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PRP for hair thinning:
does it actually work?

For the right person, yes. For the wrong one, it's an expensive disappointment. Here's who PRP helps, what realistic regrowth looks like, and the questions to answer before you start.

Journal · Hair · Guide · Updated September 13, 2026

The short answer: PRP works best on early-stage thinning, diffuse shedding and post-partum hair loss, where follicles are weakened but still alive. A realistic result is roughly a 20–40% improvement in density, visible from about month 3. The course is 3–4 sessions 4–6 weeks apart at $600 each, then maintenance every 6 months. It won't regrow hair on areas that have been bald for years.

How it works.

We take a small tube of your blood and spin it in Salient's Health Canada-licensed Cellenis system to concentrate the platelets. That platelet-rich plasma is injected across the thinning areas of the scalp. Its growth factors signal weakened follicles to move back into an active growth phase and improve circulation around them. Nothing synthetic goes in: it's entirely your own blood.

Who it helps most.

  • Good candidates: early androgenic (pattern) thinning, a widening part, diffuse shedding, and post-partum hair loss.
  • Less likely to help: advanced loss where follicles are no longer active. We'll tell you honestly if you're past the point where PRP makes sense.
  • Not suitable: platelet disorders, blood cancers or chemotherapy, systemic anticoagulants without a pause plan, pregnancy or breastfeeding, active scalp infection, anemia or recent significant blood loss.
What to expect
AppointmentAbout 45 minutes including the blood draw and 10–15 minutes of processing
ComfortScalp injections are more noticeable than facial ones. We use ice, topical anesthetic and short breaks
DowntimeMinimal. Avoid NSAIDs such as ibuprofen for 48 hours before and after, and alcohol for 24 hours
Course3–4 sessions, 4–6 weeks apart
First visible changeDensity improvement from around month 3
MaintenanceOne session every 6 months to hold the result
Cost$600 per session, so $1,800–2,400 for the initial course

Before you start, check the cause.

Thinning has many causes: genetics, hormones, post-partum changes, stress, nutrient deficiencies and autoimmune conditions. Some of these need a different fix, so nutritional bloodwork through your doctor is worth doing first. For androgenic patterns, topical minoxidil alongside PRP can enhance the response. For loss that is sudden, patchy or persistent, a dermatologist referral is the right next step.

PRP injections are performed by Torri Bennett, RPN. Photos at each visit let us track change objectively rather than by feel. See our hair thinning page and PRP / PRF therapy page for full details.

Quick questions.

It depends on how early you start. Early-stage thinning often sees a 20–40% improvement in density. Advanced loss sees less dramatic change and may not be a good candidate, and we would rather tell you that than sell a course.
Hair grows slowly, so the first visible density improvement is usually around month 3 after your first session. We photograph at every visit so you can compare objectively.
To hold the result, yes: typically one session every 6 months after the initial course. PRP does not change the underlying cause of pattern thinning, so the gains fade gradually if you stop.
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