We’re does your hair come from like how come it just keeps growing and growing

Question: We’re does your hair come from like how come it just keeps growing and growing
- Keywords:
  biology,
  hair,
  human body
Asked by jamie on 19 Nov 2020.
- Marcello Valente answered on 19 Nov 2020:
  
  Dear Jamie,
  like nails there are specific cellks thay use your calcium in the body to make hairs, iff this cells die you go bald!
- Liudmila Khokhlova answered on 19 Nov 2020:
  
  Hi Jamie,
  Hairs indeed come from specific cells. These cells are lay at the bottom of a small hole in the skin (called follicle) and form keratin (a protein that hairs are made of), the layers of keratin are added to the bottom of the hair (root) and the hair is slowly pushed/squeezed out – so it grows.
  While hairs seem to be growing and growing there’s actually a limit to how long they can grow. Each hair on your head grows for about 2 to 6 years. After that, they fall out and replaced by new ones. People actually lose about 50-100 head hairs per day.

Question: We’re does your hair come from like how come it just keeps growing and growing