Knowledge · Understanding Hair Medicine
A medical knowledge library for patients — methods, anatomy, design principles, and technical terms. Written by Dr. Sophie Karg and Dr. Sussan Rosenthal, free from marketing hype.
This library is structured by topic clusters. Select an article from the sidebar on the left or navigate through the most important topics here.
Hair Transplant Methods
What surgical procedures exist, how they differ, and which is suitable for which finding.
- FUE Method — Follicular Unit Extraction, today's gold standard
- DHI Method — Direct Hair Implantation with Choi Implanter
- FUE vs DHI vs Sapphire FUE — direct method comparison
Anatomy & Biology
Those who understand how hair grows also understand why it falls out — and why a transplant works.
- Hair Follicles & FU1–FU4 — structure of a follicular unit, growth cycle, DHT mechanism
Design & Classification
What constitutes a natural hairline and how hair loss is medically classified.
- Hairline Design — principles of a natural hairline
- Norwood & Ludwig Scale — classification for men and women
Conservative Therapies
Not all hair loss requires surgery. What works, what is marketing, and what suits whom.
- Hair Growth Products Compared — Minoxidil, Finasteride, Dutasteride
- Alternative Methods — LLLT, SMP, Microneedling, Wigs
- PRP Therapy — platelet-rich plasma treatment for hair and skin
Quality & Process
What is often missing in marketing: honest information about quality, risks, and the journey from the first question to the final result.
- Grafts ≠ Quality — why more grafts do not mean a better result
- Patient Journey — the entire process in 7 phases
- Complications & Risks — honest information about what can go wrong
Special Indications
Hair loss and hair medicine in specific life situations — from female hair loss to transgender hair medicine.
- Hair Loss in Women — causes, diagnosis, treatment options
- Postpartum Hair Loss — after pregnancy
- Telogen Effluvium — stress-, illness-, and medication-related hair loss
- Lichen Planopilaris & FFA — scarring alopecias
- Hair After Chemotherapy — course, care, regrowth
- Transgender Hair Medicine — FTM and MTF
Further Treatments
Beard, eyebrows, corrective procedures — specialized applications of hair transplantation.
- Beard Transplant — fuller, more even beard
- Eyebrow Transplant — permanently full brows
- Corrective Procedures — repairing botched transplants
Experiences & Evidence
Real patient stories, visual results, realistic expectations — and the scientific basis for all our recommendations.
- Testimonials — real patient stories
- Before & After Gallery — visual treatment results
- Realistic Expectations — what is achievable and what is not
- Study References — scientific basis of our recommendations
Tools & Reference Works
Interactive self-assessments and a glossary for looking up all technical terms.
- Norwood Self-Test — find your stage in 30 seconds
- Trichoscopy Quiz — better understand findings
- A–Z Glossary — all technical terms explained alphabetically
Consultation
No article can replace a personal conversation. In an initial consultation with Dr. Karg or Dr. Rosenthal, we clarify with trichoscopy and anamnesis what makes sense for you — and what does not.