What is the average thickness of a human hair?
It can vary tremendously depending on race, and continent (Africans’ average hair thickness is higher than Europeans’, for example). It also depends if you talk about body hair or head hair. Hair from a human head is normally between .04 and .25 milimeters, averaging normally .1. Body hair depends on gender and even within individuals of the same gender and race it can be very different from an individual to another.
