is there any way to determine one’s hair shaft thickness (whether coarse or medium etc) without microscopic measurements? Some websites suggest that coarse hair needs more time to dry than normal, others claim that fine hair reflects more light and can’t be felt between thumb and index finger. Are these statements true? Sometimes I realize that even in my donor some hairs vary in colour and thickness, cant remember if this has always been the case. On top of that, whats the difference between medium and medium coarse?
I suppose you can use a micrometer and caliper to measure the shaft diameter, but I wonder how this information will be helpful to you? If you have fine, medium, or coarse hair, that is just who you are. Hair can vary in thickness depending on what stage of the growth cycle they are in.
As for defining medium and medium coarse, it sounds pretty self-explanatory to me. Medium hair thickness is the middle of the spectrum, and medium coarse would be just between medium and coarse.