Does the max amount of hairs per CM after a transplant include existing hair? I'm kinda confused about this. I keep reading that hair transplants will only give like 40 hairs per cm. (lets use this number for the benefit of my question) I have some very thin areas that I assume have like 25 hairs per cm. Will a transplant be able to give me an EXTRA 40 hairs per cm (so 65hairs per cm overall) or only an extra 15 hairs per cm, leading to the 'max of 40 hairs per cm?'