PRP Injection for Hair Loss: Step-by-Step Patient Walkthrough

This article provides a step-by-step patient walkthrough of the PRP injection process for hair loss — explaining what the treatment involves, how it is believed to work, what the procedure looks like from start to finish, realistic expectations, aftercare considerations, and when speaking with a qualified practitioner might be a helpful next step.

For a treatment overview, the PRP injections service page summarises indications and consultation pathways.

Understanding the process fully is an important part of making an informed, confident decision about any treatment.

A PRP injection for hair loss is a procedure in which a patient's own blood is drawn, processed to concentrate the platelets, and then injected into areas of the scalp experiencing thinning or hair loss. Platelet-rich plasma contains growth factors that may support the activity of hair follicles, making it a subject of ongoing clinical interest for hair restoration.

Hair loss — medically referred to as alopecia — can occur for a wide range of reasons. The most commonly discussed form is androgenetic alopecia, also known as male or female pattern hair loss, which is influenced by genetic factors and hormonal changes over time. Other contributing factors may include nutritional deficiencies, stress, certain medical conditions, hormonal fluctuations, and changes related to ageing.

Hair follicles pass through natural growth cycles: a growth phase (anagen), a transition phase (catagen), and a resting phase (telogen). When follicles are affected by underlying factors, this cycle can be disrupted — leading to progressively finer or shorter hairs, and in some cases, cessation of hair production in particular areas.

Because hair loss has numerous potential causes, it is important for any patient researching treatments to first seek an assessment from a qualified practitioner. Understanding the underlying cause of hair loss helps determine which approaches may be appropriate in a given situation. There is no single treatment that is universally suitable for everyone.

Platelet-rich plasma is derived from the patient's own blood. Blood contains red blood cells, white blood cells, plasma, and platelets. Platelets are best known for their role in clotting, but they also contain a variety of growth factors — signalling proteins that play a role in tissue repair and cellular communication.

When blood is processed through centrifugation (spinning at high speed), the different components separate by density. This allows clinicians to isolate a concentrated layer of plasma that is rich in platelets and their associated growth factors, including platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), and insulin-like growth factor (IGF), among others.

The scientific hypothesis behind PRP for hair loss is that introducing a concentrated dose of these growth factors directly into the scalp may help to stimulate dormant or weakened follicles, encourage vascularisation (blood supply to follicles), and potentially extend the anagen (growth) phase of the hair cycle.

It is important to note that while research in this area is ongoing and results from published studies are generally encouraging, the evidence base is still developing. Results can vary between individuals, and PRP is not a guaranteed solution for all types of hair loss.

Understanding what happens during the procedure can help reduce anxiety and set realistic expectations. The following is a general overview of a typical PRP session for hair loss:

Step 1 – Initial Consultation and Assessment

Before any treatment takes place, a thorough consultation with a qualified practitioner is essential. During this appointment, the practitioner will review your medical history, assess the pattern and likely cause of hair loss, and discuss whether PRP may be a suitable option for your individual situation. This is also the opportunity to ask questions, understand realistic outcomes, and discuss any contraindications.

Step 2 – Blood Draw

On the day of the procedure, a small amount of blood — typically between 20 and 60 millilitres — is drawn from a vein in the arm. This is similar in nature to a routine blood test and is generally well tolerated.

Step 3 – Centrifugation and PRP Preparation

The blood sample is placed into a centrifuge, a device that spins the blood at high speed to separate its components by density. This process typically takes around ten to fifteen minutes. The resulting platelet-rich plasma is then carefully extracted and prepared for injection.

Step 4 – Scalp Preparation

Prior to injection, the scalp is cleansed. Depending on the clinic's approach and the patient's preference, a topical anaesthetic may be applied to the scalp to help minimise discomfort during the injection phase.

Step 5 – PRP Injections into the Scalp

Using a fine needle, the prepared PRP is injected at multiple points across the areas of the scalp being targeted. The practitioner will use a systematic pattern to ensure even distribution across the treatment area. The number of injection points and the overall depth of injection will depend on the extent of hair loss and the treatment protocol used by the clinic.

Step 6 – Post-Procedure Care and Guidance

Once the injections are complete, aftercare instructions are provided. The session itself typically takes between 60 and 90 minutes in total, including preparation time. Patients can usually return home shortly after.

PRP for hair loss is not appropriate for everyone, and treatment suitability must be determined through an individual assessment with a qualified practitioner.

Patients who may be considered for PRP hair treatment often include those experiencing early to moderate stages of androgenetic alopecia (pattern hair loss), or those with diffuse thinning where some follicular activity is still present. PRP is generally considered more effective when there are still active or partially active hair follicles in the treatment area.

Patients who are in good general health and have realistic expectations regarding outcomes tend to be better candidates. Certain medical conditions, medications (such as blood thinners), active scalp infections, or a history of blood disorders may mean that PRP is not appropriate for a particular individual.

It is also worth noting that PRP is typically not considered a first-line intervention for all causes of hair loss. For some patients, it may be discussed as a complementary approach alongside other treatments. The most appropriate course of action will always depend on individual circumstances and should be discussed openly with a practitioner.

Patients considering PRP injections for hair loss should approach the treatment with a balanced understanding of what may realistically be achievable.

Potential benefits that have been reported in the literature include:

Slowing of hair shedding in some patients

Improvements in hair density or thickness in areas of thinning

Improved scalp health and microcirculation in the treatment area

A procedure that uses the patient's own biological material, reducing the risk of allergic reaction

Realistic expectations to keep in mind:

Results vary significantly between individuals

PRP is not a cure for hair loss and cannot regenerate follicles that have become completely inactive

Multiple treatment sessions are typically required before results become noticeable

Results are not permanent; maintenance sessions are often recommended

Not all patients will experience the same degree of improvement

Some patients may not respond to PRP

Being well-informed before beginning any treatment helps patients make decisions that align with their personal goals and circumstances.

Patients researching hair loss treatments will often encounter a range of options. PRP sits within a broader landscape that includes topical treatments, oral medications, nutritional support, mesotherapy, and surgical hair transplantation. Each approach carries its own profile of considerations, evidence base, and suitability criteria.

PRP is frequently discussed as a non-surgical option, which appeals to patients who are not yet at a stage where surgical intervention is being considered, or who prefer a treatment that does not involve significant downtime. It may also be explored alongside other treatments as part of a comprehensive hair health plan.

For patients interested in related injectable treatments for skin health and tissue support, Jalupro biorevitalisation treatments offer an amino acid-based approach to supporting skin quality and may be of interest as part of a broader aesthetic consultation.

It is important that any comparison between treatments is discussed in the context of an individual assessment rather than general assumptions. What is appropriate for one person may not be appropriate for another.

PRP for hair loss is rarely a single-session treatment. Protocols vary between clinics and practitioners, and the recommended number of sessions will depend on the individual's presentation, the degree of hair loss, and how well a patient responds to initial treatment.

A commonly discussed starting protocol involves an initial course of three to four sessions, typically spaced four to six weeks apart. Following this initial course, maintenance sessions — often every three to six months — may be recommended to help sustain any improvements achieved.

Patients should be aware that visible results are unlikely to appear immediately. Hair growth cycles mean that any improvements typically become more apparent several months into a treatment course. Patience and consistency are often cited as important factors by practitioners working in this area.

The specific protocol recommended for any individual patient should be discussed and agreed during consultation.

Following a PRP hair injection session, practitioners will typically provide specific aftercare guidance. The following general points are commonly discussed — however, individual aftercare should always be tailored by the treating practitioner:

Avoid washing the hair or applying products to the scalp for the first 24 hours following treatment

Avoid vigorous physical exercise for 24 to 48 hours, as increased blood flow may affect the treated area

Avoid direct sun exposure to the scalp in the days following treatment, and use appropriate sun protection when outdoors

Refrain from applying heat to the scalp (such as hairdryers on high settings) in the immediate post-treatment period

Avoid alcohol and smoking in the days surrounding treatment, as these can affect circulation and tissue recovery

Stay well hydrated and maintain a balanced diet to support general hair and scalp health

Avoid blood-thinning medications or supplements unless advised otherwise by your practitioner

Supporting overall health through nutrition, sleep, and stress management may also contribute positively to hair health over time. Practitioners may offer further tailored advice based on individual circumstances.

As with any injectable procedure, PRP hair treatment carries a range of potential risks and limitations that should be considered as part of informed decision-making.

Commonly reported side effects include:

Temporary redness, swelling, or tenderness at the injection sites

Minor bruising on the scalp

A sensation of tightness or mild discomfort in the treated area

Temporary headache following the procedure

Less common but possible considerations include:

Infection at injection sites (reduced by proper sterile technique)

Temporary increase in hair shedding in the early weeks following treatment — this can sometimes occur as follicles respond to stimulation

Allergic reactions are rare due to the autologous (self-derived) nature of PRP, but reactions to local anaesthetic products or equipment should be discussed

PRP is not suitable for patients with active scalp conditions, certain blood disorders, those on anticoagulant medications, or patients who are pregnant. A thorough pre-treatment consultation and health assessment is essential to identify any contraindications.

The limitations of PRP must also be clearly understood: it cannot regenerate follicles that are fully inactive, and it is not a permanent solution. Results are variable and not guaranteed.

If you are experiencing changes in your hair density, increased shedding, or visible thinning, it may be helpful to seek a professional assessment. A qualified practitioner can help to identify the possible cause of hair loss, discuss available options, and explain what may or may not be realistic in your individual situation.

You may wish to consider a consultation if you have noticed:

Gradual thinning at the crown or hairline

Increased hair shedding over a period of weeks or months

Changes in hair texture or density

A family history of hair loss and a desire to explore preventative or early-intervention options

Uncertainty about which treatment approaches might be appropriate for your specific situation

Seeking a consultation does not commit you to any particular treatment. It is an opportunity to gather information, ask questions, and make an informed decision with the support of a qualified professional.

For patients with broader skin health concerns alongside hair loss, a professional aesthetic consultation at Pantaleo can provide a comprehensive assessment of individual treatment options.

If pain and comfort are a key concern, this companion guide on whether PRP hair treatment hurts may be helpful before your appointment.

The safety, technique, and experience of the practitioner administering PRP treatment plays a significant role in the overall experience and outcome. Patients should seek treatment from appropriately qualified and regulated healthcare professionals.

In the United Kingdom, aesthetic injectable treatments should be administered by practitioners with recognised medical qualifications and appropriate training. Patients are encouraged to check practitioner credentials, ask about their training and experience with PRP specifically, and ensure that the clinic maintains appropriate clinical standards.

Regulatory bodies and professional organisations such as the Care Quality Commission (CQC), the General Medical Council (GMC), and the Joint Council for Cosmetic Practitioners (JCCP) provide useful guidance on practitioner standards and patient rights. Patients are always entitled to ask about a practitioner's credentials before proceeding with any treatment.

For patients also exploring skin rejuvenation treatments alongside hair health, The Science of Fibroblast Stimulation represents another useful educational resource on tissue support and regeneration.

PRP for hair loss is a procedure that uses growth factors derived from the patient's own blood, injected into the scalp to potentially support follicle activity

A thorough consultation is essential before any treatment, to assess individual suitability and identify underlying causes of hair loss

Results are variable and not guaranteed; multiple sessions are typically required, and results develop gradually over several months

The procedure is generally well tolerated, but carries risks and limitations that should be discussed openly with a qualified practitioner

PRP is not suitable for everyone, and contraindications must be assessed individually

Aftercare and overall scalp health play a role in supporting any potential outcomes from treatment

PRP injection for hair loss represents a non-surgical approach that continues to generate genuine scientific and clinical interest. By using the patient's own platelet-rich plasma to deliver growth factors directly to the scalp, the treatment aims to support follicle health and potentially improve hair density in areas of thinning.

Understanding what the procedure involves — from blood draw and centrifugation through to injection and aftercare — can help patients feel more informed and confident when considering this option. At the same time, it is essential to approach PRP with realistic expectations, recognising that results vary between individuals, multiple sessions are typically required, and the treatment is not universally suitable.

Hair loss is a complex subject with many contributing factors, and there is no single treatment that works for everyone. Seeking a professional assessment is always the most important first step.

Treatment suitability, risks, and expected outcomes should always be assessed individually during a professional consultation.

If you are considering PRP for hair loss and would like to discuss whether it may be appropriate for your situation, speaking with a qualified aesthetic practitioner can help you make an informed decision that is right for you.