Hair Anatomy and Growth Cycle: Understanding the Basics

Hair Anatomy
1. Hair Follicle:

Definition: A small, tube-like structure in the skin that anchors and supports the hair shaft.

Location: Embedded in the dermis layer of the skin.

Role: Provides a nourishing environment for hair growth and regulates the hair growth cycle.

2. Hair Bulb:

Location: Located at the base of the hair follicle.

Function: Contains cells responsible for hair growth, known as matrix cells.

Dermal Papilla: A small, cone-shaped structure within the hair bulb that supplies blood and nutrients essential for hair growth.

3. Hair Root:

Definition: The portion of the hair that lies below the skin surface.

Attachment: Attached to the hair bulb and dermal papilla.

4. Hair Shaft:

Definition: The visible part of the hair that extends above the skin's surface.

Composition: Made up of keratin, a protein that gives hair its structure and strength.

Layers: The hair shaft consists of three layers:

Cuticle: The outermost layer, composed of overlapping scales that protect the hair.

Cortex: The middle layer, containing most of the hair's pigment and strength.

Medulla: The inner layer, which may be absent in fine hair.
read more..