Human hair facts
Human hair is made out of Keratin, a protein
Human hair grow out of human hair follicles
The diameter of Human hair is 17th to 181 um (millionth of a meater)
Average Human hair someone has is about five million hairs
Straight Human hair grows out of a round hair follicle. Curly human hair comes out of an oval human hair follicle.
Pigment determines the human hair color
An average of 80 human hairs fall out each day