Question

how and why does our hair grow...?

Answer 1

Answer:

Explanation:

Hair grows from the follicle, or root, underneath the skin. The hair is 'fed' by blood vessels at the base of the follicle, which give it the nourishment it needs to grow. Between starting to grow and falling out years later, each hair passes through four stages: anagen, catagen, telogen and exogen.

Answer 2

Answer:

The Anagen phase is the period of growth. The cells in the hair bulb divide rapidly creating new hair growth. Hair actively grows from the roots for an average of 2-7 years before hair follicles becomes dormant. In this time, hair can grow anywhere between 18-30 inches