On this page
- What has been reviewed
- The product being sold is usually not cells
- Why hair is unusually easy to oversell
- Establishing the diagnosis first
- What the established treatments achieve
- What is realistic
- Risks and costs
- Women and hair loss
- Questions worth asking
- Frequently asked questions
- Requesting a medical evaluation
Hair loss treatment is one of the largest markets in aesthetic medicine, and “stem cell hair treatment” is among its most successful phrases. Stem cell therapy for hair loss has a systematic review behind it — and read alongside the platelet-rich plasma literature, it becomes clear that most of what is sold under a stem cell name is PRP.
What has been reviewed
A systematic review has covered human stem cell use in androgenetic alopecia — Human Stem Cell Use in Androgenetic Alopecia: A Systematic Review.
Platelet-rich plasma has a systematic review and meta-analysis — Platelet-rich plasma for the treatment of alopecia: a systematic review and meta-analysis.
A review compared platelet-rich plasma against the established drugs and against cell-based therapy — Systematic Review of Platelet-Rich Plasma Use in Androgenetic Alopecia Compared with Minoxidil, Finasteride, and Adult Stem Cell-Based Therapy.
A network meta-analysis placed the non-surgical options against each other — Efficacy of non-surgical treatments for androgenetic alopecia: a systematic review and network meta-analysis — and a broader review covers management overall — Management of androgenic alopecia: a systematic review of the literature.
The product being sold is usually not cells
Most treatments marketed as stem cell hair therapy are one of three things: platelet-rich plasma, the stromal vascular fraction from a small fat harvest, or a conditioned medium or exosome preparation.
Only the second contains cells in any meaningful sense, and it is a mixed population rather than a defined cell product. Conditioned medium contains no cells at all.
That distinction affects which evidence applies. PRP has the largest literature; cultured cell therapy has the smallest.
PRP therapy and exosome therapy cover those products directly.
Why hair is unusually easy to oversell
Hair grows in cycles, and the proportion of follicles in the growing phase shifts with season, stress, illness and nutrition.
Shedding after a stressful period recovers on its own over months. Anyone treated during that recovery will see regrowth that was going to happen anyway.
Photography is also highly manipulable. Lighting, angle, hair length, wetness, parting and product change apparent density dramatically without a single new hair.
Standardised photography with fixed conditions and hair counts in a marked area is what trials use. Ask whether that is what will be done.
Establishing the diagnosis first
Androgenetic alopecia — pattern hair loss — is the commonest cause and has established treatments.
Telogen effluvium is diffuse shedding after illness, surgery, childbirth, weight loss or severe stress, and it resolves on its own once the trigger passes.
Iron deficiency, thyroid disease, and scarring alopecias are all causes with quite different management, and scarring alopecia in particular destroys follicles permanently — treating it as pattern loss wastes the window for stopping it.
A dermatologist can distinguish these. A clinic selling one treatment has little incentive to.
What the established treatments achieve
Minoxidil, applied topically or taken orally at low dose, has extensive randomised evidence and works for many people.
Finasteride and related drugs have large trials behind them in men, with a side-effect profile that should be discussed properly rather than dismissed in either direction.
Hair transplantation moves follicles that are genetically resistant to loss, and produces durable results in appropriate candidates.
These are the comparators. A network meta-analysis exists precisely so treatments can be ranked against each other, and any new option should be judged in that company.
Low-level laser devices have some randomised evidence and can be used at home, which makes them worth knowing about even though the effect sizes are modest.
What is realistic
Possible increase in hair density and thickness in pattern loss, on evidence that is real for PRP and thinner for cells.
Effects require maintenance. Whatever is driving the loss continues, and treatments that stop working when stopped are the norm in this field rather than the exception.
No regrowth from follicles that are gone. Once a follicle is scarred or lost, nothing currently available brings it back.
Realistic framing is slowing loss and modest thickening, not restoration.
Risks and costs
Injection pain, swelling and bruising of the scalp, usually short-lived.
Infection, rarely, and scalp folliculitis.
Fat harvest risks where stromal vascular fraction is used, which is a procedure for a cosmetic indication and should be presented as one.
The main cost is repeat sessions over years. Ask for total cost over three years rather than a per-session price. What drives the price covers this pattern.
Women and hair loss
Female pattern hair loss differs from the male pattern: diffuse thinning over the crown with the frontal hairline usually preserved, rather than recession and a bald patch.
It is also more likely to have a contributing cause worth finding. Iron deficiency, thyroid disease, polycystic ovary syndrome and the months after childbirth all produce hair loss in women and are all identifiable on testing.
Treatment options differ too, and some of the drugs with the largest evidence in men are not appropriate for women of childbearing age.
A clinic offering the same injection package regardless of sex, pattern and cause is not working from a diagnosis. Hormonal imbalance covers the endocrine side of this.
Questions worth asking
- What exactly is being injected — platelets, stromal fraction, cultured cells or conditioned medium?
- What type of hair loss do I have, and who diagnosed it?
- Will standardised photography and hair counts be used?
- Have I tried the treatments with the largest evidence base?
- What is the total cost over three years?
Cosmetic rejuvenation covers the adjacent aesthetic claims.
Frequently asked questions
Is stem cell hair treatment actually stem cells?
Usually not. Most of what is sold under that name is platelet-rich plasma, stromal vascular fraction, or a conditioned medium containing no cells.
Which has the best evidence?
Minoxidil and finasteride have the largest randomised evidence. PRP has a meta-analysis. Cultured cell therapy has the least.
Will my hair grow back?
Modest thickening and slowed loss is the realistic aim. Follicles that are already lost do not return.
Do I need repeat treatments?
Yes. Whatever drives the loss continues, so effects require maintenance. Ask for the total cost over three years.
Why are before-and-after photos unreliable?
Lighting, angle, hair length, wetness and parting change apparent density dramatically. Trials use standardised photography and hair counts.
Could my hair loss be something else?
Possibly. Telogen effluvium resolves on its own, and scarring alopecias destroy follicles permanently. A dermatologist can distinguish them.
Requesting a medical evaluation
Nothing on this page establishes whether any treatment is appropriate for you. That needs your history, your imaging and your current medications read by a clinician. If you would like that review, send your records and we will tell you honestly whether there is anything worth discussing — including when the answer is no.
This page is general information, not medical advice, and does not create a doctor–patient relationship. Regenerative treatments discussed here are in most cases investigational. Discuss any treatment with a clinician who knows your history.