Q: What is Follicular Unit Transplantation and how is it different from Follicular Unit Extraction? — H.L., White Plains, NY

A: Follicular Unit Hair Transplantation, called FUT for short, is a procedure where hair is transplanted in the naturally occurring groups of one to four hair follicles. These individual groups of hair, or units, are dissected from a single donor strip using a stereo-microscope. The area where the donor strip was removed is sutured closed, generally leaving a thin, fine, line scar.

In Follicular Unit Extraction, or FUE, the individual units are removed directly from the back or sides of the scalp through a small round instrument called a punch. There is no linear scar. There is, however, scarring from the removal of each follicle. Although the scars of FUE are tiny and round, the total amount of scarring is actually more than in FUT.

In addition, since in FUE the bald skin around each follicular unit is not removed, the total amount of hair that can be removed in FUE is substantially less than in FUT. This is because if one were to remove all the hair in an area, it would be bald. In FUT, the intervening bald tissue is removed along with the follicles in the strip.

Read our page on FUE vs. FUT