Before-and-after photographs can help assess a hair PRP course only when the images are comparable. Different lighting, parting, hair length or styling can make a scalp look changed without establishing that treatment caused new growth.
Evidence checked 1 November 2026. Prepared by The Wellness Team.
Why can two honest photographs look misleading?
Hair coverage changes with angle, light and styling. A wider parting, wet hair or brighter overhead light can expose more scalp; a different haircut or cosmetic fibres can conceal it. None of these proves that someone deliberately altered a result.
The practical response is standardisation. A published clinical photography guide recommends structured views for different hair-loss presentations so images support objective assessment and monitoring. A polished image is not necessarily a scientifically useful comparison.
What should a useful baseline record?
It should record the areas being assessed, the view, the condition of the hair and relevant treatment already in use. Global photographs show overall coverage; close-up or trichoscopic images may answer more specific questions.
Ask whether the same equipment, distance, angle, lighting and hair arrangement can be used at review. A parting should reveal the same area each time. If your hair length, colour or usual styling changes, record that change rather than pretending the images are directly equivalent.
Should I take my own photographs?
Personal photographs can help explain your concerns, but they are not a substitute for a clinical baseline. Choose a repeatable setup and avoid filters, beauty modes or cosmetic coverage that changes what is visible.
Bring existing images with dates if you have them. Do not delay an assessment of painful, inflamed, patchy or rapidly changing hair loss while trying to perfect a photo series. Diagnosis determines whether PRP is relevant at all.
What should a PRP review compare besides photographs?
It should compare the outcome that was agreed before treatment: overall coverage, a defined density measure, shedding, tolerability or another relevant clinical measure. These are not interchangeable. Feeling less worried is important, but it does not establish a particular increase in hair count.
The 2025 systematic review found evidence of improved density compared with placebo, with substantial variation across studies. It did not establish a guaranteed individual response. A clinic should explain what its measurements can and cannot show.
Can photographs prove PRP caused the improvement?
Not on their own. Hair cycles, changes in other treatment, recovery from shedding and differences in image capture can contribute. A before-and-after pair has no untreated comparison and cannot isolate the effect of one intervention.
That is why controlled trials matter alongside clinical records. If you use another treatment during a PRP course, document it. Do not stop an effective prescribed treatment merely to create a cleaner marketing comparison.
What should I ask before paying for a course?
Ask who establishes the diagnosis, how baseline images are taken, when review occurs and what would count as a worthwhile response for you. Ask how non-response will be handled, rather than accepting indefinite maintenance by default.
Discuss a hair assessment with The London PRP Clinic A useful consultation should set realistic goals, compare alternatives and explain a written plan and quote. Attractive photography should support that discussion, not replace it.
What about consent and privacy?
Clinical photography and permission to use photographs in marketing are different decisions. Ask how images are stored, who can see them and whether they will be shared outside your care. Do not assume agreeing to treatment means agreeing to public before-and-after promotion.
You can ask for an explanation of your own comparison images without agreeing to their publication. The aim is a reliable record of your care, not a promise that every hair result will be visible in a promotional image.
Sources and evidence limits
- Clinical and Experimental Dermatology: standardising hair-loss photography
- Institute of Medical Illustrators hair-loss photography guidance
- 2025 systematic review and meta-analysis of PRP for alopecia
This guide explains evidence and questions for a consultation. It does not diagnose your condition or confirm that a test or procedure is appropriate for you.
What should I do next?
Discuss an individual assessment with The Wellness. Bring your previous results, medicines and the question you want answered. Ask for a written plan and quote before deciding to proceed.