Q: I notice that some patients end up with hair that seems to stand straight up while others have hair that flows to one side or the other. Does the angle at which you place the follicles in the scalp ultimately determine how the hair will lie? Is there some artistic talent needed when placing these follicles so that patients end up with hair that lies flat or sticks straight up? What determines this? Do we have control over it? — H.B., Fort Lauderdale, F.L.

A: Great question. You are correct, the angle of the recipient sites largely determines the hair direction. Hair should be planted the way it grows (i.e., in a forward and horizontal direction at the frontal hairline.) It is extremely important that it is transplanted that way to look natural. The body will alter the angle a bit as it heals, usually elevating it slightly and re-creating any prior wave (yes, waves are determined by the scalp, rather than by the hair follicles per se). In a properly performed hair transplant, a straight-up appearance should be due to grooming, it should not have been a result of the actual procedure. Hair should never be transplanted perpendicular to the scalp. I discussed these important concepts way back in my 1997 paper “The Aesthetics of Follicular Transplantation“.