What is the hair medulla?

What is the hair medulla?

Robert Steinken (Celebrity Hairstylist) gives expert video advice on: What is hair?; How does hair grow?; What is the hair cuticle? and more...

The hair medulla is actually a group of cells that make up the chemical composition of the hair. Usually, people with coarser hair have more medulla whereas people with finer hair, flatter textured hair, they usually have less medulla in their hair.