Famous Hair Cortex References. Web the hierarchical structure of hair in the cortex and cuticle. The bulk of this hair fiber belongs to the cortical layer, which plays a vital role in determining the physical and mechanical properties of the hair, such as strength, texture, and color.

Producing sebum, apocrine sweat and pheromones; Web the hair shaft comprises a cortex, surrounding cuticle cells, and sometimes a central medulla found in thicker hair. At the base of the hair, the hair root widens to a round hair bulb.