After an FUE hair transplant, it is recommended that the patient wait at least 7 to 10 days before disturbing the area of the transplanted grafts. It typically takes 10 days for the transplanted grafts to become firmly planted in their new home. Of course, that area still needs to be properly maintained by following the post-op instructions that have been provided. However, after 10 days, there is very little that can be done to cause any damage to these transplanted grafts. In fact, there are basically only 2 ways that the transplanted hairs can be damaged at this point:
The patient intentionally pulls the transplanted grafts out or bumps and scrapes his head and forcefully knocks them loose.
The patient has not followed the proper maintenance set out in the post-op instructions. Thick crusting can occur, so the grafts are pulled out when the crust is removed.