How does PRP for hair work?
A small sample of your blood is processed to concentrate its platelets and growth factors, which are then injected into the scalp in the areas of thinning. The aim is to support the hair follicles and scalp environment, encouraging healthier, stronger hair growth. Because it uses your own blood, it's an autologous, biocompatible treatment. (Our PRP guide covers the science in more depth.) See PRP hair restoration.
What does the evidence suggest?
PRP has become widely used for hair loss, and a body of research suggests it can help support hair in suitable patients — particularly for certain types of thinning and earlier-stage loss. That said, the evidence base is still developing, results vary between individuals, and protocols differ between clinics. The honest summary: promising and widely used, but not a guaranteed outcome — which is why expectations and proper diagnosis matter. [cite: peer-reviewed]
Who is PRP for hair best suited to?
It tends to be most useful for: People with earlier-stage thinning, where there's still hair to support Certain types of hair loss, confirmed by diagnosis Those wanting a natural, autologous approach As part of a combination plan, often alongside medical treatment It's less suited to advanced loss where follicles are no longer active — in which case a doctor may discuss other options honestly. A diagnosis-first approach is what determines if PRP fits you.
What results are realistic?
PRP aims to support and improve hair quality and growth, and to help slow loss — not to guarantee dramatic regrowth. Results are gradual, usually needing a course of sessions plus maintenance, and they vary. It's often most effective combined with treating the underlying cause (e.g. hormones, deficiencies) and medical therapy. Set against realistic expectations, many people find it a worthwhile, natural option. Individual results vary.
PRP vs other hair treatments
PRP is one tool among several — and isn't an either/or with options like medical treatment or a hair transplant. In fact it's often combined with them. The right mix depends on your diagnosis, stage and goals, which is why an assessment with a dermatologist comes first rather than booking PRP blind.