What is hair, and how does it grow? Look around, and you’ll see all kinds of hair. Some people’s hair is curly. Other hair grows straight. Some is blonde. Some is brown. Some is blue. What makes hair grow the way it does?
How does hair grow?
Hair and animal fur grow from special hair cells in the skin. These cells sit in little pits called follicles. Mammals have hair follicles scattered all over their bodies.
That’s something all mammals share: we’re animals with hair.
Hair starts out as a column of skin cells packed with a protein called keratin.
