Hair growth explained - SLP Hair Loss

Hair re-growth

These glands are connected to hair follicles by tiny ducts. The largest and greatest number of glands are found on the face and scalp.

These involuntary muscles contract in response to cold or fear, sometimes pulling the hair follicle upright and creating 'gooseflesh'.

Hair cells develop in pits in the skin called follicles, which reach down into the dermis.

The cells divide and eventually die, forming a hair shaft as the dead cells build up. Each follicle has phases of growth and rest.

During the rest phase, the development of hair cells at the base of a follicle slows down and then stops. The hair ceases to grow.

When the growth phase is initiated, hair cells in the bulb divide rapidly and a new hair develops.

As the hair grows, it pushes the old hair out of the follicle. On average hair grows about 8mm (1/2in) a month.