Simply to add to @Bigmac´s comment regarding scarring.
The extent of visible scarring. Can be affected by the expertise and experience of the Doctor. Performing the extraction and when required closure. With FUE understanding of the blind extraction technique and follicle anatomy. Then, the skin has natural healing properties that vary dependent on the skin characteristics, fair complexion compared to dark. Measure on the Fitzpatrick scale. Also, the after-care protocols and being adhered to, and no actions undertaken detrimental to healing.
just to quote
@silverguard44,
"FUT technology is a very classical method and it also damages the hair follicles and the donor area." It should be noted that this can occur regardless of the technique. Certainly not unique to FUT. Transection is possible with the extraction and handling of the grafts. Transection being the hair unit is damaged or severed to the point it will not grow. An experienced surgeon will keep their transection rate to a minimum by way of the protocols and skills they have developed. Such as care during extraction, cleaning, and graft placement. For instance, minimising risk by way of using high magnification scopes and loupes throughout the procedure.