Research on PRP for hair loss suggests it may help some people at some stages, and results vary. The honest answer depends on the stage of hair loss and on a provider's assessment.
PRP has been used in medicine for decades, in orthopedics and dentistry long before anyone applied it to scalps. Its use for hair loss is newer, and the evidence has been mixed, with early reviews concluding there was not enough support and more recent analyses reaching more favorable conclusions.
Here is what the research shows, who may respond, and what to ask a provider. This article is about PRP in general. Hideaway's own hair restoration treatment is different and is described below.
The Short Answer
- PRP uses your own concentrated platelets, injected into the scalp, with the aim of stimulating existing follicles.
- Some systematic reviews report increased hair density compared with placebo. Study quality varies.
- It is discussed for thinning, miniaturizing follicles. It is not described as reviving follicles that are gone.
- Providers often say earlier treatment matters more, but results vary.
- Studies describe an initial series, and benefits are not described as lasting if treatment stops.
How It Works
Blood is drawn from your arm, spun in a centrifuge to concentrate the platelets, and the resulting plasma is injected across the thinning areas of the scalp in a grid pattern.
Platelets carry growth factors, the signaling proteins the body uses in tissue repair. The working theory is that delivering a concentration of these near the follicle may affect the hair cycle, but the mechanism is not settled.
The key word is existing. PRP is discussed for follicles that are still alive but underperforming. It is not described as creating new follicles or reviving ones that have already closed over.
What the Research Says
The evidence has evolved, and it is worth understanding the trajectory rather than cherry picking a single study.
A systematic review published in 2019 concluded there was insufficient evidence to support PRP for androgenetic alopecia. Since then the volume of research has grown.
A systematic review and meta-analysis of randomized controlled trials found that PRP increased hair density at three and six months with statistically significant differences compared with placebo. A separate comprehensive review and meta-analysis focused on female pattern hair loss examined dozens of studies covering more than fifteen hundred cases and described PRP as a promising non surgical option.
The honest caveats: study protocols vary widely in preparation method, injection technique, session number and spacing, which makes direct comparison difficult. Sample sizes are often modest. The evidence is developing and is not as deep as for long established medications.
What the Studies Cannot Tell You
Even well designed studies describe averages across groups of people, not what will happen to one person. They use different preparation methods, different numbers of sessions and different ways of measuring hair, so a result in one study does not carry over neatly to a clinic down the road. Studies also tend to report on people who completed the protocol. If you are weighing PRP, the useful questions are about your own hair, your own history and what a provider can show you about how they judge progress, rather than about a headline number.
Who Responds Best
Studies and providers describe candidacy as important, and a provider decides who may be a candidate.
Who it is discussed for: people in earlier stages of pattern hair loss, where thinning is visible but the scalp is not bare. Whether it suits you is a decision for a licensed provider.
Who it is not described for: anyone with completely bald areas where follicles have closed. PRP is not described as reviving follicles that are gone.
PRP has also been studied for other forms of hair loss, though the evidence is limited outside pattern hair loss. Ask a provider what applies to you.
The Treatment Schedule
Studies describe a series of treatments, so it helps to ask a provider about the commitment before you start.
Studies and clinics describe different schedules, and the number of sessions and how often they are repeated vary. Ask a provider what they would recommend for you and why.
Hair grows slowly, so any change takes time and results vary from person to person. Ask a provider what timeline to expect and how they will judge whether it is working.
If you want to track change, ask a provider about taking photographs in consistent lighting, since hair changes gradually.
Why Results Vary So Much Between Clinics
If you have read wildly different accounts of PRP, from life changing to complete waste of money, this section explains most of the gap.
There is no single standardized PRP protocol. Clinics differ in the type of centrifuge and tube system used, the spin speed and duration, and so the final platelet concentration. If you want to understand how PRP differs from PRF, our PRF vs PRP comparison explains the two preparations.
Injection technique varies too, including depth and the density and pattern of the injections.
The number and spacing of sessions vary as well, and studies that report benefit generally describe a course of treatment rather than a single visit.
Reasonable questions to ask: how do you prepare the PRP, how many sessions do you recommend and why, what are the risks, and how will we decide whether it is working.
What the Appointment Is Like
Appointment length varies, so ask when you book. Blood is drawn from your arm, as for a routine test, and then processed while your scalp is prepared.
The scalp is sensitive, and many people describe injections as a series of stings or pressure. Ask a provider about numbing options and what to expect.
Afterward the scalp may be tender or slightly swollen. Your provider will give you aftercare instructions, such as when to wash your hair and when to resume exercise, and you should follow those.
PRP Compared to the Alternatives
It helps to see where PRP sits among the options rather than considering it in isolation.
Topical and oral medications for pattern hair loss are the long established first line, with the deepest evidence behind them. Each has its own side effect profile, which is worth discussing with a provider. Some people use them alongside other options, and a provider can advise.
Hair transplant surgery moves follicles from an area that is not thinning to one that is. It is a surgical procedure with its own recovery and risks, and a surgeon can tell you whether it applies to you.
Low level laser devices are another option people discuss with providers, with more modest reported results.
PRP is generally described as more involved than a topical treatment and less than surgery. Where it fits depends on the person, and a provider can advise.
Getting Ready for a Hair Loss Appointment
Before you see a provider, it can help to note when you first noticed shedding or thinning, whether it runs in your family, and anything that changed around the same time, such as illness, stress, a new medicine or a change in diet. Bring a list of your medicines and supplements, and any recent blood test results. Photographs of your hair taken in the same lighting over several months can show a provider how your hair has changed. None of this commits you to treatment, and a licensed provider decides what is appropriate for you after an assessment.
PRP as Part of a Plan, Not the Whole Plan
Providers often discuss combining approaches. Established medical treatments for pattern hair loss work through different mechanisms, and a provider can advise on what is appropriate for you.
It is also worth finding out what may be contributing to your hair loss. Thyroid problems, iron deficiency, nutritional gaps and hormonal changes can all be associated with hair loss, and a provider can advise on appropriate testing.
Hideaway does not list PRP hair injections as a service. Our hair restoration page describes a non-invasive, needle-free in-office scalp treatment paired with at-home Derive Hair Wellness serums, and a consultation looks at your scalp and your goals. We see patients from Raymore, Belton, Harrisonville and across the south Kansas City metro. If you have questions, get in touch.
Questions to Ask Any Provider About Hair Loss
A consultation is the place to ask about your own situation:
- What do you think is causing my hair loss, and what tests do you recommend?
- What treatment do you suggest for me, and what is the evidence for it?
- What are the risks and side effects, and who do I call if I have a concern?
- How will we decide whether it is working, and when?
- What happens if I stop treatment?
A licensed provider who has examined your scalp decides what is appropriate for you, and no one can promise a specific result.