from trial to trial. None of the differences between the two preparation methods was statistically significant, and the authors called for more direct comparisons.
For a patient, the practical lesson is to ask how a clinic prepares its PRP and why, rather than assuming every "PRP session" is the same product.
Questions about the preparation
- How much blood do you draw, and what system or kit do you use to prepare it?
- Do you spin once or twice, and do you add an activator?
- Who performs the injections: a physician, or another trained professional under supervision?
- What numbing or comfort measures do you use?
- How do you measure whether it is working for me: standardized photos, hair counts, or something else?
The scheduling problem for international patients
The AAD describes a common schedule: one session a month for the first three months, then one every three to six months after that (American Academy of Dermatology). That rhythm is easy for someone who lives near the clinic and awkward for someone who flies in from another country.
Here are the realistic options, with their trade-offs.
| Approach | How it works | Trade-offs |
|---|---|---|
| One session during a visit | A single treatment while you are in Medellín for other reasons | Simple, but one session on its own does not match the schedules major sources describe. Treat it as a trial, not a course. |
| Longer stay for the initial series | Remote workers or long-stay visitors complete the monthly sessions in Medellín | Closer to the usual schedule, but maintenance sessions still need a plan once you leave. |
| Start in Medellín, continue at home | Initial sessions in Medellín, maintenance with a provider near you | Practical, but protocols differ between clinics, so results may not be directly comparable. |
| PRP as part of a transplant trip | Sessions linked to surgery | A different question with its own considerations; see our guide to PRP with a hair transplant. |
| Skip PRP | Rely on medical treatment and, if suitable, surgery | Avoids repeated travel costs; discuss alternatives with a dermatologist. |
Whichever route you choose, take standardized photos before the first session and at each follow-up, in the same light and from the same angles, so you can judge the effect honestly rather than relying on memory.
How PRP fits with medical treatment
PRP is often discussed as an alternative to medication, but the AAD lists it alongside medical treatments rather than as a replacement. Its guidance on male pattern hair loss explains that minoxidil, applied twice a day, can take six to 12 months to show results and stops working if you stop using it, and that finasteride, a daily prescription pill, shows results in about six months and slows further hair loss in about 80% to 90% of men who take it (American Academy of Dermatology). The AAD also notes that people tend to get better results when treatment starts soon after hair loss is noticed.
These medicines have their own benefits, side effects and suitability questions, and they need a prescriber who knows your medical history. If you are weighing them alongside PRP or a transplant, our guide to finasteride and minoxidil around a transplant covers the planning side. The point here is simply that PRP is one tool, and a good consultation in Medellín should discuss it in the context of the others.
Questions to ask yourself first
- Has a doctor diagnosed the type of hair loss I have, or am I assuming it?
- Can I realistically return for repeat sessions, in Medellín or at home?
- Am I already using, or willing to discuss, other treatments a dermatologist might suggest?
- Do I have baseline photos so I can judge any change honestly?
- What would make me stop: no visible change after an agreed period, cost, or travel time?
Answering these before you book keeps the decision about your hair rather than about a package that happens to fit a holiday.
Choosing where to have it in Medellín
PRP involves a blood draw and scalp injections, so it is a medical procedure, even if it is sometimes sold alongside facials and spa services. Because PRP is sold in the same busy cosmetic marketplace as many elective treatments, check who is actually doing it; official U.S. advice on Colombia flags big differences between facilities and few legal remedies if care goes badly (U.S. State Department, 2025). Before booking, confirm:
- That the person evaluating your hair loss is a physician, and their name.
- That blood is drawn and handled in a clinical setting with single-use equipment.
- The price per session in writing, plus what is included, and any package terms if you will not be able to complete it.
- What follow-up the clinic offers once you have left Colombia.
- A written note of what was injected, when and by whom, in line with the CDC's general advice to keep records of any care received abroad (CDC Yellow Book, 2026).
Frequently asked questions
How many PRP sessions will I need?
There is no single standard. The American Academy of Dermatology describes monthly sessions for the first three months, then one every three to six months. Clinics vary, so ask for the proposed schedule and the reasoning in writing.
Can PRP regrow hair on completely bald areas?
PRP works on follicles that are still present. Areas that have been bald for a long time have few follicles left, so PRP is not a substitute for a transplant there.
Is one PRP session during a holiday in Medellín worth it?
Treat it as a trial rather than a treatment course, because a single session does not match the schedules major sources describe. If you want a full course, plan how the follow-up sessions will happen.
Can I use PRP together with minoxidil or finasteride?
PRP is often discussed alongside medical treatment rather than instead of it. Whether to combine them is a decision for a prescriber who knows your medical history.
Does PRP hurt?
It involves a blood draw and several injections into the scalp, which many people find uncomfortable. Ask the clinic what numbing or comfort measures it uses before you book.
Sources cited in this guide
- American Academy of Dermatology
- Frontiers in Medicine (Ghanem et al., 2025)
- U.S. State Department, 2025
- CDC Yellow Book, 2026
Educational information only, not medical advice. Re-check guidance and credentials before treatment.
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