Does PRP Work for Hair Loss? Sessions, Cost, Evidence

PRP for hair loss is a treatment that uses a concentrated portion of your own blood and injects it into areas of thinning hair. It is most commonly studied for androgenetic alopecia, also called male or female pattern hair loss.

The important question is not simply whether PRP “works.” The better question is who is likely to benefit, how many sessions are needed, how long results take, and whether the evidence is strong enough to justify treatment.

Current research suggests that PRP can improve hair density in some people with androgenetic alopecia, but studies differ considerably in how PRP is prepared, how often it is injected and how outcomes are measured. Recent systematic reviews have therefore described the evidence as promising but limited by heterogeneity, risk of bias and low-certainty evidence.

What Is PRP and What Does It Do to a Hair Follicle?

PRP stands for platelet-rich plasma.

During treatment, a small amount of the patient’s blood is collected and processed to concentrate platelets. The resulting plasma is then injected into areas of hair thinning.

Platelets contain a range of biological signalling substances. The proposed aim of PRP treatment is to support the activity of miniaturised hair follicles and improve the environment around them.

PRP does not create a completely new follicle where one no longer exists. This distinction is important.

If a person has thinning hair with functioning follicles that have become smaller, there may be an opportunity to improve density. A completely bald area where follicles have been permanently lost is different.

Does PRP Really Work for Hair Loss?

Research suggests that PRP may improve hair density in androgenetic alopecia, but it should not be described as a guaranteed treatment.

A 2024 systematic review of male androgenetic alopecia included eight randomised controlled trials and one cohort study involving 291 participants. Six studies reported statistically significant increases in hair density compared with controls, while five reported significant increases in hair count. However, the review also found moderate risk of bias in most studies and substantial variation between them.

Another 2024 systematic review and meta-analysis included 14 studies involving 431 people. It found an increase in hair density, but the authors rated the evidence as low quality and highlighted substantial differences between studies and evidence of publication bias.

Earlier meta-analysis research also found increased hair density at three and six months compared with placebo, while noting that the evidence base was still developing.

So the realistic answer is:

PRP can help some people with pattern hair loss, but the response is variable and the evidence does not support promising the same result for everyone.

Who Is PRP Most Suitable For?

PRP is generally considered when there is ongoing thinning but still viable hair follicles.

It may be considered for:

• Male pattern hair loss
• Female pattern hair loss
• Early or moderate thinning
• Areas where hair density has gradually reduced
• Some patients who want a non-surgical treatment option

The Indian Association of Dermatologists, Venereologists and Leprologists has described PRP as an option for androgenetic alopecia and recommends a course of multiple sessions rather than a single injection. Its consensus recommendations describe three to five sessions at approximately one-month intervals.

A consultation is still needed because hair loss has many causes.

Which Hair Loss Types May Not Respond to PRP?

PRP should not be presented as a universal hair-loss treatment.

It may not solve hair loss caused by:

• A completely bald area with permanent follicle loss
• Advanced scarring alopecia
• Significant scar tissue replacing follicles
• Hair loss caused by an untreated underlying disease
• Certain active inflammatory scalp conditions
• Hair loss where the underlying cause has not been diagnosed

For example, if follicles have been permanently destroyed by scarring, injecting PRP cannot recreate those follicles.

In such situations, the priority may be diagnosis and treatment of the underlying condition, followed by consideration of other options such as hair transplantation when appropriate.

How Many PRP Sessions Are Needed?

There is no single universal PRP schedule.

A commonly used initial course is three to four sessions, with approximately four weeks between sessions. Some clinical recommendations use three to five sessions separated by about one month.

Your treatment schedule may therefore look like this:

Stage	What is done	What may change by then	Cost
Session 1	Initial PRP treatment	Treatment begins	Clinic’s current PRP cost
Session 2	Second PRP session	Early response is assessed	Clinic’s current PRP cost
Session 3	Third PRP session	Shedding and density are reviewed	Clinic’s current PRP cost
Session 4	Fourth PRP session	Initial course is completed	Clinic’s current PRP cost
Month 6	Maintenance assessment	Density and shedding reviewed	Current maintenance cost
Month 12	Maintenance assessment	Longer-term response reviewed	Current maintenance cost

The clinic should insert its current verified cost for each visit rather than publishing an outdated or invented figure.

When Will You See a Change?

PRP does not produce an instant increase in hair density.

Hair growth follows a biological cycle, so changes take time.

Some patients may notice reduced shedding before they see obvious density improvement. Visible improvement generally needs several months of follow-up.

A practical way to assess the response is to compare standardised photographs at baseline and during follow-up rather than relying on day-to-day mirror checks.

The important milestones are usually:

• First 1–2 months: too early to judge final results
• Around 3 months: early response may become easier to assess
• Around 4–6 months: density changes may become more noticeable
• Around 6 months: useful point for reviewing whether continued treatment makes sense
• Around 12 months: longer-term response and maintenance needs can be reassessed

Individual responses vary.

Does PRP Need Maintenance?

Often, yes.

PRP is not generally considered a one-time permanent solution for pattern hair loss. Pattern hair loss itself is a continuing process.

After the initial course, some clinics use maintenance sessions approximately every four to six months, depending on the patient’s response and treatment plan.

Maintenance should not automatically continue forever simply because the patient has completed the initial course.

The response should be reviewed before additional sessions are planned.

What Does a Year of PRP Cost?

The total annual cost depends on:

• Price per PRP session
• Number of initial sessions
• Number of maintenance sessions
• Whether consultation is charged separately
• Whether additional scalp treatments are included
• Whether PRP is combined with medication or other therapies

For example, a patient receiving four initial sessions and two maintenance sessions will have a different annual cost from someone receiving three initial sessions and one maintenance session.

A useful estimate therefore needs to be based on the actual treatment plan, rather than simply multiplying a generic per-session price.

Before paying a deposit, ask the clinic to provide:

1. Cost per PRP session
2. Number of sessions recommended
3. Maintenance schedule
4. Consultation charges
5. Any additional treatment charges
6. Whether medicines are included
7. Whether follow-up reviews are included

PRP vs Minoxidil

PRP and minoxidil are different treatments.

Minoxidil is a topical medication commonly used for pattern hair loss. PRP involves injections of the patient’s own platelet-rich plasma.

They should not be compared only by asking which one is “better.”

A 2025 systematic review and meta-analysis comparing PRP with topical minoxidil included nine randomised controlled trials involving 451 participants. It found some outcomes that favoured PRP, but several measures showed similar results between the treatments.

Another 2024 review examined PRP combined with minoxidil versus minoxidil alone and found better hair-density outcomes with the combination in the included trials, although several studies had important risk-of-bias concerns.

This means treatment should be individualised rather than presenting PRP as a replacement for medication in every patient.

Read the PRP versus minoxidil comparison to understand the differences in treatment approach, maintenance and expectations.

PRP vs Hair Transplant

PRP and hair transplantation solve different problems.

PRP aims to support existing thinning follicles.

Hair transplantation moves follicles from a donor area to an area where additional hair coverage is required.

PRP may therefore be more relevant when follicles are still present but thinning.

A transplant may be considered when there is significant permanent hair loss and sufficient donor hair is available.

PRP may also have an adjunctive role around hair transplantation. The IADVL consensus specifically notes that PRP can have an adjunctive role in hair-transplant procedures.

Neither treatment should be selected simply because it is advertised as producing faster or better results. The cause and stage of hair loss need to be assessed first.

Can PRP Be Done After a Hair Transplant?

PRP may be considered after a hair transplant in selected patients.

The purpose may be to support the surrounding thinning hair or as part of a broader hair-treatment plan.

However, PRP does not replace proper transplant aftercare and should not be assumed to be necessary for every transplant patient.

The timing should be decided by the operating doctor.

Is PRP Safe for Women With Hair Thinning?

PRP has also been studied in women with hair loss.

A 2024 systematic review and meta-analysis of 21 studies involving 628 participants reported improvements in hair density and thickness in women treated with PRP. The reported adverse effects were generally mild and temporary, although treatment protocols differed between studies.

Before PRP, the cause of female hair thinning should still be assessed.

Possible contributors can include:

• Pattern hair loss
• Iron deficiency
• Thyroid disorders
• Hormonal changes
• Nutritional deficiencies
• Recent illness or stress
• Certain medications

Treating an underlying cause may be more important than proceeding directly to PRP.

Is PRP Painful?

PRP involves multiple small injections into the scalp.

Most patients experience some degree of discomfort, particularly during the injections. A topical or local numbing method may be used depending on the treatment protocol.

Temporary tenderness, redness or swelling can occur afterward.

Severe or persistent pain, significant swelling, discharge or other unexpected symptoms should be reported to the treating clinic.

When Should PRP Be Stopped and Surgery Discussed?

PRP should be reviewed if there is little or no meaningful improvement after an appropriate initial course.

A doctor may reassess:

• Hair density
• Hair calibre
• Shedding
• Photographic changes
• Diagnosis
• Progression of hair loss
• Donor-hair availability

If substantial permanent hair loss remains and the patient has adequate donor hair, a hair transplant may be discussed.

That does not mean every patient who does not respond to PRP automatically needs surgery. The next step depends on the diagnosis, degree of hair loss and treatment goals.

How to Judge Whether PRP Is Working

Do not judge PRP only by looking at your hair every morning.

A better approach is to take photographs under consistent conditions:

• Same lighting
• Same camera
• Same angle
• Same hair length
• Same parting
• Similar distance from the scalp

Compare photographs at baseline, around three months, six months and later follow-ups.

This makes gradual density changes easier to identify.

What Should You Ask Before Starting PRP?

Before starting treatment, ask:

1. What is causing my hair loss?
2. Do I still have viable follicles in the thinning areas?
3. How many PRP sessions do I need?
4. How far apart will the sessions be?
5. When will my response be assessed?
6. What is the cost per session?
7. What will maintenance cost?
8. Is medication also recommended?
9. What happens if PRP does not produce enough improvement?
10. Would a hair transplant be more appropriate for my pattern of hair loss?

Final Takeaway

Does PRP work for hair loss?

For some people with androgenetic or pattern hair loss, research suggests that PRP can improve hair density. However, the evidence is not strong enough to promise the same response to every patient. Recent systematic reviews have identified potential benefits while also highlighting differences between treatment protocols, study quality and outcome measurements.

A typical initial plan may involve three to four PRP sessions approximately four weeks apart, followed by response assessment and, where appropriate, maintenance every four to six months.

PRP works best as part of a properly diagnosed hair-loss treatment plan. It cannot recreate follicles that have been permanently destroyed, and it should not be promoted as a cure for every form of baldness.

The most useful next step is to identify the cause of hair loss, establish whether viable follicles remain, discuss realistic expectations and understand the complete cost of the initial course and maintenance before treatment begins.

Frequently Asked Questions