What are the principles of the various steps in the procedure?

FUE is the harvesting of follicular units using refined miniscule punches which may range in size from 0.65-0.85 mm in internal diameter. The system used may be motorised or robotic. Manual FUE is waning in popularity due to slow pace of the procedure allowing just 500-800 grafts harvested in an 8 hour session. It is only the harvesting that is different in FUE, remaining procedure remains mostly the same.