💇 Hair Transplant Follicular Unit Extraction Simulator

Donor Zone Assessment

Placeholder: surveying the permanent, DHT-resistant fringe of scalp.

• ~10–12k: Donor follicle capacity (placeholder estimate)
• Lifelong: DHT resistance (placeholder note)
• Occipital/lateral: Zone location (placeholder note)
• 70–90/cm²: Typical density (placeholder figure)

Why this zone is permanent

Placeholder: androgen receptors here resist miniaturization signals.

Mapping density

Placeholder: trichoscopy estimates units per square centimeter.

Planning the harvest

Placeholder: surgeon caps extraction to preserve donor coverage.

Follicular Unit Extraction

Placeholder: a small punch isolates each follicular unit individually.

• 0.7–1.0mm: Punch diameter (placeholder figure)
• ~500–800/hr: Extraction rate (placeholder estimate)
• <5%: Transection risk (placeholder target)
• 4–8 hrs: Session length (placeholder range)

The punch mechanism

Placeholder: a rotating micro-punch scores around the follicle.

One unit at a time

Placeholder: sequential extraction avoids scarring, unlike strip harvest.

Handling extracted grafts

Placeholder: units are kept chilled and hydrated immediately.

Graft Sorting & Preparation

Placeholder: technicians sort grafts under magnification by hair count.

• ~20%: 1-hair units (placeholder split)
• ~55%: 2-hair units (placeholder split)
• ~25%: 3-hair units (placeholder split)
• ~4°C: Storage temp (placeholder figure)

Stereo-microscope sorting

Placeholder: magnification prevents damage while counting hairs.

Placement strategy

Placeholder: single-hair units reserved for the hairline edge.

Minimizing time out of body

Placeholder: chilled holding solution preserves graft viability.

Recipient Site Implantation

Placeholder: incisions receive grafts at natural angle and density.

• 30–45°: Insertion angle (placeholder figure)
• ~30–40/cm²: Recipient density (placeholder target)
• Blade or needle: Site creation (placeholder note)
• Slider-linked: Coverage cap (depends on grafts planned)

Angle matches native flow

Placeholder: implant angle follows surrounding natural hair direction.

Density gradient

Placeholder: denser packing centrally, finer density at hairline.

Placement order

Placeholder: hairline defined first, crown filled afterward.

Growth Cycle & Permanent Result

Placeholder: shedding, dormancy, then permanent regrowth follow.

• ~2–8 wks: Shock-loss window (placeholder range)
• ~3–4 mo: Regrowth starts (placeholder range)
• ~12 mo: Full result (placeholder estimate)
• ~90–95%: Long-term survival (placeholder figure)

Shock loss is expected

Placeholder: transplanted hair sheds before the follicle resets.

Follicle stays alive

Placeholder: the dormant root survives beneath the surface.

Permanent by design

Placeholder: regrown hair keeps donor-zone DHT resistance forever.