Follicular Unit extraction or FUE is a highly popular and evolving hair transplant technique in which a small round punch is used to extract follicular units from a patient’s bald resistant donor areas one at a time. These 1, 2, 3 and 4 hair groupings (called follicular unit grafts) are then transplanted into a patient’s balding areas.
In FUE, the extraction of intact follicular unit is dependent on the principle that the area of attachment of arrector muscle to the follicular unit is the tightest zone. Once this is made loose and separated from the surrounding dermis, the inferior segment can be extracted easily. Because the follicular unit is narrowest at the surface, doctor uses small micropunches of size 0.6–0.8 mm and therefore the resulting scar is too small to be recognised.