Several people have asked this question. How many hair per square centimeter. Many clinics give the answer over the phone, sight unseen
It depends upon the following
what is the diameter of your follicles
what is the depth of the follicles
what is the shape of the follicle and what is the preponderance of number of bulbs per follicular unit…varies dramatically between cultural groups
what are the characteristics of the skin layers, that is, the epidermis, dermis, and hypodermis regarding VASCULARITY, COLLAGEN ELASTIN and DEPTH of each layer
The above determine what is possible and all parameters vary as much as height , weight and body shape in humans.
Even plant nurseries have instructions on how deep and how far apart they can be planted.
Like the earth itself, the skin follows the same rules.
If you try to guess , without seeing me, my height weight age and body shape and you were wrong, it would be no issue , no skin off anyones nose…and ridiculous to begin with.
But giving an estimate over the phone can be misleading, dangerous and , if followed without proper examination and microsurgical precision, can result in skin necrosis, follicle death and regret.