In short
Hair mesotherapy means small injections of a preparation into the scalp. Some studies in pattern hair loss show positive results, but they are small, use different substances and lack a common protocol. It can be an add-on to medical treatment after a diagnosis, not a stand-alone solution.
Key points
- A review of 12 studies (527 people) found improvement, but samples were small.
- Six very different groups of substances have been studied under the name mesotherapy.
- A 2026 review of 30 studies calls for standardised trials before routine use.
- Cases of hair loss and scarring at injection sites have been reported.
Hair mesotherapy is often sold as the way to stop hair loss. The reality is more nuanced: it may help some people, but the evidence is limited and the word covers very different treatments. Here is what is worth knowing before you book, whether you live on the Costa del Sol or are visiting for the season.
What hair mesotherapy is
Mesotherapy means fine, superficial injections into the skin of the scalp. The aim is to deliver a small amount of a preparation right where the follicle sits, instead of applying it as a lotion or taking it by mouth.
The catch is that "mesotherapy" describes how something is delivered, not what is delivered. A 2023 systematic review found studies using six quite different groups of substances: prescription drugs, growth factors, preparations made from the patient's own tissue, neuromodulators, stem cells and vitamin blends [2].
So asking whether "mesotherapy works" is a bit like asking whether "tablets work". It depends on what is in it, which type of hair loss it is used for and how often it is given.
Who it may suit
Almost all the research has been done in androgenetic alopecia, or pattern hair loss. It is the most common cause of hair loss in both men and women [1].
Mesotherapy may be worth considering when:
- Your diagnosis confirms early or moderate pattern hair loss, with follicles that are still responsive.
- You are already on the core medical treatment, or there are reasons not to use it and you accept an option with weaker evidence.
- You can come to the clinic as often as the plan requires.
It is not the right first step for sudden shedding, round bald patches or hair loss with itching, pain or scarring. Those need a diagnosis before any procedure, as we explain in our guide to how hair loss is diagnosed.
What the evidence shows
Hair mesotherapy has studies in its favour, but none large or consistent enough to make it a standard treatment.
- Positive results, small samples. A review of 12 studies with 527 participants found improvement in all of them, without significant side effects. The authors warn that samples are small and comparisons with other treatments are lacking [3].
- No standard protocol. The 2023 review found statistically significant improvement in several studies, but no standardised regimen [2].
- Not ready for routine use. A 2026 systematic review of 30 studies concluded that it may offer a cosmetic benefit, but called for standardised randomised trials before it can be recommended routinely [4].
- Expert consensus is cautious. The 2025 Canadian consensus recommends PRP and microneedling. Of the injectable formulas containing a drug, one reached only partial agreement and another was not recommended [6].
The foundation of treatment for pattern hair loss is still the medical treatment set out in European guidelines [1]. If mesotherapy is used, it is added to that foundation, not used instead of it.
Mesotherapy, PRP and microneedling
They are easily confused, because all three are applied to the scalp:
- Mesotherapy: injects a preparation made outside your body. Its composition varies widely between clinics.
- PRP: injects a platelet concentrate from your own blood. Its evidence is somewhat stronger; we summarise it in our guide to PRP for hair loss.
- Microneedling: creates controlled micro-punctures with a roller or pen device. A review of 22 studies with 1,127 people found improvement when it is used alongside another treatment, although the data are of low quality [7].
Microneedling is usually well tolerated. The side effects most often reported are redness, pain, swelling and short-lived irritation [8].
What a session involves
- A scalp check and follow-up photographs.
- Cleansing and disinfection of the area.
- Fine, superficial injections across the areas identified at diagnosis.
- Written aftercare instructions.
A session is short and you do not need time off work. The number of sessions and the interval between them are set by the doctor, depending on the preparation and your case. There is no single figure for everyone, because studies do not share a common protocol [2].
What to expect, realistically
A reasonable aim is to slow shedding and improve density or hair thickness a little. Studies report outcomes ranging from more density and thicker hair to simply less shedding [4].
Hair grows slowly, so change is judged over cycles of several months. To make the comparison fair, photographs are taken the same way every time.
If the underlying treatment is stopped, pattern hair loss carries on. That is why mesotherapy belongs inside a plan, never as a stand-alone fix.
Five questions to ask before you agree to a plan
Because the name covers such different treatments, it pays to ask before you start. A serious clinic will answer plainly:
- What is my diagnosis, and who made it? Without a medical diagnosis, any regimen is guesswork.
- What exactly is in the preparation, and why that one?
- How many sessions, how often, and when will we review whether it is working?
- How will the result be measured? The sensible answer is standardised photographs at the start and at every review.
- What should I do if I have a side effect, and who will see me?
Be wary of prepaid packages of many sessions before anyone knows how you respond, and of any promised result. Pattern hair loss is a long-term condition, and the honest goal is control, not cure.
Risks, and who should avoid it
Common side effects are mild: discomfort during the injections, redness, small bruises and a tender scalp.
There are also less common complications you should know about:
- The 2026 review reported, alongside mild effects, cases of paradoxical hair loss, scarring and acute dermatitis [4].
- Cases of scarring hair loss at injection sites have been published, appearing up to a year after uneventful sessions [5].
So it matters who recommends it, what is injected and how it is monitored. It needs careful assessment, or is best avoided, if you have:
- An infection, active psoriasis or another condition affecting the scalp.
- A bleeding disorder or anticoagulant treatment.
- A known allergy to any component of the preparation.
- Pregnancy or breastfeeding.
- A history of abnormal scarring or keloids.
How it works with us in Spain
Every plan starts with a medical consultation. Hair loss can be diagnosed by video consultation from anywhere in Spain, in English, with guided photos and a blood test at a nearby laboratory if needed.
If you have pattern hair loss, the foundation is medical treatment for hair loss, with an electronic prescription when appropriate. Mesotherapy is suggested only if it adds something in your case, and we explain beforehand what it contains and why.
Sessions take place at our clinic in Fuengirola, on the Costa del Sol, a registered healthcare centre (NICA 62866). Reviews can be in person or online, always with comparable photographs, and we can provide a written summary in English for your doctor at home.
What the evidence says
Each statement shows its level of evidence and the sources behind it.
Supported
- Medical treatment for pattern hair loss is the foundation set out in the European guideline.[1]High-quality evidence
With caveats
When to see a doctor
Book a medical consultation, or go to A&E if it is severe or sudden, if you notice:
- Sudden, heavy shedding, hair coming out in clumps or round bald patches.
- Severe itching, pain, scaling or persistent redness of the scalp.
- Shiny, hairless or scarred patches, especially if they appear after injections.
- Fever, pus or a painful lump in the days after a session.
Frequently asked
Does hair mesotherapy hurt?
You feel a brief sting at each point. Most people find it very manageable, and cooling can be used to ease discomfort. The front of the scalp is usually the most sensitive.
Can I carry on as normal afterwards?
Yes. Your scalp may feel tender or show a few red marks for some hours. It is sensible to skip hard exercise and swimming that day.
When can I wash or colour my hair?
You will get written instructions after each session. In general, you wait a few hours to wash your hair and keep colouring a few days away from a session so the skin is not irritated.
Can I combine it with medical treatment online?
Yes. That is the usual approach: medical treatment tackles the cause and mesotherapy is added if your doctor thinks it will help.
Can I have it in summer or before travelling?
Yes, with a little planning. Avoid direct sun and sea or pool water for the first few hours, and do not book a session right before a long flight or a beach holiday.
What happens if I stop?
Pattern hair loss continues over time. Your doctor will review with you whether to keep mesotherapy going, space it out or stop it, based on your photographs.
Does it help with shedding after stress or childbirth?
That type of shedding, telogen effluvium, usually settles once the cause is corrected. The priority is confirming the diagnosis and checking for deficiencies; mesotherapy is rarely needed.
References
Sources checked against PubMed or Crossref. Cited as plain text, without links.
- 1.Kanti V, Messenger A, Dobos G, Reygagne P, Finner A, Blumeyer A, et al. Evidence-based (S3) guideline for the treatment of androgenetic alopecia in women and in men - short version. J Eur Acad Dermatol Venereol. 2018;32(1):11-22. doi: 10.1111/jdv.14624. PMID: 29178529.Verified on 2 October 2026
- 2.Gupta AK, Polla Ravi S, Wang T, Talukder M, Starace M, Piraccini BM. Systematic review of mesotherapy: a novel avenue for the treatment of hair loss. J Dermatolog Treat. 2023;34(1):2245084. doi: 10.1080/09546634.2023.2245084. PMID: 37558233.Verified on 2 October 2026
- 3.Tang Z, Hu Y, Wang J, Fan Z, Qu Q, Miao Y. Current application of mesotherapy in pattern hair loss: A systematic review. J Cosmet Dermatol. 2022;21(10):4184-4193. doi: 10.1111/jocd.14900. PMID: 35253335.Verified on 2 October 2026
- 4.Beer J, Boghosian T, Mendez H, Sayegh M, Boghosian N, Tosti A. Injectable Therapy for Androgenetic Alopecia: A Systematic Review. Dermatol Surg. 2026;52(7):659-665. doi: 10.1097/DSS.0000000000004999. PMID: 41603616.Verified on 2 October 2026
- 5.El-Komy M, Hassan A, Tawdy A, Solimon M, Hady MA. Hair loss at injection sites of mesotherapy for alopecia. J Cosmet Dermatol. 2017;16(4):e28-e30. doi: 10.1111/jocd.12320. PMID: 28160387.Verified on 2 October 2026
- 6.Landells I, Chow E, Gupta AK, Jasso Olivares JC, Thuraisingam T, Ahluwalia R, et al. A Canadian Consensus on Androgenetic Alopecia: Approach and Management. J Cutan Med Surg. 2025;29(5_suppl):5S-14S. doi: 10.1177/12034754251368849. PMID: 40986632.Verified on 2 October 2026
- 7.English RS Jr, Ruiz S, DoAmaral P. Microneedling and Its Use in Hair Loss Disorders: A Systematic Review. Dermatol Ther (Heidelb). 2022;12(1):41-60. doi: 10.1007/s13555-021-00653-2. PMID: 34854067.Verified on 2 October 2026
- 8.Gowda A, Healey B, Ezaldein H, Merati M. A Systematic Review Examining the Potential Adverse Effects of Microneedling. J Clin Aesthet Dermatol. 2021;14(1):45-54. PMID: 33584968.Verified on 2 October 2026
Educational content. It does not replace a medical consultation or provide a diagnosis. Tests and treatments are indicated only after medical consultation and in line with regulation.