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Hair Transplant
Turkey, Istanbul

Clinical Library

The long-form documents published by Hair of Istanbul. Each one states what it is based on, when it was published, and who checked it. Last updated: 16 September 2026

Hair of Istanbul Clinical Library – whitepapers and clinical reports

The documents

2025 Annual Clinical ReportAnnual report · December 2025 — What the clinic actually did in 2025: 1,250 hair transplantation procedures between 1 January and 6 December, an estimated 4,750,000 grafts, a mean of 3,800 grafts per procedure, and the revision rate. Rests on a direct count from operative records — our own data, published in full rather than summarised.Golden Ratio Hairline DesignMethodology — How the position of a new hairline is judged. Phi (φ, approximately 1.618) is used as a proportional reference, alongside Da Vinci’s facial thirds, facial mapping, visagism and donor planning. It is explicitly not a formula that produces one correct hairline. Rests on published proportional methods, set against how we actually plan — and it states its own limits.Finasteride in Hair RestorationEvidence review — Evidence, safety and patient-centred use of a 5α-reductase inhibitor in male pattern hair loss — what it can do, what it cannot, and who it is not appropriate for. A prescription medicine, described as one. Rests on the published literature, with the uncertainties left in.Hair Follicle Regeneration: What Has Been Demonstrated, and What Has NotResearch explainer · September 2026 — Where laboratory research into growing new hair follicles currently stands, written from the research company’s own written answers to our questions. It describes work in progress, not a treatment anyone can receive today, and nothing available at Hair of Istanbul. Rests on written responses from OrganTech, Inc. (Tokyo), reviewed and approved by OrganTech for scientific accuracy and attribution before publication.
At a glance

This library holds the documents behind our clinical statements: our own annual figures, the methods we use when planning a procedure, our reading of the published evidence on medical treatment, and material prepared with outside scientific verification. Definitions of individual terms belong in the Encyclopedia; short answers belong in the FAQ. This page holds the longer documents, in full.

How we publish

These documents exist because a clinic that makes clinical statements should be willing to show what those statements rest on. Four rules govern what appears here.

  • Every figure names its source. Where a number comes from our own records, we say so, and we say how it was counted. Where it comes from published work, the work is cited.
  • Every document carries a date. A position that was accurate in 2025 may not be accurate later. The date is on the document, not buried in a footer.
  • No claim is made stronger than what supports it. Where something has been shown in one setting but not another, the document says which. Where the evidence is mixed, it stays mixed.
  • Where an outside party can check a document, we ask them to — and we publish what they say, including the corrections.

These documents describe methods, evidence and our own results. None of them is a treatment recommendation for an individual patient, and none replaces an assessment. Any medical treatment mentioned in them is prescribed only after examination.

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