PRP for hair loss: what the evidence says so far

Platelet-rich plasma, or PRP, is one of the most advertised hair treatments in Malaysia. It sounds appealing because it uses your own blood. But how well does it work, and for whom? This article summarises what the research suggests so far, without the marketing.

What PRP is

Blood contains platelets, small cell fragments that help with clotting and release growth factors involved in healing. In PRP treatment, a small amount of your blood is taken, spun in a machine to concentrate the platelets, and then injected into the scalp in the thinning areas. The idea is that the growth factors may support hair follicles ¹.

What the evidence suggests

PRP has mostly been studied in androgenetic alopecia, also called pattern hair loss.

• A systematic review and meta-analysis of PRP for pattern hair loss found it may increase hair density compared with control treatments, although studies differed widely in their methods ¹.
• Studies in women with pattern hair loss also suggest a possible benefit ².
• Some studies have looked at adding PRP to minoxidil and found the combination may give better results than minoxidil alone ³.
• A broader review of non-surgical treatments for pattern hair loss included PRP among the options with some supporting evidence, while noting the limits of the data ⁴.

The honest summary is that PRP may help some people with pattern hair loss, but the evidence is less established than for minoxidil or finasteride, and results vary.

Why results vary so much

There is no single standard way to prepare or deliver PRP. Studies and clinics differ in ¹:

• How the blood is processed and how concentrated the platelets are
• Whether an activating agent is added
• How much is injected, and where
• How many sessions are given and how far apart
• Whether PRP is combined with other treatments

This makes it hard to compare one clinic's PRP with another's, or with the results in published studies.

What a course usually involves

Clinics commonly offer an initial series of sessions spaced weeks apart, followed by maintenance sessions. Each session takes a blood sample and then injects the prepared plasma into the scalp. Some clinics use numbing cream or local anaesthetic. Ask how many sessions are planned and what the total cost will be, including maintenance.

Side effects and who should avoid it

Common side effects include pain during injection, temporary redness, swelling, tenderness and minor bleeding at injection sites. Because PRP involves injections and handling of blood, hygiene and sterile technique are essential. People with certain blood disorders, those taking blood thinners, or those with active scalp infection may not be suitable. Discuss your medical history with the doctor first.

Who might consider PRP

PRP is mainly discussed for pattern hair loss. It is not a treatment for every cause of hair loss. Shedding after illness or childbirth often recovers by itself ⁵, and patchy or scarring hair loss needs a dermatologist's assessment ⁶.

Questions to ask before a PRP course

• What is my diagnosis, and why is PRP suitable for it?
• Who performs the injections, and what are their qualifications?
• How is the PRP prepared?
• How many sessions do you recommend, and what is the full cost?
• How will we measure whether it is working, for example with standard photos?
• Should I use it together with minoxidil or other treatment?
• What happens if I see no improvement after the initial sessions?

How to judge whether it is helping

Because hair changes slowly, it is easy to be unsure. Ask the clinic to take standard photos before you start, in the same light and position, and compare them after several months. Keep using any other treatments the same way during this time, so you can tell what is making a difference.

The bottom line

PRP is a reasonable option to discuss for pattern hair loss, especially alongside established treatments, but it is not proven to work for everyone and protocols vary. Make sure you have a clear diagnosis and realistic expectations first. Our guide to hair loss treatment in Malaysia puts PRP in context with other options.

Frequently asked questions

Does PRP work for hair loss?

Studies suggest PRP may increase hair density in some people with pattern hair loss, but results vary and protocols differ between clinics ¹.

How many PRP sessions are needed?

Clinics commonly offer an initial series of several sessions weeks apart, followed by maintenance. There is no single agreed schedule.

Is PRP better than minoxidil?

The evidence for minoxidil is more established. Some studies suggest combining PRP with minoxidil may give better results than minoxidil alone ³.

Is PRP safe?

Side effects are usually mild, such as pain, redness and swelling at injection sites. It must be done with sterile technique, and some people, such as those with blood disorders, may not be suitable.

Educational content. Not medical advice.