PRP for Hair Loss: Is It Worth It? An Evidence-Based Review

PRP (Platelet-Rich Plasma) therapy for hair loss has become one of the most discussed treatments in dermatology — partly because of its genuine promise, and partly because of overselling by clinics that position it as a miracle cure. Here's an honest, evidence-based assessment.

What is PRP?

A small amount of your blood is drawn, placed in a centrifuge, and spun to separate and concentrate the platelet-rich plasma fraction. This PRP is then injected into the scalp using a fine mesotherapy needle. Platelets contain growth factors (PDGF, VEGF, EGF, IGF) that stimulate hair follicle activity, increase blood supply, and promote cellular proliferation.

What Does the Research Say?

Multiple randomised controlled trials (including studies published in the Journal of Cutaneous and Aesthetic Surgery) show that PRP significantly increases hair count, hair thickness, and the anagen (growth) phase in patients with androgenetic alopecia. A 2019 meta-analysis found PRP statistically superior to placebo in both hair count and density measures.

Who Does PRP Work Best For?

• Early-to-moderate androgenetic alopecia (Norwood 1–4)
• Patients with active but miniaturised follicles — confirmed on dermoscopy
• Alopecia areata (patchy hair loss)
• Telogen effluvium (stress-related shedding)
• Post-hair transplant — as a healing and density booster

Who Does PRP NOT Work For?

PRP cannot revive completely dead follicles — if the follicle is gone (confirmed by dermoscopy showing absent follicular units), PRP will not produce regrowth in that area. Patients with very advanced hair loss (Norwood 5–7) typically need a transplant rather than PRP alone.

What to Expect

A standard PRP course at Tru Glow consists of 6 sessions, one month apart. Most patients notice reduced shedding from session 2–3, with visible improvement in density and thickness from session 4 onwards. Results continue improving for 3–6 months after the final session. Annual maintenance sessions are recommended to sustain the result.

Is It Worth It?

For the right patient — yes. PRP is one of the most evidence-supported non-surgical hair loss treatments available, with a strong safety profile and measurable results. It's not a replacement for a transplant in advanced cases, but as a standalone treatment for early loss or as an adjunct to a transplant, it's genuinely excellent.