Hi furious and marco,
He had 4000 FUE in one op before our repair, the patient’s feelings are little grew from that procedure. He was left with unevenness in his donor which is evident in the before pictures, due to over harvesting it reduced the density of FU in some areas considerably. You are seeing the strip from the op we performed, still slightly pink, not uncommon at 9 months, infact I will post his 10 months pictures with short wet hair soon and you will see a big difference. As for the donor density looking different when the hair is short and appearing worse when long it is almost the opposite to the basis of the HT and illusion of thickness, hair covering hair to block the light reflection off the scalp.
Many men keep their hair shorter when they start to lose their hair because shorter hair hides things like different calibre hair and can give a more even look to the head of hair, obviously only works in the earlier stages of thinning and when the hair actually stops growing it then becomes more obvious. When the hair is longer it shows up the differences in density and hair quality more, especially when over harvested in areas because the thickness/thinness variant is greater, when shorter it becomes less obvious.
Just to add, in our opinion this does not mean if you intend to keep your hair very short a great deal more hair can be removed from the donor area with FUE, because long and short term it will create problems, miniaturisation, more potential for visible scarring etc. With careful harvesting it maybe possible on the the right candidate to remove slightly more but not to the extent the numbers are going to change dramatically.