Is PRP Safe. PRP Hair Side Effects Explained

PRP for hair is one of the safest hair loss treatments available, mainly because it uses your own blood, so the risk of an allergic reaction is very low. Side effects are uncommon, mild and temporary, confined to the scalp, and most settle within a day or two. It is not suitable for everyone, and a doctor should screen you first, but for the great majority of people it is a low-risk treatment with a strong safety record.

This guide is written by the medical team at The London PRP Clinic by The Wellness, a doctor-led clinic across Marylebone and Canary Wharf. Safety comes from proper screening and a doctor performing the treatment, which is exactly how we work, and it is a key reason patients trust us with PRP.

Want to check whether PRP is safe for you? Message a GMC-registered doctor on WhatsApp or email team@thewellnesslondon.com.

Is PRP for hair safe

Yes, PRP has a strong safety profile, and the main reason is that it is autologous, meaning it uses a concentrate made from your own blood. Because nothing foreign is introduced, the risk of an allergic or immune reaction is very low. PRP has been used across medicine for years, including in orthopaedics and sports injuries, and in hair loss it has been studied in a large number of trials with a consistently reassuring safety record.

Importantly, PRP has no hormonal effect, so it does not carry the sexual side effects that a small percentage of men report with finasteride. Its reported side effects are confined to the scalp and the treated area, and they are temporary. This combination of using your own blood and avoiding any systemic hormonal action is why PRP is often the option chosen by people who want an effective treatment with a gentle safety profile.

What are the side effects of PRP for hair

The side effects are mild and short-lived. The most common are tenderness, redness, slight swelling and occasionally minor bruising at the injection sites, along with the possibility of a mild headache or a feeling of tightness on the day. These typically settle within 24 to 48 hours. A small, temporary increase in shedding can sometimes occur in the early weeks as the hair cycle resets, which resolves on its own.

More serious effects are rare. As with any injection there is a small risk of infection, which proper sterile technique by a doctor minimises, and there can occasionally be a reaction to the local anaesthetic used for numbing. What you do not get are lasting or systemic side effects, since the treatment acts locally and uses your own blood. If any symptom has not settled within about five to seven days, you should seek advice, but for most people the after-effects are limited to a day or two of mild scalp tenderness.

Concerned about a specific side effect? Ask our doctors on WhatsApp.

Who should not have PRP

PRP is not suitable for everyone, which is exactly why a doctor should assess you first. It is generally avoided in people with a very low platelet count or a platelet function disorder, since the treatment relies on healthy platelets, and in those with active bloodstream infections, sepsis or an infection at the treatment site. Severe blood circulation problems and certain blood conditions are also reasons to avoid it.

Care is also needed with blood-thinning medication and with anti-inflammatory painkillers around the time of treatment, as these can affect how platelets work, and PRP is usually deferred in pregnancy and approached cautiously alongside active cancer. This is not a long or alarming list, but it is the reason a proper medical screening matters. At a doctor-led clinic, you are assessed for these before anything goes ahead, which a non-medical operator simply cannot do safely.

Why doctor-led treatment makes PRP safer

The safety of PRP depends heavily on who performs it and how, so this is where the choice of clinic genuinely matters. A doctor takes a full medical history, checks your medications and screens for the conditions that make PRP unsuitable, all before treatment. During the procedure, sterile technique reduces the small infection risk, and correct preparation and injection depth protect both safety and results.

At The London PRP Clinic by The Wellness, every treatment is performed by GMC-registered doctors, and we are a blood-test-first clinic, so we also check ferritin and iron stores, full thyroid function, vitamin D, B12, key hormones, HbA1c and zinc before treating. This means we understand your overall picture, not just your scalp. Choosing a doctor-led clinic over a non-medical operator is the single most important thing you can do to keep PRP as safe as it should be.

What does PRP cost in London

Doctor-led PRP in central London sits at the higher end at flagship clinics, with Harley Street and Mayfair providers commonly charging £600 to £850 or more per session. At The London PRP Clinic by The Wellness, treatment is doctor-led and priced below those flagship rates, with the exact figure confirmed when you enquire or at your consultation.

Where safety is concerned, the most important value is having the treatment performed by a GMC-registered doctor who screens you properly first, rather than choosing on price. Message us and we will explain what your treatment would involve.

Why people choose The London PRP Clinic by The Wellness

We are a doctor-led, blood-test-first clinic where every treatment is performed by GMC-registered doctors, which is the foundation of safe PRP. Across hair restoration we report an 87 percent patient success rate and an average density increase of 32 percent, supported by more than 187 five-star reviews.

If safety is your concern, that is precisely why we screen every patient before treatment and perform PRP to a medical standard. We will tell you honestly whether PRP is safe and suitable for you.

Take the first step today. Message us on WhatsApp, email team@thewellnesslondon.com, or call +44 20 3951 3429. Clinics in Marylebone, two minutes from Baker Street, and Canary Wharf.

Frequently asked questions about PRP safety

Is PRP for hair safe?

Yes. Because it uses your own blood, the risk of an allergic reaction is very low, and it has a strong safety record across many trials. Side effects are mild, temporary and confined to the scalp.

What are the side effects of PRP?

Most commonly mild tenderness, redness, slight swelling or minor bruising at the injection sites, sometimes a mild headache, usually settling within 24 to 48 hours. A small temporary increase in shedding can occur and resolves on its own.

Does PRP have sexual side effects like finasteride?

No. PRP has no hormonal effect, so it does not cause the sexual side effects a small percentage of men report with finasteride. Its effects are local to the scalp.

Who should not have PRP?

People with a very low platelet count or platelet disorder, active bloodstream or local infection, or severe circulation problems, with caution around blood thinners, pregnancy and active cancer. A doctor screens for these first.

Is PRP safer with a doctor?

Yes. A doctor screens your history and medications, uses sterile technique and correct method, which keeps PRP as safe as possible. This is why doctor-led treatment is strongly preferable to a non-medical operator.

Where in London can I have doctor-led PRP?

The London PRP Clinic by The Wellness has doctor-led clinics in Marylebone, two minutes from Baker Street, and Canary Wharf. Message on WhatsApp or call +44 20 3951 3429.

This article is for information and does not replace personal medical advice. All treatments at The London PRP Clinic by The Wellness are performed by GMC-registered doctors. Individual results vary. Reviewed by the medical team at The London PRP Clinic by The Wellness. Last updated June 2026.

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