💡 Quick answer
The back and sides of the scalp, where follicles are genetically resistant to DHT and keep growing. Transplants move hair from here to thinning areas. A st
Key termsDHT (dihydrotestosterone)FUE (follicular unit extraction)FUT (follicular unit transplantation)
The back and sides of the scalp, where follicles are genetically resistant to DHT and keep growing. Transplants move hair from here to thinning areas. A strong donor area is essential and limits how many grafts are available over a lifetime.
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Not medical advice. General education only; it does not replace diagnosis or treatment by a licensed professional. Consult a board-certified dermatologist before starting, stopping or changing any treatment.
⚠️ When to see a doctor — don’t self-treat
- Sudden patchy or circular bald spots
- Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
- Broken hairs or rapid loss
- Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
- Loss right after a new medication
- Any hair loss in a child