Structure and function of the hair matrix:
The hair matrix consists of highly active, rapidly dividing stem cells. These cells divide continuously to form new hair cells that extend the hair at its tip. During this cell division, the cells differentiate into various hair structures such as the hair cylinder (the actual hair fiber) and the inner root sheaths that surround and protect the hair.
Cell division in the hair matrix is particularly intense during the anagen phase of the “hair growth cycle”:/en/hairgrowthcycle.html, when the hair is actively growing. The speed of cell division largely determines hair growth, which is approximately 0.3 to 0.5 millimeters per day.
Cooperation with the dermal papilla:
The dermal papilla supplies the hair matrix with vital nutrients and signals that control cell growth and hair formation. Without the close connection to the dermal papilla, the hair matrix hair matrix cannot fulfill its function, which can lead to hair growth disorders or hair loss.
Significance in hair loss and hair treatments:
Since the hair matrix is the source of hair production, damage to this region is often irreversible and can lead to permanent baldness. Many hair loss treatments aim to promote or protect the activity of the hair matrix.
In “laser hair removal,” for example, the hair matrix is particularly sensitive to laser energy during the active anagen phase, as the cells are most active at this time.
