Science Behind the Art
We offer four world-class hair restoration methods. Each has unique advantages — our surgeons will recommend the best technique for your specific case.
DHI
Direct Hair Implantation
Maximum Density & Precision with Choi Pen
DHI (Direct Hair Implantation) is an advanced evolution of FUE. Using the patented Choi Implanter Pen, follicles are extracted and implanted simultaneously in one step — eliminating the need for pre-made channels. This dramatically reduces the time grafts spend outside the body, increasing survival rates, and allows for ultra-precise angle and depth control.
Duration
7–10 hours
Recovery
5–7 days
Max Grafts
Up to 4,000
Pain Level
Minimal (local anesthesia)
Ideal For
Hairline refinement, high-density zones
Pre-op consultation & hairline design
Comfort-In needle-free anesthesia applied
Follicles extracted using micro-punch tool
Follicles loaded into Choi Implanter Pens
Simultaneous channel creation and implantation
Natural angle (40–45°) and direction control
No shaving required in recipient area (optional)
Side-by-side at a glance
| Feature | FUE | DHI | Sapphire FUE | PRP |
|---|---|---|---|---|
| Procedure time | 6–8 hrs | 7–10 hrs | 6–8 hrs | 45 min |
| Recovery time | 7–10 days | 5–7 days | 5–7 days | 24 hrs |
| Max grafts | 4,500 | 4,000 | 4,500 | N/A |
| Scarring | Minimal dots | Minimal dots | Minimal dots | None |
| Shaving required | Yes (donor) | Optional | Yes (donor) | No |
| Graft survival | 90–95% | 95–97% | 90–95% | N/A |
Our surgeons will evaluate your hair loss pattern, donor density, and goals — then recommend the optimal technique at zero cost to you.