PRP for Hair Loss: Pros, Cons and Evidence

What it is

Platelet-rich plasma, or PRP, therapy is a procedure in which a small sample of your own blood is drawn, spun in a centrifuge to concentrate the platelets, and then the resulting platelet-rich portion is injected back into the scalp in the areas of thinning. Because it uses your own blood, it's sometimes described as a 'natural' or 'regenerative' therapy, though it's still an in-office medical procedure with its own costs, discomfort and variability in outcomes.

PRP has been used in other areas of medicine, including orthopedics and wound healing, for longer than it's been applied to hair loss, and its use for hair is a more recent extension of that broader interest in platelet-derived growth factors. It's typically offered by dermatologists or hair-restoration clinics, sometimes packaged alongside other services like microneedling.

How it works

Platelets contain a range of growth factors that are involved in tissue repair and, potentially, in stimulating dormant or miniaturized hair follicles. The theory behind PRP for hair loss is that concentrating and delivering these growth factors directly into the scalp may help extend the growth phase of the hair cycle and support the health of existing follicles, though the exact mechanisms are still being studied.

Because there's no single standardized protocol for how PRP is prepared or how it's injected, results can vary quite a bit from clinic to clinic, which makes it harder to draw firm conclusions from the research as a whole compared with more standardized treatments like topical Minoxidil.

Key facts at a glance

Pros

• Uses your own blood, so allergic reaction risk is low
• Can be discussed alongside other treatments like Minoxidil or microneedling
• Minimal downtime, with most people returning to normal activities the same day

Cons and risks

• Costly, and typically needs to be repeated periodically to maintain any effect
• No single standard protocol, which makes it hard to compare results across clinics or even trust marketing claims from one clinic to the next
• Injections can be uncomfortable, even with numbing
• Results vary significantly from person to person, and not everyone responds

Who it may suit

PRP tends to be discussed by people with pattern hair loss who are looking for an adjunct treatment, ideally through a reputable clinic with experienced practitioners and transparent protocols, rather than as a stand-alone fix.

It's a reasonable thing to bring up with a dermatologist if you're already using first-line treatments and want to explore additional options, understanding that the evidence, while promising in places, isn't as robust or consistent as it is for Minoxidil or finasteride.

What to ask before booking a PRP series

• How is the PRP prepared, and what concentration of platelets does the process typically achieve?
• How many sessions make up a full course, and what does maintenance look like afterward?
• What results have you seen in patients with a similar pattern and stage of hair loss to mine?
• What's the total cost for an initial course plus a year of maintenance?
• Do you recommend combining PRP with other treatments, and why?

Medical note

This guide is educational and published by FOLIGAIN®, the maker of OTC Minoxidil and cosmetic hair-care products. Prescription treatments and procedures require assessment by a licensed clinician, who can weigh your history, other medicines and goals. Never start, stop or combine prescription medicines without medical advice.