When we choose chest arms legs pubic area beard ..I mean all areas except scalp ,we call it as body to head transfer of follicles @ bht. So bht is much pampered these days to promise good results. Or to augment results in certain select cases. I have been doing body to head transplant for almost five years now. In my experience body hair transplant is successful in cases where either the thickness of chest follicles is approx 20 microns in a standalone procedure or if the thickness is less , than it helps by addition of scalp follicles along with. Standalone body hair transplant to head is sparingly successful and should be under taken in certain select cases.